Refrigerant distribution structure and air conditioning unit

Abstract

The utility model belongs to pipeline connection technical field discloses a kind of refrigerant distribution structure and air conditioning unit, and refrigerant distribution structure is used to distribute the refrigerant from compressor, the refrigerant distribution structure includes connecting pipe assembly, bellows assembly and heat exchanger assembly, after completing the welding communication of second connecting pipe and first heat exchanger and third connecting pipe and second heat exchanger, refrigerant flows out from compressor and enters by first connecting pipe, is divided into two by second connecting pipe and third connecting pipe, when the refrigerant to first heat exchanger is less, by adjusting the angle of first bellows and second bellows, the communication angle of first heat exchanger inlet and second connecting pipe and the communication angle of second heat exchanger inlet and third connecting pipe are changed, the flow direction of refrigerant is deviated to first heat exchanger, the refrigerant to second heat exchanger is reduced, to reach the effect of even distribution of refrigerant, improve the working efficiency of first heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and in particular to a refrigerant distribution structure and an air conditioning unit. Background Technology

[0002] Air conditioners are increasingly used in homes and offices, providing people with a comfortable living and working environment. In air conditioning systems, heat exchangers often employ a multi-flow-path design to balance the relationship between the refrigerant's heat transfer coefficient and pressure drop, thereby enabling the heat exchanger to achieve optimal capacity and energy efficiency.

[0003] Commercially available air conditioning units cannot have their refrigerant distribution adjusted after leaving the factory. Ensuring even refrigerant distribution requires extensive tooling and advanced manufacturing processes to maintain a certain margin of error, maximizing heat exchange efficiency. Furthermore, refrigerant distribution cannot be adjusted after the unit leaves the factory. If the refrigerant distribution is severely uneven, the only solution is to release the refrigerant, re-weld and adjust the piping, and then refill the unit. Moreover, misaligned welding of the tee connecting to the heat exchanger's liquid line can also lead to uneven refrigerant distribution, wasting heat exchange area and affecting the unit's performance. This problem cannot be quickly resolved; it requires releasing the refrigerant, realigning the tee, and re-welding, wasting refrigerant and incurring high repair costs.

[0004] Therefore, there is an urgent need to propose a refrigerant distribution structure and air conditioning unit to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a refrigerant distribution structure that, through manual adjustment, solves the problem of uneven refrigerant distribution caused by misaligned T-joint welding due to production errors, thereby achieving the effect of even refrigerant distribution between two unbalanced heat exchangers and improving the working efficiency of the heat exchangers.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A refrigerant distribution structure for distributing refrigerant from a compressor, the refrigerant distribution structure comprising:

[0008] A connecting pipe assembly, comprising a first connecting pipe, a second connecting pipe, and a third connecting pipe that are interconnected, wherein one end of the first connecting pipe is connected to the air outlet of the compressor;

[0009] A bellows assembly, comprising a first bellows and a second bellows, wherein one end of the first bellows is connected to one end of a second connecting pipe, and one end of the second bellows is connected to one end of a third connecting pipe.

[0010] The heat exchanger assembly includes a first heat exchanger and a second heat exchanger. The pipe wall at the inlet of the first heat exchanger is welded to the pipe wall at the other end of the first corrugated pipe, and the pipe wall at the inlet of the second heat exchanger is welded to the pipe wall at the other end of the second corrugated pipe.

[0011] Preferably, the refrigerant distribution structure also includes an electronic expansion valve, the inlet of which is connected to the outlet of the compressor, and the outlet of which is connected to one end of the first connecting pipe.

[0012] Preferably, the bellows assembly also includes a third bellows, one end of which is connected to the outlet of the electronic expansion valve, and the other end of which is connected to one end of the first connecting pipe.

[0013] Preferably, the first, second, and third corrugated pipes are all metal corrugated pipes.

[0014] Preferably, the first connecting pipe, the second connecting pipe, and the third connecting pipe are all made of metal.

[0015] Preferably, the wall of the second connecting pipe is fixedly connected to the wall of the first corrugated pipe, the wall of the third connecting pipe is fixedly connected to the wall of the second corrugated pipe, and the wall of the first connecting pipe is fixedly connected to the wall of the third corrugated pipe.

[0016] Preferably, the first heat exchanger and / or the second heat exchanger are finned heat exchangers.

[0017] Preferably, the entire connecting pipe assembly is Y-shaped.

[0018] Another objective of this invention is to provide an air conditioning unit that avoids the problem of uneven refrigerant distribution caused by misaligned T-joint welding due to production errors. During online testing of the unit, manual adjustment can be used to achieve even refrigerant distribution, thereby improving the working efficiency of the heat exchanger and reducing energy waste.

[0019] To achieve this objective, the present invention adopts the following technical solution:

[0020] An air conditioning unit is characterized in that it includes a compressor and the above-mentioned refrigerant distribution structure, and one end of a first connecting pipe is connected to the air outlet of the compressor.

[0021] Preferably, the air conditioning unit also includes a three-way pipe, which has a first inlet, a second inlet and an outlet. The first inlet is connected to the outlet of the first heat exchanger, the second inlet is connected to the outlet of the second heat exchanger, and the outlet of the three-way pipe is connected to the air inlet of the compressor.

[0022] The beneficial effects of this utility model are:

[0023] This invention provides a refrigerant distribution structure for distributing refrigerant from a compressor. The structure includes a connecting pipe assembly, a bellows assembly, and a heat exchanger assembly. After the second connecting pipe is welded to the first heat exchanger and the third connecting pipe to the second heat exchanger, the refrigerant flows from the compressor through the first connecting pipe and is then divided in two by the second and third connecting pipes. When less refrigerant flows to the first heat exchanger, the angles of the first and second bellows are adjusted to change the connection angle between the inlet of the first heat exchanger and the second connecting pipe, and the connection angle between the inlet of the second heat exchanger and the third connecting pipe. This causes the refrigerant flow to be biased towards the first heat exchanger, reducing the amount flowing to the second heat exchanger, thereby achieving a more even distribution of refrigerant and improving the efficiency of the first heat exchanger. Furthermore, by manually adjusting the angles of the first and second bellows, the refrigerant can be evenly distributed between the first and second heat exchangers, reducing the overall assembly's maintenance difficulty and cost.

[0024] This utility model also provides an air conditioning unit, including a compressor and the aforementioned refrigerant distribution structure. By adjusting the first corrugated pipe and the second corrugated pipe, the connection angle between the inlet of the first heat exchanger and the first connecting pipe is changed, so that the flow direction of the refrigerant is biased towards the first heat exchanger, making the amount of refrigerant entering the first heat exchanger and the second heat exchanger equal, thereby improving the working efficiency of the first heat exchanger and the second heat exchanger, thus maintaining a high level of energy efficiency of the air conditioning unit and reducing energy waste. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the refrigerant distribution structure provided in this embodiment;

[0026] Figure 2 This is a schematic diagram of the refrigerant flow principle of the air conditioning unit provided in this embodiment.

[0027] In the picture:

[0028] 1. Connecting pipe assembly; 11. First connecting pipe; 12. Second connecting pipe; 13. Third connecting pipe; 2. Corrugated pipe assembly; 21. First corrugated pipe; 22. Second corrugated pipe; 23. Third corrugated pipe; 3. Heat exchanger assembly; 4. Electronic expansion valve; 5. Compressor; 6. T-connector; 7. Liquid receiver; 8. Gas-liquid separator. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the drawings, not all components.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] This embodiment provides a refrigerant distribution structure that, through manual adjustment, solves the problem of uneven refrigerant distribution caused by misaligned T-joint welding due to production errors. This achieves the effect of evenly distributing the refrigerant between two unbalanced heat exchangers, thereby improving the working efficiency of the heat exchangers.

[0034] Specifically, such as Figures 1 to 2As shown, a refrigerant distribution structure is used to distribute refrigerant from a compressor 5. The refrigerant distribution structure includes a connecting pipe assembly 1, a bellows assembly 2, and a heat exchanger assembly 3. The connecting pipe assembly 1 includes a first connecting pipe 11, a second connecting pipe 12, and a third connecting pipe 13 that are interconnected. One end of the first connecting pipe 11 is connected to the outlet of the compressor 5. The bellows assembly 2 includes a first bellows 21 and a second bellows 22. One end of the first bellows 21 is connected to one end of the second connecting pipe 12, and one end of the second bellows 22 is connected to one end of the third connecting pipe 13. The heat exchanger assembly 3 includes a first heat exchanger and a second heat exchanger. The pipe wall at the inlet of the first heat exchanger is welded to the pipe wall at the other end of the first bellows 21, and the pipe wall at the inlet of the second heat exchanger is welded to the pipe wall at the other end of the second bellows 22.

[0035] After the second connecting pipe 12 is welded to the first heat exchanger and the third connecting pipe 13 is welded to the second heat exchanger, the refrigerant flows from the compressor 5 through the first connecting pipe 11 and is then divided into two by the second connecting pipe 12 and the third connecting pipe 13. When less refrigerant flows to the first heat exchanger, the angles of the first corrugated pipe 21 and the second corrugated pipe 22 are adjusted to change the connection angle between the inlet of the first heat exchanger and the second connecting pipe 12, and the connection angle between the inlet of the second heat exchanger and the third connecting pipe 13. This causes the refrigerant flow to be biased towards the first heat exchanger, reducing the amount of refrigerant flowing to the second heat exchanger, thereby achieving the effect of evenly distributing the refrigerant and improving the working efficiency of the first heat exchanger. When the resistance of the heat exchanger changes due to dirt or blockage in the first or second heat exchanger or other reasons, the angles of the first corrugated pipe 21 and the second corrugated pipe 22 can be manually adjusted to achieve even distribution of the refrigerant between the first and second heat exchangers, reducing maintenance difficulty and costs.

[0036] Furthermore, the refrigerant distribution structure also includes an electronic expansion valve 4. The inlet of the electronic expansion valve 4 is connected to the outlet of the compressor 5, and the outlet of the electronic expansion valve 4 is connected to one end of the first connecting pipe 11. By regulating the refrigerant entering the first connecting pipe 11 through the electronic expansion valve 4, and after adjusting the first bellows 21 and the second bellows 22, the refrigerant flow rate entering the second connecting pipe 12 and the third connecting pipe 13 is kept relatively consistent.

[0037] Optionally, the corrugated pipe assembly 2 further includes a third corrugated pipe 23. One end of the third corrugated pipe 23 is connected to the outlet of the electronic expansion valve 4, and the other end of the third corrugated pipe 23 is connected to one end of the first connecting pipe 11. This allows for better adjustment of the flow branch position at the connection between the second connecting pipe 12 and the third connecting pipe 13. Manual adjustment of the third corrugated pipe 23 can change the angle with the straight section of the first connecting pipe 11, further improving the convenience of adjusting the refrigerant flow direction. In other embodiments, the first connecting pipe 11 can be directly configured as a corrugated pipe assembly.

[0038] Furthermore, to improve the corrosion resistance of the bellows assembly 2, prevent refrigerant damage to the bellows assembly 2, and extend the service life of the refrigerant distribution structure, the first bellows 21, the second bellows 22, and the third bellows 23 are all metal bellows. In this embodiment, the first bellows 21, the second bellows 22, and the third bellows 23 are all copper bellows; in other embodiments, the first bellows 21, the second bellows 22, and the third bellows 23 are all stainless steel bellows.

[0039] Optionally, to improve the corrosion resistance of the connecting pipe assembly 1, prevent damage to the connecting pipe assembly 1 by the refrigerant, and extend the service life of the refrigerant distribution structure, the first connecting pipe 11, the second connecting pipe 12, and the third connecting pipe 13 are all metal products. In this embodiment, the first connecting pipe 11, the second connecting pipe 12, and the third connecting pipe 13 are all copper pipes; in other embodiments, the first connecting pipe 11, the second connecting pipe 12, and the third connecting pipe 13 are all stainless steel pipes.

[0040] Optionally, the wall of the second connecting pipe 12 is fixedly connected to the wall of the first corrugated pipe 21, the wall of the third connecting pipe 13 is fixedly connected to the wall of the second corrugated pipe 22, and the wall of the first connecting pipe 11 is fixedly connected to the wall of the third corrugated pipe 23. In this embodiment, the wall of the second connecting pipe 12 is welded to the wall of the first corrugated pipe 21; in other embodiments, the second connecting pipe 12 and the first corrugated pipe 21 are integrally formed. In this embodiment, the wall of the third connecting pipe 13 is welded to the wall of the second corrugated pipe 22; in other embodiments, the third connecting pipe 13 and the second corrugated pipe 22 are integrally formed. In this embodiment, the wall of the first connecting pipe 11 is welded to the wall of the third corrugated pipe 23; in other embodiments, the first connecting pipe 11 and the third corrugated pipe 23 are integrally formed.

[0041] Optionally, to increase the heat transfer area, enhance fluid turbulence, and reduce maintenance costs, the first and second heat exchangers are finned heat exchangers. In another embodiment, the first heat exchanger is a finned heat exchanger, or the second heat exchanger is a finned heat exchanger.

[0042] Optionally, the entire connecting pipe assembly 1 is Y-shaped, with the first connecting pipe 11, the second connecting pipe 12, and the third connecting pipe 13 interconnected, making the refrigerant flow smoother.

[0043] This embodiment also provides an air conditioning unit to avoid the problem of uneven refrigerant distribution caused by misaligned T-joint welding due to production errors. During online testing of the unit, manual adjustment can be used to achieve even refrigerant distribution, thereby improving the working efficiency of the heat exchanger and reducing energy waste.

[0044] Specifically, such as Figure 2As shown, an air conditioning unit includes a compressor 5 and the aforementioned refrigerant distribution structure. One end of the first connecting pipe 11 is connected to the outlet of the compressor 5. By adjusting the first corrugated pipe 21 and the second corrugated pipe 22, the connection angle between the inlet of the first heat exchanger and the first connecting pipe 11 is changed, causing the refrigerant flow direction to be biased towards the first heat exchanger. This ensures that the amount of refrigerant entering the first and second heat exchangers is equal, improving the working efficiency of the first and second heat exchangers. Consequently, the energy efficiency of the air conditioning unit is maintained at a high level, reducing energy waste.

[0045] Furthermore, the air conditioning unit also includes a three-way pipe 6, which has a first inlet, a second inlet, and an outlet. The first inlet is connected to the outlet of the first heat exchanger, the second inlet is connected to the outlet of the second heat exchanger, and the outlet of the three-way pipe 6 is connected to the air inlet of the compressor 5 to realize the refrigerant recirculation.

[0046] like Figure 2 As shown, in the air conditioning unit, the refrigerant flow path is as follows (arrows indicate the refrigerant flow direction): the refrigerant flowing out of the compressor 5 outlet passes through the liquid receiver 7, and enters the third bellows 23 through the regulation of the refrigerant flow by the electronic expansion valve 4. After the regulation of the first bellows 21 and the second bellows 22, the refrigerant is evenly distributed to the first heat exchanger and the second heat exchanger. Then, it converges in the three-way pipe 6, passes through the gas-liquid separator 8, and returns to the compressor 5, completing one working cycle.

[0047] The refrigerant distribution structure, installation process, and operating mechanism of the air conditioning unit provided in this embodiment are as follows:

[0048] The air conditioning unit provided in this embodiment is not significantly different from existing air conditioning units in terms of assembly process. When welding the Y-type connecting pipe assembly 1 with the copper corrugated pipe assembly 2, no special tooling is required, saving on tooling fabrication. In the air conditioning unit provided in this embodiment, the traditional Y-type copper connecting pipe assembly 1 is replaced with a Y-type connecting pipe assembly 1 with the copper corrugated pipe assembly 2. After welding, the angle of the Y-type connecting pipe assembly 1 can still be manually adjusted. After welding, the angles of the first corrugated pipe 21, the second corrugated pipe 22, and the third corrugated pipe 23 can be manually adjusted to direct the refrigerant towards the second connecting pipe 12 or the third connecting pipe 13, thereby regulating and distributing the refrigerant flow.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A refrigerant distribution structure, characterized in that, The refrigerant distribution structure is used to distribute refrigerant from the compressor (5), and the refrigerant distribution structure includes: The connecting pipe assembly (1) includes a first connecting pipe (11), a second connecting pipe (12) and a third connecting pipe (13) that are interconnected. One end of the first connecting pipe (11) is connected to the air outlet of the compressor (5). A bellows assembly (2) includes a first bellows (21) and a second bellows (22), one end of the first bellows (21) is connected to one end of the second connecting pipe (12), and one end of the second bellows (22) is connected to one end of the third connecting pipe (13). The heat exchanger assembly (3) includes a first heat exchanger and a second heat exchanger. The pipe wall at the inlet of the first heat exchanger is welded to the pipe wall at the other end of the first corrugated pipe (21), and the pipe wall at the inlet of the second heat exchanger is welded to the pipe wall at the other end of the second corrugated pipe (22).

2. The refrigerant distribution structure according to claim 1, characterized in that, The refrigerant distribution structure also includes an electronic expansion valve (4), the inlet of which is connected to the outlet of the compressor (5), and the outlet of which is connected to one end of the first connecting pipe (11).

3. The refrigerant distribution structure according to claim 2, characterized in that, The bellows assembly (2) further includes a third bellows (23), one end of which is connected to the outlet of the electronic expansion valve (4), and the other end of which is connected to one end of the first connecting pipe (11).

4. The refrigerant distribution structure according to claim 3, characterized in that, The first corrugated pipe (21), the second corrugated pipe (22) and the third corrugated pipe (23) are all metal corrugated pipes.

5. The refrigerant distribution structure according to claim 4, characterized in that, The first connecting pipe (11), the second connecting pipe (12) and the third connecting pipe (13) are all metal products.

6. The refrigerant distribution structure according to claim 5, characterized in that, The wall of the second connecting pipe (12) is fixedly connected to the wall of the first corrugated pipe (21), the wall of the third connecting pipe (13) is fixedly connected to the wall of the second corrugated pipe (22), and the wall of the first connecting pipe (11) is fixedly connected to the wall of the third corrugated pipe (23).

7. The refrigerant distribution structure according to claim 1, characterized in that, The first heat exchanger and / or the second heat exchanger are finned heat exchangers.

8. The refrigerant distribution structure according to claim 1, characterized in that, The entire connecting pipe assembly (1) is Y-shaped.

9. An air conditioning unit, characterized in that, Includes a compressor (5) and a refrigerant distribution structure as described in any one of claims 1-8, wherein one end of the first connecting pipe (11) is connected to the outlet of the compressor (5).

10. The air conditioning unit according to claim 9, characterized in that, The air conditioning unit also includes a three-way pipe (6), which has a first inlet, a second inlet and an outlet. The first inlet is connected to the outlet of the first heat exchanger, the second inlet is connected to the outlet of the second heat exchanger, and the outlet of the three-way pipe (6) is connected to the air inlet of the compressor (5).

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