Efficient module air conditioner heat exchanger

Abstract

The utility model 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 of the heat exchanger are fully exerted.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning heat exchanger technology, specifically a high-efficiency modular air conditioning heat exchanger. Background Technology

[0002] Outdoor unit heat exchangers operate in both cooling / condensing and heating / evaporating scenarios. Flow path design can only prioritize either cooling or heating. Since flow path designs that prioritize condensation are opposite to those that prioritize evaporation, a trade-off must be made based on their relative importance, making it impossible to simultaneously match the optimal condensing and evaporating capabilities. Furthermore, the hardware design is limited to one type and cannot be varied. The heat exchanger lacks zoning, and refrigerant flow and air velocity cannot be fully matched. This is especially true in top-discharge air conditioning units, where the air velocity difference between the upper and lower heat exchangers can reach multiples, preventing the heat exchanger from fully utilizing its capacity. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency modular air conditioner heat exchanger that achieves three-field synergy, fully utilizes the heat exchanger's cooling and condensing and heating and evaporating capabilities, and enhances the system's energy efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency modular air conditioning heat exchanger includes a casing, a distributor, and a hairpin tube disposed inside the casing. The distributor is connected to the inlet and outlet pipes of the liquid refrigerant. Based on the prior art, this utility model makes further improvements: it also includes a liquid-side one-way valve module and a gas-side one-way valve module. 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. Multiple heat exchange units are connected to the distributor on the windward side of the heat exchanger and to the inlet and outlet pipes of the gas refrigerant on the leeward side of the heat exchanger.

[0005] Preferably, the liquid-side check valve module includes a liquid-side check valve, two connecting pipes, and liquid inlet and outlet pipes. Each end of the liquid-side check valve is connected to a connecting pipe, and the connecting pipes are connected to the liquid inlet and outlet pipes.

[0006] Preferably, it also includes a tee, which is connected to the end of the liquid inlet / outlet pipe.

[0007] Preferably, one end of the connecting tube is connected to a cap, and the other connecting tube is connected to a distributor.

[0008] Preferably, it also includes a filter screen, and the connecting pipe of the connecting distributor is provided with a filter screen.

[0009] Preferably, the gas-side one-way valve module includes a gas-side one-way valve, two connecting pipes, and inlet and outlet pipes. Each end of the gas-side one-way valve is 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 inlet and outlet pipes of the liquid refrigerant.

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

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The modular cumulative design employs a combination of one-way valves and other solutions within each module, enabling different cooling and heating processes within each module. This achieves a bidirectional design with a long cooling condensation flow path and a short heating evaporation flow path within the module, fully utilizing the heat exchanger's capacity and improving the overall energy efficiency.

[0015] To address the issue of significant differences in air velocity between the top and bottom of the outlet, the heat exchanger is disassembled into several units. Each unit contains a separate module that implements different flow path designs for cooling and heating. The disassembled heat exchange units have small height differences and small differences in air velocity between the top and bottom.

[0016] By adopting a heat exchanger modular unit scheme and a heat exchanger zone independent expansion valve scheme, the refrigerant heat exchange and air velocity within the heat exchanger unit are fully matched.

[0017] The check valve adopts an all-stainless steel design, which minimizes the height of the check valve and allows for a compact layout of the module piping within the limited space of the heat exchanger. The integrated stainless steel design facilitates efficient and stable welding, improves production stability, and enables mass production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the high-efficiency modular air conditioner heat exchanger of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the high-efficiency modular air conditioner heat exchanger of this utility model;

[0020] Figure 3 This is a schematic diagram of the liquid-side check valve module of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the air-side one-way valve module of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the heat exchange unit of this utility model;

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

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

[0025] In the diagram: 1. Housing; 2. Distributor; 3. Hairpin tube inside the housing; 4. Liquid-side check valve module; 5. Gas-side check valve module; 6. Gas phase refrigerant inlet / outlet pipe; 7. Liquid phase refrigerant inlet / outlet pipe; 8. Electronic expansion valve; 9. Filter; 41. Liquid-side check valve; 42. First liquid-side connecting pipe; 43. Second liquid-side connecting pipe; 44. First liquid inlet / outlet pipe; 45. Second liquid inlet / outlet pipe; 46. T-junction; 47. First sealing cap; 48. Filter screen; 51. Gas-side check valve; 52. First gas-side connecting pipe; 53. Second gas-side connecting pipe; 54. First gas inlet / outlet pipe; 55. Third gas inlet / outlet pipe; 56. Second sealing cap; 57. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example

[0028] Please see Figures 1 to 2 A high-efficiency modular air conditioning heat exchanger includes a housing 1, a distributor 2, hairpin tubes 3 disposed inside the housing, 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 and leeward sides of the heat exchanger to form a heat exchange unit. Multiple heat exchange units are connected to the distributor 2 on the windward side of the heat exchanger and 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 liquid-side one-way valve modules 4 and gas-side one-way valve modules 5, of which four heat exchange units are connected to one distributor 2 and one gas phase refrigerant inlet and outlet pipe 6, and the other five heat exchange units are connected to one distributor 2 and another gas phase refrigerant inlet and outlet pipe 6. The two distributors 2 are respectively connected to one liquid phase refrigerant inlet and outlet pipe 7. In addition to the above-mentioned heat exchange units, this embodiment also includes a single-inlet, single-outlet heat exchange unit containing only hairpin tubes.

[0029] See Figure 3-5In a preferred embodiment of this invention, the liquid-side check valve module 4 includes a liquid-side check valve 41, a first liquid-side connecting pipe 42, a second liquid-side connecting pipe 43, a first liquid inlet / outlet pipe 44, and a second liquid inlet / outlet pipe 45. The two ends of the liquid-side check valve 41 are respectively connected to the first liquid-side connecting pipe 42 and the second liquid-side connecting pipe 43. The liquid-side check 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 machined. The first liquid-side connecting pipe 42 has a through hole for connecting the first liquid inlet / outlet pipe 44. Similarly, the second liquid-side connecting pipe 43 also has a through hole for connecting the second liquid inlet / outlet pipe 45. The first liquid inlet / outlet pipe 44 and the second liquid inlet / outlet pipe 45 are both made of copper.

[0030] Furthermore, the liquid-side check valve module 4 also includes a tee 46, which is connected to the end of the first liquid inlet / outlet pipe 44. The end of the first liquid-side connecting pipe 42 is connected to the first cap 47.

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

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

[0033] In a preferred embodiment of this invention, the gas-side check valve module 5 includes a gas-side check valve 51, a first gas-side connecting pipe 52, a second gas-side connecting pipe 53, a first gas inlet / outlet pipe 54, a second gas inlet / outlet pipe 55, and a third gas inlet / 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 / outlet pipe 54 are all made of copper, while the gas-side check 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 integrally machined.

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

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

[0036] Furthermore, see Figure 1In this embodiment, an electronic expansion valve 8 is installed on the liquid refrigerant inlet and outlet pipes 7. Filters 9 are installed on the front and rear end pipes of the electronic expansion valve 8.

[0037] like Figure 6 When the air conditioner is in cooling mode, this heat exchange unit has 18 hairpin tube holes. Through the combined action of the gas-side one-way valve module 5 and the liquid-side one-way valve module 4, it achieves one inlet and one outlet. The middle flow path adopts a three-way split into two combination to achieve a 4.5U cooling process design and increase the condensation effect.

[0038] like Figure 7 When the air conditioner is in heating mode, this heat exchange unit has 18 hairpin tube holes. The gas-side one-way valve module 5 and the liquid-side one-way valve module 4 are both in the conducting state during evaporation. The three-way one-to-two flow path arrangement is adopted to realize a heating evaporation process of 1.5U, increase the evaporation pressure of the heat exchanger, and improve the heating capacity and energy efficiency of the system.

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

Claims

1. A high-efficiency modular air conditioner heat exchanger, comprising a housing, a distributor, and a hairpin tube disposed inside the housing, wherein the distributor is connected to the inlet and outlet pipes of liquid refrigerant, characterized in that: The liquid-side one-way valve module and the gas-side one-way valve module are respectively communicated with the hairpin tubes of the windward side and the leeward side of the heat exchanger to form a heat exchange unit, a plurality of heat exchange units are communicated with the distributor of the windward side of the heat exchanger, and are communicated with the gas-phase refrigerant inlet and outlet pipes of the leeward side of the heat exchanger.

2. The high-efficiency modular air conditioner heat exchanger of claim 1, wherein: The liquid-side one-way valve module comprises a liquid-side one-way valve, two connecting pipes and liquid inlet and outlet pipes, two ends of the liquid-side one-way valve are respectively connected with one connecting pipe, and the connecting pipes are connected with the liquid inlet and outlet pipes.

3. The high-efficiency modular air conditioner heat exchanger of claim 2, wherein: A three-way pipe is further connected to the end of the liquid inlet and outlet pipes.

4. The high-efficiency modular air conditioner heat exchanger of claim 2, wherein: The end of one connecting pipe is connected with a cap, and the other connecting pipe is connected with a distributor.

5. The high-efficiency modular air conditioner heat exchanger of claim 4, wherein: A filter screen is further arranged in the connecting pipe connected with the distributor.

6. The high-efficiency modular air conditioner heat exchanger of claim 1, wherein: The gas-side one-way valve module comprises a gas-side one-way valve, two connecting pipes and gas inlet and outlet pipes, two ends of the gas-side one-way valve are respectively connected with one connecting pipe, and the connecting pipes are connected with the inlet and outlet pipes.

7. The high-efficiency modular air conditioner heat exchanger of claim 6, wherein: One connecting pipe is further connected with the gas-phase refrigerant inlet and outlet pipes, and the other connecting pipe is connected with a cap at one end.

8. The high-efficiency modular air conditioner heat exchanger of claim 1, wherein: An electronic expansion valve is arranged on the liquid-phase refrigerant inlet and outlet pipes.

9. The high-efficiency modular air conditioner heat exchanger of claim 8, wherein: Filters are arranged on the front and rear pipe lines of the electronic expansion valve.

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