Efficient module air conditioner heat exchanger

Abstract

The invention relates to the technical field of air conditioner heat exchangers, in particular to an efficient module air conditioner heat exchanger which comprises a machine shell, a distributor, a hairpin pipe arranged in the machine shell, a liquid side one-way valve module and an air side one-way valve module. The liquid side one-way valve module and the gas side one-way valve module are communicated with hairpin pipes on the windward side and the leeward side of the heat exchanger respectively to form a heat exchange unit, and the multiple heat exchange units are communicated with a distributor on the windward side of the heat exchanger and communicated with a gas phase refrigerant inlet and outlet pipe on the leeward side of the heat exchanger. According to the efficient module air conditioner heat exchanger, three-field cooperation is achieved, and the refrigeration condensation capacity and the heating evaporation capacity of the heat exchanger and the system energy efficiency are fully exerted.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning heat exchangers, and in particular to a high-efficiency module air-conditioning heat exchanger. Background Art

[0002] The outdoor unit heat exchanger has both cooling condensation and heating evaporation scenarios. The flow path design can only focus on cooling or heating, because the flow path design focusing on condensation is opposite to the flow path design focusing on evaporation. It can only be selected based on the specific gravity, and it is impossible to match the optimal condensation and evaporation capacities at the same time; moreover, the hardware design can only be one and cannot be varied. The heat exchanger lacks partitions, and the refrigerant flow and wind speed cannot be fully matched. Especially in top-out air-conditioning units, the wind speed difference between the upper and lower heat exchangers reaches a multiple relationship, resulting in the heat exchanger capacity cannot be fully utilized. Summary of the invention

[0003] The purpose of the present invention is to provide a high-efficiency modular air-conditioning heat exchanger to achieve three-field synergy and give full play to the cooling condensation and heating evaporation capabilities of the heat exchanger and its system energy efficiency.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency module air-conditioning heat exchanger includes a casing, a distributor, and a hairpin tube arranged inside the casing, and the distributor is connected to the liquid-phase refrigerant inlet and outlet pipes. On the basis of the prior art, the present invention makes further improvements: it also includes a liquid side one-way valve module and a gas side one-way valve module, and the liquid side one-way valve module and the gas side one-way valve module are respectively connected to the hairpin tubes on the windward side and the leeward side of the heat exchanger to form a heat exchange unit, and multiple heat exchange units are connected to the distributor on the windward side of the heat exchanger, and are connected to the gas-phase refrigerant inlet and outlet pipes on the leeward side of the heat exchanger.

[0005] Preferably, the liquid side one-way valve module comprises a liquid side one-way valve, two connecting pipes, and a liquid inlet and outlet pipe. Both ends of the liquid side one-way valve are respectively connected to a connecting pipe, and the connecting pipes are connected to the liquid inlet and outlet pipes.

[0006] Preferably, it further comprises a tee, wherein the tee is connected to the ends of the liquid inlet and outlet pipes.

[0007] Preferably, an end of one of the connecting tubes is connected to a sealing cap, and another of the connecting tubes is connected to a distributor.

[0008] Preferably, a filter screen is further included, and a filter screen is provided inside the connecting pipe connected to the distributor.

[0009] Preferably, the gas-side one-way valve module comprises a gas-side one-way valve, two connecting pipes, and an inlet and outlet pipes. Both ends of the gas-side one-way valve are respectively connected to a connecting pipe, and the connecting pipes are connected to the inlet and outlet pipes.

[0010] Preferably, one of the connecting pipes is also connected to the gas-phase refrigerant inlet and outlet pipes, and one end of the other connecting pipe is connected to a sealing cap.

[0011] Preferably, an electronic expansion valve is provided on the liquid-phase refrigerant inlet and outlet pipes.

[0012] Preferably, filters are provided on the front and rear end pipelines of the electronic expansion valve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Adopting module accumulation design, each module adopts a combination of one-way valves and other solutions to achieve different cooling and heating processes in each module, and realize a two-way design with a long cooling condensation flow path and a short heating evaporation flow path in the module, so as to give full play to the capacity of the heat exchanger and improve the energy efficiency of the whole machine;

[0015] To solve the problem of large difference in wind speed between top and bottom, the heat exchanger is disassembled into several units. The separate modules in each unit realize different flow path designs for cooling and heating. After the disassembly, the height difference of the heat exchange unit is small, and the wind speed difference is small.

[0016] The heat exchanger split unit module solution and the heat exchanger partition independent expansion valve solution are adopted to achieve full matching of refrigerant heat exchange and wind speed in the heat exchanger unit;

[0017] The one-way valve adopts a full stainless steel design to minimize the height of the one-way valve and compactly layout the module pipeline within the limited space of the heat exchanger. The integrated stainless steel is conducive to efficient and stable welding, improves production stability, and realizes quantitative production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the high-efficiency modular air-conditioning heat exchanger of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the high-efficiency modular air-conditioning heat exchanger of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the liquid side one-way valve module of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the gas-side one-way valve module of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the heat exchange unit of the present invention;

[0023] Figure 6 This is a schematic diagram of the refrigerant flow direction of the heat exchange unit during cooling;

[0024] Figure 7 This is a schematic diagram of the refrigerant flow direction of the heat exchange unit during heating.

[0025] In the figure: a casing 1, a distributor 2, a hairpin tube 3 arranged inside the casing, a liquid side one-way valve module 4, a gas side one-way valve module 5, a gas-phase refrigerant inlet and outlet pipe 6, a liquid-phase refrigerant inlet and outlet pipe 7, an electronic expansion valve 8, a filter 9, a liquid side one-way valve 41, a first liquid side connecting pipe 42, a second liquid side connecting pipe 43, a first liquid inlet and outlet pipe 44, a second liquid inlet and outlet pipe 45, a tee 46, a first sealing cap 47, a filter 48, a gas side one-way valve 51, a first gas side connecting pipe 52, a second gas side connecting pipe 53, a first gas inlet and outlet pipe 54, a second gas inlet and outlet pipe 55, a third gas inlet and outlet pipe 56, and a second sealing cap 57. DETAILED DESCRIPTION

[0026] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example

[0028] See also Figure 1 to Figure 2 A high-efficiency module air-conditioning heat exchanger includes a casing 1, a distributor 2, a hairpin tube 3 arranged inside the casing, a liquid-side one-way valve module 4, and a gas-side one-way valve module 5. The liquid-side one-way valve module 4 and the gas-side one-way valve module 5 are respectively connected to the hairpin tubes 3 on the windward side and the leeward side of the heat exchanger to form a heat exchange unit. A plurality of the heat exchange units are connected to the distributor 2 on the windward side of the heat exchanger, and are connected to the gas-phase refrigerant inlet and outlet pipes 6 on the leeward side of the heat exchanger. This embodiment shows nine heat exchange units composed of a liquid-side one-way valve module 4 and a gas-side one-way valve module 5, of which four heat exchange units are connected to a distributor 2 and a gas-phase refrigerant inlet and outlet pipe 6, and the other five heat exchange units are connected to a distributor 2 and another gas-phase refrigerant inlet and outlet pipe 6, and two distributors 2 are respectively connected to a liquid-phase refrigerant inlet and outlet pipe 7. In addition to the above-mentioned heat exchange unit, this embodiment also includes a single-inlet and single-outlet heat exchange unit that only includes a hairpin tube.

[0029] See also Figure 3-5As a preferred implementation of this embodiment, the liquid side one-way valve module 4 includes a liquid side one-way valve 41, a first liquid side connecting pipe 42, a second liquid side connecting pipe 43, a first liquid inlet and outlet pipe 44, and a second liquid inlet and outlet pipe 45. The two ends of the liquid side one-way valve 41 are respectively connected to the first liquid side connecting pipe 42 and the second liquid side connecting pipe 43. The liquid side one-way valve 41, the first liquid side connecting pipe 42, and the second liquid side connecting pipe 43 are made of stainless steel and can be integrally processed; a through hole is opened on the first liquid side connecting pipe 42 for connecting to the first liquid inlet and outlet pipe 44. Similarly, a through hole is also opened on the second liquid side connecting pipe 43 for connecting to the second liquid inlet and outlet pipe 45, wherein the first liquid inlet and outlet pipe 44 and the second liquid inlet and outlet pipe 45 are both made of copper.

[0030] Furthermore, the liquid-side one-way valve module 4 further includes a three-way connection 46 , which is connected to the end of the first liquid inlet and outlet pipes 44 . The end of the first liquid-side connecting pipe 42 is connected to a first sealing cap 47 .

[0031] Furthermore, the liquid-side one-way valve module 4 also includes a filter screen 48 , and the second liquid-side connecting pipe 43 is provided with a filter screen 48 inside.

[0032] The heat exchange unit of this embodiment is designed with 18 hairpin tube holes, such as Figure 5 As shown, the tee 46 and the second liquid inlet and outlet pipe 45 are directly connected to the hairpin pipe hole on the windward side. The second liquid side connecting pipe 43 is connected to the distributor 2.

[0033] As a preferred implementation scheme of this embodiment, the gas side one-way valve module 5 includes a gas side one-way valve 51, a first gas side connecting pipe 52, a second gas side connecting pipe 53, a first gas inlet and outlet pipe 54, a second gas inlet and outlet pipe 55, and a third gas inlet and outlet pipe 56. The first gas side connecting pipe 52 and the second gas side connecting pipe 53 are respectively provided with through holes for connecting the gas side connecting pipes. The first gas side connecting pipe 52, the second gas side connecting pipe 53, and the first gas inlet and outlet pipe 54 are all made of copper. The gas side one-way valve 51 and the first gas side connecting pipe 52 and the second gas side connecting pipe 53 are made of stainless steel and can be processed as one piece.

[0034] As a preferred implementation of this embodiment, the end of the first gas-side connecting pipe 52 is connected to the gas-phase refrigerant inlet and outlet pipes 6 , and one end of the second gas-side connecting pipe 53 is connected to the second sealing cap 57 .

[0035] The heat exchange unit of this embodiment is designed with 18 hairpin tube holes, such as Figure 5 As shown, the first gas inlet and outlet pipe 54, the second gas inlet and outlet pipe 55, and the third gas inlet and outlet pipe 56 are connected to the hairpin pipe holes on the windward side.

[0036] For further information, see Figure 1In this embodiment, an electronic expansion valve 8 is provided on the liquid phase refrigerant inlet and outlet pipes 7. A filter 9 is provided on the front and rear end pipelines of the electronic expansion valve 8.

[0037] like Figure 6 When the air conditioner is in cooling mode, this heat exchange unit has a total of 18 hairpin tube holes. Through the joint action of the gas side check valve module 5 and the liquid side check valve module 4, one inlet and one outlet are realized. The middle flow path adopts a three-way one-to-two combination to realize a refrigeration process that is 4.5 times the length of a hairpin tube, thereby increasing the condensation effect.

[0038] like Figure 7 When the air conditioner is in heating mode, this heat exchange unit has a total of 18 hairpin holes. The gas-side check valve module 5 and the liquid-side check valve module 4 are both in the conduction state during evaporation. A three-way one-divided-into-two flow path arrangement is adopted to achieve a heating evaporation process that is 1.5 times the length of a hairpin tube, thereby increasing the evaporation pressure of the heat exchanger and improving the heating capacity and energy efficiency of the system.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency modular air-conditioning heat exchanger, comprising a casing, a distributor, and a hairpin tube arranged inside the casing, wherein the distributor is connected to the inlet and outlet pipes of the liquid refrigerant, and is characterized in that: It also includes a liquid side one-way valve module and a gas side one-way valve module, which are respectively connected to the hairpin pipes on the windward side and the leeward side of the heat exchanger to form a heat exchange unit. Multiple heat exchange units are connected to the distributor on the windward side of the heat exchanger, and are connected to the gas-phase refrigerant inlet and outlet pipes on the leeward side of the heat exchanger.

2. The high-efficiency modular air-conditioning heat exchanger according to claim 1 is characterized in that: The liquid side one-way valve module comprises a liquid side one-way valve, two connecting pipes, and a liquid inlet and outlet pipe. Both ends of the liquid side one-way valve are respectively connected to a connecting pipe, and the connecting pipes are connected to the liquid inlet and outlet pipes.

3. The high-efficiency modular air-conditioning heat exchanger according to claim 2 is characterized in that: It also includes a tee, which is connected to the ends of the liquid inlet and outlet pipes.

4. The high-efficiency modular air-conditioning heat exchanger according to claim 2 is characterized in that: The end of one of the connecting tubes is connected to a sealing cap, and the other connecting tube is connected to a distributor.

5. The high-efficiency modular air-conditioning heat exchanger according to claim 4 is characterized in that: It also includes a filter screen, and the filter screen is arranged inside the connecting pipe connected to the distributor.

6. The high-efficiency modular air-conditioning heat exchanger according to claim 1 is characterized in that: The gas-side one-way valve module comprises a gas-side one-way valve, two connecting pipes, and a gas inlet and outlet pipe. Both ends of the gas-side one-way valve are respectively connected to a connecting pipe, and the connecting pipes are connected to the inlet and outlet pipes.

7. The high-efficiency modular air-conditioning heat exchanger according to claim 6, characterized in that: One of the connecting pipes is also connected to the gas-phase refrigerant inlet and outlet pipes, and one end of the other connecting pipe is connected to a sealing cap.

8. The high-efficiency modular air-conditioning heat exchanger according to claim 1, characterized in that: The liquid-phase refrigerant inlet and outlet pipes are provided with electronic expansion valves.

9. The high-efficiency modular air-conditioning heat exchanger according to claim 8, characterized in that: Filters are arranged on the front and rear end pipelines of the electronic expansion valve.

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