阅读说明：本技术 冰浆制备系统及方法 (Ice slurry preparation system and method ) 是由 张冲 杨鲁伟 魏娟 于 2020-04-30 设计创作，主要内容包括：本发明涉及制冷技术领域,提供一种冰浆制备系统及方法。其中,冰浆制备系统包括制冰系统,制冰系统包括冷却器、过冷解除器和浓冰器,所述冷却器的放热通路的入口用于通入冷水,所述冷却器的放热通路的出口与所述过冷解除器的入口连通,用于将过冷水排出至所述过冷解除器,所述过冷解除器的出口与所述浓冰器的冰浆通路连通,所述冰浆通路与所述浓冰器的冷水通路相连通以使所述冰浆通路内的冷水进入所述冷水通路。本发明提出的冰浆制备系统及方法,利用过冷解除器与浓冰器配合制得高浓冰浆和冷水,浓冰器采用物理方法分离,结构简单,有助于简化制冰过程,降低设备成本。(The invention relates to the technical field of refrigeration, and provides a system and a method for preparing ice slurry. The ice slurry preparation system comprises an ice making system, the ice making system comprises a cooler, a supercooling remover and a thick ice device, an inlet of a heat release passage of the cooler is used for introducing cold water, an outlet of the heat release passage of the cooler is communicated with an inlet of the supercooling remover and used for discharging supercooled water to the supercooling remover, an outlet of the supercooling remover is communicated with an ice slurry passage of the thick ice device, and the ice slurry passage is communicated with a cold water passage of the thick ice device so that the cold water in the ice slurry passage enters the cold water passage. According to the ice slurry preparation system and method provided by the invention, the supercooling remover is matched with the ice concentrator to prepare high-concentration ice slurry and cold water, the ice concentrator is separated by adopting a physical method, the structure is simple, the ice making process is facilitated to be simplified, and the equipment cost is reduced.)

1. An ice slurry preparation system, comprising:

the ice making system comprises a cooler, a supercooling remover and an ice concentrator, wherein the inlet of a heat release passage of the cooler is used for introducing cold water; an outlet of a heat release passage of the cooler is communicated with an inlet of the supercooling remover for discharging the supercooled water to the supercooling remover; the outlet of the supercooling remover is communicated with an ice slurry passage of the ice concentrator, and the ice slurry passage is communicated with a cold water passage of the ice concentrator so that cold water in the ice slurry passage enters the cold water passage.

2. The ice slurry preparation system according to claim 1, wherein a rotatable paddle is connected to said supercooling remover, and said paddle is rotated by being impinged by supercooled water introduced into said supercooling remover.

3. An ice slurry making system according to claim 2, wherein a rotational drive is coupled to said paddle for driving said paddle in rotation.

4. An ice slurry making system according to claim 1, wherein said ice concentrator includes a housing and a filtering partition provided in said housing, said filtering partition dividing said housing into said cold water pathway and said ice slurry pathway.

5. An ice slurry preparation system according to claim 4, wherein said filtering partition is at least one of a mesh structure, a perforated plate or a perforated tube.

6. An ice slurry making system according to claim 1, wherein the ice making system includes a pre-heater having a heat absorption passageway communicating an inlet of the heat release passageway of the cooler with a cold water passageway of the ice concentrator to pre-heat cold water of the cold water passageway of the ice concentrator to a preset temperature.

7. An ice slurry preparation system according to claim 1, wherein a proportional regulating valve is connected to an inlet of a heat release passage of said cooler.

8. The ice slurry preparation system according to any one of claims 1 to 7, further comprising a refrigeration system, wherein the refrigeration system comprises the cooler, a compressor, a condenser and a throttling device which are sequentially communicated through a refrigerant pipeline, and two ends of a heat absorption passage of the cooler are respectively connected with the compressor and the throttling device.

9. An ice slurry making system according to claim 8, wherein when said ice making system includes a pre-heater, an inlet of a heat absorption passage of said pre-heater communicates with a heat release passage of said cooler and a cold water passage of said ice concentrator, and a heat release passage of said pre-heater communicates with a heat absorption passage of said condenser.

10. A method for preparing ice slurry is characterized by comprising the following steps:

the cold water forms supercooled water in the cooler;

the supercooled water impacts the moving part to release the supercooled state of the supercooled water and form low-concentration ice slurry;

and filtering and separating the low-concentration ice slurry to form high-concentration ice slurry and cold water, preheating the cold water to a preset temperature, and then flowing into the cooler again to make ice.

Technical Field

The invention relates to the technical field of refrigeration, in particular to a system and a method for preparing ice slurry.

Background

In the related technology, the ice slurry is prepared by adopting a method of mechanical scraping or mixing and stirring after storing supercooled water. Mechanical scraping generally utilizes a scraper, mechanical oscillation or a thermal method to obtain flake ice and then to crush the flake ice into fine ice crystals, and mechanical equipment of the method has high operation energy consumption. The ice slurry obtained by the method of storing the supercooled water is low in ice content and cannot be directly used as the ice slurry, ice crystals need to be stored in an ice storage tank, and then the ice water is uniformly mixed by using a mechanical stirring mode and the like to generate the high-concentration ice slurry, so that the ice slurry manufacturing process is complex. In addition, in the ice making method in the related art, the refrigerant and the supercooled water exchange heat indirectly, so that the utilization efficiency of the cooling capacity of the refrigerant is affected, and the cost of the refrigeration system is increased.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an ice slurry preparation system, which utilizes the matching of a supercooling remover and a strong ice device, wherein the strong ice device adopts a physical method to separate high-concentration ice slurry and cold water, has a simple structure, is beneficial to simplifying the ice making process and reduces the equipment cost.

The invention also provides a preparation method of the ice slurry.

An ice slurry making system according to an embodiment of the first aspect of the invention comprises:

the ice making system comprises a cooler, a supercooling remover and an ice concentrator, wherein the inlet of a heat release passage of the cooler is used for introducing cold water; an outlet of a heat release passage of the cooler is communicated with an inlet of the supercooling remover and is used for discharging the supercooled water to the supercooling remover; the outlet of the supercooling remover is communicated with an ice slurry passage of the ice concentrator, and the ice slurry passage is communicated with a cold water passage of the ice concentrator so that cold water in the ice slurry passage enters the cold water passage.

According to one embodiment of the present invention, a rotatable paddle is connected in the supercooling remover so that supercooled water introduced into the supercooling remover strikes the paddle to rotate, and the supercooled water forms ice slurry.

According to one embodiment of the invention, a rotary drive is connected to the blade for driving the blade in rotation.

According to one embodiment of the invention, the ice concentrator includes a housing and a filter partition provided in the housing, the filter partition dividing the housing into the cold water passage and the ice slurry passage.

According to one embodiment of the invention, the filtering separator is at least one of a mesh structure, a perforated plate or a perforated tube.

According to one embodiment of the present invention, the ice making system includes a pre-heater, and a heat absorption path of the pre-heater communicates an inlet of the heat release path of the cooler with a cold water path of the ice concentrator to pre-heat cold water of the cold water path of the ice concentrator to a preset temperature.

According to one embodiment of the invention, a proportional regulating valve is connected to the inlet of the heat release passage of the cooler.

According to one embodiment of the invention, the refrigeration system comprises the cooler, the compressor, the condenser and the throttling device which are sequentially communicated through refrigerant pipelines, and two ends of a heat absorption passage of the cooler are respectively connected with the compressor and the throttling device.

According to an embodiment of the present invention, when the ice making system includes a pre-heater, the heat absorption path of the pre-heater communicates the inlet of the heat release path of the cooler with the cold water path of the ice concentrator, and the heat release path of the pre-heater communicates with the heat absorption path of the condenser.

The ice slurry preparation method according to the embodiment of the second aspect of the invention comprises the following steps:

the cold water forms supercooled water in the cooler;

the supercooled water impacts the moving part to release the supercooled state of the supercooled water and form low-concentration ice slurry;

and filtering and separating the low-concentration ice slurry to form high-concentration ice slurry and cold water, preheating the cold water to a preset temperature, and then flowing into the cooler again to make ice.

One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

the ice slurry preparation system comprises an ice making system, wherein the ice making system comprises a cooler, a supercooling remover and a concentrated ice device, cold water enters a heat release passage of the cooler, the cold water releases heat and cools to form supercooled water, the supercooled water flows out of the cooler and enters the supercooling remover, the supercooled water is in a supercooled state removed in the supercooling remover to form ice slurry, and the ice slurry formed in the supercooling remover has low concentration and is called low-concentration ice slurry. The low-concentration ice slurry is introduced into an inlet of an ice slurry passage of the ice concentrator through an outlet of the supercooling remover, and in the process of flowing in the ice slurry passage, cold water in the low-concentration ice slurry seeps out to the cold water passage, the concentration of the ice slurry in the ice slurry passage is gradually increased, namely the high-concentration ice slurry is discharged from the outlet of the ice slurry passage. The embodiment can directly generate high-concentration flow state ice slurry, has a simple structure of the ice making system, and is beneficial to reducing the ice making cost and the investment of ice making equipment.

In the ice slurry preparation method provided by another embodiment of the invention, the supercooled water is impacted on the moving part to form ice crystals, the ice crystals and the water are mixed and contacted in the moving process of the moving part, so that the ice crystals on the moving part are separated from the moving part, the ice crystals and the water are mixed to form low-concentration ice slurry, the moving part can continue to move to form ice crystals again, and the problem of ice crystal condensation accumulation caused by the impact of the supercooled water on the fixed part is solved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an ice slurry preparation system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an ice concentrator of an ice slurry preparation system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a subcooler eliminator of an ice slurry preparation system according to an embodiment of the present invention.

Reference numerals:

1: a liquid storage tank; 2: drying the filter; 3: a throttling device; 4: a concentrator; 5: adjusting a valve; 6: a cold water tank; 7: a water pump; 8: an ice slurry pump; 9: a paddle; 10: a supercooling remover; 11: a preheater; 12: a proportional regulating valve; 13: a cooler; 14: a vapor-liquid separator; 15: a compressor; 16: a condenser; 17: an outlet of the ice slurry passageway; 18: an upper sealing plate of the cylinder body; 19: a housing; 20: an outlet of the cold water passage; 21: a cylinder lower sealing plate; 22: an inlet of an ice slurry passageway; 23: a tank body; 24: a spin axis; 25: an outlet of the subcooler eliminator; 26: an inlet to a subcooler releaser; 27: a perspective mirror; 28: an on-off valve; 29: a filtering separator;

in fig. 1, T denotes a temperature sensor; FM denotes a flow meter; p denotes a pressure sensor.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

An embodiment of the present invention, as shown in fig. 1 to 3, provides an ice slurry preparation system, including an ice making system, the ice making system includes a cooler 13, a supercooling remover 10 and a thickener 4, an inlet of a heat releasing passage of the cooler 13 is used for introducing cold water, an outlet of the heat releasing passage of the cooler 13 is used for discharging supercooled water and is communicated with an inlet 26 of the supercooling remover, an outlet 25 of the supercooling remover is communicated with an ice slurry passage of the thickener 4, and the ice slurry passage is communicated with a cold water passage of the thickener 4 so that cold water in the ice slurry passage enters the cold water passage.

The heat release passage of the cooler 13, the supercooling remover 10 and the ice slurry passage of the ice concentrator 4 are sequentially connected, cold water (with the temperature higher than 0 ℃) enters the heat release passage of the cooler 13, the cold water releases heat and cools to form supercooled water, the supercooled water flows out of the cooler 13 and enters the supercooling remover 10, the supercooled water is in a supercooled state removed in the supercooling remover 10 to form ice slurry, and the ice slurry formed in the supercooling remover 10 is low in concentration and is called low-concentration ice slurry. The low-concentration ice slurry is introduced into the inlet 22 of the ice slurry passage of the ice concentrator 4 through the outlet 25 of the supercooling remover, and in the process of flowing in the ice slurry passage, cold water in the low-concentration ice slurry seeps out to the cold water passage, the concentration of the ice slurry in the ice slurry passage is gradually increased, and the ice slurry is called high-concentration ice slurry, namely the high-concentration ice slurry is discharged from the outlet 17 of the ice slurry passage.

In this embodiment, the supercooled water is supercooled by the supercooling remover 10 to generate low-concentration ice slurry, and then is concentrated by the concentration ice device 4 to generate high-concentration ice slurry.

Compared with the mode of forming ice slurry by mechanically scraping or stirring and relieving supercooling in a cold storage tank, the supercooling remover 10 and the ice concentrator 4 are arranged in the embodiment, so that the concentration of ice crystals in the high-concentration ice slurry discharged by the ice concentrator 4 is promoted, and the application range of the ice slurry preparation system is wider.

In this embodiment and the following embodiments, the heat release path means that the fluid releases heat and cools in the heat release path; the heat absorption path means that the fluid absorbs heat and increases in temperature in the heat absorption path. The cooler, and in the following embodiments, the preheater and the condenser each include a heat-releasing path and a heat-absorbing path that exchange heat with each other. The low-concentration ice slurry and the high-concentration ice slurry are relative concepts, and the ice crystal concentration (ice content) of the high-concentration ice slurry is higher than that (ice content) of the low-concentration ice slurry, and generally, the ice crystal concentrations of the high-concentration ice slurry and the low-concentration ice slurry are not limited.

Typically, the ice crystal concentration (ice fraction) of the low consistency ice slurry exiting the subcooler outlet 25 is between 2% and 3%, and the ice crystal concentration (ice fraction) of the high consistency ice slurry exiting the ice concentrator 4, which is understood to be the mass concentration, i.e., the mass of ice crystals as a proportion of the total mass of the ice slurry fluid, is increased to above 15%.

Wherein, the cold water path can be communicated with the inlet of the heat release path of the cooler 13, so that the cold water of the cold water path can be conveyed to the cooler 13 again, the process is repeated, the next ice slurry preparation is carried out, and the cold quantity of the cold water in the cold water path is fully utilized.

Wherein, be used for setting up ice slurry pump 8 on the pipeline of intercommunication subcooling releaser 10 and dense ice ware 4, carry the low dense ice thick liquid in the subcooling releaser 10 to the ice thick liquid passageway of dense ice ware 4 in through ice slurry pump 8, promoted the conveying efficiency of ice thick liquid.

In one embodiment, as shown in fig. 1 and 3, a rotatable paddle 9 is connected in the supercooling remover 10, so that the supercooled water introduced into the supercooling remover 10 hits the paddle 9 and forms ice slurry, the supercooled state of the supercooled water is released by collision and the supercooled water forms ice crystals, and the paddle 9 rotates under the impact of the water flow, mixing the ice crystals and the water to form low-concentration ice slurry.

The paddle 9 can be rotatably connected to the tank 23 of the supercooling remover 10, the paddle 9 can rotate relative to the tank 23 under the impact force of the supercooled water, power driving is not needed, and energy consumption is low. The self-rotating shaft 24 is rotationally connected in the tank body 23, the paddle 9 is fixed with the self-rotating shaft 24, the paddle 9 drives the self-rotating shaft 24 to rotate in the tank body 23 under the impact of the supercooled water, so that ice crystals formed on the paddle 9 are contacted and mixed with the water in the tank body 23 to be separated from the paddle 9, and the ice crystals on the paddle 9 are prevented from being accumulated to influence the operation of equipment. The blade 9 and the spin axis 24 may be integrally formed or detachably connected.

In this embodiment, the paddle 9 is a moving part, and the supercooled water strikes the paddle 9, and the paddle 9 rotates to drive the ice thereon to mix with the water in the tank 23, which is simpler than a structure for removing the supercooled state of supercooled water by using ultrasonic waves, and is beneficial to formation of ice slurry by mixing ice with water, because the supercooled state of supercooled water is removed by striking the paddle onto a fixed structure (such as a wall surface of the tank 23).

In another embodiment, the paddle 9 is connected with a rotation driver (not shown) for driving the paddle 9 to rotate, and the rotation driver drives the paddle 9 to rotate regularly, so that the paddle 9 is ensured to be in full and uniform contact with supercooled water, and the supercooling relieving effect of the supercooled water is also improved. Wherein the rotary drive may be a motor.

In one embodiment, as shown in connection with fig. 1 and 2, the ice concentrator 4 includes a housing 19 and a filtering partition 29 provided to the housing 19, the filtering partition 29 dividing the interior of the housing 19 into a cold water passage and an ice slurry passage, and the cold water passage and the ice slurry passage communicating through the filtering partition 29. The cold water in the ice slurry passage seeps out of the cold water passage through the filtering and separating piece 29, so that the concentration of the ice slurry and the physical separation of the cold water are realized, the structure is simple, and the operation stability of the equipment is improved.

In one embodiment, the filtering partition 29 is at least one of a mesh structure, a perforated plate, or a perforated tube. The filtering partition 29 has various structural forms and can be selected as required.

The filter separator 29 may have a sheet structure or a cylindrical structure. When the filtering partition 29 has a sheet-like structure such as a plate-like wire mesh, a perforated plate, the interior of the ice concentrator 4 is divided into two partial regions, i.e., right and left, or up and down, or front and rear, by the filtering partition 29. When the filtering partition 29 is a cylindrical structure, such as a cylinder or a perforated pipe surrounded by a mesh structure, the interior of the ice concentrator 4 is divided into an inner part and an outer part by the filtering partition 29, as shown in fig. 2, the ice slurry passage is located inside the cold water passage, and the cold water seepage area is large, which facilitates the separation of ice crystals from cold water.

Of course, the structure of the filtering partition 29 is not limited to the above form, and may be other structures capable of achieving physical separation of cold water from ice crystals.

Referring to fig. 2, the housing 19 is cylindrical, the upper and lower cylindrical sealing plates 18 and 21 are connected to opposite ends of the housing 19, the outlet 17 of the ice slurry passage is provided at the upper end of the housing 19, the inlet 22 of the ice slurry passage is provided at the lower end of the housing 19, the outlet 20 of the cold water passage is provided at the side wall of the housing 19, and a cylindrical filtering spacer 29 is provided in the housing 19, and the filtering spacer 29 is made of a wire mesh.

In one embodiment, as shown in connection with fig. 1, the ice making system further includes a pre-heater 11, and a heat absorption path of the pre-heater 11 communicates an inlet of a heat release path of the cooler 13 with an outlet 20 of a cold water path of the ice concentrator 4 to preheat cold water of the cold water path of the ice concentrator 4 to a preset temperature before entering the cooler 13.

The preset temperature is higher than 0 ℃, can be 0.1-1 ℃ and can be selected as 0.5 ℃, ice crystals are not carried in cold water entering the cooler 13, cold water is enabled to form supercooled water in the cooler 13 and ice slurry is not formed, the preset temperature is not too high, and the cold energy of the cooler 13 is saved to fully utilize heat energy and cold energy.

Referring to fig. 1, a temperature sensor T is disposed in the ice making system, and a first temperature sensor and a second temperature sensor are disposed at an inlet end and an outlet end of a heat releasing passage of the cooler 13, respectively, the first temperature sensor being configured to measure a temperature of cold water entering the heat releasing passage of the cooler 13, and the second temperature sensor being configured to measure a temperature of supercooled water flowing out of the heat releasing passage of the cooler 13, so as to accurately monitor a heat exchange effect of the heat releasing passage of the cooler 13.

In one embodiment, a proportional regulating valve 12 is connected to an inlet of a heat release passage of the cooler 13. The opening degree of the proportion regulating valve 12 is used for regulating the flow of cold water entering the cooler 13 so as to ensure that the supercooled water can stably generate ice slurry at a proper supercooling degree. Wherein, proportional control valve 12 is electronic proportional control valve, convenient control and degree of automation height.

In one embodiment, the ice-making system includes a cold water tank 6, the cold water tank 6 being in communication with the outlet 20 of the cold water pathway of the ice concentrator 4 such that cold water discharged from the outlet 20 of the cold water pathway of the ice concentrator 4 is stored within the cold water tank 6. The outlet of the cold water tank 6 is communicated with the heat absorption passage of the preheater 11, and cold water in the cold water tank 6 is preheated by the preheater 11 and then sent to the cooler 13 to form supercooled water. Wherein, a water pump 7 is arranged between the outlet of the cold water tank 6 and the heat absorption passage of the preheater 11 so as to send the cold water in the cold water tank 6 into the heat absorption passage of the preheater 11. The outlet of the cold water tank 6 is provided with an on-off valve 28, and the on-off valve 28 controls the on-off of the cold water supply when the ice making system is started or stopped.

The outlet of the cold water tank 6 can be provided with a temperature sensor to measure the temperature of the cold water flowing out of the cold water tank 6, and then the heat supply amount of the preheater 11 can be adjusted according to the requirement.

In one embodiment, the ice making system comprises a preheater 11, a cooler 13, a supercooling remover 10, an ice slurry pump 8, an ice concentrator 4, a cold water tank 6 and a water pump 7, wherein water in the cold water tank 6 is firstly sent to the preheater 11 by the water pump 7, cold water is preheated to a proper preheating temperature to eliminate ice crystals in the cold water, then the flow rate is controlled by a proportional control valve 12, then the preheated cold water is sent into a cooler 13, the cold water is reduced into supercooled water at the water temperature in the cooler 13, the supercooled water enters a cold releaser and then impacts a spinning blade 9 to release the supercooled state through collision, fine ice crystals are generated, under the impact of the supercooled water, the paddle 9 rotates to mix ice crystals and water, the generated low-concentration ice slurry is sent to the concentration ice device 4 by the ice slurry pump 8, the separation of the ice crystals and the water is realized, high-concentration ice slurry is formed, and the filtered cold water flows back to the cold water tank 6 for later use through the regulating valve 5.

In the embodiment, the ice crystals and the cold water are separated to generate high-concentration ice slurry, and the adjustment of the concentration of the ice slurry can be realized by controlling the flow of the cold water. Wherein, the ice concentrator 4 adopts a physical filtration method to separate ice crystals from cold water to generate high-concentration ice slurry, and has simple structure and better separation effect.

The ice making system of this embodiment further includes a flow meter FM for measuring the flow rate of the cold water in the pipeline, and the position of the flow meter FM may be the outlet of the cold water passage of the ice concentrator 4, the outlet of the pipeline corresponding to the position of the proportional control valve 12, or the outlet of the heat absorption passage of the preheater 11.

In one embodiment, the ice slurry preparation system further comprises a refrigeration system, the refrigeration system comprises a cooler 13, a compressor 15, a condenser 16 and a throttling device 3 which are sequentially communicated, and two ends of a heat absorption passage of the cooler 13 are respectively connected with the compressor 15 and the throttling device 3 so as to be filled with refrigerant. The cooler 13 is used as an evaporator in the refrigeration system, the refrigerant is introduced into a heat absorption passage of the cooler 13, the refrigerant and cold water directly exchange heat in the cooler 13, secondary heat transfer is not required through an intermediate medium, and the utilization rate of cold carried in the refrigerant is improved.

The throttling device 3 may be an expansion valve or a capillary tube. The condenser 16 may be a tube and fin heat exchanger.

In the refrigeration system, the high-temperature and high-pressure refrigerant is discharged by the compressor 15, enters the condenser 16 for heat dissipation (heat dissipation to ambient air or heat supply to other systems) and then becomes saturated liquid, passes through the throttling device 3, becomes a low-pressure and low-temperature vapor-liquid mixture, then enters the heat absorption passage of the cooler 13 for cold exchange with cold water, and is completely evaporated and then is sucked into the compressor 15.

During the operation of the ice making system, the change of the ambient temperature can influence the cold output by the refrigerating system, and the change of the cold can influence the supercooling degree of the supercooled water. In order to ensure that the supercooled water stably runs under the premise of proper supercooling degree T1, the flow of the supercooled water is adjusted through the proportion adjusting valve 12 according to the change of the supercooling degree T1, so that the requirement of stable ice making in different environmental temperatures is met.

In one embodiment, when the ice making system includes the pre-heater 11, the heat releasing path of the pre-heater 11 is communicated with the heat absorbing path of the condenser 16, that is, the heat released from the condenser 16 is supplied to the heat releasing path of the pre-heater 11, the pre-heater 11 does not need an additional heat supply, and the ice making system makes full use of the cooling capacity and the heating capacity of the refrigeration system.

Of course, the heat source of the preheater 11 may be other external heat sources, and the heat supply amount may be automatically adjusted according to the temperature and the flow rate of the cold water, so as to maintain the temperature of the cold water entering the heat release passage of the cooler 13.

In one embodiment, a vapor-liquid separator 14 is provided at the refrigerant inlet of the compressor 15 to ensure that the refrigerant enters the compressor 15 in a gaseous state. A liquid storage tank 1 is arranged at a refrigerant outlet of the condenser 16, a drying filter 2 is arranged at an outlet of the liquid storage tank 1, air and water vapor in the refrigerating system need to be discharged before the refrigerating system runs, but the water vapor is difficult to be pumped out through a vacuum pump, and the drying filter 2 is arranged to remove the water vapor in a pipeline of the refrigerating system, so that the stability of the refrigerating system is improved. The piping of the refrigeration system is also provided with a sight glass 27 to observe the flow state of the refrigerant in the piping of the refrigeration system. The pipeline of the refrigeration system is also provided with a pressure sensor P to monitor the pressure of a refrigerator in the refrigeration system.

According to the ice slurry preparation system in the embodiment, the secondary heat exchange of the refrigerant is reduced, the evaporation temperature of the refrigeration system is increased, and the ice making efficiency is improved; the ice concentrator 4 is used for concentrating the low-concentration ice slurry generated by the supercooled water ice making method into high-concentration ice slurry for direct use, and the traditional method for obtaining the ice slurry by mixing and stirring is simplified, so that the purposes of reducing the ice making cost and the equipment cost are achieved.

In another embodiment of the present invention, there is also provided an ice slurry preparation method, including: the cold water forms supercooled water in the cooler; the supercooled water impacts the moving part to release the supercooled state of the supercooled water and form low-concentration ice slurry; and filtering and separating the low-concentration ice slurry to form high-concentration ice slurry and cold water, preheating the cold water to a preset temperature, and then making ice by flowing into the cooler again.

The supercooled water is impacted on the moving part to form ice crystals, the ice crystals and the water are mixed and contacted in the moving process of the moving part, the ice crystals on the moving part are separated from the moving part, the ice crystals and the water are mixed to form low-concentration ice slurry, and the moving part can continue to move to form ice crystals again.

The low-concentration ice slurry is filtered and separated by a physical method to obtain the high-concentration ice slurry, the process for obtaining the high-concentration ice slurry is simple, and the high-concentration ice slurry is conveniently and directly utilized. The cold water obtained by separating the low-concentration ice slurry can be continuously recycled, ice crystals in the cold water are removed through preheating and then the cold water enters the cooler again, the cold water is recycled, and the cold water is prevented from forming the ice crystals in the cooler.

The ice slurry preparation method of the embodiment can be implemented by using the ice slurry preparation system of the embodiment. Referring to fig. 1 to 3, when the ice slurry preparation system of the above embodiment performs the ice slurry preparation method of the present embodiment, all the advantages of the above embodiment are achieved, and no further description is provided herein.

The embodiment provides a method for directly preparing high-concentration flow state ice slurry, which is beneficial to improving ice making efficiency and reducing ice making cost.

In another embodiment, cold water (water temperature 0.1-1 deg.C, optionally 0.5 deg.C) forms subcooled water (water temperature-1 deg.C-2 deg.C) in the cooler;

the supercooled water impacts on the moving part to remove the supercooled state of the supercooled water and form low-concentration ice slurry, wherein the low-concentration ice slurry is an ice-water mixture at 0 ℃, and the ice content is 1.2-2.5%;

the low-concentration ice slurry is filtered and separated to form high-concentration ice slurry and cold water (the temperature is 0 ℃), wherein the high-concentration ice slurry is an ice-water mixture at the temperature of 0 ℃, the ice content is 5-20%, and the cold water flows into the cooler again after being preheated to the preset temperature (the preset temperature is 0.1-1 ℃, and 0.5 ℃ can be selected) to make ice. The ice making efficiency of the embodiment is high, and the cost is reduced.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.