阅读说明：本技术 液压锁紧系统和饮品机 (Hydraulic locking system and beverage machine ) 是由 朱国军 于 2019-04-04 设计创作，主要内容包括：本发明涉及液压控制领域,公开了一种液压锁紧系统和饮品机,液压锁紧系统包括沿液体流向依次布置的供液腔(11)、增压泵(2)和液压锁紧装置(3),该液压锁紧装置具有液压腔(31),增压泵能够将供液腔内的液体加压泵送至液压腔以实施液压锁紧,液压锁紧系统还包括用于容置从液压腔回流的液体的回液容置腔(41)。如此设置,使得从液压腔流出的液体不需再回流入供液腔中,而是容置于回液容置腔内,从而能够有效防止从液压腔回流的液体对供液腔内的液体质量产生影响,促使采用了该液压锁紧系统的饮品机所酿制而成的饮品具有较好的饮用口感,有利于大幅提升用户的使用体验。(The invention relates to the field of hydraulic control, and discloses a hydraulic locking system and a beverage machine, wherein the hydraulic locking system comprises a liquid supply cavity (11), a booster pump (2) and a hydraulic locking device (3) which are sequentially arranged along the flow direction of liquid, the hydraulic locking device is provided with a hydraulic cavity (31), the booster pump can pressurize and pump the liquid in the liquid supply cavity to the hydraulic cavity to implement hydraulic locking, and the hydraulic locking system also comprises a liquid return accommodating cavity (41) for accommodating the liquid returned from the hydraulic cavity. So set up for liquid from the outflow of hydraulic pressure chamber need not flow back into the confession liquid chamber again, but the holding is in returning liquid holding intracavity, thereby can prevent effectively that the liquid from the hydraulic pressure chamber backward flow from giving rise to the influence to the liquid quality that supplies the liquid intracavity, impel the drink that the drink machine that has adopted this hydraulic pressure locking system brewed and form to have better drinking taste, be favorable to promoting user's use to experience by a wide margin.)

1. The utility model provides a hydraulic locking system, characterized in that, hydraulic locking system includes along liquid flow direction confession sap cavity (11), booster pump (2) and the hydraulic locking device (3) that arrange in proper order, and this hydraulic locking device (3) have hydraulic pressure chamber (31), booster pump (2) can with liquid pressurization pump in the confession sap cavity (11) extremely hydraulic pressure chamber (31) are in order to implement hydraulic pressure locking, hydraulic locking system still includes and is used for the holding to follow liquid holding chamber (41) of returning of the liquid of hydraulic pressure chamber (31) backward flow.

2. The hydraulic locking system of claim 1, wherein a return chamber supply line (L1) is connected to the return chamber (41), and the booster pump (2) can selectively pump the liquid in the return chamber (41) to the hydraulic chamber (31) through the return chamber supply line (L1).

3. The hydraulic locking system of claim 2, wherein a liquid supply switching valve (V1) is disposed in a liquid supply pipeline (L2) between the liquid supply cavity (11) and the booster pump (2), the liquid supply switching valve (V1) includes a first liquid supply conducting position and a second liquid supply conducting position, and the liquid inlet of the booster pump (2) is respectively and correspondingly communicated with the liquid supply cavity (11) and the liquid return accommodating cavity (41) at the first liquid supply conducting position and the second liquid supply conducting position.

4. The hydraulic locking system of claim 3, comprising a controller configured to:

when a hydraulic locking signal is received, the liquid supply switching valve (V1) is controlled to be in the liquid supply second conduction position, and the booster pump (2) is controlled to be started;

and when the opening time of the booster pump (2) reaches the preset liquid drainage time, controlling the liquid supply switching valve (V1) to switch from the liquid supply second conduction position to the liquid supply first conduction position.

5. Hydraulic locking system according to claim 4, characterized in that the volume of said return fluid housing chamber (41) is not less than 20ml and not more than 100 ml.

6. The hydraulic lock system according to claim 2, characterized in that a hydraulic switching valve (V2) is provided in a hydraulic line (L3) between the booster pump (2) and the hydraulic chamber (31), the hydraulic switching valve (V2) includes a first hydraulic conducting position and a second hydraulic conducting position, the hydraulic chamber (31) communicates with the booster pump (2) at the first hydraulic conducting position, and communicates with the return liquid accommodating chamber (41) through a return line (L4) at the second hydraulic conducting position.

7. The hydraulic locking system of claim 6, comprising a controller configured to:

when a hydraulic locking signal is received, the hydraulic switching valve (V2) is controlled to be in the hydraulic first conduction position, and the booster pump (2) is controlled to be started;

and when receiving a hydraulic reset signal, controlling the hydraulic switching valve (V2) to switch from the hydraulic first conduction position to the hydraulic second conduction position.

8. The hydraulic locking system according to any one of claims 1 to 7, characterized in that the hydraulic locking system comprises a return liquid accommodating tank (4), and the return liquid accommodating chamber (41) is arranged in the return liquid accommodating tank (4) and is communicated with the outside atmosphere; or the hydraulic locking system comprises a telescopic liquid return accommodating bag, and the liquid return accommodating bag is internally provided with the liquid return accommodating cavity (41).

9. A beverage machine, characterized in that it comprises a hydraulic locking system according to any one of claims 1 to 8.

10. The beverage machine according to claim 9, characterized in that the hydraulic locking device (3) comprises a brewing chamber (32) adapted to house a beverage capsule (9), the booster pump (2) being provided with a first liquid outlet for supplying liquid to the hydraulic chamber (31) for hydraulically locking the beverage capsule (9), the first liquid outlet being provided with a hydraulic one-way valve arranged to allow the booster pump (2) to pump liquid under pressure through the first liquid outlet to the hydraulic chamber (31) and back off.

11. The beverage machine as claimed in claim 10, characterized in that the booster pump (2) is further provided with a second liquid outlet connected with a brewing line (L5), the brewing line (L5) being used for supplying liquid to the beverage capsule (9) for brewing beverage after the hydraulic locking device (3) locks the beverage capsule (9).

12. Beverage machine according to claim 11, characterized in that said brewing line (L5) is provided, in the liquid flow direction, with a heating device (5), a brewing one-way valve (V4) and a liquid conduit (33), said second outlet being provided with a back pressure valve, said liquid conduit (33) being intended to penetrate into said beverage capsule (9) to feed the liquid coming from said liquid feeding chamber (11), said back pressure valve having an opening pressure not less than the opening pressure of said brewing one-way valve (V4).

13. Beverage machine according to claim 12, characterized in that a three-way valve (V5) is provided in the brewing line (L5) between the brewing one-way valve (V4) and the liquid guide tube (33), the beverage machine further comprising a gas supply system for blowing gas into the beverage capsule (9) after brewing is completed, the gas supply line (L6) of the gas supply system being connected to the three-way valve (V5), the three-way valve (V5) being arranged to allow the gas in the gas supply line (L6) to flow to the liquid guide tube (33) and to shut off in the opposite direction.

14. Beverage machine according to claim 11, characterized in that it comprises a gas supply system for blowing gas into the beverage capsules (9) after brewing is completed, on the brewing line (L5) there is a three-way switching valve (V3), to which gas supply line (L6) of the gas supply system is connected as a bypass line (V3).

15. The beverage machine according to claim 9, characterized in that the beverage machine comprises a liquid supply tank (1) provided with the liquid supply chamber (11), the liquid supply tank (1) is detachably mounted and connected with a liquid supply pipeline (L2), the liquid supply pipeline (L2) is used for supplying liquid to the booster pump (2), wherein a liquid supply pipe one-way valve is arranged at a liquid supply pipe inlet of the liquid supply pipeline (L2), and the liquid supply pipe one-way valve is arranged for allowing liquid from the liquid supply tank (1) to pass through in one way.

Technical Field

The invention belongs to the field of hydraulic control, and particularly relates to a hydraulic locking system and a beverage machine.

Background

At present, capsule type beverage machines are more and more popular because they are more and more popular with consumers due to their features of simple operation, safety and sanitation, and guaranteed beverage quality. The beverage machine comprises a water tank and a hydraulic locking device, the hydraulic locking device comprises a brewing cavity suitable for containing a beverage capsule and a hydraulic cavity used for introducing liquid from the water tank to hydraulically lock the beverage capsule, and after the beverage capsule is hydraulically locked, water in the water tank is introduced into the beverage capsule to brew the beverage.

In current drink machine, the back is made to the drink, for making hydraulic pressure locking device change the hydraulic pressure state of reseing into from hydraulic pressure locking state, go back to the liquid backward flow of hydraulic pressure intracavity in the water tank usually, so, the liquid quality of original liquid produces the influence in the water tank relatively easily of the liquid that flows back in the water tank, and then the influence adopts the drink taste of the drink that the liquid in this water tank was made, can bring not good use experience for the user.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a hydraulic locking system and a beverage machine, wherein the hydraulic locking system can prevent liquid from a hydraulic cavity from flowing back into a liquid supply cavity, so that the liquid in the liquid supply cavity has better quality, the beverage brewed by the beverage machine adopting the hydraulic locking system has better drinking taste, and the use experience of a user is favorably improved.

In order to achieve the above object, the present invention provides a hydraulic locking system, which includes a liquid supply chamber, a booster pump, and a hydraulic locking device, which are sequentially arranged along a liquid flow direction, wherein the hydraulic locking device has a hydraulic chamber, the booster pump can pump the liquid in the liquid supply chamber to the hydraulic chamber under pressure to implement hydraulic locking, and the hydraulic locking system further includes a liquid return accommodating chamber for accommodating the liquid returning from the hydraulic chamber.

Preferably, the liquid return accommodating cavity is connected with a liquid return cavity liquid supply pipeline, and the booster pump can selectively pump the liquid in the liquid return accommodating cavity to the hydraulic cavity through the liquid return cavity liquid supply pipeline.

Preferably, a liquid supply switching valve is arranged in a liquid supply pipeline between the liquid supply cavity and the booster pump, the liquid supply switching valve comprises a first liquid supply conducting position and a second liquid supply conducting position which are switched to conduct, and a liquid inlet of the booster pump is communicated with the liquid supply cavity and the liquid return accommodating cavity correspondingly at the first liquid supply conducting position and the second liquid supply conducting position respectively.

Preferably, the hydraulic locking system includes a controller configured to: when a hydraulic locking signal is received, the liquid supply switching valve is controlled to be in the liquid supply second conduction position, and the booster pump is controlled to be started; and when the opening time of the booster pump reaches the preset liquid drainage time, controlling the liquid supply switching valve to switch from the liquid supply second conduction position to the liquid supply first conduction position.

Preferably, the liquid containing amount of the liquid return accommodating cavity is not less than 20ml and not more than 100 ml.

Preferably, the booster pump with be equipped with the hydraulic pressure diverter valve in the hydraulic pressure pipeline between the hydraulic pressure chamber, the hydraulic pressure diverter valve switches on the position including switching over the first position and the hydraulic pressure second that switch on of hydraulic pressure, the hydraulic pressure chamber is in the first position intercommunication that switches on of hydraulic pressure the booster pump, and the hydraulic pressure second switch on the position through the liquid return pipeline with the liquid return holding chamber is linked together.

Preferably, the hydraulic locking system includes a controller configured to: when a hydraulic locking signal is received, the hydraulic switching valve is controlled to be in the hydraulic first conduction position, and the booster pump is controlled to be started; and when a hydraulic reset signal is received, the hydraulic switching valve is controlled to be switched from the hydraulic first conduction position to the hydraulic second conduction position.

Preferably, the hydraulic locking system comprises a liquid return accommodating box, and the liquid return accommodating cavity is arranged in the liquid return accommodating box and communicated with the outside atmosphere; or the hydraulic locking system comprises a telescopic liquid return accommodating bag, and the liquid return accommodating bag is internally provided with the liquid return accommodating cavity.

The invention also provides a beverage machine, which comprises a hydraulic locking system.

Preferably, the hydraulic locking device comprises a brewing chamber suitable for containing a beverage capsule, the booster pump is provided with a first liquid outlet for supplying liquid to the hydraulic chamber to hydraulically lock the beverage capsule, the first liquid outlet is provided with a hydraulic one-way valve, and the hydraulic one-way valve is set to allow the booster pump to pump the liquid to the hydraulic chamber through the first liquid outlet in a pressurization manner and to be reversely stopped.

Preferably, the booster pump is further provided with a second liquid outlet connected with a brewing pipeline, and the brewing pipeline is used for supplying liquid to the beverage capsule after the beverage capsule is locked by the hydraulic locking device so as to brew a beverage.

Preferably, the brewing pipeline is sequentially provided with a heating device, a brewing one-way valve and a liquid guide pipe along the liquid flow direction, the second liquid outlet is provided with a back pressure valve, the liquid guide pipe is used for penetrating into the beverage capsule to input liquid from the liquid supply cavity, and the opening pressure of the back pressure valve is not less than that of the brewing one-way valve.

Preferably, a three-way valve is arranged in the brewing pipeline between the brewing one-way valve and the liquid guide pipe, the beverage machine further comprises an air supply system for blowing air into the beverage capsule after brewing is completed, an air supply pipeline of the air supply system is connected with the three-way valve, and the three-way valve is set to allow the air in the air supply pipeline to flow to the liquid guide pipe and be reversely cut off.

Preferably, the beverage machine includes the air supply system that is used for after the brewing the drink capsule gas blowing, it is equipped with the three-way switch valve to brew the pipeline, the air supply line of air supply system is as the side branch pipeline with the three-way switch valve links to each other.

Preferably, the drink machine is including being equipped with the feed tank of feed liquid chamber, feed tank demountable installation and be connected with the feed liquid pipeline, the feed liquid pipeline be used for to the booster pump supplies liquid, wherein the feed liquid pipe liquid inlet department of feed liquid pipeline is equipped with the feed pipe check valve, the feed pipe check valve sets up to allow to come from the liquid one-way of feed tank passes through.

Through the technical scheme, in the invention, the hydraulic locking system comprises the liquid supply cavity, the booster pump and the hydraulic cavity in the hydraulic locking device which are sequentially arranged along the liquid flow direction, the booster pump can supply liquid to the hydraulic cavity to implement hydraulic locking, and the liquid return accommodating cavity of the hydraulic locking system can also accommodate liquid flowing back from the hydraulic cavity, so that the liquid from the hydraulic cavity can directly flow into the liquid return accommodating cavity, namely the liquid flowing out from the hydraulic cavity does not need to flow into the liquid supply cavity any more, thus the liquid flowing out from the hydraulic cavity can be prevented from influencing the liquid quality in the liquid supply cavity (namely the physical, chemical or biological characteristics and the composition conditions of the liquid), and further the drink brewed by the liquid in the liquid supply cavity has better drinking taste, and the use experience of a user can be greatly improved.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 to 4 are schematic pipeline flow diagrams of a beverage machine according to a first preferred embodiment of the present invention, wherein fig. 1 illustrates a schematic liquid flow direction diagram of a hydraulic lock beverage capsule, fig. 2 illustrates a schematic liquid flow direction diagram of supplying liquid to the beverage capsule to brew a beverage, fig. 3 illustrates a schematic gas flow direction diagram of blowing gas into the beverage capsule after brewing, and fig. 4 illustrates a schematic liquid flow direction diagram of returning liquid in a hydraulic chamber into a liquid receiving chamber after brewing is completed;

FIG. 5 is a cross-sectional view of the overall construction of the multi-way valve of FIG. 1;

FIG. 6 is an overall cross-sectional view of the hydraulic locking device of FIG. 1, wherein the beverage capsule is shown only schematically and is not part of the hydraulic locking device;

FIG. 7 is a schematic pipeline flow diagram of a beverage maker according to a second preferred embodiment of the present invention;

fig. 8 and 9 are overall cross-sectional views of two preferred embodiments of the three-way valve of fig. 7, wherein fig. 8 shows a three-way secondary inlet lumen having a lift check structure disposed therein and fig. 9 illustrates a three-way secondary inlet lumen having a duckbill check structure disposed therein.

Description of reference numerals:

1 liquid supply tank 2 booster pump

3 hydraulic locking device 4 liquid return containing box

5 heating device 6 multi-way valve

7 air pump 8 flowmeter

9 beverage capsule

11 liquid supply cavity 31 hydraulic cavity

32 brewing cavity 33 catheter

34 hydraulic piston of hydraulic device base 35

36 closed end 37 piston chamber

41 liquid return accommodating cavity

610 inlet tube cavity portion 611 expansion portion

621 first outlet conduit chamber section 622 and second outlet conduit chamber section

623 third outlet lumen section 624 fourth outlet lumen section

62A export lumen case 62B export lumen elasticity piece that resets

62C outlet pipe chamber seat 62D outlet pipe chamber cover

62E ring seal

624A fourth outlet lumen spool 624B fourth outlet lumen elastic return

624C fourth outlet conduit chamber seat 624D fourth outlet conduit chamber cover

L1 liquid return cavity liquid supply pipeline L2 liquid supply pipeline

L4 liquid return line of L3 hydraulic line

L6 air supply pipeline for L5 brewing pipeline

Q1 triple first inlet lumen Q2 triple second inlet lumen

Q3 three-way outlet lumen V1 liquid supply switching valve

V3 three-way switching valve of V2 hydraulic switching valve

V4 brew check valve V5 three-way valve

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like are generally described with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The invention firstly provides a hydraulic locking system, referring to fig. 1, 4 and 7, the hydraulic locking system comprises a liquid supply cavity 11, a booster pump 2 and a hydraulic locking device 3 which are sequentially arranged along a liquid flow direction, the hydraulic locking device 3 is provided with a hydraulic cavity 31, the booster pump 2 can pump the liquid in the liquid supply cavity 11 to the hydraulic cavity 31 under pressure to implement hydraulic locking, and the hydraulic locking system further comprises a liquid return accommodating cavity 41 for accommodating the liquid which flows back from the hydraulic cavity 31.

The invention correspondingly provides a beverage machine, and referring to fig. 1 and 7, the beverage machine comprises a hydraulic locking system. Specifically, a hydraulic pipeline L3 and a brewing pipeline L5 are arranged on the downstream side of the liquid outlet of the booster pump 2 in parallel, liquid can be supplied to the hydraulic cavity 31 through the hydraulic pipeline L3 to hydraulically lock the beverage capsule 9, and then liquid is supplied to the beverage capsule 9 through the brewing pipeline L5 to brew the beverage.

In the invention, a liquid supply cavity 11, a booster pump 2 and a hydraulic cavity 31 which are sequentially arranged along a liquid flow direction are arranged in a hydraulic locking system, and a liquid return accommodating cavity 41 for accommodating liquid which flows back from the hydraulic cavity 31 is also arranged in the hydraulic locking system, so that when the hydraulic locking system is in a hydraulic locking state, the liquid in the liquid supply cavity 11 can be pressurized and pumped to the hydraulic cavity 31 through the booster pump 2 to implement hydraulic locking, and when the hydraulic locking system is switched from the hydraulic locking state to a hydraulic resetting state, hydraulic resetting can be implemented by returning the liquid in the hydraulic cavity 31 into the liquid return accommodating cavity 41, thereby realizing a hydraulic locking period of the hydraulic locking system, of course, a plurality of hydraulic locking periods are included in the whole life cycle of the hydraulic locking system, so that compared with the method that the liquid which flows out from the hydraulic cavity 31 flows back into the liquid supply cavity 11, the liquid containing cavity 41 is arranged for containing the liquid which flows back from the hydraulic cavity 31, so that the situation that the quality of the liquid in the liquid supply cavity 11 (namely the physical, chemical or biological characteristics of the liquid and the condition of the composition of the liquid) is influenced due to the fact that the liquid from the hydraulic cavity 31 flows back into the liquid supply cavity 11 for multiple times can be avoided, the drink brewed by the liquid in the liquid supply cavity 11 has better drinking taste, and the use experience of a user is promoted. In addition, the liquid returning accommodating cavity 41 is used for accommodating the liquid from the hydraulic cavity 31, rather than directly discharging the liquid returned from the hydraulic cavity 31 to the outside, for example, discharging the liquid to an external water tank, and the like, not only can the applicable environment of the beverage machine be effectively enlarged (i.e., the beverage machine is applicable to a place without the water tank), but also the place does not need to be modified with extra money for the operation of the beverage machine (e.g., the water tank is additionally arranged in the place), so that the probability that a consumer selects the beverage machine of the application when purchasing the beverage machine can be greatly improved, the sales share of the beverage machine is favorably improved, and great economic benefits are brought.

Preferably, referring to fig. 1 and 7, the liquid return accommodating chamber 41 is connected to a liquid return chamber liquid supply pipeline L1, and the booster pump 2 can selectively pump the liquid in the liquid return accommodating chamber 41 to the hydraulic chamber 31 through the liquid return chamber liquid supply pipeline L1 under pressure, so that the liquid in the liquid return accommodating chamber 41 can be used for hydraulic locking, and thus, the liquid containing volume required to be set in the liquid return accommodating chamber 41 can be greatly reduced, which is beneficial for the hydraulic locking system and even the beverage machine to be smaller and more compact. In addition, the liquid in the liquid return containing cavity 41 is used for hydraulically locking the beverage capsule 9, so that the frequency of pouring out the liquid in the liquid return containing cavity 41 due to overflow of the liquid return containing cavity can be effectively reduced. Certainly, if the booster pump 2 can completely evacuate the liquid in the liquid return accommodating cavity 41, the liquid return accommodating cavity 41 cannot overflow after the hydraulic locking system passes through a plurality of hydraulic locking cycles, so that the user is not required to pour the liquid in the liquid return accommodating cavity 41 to improve the convenience of user operation, and the liquid containing part provided with the liquid return accommodating cavity 41 can be fixedly arranged in the beverage machine to improve the reliability and the service life of the whole machine, and the use experience of the user is favorably improved.

Specifically, a liquid supply switching valve V1 is disposed in the liquid supply pipeline L2 between the liquid supply cavity 11 and the booster pump 2, and referring to fig. 1 and 7, the liquid supply switching valve V1 includes a first liquid supply conducting position and a second liquid supply conducting position, which are switched to be conducting, and the liquid inlet of the booster pump 2 is respectively and correspondingly communicated with the liquid supply cavity 11 and the liquid return accommodating cavity 41 at the first liquid supply conducting position and the second liquid supply conducting position. Thus, when the liquid supply switching valve V1 is in the first liquid supply conducting position, the booster pump 2 selects the liquid in the liquid supply chamber 11 to be delivered to the hydraulic chamber 31, and when the liquid supply switching valve V1 is in the second liquid supply conducting position, the booster pump 2 selects the liquid in the liquid return accommodating chamber 41 to be pressurized and pumped to the hydraulic chamber 31 to implement hydraulic locking. Of course, there may be other suitable ways for the booster pump 2 to selectively pump the liquid in the liquid return accommodating chamber 41 to the hydraulic chamber 31 through the liquid return chamber liquid supply line L1, for example, the end of the liquid return chamber liquid supply line L1 is directly connected to the liquid inlet of the booster pump 2, and the liquid return chamber liquid supply line L1 and the liquid supply line L2 are both provided with electromagnetic switch valves, etc., which are not illustrated here. It should be noted that, the end of the liquid supply pipeline L1 of the liquid return cavity is connected to the liquid inlet of the booster pump 2, the liquid inlet of the booster pump 2 needs to be modified, the modification cost of the booster pump 2 is high, and two electromagnetic switch valves need to be arranged to selectively cut off or conduct the liquid supply pipeline L1 and the liquid supply pipeline L2 of the liquid return cavity, and in the technical scheme, only one liquid supply pipeline L2 needs to be additionally provided with a switching valve V1, the modification cost is low, and cost reduction is facilitated.

Preferably, the hydraulic locking system comprises a controller, with reference to fig. 1 and 7, configured to: when the hydraulic locking signal is received, the liquid supply switching valve V1 is controlled to be in a liquid supply second conduction position, and the booster pump 2 is controlled to be started; when the opening time of the booster pump 2 reaches the preset liquid drainage time, the liquid supply switching valve V1 is controlled to be switched from the liquid supply second conduction position to the liquid supply first conduction position. By the arrangement, the hydraulic locking device can realize automatic control of hydraulic locking, is convenient for a user to use and operate, and can also achieve the aim of accurate control. The preset liquid discharge time is the time required for the booster pump 2 to completely empty the liquid in the liquid return accommodating cavity 41, for example, the preset liquid discharge time is not less than 3 seconds and not more than 6 seconds, and the preset liquid discharge time can be specifically determined by the amount of the liquid flowing back into the liquid return accommodating cavity 41 and the flow rate of the booster pump 2. Specifically, in order to prevent more liquid from accumulating in the liquid return accommodating chamber 41, in the present technical solution, the liquid storage in the liquid return accommodating chamber 41 is first emptied, and then the liquid in the liquid supply chamber 11 is taken to implement hydraulic locking. The hydraulic locking signal can be triggered manually by a user, or indirectly triggered by a preset process running according to a program after an operation program (such as a brewing program) is triggered manually by the user.

Additionally, the controller may be further configured to: when the hydraulic locking signal is received, the liquid supply switching valve V1 is controlled to be in a liquid supply second conduction position, and the booster pump 2 is controlled to be started; and when an emptying signal of completely emptying the liquid in the liquid return accommodating cavity 41 is received, the liquid supply switching valve V1 is controlled to be switched from the liquid supply second conduction position to the liquid supply first conduction position. Therefore, once the liquid return accommodating cavity 41 is emptied, the liquid supply switching valve V1 can be triggered to carry out switching operation, and the automatic control is more accurate. The liquid level detector may be used to detect the liquid level in the liquid return accommodating cavity 41 to trigger the emptying signal, or other appropriate means may be used, which is not limited herein. It should be noted that, when the beverage machine is started, if there is no liquid in the liquid return accommodating cavity 41, the controller controls the liquid supply switching valve V1 to switch to the first liquid supply conducting position according to the received emptying signal.

The liquid containing amount of the liquid return accommodating cavity 41 is preferably not less than 20ml and not more than 100 ml. Further, the liquid containing amount of the liquid return containing cavity 41 should be not less than 40ml and not more than 80 ml. Specifically, the liquid containing amount of the liquid return accommodating chamber 41 is preferably within the above range, which not only allows the liquid return accommodating chamber 41 to have a sufficient space to accommodate the liquid from the hydraulic chamber 31, but also prevents the liquid containing part provided with the liquid return accommodating chamber 41 from having an excessive volume.

Preferably, referring to fig. 1, 4 and 7, a hydraulic switching valve V2 is disposed in a hydraulic line L3 between the booster pump 2 and the hydraulic chamber 31, the hydraulic switching valve V2 includes a hydraulic first conducting position and a hydraulic second conducting position, the hydraulic chamber 31 is communicated with the booster pump 2 at the hydraulic first conducting position, and is communicated with the return liquid accommodating chamber 41 through a return line L4 at the hydraulic second conducting position. With this arrangement, when the hydraulic switching valve V2 is in the hydraulic first conducting position, the liquid pressurized by the booster pump 2 can be introduced into the hydraulic chamber 31 to implement hydraulic locking, and when the hydraulic switching valve V2 is in the hydraulic second conducting position, the liquid from the hydraulic chamber 31 can flow into the return liquid accommodating chamber 41 through the return liquid line L4. Of course, in order to realize the switching of the hydraulic lock device 3 from the hydraulic lock state to the hydraulic reset state, in addition to providing the hydraulic switching valve V2 connected to the return line L4 in the hydraulic line L3, it may be provided that the hydraulic chamber 31 is directly connected to the return line L4, and the return line L4 and the hydraulic line L3 are provided with electromagnetic opening and closing valves, respectively. Specifically, if the liquid return pipeline L4 is set to be directly connected with the hydraulic cavity 31, the hydraulic locking device 3 needs to be modified, the modification cost of the hydraulic locking device 3 is high, and two electromagnetic switch valves need to be set in addition to the high cost, and in the technical scheme, only one hydraulic switching valve V2 needs to be additionally arranged in the hydraulic pipeline L3, so that the modification cost is low.

Further, the hydraulic locking system comprises a controller, with reference to fig. 1, 4 and 7, configured to: when a hydraulic locking signal is received, the hydraulic switching valve V2 is controlled to be in a hydraulic first conduction position, and the booster pump 2 is controlled to be started; when receiving the hydraulic pressure reset signal, the hydraulic pressure switching valve V2 is controlled to switch from the hydraulic pressure first conduction position to the hydraulic pressure second conduction position. So set up, realize hydraulic pressure locking and hydraulic pressure reset's automatic control, when convenience of customers uses the operation, still have accurate control's technological effect. The hydraulic locking signal and the hydraulic reset signal may be triggered manually by a user, or indirectly triggered by a preset process running according to a program after the user manually triggers an operation program (such as a brewing program), and the like, which is not limited herein.

Specifically, the liquid containing member provided with the liquid return accommodating chamber 41 may be of various suitable types, for example, the liquid containing member is a liquid containing box or a liquid containing bag, which is not illustrated herein. Preferably, referring to fig. 1, the hydraulic lock system includes a return liquid accommodating tank 4, and a return liquid accommodating chamber 41 is provided in the return liquid accommodating tank 4 and communicates with the external atmosphere, so that the liquid flowing back from the hydraulic chamber 31 can smoothly flow into the return liquid accommodating chamber 41. Certainly, the liquid containing part can also be a liquid containing bag, that is, the hydraulic locking system includes a telescopic liquid return containing bag, and a liquid return containing cavity 41 is arranged in the liquid return containing bag, so that after the liquid flows into the liquid return containing bag, the liquid return containing bag can be expanded to contain the liquid, and the liquid return containing bag gradually contracts as the liquid flows out of the liquid return containing bag.

Preferably, with reference to fig. 1, 2 and 7, the hydraulic locking device 3 comprises a brewing chamber 32 adapted to receive the beverage capsule 9, the booster pump 2 being provided with a first outlet port for supplying liquid to the hydraulic chamber 31 for hydraulically locking the beverage capsule 9, the first outlet port being provided with a hydraulic check valve arranged to allow the booster pump 2 to pump liquid under pressure through the first outlet port into the hydraulic chamber 31 and back off. Specifically, behind hydraulic locking device 3 hydraulic pressure locking drink capsule 9, toward the instant of making the logical liquid of pipeline L5, booster pump 2 and hydraulic pressure chamber 31 between the pipeline pressure can the slump, make hydraulic locking device 3 have the trend that an instantaneous hydraulic pressure resets, influence the locking effect of drink capsule 9, cause the situation that liquid spills to appear, pollute drink machine and user's operation mesa, and then influence user's use and experience, for avoiding producing above-mentioned adverse effect, set up hydraulic check valve at first liquid outlet.

Specifically, the booster pump 2 is further provided with a second liquid outlet connected with a brewing line L5, with continued reference to fig. 1, 2 and 7, wherein the brewing line L5 is used for supplying liquid to the beverage capsule 9 for brewing beverage after the beverage capsule 9 is locked by the hydraulic locking device 3. It should be noted that the first liquid outlet and the second liquid outlet may be provided for the booster pump 2 itself, or may be provided for a pipe fitting arranged adjacent to the liquid outlet of the booster pump 2, and are not described again.

Further, the second liquid outlet is provided with a back pressure valve, referring to fig. 1 and 7, the brewing pipeline L5 is sequentially provided with a heating device 5 and a liquid guide tube 33 along the liquid flow direction, the liquid guide tube 33 is used for penetrating into the beverage capsule 9 to input the liquid from the liquid supply cavity 11, so that the back pressure valve is opened when the liquid pressure of the second liquid outlet reaches the opening pressure of the back pressure valve, that is, the back pressure valve is not opened in the process of performing hydraulic locking by the hydraulic locking device 3; and the liquid with certain pressure flows into the drink capsule 9 through the liquid guide pipe 33, the drink filling agent contained in the drink capsule 9 can be dissolved more completely for the infusion type drink capsule 9 (such as instant coffee capsule, milk tea capsule or milk powder capsule, etc.), and the effective substances in the drink filling agent can be well extracted for the extraction type drink capsule 9 (such as Ruyi type coffee capsule, American type coffee capsule or tea capsule, etc.), so that the brewed drink has more fragrant and mellow drinking taste, and the use experience of users is favorably improved. In addition, through addding the back pressure valve, and set for the back pressure valve just to open after certain pressure, can control the liquid velocity of flow through the back pressure valve for liquid can flow through heating device 5 with certain velocity of flow, so, can avoid the too big and not enough situation of liquid heating of appearance of the liquid velocity of flow through heating device 5, be favorable to dissolving or extracting of beverage filler, and then make the drink taste of brewing more fragrant and mellow.

Preferably, a multi-way valve 6 is provided on a downstream side of the liquid outlet of the booster pump 2, and referring to fig. 1 and 7, the multi-way valve 6 includes an inlet pipe chamber portion 610, a first outlet pipe chamber portion 621 as a hydraulic check valve, and a second outlet pipe chamber portion 622 as a back pressure valve. So set up, the valve quantity that needs set up in the pipeline has been few, can effectively reduce the risk of weeping. In addition, the multi-way valve 6 has the functions of a hydraulic one-way valve and a back pressure valve, the structure is compact, the occupied space is small, the miniaturization design of a hydraulic locking system and a beverage machine is facilitated, the beverage machine is enabled to be arranged to be small, and the whole machine can be more attractive.

Specifically, a brewing check valve V4 is further provided on the pipe between the heating means 5 and the liquid guide tube 33, and referring to fig. 7, the brewing check valve V4 is provided to allow the liquid to flow from the pressurizing pump 2 to the liquid guide tube 33 and to be cut off in the reverse direction, and the opening pressure of the back pressure valve is not smaller than the opening pressure of the brewing check valve V4. Specifically, in an optional heating device 5's mode of setting, heating device 5 is in the operating condition all the time, and when the drink machine did not brew the drink, the liquid in the pipeline of making L5 does not flow, so, heating device 5 will heat the liquid of the interior immobility of pipeline all the time, it can generate steam and spill over from catheter 33 to be difficult to avoid, like this, can bring the illusion that the drink machine broke down for the user, consequently, in this technical scheme, through addding making check valve V4, can effectively avoid the steam that generates to spill over from catheter 33, be favorable to promoting user's use experience.

Preferably, with reference to fig. 2 and 3, the beverage machine comprises an air supply system for blowing air into the beverage capsules 9 after brewing is completed, a three-way switching valve V3 is provided on the brewing line L5, and an air supply line L6 of the air supply system is connected as a bypass line to the three-way switching valve V3. Specifically, the three-way switching valve V3 is set to be communicated with the booster pump 2 and the liquid guide pipe 33 when the hydraulic locking device 3 is in a hydraulic locking state, liquid is supplied to the beverage capsule 9 to brew the beverage, and the brewed beverage flows into the liquid containing cup body of a user through the liquid outlet of the beverage machine; the three-way switching valve V3 is also set to be switched to communicate with the air supply pipeline L6 and the liquid guide pipe 33 after brewing is completed, so that residual liquid in the beverage capsule 9 is blown out from the beverage capsule 9, residual liquid is not stored in the beverage capsule 9, the situation of waste of the beverage can be avoided, the probability that the household articles are polluted due to the dropping of the beverage in the process of discarding the beverage capsule 9 by a user can be reduced, and the use experience of the user is favorably improved. In order to make the beverage machine have the function of draining the residual liquid in the beverage capsule 9, the brewing pipeline L5 may be provided with a heating device 5, a brewing one-way valve V4 and a liquid guide tube 33 along the liquid flow direction, referring to fig. 7, a three-way valve V5 is provided in the brewing pipeline L5 between the brewing one-way valve V4 and the liquid guide tube 33, the beverage machine further comprises an air supply system for blowing air into the beverage capsule 9 after brewing is completed, an air supply pipeline L6 of the air supply system is connected with the three-way valve V5, and the three-way valve V5 is arranged to allow the air in the air supply pipeline L6 to flow to the liquid guide tube 33 and. The three-way valve V5 includes a three-way first inlet lumen Q1, a three-way second inlet lumen Q2 and a three-way outlet lumen Q1, the lumen inlet of the three-way second inlet lumen Q2 is connected with the air supply line L6, referring to fig. 8 and 9, and a check structure allowing a one-way passage of fluid is provided in the three-way second inlet lumen Q2, and the check structure may be selected from a lift check structure or a duckbill check structure, and the like, but is not limited thereto. Specifically, no matter the three-way switching valve V3 or the three-way valve V5 is arranged, the liquid in the brewing pipeline L5 is isolated from the air pump 7 in the air supply system when the beverage is brewed, so that the air pump 7 is prevented from being damaged due to the inflow of the liquid, and the service life of the air pump 7 and even the whole machine is prolonged.

In addition, the controller in the beverage machine is configured to communicate the booster pump 2 and the liquid guide pipe 33 after receiving a signal that the hydraulic locking device 3 is in the hydraulic locking state. Specifically, the signal may be triggered when the fluid flowing time in the hydraulic line L3 is longer than a set hydraulic flowing time (e.g., 4 seconds to 10 seconds), or the signal may be triggered when the fluid pressure in the hydraulic chamber 31 is longer than a set hydraulic pressure value, which is not illustrated here.

Preferably, referring to fig. 1 and 7, the beverage maker includes a liquid supply tank 1 provided with a liquid supply chamber 11, and the liquid supply tank 1 is detachably installed. So set up, when need to supply water in the liquid chamber 11, only need take out the liquid supply case 1 from drink machine (also being hydraulic locking system) in, and need not all take whole drink machine (also being hydraulic locking system) to the water source department and carry out the liquid feeding, be convenient for user's use operation. Specifically, after making the completion, hydraulic locking device 3 switches into the in-process that the hydraulic pressure reset state was followed to hydraulic pressure locking state, the user can take out with the liquid feeding with liquid supply tank 1, like this, if the liquid return that comes from hydraulic pressure chamber 31 sets up to directly letting in liquid supply tank 1, the situation that liquid spills over can appear, pollute user's desktop, in this technical scheme, through in flowing back liquid holding chamber 41 with the liquid that comes from hydraulic pressure chamber 31, can avoid appearing above-mentioned unfavorable situation, be favorable to promoting user's use and experience.

Further, a liquid supply line L2 is connected to the liquid supply tank 1, a liquid supply line L2 is used for supplying liquid to the booster pump 2, and a liquid supply pipe check valve is provided at a liquid supply pipe inlet of the liquid supply line L2, the liquid supply pipe check valve being configured to allow liquid from the liquid supply tank 1 to pass through in a single direction. Wherein, the liquid outlet of the liquid supply tank 1 is connected with the liquid inlet of the liquid supply pipe L2 in an alignment way, so that the liquid in the liquid supply tank 1 can flow into the liquid supply pipe L2 through the liquid outlet of the liquid supply tank and the liquid inlet of the liquid supply pipe; the supply line check valve may be provided at the supply line inlet, or may be provided in the supply line L2 near the supply line inlet. So, not only can ensure that liquid can not flow back into the feed tank 1 through feed line L2 to liquid to producing the pollution in the feed tank 1, but also can avoid the liquid from feed line L2 to spill over through the feed line inlet, and then pollute user's operation mesa, all be favorable to promoting user's use and experience.

Specifically, the hydraulic lock system may supply liquid through the collapsible liquid supply bag in addition to the liquid supply tank 1, without being limited thereto. However, since the liquid supply bag needs to be continuously expanded and contracted in the whole life cycle of the hydraulic locking system, the reliability is low, and accordingly the service life of the liquid supply bag is much shorter than that of the liquid supply tank 1, and therefore, in the present application, the liquid supply tank 1 is preferably used for supplying liquid.

The present invention further provides a multi-way valve for a hydraulic locking system, and referring to fig. 1, 5 and 7, the multi-way valve 6 comprises an inlet pipe chamber portion 610, a first outlet pipe chamber portion 621, a second outlet pipe chamber portion 622, a third outlet pipe chamber portion 623 and a fourth outlet pipe chamber portion 624, the first outlet pipe chamber portion 621, the second outlet pipe chamber portion 622 and the third outlet pipe chamber portion 623 are all configured to be normally closed and allow fluid to flow out in one direction, and the fourth outlet pipe chamber portion 624 is configured to be normally open and cut off the flow when the fluid pressure in the valve body is greater than the cut-off pressure of the fourth outlet pipe chamber.

The invention also provides a beverage machine correspondingly, and with reference to fig. 1, 5 and 7, the beverage machine comprises a multi-way valve 6 for a hydraulic locking system. Specifically, the beverage machine comprises a liquid supply cavity 11, a booster pump 2, a multi-way valve 6, a heating device 5 and a hydraulic locking device 3 which are sequentially arranged along the fluid flow direction, the hydraulic locking device 3 comprises a brewing cavity 32 suitable for containing a beverage capsule 9 and a hydraulic cavity 31 used for hydraulically locking the beverage capsule 9, the outlet of a first outlet pipe cavity part 621 is connected with the hydraulic cavity 31, and the outlet of a second outlet pipe cavity part 622 is connected with the brewing cavity 32. The hydraulic locking system comprises a liquid supply cavity 11, a booster pump 2, a multi-way valve 6 and a hydraulic locking device 3 which are sequentially arranged along the flow direction of a fluid. In addition, the liquid pressurized by the booster pump 2 is passed into the hydraulic chamber 31 to perform hydraulic locking, and the pressurized liquid flows into the brewing chamber 32 to supply the liquid to the beverage capsule 9.

In the present invention, the fourth outlet pipe chamber section 624 is normally open and is blocked when the fluid pressure in the valve body is greater than the fourth outlet pipe chamber cut-off pressure, so that when the fluid at the booster pump 2 is gas, the gas is pressurized by the booster pump 2 and then sent into the inlet pipe chamber section 610, then the gas flows from the inlet pipe chamber section 610 to the fourth outlet pipe chamber section 624 and finally flows out from the fourth outlet pipe chamber section 624, at this time, a negative pressure is formed at the liquid inlet of the booster pump 2, so that the liquid in the liquid supply chamber 11 can be slowly sucked to the booster pump 2, after the liquid flows to the booster pump 2, the pressure of the fluid introduced into the inlet pipe chamber section 610 gradually increases, when the fluid pressure in the valve body of the multi-way valve 6 (the fluid pressure value can be selected from the fluid pressure value in the inlet pipe chamber section 610 or the fluid pressure value in the fourth outlet pipe chamber section 624) is greater than the fourth pipe chamber cut-off pressure, that is blocked when the fluid pressure, the fluid from the inlet pipe chamber portion 610 can no longer flow out from the multi-way valve 6 through the fourth outlet pipe chamber portion 624, so that the gas in the piping on the upstream side of the multi-way valve 6 can be made to flow out through the fourth outlet pipe chamber portion 624 by providing the fourth outlet pipe chamber portion 624 in the multi-way valve 6. Specifically, when the beverage machine brews the beverage, the booster pump 2 needs to pump the liquid in the liquid supply cavity 11 to the hydraulic cavity 31 under pressure to implement hydraulic locking, and if only gas exists in the pipeline, the booster pump 2 can only pressurize the gas and then pump the gas to the hydraulic cavity 31, and because of the compressibility of the gas is large, the gas held in the hydraulic cavity 31 is difficult to form high pressure to drive the hydraulic locking device 3 to lock the beverage capsule 9, so that the beverage machine cannot continue to carry out beverage on the beverage capsule 9, thus, a user can easily misunderstand that the beverage machine has a fault and can generate large influence on the brand image and after-sale maintenance of the product, therefore, in the technical scheme, the fourth outlet pipe cavity portion 624 is set to be normally open and is cut off when the fluid pressure in the valve body is larger than the cut-off pressure of the fourth outlet pipe, so that the gas in the pipeline can flow out through the fourth outlet pipe 624, the hydraulic locking device 3 can be successfully locked, the use experience of a user can be greatly improved, the brand image of a product can be improved, and the after-sale maintenance cost of the product can be reduced.

In addition, the outlet of the first outlet pipe chamber portion 621 is connected to the hydraulic pressure chamber 31, and the first outlet pipe chamber portion 621 is provided to be normally closed and to allow a fluid to flow out in one direction, so that the liquid pressurized and pumped by the booster pump 2 can flow from the first outlet pipe chamber portion 621 to the hydraulic pressure chamber 31 through the inlet pipe chamber portion 610. And after the hydraulic locking device 3 hydraulically locks the beverage capsule 9, at the instant of supplying liquid to the beverage capsule 9 accommodated in the brewing cavity 32 through the second outlet pipe cavity portion 622, the pressure of the pipeline between the first outlet pipe cavity portion 621 and the hydraulic cavity 31 is suddenly reduced, so that the hydraulic locking device 3 has a tendency of instantaneous hydraulic reset, the locking effect of the beverage capsule 9 is influenced, the liquid leakage situation is caused, the operation table top of the beverage machine and a user is polluted, and the use experience of the user is influenced, therefore, in order to ensure that the hydraulic locking device 3 has a good hydraulic locking effect on the beverage capsule 9, the first outlet pipe cavity is set to be normally closed, and fluid is allowed to flow out in a single direction.

Specifically, the outlet of the second outlet tube chamber portion 622 is connected to the brewing chamber 32, and the second outlet tube chamber portion 622 is configured to be normally closed and allow one-way fluid flow out so that liquid flowing into the inlet tube chamber portion 610 can flow through the first outlet tube chamber portion 621 toward the beverage capsule 9 to brew the beverage. In addition, the second outlet pipe cavity 622 also has the function of preventing liquid from flowing backwards, so that the booster pump 2 can be protected, and the service life of the hydraulic locking system and the service life of the beverage machine can be prolonged.

In addition, the third outlet pipe chamber portion 623 is also set to be normally closed and allows the fluid to flow out in one direction, so that the liquid from the booster pump 2 can flow out from the multi-way valve 6 through the third outlet pipe chamber portion 623, and since the third outlet pipe chamber portion 623 has the function of preventing the liquid from flowing back, the booster pump 2 can be protected, and the service life of the hydraulic lock system can be prolonged. The third outlet pipe chamber portion 623 may be used as a safety protection component to increase the safety factor of the hydraulic locking system, and of course, an outlet of the third outlet pipe chamber portion 623 may be connected to a liquid outlet pipeline, so that when a user needs to drink liquid, the liquid pressurized by the booster pump 2 flows through the inlet pipe chamber portion 610, the third outlet pipe chamber portion 623, and the liquid outlet pipeline in sequence to flow out of the beverage machine, without being limited thereto.

In this application, the multi-way valve 6 includes the inlet pipe chamber portion 610, first outlet pipe chamber portion 621, second outlet pipe chamber portion 622, third outlet pipe chamber portion 623 and fourth outlet pipe chamber portion 624, powerful, compact structure, and the required space that occupies is little, is favorable to the miniaturized design of hydraulic pressure locking system and drink machine, makes the drink machine set up less, can make the complete machine more have the aesthetic property. In addition, the design of the integrated multi-way valve 6 is also beneficial to cost reduction.

Preferably, referring to fig. 1 to 5, the opening pressures of the first outlet tube chamber section 621, the second outlet tube chamber section 622, and the third outlet tube chamber section 623, which allow the fluid to flow out in one direction, are a first lumen breakover pressure, a second lumen breakover pressure, and a third lumen breakover pressure, respectively, and the fourth lumen cutoff pressure, the first lumen breakover pressure, the second lumen breakover pressure, and the third lumen breakover pressure increase in sequence. With this arrangement, when the fluid at the booster pump 2 is gas, the gas in the pipeline can flow out from the fourth outlet pipe chamber portion 624 of the multi-way valve 6 under the pumping action of the booster pump 2, and then the pressure of the fluid from the booster pump 2 gradually increases as the liquid in the liquid supply chamber 11 flows to the booster pump 2, and after the pressure of the fluid introduced into the inlet pipe chamber portion 610 is greater than the cutoff pressure of the fourth outlet pipe chamber, the fluid can not flow out through the fourth outlet pipe chamber portion 624 any more; then, under the continuous pressurization pumping of the booster pump 2, the liquid pressure in the inlet pipe chamber portion 610 continuously rises, and after the liquid pressure in the inlet pipe chamber portion 610 is not smaller than the first pipe chamber conduction pressure, the liquid can flow to the hydraulic chamber 31 through the first outlet pipe chamber portion 621 to implement hydraulic locking; when the hydraulic locking device 3 is in the hydraulic locking state, the liquid hardly flows out from the first outlet pipe chamber 621, the liquid pressure in the inlet pipe chamber 610 continues to rise, and after the liquid pressure in the inlet pipe chamber 610 is not less than the second pipe chamber conduction pressure, the liquid can flow out from the multi-way valve 6 through the second outlet pipe chamber 622 to brew the beverage; if the pipeline or the component positioned at the downstream side of the outlet of the second outlet pipe cavity part 622 is blocked, the pressurized liquid can not flow out through the second outlet pipe cavity part 622, so that the high-temperature liquid is held in the pipeline, and after the pressure of the liquid in the inlet pipe cavity part 610 is not less than the conduction pressure of the third pipe cavity, the high-temperature and high-pressure liquid can be discharged through the third outlet pipe cavity part 623, so that the safety coefficient of the hydraulic locking system and the beverage machine can be effectively improved. Of course, in order to achieve the above technical effects, in addition to setting the fourth lumen cut-off pressure, the first lumen conducting pressure, the second lumen conducting pressure and the third lumen conducting pressure to be sequentially increased, the electromagnetic switch valves may be disposed on the pipelines connecting the first outlet tube cavity portion 621, the second outlet tube cavity portion 622 and the third outlet tube cavity portion 623, and the opening pressure may be sequentially increased, and the fourth lumen cut-off pressure is smaller than the opening pressure of the electromagnetic switch valve on the pipeline connected to the first outlet tube cavity portion 621, but is not limited thereto.

Further, the fourth lumen cutoff pressure should be no less than 0.1bar and no greater than 1 bar. Specifically, if the fourth chamber cutoff pressure is set too low, the gas in the line is not discharged and the flow of the fourth outlet chamber section 624 is cut off, and the fourth chamber cutoff pressure is not set too high, for example, more than 1bar, in order to prevent excessive liquid from flowing out through the fourth outlet chamber section 624.

To ensure that the liquid can only flow out through the first outlet chamber section 621 after the flow through the fourth outlet chamber section 624 is cut off, the first lumen conduction pressure is preferably not less than 1 bar. Further, the first outlet pipe chamber section 621 is mainly used to function as a reverse shutoff when pressure fluctuations occur in the piping between the booster pump 2 and the hydraulic pressure chamber 31, and therefore, the first pipe chamber conducting pressure does not need to be set too large, for example, not more than 3 bar.

Preferably, the second lumen conduction pressure should be no less than 3bar and no greater than 7 bar. Specifically, after the liquid pressure in the inlet tube cavity portion 610 rises to the second tube cavity conducting pressure, the liquid can flow to the brewing cavity 32 through the second outlet tube cavity portion 622 to brew the beverage, so that the liquid with a certain pressure is introduced into the beverage capsule 9, the beverage filler can be dissolved more completely in the brewing type beverage capsule 9 (such as an instant coffee capsule, a milk tea capsule, a milk powder capsule, or the like), and the effective substances in the beverage filler can be well extracted in the extraction type beverage capsule 9 (such as a Ruyi coffee capsule, an American coffee capsule, or a tea capsule, or the like), so that the brewed beverage has a relatively fragrant and mellow drinking taste, and the use experience of a user can be improved. In addition, the conduction pressure of the second tube cavity is preferably in the range, and the liquid can be controlled to flow through the heating device 5 at a certain flow rate, so that the situation that the liquid is insufficiently heated due to overlarge flow rate of the liquid can be avoided, the dissolution or extraction of the beverage filling agent is facilitated, and the brewed beverage is more fragrant and mellow in taste.

Specifically, if the pipe line connecting the outlet of the second outlet pipe chamber 622 or the components thereof is blocked and the booster pump 2 is not stopped, the liquid pressure on the pipe line will continuously rise, and the temperature of the liquid in the pipe line is relatively high (generally higher than 70 ° or even higher than 90 °) due to the heating device 5 arranged in the pipe line, and if the pipe line or the components thereof burst due to the excessive pressure, the splashed high-temperature and high-pressure liquid will cause damage to the body and property of the user, so the third pipe chamber conducting pressure should not be set too high, for example, not more than 21 bar. In addition, because the pipeline has certain pressure bearing capacity, the conducting pressure of the third pipe cavity does not need to be set to be too small, such as not less than 17 bar.

Preferably, referring to fig. 5, the inlet lumen of the inlet tube chamber portion 610 has a cylindrical shape, and the respective lumens of the first outlet tube chamber portion 621, the second outlet tube chamber portion 622, the third outlet tube chamber portion 623 and the fourth outlet tube chamber portion 624 extend radially outward from the peripheral wall of the inlet lumen, respectively. Specifically, the flow rates of the liquid pumped under pressure by the booster pump 2 are often unbalanced, so that the liquid flowing into the multi-way valve 6 will occasionally impinge on the distal end of the inlet lumen, and therefore, by arranging the respective lumens of the first outlet lumen portion 621, the second outlet lumen portion 622, the third outlet lumen portion 623 and the fourth outlet lumen portion 624 to extend radially outward from the peripheral wall of the inlet lumen (rather than to extend axially outward from the distal end of the inlet lumen), the impingement of the liquid can be effectively mitigated, which is advantageous in preventing the situation where the first outlet lumen portion 621, the second outlet lumen portion 622 and the third outlet lumen portion 623 are conducted or the fourth outlet lumen portion 624 is intercepted due to the instantaneous impact force of the liquid.

Further, the lumen end of the inlet lumen is formed with an expanded portion 611 for fluid buffering, referring to fig. 5, so that the impact of the liquid can be more effectively mitigated. Further, in order to facilitate the opening of the mold for producing the multi-way valve 6, with continued reference to fig. 5, the first outlet tube chamber section 621, the second outlet tube chamber section 622, the third outlet tube chamber section 623, and the fourth outlet tube chamber section 624 are arranged in parallel spaced apart from each other.

Preferably, referring to fig. 5, the first outlet pipe cavity portion 621, the second outlet pipe cavity portion 622 and the third outlet pipe cavity portion 623 are respectively provided with an outlet pipe cavity valve port, an outlet pipe cavity valve core 62A and an outlet pipe cavity elastic restoring piece 62B in the pipe cavity, and the outlet pipe cavity valve core 62A is tightly pressed against the outlet pipe cavity valve port under the action of the outlet pipe cavity elastic restoring piece 62B to form a normally closed state. Of course, the first outlet tube chamber section 621, the second outlet tube chamber section 622, and the third outlet tube chamber section 623 may be provided with other suitable types of check structures, such as a swing check structure or a butterfly check structure, etc., which are not illustrated herein.

To facilitate replacement or maintenance of the components of the outlet lumen spool 62A and the outlet lumen elastic restoring member 62B in the first outlet lumen portion 621, the second outlet lumen portion 622, and the third outlet lumen portion 623, further, with continued reference to fig. 5, the first outlet lumen portion 621, the second outlet lumen portion 622, and the third outlet lumen portion 623 are each provided with an outlet lumen seat 62C and an outlet lumen cover 62D, the outlet lumen seat 62C is integrally formed with the inlet lumen portion 610 and is formed with an outlet lumen valve port at the junction, the outlet lumen cover 62D is detachably mounted to the end of the outlet lumen seat 62C, one end of the outlet lumen elastic restoring member 62B is connected to the outlet lumen cover 62D, and the other end thereof is connected to the outlet lumen spool 62A and presses the outlet lumen spool 62A against the outlet valve port lumen. Wherein the outlet lumen cover 62D is connected to the outlet lumen seat 62C by a detachable mounting means such as a snap connection or a threaded connection. Further, the outlet chamber elastic restoring member 62B of each of the first outlet chamber section 621, the second outlet chamber section 622, and the third outlet chamber section 623 is preferably a spring member.

Specifically, referring to fig. 5, the sealing surface of the outlet lumen spool 62A of the first outlet lumen 621 is spherical and forms a toroidal seal with the corresponding outlet lumen valve port, so that the outlet lumen spool 62A of the first outlet lumen 621 can be easily pushed open by the liquid, and has a good toroidal sealing effect. The sealing surface of the outlet lumen spool 62A of the first outlet tube chamber section 621 is a spherical surface having a large diameter.

In order for the outlet lumen spool 62A of the second outlet lumen portion 622 to require a greater fluid pressure to be ejected, it is preferable, with reference to fig. 5, that the outlet lumen spool 62A of the second outlet lumen portion 622 has its sealing surface configured as a conical surface and forms an annular seal with the corresponding outlet lumen valve port. In addition, the outlet pipe cavity valve core 62A with the conical sealing surface can stably abut against the corresponding outlet pipe cavity valve port to form a better annular sealing effect.

In addition, referring to fig. 5, the outlet lumen spool 62A of the third outlet lumen portion 623 is formed with a spool post for extending into the corresponding outlet lumen valve port, so that the outlet lumen spool 62A of the third outlet lumen portion 623 can be prevented from deflecting under the action of the liquid pressure by the addition of the spool post, which is beneficial to prevent the liquid from leaking out from the gap between the outlet lumen spool 62A and the corresponding outlet lumen valve port due to the deflection of the outlet lumen spool 62A, and ensure that no liquid flows out from the third outlet lumen portion 623 when the liquid pressure in the inlet tube lumen portion 610 is less than the third lumen conduction pressure. To better prevent liquid from leaking out from the gap between the outlet lumen spool 62A of the third outlet tube chamber portion 623 and the corresponding outlet lumen valve port, further, the periphery of the valve port of the outlet lumen valve port is provided with an annular sealing ring 62E, and the outlet lumen spool 62A of the third outlet tube chamber portion 623 is correspondingly formed with an annular groove disposed around the valve stem.

Preferably, referring to fig. 5, a fourth outlet lumen valve port, a fourth outlet lumen valve core 624A and a fourth outlet lumen elastic resetting piece 624B are arranged in a fourth outlet lumen of the fourth outlet lumen section 624; after the inlet fluid pressure of the fourth outlet pipe cavity section 624 exceeds the fourth pipe cavity cut-off pressure, the fourth outlet pipe cavity spool 624A is pressed against the fourth outlet pipe cavity valve port in a sealing manner under the action of the inlet fluid pressure of the fourth outlet pipe cavity section 624, and when the inlet fluid pressure of the fourth outlet pipe cavity section 624 does not exceed the fourth pipe cavity cut-off pressure, the fourth outlet pipe cavity spool 624A is reset under the action of the fourth outlet pipe cavity elastic reset piece 624B and forms an overflow gap with the fourth outlet pipe cavity valve port for fluid to pass through. Specifically, when the fourth outlet lumen is configured to extend vertically upward from the inlet to the outlet (i.e., when the multi-way valve 6 is installed in the beverage maker as shown in fig. 5), then only the fourth outlet lumen valve port and the fourth outlet lumen spool 624A may be disposed within the fourth outlet lumen 624. To improve the sealing engagement between the fourth outlet lumen spool 624A and the fourth outlet lumen valve port, a fourth outlet lumen resilient return 624B is preferably provided in the present embodiment to provide a guiding function during movement of the fourth outlet lumen spool 624A.

To facilitate replacement or maintenance of the fourth outlet lumen valve port, the fourth outlet lumen valve core 624A and the fourth outlet lumen elastic resetting member 624B, further, referring to fig. 5, the fourth outlet lumen 624 is provided with a fourth outlet lumen seat 624C integrally formed with the inlet lumen and a fourth outlet lumen cover 624D detachably mounted at the end of the fourth outlet lumen seat 624C, the fourth outlet lumen elastic resetting member 624B is located in the fourth outlet lumen defined by the fourth outlet lumen seat 624C and the fourth outlet lumen cover 624D, both ends of the fourth outlet lumen elastic resetting member 624B are respectively connected with the fourth outlet lumen valve core 624A and the fourth outlet lumen cover 624D, and the fourth outlet lumen valve port is formed on the fourth outlet lumen cover 624D. The fourth outlet chamber cover 624D is detachably connected to the fourth outlet chamber base 624C by a snap connection, a screw connection, or the like. Further, the fourth outlet lumen elastic return member 624B is preferably a spring member.

Preferably, referring to fig. 1 and 5, the beverage machine further includes a liquid return accommodating tank 4 for accommodating the liquid returned from the hydraulic pressure chamber 31, the liquid return accommodating chamber 41 of the liquid return accommodating tank 4 is communicated with the outside atmosphere, and the liquid return accommodating tank 4 is provided with a liquid return chamber liquid supply pipeline L1 to be able to supply the liquid to the booster pump 2. Thus, when the hydraulic locking system is in the hydraulic locking state, the booster pump 2 can selectively pump the liquid in the liquid return accommodating chamber 41 and/or the liquid supply chamber 11 to the hydraulic chamber 31 to implement hydraulic locking, and when the hydraulic locking system is switched from the hydraulic locking state to the hydraulic resetting state, the hydraulic resetting can be implemented by flowing the liquid in the hydraulic chamber 31 back into the liquid return accommodating chamber 41, so as to implement a hydraulic locking cycle of the hydraulic locking system, of course, an infinite number of hydraulic locking cycles are included in the entire life cycle of the hydraulic locking system, so that compared with flowing the liquid flowing out from the hydraulic chamber 31 back into the liquid supply chamber 11, the technical solution is configured to accommodate the liquid flowing back from the hydraulic chamber 31 into the liquid return accommodating chamber 41, and the occurrence of liquid quality in the liquid supply chamber 11 (i.e. the physical property, pressure and/or pressure of the liquid supply chamber 11 due to multiple times of flowing back of the liquid from the hydraulic, Chemical or biological characteristics and the conditions of the composition thereof) to make the drink brewed by the liquid in the liquid supply cavity 11 have better drinking taste, which is beneficial to improving the use experience of users. In addition, the liquid in the liquid return containing cavity 41 is used for hydraulically locking the beverage capsule 9, so that the frequency of pouring out the liquid in the liquid return containing cavity 41 due to overflow of the liquid return containing cavity can be effectively reduced. Certainly, if the booster pump 2 can completely evacuate the liquid in the liquid return accommodating cavity 41, the liquid return accommodating box 4 cannot overflow after the hydraulic locking system passes through a plurality of hydraulic locking periods, so that the user is not required to pour the liquid in the liquid return accommodating box 4 to improve the convenience of user operation, and the liquid return accommodating box 4 can be fixedly arranged in the beverage machine to improve the reliability of the whole machine, and the use experience of the user is favorably improved.

Further, referring to fig. 1 and 7, the outlets of the third outlet pipe chamber portion 623 and the fourth outlet pipe chamber portion 624 are connected to the liquid return accommodating chamber 41, so that an additional liquid containing part is not required to be added in the beverage machine to accommodate the liquid flowing out from the third outlet pipe chamber portion 623 and the fourth outlet pipe chamber portion 624, and the structure of the whole machine is simple and small.

Specifically, in an optional arrangement of the heating device 5, the heating device 5 is always in an operating state, and when the beverage machine does not brew the beverage, the liquid in the brewing pipeline L5 does not flow, so that the heating device 5 heats the liquid which is still in the pipeline all the time, and steam is inevitably generated and overflows from the brewing cavity 32, and thus, the illusion that the beverage machine fails is brought to the user, and therefore, the brewing one-way valve V4 is preferably arranged on the brewing pipeline L5 between the brewing cavity 32 and the heating device 5, so that the generated steam can be effectively prevented from overflowing from the brewing cavity 32, and the use experience of the user can be improved. Wherein the second lumen opening pressure should be no less than the cracking pressure of the brewing check valve V4.

Preferably, with reference to figures 2 and 3, the machine comprises an air supply system for blowing air into the beverage capsules 9 after brewing is completed, on the pipe between the brewing chamber 32 and the heating device 5 there is a three-way switching valve V3, the air supply line L6 of the air supply system being connected as a by-pass line to the three-way switching valve V3. Specifically, the three-way switching valve V3 is set to be communicated with the booster pump 2 and the beverage capsule 9 accommodated in the brewing cavity 32 when the hydraulic locking device 3 is in a hydraulic locking state, so as to supply liquid to the beverage capsule 9 for brewing beverage, and the brewed beverage flows into the liquid containing cup body of a user through the liquid outlet of the beverage machine; the three-way switching valve V3 is further set to switch and communicate the air supply pipeline L6 and the beverage capsule 9 after brewing is completed, so that residual liquid in the beverage capsule 9 is blown out from the beverage capsule 9, residual liquid is not stored in the beverage capsule 9, the situation of waste of the beverage can be avoided, the probability that the household articles are polluted due to the dropping of the beverage in the process of discarding the beverage capsule 9 by a user can be reduced, and the use experience of the user is improved. In order to make the beverage machine have the function of draining the residual liquid in the beverage capsule 9, the brewing pipeline L5 may be provided with a heating device 5, a brewing one-way valve V4 and a brewing cavity 32 along the liquid flow direction, referring to fig. 7, a three-way valve V5 is provided in the brewing pipeline L5 between the brewing one-way valve V4 and the liquid guide tube 33, the beverage machine further comprises an air supply system for blowing air into the beverage capsule 9 after brewing is completed, an air supply pipeline L6 of the air supply system is connected with the three-way valve V5, and the three-way valve V5 is set to allow the air in the air supply pipeline L6 to flow to the liquid guide tube 33 and be cut. The three-way valve V5 includes a three-way first inlet lumen Q1, a three-way second inlet lumen Q2 and a three-way outlet lumen Q1, the lumen inlet of the three-way second inlet lumen Q2 is connected with the air supply line L6, referring to fig. 8 and 9, and a check structure allowing a one-way passage of fluid is provided in the three-way second inlet lumen Q2, and the check structure may be selected from a lift check structure or a duckbill check structure, and the like, but is not limited thereto. Specifically, no matter the three-way switching valve V3 or the three-way valve V5 is arranged, the liquid in the brewing pipeline L5 is isolated from the air pump 7 in the air supply system when the beverage is brewed, so that the air pump 7 is prevented from being damaged due to the inflow of the liquid, and the service life of the air pump 7 and even the whole machine is prolonged.

Preferably, the controller in the beverage maker is configured to communicate the booster pump 2 and the beverage capsule 9 upon receiving a signal that the hydraulic locking device 3 is in the hydraulic locking state. Specifically, the signal may be triggered when the fluid flowing time in the hydraulic line L3 is longer than a set hydraulic flowing time (e.g., 4 seconds to 10 seconds), or the signal may be triggered when the fluid pressure in the hydraulic chamber 31 is longer than a set hydraulic pressure value, which is not illustrated here.

Specifically, the hydraulic locking device 3 may be provided in various suitable manners, and the hydraulic locking device 3 of the present invention is described below by taking the hydraulic locking device 3 shown in fig. 6 as an example, but is not limited thereto. The hydraulic locking device 3 comprises a hydraulic device base 34 and a hydraulic piston 35 for locking the beverage capsule 9, a piston cavity 37 with a closed end 36 is formed in the hydraulic device base 34, the hydraulic piston 35 is slidably and hermetically arranged in the piston cavity 37, and a hydraulic cavity 31 is formed between the hydraulic piston 35 and the closed end 36. Wherein the hydraulic piston 35 is slidably and sealingly arranged in the piston chamber 37, and the hydraulic locking device 3 is in the reset position when no liquid is introduced into the hydraulic chamber 31. When liquid is input into the hydraulic cavity 31, the hydraulic piston 35 arranged in the piston cavity 37 can move from the reset position to the locking position under the action of the liquid pressure in the hydraulic cavity 31, so that hydraulic locking of the beverage capsule 9 is realized; of course, if the liquid in the hydraulic chamber 31 flows out, the hydraulic piston 35 is driven to perform a reset motion, so that the hydraulic locking device 3 is in the initial reset position again. In addition, the hydraulic locking device 3 is also internally provided with a liquid guide pipe 33 connected with the brewing pipeline L5, and the liquid guide pipe 33 is fixed at the bottom of the hydraulic piston 35 and moves along with the hydraulic piston 35, so that in the process of locking the beverage capsule 9 by the hydraulic piston 35, the liquid guide pipe 33 can puncture the sealing film of the beverage capsule 9 accommodated in the brewing cavity 32, and when liquid flows into the beverage capsule 9 through the liquid guide pipe 33, the beverage filling agent in the beverage capsule 9 can be brewed or extracted to prepare beverage.

The beverage machine is a capsule type beverage machine suitable for brewing or extracting beverage fillers (such as coffee powder, soymilk powder, milk tea powder or tea leaves) in the beverage capsule 9, for example, the beverage machine is a capsule coffee machine, a capsule soymilk machine, a capsule milk tea machine or a capsule tea machine, but not limited thereto.

Specifically, the heating element in the heating device 5 may be disposed inside the pipeline or outside the pipeline, and the heating element may be selected from an electrothermal tube, an electrothermal film or a PTC heating sheet, etc. for heating the liquid in the pipeline. Further, the booster pump 2 may be an electromagnetic pump, not limited thereto. Of course, a flow meter 8 can also be provided on the liquid supply line L2 or the brewing line L5 to precisely control the volume of liquid that passes into the beverage capsule 9.

It should be noted that although the hydraulic locking system is described in the present application mainly for a beverage machine, the hydraulic locking system can also be used in other suitable products, such as automobiles, and the like, which are not illustrated herein.

In particular, other configurations and functions of the hydraulic locking system and the beverage machine according to the embodiment of the present invention are known to those skilled in the art, and are not described herein in detail in order to reduce redundancy.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.