Parallel flow variable shunting heat exchanger and air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and discloses a parallel flow variable shunting heat exchanger and an air conditioning system. The parallel flow variable split-flow heat exchanger comprises a gas collecting pipe, a gas inlet pipe and a gas outlet pipe, a liquid pipe valve component is arranged in the liquid collecting pipe; the plurality of parallel flow heat exchange tubes are communicated between the gas collecting tube and the liquid collecting tube, the gas tube valve component comprises a gas valve conduction inflow end and a gas valve conduction outflow end, the liquid tube valve component comprises a liquid valve conduction inflow end and a liquid valve conduction outflow end, and the plurality of parallel flow heat exchange tubes have different communication modes in different operation modes. According to the parallel flow variable split-flow heat exchanger, the operation efficiency in different operation modes is improved at the same time. The utility model further discloses an air conditioning system.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, for example, to a parallel flow variable diversion heat exchanger and an air conditioning system. Background Art

[0002] A heat exchanger is an important component of an air conditioning system, and the heat exchange capacity of the heat exchanger directly affects the cooling or heating efficiency of the air conditioning system. Taking the outdoor heat exchanger as an example, when the air conditioning system operates in the heating mode, when the multiple heat exchange pipelines of the outdoor heat exchanger are in a parallel connection state, the heating performance of the air conditioning system is better; when the air conditioning system operates in the cooling mode, when the multiple heat exchange pipelines of the outdoor heat exchanger are in a series connection state, the cooling performance of the air conditioning system is better.

[0003] A parallel flow heat exchanger is a type of heat exchanger and is generally used as a condenser in the field of refrigeration and air conditioning. Compared with a finned tube heat exchanger, a parallel flow heat exchanger is usually made of all-aluminum material and has the advantages of light weight, high heat exchange efficiency, less refrigerant charge, and compact structure. The heat exchange core part of a parallel flow heat exchanger usually consists of multiple parallel porous flat tubes, corrugated fins located in the middle of the parallel flat tubes, and headers located at both ends of the flat tubes. When the equivalent diameter of the pores in the porous flat tubes belongs to the microchannel size range, this parallel flow heat exchanger can also be called a parallel flow microchannel heat exchanger.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The connection method of multiple parallel flow heat exchange tubes of the existing parallel flow heat exchanger is relatively single and cannot improve the operation efficiency in both the cooling mode and the heating mode at the same time.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Utility Model Content

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0008] The embodiments of the present disclosure provide a parallel flow variable diversion heat exchanger and an air conditioning system, so that the parallel flow heat exchanger has different refrigerant flow path routes in different operating modes, and at the same time improves the operation efficiency of the air conditioning system in both the heating mode and the cooling mode.

[0009] An embodiment of the present disclosure provides a parallel-flow variable-diversion heat exchanger, including: a gas collector, inside which a gas pipe valve component is provided; a liquid collector, inside which a liquid pipe valve component is provided; and a plurality of parallel-flow heat exchange pipes, which are connected between the gas collector and the liquid collector. Wherein, the gas pipe valve component includes a gas valve conducting inlet end and a gas valve conducting outlet end, and the liquid pipe valve component includes a liquid valve conducting inlet end and a liquid valve conducting outlet end, so that the plurality of parallel-flow heat exchange pipes have different connection modes under different operating modes.

[0010] In some alternative embodiments, a first gas pipe valve component and a second gas pipe valve component are provided inside the gas collector. Wherein, the first gas pipe valve component is arranged above the second gas pipe valve component, and the conducting directions of the first gas pipe valve component and the second gas pipe valve component are the same.

[0011] In some alternative embodiments, the plurality of parallel-flow heat exchange pipes include an adjacent Nth parallel-flow heat exchange pipe and an (N - 1)th parallel-flow heat exchange pipe. Wherein, the Nth parallel-flow heat exchange pipe includes a first refrigerant inlet and outlet and a second refrigerant inlet and outlet, the (N - 1)th parallel-flow heat exchange pipe includes a third refrigerant inlet and outlet, and the first refrigerant inlet and outlet and the third refrigerant inlet and outlet are arranged between the first gas pipe valve component and the second gas pipe valve component.

[0012] In some alternative embodiments, the first gas pipe valve component includes a first solenoid valve, and the second gas pipe valve component includes a first check valve.

[0013] In some alternative embodiments, a first liquid pipe valve component and a second liquid pipe valve component are provided inside the liquid collector. Wherein, the first liquid pipe valve component is arranged above the second liquid pipe valve component, and the conducting directions of the first liquid pipe valve component, the second liquid pipe valve component, the first gas pipe valve component and the second gas pipe valve component are the same.

[0014] In some alternative embodiments, the plurality of parallel-flow heat exchange pipes include an (N + 1)th parallel-flow heat exchange pipe, and the Nth parallel-flow heat exchange pipe and the (N + 1)th parallel-flow heat exchange pipe are arranged adjacent to each other. Wherein, the (N + 1)th parallel-flow heat exchange pipe includes a fourth refrigerant inlet and outlet, and the second refrigerant inlet and outlet and the fourth refrigerant inlet and outlet are arranged between the first liquid pipe valve component and the second liquid pipe valve component.

[0015] In some alternative embodiments, the first liquid pipe valve component includes a second solenoid valve, and the second liquid pipe valve component includes a second check valve.

[0016] In some alternative embodiments, the parallel flow variable diversion heat exchanger further includes a first refrigerant inlet / outlet pipe, and the first refrigerant inlet / outlet pipe is connected to one end of the gas collecting pipe. The plurality of parallel flow heat exchange pipes include a first parallel flow heat exchange pipe close to the first refrigerant inlet / outlet pipe, and a second parallel flow heat exchange pipe close to the first parallel flow heat exchange pipe. Wherein, a partition is provided in the gas collecting pipe and is located between the first parallel flow heat exchange pipe and the second parallel flow heat exchange pipe.

[0017] In some alternative embodiments, the parallel flow variable diversion heat exchanger further includes: a second refrigerant inlet / outlet pipe, wherein the second refrigerant inlet / outlet pipe is provided at the other end of the gas collecting pipe; or, the second refrigerant inlet / outlet pipe is provided in the liquid collecting pipe.

[0018] The embodiment of the present disclosure also provides an air conditioning system including the parallel flow variable diversion heat exchanger as described above.

[0019] The parallel flow variable diversion heat exchanger and the air conditioning system provided by the embodiment of the present disclosure can achieve the following technical effects:

[0020] The embodiment of the present disclosure provides a parallel flow variable diversion heat exchanger, which includes a gas collecting pipe, a liquid collecting pipe and a plurality of parallel flow heat exchange pipes. A gas pipe valve component is provided inside the gas collecting pipe, a liquid pipe valve component is provided inside the liquid collecting pipe, and the plurality of parallel flow heat exchange pipes are communicated between the gas collecting pipe and the liquid collecting pipe. Wherein, the gas pipe valve component includes a gas valve conducting inlet end and a gas valve conducting outlet end, and the liquid pipe valve component includes a liquid valve conducting inlet end and a liquid valve conducting outlet end, so that the plurality of parallel flow heat exchange pipes have different connection modes under different operating modes.

[0021] The gas pipe valve component provided in the gas collecting pipe is a one-way conducting component, and the liquid pipe valve component provided in the liquid collecting pipe is also a one-way conducting component. When the parallel flow variable diversion heat exchanger is used as an evaporator, both the gas pipe valve component and the liquid pipe valve component are conducted, and at least some of the plurality of parallel flow heat exchange pipes are in a parallel connection state; when the parallel flow variable diversion heat exchanger is used as a condenser, both the gas pipe valve component and the liquid pipe valve component are closed, and at least some of the plurality of parallel flow heat exchange pipes are in a series connection state.

[0022] It can be seen that for the parallel flow variable diversion heat exchanger provided by the embodiment of the present disclosure, by respectively providing a gas pipe valve component and a liquid pipe valve component in the gas collecting pipe and the liquid collecting pipe, at least some of the plurality of parallel flow heat exchange pipes have different connection modes under different operating modes, thereby providing different flow paths for the refrigerant. In this way, the operating efficiency of the air conditioning system in both the heating mode and the cooling mode is improved simultaneously.

[0023] The above general description and the following description are only exemplary and explanatory and are not used to limit the present application. Description of the Drawings

[0024] One or more embodiments are illustrated by way of example with reference to the corresponding accompanying drawings, which do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and wherein:

[0025] Figure 1 is a schematic structural diagram of a parallel flow variable split heat exchanger provided by an embodiment of the present disclosure;

[0026] Figure 2 is a schematic structural diagram of another parallel flow variable split heat exchanger provided by an embodiment of the present disclosure;

[0027] Figure 3 is a schematic structural diagram of another parallel flow variable split heat exchanger provided by an embodiment of the present disclosure;

[0028] Figure 4 is a schematic diagram of refrigerant flow when a parallel flow variable split heat exchanger provided by an embodiment of the present disclosure is used as a condenser;

[0029] Figure 5 is a schematic diagram of refrigerant flow when a parallel flow variable split heat exchanger provided by an embodiment of the present disclosure is used as an evaporator;

[0030] Figure 6 is a schematic structural diagram of another parallel flow variable split heat exchanger provided by an embodiment of the present disclosure;

[0031] Figure 7 is a schematic diagram of refrigerant flow when another parallel flow variable split heat exchanger provided by an embodiment of the present disclosure is used as a condenser;

[0032] Figure 8 is a schematic diagram of refrigerant flow when another parallel flow variable split heat exchanger provided by an embodiment of the present disclosure is used as an evaporator;

[0033] Figure 9 is a schematic structural diagram of another parallel flow variable split heat exchanger provided by an embodiment of the present disclosure;

[0034] Figure 10 is a schematic diagram of refrigerant flow when another parallel flow variable split heat exchanger provided by an embodiment of the present disclosure is used as a condenser;

[0035] Figure 11 is a schematic diagram of refrigerant flow when another parallel flow variable split heat exchanger provided by an embodiment of the present disclosure is used as an evaporator;

[0036] Figure 12 is a schematic structural diagram of a first gas pipe valve component provided by an embodiment of the present disclosure;

[0037] Figure 13 It is a schematic diagram of the opening of another first air pipe valve component provided by an embodiment of the present disclosure;

[0038] Figure 14 It is a schematic structural diagram of another first air pipe valve component provided by an embodiment of the present disclosure.

[0039] Reference numerals:

[0040] 100: Gas collecting pipe; 101: First air pipe valve component; 102: Second air pipe valve component; 103: Partition board;

[0041] 200: Liquid collecting pipe; 201: First liquid pipe valve component; 202: Second liquid pipe valve component;

[0042] 300: Parallel flow heat exchange pipe; 301: First parallel flow heat exchange pipe; 302: Second parallel flow heat exchange pipe; 303: (N - 1)th parallel flow heat exchange pipe; 304: Nth parallel flow heat exchange pipe; 305: (N + 1)th parallel flow heat exchange pipe; 3041: First refrigerant inlet / outlet; 3042: Second refrigerant inlet / outlet; 3031: Third refrigerant inlet / outlet; 3051: Fourth refrigerant inlet / outlet;

[0043] 401: First refrigerant inlet / outlet pipe; 402: Second refrigerant inlet / outlet pipe;

[0044] 501: Valve seat; 502: Communication hole; 503: Valve housing; 504: Valve core; 505: Guide rail; 506: Fixed seat; 507: Cantilever. Detailed implementation manners

[0045] In order to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and explanation, and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, multiple details are provided to fully understand the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner.

[0046] The terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the embodiments of the present disclosure are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of the present disclosure here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0047] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0048] In addition, the terms "arranged", "connected", "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0049] Unless otherwise specified, the term "plurality" means two or more.

[0050] The term "and / or" is a description of the association relationship of an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0051] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0052] The embodiments of the present disclosure provide a parallel-flow variable-shunt heat exchanger.

[0053] Optionally, the parallel-flow variable-shunt heat exchanger includes a gas collector 100, a liquid collector 200, and a plurality of parallel-flow heat exchange tubes 300. A gas pipe valve component is arranged inside the gas collector 100, a liquid pipe valve component is arranged inside the liquid collector 200, and the plurality of parallel-flow heat exchange tubes 300 are communicated between the gas collector 100 and the liquid collector 200. Among them, the gas pipe valve component includes a gas valve conducting inflow end and a gas valve conducting outflow end, and the liquid pipe valve component includes a liquid valve conducting inflow end and a liquid valve conducting outflow end, so that the plurality of parallel-flow heat exchange tubes 300 have different connection modes in different operating modes.

[0054] The gas pipe valve component disposed inside the gas collecting pipe 100 and the liquid pipe valve component disposed inside the liquid collecting pipe 200 are both one-way conduction components. When the parallel flow variable split heat exchanger serves as an evaporator, both the gas pipe valve component and the liquid pipe valve component are conducted; when the parallel flow variable split heat exchanger serves as a condenser, both the gas pipe valve component and the liquid pipe valve component are closed, so that at least some of the parallel flow heat exchange pipes 300 among the multiple parallel flow heat exchange pipes 300 can have different connection modes in different operating modes.

[0055] Optionally, the gas pipe valve component is embedded inside the gas collecting pipe 100, so that the gas collecting pipe 100 is generally linear; similarly, the liquid pipe valve component is embedded inside the liquid collecting pipe 200, so that the liquid collecting pipe 200 is also generally linear, which is beneficial to the miniaturization of the parallel flow variable split heat exchanger.

[0056] Optionally, the parallel flow heat exchange pipe is a microchannel flat pipe.

[0057] Optionally, a first gas pipe valve component 101 and a second gas pipe valve component 102 are disposed inside the gas collecting pipe 100, wherein the first gas pipe valve component 101 is disposed above the second gas pipe valve component 102, and the conduction directions of the first gas pipe valve component 101 and the second gas pipe valve component 102 are the same.

[0058] The conduction directions of the first gas pipe valve component 101 and the second gas pipe valve component 102 disposed inside the gas collecting pipe 100 are the same. Optionally, the first gas pipe valve component 101 and the second gas pipe valve component 102 are spaced apart, as Figures 1 to 11 shown. Optionally, the multiple parallel flow heat exchange pipes include the adjacent Nth parallel flow heat exchange pipe 304 and the (N - 1)th parallel flow heat exchange pipe 303, wherein the Nth parallel flow heat exchange pipe 304 includes a first refrigerant inlet / outlet 3041 and a second refrigerant inlet / outlet 3042, the (N - 1)th parallel flow heat exchange pipe 303 includes a third refrigerant inlet / outlet 3031, and the first refrigerant inlet / outlet 3041 and the third refrigerant inlet / outlet 3041 are disposed between the first gas pipe valve component 101 and the second gas pipe valve component 102.

[0059] Optionally, the first gas pipe valve component 101 includes a first solenoid valve, and the second gas pipe valve component 102 includes a first check valve.

[0060] When the parallel-flow variable-dividing heat exchanger serves as an evaporator, both the first gas pipe valve component 101 and the second gas pipe valve component 102 in the gas collecting pipe 100 are in a conducting state. When the refrigerant in the parallel-flow heat exchange pipes 300 arranged at the lower part flows into the gas collecting pipe 100, after overcoming the resistance brought by the second gas pipe valve component 102, it still needs to continue to overcome the resistance brought by the first gas pipe valve component 101 before it can flow out of the gas collecting pipe 100. In the embodiment of the present disclosure, the first gas pipe valve component 101 is a first electromagnetic valve, which can be controlled to open instead of being opened under the flow impact force of the refrigerant. In this way, the pressure loss of the first gas pipe valve component 101 to the refrigerant is reduced.

[0061] Optionally, a first liquid pipe valve component 201 and a second liquid pipe valve component 202 are arranged inside the liquid collecting pipe 200. Among them, the first liquid pipe valve component 201 is arranged above the second liquid pipe valve component 202, and the conducting directions of the first liquid pipe valve component 201, the second liquid pipe valve component 202, the first gas pipe valve component 101 and the second gas pipe valve component 102 are the same.

[0062] The conducting directions of the first liquid pipe valve component 201 and the second liquid pipe valve component 202 arranged in the liquid collecting pipe 200 are the same. Optionally, the first liquid pipe valve component 201 and the second liquid pipe valve component 202 are arranged at intervals, as Figures 1 to 11 shown.

[0063] Optionally, the multiple parallel-flow heat exchange pipes include the (N + 1)th parallel-flow heat exchange pipe 305, and the Nth parallel-flow heat exchange pipe 304 and the (N + 1)th parallel-flow heat exchange pipe 305 are arranged adjacent to each other. Among them, the (N + 1)th parallel-flow heat exchange pipe 305 includes a fourth refrigerant inlet / outlet 3051, and the second refrigerant inlet / outlet 3042 and the fourth refrigerant inlet / outlet 3051 are arranged between the first liquid pipe valve component 201 and the second liquid pipe valve component 202.

[0064] The multiple liquid pipe valve components and the multiple gas pipe valve components are arranged alternately, realizing the adjustment of the connection mode of the multiple parallel-flow heat exchange pipes 300.

[0065] Optionally, the first liquid pipe valve component 201 includes a second electromagnetic valve, and the second liquid pipe valve component 202 includes a second one-way valve.

[0066] Similarly, when the parallel flow variable split heat exchanger serves as an evaporator, both the first liquid pipe valve component 201 and the second liquid pipe valve component 202 in the liquid collecting pipe 200 are in a conducting state. A part of the refrigerant flowing in the liquid collecting pipe 200 needs to continue to overcome the resistance brought by the first liquid pipe valve component 201 after overcoming the resistance brought by the second liquid pipe valve component 202 before it can flow into the parallel flow heat exchange pipes 300 located in the upper part. In the embodiment of the present disclosure, the first liquid pipe valve component 201 is a first solenoid valve, which can be controlled to open, rather than opening under the flow impact force of the refrigerant. In this way, the pressure loss of the first liquid pipe valve component 201 to the refrigerant is reduced.

[0067] Optionally, the parallel flow variable split heat exchanger further includes a first refrigerant inlet / outlet pipe 401, and the first refrigerant inlet / outlet pipe 401 is connected to one end of the gas collecting pipe 100. The multiple parallel flow heat exchange pipes 300 include a first parallel flow heat exchange pipe 301 close to the first refrigerant inlet / outlet pipe 401, and a second parallel flow heat exchange pipe 302 close to the first parallel flow heat exchange pipe 301. Among them, a partition 103 is provided in the gas collecting pipe 100 and is located between the first parallel flow heat exchange pipe 301 and the second parallel flow heat exchange pipe 302.

[0068] As Figures 1 to 8 shown, a partition 103 is also provided in the gas collecting pipe 100, and the partition 103 is located between the adjacent first parallel flow heat exchange pipe 301 and the second parallel flow heat exchange pipe 302.

[0069] Optionally, the partition 103 is provided at the upper part of the gas collecting pipe 100. When the parallel flow variable split heat exchanger serves as a condenser, through the setting of the partition 103, and the first gas pipe valve component 101, the second gas pipe valve component 102, the first liquid pipe valve component 201 and the second liquid pipe valve component 202 are all closed. At this time, the multiple parallel flow heat exchange pipes 300 are connected in series. The refrigerant flowing in from the first refrigerant inlet / outlet pipe 401 flows through the multiple parallel flow heat exchange pipes 300 in sequence and then flows out from the second refrigerant inlet / outlet pipe 402, as Figure 4 shown. Optionally, the partition 103 can also be provided at the lower part of the gas collecting pipe 100. When the parallel flow variable split heat exchanger serves as a condenser, the flow path of the refrigerant is as Figure 7 shown.

[0070] When the partition 103 is provided at the upper part of the gas collecting pipe 100 and the parallel flow variable split heat exchanger serves as an evaporator, the first gas pipe valve component 101, the second gas pipe valve component 102, the first liquid pipe valve component 201 and the second liquid pipe valve component 202 are all in a conducting state. At this time, the other parallel flow heat exchange pipes 300 except the first parallel flow heat exchange pipe 301 are connected in parallel. The refrigerant flowing in from the second refrigerant inlet / outlet pipe 402 flows through the multiple parallel flow heat exchange pipes 300 respectively, then passes through the first parallel flow heat exchange pipe 301, and finally flows out through the first refrigerant inlet / outlet pipe 401, asFigure 5 As shown. Optionally, the partition plate 103 can also be arranged at the lower part of the header pipe 100. When the parallel flow variable shunt heat exchanger is used as an evaporator, the flow path of the refrigerant is as Figure 8 shown.

[0071] Optionally, the first refrigerant inlet / outlet pipe 401 and the second refrigerant inlet / outlet pipe 402 can both be arranged on the header pipe 100, so that the parallel flow variable shunt heat exchanger can realize the same-side inlet and outlet, as Figures 1 to 8 shown. Optionally, the second refrigerant inlet / outlet pipe 402 can also be arranged on the liquid collecting pipe 200, so that the parallel flow variable shunt heat exchanger can realize the opposite-side inlet and outlet, as Figures 9 to 11 shown.

[0072] The embodiment of the present disclosure further provides an embedded gas pipe valve component or liquid pipe valve component.

[0073] The first gas pipe valve component 101 includes a valve seat 501 and a valve housing 503. The valve seat 501 is located in the header pipe 100. The valve seat 501 is configured with a communication hole 502, and the communication hole 502 can conduct the header pipe 100; the valve housing 503 is located on the valve seat 501 and is movably located at the communication hole 502. The maximum cross-sectional area of the valve seat 501 is larger than the cross-sectional area of the communication hole 502, and is used to open or close the communication hole 502.

[0074] In the embodiment of the present disclosure, the valve seat 501 of the first gas pipe valve component 101 is located in the header pipe 100, and the valve seat 501 is connected to the side wall of the header pipe 100. In this way, the valve seat 501 isolates the header pipe 100 into upper and lower chambers. The valve seat 501 is provided with a communication hole 502, and the valve housing 503 is movably arranged at the communication hole 502, and the valve housing 503 is located on the valve seat 501. In this way, when the refrigerant flows from the upper chamber to the lower chamber, the valve housing 503 moves to and blocks at the communication hole 502. That is, when flowing from the upper chamber to the lower chamber, the first gas pipe valve component 101 is closed. When the refrigerant flows from the lower chamber to the upper chamber, the refrigerant pushes the valve housing 503, so that the valve housing 503 moves in a direction away from the valve seat 501, and further the valve housing 503 opens the communication hole 502, and the first gas pipe valve component 101 is conducted. In this way, the one-way conduction of the first gas pipe valve component 101 is realized.

[0075] Optionally, the wall surface of the valve housing facing the communication hole matches the wall surface of the communication hole. In this way, when the valve housing closes the communication hole, the valve housing can closely adhere to the side wall of the communication hole to achieve sealing. Optionally, one end of the valve housing 503 facing the valve seat 501 is a conical surface. When the valve housing 503 closes the communication hole 502, the conical surface of the valve housing 503 fits with the side wall of the communication hole 502. In this way, the connection between the valve housing 503 and the communication hole 502 can be sealed to avoid refrigerant leakage.

[0076] Optionally, the first tracheal valve component 101 further includes a valve core 504 and a guide rail 505. The valve core 504 is connected to the valve housing 503. The guide rail 505 is connected to the gas collecting pipe 100, is fixedly arranged in the communication hole 502, and extends along the axial direction of the gas collecting pipe 100. The valve core 504 is movably arranged on the guide rail 505. When the valve core 504 moves along the guide rail towards the direction close to the communication hole 502, the valve housing 503 abuts against the valve seat 501 to close the communication hole 502. When the valve core 504 moves along the guide rail towards the direction away from the communication hole 502, the valve housing 503 is separated from the valve seat 501 to open the communication hole 502.

[0077] In the embodiment of the present disclosure, the valve core 504 is connected to the valve housing 503, and the valve core 504 can drive the valve housing 503 to move. The guide rail 505 is fixedly arranged on one side of the communication hole 502, and the valve core 504 can move along the guide rail 505. That is to say, the guide rail 505 plays a guiding role in the movement of the valve housing 503. When the refrigerant flows from the upper chamber to the lower chamber, the refrigerant applies a force to the valve core 504 to make the valve core 504 and the valve housing 503 move along the guide rail 505 towards the direction close to the valve seat 501, so that the valve housing 503 abuts against the valve seat 501 and closes the communication hole 502. As Figure 12 shown, when the refrigerant flows from the lower chamber to the upper chamber, the refrigerant applies a force to the valve housing 503 and the valve core 504 to make the valve core 504 move away from the valve seat 501, so that the valve housing 503 is separated from the valve seat 501, and then the communication hole 502 is opened, realizing the one-way conduction of the first tracheal valve component 101. Figure 13 The arrows in indicate the flow direction of the refrigerant when the first tracheal valve component 101 is conducting. In addition, the guide rail 505 can also limit the left and right movement of the valve housing 503, avoiding the impact sound generated by the left and right impact of the valve housing 503 on the gas collecting pipe 100.

[0078] Optionally, the valve core 504 is located at the center of the valve housing 503, and the guide rail 505 is correspondingly arranged with the valve core 504, so that the movement of the valve housing 503 is more stable and the valve housing 503 is prevented from shifting.

[0079] Optionally, the first tracheal valve component 101 further includes a fixing seat 506. The fixing seat 506 is connected to the gas collecting pipe 100, is located on the side of the guide rail 505 away from the valve seat 501, and is connected to the guide rail 505 for fixing the guide rail 505.

[0080] In the embodiment of the present disclosure, the fixing seat 506 is connected to the gas collecting pipe 100, so that the fixing seat 506 can fix the guide rail 505 to keep the guide rail 505 fixed, facilitating the movement of the valve core 504 along the guide rail 505.

[0081] Optionally, as Figure 14As shown, the fixing base 506 includes a plurality of cantilevers 507. The inner ends of the plurality of cantilevers 507 are connected to each other. The outer ends of the cantilevers 507 are connected to the side wall of the header. And the plurality of cantilevers 507 are arranged at intervals along the circumferential direction of the header 100. In this way, the fixing of the fixing base 506 can be achieved. With the plurality of cantilevers 507 arranged at intervals, the fixing base will not block the flow of the refrigerant.

[0082] Optionally, the valve housing 503 is located above the valve seat 501. The guide rail 505 extends in the up and down direction. The fixing base 506 is located above the valve housing 503. In this way, when the refrigerant flows from the upper chamber to the lower chamber, the valve housing 503 will naturally close the communication hole 502 under its own gravity, and the pressure exerted by the refrigerant will increase the reverse sealing performance. When the refrigerant flows from the lower chamber to the upper chamber, the upward impact force of the refrigerant is greater than the gravity of the valve housing 503, and the valve housing 503 will be lifted and opened, thereby realizing the normal flow of the refrigerant.

[0083] Optionally, the structures of the second gas pipe valve component 102, the first liquid pipe valve component 201 and / or the second liquid pipe valve component 202 are the same as that of the first gas pipe valve component 101.

[0084] The embodiment of the present disclosure also provides an air conditioning system. It includes the parallel flow variable diversion heat exchanger as described above.

[0085] Optionally, the air conditioning system provided by the embodiment of the present disclosure can be a small household air conditioning system or a larger commercial air conditioning system.

[0086] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations can vary. Parts and features of some embodiments can be included in or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A parallel flow variable split heat exchanger, characterized in that: include: An air collecting pipe, wherein an air pipe valve component is arranged inside; A liquid collecting pipe, wherein a liquid pipe valve component is arranged inside; Multiple parallel flow heat exchange tubes are connected between the gas collecting pipe and the liquid collecting pipe. Among them, the gas pipe valve component includes an gas valve conduction inlet end and an gas valve conduction outflow end, and the liquid pipe valve component includes a liquid valve conduction inlet end and a liquid valve conduction outflow end, so that multiple parallel flow heat exchange tubes have different connection methods under different operating modes.

2. The parallel flow variable split heat exchanger according to claim 1, characterized in that: The first air pipe valve component and the second air pipe valve component are arranged inside the air collecting pipe. The first tracheal valve component is arranged on the upper part of the second tracheal valve component, and the first tracheal valve component and the second tracheal valve component have the same conducting direction.

3. The parallel flow variable split heat exchanger according to claim 2, characterized in that: The plurality of parallel flow heat exchange tubes include adjacent Nth parallel flow heat exchange tubes and N-1th parallel flow heat exchange tubes. Among them, the Nth parallel flow heat exchange tube includes a first refrigerant inlet and outlet and a second refrigerant inlet and outlet, the N-1th parallel flow heat exchange tube includes a third refrigerant inlet and outlet, and the first refrigerant inlet and outlet and the third refrigerant inlet and outlet are arranged between the first air pipe valve component and the second air pipe valve component.

4. The parallel flow variable split heat exchanger according to claim 3, characterized in that: The first tracheal valve component includes a first solenoid valve, and the second tracheal valve component includes a first one-way valve.

5. The parallel flow variable split heat exchanger according to claim 4, characterized in that: The first liquid pipe valve component and the second liquid pipe valve component are arranged inside the liquid collecting pipe. The first liquid pipe valve component is arranged on the upper part of the second liquid pipe valve component, and the first liquid pipe valve component, the second liquid pipe valve component, the first air pipe valve component and the second air pipe valve component have the same conducting direction.

6. The parallel flow variable split heat exchanger according to claim 5, characterized in that: The plurality of parallel flow heat exchange tubes include an N+1th parallel flow heat exchange tube, and the Nth parallel flow heat exchange tube is disposed adjacent to the N+1th parallel flow heat exchange tube. The N+1th parallel flow heat exchange tube includes a fourth refrigerant inlet and outlet, and the second refrigerant inlet and outlet and the fourth refrigerant inlet and outlet are arranged between the first liquid pipe valve component and the second liquid pipe valve component.

7. The parallel flow variable split heat exchanger according to claim 6, characterized in that: The first liquid pipe valve member includes a second solenoid valve, and the second liquid pipe valve member includes a second check valve.

8. The parallel flow variable split heat exchanger according to any one of claims 1 to 7, characterized in that: It also includes a first refrigerant inlet and outlet pipe, and the first refrigerant inlet and outlet pipe is connected to one end of the gas collecting pipe. The plurality of parallel flow heat exchange tubes include a first parallel flow heat exchange tube close to the first refrigerant inlet and outlet tube, and a second parallel flow heat exchange tube close to the first parallel flow heat exchange tube, wherein: A partition is arranged in the gas collecting pipe and is located between the first parallel flow heat exchange tube and the second parallel flow heat exchange tube.

9. The parallel flow variable split heat exchanger according to claim 8, characterized in that: Also includes: The second refrigerant inlet and outlet pipe, wherein: The second refrigerant inlet and outlet pipe is arranged at the other end of the gas collecting pipe; or, The second refrigerant inlet and outlet pipe is arranged on the liquid collecting pipe.

10. An air conditioning system, characterized in that: It comprises the parallel flow variable split heat exchanger as described in any one of claims 1 to 9.

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