CN211476369U - Frostless air source air supply enthalpy increasing heat pump for removing water from solution - Google Patents

Abstract

The utility model provides a frost-free air source air-supplying and enthalpy-increasing heat pump for solution dewatering, comprising a heating cycle of air-increasing and enthalpy increasing and an icing and dewatering cycle; the icing and dewatering cycle includes a solution heat exchange pipeline and a storage liquid circulation pipeline and a solution regeneration pipeline, wherein the solution heat exchange pipeline includes a first evaporator, a heat exchange tower, a second shut-off valve and a first pump; the storage liquid circulation pipeline includes a dilute solution discharge pipeline and a concentrated solution circulation pipeline, The dilute solution discharge pipeline includes a second pump and a first liquid storage tank, the concentrated solution circulation pipeline includes a second liquid storage tank and a first pump; the solution regeneration pipeline includes a first expansion valve, a water eliminator, a first liquid storage tank tank and third pump. The utility model not only reduces the exhaust temperature of the compressor, but also realizes three operation modes of heating + icing and dehydration + deicing, etc., so as to ensure the continuous operation of heating and the regeneration effect of the solution, the floor space and the investment cost. It is lower, easy to operate, saves the consumption of heat energy, and improves the energy efficiency of the frost-free air source heat pump system.

Description

Frost-free air source heat pump for air supply and enthalpy increase for solution water removal

technical field

The utility model belongs to the technical field of heat pumps, in particular to a frost-free air source air-supplying and enthalpy-increasing heat pump for solution dewatering based on freezing and dewatering for solution regeneration.

Background technique

With the gradual maturity of heat pump technology, frost-free air source heat pump cycle has been well applied in South China and Southwest my country, especially in some commercial application fields, there are many related projects, but the scope of application is restricted by environmental factors: When the ambient temperature is too low, the unit will have insufficient heating capacity, decreased performance coefficient, and excessive exhaust temperature. Therefore, the technology of supplementing gas and increasing enthalpy came into being. The frost-free air source heat pump system using the supplementary air enthalpy technology not only reduces the exhaust temperature of the compressor but also increases the heating capacity of the heat pump unit.

However, in the specific implementation of this technology, there are still a series of problems that need to be solved: such as economic considerations, matching of supplementary air throttling elements, regeneration of concentrated solutions, etc. Among them, the regeneration of concentrated solution has attracted much attention in the "energy-saving era". When the frost-free air source air supply and enthalpy heat pump cycle is running for heating in winter, because there is a certain amount of water in the air in winter, during the heat exchange process of the antifreeze circulation and the air, the water in the air is continuously dissolved after being cooled. The antifreeze is diluted in the antifreeze. In order to separate and remove the moisture in the antifreeze, the existing technology adopts various forms of heating and drying methods such as electric heating, fuel boiler heating or solar heating. The heating methods all lead to the problems of increased energy consumption, increased investment and increased operating costs of the system.

The existing patent proposes to use the freezing regeneration method to remove the moisture in the antifreeze solution, and the regeneration effect is better, but the heating operation needs to be stopped during the regeneration process, or an independent heat pump unit needs to be used to provide cooling capacity for the solution regeneration, so as to ensure the user For the normal operation of the side units, the two units not only increase the floor space and investment cost, but also bring great inconvenience to the adjustment of the system, making it difficult to apply to practical occasions.

Utility model content

In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a frost-free air source air-supplying and enthalpy-increasing heat pump with high efficiency, low energy consumption and good energy-saving performance for water removal by solution.

In order to achieve the above-mentioned purpose of the invention, the utility model adopts the following technical solutions:

The frost-free air source heat pump for dehydration of solution includes air supply and enthalpy increase heating cycle and icing and water removal cycle; air supply and enthalpy heating cycle includes compressor, condenser, first stop valve, economizer, The first expansion valve, the second expansion valve, the first evaporator and the second evaporator; the icing and dewatering cycle includes a solution heat exchange pipeline, a storage liquid circulation pipeline and a solution regeneration pipeline, wherein the solution heat exchange pipeline includes The first evaporator, the heat exchange tower, the second cut-off valve and the first pump, the solution in the heat exchange tower is sent to the first evaporator through the second cut-off valve and the first pump, and is exchanged with the refrigerant in the first evaporator. After heating, it returns to the top of the heat exchange tower; the storage liquid circulation pipeline includes a dilute solution discharge pipeline and a concentrated solution circulation pipeline, and the dilute solution discharge pipeline includes a second pump and a first liquid storage tank. The dilute solution at the bottom of the heat exchange tower It is discharged into the first liquid storage tank through the second pump; the concentrated solution circulation pipeline includes the second liquid storage tank and the first pump, and the concentrated solution in the second liquid storage tank is transported to the first liquid storage tank through the sixth stop valve and the first pump. an evaporator;

The solution regeneration pipeline includes a first expansion valve, a water eliminator, a first liquid storage tank and a third pump. Part of the refrigerant flowing out of the first expansion valve flows to the second inlet of the water eliminator through the third shut-off valve. The second outlet of the water device is connected to the compressor; the dilute solution outlet of the first liquid storage tank is connected to the first inlet of the water eliminator through the seventh stop valve, and the first outlet of the water eliminator is connected to the inlet of the third pump; the third The outlet of the pump is respectively connected to the concentrated solution inlet of the first liquid storage tank through the fourth cut-off valve, and is connected to the concentrated solution inlet of the second liquid storage tank through the fifth cut-off valve.

As one of the preferred solutions of the present invention, it also includes a de-icing cycle. The de-icing cycle includes an eighth cut-off valve and a water eliminator. The eighth cut-off valve is connected in parallel with the first cut-off valve. The refrigerant outlet of the condenser passes through the eighth cut-off valve. The valve is communicated to the third inlet of the water eliminator, and the third outlet of the water eliminator is communicated to the inlet of the first throttle valve.

As one of the preferred solutions of the present invention, it includes a normal heating mode, a heating + freezing and dewatering mode, and a heating + deicing mode.

As one of the preferred solutions of the present invention, in the heating + icing and dewatering mode, when the solution at the first outlet of the water eliminator does not meet the requirements, the solution is transported to the first outlet through the third pump and the fourth stop valve. A liquid storage tank; when the solution at the first outlet of the water eliminator meets the requirements, the solution is transported to the second liquid storage tank through the third pump and the fifth shut-off valve, and the concentrated solution in the second liquid storage tank is passed through the first pump. sent to the first evaporator.

As one of the preferred solutions of the present invention, the heat exchange tower includes a solution tank and a heat exchange cavity located above the solution tank, and the solution at the top of the heat exchange tower flows into the solution tank after heat exchange with air in the heat exchange cavity. .

As one of the preferred solutions of the present invention, the top of the heat exchange tower is coupled with the second evaporator, and the fan of the second evaporator is arranged in the heat exchange tower.

As one of the preferred solutions of the present invention, the water eliminator includes an icing chamber, a partition and a liquid storage chamber arranged from top to bottom. Heat pipe, the solution nozzle is located on the front side of the ice making tray, and sprays the solution onto the surface of the ice making tray; Water and solutions enter the reservoir through holes in the separator.

As one of the preferred solutions of the present invention, the ice making tray is also provided with a de-icing heat exchange tube on the back side, and an ice discharge port is arranged on the bottom side of the freezing chamber, and the ice cubes are heated by the refrigerant in the de-icing heat exchange tube. After that, it falls off the surface of the ice tray and is discharged through the ice discharge port.

As one of the preferred solutions of the present invention, the partition plate is inclined downward toward the ice discharge port.

As one of the preferred solutions of the present invention, the front side of the ice making tray is provided with a plurality of ice making grooves.

Compared with the prior art, the utility model has the beneficial effects that: compared with the traditional frost-free air source air supply and enthalpy increasing heat pump, the utility model not only reduces the exhaust temperature of the compressor, but also realizes heating + icing and de-icing. The three operating modes, such as water + deicing, can not only ensure the continuous operation of heating and the regeneration effect of the solution, but also use the waste heat of the refrigerant to maintain the water removal effect of the water eliminator. The floor space and investment cost are low, and the operation Simple, saves the consumption of heat energy, and improves the energy efficiency of the frost-free air source heat pump system.

Description of drawings

1 is a schematic diagram of the composition of the heat pump of the present invention;

Fig. 2 is the structural representation of the water eliminator in the heat pump of the present invention;

Fig. 3 is the schematic flow chart of the heat pump of the present invention in the ordinary heating mode;

Figure 4-1 is a schematic diagram of the first stage of the heat pump of the present invention in the heating + freezing and water removal mode;

4-2 is a schematic diagram of the second stage of the heat pump of the present invention under the heating + freezing and dewatering mode;

4-3 is a schematic diagram of the third stage of the heat pump of the present invention under the heating + freezing and water removal mode;

FIG. 5 is a schematic flow chart of the heat pump according to the present invention in the heating + deicing mode.

In the figure, 1-condenser, 2-compressor, 3-second evaporator, 4-first evaporator, 5-first expansion valve, 6-second expansion valve, 7-economizer, 8-heat exchange Tower, 9-first pump, 10-second pump, 11-third pump, 12-first liquid storage tank, 13-second liquid storage tank, 14-fan, 15-water eliminator; 21-first Globe valve, 22-second globe valve, 23-third globe valve; 24-fourth globe valve, 25-fifth globe valve, 26-sixth globe valve, 27-seventh globe valve, 28-eighth globe valve valve;

a- the first inlet of the water eliminator, b- the first outlet of the water eliminator, c- the second inlet of the water eliminator, d- the second outlet of the water eliminator, e- the third inlet of the water eliminator, f - the third outlet of the water eliminator;

A-ice outlet, B-partition, C-liquid storage chamber, D-ice tray, E-solution nozzle, F-heat exchange tube.

Detailed ways

The technical solutions of the present invention will be further explained below.

As shown in FIG. 1 , the frost-free air source heat pump for dewatering by solution described in the present embodiment includes the air-increasing and enthalpy heating cycle and the freezing and water-removing cycle; the air-increasing and enthalpy heating cycle includes a compressor 2 , condenser 1, first shut-off valve 21, economizer 7, first expansion valve 5, second expansion valve 6, first evaporator 4 and second evaporator 3; condenser 1 provides heat for the user side, and the first The evaporator 4 absorbs the heat of the solution, and the second evaporator 3 exchanges heat with the air in the heat exchange tower 8 to avoid frost on the surface of the second evaporator 3 .

The icing and dewatering cycle includes a solution heat exchange pipeline, a storage liquid cycle pipeline and a solution regeneration pipeline, wherein the solution heat exchange pipeline includes a first evaporator 4, a heat exchange tower 8, a second shut-off valve 22 and a first pump 9. The solution in the heat exchange tower 8 is sent to the first evaporator 4 through the second shut-off valve 22 and the first pump 9, and is returned to the top of the heat exchange tower 8 after exchanging heat with the refrigerant in the first evaporator 4; storage The liquid circulation pipeline includes a dilute solution discharge pipeline and a concentrated solution circulation pipeline. The dilute solution discharge pipeline includes a second pump 10 and a first liquid storage tank 12. The dilute solution at the bottom of the heat exchange tower 8 is discharged through the second pump 10 to Inside the first liquid storage tank 12; the concentrated solution circulation pipeline includes the second liquid storage tank 13 and the first pump 9, and the concentrated solution in the second liquid storage tank 13 is transported to the second liquid storage tank 13 through the sixth stop valve 26 and the first pump 9. An evaporator 4; the solution regeneration pipeline includes a first expansion valve 5, a water eliminator 15, a first liquid storage tank 12 and a third pump 10, and part of the refrigerant flowing out from the first expansion valve 5 passes through the third stop valve 23 Flow to the second inlet c of the water eliminator 15, and the second outlet d of the water eliminator 15 is connected to the compressor 2; An inlet a, the first outlet b of the water eliminator 15 is connected to the inlet of the third pump 11; the outlets of the third pump 11 are respectively connected to the concentrated solution inlet of the first liquid storage tank 12 through the fourth cut-off valve 24, and the fifth cut-off valve The valve 25 communicates with the concentrated solution inlet of the second liquid storage tank 13 .

The frost-free air source heat pump for dehydration of the solution described in this example uses part of the cooling energy of the air replenishment and enthalpy heating cycle to freeze and dewater part of the solution introduced into the water eliminator, and combine with the liquid storage tank It can not only ensure the continuous operation of the heating cycle, but also improve the regeneration effect and improve the operating efficiency of the frost-free air source heat pump.

The frost-free air source enthalpy-enhancing heat pump in this embodiment also includes a de-icing cycle. The de-icing cycle includes an eighth cut-off valve 28 and a water eliminator 15. The eighth cut-off valve 28 is connected in parallel with the first cut-off valve 21, and the condenser The refrigerant outlet of 1 is connected to the third inlet e of the water eliminator 15 through the eighth shut-off valve 28 , and the third outlet f of the water eliminator 15 is connected to the inlet of the first expansion valve 5 . When the water eliminator runs for a certain period of time, the amount of icing increases gradually. In order to ensure the water removal effect of the water eliminator, part of the heat of the heating cycle of supplementing air and increasing enthalpy is used to heat and de-icing. The heating is fast and the structure is simple.

The heat exchange tower 8 used in this embodiment includes a solution tank and a heat exchange cavity above the solution tank. The solution at the top of the heat exchange tower flows into the solution tank after contacting with air in the heat exchange cavity for heat exchange. Preferably, the solution at the top of the heat exchange tower is directly contacted with the air after being sprayed by the spray device to increase the contact area. Since the temperature of the solution after heat exchange is lower than the temperature of the air, the moisture in the air is continuously dissolved after being cooled. In the solution, the concentration of the solution is gradually reduced, so when the solution in the solution tank is circulated for a period of time, the solution must be regenerated to maintain the continuous heating effect. Preferably, the heat exchange tower 8 in this embodiment is coupled with the second evaporator 3, and the fan 14 of the second evaporator is set in the top of the heat exchange tower. Since the moisture in the air is continuously removed, the second evaporator The heat exchange between the evaporator 3 and the dehydrated air can ensure the heat exchange effect of the second evaporator 3 and prevent the surface of the second evaporator 3 from frosting.

As shown in FIG. 2 , the water eliminator 15 used in this embodiment includes an icing chamber, a partition B and a liquid storage chamber C arranged from top to bottom. The heat exchange tube F on the back of the pan, the heat exchange tube F includes the icing heat exchange tube and the deicing heat exchange tube arranged in parallel, and the two ends of the icing heat exchange tube are the second inlet c and the second outlet of the water eliminator respectively. d, the two ends of the de-icing heat exchange tube are respectively connected to the third inlet e and the third outlet f of the water eliminator.

The solution nozzle E is arranged on the front side of the ice making tray D, and the inlet of the solution nozzle E is connected to the first inlet a of the water eliminator, that is, the solution enters the freezing chamber from the a port, and is sprayed to the ice tray D through the solution nozzle E. surface; after the solution exchanges heat with the refrigerant in the frozen heat exchange tube, the ice cubes are attached to the grooves on the surface of the cooling disk D, and the unfrozen water and solution enter the liquid storage chamber C through the holes on the partition B, The bottom of the liquid storage chamber C is provided with a first outlet b, and the regenerated solution flows out into the solution tank of the heat exchange tower 8 through the first outlet b.

In this embodiment, a row of ice openings A is set on the bottom side of the freezing chamber. When the amount of ice in the water eliminator is large, the ice cubes are heated by the refrigerant in the deicing heat exchange tube, and the ice cubes are removed from the ice making tray. The surface falls off and is discharged through the ice discharge port A. The ice discharge port A can be opened or closed manually or automatically to prevent the unfrozen solution from flowing out of the ice discharge port. At the same time, in order to better discharge the ice cubes, the partition B is inclined downward toward the ice discharge port A, so as to increase the time period for the ice cubes to be discharged.

The frost-free air source air supply and enthalpy-increasing heat pump for dewatering solution of the utility model can realize three operation modes, the ordinary heating mode, the heating + icing and dewatering mode, and the heating + deicing mode. The specific process is as follows:

As shown in FIG. 3 , in the normal heating mode, the first shut-off valve 21 , the first expansion valve 5 and the second expansion valve 6 , the second shut-off valve 22 and the first pump 9 are opened. After the refrigerant is discharged from the compressor 2, it returns to the condenser 1, the first stop valve 21, the second expansion valve 6 or the economizer 7, the first expansion valve 5, the first evaporator 4 and the second evaporator 3 in sequence. Compressor 2; the solution is transported to the first evaporator 4 by the first pump 9 through the bottom of the heat exchange tower 8, and returned to the top of the heat exchange tower 8 after heat exchange. In this mode, the condenser 1 provides heat for the user side, and the refrigerant in the first evaporator 4 continuously absorbs the heat of the solution to maintain the heating load.

As shown in Figure 4-1 to Figure 4-3, in the heating + icing and dewatering mode, the ordinary heating operates normally. After a period of circulation, the concentration of the solution flowing from the second outlet of the evaporator gradually decreases. , the model has gone through three stages:

The first stage, as shown in Figure 4-1, is the circulation of the stored liquid in the second liquid storage tank: the second pump 10 is turned on, the dilute solution in the heat exchange tower 8 enters the first liquid storage tank 12, and the heat exchange tower 8 When the dilute solution in the tank will run out, open the sixth cut-off valve 26, close the second cut-off valve 22 and the second pump 10, and the concentrated solution in the second liquid storage tank 13 enters through the sixth cut-off valve 26 and the first pump 9. The first evaporator 4 exchanges heat with the refrigerant and enters the heat exchange tower 8. After the concentrated solution in the second liquid storage tank 13 is exhausted, the sixth stop valve 26 is closed and the second stop valve 22 is opened to maintain the solution. normal cycle.

The second stage, as shown in Figure 4-2, is the solution regeneration cycle: open the third shut-off valve 23, the seventh shut-off valve 27, the third pump 11 and the fourth shut-off valve 24. The dilute solution in the first liquid storage tank 12 enters the water eliminator 15 through the seventh shut-off valve 27 . Part of the refrigerant flowing out from the first expansion valve 5 enters the second inlet of the water eliminator 15, and the solution flowing into the water eliminator 15 is sprayed by the solution nozzle E onto the ice-making tray D with grooves in the water eliminator. There is a difference in the concentration of refrigerant flowing into the water eliminator and the evaporator, so the water in the solution sprayed on the ice tray freezes (while the solution in the evaporator does not freeze), and the second expansion valve can also be adjusted. 6. Change the temperature and pressure of the refrigerant passing through the water eliminator 18 to make the freezing process better, and the unfrozen water and antifreeze in the water eliminator 15 become a concentrated solution, passing through the partition B in the water eliminator The upper hole flows into the liquid storage chamber C, flows out along the first outlet b of the water eliminator 15 , and returns to the first liquid storage tank 12 through the third pump 11 and the fourth shut-off valve 24 . The solution circulates in this way, the concentration gradually increases, and the water continues to freeze into ice.

Stage three is shown in Figure 4-3. When the solution flowing out of the first outlet b of the water eliminator 15 reaches the concentration requirement, the fourth stop valve 24 is closed, and the fifth stop valve 25 is opened. The fifth stop valve 25 enters the second storage tank 11 , and when the second storage tank 11 is filled with the concentrated solution, the sixth stop valve 26 is opened, so that the concentrated solution enters the solution circulation pipeline. When the solution concentration meets the requirements, the solution regeneration circulation pipeline and the sixth shut-off valve can be closed to maintain the solution circulation in the normal heating mode.

As shown in FIG. 5 , in the heating + deicing mode, the normal heating operates normally, and the first shut-off valve 21 , the third shut-off valve 23 to the seventh shut-off valve 27 , the second pump 10 and the third pump 11 are closed; The eighth stop valve 28 . The hot refrigerant coming out of the condenser 1 flows into the third inlet c of the water eliminator 15 through the eighth shut-off valve 28, and exchanges heat with the ice making tray in the water eliminator. Due to the heating of the refrigeration tray, the surface adhered to the The ice cubes will fall off, and the falling ice cubes will flow out through the ice discharge port A.

Compared with the traditional frost-free air source air supply and enthalpy increase heat pump, the utility model not only reduces the exhaust temperature of the compressor, but also realizes three operation modes such as heating + icing and water removal + de-icing, which can not only ensure the The continuous operation of heat and the regeneration effect of the solution can also use the refrigerant waste heat to maintain the water removal effect of the water eliminator. The floor space and investment cost are low, the operation is simple, the consumption of heat energy is saved, and the frost-free air source is improved. Energy efficiency of heat pump systems.

It should be noted that the above embodiments can be freely combined as required. The above only describes the preferred embodiments and principles of the present invention in detail. For those of ordinary skill in the art, according to the idea provided by the present invention, there will be changes in the specific implementation, and these changes will It should also be regarded as the protection scope of the present invention.

Claims (10)

1. The frost-free air source air-supplying and enthalpy-increasing heat pump of solution dewatering is characterized in that, comprises the air-increasing enthalpy heating cycle and the freezing and dewatering cycle; shut-off valve, economizer, first expansion valve, second expansion valve, first evaporator and second evaporator; The icing and dewatering cycle includes a solution heat exchange pipeline, a storage solution circulation pipeline and a solution regeneration pipeline, wherein, The solution heat exchange pipeline includes a first evaporator, a heat exchange tower, a second cut-off valve and a first pump. The solution in the heat exchange tower is sent to the first evaporator through the second cut-off valve and the first pump. After exchanging heat with the refrigerant, it returns to the top of the heat exchange tower; The storage liquid circulation pipeline includes a dilute solution discharge pipeline and a concentrated solution circulation pipeline, the dilute solution discharge pipeline includes a second pump and a first liquid storage tank, and the diluted solution at the bottom of the heat exchange tower is discharged to the first storage tank through the second pump. in the liquid tank; the concentrated solution circulation pipeline includes a second liquid storage tank and a first pump, and the concentrated solution in the second liquid storage tank is transported to the first evaporator through the sixth shut-off valve and the first pump; The solution regeneration pipeline includes a first expansion valve, a water eliminator, a first liquid storage tank and a third pump. Part of the refrigerant flowing out of the first expansion valve flows to the second inlet of the water eliminator through the third shut-off valve. The second outlet of the water device is connected to the compressor; the dilute solution outlet of the first liquid storage tank is connected to the first inlet of the water eliminator through the seventh stop valve, and the first outlet of the water eliminator is connected to the inlet of the third pump; the third The outlet of the pump is respectively connected to the concentrated solution inlet of the first liquid storage tank through the fourth cut-off valve, and is connected to the concentrated solution inlet of the second liquid storage tank through the fifth cut-off valve. 2. The frost-free air source air-supplying and enthalpy-increasing heat pump of solution dewatering according to claim 1, is characterized in that, also comprises deicing cycle, deicing cycle comprises the eighth stop valve and water eliminator, and the eighth stop valve and The first shut-off valves are connected in parallel, the refrigerant outlet of the condenser is connected to the third inlet of the water eliminator through the eighth shut-off valve, and the third outlet of the water eliminator is communicated to the inlet of the first throttle valve. 3. The frost-free air source air-supplying and enthalpy-increasing heat pump for dewatering solution according to claim 2, is characterized in that, it comprises a normal heating mode, a heating+freezing water mode and a heating+deicing mode. 4. the frost-free air source air supply and enthalpy-increasing heat pump of the solution dewatering according to claim 3, is characterized in that, under the described heating+icing dewatering mode, when the solution of the first outlet of the water eliminator does not meet the requirement When the solution is delivered to the first liquid storage tank through the third pump and the fourth stop valve; when the solution at the first outlet of the water eliminator meets the requirements, the solution is delivered to the second storage tank through the third pump and the fifth stop valve Liquid tank, the concentrated solution in the second liquid storage tank is transported to the first evaporator through the first pump. 5. The frost-free air source air supply and enthalpy-increasing heat pump of the solution dewatering according to claim 4 is characterized in that, the heat exchange tower comprises a solution tank and a heat exchange cavity positioned above the solution tank, and the solution at the top of the heat exchange tower is at the top of the solution tank. After the heat exchange cavity is in contact with the air for heat exchange, it flows into the solution tank. 6. The frost-free air source air-supplying and enthalpy-increasing heat pump for dewatering solution according to claim 5, wherein the top of the heat exchange tower is coupled with the second evaporator, and the fan of the second evaporator is located in the heat exchange inside the tower. 7. The frost-free air source air-supplying and enthalpy-increasing heat pump for dewatering solution according to claim 4, is characterized in that, the water eliminator comprises an icing chamber, a partition plate and a liquid storage chamber arranged from top to bottom, and the icing chamber is There is an ice making tray and an icing heat exchange tube arranged on the back of the ice making tray, and the solution nozzle is arranged on the front side of the ice making tray to spray the solution onto the surface of the ice making tray; the refrigerant in the solution and the icing heat exchange tube After heat exchange, the ice cubes are attached to the surface of the refrigerating plate, and the unfrozen water and solution enter the liquid storage chamber through the holes on the separator. 8. The frost-free air source air-supplying and enthalpy-increasing heat pump for dewatering the solution according to claim 7, is characterized in that, the back side of the ice making tray is also provided with a deicing heat exchange pipe, and the bottom side of the freezing chamber is provided with a drain. Ice port, after the ice cubes are heated by the refrigerant in the de-icing heat exchange tube, they fall off the surface of the ice making tray and are discharged through the ice discharge port. 9 . The frost-free air source air supply and enthalpy-increasing heat pump for dewatering solution according to claim 8 , wherein the partition plate is inclined downward toward the ice discharge port. 10 . 10 . The frost-free air source air supply and enthalpy-increasing heat pump for removing water from a solution according to claim 9 , wherein a plurality of ice-making grooves are provided on the front of the ice-making tray. 11 .

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