Solution deicing dehydrator and frost-free air source heat pump using the same

Abstract

The present invention provides a solution ice dewatering device and a frost-free air source heat pump using the same. The solution ice dewatering device comprises a shell and an ice-making part, an ice storage chamber, a solution collector and a liquid storage chamber located in the shell; the top of the solution collector is isolated from the ice storage chamber by a partition, and the bottom of the solution collector is connected to the liquid storage chamber; the ice-making part is arranged on the top of the solution collector, and the ice-making part comprises an ice-making tray and a freezing plate arranged opposite to each other, one end of the ice-making tray is hinged to one side of the shell, and one end of the freezing plate is connected to a driving device; an ice-making heat exchange pipe and an ice-removing heat exchange pipe are attached to the side of the freezing plate facing away from the ice-making tray, a plurality of cold fingers are fixed to the side of the freezing plate facing the ice-making tray, a plurality of ice-making grooves are correspondingly arranged on the surface of the ice-making tray, and a solution pipe is arranged on one side of the surface of the ice-making tray. The dewatering device of the present invention has a good dewatering effect, can obtain a concentrated solution with a high concentration, has a simple structure, and is easy to operate; the heat pump using the dewatering device has high efficiency, low energy consumption, and excellent energy-saving performance.

Description

Technical Field

[0001] The invention belongs to the technical field of heat pumps, and in particular relates to a solution deicing and water removal device and a frost-free air source heat pump using the same. Background Art

[0002] With the continuous progress of human society, people's requirements for energy conservation and environmental protection are constantly increasing. As an energy-saving device that uses high-level energy to make heat flow from low-level heat source air to high-level heat source, air source heat pump has great development advantages, especially frost-free air source heat pump technology. However, frost-free air source heat pump consumes a lot of heat energy every year in the regeneration of concentrated antifreeze solution. This shortcoming will undoubtedly be the biggest barrier to its development. Therefore, further improving frost-free air source heat pump technology is a hot topic today.

[0003] As a new type of system, the frost-free air source heat pump cycle has the advantages of wide applicability and stable operation. What is better than other new energy systems is that it has a very outstanding energy-saving effect. However, there are still many areas that need to be improved in the frost-free air source heat pump, including the problem of water removal in the recycling of its antifreeze solution. Therefore, solving this problem has become an urgent matter for the industry. When the solution-type frost-free air source heat pump cycle is running in winter heating, since the air contains a certain amount of moisture in winter, during the heat exchange process of the antifreeze circulation and air contact, the moisture in the air is continuously dissolved in the antifreeze after being cooled, making the concentration of the antifreeze gradually lower. The existing technology uses a variety of heating and drying methods such as electric heating, fuel boiler heating or solar heating to separate and remove moisture from the antifreeze, thereby achieving the purpose of regenerating concentrated antifreeze, but the above-mentioned heating methods may lead to increased energy consumption of system operation, increased investment and increased operating costs.

[0004] The existing patent proposes to use freezing regeneration to remove moisture from antifreeze, which has a better regeneration effect. However, during the regeneration process, an independent heat pump unit needs to be used to provide coldness for solution regeneration to ensure the normal operation of the user-side unit. The two sets of 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 actual occasions. At the same time, in the existing freezing regenerator, solution regeneration, solution circulation and ice preparation are all in one container, and ice cubes are easily mixed with concentrated solutions and dilute solutions. The structure is relatively complex and difficult to control, and a relatively ideal concentrated solution cannot be obtained. Summary of the invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a solution deicing and water removal device and a frost-free air source heat pump using the same, which has high efficiency, low energy consumption and excellent energy-saving performance.

[0006] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0007] The solution ice dehydrator comprises a shell and an ice-making part, an ice storage chamber, a solution collector and a liquid storage chamber located inside the shell; the ice storage chamber and the solution collector are arranged side by side, the top of the solution collector is isolated from the ice storage chamber by a partition, and the bottom of the solution collector is connected to the liquid storage chamber; the ice-making part is arranged on the top of the solution collector, and the ice-making part comprises an ice-making tray and a freezing plate arranged oppositely, one end of the ice-making tray is hinged to one side of the shell, and the ice-making tray can rotate up and down around the hinge; one end of the freezing plate is connected to the driving device, and the other end extends horizontally; the freezing plate is back to An ice-making heat exchange tube and an ice-removing heat exchange tube are attached to one side of the ice-making tray, a plurality of cold fingers are fixedly arranged on the side of the freezing plate facing the ice-making tray, a plurality of ice-making grooves are correspondingly arranged on the surface of the ice-making tray, and a solution tube is arranged on one side of the surface of the ice-making tray; when making ice, the ice-making tray is arranged horizontally, and the plurality of cold fingers are located in the corresponding ice-making grooves; after a certain period of time, the ice-making tray rotates downward, and the unfrozen solution in the ice-making tray flows into the solution collector; when removing ice, the ice-making tray is arranged vertically, and the driving device drives the freezing plate to move to the top of the ice storage chamber, and the melted ice cubes fall into the ice storage chamber.

[0008] As one of the preferred schemes of the present invention, the shell includes a first inlet for a dilute solution to flow in, a first outlet for a concentrated solution to flow out, a second inlet for an iced refrigerant to flow in, a second outlet for an iced refrigerant to flow out, a third inlet for a de-iced refrigerant to flow in, and a third outlet for an de-iced refrigerant to flow out; the first inlet is arranged at the inlet end of the solution pipe, and the first outlet is arranged at the bottom of the liquid storage tank; the second inlet, the second outlet, the third inlet and the fourth outlet are all arranged on one side of the top of the shell, wherein the second inlet and the second outlet are respectively the two ends of the iced heat exchange tube, and the third inlet and the third outlet are respectively the two ends of the de-icing heat exchange tube.

[0009] As one of the preferred solutions of the present invention, an ice discharge port is provided on one side of the bottom of the ice storage chamber, and a conveyor belt is provided at the bottom of the ice storage chamber, and the ice cubes flow out of the shell along the conveyor belt and the ice discharge port; or, the bottom of the ice storage chamber is a bottom plate inclined toward the ice discharge port, and the ice cubes flow out of the shell along the bottom plate and the ice discharge port.

[0010] As one of the preferred solutions of the present invention, a controller is further included. The hinge of the ice tray is connected to a motor, which drives the ice tray to rotate up and down. The motor and the driving device are both electrically connected to the controller.

[0011] As one of the preferred solutions of the present invention, the ice-making groove of the ice-making tray is in a trapezoidal shape, and when the ice-making tray is arranged horizontally, the motor can also drive the ice-making tray to swing.

[0012] The present invention also provides a frost-free air source heat pump, which adopts the solution deicing and dehydrating device, including a heating cycle and an deicing and dehydrating cycle, wherein the heating cycle includes a compressor, a condenser, a first stop valve, a first throttle valve and an evaporator; the deicing and dehydrating cycle includes a solution heat exchange pipeline and a solution regeneration pipeline, wherein the solution heat exchange pipeline includes an evaporator, a heat exchange tower and a first pump, the solution in the heat exchange tower is sent to the evaporator through the first pump, and returns to the top of the heat exchange tower after heat exchange with the refrigerant in the evaporator; the solution regeneration pipeline It includes an evaporator, a solution ice dehydrator, a second pump and a heat exchange tower. Part of the refrigerant flowing out of the first throttle valve flows to the second inlet of the solution ice dehydrator through the third throttle valve, and the second outlet of the solution ice dehydrator is connected to the compressor; part of the solution after heat exchange with the refrigerant in the evaporator flows to the first inlet of the dehydrator through the second stop valve, and after the part of the solution exchanges heat with the refrigerant in the solution ice dehydrator and is iced and dehydrated, it flows out from the first outlet of the solution ice dehydrator and is transported to the heat exchange tower through the second pump.

[0013] As one of the preferred schemes of the present invention, it also includes a deicing cycle, which includes a fifth stop valve and a dehydrator. The fifth stop valve is connected in parallel with the first stop valve. The refrigerant outlet of the condenser is connected to the third inlet of the solution deicing dehydrator through the fifth stop valve, and the third outlet of the solution deicing dehydrator is connected to the inlet of the first throttle valve.

[0014] As one of the preferred schemes of the present invention, it includes ordinary heating mode, heating + deicing and water removal mode and heating + deicing mode. In the ordinary heating mode and heating + deicing mode, the evaporator is connected to the compressor through the fourth stop valve; in the heating + deicing and water removal mode, the evaporator is connected to the compressor through the fourth throttle valve.

[0015] 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. The solution at the top of the heat exchange tower contacts and exchanges heat with air in the heat exchange cavity and then flows into the solution tank.

[0016] As one of the preferred solutions of the present invention, the heating cycle is a single-stage compression heating cycle or a two-stage compression heating cycle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Compared with the traditional deicing and dehydrating device, the solution deicing and dehydrating device of the present invention isolates the ice storage chamber from the solution collector. When making ice, the freezing plate and the ice tray are arranged above the solution collector. The solution in the ice tray contacts the cold finger of the freezing plate for refrigeration. The ice tray rotates downward to drop the unfrozen concentrated solution into the solution collector. When removing ice, the freezing plate is moved to the top of the ice storage chamber, and the ice cubes fall into the ice storage chamber, so that the melted ice cubes are separated from the solution, and the concentration of the solution in the solution collector is ensured. The structure is simple and easy to operate. When the ice cubes are large enough and sufficient, they can also be discharged through the ice discharge port to ensure the normal operation of the deicing and dehydrating device.

[0019] Compared with traditional frost-free air source heat pumps, the present invention uses one set of heat pump units to achieve three operating modes: heating + deicing + ice removal. It 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 dehydration effect of the dehydrator. It has a low footprint and investment cost, is easy to operate, saves heat energy consumption, and improves the energy efficiency of the frost-free air source heat pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the solution deicing and water removal device of the present invention when making ice;

[0021] Figure 2 It is a schematic diagram of the structure of the solution deicing and water removal device of the present invention when releasing concentrated solution;

[0022] Figure 3 It is a schematic diagram of the structure of the solution deicing device of the present invention during deicing;

[0023] Figure 4 It is a schematic diagram of the composition of the frost-free air source heat pump of the present invention;

[0024] Figure 5 It is a schematic diagram of the flow of the frost-free air source heat pump in the ordinary heating mode of the present invention;

[0025] Figure 6 It is a schematic diagram of the flow of the frost-free air source heat pump in the heating + freezing and dehydration mode of the present invention;

[0026] Figure 7 It is a schematic diagram of the flow of the frost-free air source heat pump in the heating + deicing mode of the present invention.

[0027] In the figure, 1-condenser, 2-high-pressure compressor, 3-low-pressure compressor, 4-evaporator, 5-first throttle valve, 6-second throttle valve, 7-gas-liquid separator, 8-heat exchange tower, 9-first pump, 11-liquid storage tank, 12-second pump, 18-solution deicing and water removal device; 19-third stop valve, 20-fifth stop valve, 21-first stop valve, 23-third throttle valve, 24-second stop valve, 25-fourth throttle valve, 26-fourth stop valve;

[0028] a-a first inlet of the solution de-icing water separator, b-a first outlet of the solution de-icing water separator, c-a second inlet of the solution de-icing water separator, d-a second outlet of the solution de-icing water separator, e-a third inlet of the solution de-icing water separator, f-a third outlet of the solution de-icing water separator;

[0029] A- ice discharge port, B- cold finger, C- liquid storage chamber, D- ice tray, E- solution collector, F- freezing plate, G- conveyor belt, H- ice storage chamber, K- driving device. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be further explained below. The heating cycle used in the present invention is not limited to the two-stage compression heating cycle described in the following embodiments, and can also be a single-stage compression heating cycle or a self-cascade heat pump cycle.

[0031] Example 1

[0032] like Figure 1 As shown, the solution ice dehydrator of this embodiment includes a shell and an ice-making part, an ice storage chamber H, a solution collector E and a liquid storage chamber C located in the shell; the ice storage chamber H and the solution collector E are arranged side by side, the top of the solution collector E is isolated from the ice storage chamber H by a partition, and the bottom of the solution collector E is connected to the liquid storage chamber C; the ice-making part is arranged on the top of the solution collector E, and the ice-making part includes an ice-making tray D and a freezing plate F arranged oppositely, one end of the ice-making tray F is hinged to one side of the shell, and the ice-making tray F can rotate up and down around the hinge; one end of the freezing plate F It is connected to the driving device K, and the other end extends horizontally; an ice-making heat exchange pipe and an ice-removing heat exchange pipe are attached to the side of the freezing plate F facing away from the ice-making tray D, and a plurality of cold fingers B are fixedly arranged on the side of the freezing plate F facing the ice-making tray D. A plurality of ice-making grooves are correspondingly arranged on the surface of the ice-making tray D, and the ice-making grooves are designed to be trapezoidal. A solution pipe is arranged on one side of the surface of the ice-making tray D; a dilute solution enters the ice-making grooves on the surface of the ice-making tray D from the solution pipe. When the solution fills one ice-making groove, it overflows to the adjacent ice-making groove, so that all the ice-making grooves are filled successively through crossing.

[0033] The ice storage chamber of the present embodiment has an ice discharge port A at one side of the bottom, a conveyor belt D at the bottom of the ice storage chamber, and ice cubes flow out of the housing along the conveyor belt D and the ice discharge port A. Optionally, the bottom of the ice storage chamber is a bottom plate inclined toward the ice discharge port, and ice cubes flow out of the housing along the bottom plate and the ice discharge port.

[0034] The shell described in this embodiment includes a first inlet a for a dilute solution to flow in, a first outlet b for a concentrated solution to flow out, a second inlet c for an iced refrigerant to flow in, a second outlet d for an iced refrigerant to flow out, a third inlet e for a de-iced refrigerant to flow in, and a third outlet f for an de-iced refrigerant to flow out; the first inlet a is arranged at the inlet end of the solution pipe, and the first outlet b is arranged at the bottom of the liquid storage tank; the second inlet c, the second outlet d, the third inlet e and the fourth outlet f are all arranged on one side of the top of the shell, wherein the second inlet c and the second outlet d are respectively the two ends of the iced heat exchange pipe, and the third inlet e and the third outlet f are respectively the two ends of the de-icing heat exchange pipe.

[0035] The solution deicing and water removal device described in this embodiment also includes a controller. A motor is connected to the hinge of the ice tray, and the motor drives the ice tray to rotate up and down; the motor and the driving device are both electrically connected to the controller. At the same time, when the ice tray is placed horizontally, the motor can also drive the ice tray to swing slightly to improve the cooling effect of the solution.

[0036] like Figure 1 As shown, when the solution ice dehydrator of this embodiment is used for making ice, the ice tray D is horizontally arranged, a plurality of cold fingers B are located in the corresponding ice making grooves, the solution is filled in each ice making groove, the solution exchanges heat with the refrigerant in the ice heat exchange pipe, ice cubes condense near the cold fingers, and the unfrozen solution is still in the ice making groove. In this process, in order to improve the heat exchange of the solution, the motor can be operated to make the ice tray swing slightly to improve the heat exchange effect between the solution and the cold fingers.

[0037] like Figure 2 As shown, after a certain period of condensation, the ice tray D rotates downward, and the unfrozen solution in the ice tray D flows into the solution collector E, and then flows into the liquid storage chamber C for standby use. When the solution in the ice making groove is exhausted, the ice tray is rotated to a horizontal state, and new dilute solution is re-injected, and this process is repeated until the ice cubes are large enough for defrosting.

[0038] like Figure 3 As shown, when there are large and numerous ice cubes near the freezing plate and the cold fingers, hot refrigerant is filled in the de-icing heat exchange tube, the motor drives the ice tray D to be vertically arranged, the driving device K drives the freezing plate F to move to the top of the ice storage chamber H, and the melted ice cubes fall into the ice storage chamber H. When enough ice cubes fall, the conveyor belt D is turned on to send the ice cubes out of the shell to ensure sufficient ice storage space.

[0039] Compared with the traditional deicing and dehydrating device, the solution deicing and dehydrating device described in this embodiment has better dehydration effect, each space is independent of each other, ice cubes and concentrated solution are not mixed with each other, and a concentrated solution with a higher concentration can be obtained. It has a simple structure and is easy to operate.

[0040] Example 2

[0041] like Figure 4 As shown, this embodiment provides a frost-free air source heat pump, which adopts the solution deicing and dehydrating device described in Example 1, including a heating cycle and a deicing and dehydrating cycle; wherein, the heating cycle includes a high-pressure compressor 2, a low-pressure compressor 3, a condenser 1, a first stop valve 21, a first throttle valve 5, a second throttle valve 6, a gas-liquid separator 7 and an evaporator 4; the condenser 1 provides heat to the user side, the evaporator 4 absorbs the heat of the solution, and the refrigerant outlet of the evaporator 4 is connected to the compressor via a fourth throttle valve 25 or a fourth stop valve 26.

[0042] The deicing and dehydrating cycle includes a solution heat exchange pipeline and a solution regeneration pipeline, wherein the solution heat exchange pipeline includes an evaporator 4, a heat exchange tower 8 and a first pump 9, the solution in the heat exchange tower 8 is sent to the evaporator 4 through the first pump 9, and returns to the top of the heat exchange tower 8 after heat exchange with the refrigerant in the evaporator 4; the solution regeneration pipeline includes the evaporator 4, the solution deicing and dehydrating device 18, the second pump 12 and the heat exchange tower 8, part of the refrigerant flowing out of the first throttle valve 5 flows to the second inlet c of the solution deicing and dehydrating device through the third stop valve 19 and the third throttle valve 23, and the second outlet c of the solution deicing and dehydrating device is connected to the low-pressure compressor 3; part of the solution after heat exchange with the refrigerant in the evaporator 4 flows to the first inlet a of the solution deicing and dehydrating device through the second stop valve 24, and after heat exchange with the refrigerant in the solution deicing and dehydrating device 18, the part of the solution flows out from the first outlet b of the solution deicing and dehydrating device 18 and is transported to the heat exchange tower 8 through the liquid storage tank 11 and the second pump 12.

[0043] The frost-free air source heat pump described in this embodiment uses part of the cooling capacity of the heating cycle to freeze and remove water from part of the solution introduced into the dehydrator, which can not only ensure the continuous operation of the heating cycle, but also improve the regeneration effect and the operating efficiency of the frost-free air source heat pump.

[0044] The frost-free air source heat pump described in this embodiment also includes a deicing cycle, which includes a fifth stop valve 20 and a solution ice dehydrator 18. The fifth stop valve 20 is connected in parallel with the first stop valve 21. The refrigerant outlet of the condenser 1 is connected to the third inlet e of the solution ice dehydrator 18 through the fifth stop valve 20, and the third outlet f of the solution ice dehydrator 18 is connected to the inlet of the first throttle valve 6. After the solution ice dehydrator runs for a certain period of time, the amount of ice gradually increases. In order to ensure the dehydration effect of the solution ice dehydrator, part of the heat of the heating cycle is used to heat the deicing, which is faster and has a simple structure.

[0045] The heat exchange tower 8 used in this embodiment includes a solution tank and a heat exchange cavity located above the solution tank. The solution at the top of the heat exchange tower contacts and exchanges heat with the air in the heat exchange cavity and then flows into the solution tank. Preferably, the solution at the top of the heat exchange tower is directly contacted with the air after being sprayed by a 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 in the solution after being cooled, so that the concentration of the solution gradually decreases. Therefore, after the solution in the solution tank circulates for a period of time, the solution must be regenerated to maintain a continuous heating effect.

[0046] The frost-free air source heat pump of the present invention can realize three operation modes, namely, ordinary heating mode, heating + deicing mode, and heating + deicing mode. The specific process is as follows:

[0047] like Figure 5 As shown, in the common heating mode, the first stop valve 21, the first throttle valve 5, the fourth stop valve 26 and the first pump 9 are opened. After being discharged from the low-pressure compressor 3, the refrigerant passes through the gas-liquid separator 7, the high-pressure compressor 2, the condenser 1, the first stop valve 21, the first throttle valve 5, the evaporator 4 and the third stop valve 19 in sequence and then returns to the low-pressure compressor 3; the solution is transported to the evaporator 4 by the first pump 9 through the bottom of the heat exchange tower 8, and returns to the top of the heat exchange tower 8 after heat exchange. In this mode, the condenser 1 provides heat to the user side, and the refrigerant in the evaporator 4 continuously absorbs the heat of the solution to maintain the heating load.

[0048] like Figure 6As shown, in the heating + freezing and dehydration mode, ordinary heating operates normally. After a period of circulation, the concentration of the solution flowing out of the second outlet of the evaporator slowly decreases. Open the third stop valve 19, the third throttle valve 23, the second stop valve 24, and the second pump 12; close the fourth stop valve 26, and open the fourth throttle valve 25. At this time, the solution flowing out of the evaporator 4 is divided into two streams, one stream flows into the heat exchange tower 8 to exchange heat with the air to obtain heat, and the other stream enters the dehydrator 18 through the fourth stop valve 26 to regenerate by freezing and dehydration. The solution is sprayed onto the ice tray D with ice-making grooves in the dehydrator. By adjusting the third throttle valve 23, the refrigerant passing through the solution freezing and dehydration device 18 has a lower temperature and pressure. The ice tray D is horizontally arranged, and multiple cold fingers B are located in the corresponding ice-making grooves. The solution is filled in each ice-making groove. The solution exchanges heat with the refrigerant in the freezing heat exchange tube, and ice cubes condense near the cold fingers, and the unfrozen solution is still in the ice-making groove. During this process, in order to improve the heat exchange of the solution, the motor can be operated to make the ice tray swing slightly to improve the heat exchange effect between the solution and the cold finger. After a certain period of condensation, the ice tray D rotates downward, and the unfrozen solution in the ice tray D flows into the solution collector E, and then flows into the liquid storage chamber C for standby use. When the solution in the ice making groove is exhausted, the ice tray is rotated to a horizontal state, and new dilute solution is re-injected, and this reciprocating process is repeated until the ice cubes are large enough for defrosting.

[0049] like Figure 7 As shown, in the heating + deicing mode, ordinary heating operates normally, the first stop valve 21, the third stop valve 19, the third throttle valve 23, the second stop valve 24, the fourth throttle valve 25, and the second pump 12 are closed; the fourth stop valve 26 and the fifth stop valve 20 are opened. The hot refrigerant from the condenser 1 flows into the third inlet c of the solution deicing device 18 through the fifth stop valve 20, and exchanges heat with the ice cubes condensed on the cold finger B. The ice cubes attached to the surface of the cold finger B will fall off, and the fallen ice cubes will flow out along the conveyor belt G and the ice discharge port A.

[0050] Compared with traditional frost-free air source heat pumps, the present invention uses one set of heat pump units to achieve three operating modes: heating + deicing + ice removal. It 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 dehydration effect of the dehydrator. It has a low footprint and investment cost, is easy to operate, saves heat energy consumption, and improves the energy efficiency of the frost-free air source heat pump system.

[0051] It should be noted that the above embodiments can be freely combined as needed. The above description is only a detailed description of the preferred embodiments and principles of the present invention. For ordinary technicians in this field, according to the ideas provided by the present invention, there will be changes in the specific implementation methods, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. Solution deicing and dehydration device, characterized in that: It includes a shell and an ice making part, an ice storage chamber, a solution collector and a liquid storage chamber located in the shell; The ice storage chamber and the solution collector are arranged side by side, the top of the solution collector is isolated from the ice storage chamber by a partition, and the bottom of the solution collector is connected to the liquid storage chamber; The ice-making part is arranged on the top of the solution collector, and includes an ice-making tray and a freezing plate arranged opposite to each other. One end of the ice-making tray is hinged to one side of the shell, and the ice-making tray can rotate up and down around the hinge. One end of the freezing plate is connected to the driving device, and the other end extends horizontally. The freezing plate is provided with an ice-making heat exchange pipe and an ice-removing heat exchange pipe on the side facing away from the ice tray, and a plurality of cold fingers are fixed on the side facing the ice tray. The surface of the ice tray is provided with a plurality of ice-making grooves, and the solution pipe is provided on one side of the surface of the ice tray. When making ice, the ice tray is set horizontally, and multiple cold fingers are located in the corresponding ice-making grooves; after a certain period of time, the ice tray rotates downward, and the unfrozen solution in the ice tray flows into the solution collector; when defrosting, the ice tray is set vertically, and the driving device drives the freezing plate to move to the top of the ice storage chamber, and the melted ice cubes fall into the ice storage chamber; The housing comprises a first inlet for inflow of a dilute solution, a first outlet for outflow of a concentrated solution, a second inlet for inflow of an iced refrigerant and a second outlet for outflow of the iced refrigerant, a third inlet for inflow of a de-iced refrigerant and a third outlet for outflow of the de-iced refrigerant; The ice making tray also includes a controller. The hinge of the ice making tray is connected to a motor, and the motor drives the ice making tray to rotate up and down. The motor and the driving device are both electrically connected to the controller.

2. The solution deicing device according to claim 1, characterized in that: The first inlet is arranged at the inlet end of the solution tube, and the first outlet is arranged at the bottom of the liquid storage tank; the second inlet, the second outlet, the third inlet and the fourth outlet are all arranged on the top side of the shell, wherein the second inlet and the second outlet are respectively the two ends of the ice-forming heat exchange tube, and the third inlet and the third outlet are respectively the two ends of the ice-forming heat exchange tube.

3. The solution deicing device according to claim 2, characterized in that: An ice discharge port is provided at one side of the bottom of the ice storage chamber, and a conveyor belt is provided at the bottom of the ice storage chamber, and ice cubes flow out of the shell along the conveyor belt and the ice discharge port; or, the bottom of the ice storage chamber is a bottom plate inclined toward the ice discharge port, and ice cubes flow out of the shell along the bottom plate and the ice discharge port.

4. The solution deicing device according to claim 3, characterized in that: The ice making groove of the ice making tray is in a trapezoidal shape. When the ice making tray is arranged horizontally, the motor can also drive the ice making tray to swing.

5. A frost-free air source heat pump, using the solution deicing and water removal device according to any one of claims 1 to 4, characterized in that: It includes heating cycle and deicing cycle, among which: The heating cycle includes a compressor, a condenser, a first stop valve, a first throttle valve and an evaporator; The deicing cycle includes a solution heat exchange pipeline and a solution regeneration pipeline, wherein: The solution heat exchange pipeline includes an evaporator, a heat exchange tower and a first pump. The solution in the heat exchange tower is transported to the evaporator through the first pump, and returns to the top of the heat exchange tower after heat exchange with the refrigerant in the evaporator; the solution regeneration pipeline includes an evaporator, a solution ice dehydrator, a second pump and a heat exchange tower. Part of the refrigerant flowing out of the first throttle valve flows to the second inlet of the solution ice dehydrator through the third throttle valve, and the second outlet of the solution ice dehydrator is connected to the compressor; part of the solution after heat exchange with the refrigerant in the evaporator flows to the first inlet of the dehydrator through the second stop valve, and after heat exchange with the refrigerant in the solution ice dehydrator and ice dehydration, the part of the solution flows out from the first outlet of the solution ice dehydrator and is transported to the heat exchange tower through the second pump.

6. The frost-free air source heat pump according to claim 5, characterized in that: It also includes a deicing cycle, which includes a fifth stop valve and a dehydrator. The fifth stop valve is connected in parallel with the first stop valve. The refrigerant outlet of the condenser is connected to the third inlet of the solution deicing dehydrator through the fifth stop valve, and the third outlet of the solution deicing dehydrator is connected to the inlet of the first throttle valve.

7. The frost-free air source heat pump according to claim 6, characterized in that: It includes normal heating mode, heating + deicing and water removal mode and heating + deicing mode. In the normal heating mode and heating + deicing mode, the evaporator is connected to the compressor through the fourth stop valve; in the heating + deicing and water removal mode, the evaporator is connected to the compressor through the fourth throttle valve.

8. The frost-free air source heat pump according to claim 7, characterized in that: The heat exchange tower includes a solution tank and a heat exchange cavity located above the solution tank. The solution at the top of the heat exchange tower contacts and exchanges heat with air in the heat exchange cavity and then flows into the solution tank.

9. The frost-free air source heat pump according to any one of claims 6 to 8, characterized in that: The heating cycle is a single-stage compression heating cycle or a two-stage compression heating cycle.

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