阅读说明：本技术 螺杆机热泵冷暖机组实现供热的方法 (Method for realizing heat supply of screw machine heat pump cooling and heating unit ) 是由 袁成利 李佳育 于 2021-09-27 设计创作，主要内容包括：本发明涉及环保消防以及新材料领域,尤其涉及螺杆机热泵冷暖机组实现供热的方法。机组包含低温热泵压缩机(1),低温热泵压缩机(1)供给连接一个以上的工作单元,一个以上的工作单元并列布置并且通过对应管道连接到低温热泵压缩机(1)上,低温热泵压缩机(1)的高温工质出口连接着四通换向阀(11),四通换向阀(11)的其余三个口连接着高效换热罐(2)、低温工质回路管、翅片蒸发器(6)；喷液增焓器(8)伸出的管道连接着制热膨胀阀(3)和单向阀(4)连接着翅片蒸发器(6)的翅片蒸发器分液口(5)汇集起来的口部；低温工质回路管回向连接着低温热泵压缩机(1)的低温工质进口。(The invention relates to the field of environmental protection fire control and new materials, in particular to a method for realizing heat supply of a screw machine heat pump cooling and heating unit. The unit comprises a low-temperature heat pump compressor (1), wherein the low-temperature heat pump compressor (1) is connected with more than one working unit in a supplying manner, the more than one working units are arranged in parallel and are connected to the low-temperature heat pump compressor (1) through corresponding pipelines, a high-temperature working medium outlet of the low-temperature heat pump compressor (1) is connected with a four-way reversing valve (11), and the other three ports of the four-way reversing valve (11) are connected with a high-efficiency heat exchange tank (2), a low-temperature working medium loop pipe and a fin evaporator (6); a pipeline extending out of the liquid spraying enthalpy increasing device (8) is connected with a heating expansion valve (3) and a check valve (4) is connected with a port part collected by a fin evaporator liquid separation port (5) of a fin evaporator (6); the low-temperature working medium loop pipe is connected with a low-temperature working medium inlet of the low-temperature heat pump compressor (1) in a loop direction.)

1. The method for realizing heat supply by the screw machine heat pump cooling and heating unit is characterized in that the screw machine heat pump cooling and heating unit is utilized, the unit comprises a low-temperature heat pump compressor (1), the low-temperature heat pump compressor (1) is connected with more than one working unit,

a high-temperature working medium outlet of the low-temperature heat pump compressor (1) is connected with a four-way reversing valve (11), and the other three ports of the four-way reversing valve (11) are connected with a high-efficiency heat exchange tank (2), a low-temperature working medium loop pipe and a fin evaporator (6); a hot water pipe (12) extends out of the high-efficiency heat exchange tank (2), the high-efficiency heat exchange tank (2) is connected with a liquid spraying enthalpy increasing device (8), the liquid spraying enthalpy increasing device (8) comprises a liquid spraying electric valve (9) and a liquid spraying electronic expansion valve (10), and the liquid spraying enthalpy increasing device (8) can realize liquid spraying enthalpy increasing; a pipeline extending out of the liquid spraying enthalpy increasing device (8) is connected with a heating expansion valve (3) and a check valve (4) is connected with a port part collected by a fin evaporator liquid separation port (5) of a fin evaporator (6); the low-temperature working medium loop pipe is connected with a low-temperature working medium inlet of the low-temperature heat pump compressor (1) in a loop direction;

comprises the following steps;

one low-temperature heat pump compressor (1) simultaneously corresponds to a plurality of working units; high-temperature working media enter a four-way reversing valve (11), then enter a high-efficiency heat exchange tank (2) and exchange heat with warm water, then pass through a liquid spraying enthalpy increasing device (8) to realize liquid spraying enthalpy increasing, and then enter a fin evaporator (6) to exchange heat; heat exchange is realized.

2. The method for realizing heat supply of the screw machine heat pump cooling and heating unit according to claim 1, wherein the working units comprise five; one for defrosting and four for heating.

3. The method for realizing heat supply of the screw machine heat pump cooling and heating unit as claimed in claim 2, further comprising a step of auxiliary defrosting, wherein the auxiliary defrosting is realized by connecting a main air duct with a tee joint (13) to selectively guide hot air to a defrosting outlet (14) and then blowing the hot air to a frosting position through a connecting pipeline.

4. The method for realizing heat supply of the screw machine heat pump cooling and heating unit according to claim 2, further comprising selecting a hot air mode or a hot water mode, wherein the hot air mode is that a fan (7) drives air to circulate and a fin evaporator (6) realizes air flow; the hot water mode is that the lifting device (17) drives the fixed plate (19) to descend by the lifting shaft (18), and the water pipe (20) adhered on the fixed plate exchanges heat with the fin evaporator (6) after contacting the fin evaporator (6), so that water heating is realized, and hot water is directly discharged.

Technical Field

The invention relates to the field of environment-friendly refrigeration, in particular to a method for realizing heat supply of a screw machine heat pump cooling and heating unit.

Background

The traditional low-temperature screw adopts a hundred-percent refrigerant equivalent large four-way valve full-cutting defrosting scheme when defrosting, so that liquid impact and damp vehicle are easily caused, the safety of a compressor is extremely low, the defrosting time is long, about ten to twenty minutes is needed, the water temperature is sharply reduced, the heating temperature fluctuation is large, the power consumption is large, and the user experience feeling is extremely poor.

Disclosure of Invention

The purpose of the invention is as follows: in order to provide a method for realizing heat supply of the screw machine heat pump cooling and heating unit with better effect, a plurality of substantial technical effects of a specific implementation part are specifically aimed at.

In order to achieve the purpose, the invention adopts the following technical scheme:

the first scheme is as follows:

the screw machine heat pump cooling and heating unit is characterized by comprising a low-temperature heat pump compressor 1, wherein the low-temperature heat pump compressor 1 is connected with more than one working unit, the more than one working units are arranged in parallel and are connected to the low-temperature heat pump compressor 1 through corresponding pipelines,

a high-temperature working medium outlet of the low-temperature heat pump compressor 1 is connected with a four-way reversing valve 11, and the other three ports of the four-way reversing valve 11 are connected with a high-efficiency heat exchange tank 2, a low-temperature working medium loop pipe and a fin evaporator 6; the high-efficiency heat exchange tank 2 extends out of a hot water pipe 12, the high-efficiency heat exchange tank 2 is connected with a liquid spraying enthalpy increasing device 8, the liquid spraying enthalpy increasing device 8 comprises a liquid spraying electric valve 9 and a liquid spraying electronic expansion valve 10, and the liquid spraying enthalpy increasing device 8 can realize liquid spraying enthalpy increasing; a pipeline extending out of the liquid spraying enthalpy increasing device 8 is connected with a heating expansion valve 3 and a one-way valve 4 is connected with an opening part formed by gathering the liquid dividing ports 5 of the fin evaporator 6; the low-temperature working medium loop pipe is connected with a low-temperature working medium inlet of the low-temperature heat pump compressor 1 in a loop direction.

The invention has the further technical scheme that the working units comprise five working units; one for defrosting and four for heating.

The invention further adopts the technical scheme that a fan 7 is arranged on the side of the fin evaporator 6.

The invention further adopts the technical scheme that a wind direction channel of the fan 7 is communicated into a main wind channel, the main wind channel is connected with a tee joint 13, and the other two through ports of the tee joint are a defrosting outlet 14 and an application outlet 15 respectively; the hot air from the defrosting outlet 14 can defrost the frost from the outside, and the hot air from the outlet 15 is used to heat the air.

The invention further adopts the technical scheme that the device also comprises a hot water heat exchange system which can be detachably connected with the fin evaporator 6, the detachable hot water heat exchange system comprises a lifting device 17, a fixed plate 19 is connected below a lifting shaft 18 of the lifting device 17, and a water pipe 20 is adhered on the fixed plate.

A further solution of the invention is that the lifting device 17 is fixed to the fixed part 16, the fixed part 16 being a housing.

Scheme II:

the method for realizing heat supply by the screw machine heat pump cooling and heating unit is characterized in that the screw machine heat pump cooling and heating unit is utilized, the unit comprises a low-temperature heat pump compressor 1, the low-temperature heat pump compressor 1 is supplied and connected with more than one working unit, the more than one working units are arranged in parallel and connected to the low-temperature heat pump compressor 1 through corresponding pipelines,

a high-temperature working medium outlet of the low-temperature heat pump compressor 1 is connected with a four-way reversing valve 11, and the other three ports of the four-way reversing valve 11 are connected with a high-efficiency heat exchange tank 2, a low-temperature working medium loop pipe and a fin evaporator 6; the high-efficiency heat exchange tank 2 extends out of a hot water pipe 12, the high-efficiency heat exchange tank 2 is connected with a liquid spraying enthalpy increasing device 8, the liquid spraying enthalpy increasing device 8 comprises a liquid spraying electric valve 9 and a liquid spraying electronic expansion valve 10, and the liquid spraying enthalpy increasing device 8 can realize liquid spraying enthalpy increasing; a pipeline extending out of the liquid spraying enthalpy increasing device 8 is connected with a heating expansion valve 3 and a one-way valve 4 is connected with an opening part formed by gathering the liquid dividing ports 5 of the fin evaporator 6; the low-temperature working medium loop pipe is connected with a low-temperature working medium inlet of the low-temperature heat pump compressor 1 in a return direction;

comprises the following steps;

one low-temperature heat pump compressor 1 corresponds to a plurality of working units at the same time; high-temperature working medium enters the four-way reversing valve 11, then enters the high-efficiency heat exchange tank 2, exchanges heat with warm water, then passes through the liquid injection enthalpy increasing device 8 to realize liquid injection enthalpy increase, and then enters the fin evaporator 6 to exchange heat; heat exchange is realized.

The invention has the further technical scheme that the working units comprise five working units; one for defrosting and four for heating.

The invention further adopts the technical scheme that the defrosting method also comprises the step of auxiliary defrosting, wherein the auxiliary defrosting is realized by connecting the main air duct with the tee joint 13 and selectively guiding hot air to the defrosting outlet 14 and then blowing the hot air to a frosting position through the connecting pipeline.

The invention further adopts the technical scheme that a hot air mode or a hot water mode is selected, wherein the hot air mode is that a fan 7 drives air to circulate and a fin evaporator 6 realizes air flow; in the hot water mode, the lifting device 17 drives the fixing plate 19 to descend by using the lifting shaft 18, and the water pipe 20 adhered to the fixing plate exchanges heat with the fin evaporator 6 after contacting the fin evaporator 6, so that water heating is realized, and hot water is directly discharged.

Compared with the prior art, the invention adopting the technical scheme has the following beneficial effects: one-tenth to one-twentieth block defrosting is adopted during defrosting, small-component gradual defrosting is realized while heating is carried out, defrosting speed is extremely high, each defrosting block is completed in ten to twenty seconds, the compressor is always in the optimal state, defrosting energy consumption is extremely low, water temperature fluctuation is basically avoided, comprehensive energy efficiency is high, and user experience is excellent.

Drawings

To further illustrate the present invention, further description is provided below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of the inventive structure;

FIG. 2 is an enlarged view of a portion of the low temperature heat pump compressor;

FIG. 3 is a schematic view of a portion of the structure of FIG. 1;

FIG. 4 is a schematic view of a portion of the structure of FIG. 1;

FIG. 5 is a further development of the invention;

FIG. 6 is a block diagram of a further improvement of the present patent;

wherein: 1. a low temperature heat pump compressor; 2. a high-efficiency heat exchange tank; 3. a heating expansion valve; 4. a one-way valve; 5. a liquid separation port of the finned evaporator; 6. a finned evaporator; 7. a fan; 8. an enthalpy-increasing economizer; 9. a liquid spraying electric valve; 10. a liquid-spraying electronic expansion valve; 11. a four-way reversing valve; 12. a hot water pipe; 13. a tee joint; 14. a defrosting outlet; 15. an application outlet; 16. a fixed portion; 17. a lifting device; 18. a lifting shaft; 19. a fixing plate; 20. a water pipe.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The patent provides a plurality of parallel schemes, and different expressions belong to an improved scheme based on a basic scheme or a parallel scheme. Each solution has its own unique features. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The fixing means, which is not described herein, may be any one of screw fixing, bolt fixing, or glue bonding.

The first embodiment is as follows: with reference to all of the accompanying drawings; the screw machine heat pump cooling and heating unit is characterized by comprising a low-temperature heat pump compressor 1, wherein the low-temperature heat pump compressor 1 is connected with more than one working unit, the more than one working units are arranged in parallel and are connected to the low-temperature heat pump compressor 1 through corresponding pipelines,

a high-temperature working medium outlet of the low-temperature heat pump compressor 1 is connected with a four-way reversing valve 11, and the other three ports of the four-way reversing valve 11 are connected with a high-efficiency heat exchange tank 2, a low-temperature working medium loop pipe and a fin evaporator 6; the high-efficiency heat exchange tank 2 extends out of a hot water pipe 12, the high-efficiency heat exchange tank 2 is connected with a liquid spraying enthalpy increasing device 8, the liquid spraying enthalpy increasing device 8 comprises a liquid spraying electric valve 9 and a liquid spraying electronic expansion valve 10, and the liquid spraying enthalpy increasing device 8 can realize liquid spraying enthalpy increasing; a pipeline extending out of the liquid spraying enthalpy increasing device 8 is connected with a heating expansion valve 3 and a one-way valve 4 is connected with an opening part formed by gathering the liquid dividing ports 5 of the fin evaporator 6; the low-temperature working medium loop pipe is connected with a low-temperature working medium inlet of the low-temperature heat pump compressor 1 in a loop direction. The technical scheme of the invention has the following substantial technical effects and the realization process: comprises the following steps;

one low-temperature heat pump compressor 1 corresponds to a plurality of working units at the same time; high-temperature working medium enters the four-way reversing valve 11, then enters the high-efficiency heat exchange tank 2, exchanges heat with warm water, then passes through the liquid injection enthalpy increasing device 8 to realize liquid injection enthalpy increase, and then enters the fin evaporator 6 to exchange heat; heat exchange is realized.

Creatively, the above effects exist independently, and the combination of the above results can be completed by a set of structure.

It should be noted that the modules of this patent belong to the integration of the modules of the prior art, and do not relate to new modules. Even if part of the modules is used in a program, the program is of course a known program.

Example two: as a further development or a parallel solution or alternatively an independent solution, the working units comprise five; one for defrosting and four for heating. The technical scheme of the invention has the following substantial technical effects and the realization process: the scheme provided by the embodiment can realize heating while defrosting is realized. Essentially one of which is dedicated to defrost.

Example three: as a further development or a parallel or optionally independent solution, a fan 7 is arranged on the side of the finned evaporator 6. The technical scheme of the invention has the following substantial technical effects and the realization process: the fan can drive the circulation of air, further increases the efficiency of heat transfer.

Example four: as a further improvement scheme or a parallel scheme or an optional independent scheme, a wind direction channel of the fan 7 is communicated into a main wind channel, the main wind channel is connected with a tee 13, and the other two ports of the tee are a defrosting outlet 14 and an application outlet 15 respectively; the hot air from the defrosting outlet 14 can defrost the frost from the outside, and the hot air from the outlet 15 is used to heat the air. The technical scheme of the invention has the following substantial technical effects and the realization process: except for one working heating defrosting, under special conditions, hot air exchanged by other working units can be guided to a frosting position for defrosting. Faster defrosting is achieved. Namely, the method also comprises a step of auxiliary defrosting, wherein the main air duct is connected with the tee joint 13, hot air can be selectively guided to the defrosting outlet 14, and then the connecting pipeline blows to the frosting position to realize defrosting.

Example five: as a further improvement, or a parallel solution or an alternative independent solution, the system also comprises a hot water heat exchange system which can be detachably connected with the fin evaporator 6, the detachable hot water heat exchange system comprises a lifting device 17, a fixed plate 19 is connected below a lifting shaft 18 of the lifting device 17, and a water pipe 20 is adhered on the fixed plate. The technical scheme of the invention has the following substantial technical effects and the realization process: except that the heat transfer is carried out to the air of above-mentioned embodiment, this patent can also carry out the heat transfer to water. The application is greatly expanded; the air is heated when the air needs to be heated, and when the water needs to be heated, the water pipe directly exchanges heat with the fins, so that hot water is supplied and realized. Namely, the method also comprises the selection of a hot air mode or a hot water mode, wherein the hot air mode is that a fan 7 drives air to circulate and the fin evaporator 6 realizes air flow; in the hot water mode, the lifting device 17 drives the fixing plate 19 to descend by using the lifting shaft 18, and the water pipe 20 adhered to the fixing plate exchanges heat with the fin evaporator 6 after contacting the fin evaporator 6, so that water heating is realized, and hot water is directly discharged.

Example six: as a further development or in a parallel or alternatively independent solution, the lifting device 17 is fixed to the fixed part 16, the fixed part 16 being a housing. The technical scheme of the invention has the following substantial technical effects and the realization process: this embodiment provides concrete elevation structure's realization and fixed knot structure, and similar realization structure all is in the protection of this patent.

As a further possible modification and illustration: the multi-air-cavity multi-section independent evaporator is adopted, multiple groups of independent enthalpy-increasing pipe groups are added, the independent water path systems are connected in parallel, the dual-purpose of cooling and heating is realized, the independent enthalpy is increased, the control of an independent main path valve is realized, the continuous operation is realized during the low-temperature screw heating, the defrosting is not stopped, the water temperature is not reduced, and the effect of high efficiency and energy saving is finally achieved. That is, this patent adopts the many wind cavities of evaporimeter to contain a plurality of tuyeres promptly, also is the independent evaporimeter of multistage simultaneously.

The patent adopts a multi-section independent non-stop defrosting scheme, water temperature change in a system is not influenced during defrosting, defrosting speed is extremely high, and defrosting of one plate is finished in 10-20 seconds.

The water side heat exchanger of this patent adopts the most advanced independent high-efficient tank heat exchanger at present to carry out the water route parallelly connected, and the scale resistance can the reinforce, and resistant silt scouring ability is strong, long-life design, and copper pipe thickness reaches 1.76 MM. And the thickness of the common shell and tube heat exchanger is only 0.45MM, so that the tube is easy to penetrate into water, and the whole system is scrapped.

The air side heat exchanger adopts a refrigerant liquid flow direction shunting scheme and a secondary cold and heat compensation scheme, and the utilization rate of the heat exchanger can reach more than 99.8 percent so as to ensure the heating capacity and the energy efficiency of the whole machine and not attenuate for a long time.

The main control panel of the outdoor unit is provided with the liquid crystal digital display tube, so that the water temperature, the unit capacity output and the like can be displayed in real time, the running state of the unit can be directly checked and inquired, and a fault code can be automatically displayed on the digital tube, so that the reason can be conveniently searched; in addition, the same functions are arranged on the line controller, so that the operation is flexible and convenient; and can realize the parallel control of a plurality of units, and all units are controlled jointly through a wire controller.

When a plurality of units are used in parallel, the whole system cannot be shut down due to the fault of one unit;

the perfect safety protection system is provided with various high-precision sensors for monitoring and various protection devices; a sensor: the system comprises an exhaust temperature sensor, an outdoor heat exchanger pipe temperature sensor, an anti-freezing temperature sensor, a refrigerant high-pressure sensor, a low-pressure sensor, a water inlet pressure sensor, a water outlet temperature sensor and the like. The protection device comprises: the unit has high and low voltage protection switch, starter fault protection, earth leakage protection, crankcase heater, fusible plug, compressor overcurrent protector, compressor over-high exhaust pressure, over-low suction pressure, internal overload relay, phase protector, built-in automatic protector for instantaneous starting in case of power failure, etc. The above various protection functions can be reset manually, and alarm information is stored and displayed.

The system has wide operation temperature (-50-43 ℃), and can normally operate under severe conditions;

the complete self-diagnosis function of the patent can quickly and accurately find the problems in the system; the automatic recovery start-up function ensures that the unit can automatically recover to the previously set operation mode even after power failure occurs.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is to be limited to the embodiments described above.