Heat pump for improving shunting of evaporator

Abstract

The utility model discloses a heat pump capable of improving evaporator shunting, which comprises a heat pump body, a shunting head, two fin evaporators and two axial flow fans, the two fin evaporators and the two axial flow fans are respectively arranged in the heat pump body, and the heat pump further comprises a circulating mechanism, a heat exchange mechanism and a heat exchange mechanism, a flow guide ring is arranged on the inner wall of an inlet of the flow dividing head, a plurality of flow dividing capillary tubes are arranged on the outer wall of one side of the flow guide ring, a plurality of inlet ends are arranged on the inner wall of the fin evaporator, the flow dividing capillary tubes are connected with the inlet ends, and a gas collecting pipe assembly is arranged on the outer wall of one side of the fin evaporator. The inner wall of the gas collecting pipe assembly is provided with two gas collecting pipe openings which are distributed at equal intervals. The heat pump capable of improving flow division of the evaporator has the advantages that refrigerants are evenly sprayed through the flow guide ring, the flow division effect is good, the number of holes of the flow division head and the number of the flow division capillary tubes can be reduced, cost is saved, and circulating heating can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a heat pump with improved evaporator diversion. Background Art

[0002] A heat pump is a highly efficient and energy-saving device that can transfer heat energy from a low-level heat source to a high-level heat source. The working principle of a heat pump is based on the principles of thermodynamics. It achieves heat transfer by consuming a small amount of electrical energy or thermal energy. A heat pump with evaporator shunt is a highly efficient and energy-saving heating and cooling device.

[0003] However, when using a traditional evaporator-diverting heat pump, multiple holes are often set on the diverter head to divert the refrigerant, and then divert it to the evaporator pipe structure with one inlet and one outlet. This requires a large number of diversion capillaries and has a poor diversion effect.

[0004] For example, the diversion of the evaporator is an important component that affects the heating of the system. When the diverter head diverts the refrigerant, it needs to divert the refrigerant at multiple hole positions. The diversion to the evaporator pipe is uneven, and the number of hole positions and diversion capillaries need to correspond when entering and exiting. This results in high cost and low diversion efficiency. Utility Model Content

[0005] The utility model discloses a heat pump with improved evaporator diversion, aiming to solve the technical problem that when a traditional evaporator diversion heat pump is used, a plurality of holes are often provided on the diversion head to divert the refrigerant, and then the refrigerant is diverted to an evaporator pipe structure with one inlet and one outlet, which requires a large number of diversion capillaries and has a poor diversion effect.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A heat pump with improved evaporator flow splitting includes a heat pump body, a splitter head, and two finned evaporators and two axial flow fans respectively arranged in the heat pump body, and further includes:

[0008] Circulation mechanism: the circulation mechanism is connected to the fin evaporator;

[0009] A guide ring is provided on the inner wall of the diverter head inlet, and a plurality of diverter capillaries are provided on the outer wall of one side of the guide ring. A plurality of inlet ends are provided on the inner wall of the fin evaporator, and the diverter capillaries are connected to the inlet ends. A gas collecting pipe assembly is provided on the outer wall of one side of the fin evaporator, and two gas collecting pipe openings equidistantly distributed are provided on the inner wall of the gas collecting pipe assembly. The diverter capillaries are used in conjunction with the inlet ends and the gas collecting pipe openings.

[0010] In this solution, a guide ring is added at the inlet of the diverter head so that the refrigerant passing through it can be evenly sprayed to the inlet of the diverter capillary tube, with a good diversion effect. Then, after the diversion outlet, it enters the collecting pipe assembly of the one-inlet and two-outlet fin evaporator, reducing the number of holes in the diverter head and the number of diverter capillaries. By using one diverter inlet and two collecting pipe outlets and adding a tee to the fin evaporator, the inlet pipe length reaches the target length, and the number of diverter capillaries can be reduced, thereby saving costs and improving the target effect.

[0011] In a preferred embodiment, the circulation mechanism includes a four-way valve arranged on one side of the fin evaporator, and the four-way valve is respectively provided with a compressor, a vapor-liquid separator and a high-efficiency tank heat exchanger, and the high-efficiency tank heat exchanger is respectively provided with a circulating water pump and a liquid storage tank, and the liquid storage tank is connected to the diverter head. The compressor is provided with an exhaust probe, two pressure controllers are provided between the four-way valve and the compressor, a pressure controller and a return air probe are provided in sequence between the compressor and the vapor-liquid separator, a needle valve is provided between the four-way valve and the vapor-liquid separator, a needle valve is provided between the high-efficiency tank heat exchanger and the liquid storage tank, and a filter and a main electronic expansion valve are provided in sequence between the liquid storage tank and the diverter head.

[0012] By adopting the above technical solution, when the circulation mechanism is working, the high-temperature, high-pressure refrigerant gas discharged by the compressor flows through the high-efficiency tank heat exchanger through the four-way valve, transfers heat to the heat-carrying medium and then turns into liquid. The high-pressure refrigerant liquid coming out of the high-efficiency tank heat exchanger flows through the liquid storage tank, which is equipped with a needle valve for vacuuming. After passing through the filter, it is throttled and reduced in pressure by the electronic expansion valve and then enters the guide ring in front of the diverter head. The guide ring evenly embeds the throttled refrigerant and then sprays it through the diverter capillary tube into the fin evaporator. In the fin evaporator, the refrigerant in the main circuit absorbs heat in the low-temperature environment and turns into low-pressure gas, which is sucked into the compressor suction port, and circulates in sequence to achieve the heating effect.

[0013] As can be seen from the above, a heat pump with improved evaporator flow splitting includes a heat pump body, a splitter head, and two finned evaporators and two axial flow fans respectively arranged in the heat pump body, and also includes:

[0014] Circulation mechanism: the circulation mechanism is connected to the fin evaporator;

[0015] A guide ring is provided on the inner wall of the diverter head inlet, and a plurality of diverter capillaries are provided on one outer wall of the guide ring. The inner wall of the fin evaporator is provided with a plurality of inlet ends, and the diverter capillaries are connected to the inlet ends. A manifold assembly is provided on one outer wall of the fin evaporator, and two manifold openings are provided on the inner wall of the manifold assembly at equal distances. The diverter capillaries are used in conjunction with the inlet ends and the manifold openings. The heat pump with improved evaporator diversion provided by the utility model has the advantages of uniformly spraying refrigerant through the guide ring, achieving good diversion effect, reducing the number of holes in the diverter head and the number of diverter capillaries, saving costs, and achieving the technical effect of cyclic heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the overall structure of a heat pump with improved evaporator diversion proposed by the utility model.

[0017] Figure 2 This is a side view of the overall structure of a heat pump with improved evaporator diversion proposed by the utility model.

[0018] Figure 3 This is a connection circuit diagram of a finned evaporator of a heat pump that improves evaporator flow diversion, as proposed by the utility model.

[0019] Figure 4 This is an enlarged view of the guide ring structure of a heat pump that improves evaporator diversion, as proposed by the utility model.

[0020] In the attached figure: 1. Heat pump body; 2. Finned evaporator; 3. Axial flow fan; 4. Gas collecting pipe assembly; 5. Diverter; 6. Guide ring; 7. Compressor; 8. Vapor-liquid separator; 9. Liquid storage tank; 10. High-efficiency tank heat exchanger; 11. Exhaust probe; 12. Return air probe; 13. Four-way valve; 14. Pressure controller; 15. Filter; 16. Needle valve; 17. Circulating water pump; 18. Main electronic expansion valve; 19. Inlet end; 20. Gas collecting pipe outlet. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0022] The utility model discloses a heat pump with improved evaporator diversion, which is mainly used in traditional evaporator diversion heat pumps. When used, a plurality of holes are often provided on the diversion head to divert the refrigerant, and then the refrigerant is diverted to the evaporator pipe structure with one inlet and one outlet. A large number of diversion capillaries are required, and the diversion effect is poor.

[0023] Reference Figure 1 、 Figure 2 and Figure 4 A heat pump with improved evaporator flow splitting includes a heat pump body 1, a splitter head 5, two finned evaporators 2 and two axial flow fans 3 respectively arranged in the heat pump body 1, and further includes:

[0024] Circulation mechanism: The circulation mechanism is connected to the finned evaporator 2;

[0025] A guide ring 6 is provided on the inner wall at the inlet of the diverter head 5, and a plurality of diverter capillaries are provided on the outer wall of one side of the guide ring 6. A plurality of inlet ends 19 are opened on the inner wall of the fin evaporator 2, and the diverter capillaries are connected to the inlet ends 19. A gas collecting pipe assembly 4 is provided on the outer wall of one side of the fin evaporator 2, and two gas collecting pipe openings 20 distributed at equal distances are opened on the inner wall of the gas collecting pipe assembly 4. The diverter capillaries are used in conjunction with the inlet ends 19 and the gas collecting pipe openings 20.

[0026] During the specific working process, the fin evaporator 2 and the axial flow fan 3 are both located in the heat pump body 1. The fin design and the operation of the axial flow fan 3 can circulate air when the heat pump body 1 is working, thereby improving the heat exchange efficiency. A guide ring 6 is connected to the inlet of the diverter head 5, so that the refrigerant passing through it can be evenly sprayed to the inlet of the diverter capillary under the action of the guide ring 6, and then enter the one-inlet and two-outlet fin evaporator 2 into the gas collecting pipe assembly 4 after the diverter outlet, reducing the number of holes in the diverter head 5 and the number of diverter capillaries. The diverter capillary introduces the refrigerant from the inlet end 19 and then leads it out from the two gas collecting pipe ports 20. The method of adding a tee to the fin evaporator 2 makes the diverter capillary connected to the fin evaporator 2 to introduce the refrigerant for operation.

[0027] Among them, the guide ring 6 is set to a conical surface and circular arc structure, and the conical surface and circular arc guide ring is installed in the diversion head 5, so that the refrigerant passing through it can be evenly sprayed from the conical surface position into the diversion capillary. Only one guide ring 6 is needed to make the refrigerant evenly sprayed, and there is no need to set multiple holes to install multiple diversion capillaries, which saves costs and has a better diversion effect.

[0028] Among them, one inlet port 19 corresponds to the position of two gas collecting pipe ports 20, and the number of diversion capillaries corresponds to the number of inlet ports 19, satisfying the one-inlet and two-outlet fin evaporator 2 piping structure, entering through one inlet port 19 and then being discharged from the two gas collecting pipe ports 20, increasing the three-way effect of the fin evaporator 2, and the number of diversion capillaries corresponds one-to-one to the number of inlet ports 19, so that each diversion capillary is connected to the corresponding inlet port 19. Compared with the original one-inlet and one-out design principle, the diversion effect of this scheme is better.

[0029] Among them, the guide ring 6 is used in conjunction with the diversion capillary and the fin evaporator 2. By setting the guide ring 6, the fin evaporator 2 can meet the pipe length of its pipeline when diverting. By adding a conical guide ring 6, the diversion capillary is connected to the fin evaporator 2, which can achieve uniform spraying and reduce the number of holes in the diversion head 5, thereby reducing the effect of the diversion capillary.

[0030] Reference Figure 3 and Figure 4 In a preferred embodiment, the circulation mechanism includes a four-way valve 13 arranged on one side of the fin evaporator 2, and the four-way valve 13 is respectively provided with a compressor 7, a vapor-liquid separator 8 and a high-efficiency tank heat exchanger 10, and the high-efficiency tank heat exchanger 10 is respectively provided with a circulating water pump 17 and a liquid storage tank 9, and the liquid storage tank 9 is connected to the diverter 5. An exhaust probe 11 is provided on the compressor 7, two pressure controllers 14 are provided between the four-way valve 13 and the compressor 7, a pressure controller 14 and a return air probe 12 are sequentially provided between the compressor 7 and the vapor-liquid separator 8, a needle valve 16 is provided between the four-way valve 13 and the vapor-liquid separator 8, a needle valve 16 is provided between the high-efficiency tank heat exchanger 10 and the liquid storage tank 9, and a filter 15 and a main electronic expansion valve 18 are sequentially provided between the liquid storage tank 9 and the diverter 5.

[0031] Specifically, when the circulation mechanism is working, the high-temperature, high-pressure refrigerant gas discharged by the compressor 7 flows through the high-efficiency tank heat exchanger 10 through the four-way valve 13, transfers heat to the heat-carrying medium and then turns into liquid. The high-pressure refrigerant liquid coming out of the high-efficiency tank heat exchanger 10 flows through the liquid storage tank 9, and the liquid storage tank 9 is equipped with a needle valve 16 for vacuuming. After passing through the filter 15, it is throttled and reduced in pressure by the electronic expansion valve and then enters the guide ring 6 in front of the diverter head 5. The guide ring 6 evenly embeds the throttled refrigerant and then sprays it through the diverter capillary into the fin evaporator 2. In the fin evaporator 2, the refrigerant in the main circuit absorbs heat in the low-temperature environment and becomes low-pressure gas, which is sucked into the air intake of the compressor 7, thereby achieving cyclic heating in sequence.

[0032] Among them, a circulation system is formed between the fin evaporator 2, the compressor 7, the vapor-liquid separator 8, the high-efficiency tank heat exchanger 10 and the liquid storage tank 9. The compressor 7 discharges high-temperature, refrigerant gas, the high-efficiency tank heat exchanger 10 converts the heat into liquid, the vapor-liquid separator 8 separates it, and the liquid storage tank 9 is evacuated to divert the refrigerant into the fin evaporator 2. The low-pressure gas in the fin evaporator 2 is then sucked into the compressor 7, thereby circulating heating to achieve efficient and stable operation of the heat pump body 1.

[0033] Working principle: When in use, the circulation mechanism circulates and heats. When the refrigerant is introduced into the fin evaporator 2, the guide ring 6 provided in the diverter head 5 allows the refrigerant passing through to be evenly sprayed to the inlet of the diverter capillary tube, and then enters the one-inlet and two-outlet gas collecting pipe assembly 4 of the fin evaporator 2 after the diverter outlet, reducing the number of holes in the diverter head 5 and the number of diverter capillaries. A diverter is used to introduce the refrigerant from the inlet end 19 and then output it from the two gas collecting pipe ports 20. The fin evaporator 2 is added with a tee, so that the refrigerant is evenly diverted into the fin evaporator 2 through the diverter capillary tube, and then the low-pressure gas is sucked in by the compressor 7 for circulation and heating.

[0034] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacements described may be partial structures, devices, or method steps, or they may be complete technical solutions. Any equivalent replacements or modifications based on the technical solution and the concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A heat pump with improved evaporator flow splitting, comprising a heat pump body (1), a splitter head (5), and two finned evaporators (2) and two axial flow fans (3) respectively arranged in the heat pump body (1), characterized in that: Also includes: Circulation mechanism: the circulation mechanism is connected to the fin evaporator (2); A guide ring (6) is provided on the inner wall of the inlet of the diverter head (5), and a plurality of diverter capillaries are provided on the outer wall of one side of the guide ring (6). A plurality of inlet ends (19) are provided on the inner wall of the fin evaporator (2), and the diverter capillaries are connected to the inlet ends (19). A gas collecting pipe assembly (4) is provided on the outer wall of one side of the fin evaporator (2), and two gas collecting pipe openings (20) distributed at equal distances are provided on the inner wall of the gas collecting pipe assembly (4). The diverter capillaries are used in conjunction with the inlet ends (19) and the gas collecting pipe openings (20).

2. The heat pump with improved evaporator flow splitting according to claim 1, characterized in that: The guide ring (6) is configured as a conical surface and circular arc structure.

3. The heat pump with improved evaporator flow splitting according to claim 2, characterized in that: One inlet port (19) corresponds to the position of two gas collecting pipe ports (20), and the number of the flow dividing capillaries corresponds to the number of the inlet ports (19).

4. The heat pump with improved evaporator flow splitting according to claim 3, characterized in that: The guide ring (6) is used in conjunction with the diversion capillary tube and the finned evaporator (2).

5. The heat pump with improved evaporator flow splitting according to claim 1, characterized in that: The circulation mechanism comprises a four-way valve (13) provided on one side of the finned evaporator (2); a compressor (7), a vapor-liquid separator (8) and a high-efficiency tank heat exchanger (10) are respectively provided on the four-way valve (13); a circulating water pump (17) and a liquid storage tank (9) are respectively provided on the high-efficiency tank heat exchanger (10); and the liquid storage tank (9) is connected to the diverter (5).

6. The heat pump with improved evaporator flow splitting according to claim 5, characterized in that: An exhaust probe (11) is provided on the compressor (7), two pressure controllers (14) are provided between the four-way valve (13) and the compressor (7), a pressure controller (14) and a return air probe (12) are provided in sequence between the compressor (7) and the vapor-liquid separator (8), a needle valve (16) is provided between the four-way valve (13) and the vapor-liquid separator (8), a needle valve (16) is provided between the high-efficiency tank heat exchanger and the liquid storage tank (9), and a filter (15) and a main electronic expansion valve (18) are provided in sequence between the liquid storage tank (9) and the diverter (5).

7. The heat pump with improved evaporator flow splitting according to claim 6, characterized in that: A circulation system is formed between the finned evaporator (2), the compressor (7), the vapor-liquid separator (8), the high-efficiency tank heat exchanger (10) and the liquid storage tank (9).

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