Variable shunting heat exchange module and air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and discloses a variable shunting heat exchange module and an air conditioning system. The variable split-flow heat exchange module comprises a first heat exchange module and a second heat exchange module, wherein the first heat exchange module comprises a first heat exchange pipe set and a first air pipe component communicated with the first heat exchange pipe set; the second heat exchange module comprises a second heat exchange pipe set and a second air pipe component communicating with the second heat exchange pipe set. And the gas collecting header pipe is communicated with the first gas pipe component and the second gas pipe component. Wherein the gas collecting main pipe is provided with a flow dividing element, the flow dividing element comprises a flow dividing main pipe, a first flow dividing branch pipe and a second flow dividing branch pipe, the first flow dividing branch pipe is communicated with a first gas inlet position of the first gas pipe component, and the second flow dividing branch pipe is communicated with a second gas inlet position of the second gas pipe component. According to the variable shunting heat exchange module provided by the invention, the uniformity of the refrigerant distribution quantity among the heat exchange modules is improved.

Description

Technical Field

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

[0002] Currently, an air conditioning system generally consists of a compressor, an outdoor heat exchanger, a throttling device, a four-way valve, and an indoor heat exchanger to form a refrigerant circulation loop, and the four-way valve is used to change the flow direction of the refrigerant in the refrigerant circulation loop, so as to realize the refrigeration function and the heating function of the air conditioning system respectively. When the outdoor heat exchanger is in the refrigeration flow direction, the refrigerant in its heat exchange tubes is in the high-temperature and high-pressure region and is not sensitive to the pressure drop. The heat transfer performance is mainly affected by the heat transfer coefficient. Therefore, the heat exchange tubes are suitable for adopting a smaller number of branches to accelerate the circulation and increase the heat transfer coefficient; when the outdoor heat exchanger is in the heating flow direction, the refrigerant in its heat exchange tubes is in the low-temperature and low-pressure region, and the heat transfer performance is jointly restricted by the heat transfer coefficient and the pressure drop. Therefore, the heat exchange tubes are suitable for adopting a larger number of branches to greatly reduce the pressure drop while ensuring the heat transfer coefficient and improving the system pressure.

[0003] Existing variable flow splitting heat exchangers can adjust the connection mode of the heat exchange branches of the heat exchanger according to the operating mode of the air conditioning system, so that the heat exchanger has a high heat exchange efficiency in different operating modes.

[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 liquid distribution of the existing variable flow splitting heat exchanger is uneven, which affects the heat exchange effect.

[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. Summary of the Utility Model

[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 variable flow splitting heat exchange module and an air conditioning system to improve the liquid distribution uniformity of the variable flow splitting heat exchanger, thereby improving the heat exchange effect.

[0009] In some embodiments, the variable flow-dividing heat exchange module includes: a first heat exchange module, including a first heat exchange tube group and a first gas pipe member connected to the first heat exchange tube group; a second heat exchange module, including a second heat exchange tube group and a second gas pipe member connected to the second heat exchange tube group; and a gas collecting main pipe, connected to the first gas pipe member and the second gas pipe member. Among them, the gas collecting main pipe is provided with a flow-dividing element, the flow-dividing element includes a flow-dividing main pipe, a first flow-dividing branch pipe and a second flow-dividing branch pipe, and the first flow-dividing branch pipe is connected to a first air inlet position of the first gas pipe member, and the second flow-dividing branch pipe is connected to a second air inlet position of the second gas pipe member.

[0010] In some alternative embodiments, the first gas pipe member includes a first gas collecting pipe and a first gas pipe branch, a second gas pipe branch and a third gas pipe branch connected to the first gas collecting pipe, and the first gas collecting pipe is provided with a first gas pipe conducting component, wherein the first gas pipe branch is arranged on the side of the gas valve conducting outlet end of the first gas pipe conducting component of the first gas collecting pipe, the second gas pipe branch and the third gas pipe branch are arranged on the side of the gas valve conducting inlet end of the first gas pipe conducting component of the first gas collecting pipe, and the first air inlet position is arranged at the upper part of the first gas pipe branch.

[0011] In some alternative embodiments, the second gas pipe member includes a second gas collecting pipe and a fourth gas pipe branch, a fifth gas pipe branch and a sixth gas pipe branch connected to the second gas collecting pipe, and the second gas collecting pipe is provided with a second gas pipe conducting component, wherein the fourth gas pipe branch is arranged on the side of the gas valve conducting outlet end of the second gas pipe conducting component of the second gas collecting pipe, the fifth gas pipe branch and the sixth gas pipe branch are arranged on the side of the gas valve conducting inlet end of the second gas pipe conducting component of the second gas collecting pipe, and the second air inlet position is arranged at the upper part of the fourth gas pipe branch.

[0012] In some alternative embodiments, along the vertical direction, the flow-dividing main pipe of the flow-dividing element is arranged between the first air inlet position of the first gas pipe member and the second air inlet position of the second gas pipe member.

[0013] In some alternative embodiments, along the vertical direction, the flow-dividing main pipe of the flow-dividing element is arranged between the first gas pipe branch of the first gas pipe member and the fourth gas pipe branch of the second gas pipe member.

[0014] In some alternative embodiments, the first flow-dividing branch pipe of the flow-dividing element extends upward in the vertical direction; the second flow-dividing branch pipe of the flow-dividing element extends downward in the vertical direction.

[0015] In some alternative embodiments, the gas collecting main pipe further includes a first connecting pipe section, connecting the first flow-dividing branch pipe and the first air inlet position, wherein the first connecting pipe section includes a U-shaped section; and / or, the gas collecting main pipe further includes a second connecting pipe section, connecting the second flow-dividing branch pipe and the second air inlet position, wherein the second connecting pipe section is integrally formed with the second gas collecting pipe.

[0016] In some alternative embodiments, the first heat exchange module further includes a first liquid pipe member. The first liquid pipe member includes a first liquid collecting pipe and a first liquid pipe conduction component communicatively disposed on the first liquid collecting pipe. Moreover, a first liquid pipe branch and a second liquid pipe branch are disposed on one side of the liquid valve conduction outflow end of the first liquid pipe conduction component of the first liquid collecting pipe, and a third liquid pipe branch is disposed on one side of the liquid valve conduction inflow end of the first liquid pipe conduction component of the first liquid collecting pipe. Wherein, the first heat exchange module further includes a first discrete element, which is disposed in the path of the refrigerant flow and is used for discretizing the refrigerant flowing into the first liquid collecting pipe.

[0017] In some alternative embodiments, the second heat exchange module further includes a second liquid pipe member. The second liquid pipe member includes a second liquid collecting pipe and a second liquid pipe conduction component communicatively disposed on the second liquid collecting pipe. Moreover, a fourth liquid pipe branch and a fifth liquid pipe branch are disposed on one side of the liquid valve conduction outflow end of the second liquid pipe conduction component of the second liquid collecting pipe, and a sixth liquid pipe branch is disposed on one side of the liquid valve conduction inflow end of the second liquid pipe conduction component of the second liquid collecting pipe. Wherein, the second heat exchange module further includes a second discrete element, which is disposed in the path of the refrigerant flow and is used for discretizing the refrigerant flowing into the second liquid collecting pipe.

[0018] In some alternative embodiments, the first liquid pipe member further includes a first horizontal pipe segment, which is communicatively connected to the first liquid collecting pipe. Moreover, the first liquid pipe branch and the second liquid pipe branch are respectively communicatively connected to the first horizontal pipe segment. The first horizontal pipe segment includes a first horizontal communication end communicatively connected to the first liquid collecting pipe and a second horizontal communication end communicatively connected to the first liquid pipe branch and the second liquid pipe branch. Wherein, the distance between the first horizontal communication end and the second horizontal communication end is H1, and 10 mm ≤ H1 ≤ 40 mm; and / or, the first liquid pipe branch includes a first connection end communicatively connected to the first heat exchange branch, and the shortest distance between the first connection end and the outer wall of the first liquid collecting pipe is H2, and 15 mm ≤ H2 ≤ 90 mm; and / or, the second liquid pipe branch includes a second connection end communicatively connected to the second heat exchange branch, and the shortest distance between the second connection end and the outer wall of the first liquid collecting pipe is H3, and 15 mm ≤ H3 ≤ 90 mm.

[0019] In some alternative embodiments, the second liquid pipe member further includes a second horizontal pipe section communicating with the second liquid collecting pipe, and the fourth liquid pipe branch and the fifth liquid pipe branch are respectively communicated with the second horizontal pipe section. The second horizontal pipe section includes a third horizontal communication end communicating with the second liquid collecting pipe, and a fourth horizontal communication end communicating with the fourth liquid pipe branch and the fifth liquid pipe branch. The distance between the third horizontal communication end and the fourth horizontal communication end is H4, where 10 mm ≤ H4 ≤ 40 mm; and / or, the fourth liquid pipe branch includes a third connection end communicating with the fourth heat exchange branch, and the shortest distance between the third connection end and the outer wall of the second liquid collecting pipe is H5, where 15 mm ≤ H5 ≤ 90 mm; and / or, the fifth liquid pipe branch includes a fourth connection end communicating with the fifth heat exchange branch, and the shortest distance between the fourth connection end and the outer wall of the second liquid collecting pipe is H6, where 15 mm ≤ H6 ≤ 90 mm.

[0020] In some alternative embodiments, the first heat exchange tube group includes a first heat exchange branch, a second heat exchange branch, and a third heat exchange branch. The two ends of the first heat exchange branch are respectively communicated with the first air pipe branch and the first liquid pipe branch, the two ends of the second heat exchange branch are respectively communicated with the second air pipe branch and the second liquid pipe branch, and the two ends of the third heat exchange branch are respectively communicated with the third air pipe branch and the third liquid pipe branch.

[0021] In some alternative embodiments, the second heat exchange tube group includes a fourth heat exchange branch, a fifth heat exchange branch, and a sixth heat exchange branch. The two ends of the fourth heat exchange branch are respectively communicated with the fourth air pipe branch and the fourth liquid pipe branch, the two ends of the fifth heat exchange branch are respectively communicated with the fifth air pipe branch and the fifth liquid pipe branch, and the two ends of the sixth heat exchange branch are respectively communicated with the sixth air pipe branch and the sixth liquid pipe branch.

[0022] In some embodiments, the air conditioning system includes the variable flow splitting heat exchange module as described above.

[0023] The variable flow splitting heat exchange module and the air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0024] The variable flow splitting heat exchange module includes a first heat exchange module, a second heat exchange module, and a gas collecting main pipe. The first heat exchange module includes a first heat exchange tube group and a first air pipe member communicating with the first heat exchange tube group. The second heat exchange module includes a second heat exchange tube group and a second air pipe member communicating with the second heat exchange tube group. The gas collecting main pipe is communicated with the first air pipe member and the second air pipe member.

[0025] The gas collecting main pipe is provided with a flow splitting element communicating with the first air pipe member and the second air pipe member. The flow splitting element includes a flow splitting main pipe, a first flow splitting branch pipe, and a second flow splitting branch pipe. The first flow splitting branch pipe is communicated with the first air intake position of the first air pipe member, and the second flow splitting branch pipe is communicated with the second air intake position of the second air pipe member.

[0026] The variable flow - splitting heat - exchange module provided by an embodiment of the present disclosure includes a first heat - exchange module and a second heat - exchange module. Moreover, a flow - splitting element is provided in the gas - collecting main pipe to separately distribute liquid to the first heat - exchange module and the second heat - exchange module, improving the uniformity of refrigerant distribution between the first heat - exchange module and the second heat - exchange module, and thus improving the heat - exchange effect of the variable flow - splitting heat - exchange module.

[0027] The above general description and the following description are only exemplary and explanatory, and are not used to limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] One or more embodiments are illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations 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 among them:

[0029] Figure 1 is a schematic structural diagram of a variable flow - splitting heat - exchange module provided by an embodiment of the present disclosure;

[0030] Figure 2 is a schematic structural diagram of another variable flow - splitting heat - exchange module provided by an embodiment of the present disclosure;

[0031] Figure 3 is a schematic structural diagram of a gas pipe provided by an embodiment of the present disclosure;

[0032] Figure 4 is a schematic structural diagram of another gas pipe provided by an embodiment of the present disclosure;

[0033] Figure 5 is a schematic structural diagram of another gas pipe provided by an embodiment of the present disclosure;

[0034] Figure 6 is a schematic structural diagram of another variable flow - splitting heat - exchange module provided by an embodiment of the present disclosure;

[0035] Figure 7 is a schematic structural diagram of a liquid pipe provided by an embodiment of the present disclosure;

[0036] Figure 8 is a schematic structural diagram of another liquid pipe provided by an embodiment of the present disclosure;

[0037] Figure 9 is Figure 8 an enlarged view of a selected part;

[0038] Figure 10 is Figure 8 another enlarged view of a selected part;

[0039] Figure 11It is a schematic diagram of the refrigerant flow path of a variable shunt heat exchange module provided by an embodiment of the present disclosure;

[0040] Figure 12 It is a schematic diagram of the refrigerant flow path of a variable shunt heat exchange module when it is used as a condenser provided by an embodiment of the present disclosure;

[0041] Figure 13 It is a schematic diagram of the refrigerant flow path of a variable shunt heat exchange module when it is used as an evaporator provided by an embodiment of the present disclosure.

[0042] Reference numerals:

[0043] 11: First gas pipe member; 111: First gas collecting pipe; 112: First gas pipe conduction component; 113: First gas pipe branch; 114: Second gas pipe branch; 115: Third gas pipe branch; 1111: First intake position; 12: First liquid pipe member; 121: First liquid collecting pipe; 122: First liquid pipe conduction component; 123: First liquid pipe branch; 124: Second liquid pipe branch; 125: Third liquid pipe branch; 126: First discrete element; 1201: First horizontal pipe section; 1202: First horizontal connection end; 1203: Second horizontal connection end;

[0044] 21: Second gas pipe member; 211: Second gas collecting pipe; 212: Second gas pipe conduction component; 213: Fourth gas pipe branch; 214: Fifth gas pipe branch; 215: Sixth gas pipe branch; 2111: Second intake position; 22: Second liquid pipe member; 221: Second liquid collecting pipe; 222: Second liquid pipe conduction component; 223: Fourth liquid pipe branch; 224: Fifth liquid pipe branch; 225: Sixth liquid pipe branch; 226: Second discrete element;

[0045] 3: Gas collecting main pipe; 31: Shunt element; 311: Shunt main pipe; 312: First shunt branch; 313: Second shunt branch; 32: First connecting pipe section; 33: Second connecting pipe section;

[0046] 400: First heat exchange tube group; 41: First heat exchange branch; 42: Second heat exchange branch; 43: Third heat exchange branch;

[0047] 500: Second heat exchange tube group; 51: Fourth heat exchange branch; 52: Fifth heat exchange branch; 53: Sixth heat exchange branch. Detailed implementation manners

[0048] 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 attached 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 provide a full understanding of 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 to simplify the drawings.

[0049] In the embodiments of the present disclosure, terms such as "first" and "second" in the specification, claims, and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily 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 "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0050] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", and "rear" 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 devices, elements, or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to being able to represent an 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.

[0051] In addition, the terms "arranged", "connected", and "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 can be internal communication 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.

[0052] Unless otherwise specified, the term "plurality" means two or more.

[0053] The term "and / or" is a description of the associated relationship of an object, indicating that there can be three relationships. For example, A and / or B means: A or B, or, A and B these three relationships.

[0054] It should be noted that, without conflict, the embodiments and the features in the embodiments in the embodiments of the present disclosure can be combined with each other.

[0055] An embodiment of the present disclosure provides a variable flow-dividing heat exchange module, which includes a first heat exchange module, a second heat exchange module, and a gas collecting main pipe 3. The first heat exchange module includes a first heat exchange tube group 400 and a first gas pipe member 11 communicated with the first heat exchange tube group 400. The second heat exchange module includes a second heat exchange tube group 500 and a second gas pipe member 21 communicated with the second heat exchange tube group 500. The gas collecting main pipe 3 is communicated with the first gas pipe member 11 and the second gas pipe member 21. Wherein, the gas collecting main pipe 3 is provided with a flow-dividing element 31. The flow-dividing element 31 includes a flow-dividing main pipe 311, a first flow-dividing branch pipe 312, and a second flow-dividing branch pipe 313. And the first flow-dividing branch pipe 312 is communicated with a first air inlet position 1111 of the first gas pipe member 11, and the second flow-dividing branch pipe 313 is communicated with a second air inlet position 2111 of the second gas pipe member 21.

[0056] The variable flow-dividing heat exchange module is a heat exchanger in which the heat exchange branches have different connection modes under different operating modes, so that the connection mode of the heat exchange branches conforms to the current operating mode of the air-conditioning system. For example, when the variable flow-dividing heat exchange module is used as a condenser, multiple heat exchange branches in the first heat exchange module and the second heat exchange module are connected in series; when the variable flow-dividing heat exchange module is used as an evaporator, multiple heat exchange branches in the first heat exchange module and the second heat exchange module are connected in parallel.

[0057] In the variable flow-dividing heat exchange module provided by the embodiment of the present disclosure, a first heat exchange module and a second heat exchange module are included. In the same heat exchanger, multiple variable flow-dividing modules are provided. In this way, a larger commercial air-conditioning system can achieve variable flow division. At the same time, the gas collecting main pipe 3 is provided with a flow-dividing element 31. The flow-dividing element 31 includes a flow-dividing main pipe 311 provided with a total refrigerant inlet and outlet, and a first flow-dividing branch pipe 312 and a second flow-dividing branch pipe 313 communicated with the flow-dividing main pipe 311. And the first flow-dividing branch pipe 312 is communicated with a first air inlet position 1111 of the first gas pipe member 11, and the second flow-dividing branch pipe 313 is communicated with a second air inlet position 2111 of the second gas pipe member 21.

[0058] In this way, the refrigerant entering the gas collecting main pipe 3 is divided by the flow-dividing element 31, improving the uniformity of refrigerant distribution to the first heat exchange module and the second heat exchange module, and further improving the heat exchange effect of the variable flow-dividing heat exchange module.

[0059] Optionally, the first air pipe member 11 includes a first header pipe 111, a first air pipe branch 113, a second air pipe branch 114, and a third air pipe branch 115 that communicate with the first header pipe 111. The first header pipe 111 is provided with a first air pipe conduction component 112. Among them, the first air pipe branch 113 is disposed on the side of the air valve conduction outflow end of the first air pipe conduction component 112 of the first header pipe 111, and the second air pipe branch 114 and the third air pipe branch 115 are disposed on the side of the air valve conduction inflow end of the first air pipe conduction component 112 of the first header pipe 111. Moreover, the first air intake position 1111 is provided at the upper part of the first air pipe branch 113, as Figure 4 shown.

[0060] The first air pipe branch 113 is located above the second air pipe branch 114 and the third air pipe branch 115, and the first air intake position 1111 is provided at the upper part of the first air pipe branch 113. In this way, the refrigerant in the first diversion branch 312 of the diversion element 31 can enter the first air pipe member 11 through the first air intake position 1111 located at the upper part, increasing the uniformity of the diversion of the header pipe 3.

[0061] Optionally, the first air pipe conduction component 112 is a one-way conduction component. For example, the first air pipe conduction component 112 is a one-way valve or a solenoid valve with controlled one-way conduction. Optionally, the first air pipe conduction component 112 can be embedded in the first header pipe 111.

[0062] Optionally, the second air pipe member 21 includes a second header pipe 211, a fourth air pipe branch 213, a fifth air pipe branch 214, and a sixth air pipe branch 215 that communicate with the second header pipe 211. The second header pipe 211 is provided with a second air pipe conduction component 212. Among them, the fourth air pipe branch 213 is disposed on the side of the air valve conduction outflow end of the second air pipe conduction component 212 of the second header pipe 211, and the fifth air pipe branch 214 and the sixth air pipe branch 215 are disposed on the side of the air valve conduction inflow end of the second air pipe conduction component 212 of the second header pipe 211. Moreover, the second air intake position 2111 is provided at the upper part of the fourth air pipe branch 213. As Figure 4 shown.

[0063] The fourth air pipe branch 213 is located above the fifth air pipe branch 214 and the sixth air pipe branch 215, and the second air intake position 2111 is provided at the upper part of the fourth air pipe branch 213. In this way, the refrigerant in the second diversion branch 313 of the diversion element 31 can enter the second air pipe member 21 through the second air intake position 2111 located at the upper part, increasing the uniformity of the diversion of the header pipe 3.

[0064] Optionally, the second tracheal conduction component 212 is a one-way conduction component. For example, the second tracheal conduction component 212 is a one-way valve or a solenoid valve with controlled one-way conduction. Optionally, the second tracheal conduction component 212 can be embedded in the second gas collecting pipe 211.

[0065] Optionally, along the vertical direction, the main flow dividing pipe 311 of the flow dividing element 31 is arranged between the first air inlet position 1111 of the first tracheal component 11 and the second air inlet position 2111 of the second tracheal component 21.

[0066] In the vertical height direction, the main flow dividing pipe 311 is arranged between the first air inlet position 1111 and the second air inlet position 2111. In this way, the uniformity of liquid separation from the gas collecting main pipe 3 to the first tracheal component 11 and the second tracheal component 21 is increased. Optionally, along the vertical direction, the main flow dividing pipe 311 is closer to the first air inlet position 1111.

[0067] Optionally, along the vertical direction, the main flow dividing pipe 311 of the flow dividing element 31 is arranged between the first tracheal branch pipe 113 of the first tracheal component 11 and the fourth tracheal branch pipe 213 of the second tracheal component 21.

[0068] In the vertical height direction, the main flow dividing pipe 311 is arranged between the first tracheal branch pipe 113 and the fourth tracheal branch pipe 213. In this way, the uniformity of liquid separation from the gas collecting main pipe 3 to the first tracheal component 11 and the second tracheal component 21 is increased. Optionally, along the vertical direction, the main flow dividing pipe 311 is closer to the first tracheal branch pipe 113.

[0069] Optionally, the first flow dividing branch pipe 312 of the flow dividing element 31 extends upward in the vertical direction; the second flow dividing branch pipe 313 of the flow dividing element 31 extends downward in the vertical direction.

[0070] The first flow dividing branch pipe 312 is a vertical straight pipe section and extends upward, and the second flow dividing branch pipe 313 is a vertical straight pipe section and extends downward. The main flow dividing pipe 311 at least includes a horizontal straight pipe section, and the horizontal straight pipe section is perpendicular to the first flow dividing branch pipe 312 and the second flow dividing branch pipe 313. In this way, the liquid separation uniformity of the flow dividing element 31 is improved.

[0071] Optionally, the gas collecting main pipe 3 further includes a first connecting pipe section 32 that connects the first flow dividing branch pipe 312 and the first air inlet position 1111, and the first connecting pipe section 32 includes a U-shaped section.

[0072] The gas collecting main pipe 3 is connected to the first air inlet position 1111 through the first connecting pipe section 32, and the first connecting pipe section 32 is generally U-shaped with a downward opening. As Figure 3 shown.

[0073] Optionally, the gas collecting main pipe 3 further includes a second connecting pipe section 33 that connects the second shunt branch pipe 313 to the second air intake position 2111. Here, the second connecting pipe section 33 is integrally formed with the second gas collecting pipe 211.

[0074] The gas collecting main pipe 3 is connected to the second air intake position 2111 through the second connecting pipe section 33. The second connecting pipe section 33 is integrally formed with the second gas collecting pipe 211, which greatly simplifies the process and connection method of the entire air pipe. Optionally, the second connecting pipe section 33 includes an inclined pipe section.

[0075] Optionally, the first heat exchange module further includes a first liquid pipe member 12. The first liquid pipe member 12 includes a first liquid collecting pipe 121 and a first liquid pipe conduction component 122 connected to the first liquid collecting pipe 121. Moreover, on the side of the liquid valve conduction outflow end of the first liquid pipe conduction component 122 of the first liquid collecting pipe 121, a first liquid pipe branch 123 and a second liquid pipe branch 124 are provided. On the side of the liquid valve conduction inflow end of the first liquid pipe conduction component 122 of the first liquid collecting pipe 121, a third liquid pipe branch 125 is provided. Here, the first heat exchange module further includes a first discrete element 126, which is arranged in the path of the refrigerant flow and is used to disperse the refrigerant flowing into the first liquid collecting pipe 121.

[0076] Optionally, the first liquid pipe conduction component 122 is a one-way conduction component. For example, the first liquid pipe conduction component 122 is a one-way valve or a solenoid valve with controlled one-way conduction. Optionally, the first liquid pipe conduction component 122 can be embedded in the first liquid collecting pipe 121.

[0077] Moreover, the first heat exchange module further includes a first discrete element 126. When the variable shunt heat exchange module is used as an evaporator, the first discrete element 126 can disperse the incoming refrigerant in a gas-liquid mixed state, improving the stability of the amount of refrigerant flowing into the third liquid pipe branch 125. At the same time, it improves the liquid distribution uniformity of the first liquid pipe branch 123, the second liquid pipe branch 124, and the third liquid pipe branch 125. As Figure 7 shown.

[0078] The second heat exchange module further includes a second liquid pipe member 22. The second liquid pipe member 22 includes a second liquid collecting pipe 221 and a second liquid pipe conduction component 222 connected to the second liquid collecting pipe 221. Moreover, on the side of the liquid valve conduction outflow end of the second liquid pipe conduction component 222 of the second liquid collecting pipe 221, a fourth liquid pipe branch 223 and a fifth liquid pipe branch 224 are provided. On the side of the liquid valve conduction inflow end of the second liquid pipe conduction component 222 of the second liquid collecting pipe 221, a sixth liquid pipe branch 225 is provided. Here, the second heat exchange module further includes a second discrete element 226, which is arranged in the path of the refrigerant flow and is used to disperse the refrigerant flowing into the second liquid collecting pipe 221.

[0079] Optionally, the second liquid pipe conduction component 222 is a one-way conduction component. For example, the second liquid pipe conduction component 222 is a one-way valve or a solenoid valve with controlled one-way conduction. Optionally, the second liquid pipe conduction component 222 can be embedded in the second liquid collecting pipe 221.

[0080] Similarly, the second heat exchange module further includes a second discrete element 226. When the variable flow splitting heat exchange module serves as an evaporator, the second discrete element 226 can break up the incoming refrigerant in a gas-liquid mixed state, improving the stability of the amount of refrigerant flowing into the sixth liquid pipe branch 225, and at the same time improving the liquid distribution uniformity of the fourth liquid pipe branch 223, the fifth liquid pipe branch 224, and the sixth liquid pipe branch 225.

[0081] Optionally, the first liquid pipe member 12 further includes a first horizontal pipe section 1201, which is connected to the first liquid collecting pipe 121. Moreover, the first liquid pipe branch 123 and the second liquid pipe branch 124 are respectively connected to the first horizontal pipe section 1201. The first horizontal pipe section 1201 includes a first horizontal connection end 1202 connected to the first liquid collecting pipe 121, and a second horizontal connection end 1203 connected to the first liquid pipe branch 123 and the second liquid pipe branch 124. Wherein, the distance between the first horizontal connection end 1202 and the second horizontal connection end 1203 is H1, and 10mm ≤ H1 ≤ 40mm; and / or, the first liquid pipe branch 123 includes a first connection end connected to the first heat exchange branch 41, and the shortest distance between the first connection end and the outer wall of the first liquid collecting pipe 121 is H2, and 15mm ≤ H2 ≤ 90mm; and / or, the second liquid pipe branch 124 includes a second connection end connected to the second heat exchange branch 42, and the shortest distance between the second connection end and the outer wall of the first liquid collecting pipe 121 is H3, and 15mm ≤ H3 ≤ 90mm. As Figure 9 and Figure 10 shown.

[0082] After the refrigerant flows through the first horizontal pipe section 1201, it then flows into the first liquid pipe branch 123 and the second liquid pipe branch 124 respectively. At this time, the horizontal length of the first horizontal pipe section 1201 should not be too long. Otherwise, too much refrigerant will be split into the second liquid pipe branch 124 under the action of gravity. In this way, too much refrigerant will flow into the second heat exchange branch 42, while too little refrigerant will flow into the first heat exchange branch 41. In the embodiments of the present disclosure, 10mm ≤ H1 ≤ 40mm. In this way, while increasing the refrigerant distribution amount of the second heat exchange branch 42, it will not cause too little refrigerant in the first heat exchange branch 41. The uniformity of refrigerant flow between the heat exchange branches of the first heat exchange module is improved.

[0083] The first connection end can be understood as the first expansion connection end where the first liquid pipe branch 123 is expansion-connected to the first heat exchange branch 41. Similarly, the second connection end can be understood as the second expansion connection end where the second liquid pipe branch 124 is expansion-connected to the second heat exchange branch 42.

[0084] Generally, the heat exchange tubes of the heat exchange branches of the heat exchanger are connected to the branches of the header component by expansion welding. And when expansion welding is performed, a necking structure is provided at the connection between the heat exchange tube and the branch to improve the connection stability between the two. The shortest distance between the first connection end or the second connection end and the outer wall of the first liquid collecting pipe 121 should not be too large. Otherwise, too much refrigerant will flow into the second heat exchange branch 42 through the second liquid pipe branch 124 under the action of gravity, resulting in too little refrigerant being shunted to the first heat exchange branch 41 located in the upper part, thereby reducing the uniformity of the refrigerant amount among the heat exchange branches of the first heat exchange module. The shortest distance between the first connection end and the outer wall of the first liquid collecting pipe 121 is H2, and 15mm ≤ H2 ≤ 90mm. Further, 35mm ≤ H2 ≤ 70mm. Similarly, the shortest distance between the second connection end and the outer wall of the first liquid collecting pipe 121 is H3, and 15mm ≤ H3 ≤ 90mm. Further, 35mm ≤ H3 ≤ 70mm. In this way, while increasing the refrigerant distribution amount of the second heat exchange branch 42, it will not cause too little refrigerant in the first heat exchange branch 41. The uniformity of the refrigerant flow among the heat exchange branches of the first heat exchange module is improved.

[0085] Optionally, the second liquid pipe component 22 further includes a second horizontal pipe section, which is connected to the second liquid collecting pipe 221. And the fourth liquid pipe branch 223 and the fifth liquid pipe branch 224 are respectively connected to the second horizontal pipe section. The second horizontal pipe section includes a third horizontal connection end connected to the second liquid collecting pipe 221, and a fourth horizontal connection end connected to the fourth liquid pipe branch 223 and the fifth liquid pipe branch 224. Wherein, the distance between the third horizontal connection end and the fourth horizontal connection end is H4, and 10mm ≤ H4 ≤ 40mm; and / or, the fourth liquid pipe branch 223 includes a third connection end connected to the fourth heat exchange branch 51, and the shortest distance between the third connection end and the outer wall of the second liquid collecting pipe 221 is H5, and 15mm ≤ H5 ≤ 90mm; and / or, the fifth liquid pipe branch 224 includes a fourth connection end connected to the fifth heat exchange branch 52, and the shortest distance between the fourth connection end and the outer wall of the second liquid collecting pipe 221 is H6, and 15mm ≤ H6 ≤ 90mm.

[0086] After the refrigerant flows through the second horizontal pipe section, it then flows into the fourth liquid pipe branch 223 and the fifth liquid pipe branch 224 respectively. At this time, the horizontal length of the second horizontal pipe section should not be too long. Otherwise, too much refrigerant will be diverted to the fifth liquid pipe branch 224 under the action of gravity. In this way, too much refrigerant flows into the fifth heat exchange branch 52, while too little refrigerant flows into the fourth heat exchange branch 51. In the embodiment of the present disclosure, 10mm ≤ H4 ≤ 40mm. In this way, while increasing the refrigerant distribution amount of the fifth heat exchange branch 52, it will not cause too little refrigerant in the fourth heat exchange branch 51. The uniformity of refrigerant flow among the heat exchange branches of the second heat exchange module is improved.

[0087] The third connection end can be understood as the third expansion connection end where the fourth liquid pipe branch 223 is expandably connected to the fourth heat exchange branch 51. Similarly, the fourth connection end can be understood as the fourth expansion connection end where the fifth liquid pipe branch 224 is expandably connected to the fifth heat exchange branch 52.

[0088] Generally, the heat exchange pipes of the heat exchange branches of the heat exchanger are connected to the branch pipes of the header member by means of expansion welding. Moreover, when performing expansion welding, a necking structure is provided at the connection between the heat exchange pipe and the branch pipe to improve the connection stability between the two. The shortest distance between the third connection end or the fourth connection end and the outer wall of the second liquid collector 221 should not be too large. Otherwise, too much refrigerant will flow into the fifth heat exchange branch 52 through the fifth liquid pipe branch 224 under the action of gravity, and too little refrigerant will be diverted to the fourth heat exchange branch 51 located in the upper part, thereby reducing the uniformity of the refrigerant amount among the heat exchange branches of the second heat exchange module. The shortest distance between the third connection end and the outer wall of the second liquid collector 221 is H5, 15mm ≤ H5 ≤ 90mm. Further, 35mm ≤ H5 ≤ 70mm. Similarly, the shortest distance between the fourth connection end and the outer wall of the second liquid collector 221 is H6, 15mm ≤ H6 ≤ 90mm. Further, 35mm ≤ H6 ≤ 70mm. In this way, while increasing the refrigerant distribution amount of the fifth heat exchange branch 52, it will not cause too little refrigerant in the fourth heat exchange branch 51. The uniformity of refrigerant flow among the heat exchange branches of the second heat exchange module is improved.

[0089] Optionally, the first heat exchange tube group 400 includes a first heat exchange branch 41, a second heat exchange branch 42, and a third heat exchange branch 43. Among them, the two ends of the first heat exchange branch 41 are respectively communicated with the first gas pipe branch 113 and the first liquid pipe branch 123, the two ends of the second heat exchange branch 42 are respectively communicated with the second gas pipe branch 114 and the second liquid pipe branch 124, and the two ends of the third heat exchange branch 43 are respectively communicated with the third gas pipe branch 115 and the third liquid pipe branch 125.

[0090] Through the settings of the first gas pipe conduction component 112 and the first liquid pipe conduction component 122 with one-way conduction, when the variable shunt heat exchange module serves as a condenser, the first gas pipe conduction component 112 and the first liquid pipe conduction component 122 are closed, and the first heat exchange branch 41, the second heat exchange branch 42, and the third heat exchange branch 43 of the first heat exchange tube group 400 are connected in series. The refrigerant flows through the first heat exchange branch 41, the second heat exchange branch 42, and the third heat exchange branch 43 in sequence, as Figure 12 shown; when the variable shunt heat exchange module serves as an evaporator, the first gas pipe conduction component 112 and the first liquid pipe conduction component 122 are conducted, and the first heat exchange branch 41, the second heat exchange branch 42, and the third heat exchange branch 43 of the first heat exchange tube group 400 are connected in parallel. The refrigerant flows through the first heat exchange branch 41, the second heat exchange branch 42, and the third heat exchange branch 43 respectively, as Figure 13 shown.

[0091] Optionally, the second heat exchange tube group 500 includes a fourth heat exchange branch 51, a fifth heat exchange branch 52, and a sixth heat exchange branch 53. Among them, both ends of the fourth heat exchange branch 51 are connected to the fourth gas pipe branch 213 and the fourth liquid pipe branch 223 respectively, both ends of the fifth heat exchange branch 52 are connected to the fifth gas pipe branch 214 and the fifth liquid pipe branch 224 respectively, and both ends of the sixth heat exchange branch 53 are connected to the sixth gas pipe branch 215 and the sixth liquid pipe branch 225 respectively.

[0092] Through the settings of the second gas pipe conduction component 212 and the second liquid pipe conduction component 222 with one-way conduction, when the variable shunt heat exchange module serves as a condenser, the second gas pipe conduction component 212 and the second liquid pipe conduction component 222 are closed, and the fourth heat exchange branch 51, the fifth heat exchange branch 52, and the sixth heat exchange branch 53 of the second heat exchange tube group 500 are connected in series. The refrigerant flows through the fourth heat exchange branch 51, the fifth heat exchange branch 52, and the sixth heat exchange branch 53 in sequence, as Figure 12 shown; when the variable shunt heat exchange module serves as an evaporator, the second gas pipe conduction component 212 and the second liquid pipe conduction component 222 are conducted, and the fourth heat exchange branch 51, the fifth heat exchange branch 52, and the sixth heat exchange branch 53 of the second heat exchange tube group 500 are connected in parallel. The refrigerant flows through the fourth heat exchange branch 51, the fifth heat exchange branch 52, and the sixth heat exchange branch 53 respectively, as Figure 13 shown.

[0093] The embodiment of the present disclosure further provides an air conditioning system, including the aforementioned variable shunt heat exchange module.

[0094] It can be understood that by using the air conditioning system provided by the embodiment of the present disclosure, the effects it possesses are the same as those described in the above variable shunt heat exchange module, and will not be elaborated here.

[0095] In the air conditioning system provided by the embodiments of the present disclosure, the larger heat exchanger is divided into heat exchange modules, which improves the uniformity and stability of the refrigerant distribution amount between each heat exchange branch, thereby improving the heat exchange capacity of the heat exchanger and the cooling and heating capacities of the air conditioning system.

[0096] 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 represent only possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures already described 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 limited only by the appended claims.

Claims

1. A variable split flow heat exchange module, characterized in that: include: The first heat exchange module comprises a first heat exchange tube group and a first air pipe component connected to the first heat exchange tube group; A second heat exchange module comprises a second heat exchange tube group and a second air pipe member connected to the second heat exchange tube group; and, The gas collecting main pipe is connected with the first gas pipe component and the second gas pipe component, Among them, the gas collecting main pipe is provided with a diversion element, which includes a diversion main pipe, a first diversion branch pipe and a second diversion branch pipe, and the first diversion branch pipe is connected to the first air intake position of the first air pipe component, and the second diversion branch pipe is connected to the second air intake position of the second air pipe component.

2. The variable split flow heat exchange module according to claim 1, characterized in that: The first air pipe component includes a first air collecting pipe and a first air pipe branch pipe, a second air pipe branch pipe and a third air pipe branch pipe connected to the first air collecting pipe, and the first air collecting pipe is provided with a first air pipe conducting component. Among them, the first air pipe branch is arranged on the side of the air valve conduction outflow end of the first air pipe conduction component of the first air collecting pipe, the second air pipe branch and the third air pipe branch are arranged on the side of the air valve conduction inflow end of the first air pipe conduction component of the first air collecting pipe, and the first air intake position is arranged at the upper part of the first air pipe branch.

3. The variable split flow heat exchange module according to claim 2, characterized in that: The second air pipe component includes a second air collecting pipe and a fourth air pipe branch pipe, a fifth air pipe branch pipe and a sixth air pipe branch pipe connected to the second air collecting pipe, and the second air collecting pipe is provided with a second air pipe conducting component. Among them, the fourth air pipe branch is arranged on the side of the air valve conduction outflow end of the second air pipe conduction component of the second air collecting pipe, the fifth air pipe branch and the sixth air pipe branch are arranged on the side of the air valve conduction inflow end of the second air pipe conduction component of the second air collecting pipe, and the second air intake position is arranged at the upper part of the fourth air pipe branch.

4. The variable split flow heat exchange module according to claim 3, characterized in that: In the vertical direction, the flow dividing main pipe of the flow dividing element is arranged between the first air inlet position of the first air pipe component and the second air inlet position of the second air pipe component.

5. The variable split flow heat exchange module according to claim 4, characterized in that: In the vertical direction, the flow dividing main pipe of the flow dividing element is arranged between the first airway branch pipe of the first airway component and the fourth airway branch pipe of the second airway component.

6. The variable split flow heat exchange module according to claim 3, characterized in that: The first flow branch pipe of the flow dividing element is extended upward in the vertical direction; The second flow branch pipe of the flow branch element is extended downward in the vertical direction.

7. The variable split flow heat exchange module according to claim 3, characterized in that: The gas collecting main pipe further includes a first connecting pipe section connecting the first branch pipe and the first air inlet position, wherein the first connecting pipe section includes a U-shaped section; and / or, The gas collecting main pipe also includes a second connecting pipe section connecting the second branch pipe and the second air intake position, wherein the second connecting pipe section and the second gas collecting pipe are integrally formed.

8. The variable flow split heat exchange module according to any one of claims 1 to 7, characterized in that: The first heat exchange module further includes a first liquid pipe component, the first liquid pipe component includes a first liquid collecting pipe and a first liquid pipe conducting component connected to the first liquid collecting pipe, and a first liquid pipe branch and a second liquid pipe branch are provided on one side of a liquid valve conducting outflow end of the first liquid pipe conducting component of the first liquid collecting pipe, and a third liquid pipe branch is provided on one side of a liquid valve conducting inflow end of the first liquid pipe conducting component of the first liquid collecting pipe, wherein the first heat exchange module further includes a first discrete element, which is provided in a path where the refrigerant flows, and is used to discrete the refrigerant flowing into the first liquid collecting pipe; The second heat exchange module also includes a second liquid pipe component, which includes a second liquid collecting pipe and a second liquid pipe conducting component connected to the second liquid collecting pipe, and a fourth liquid pipe branch and a fifth liquid pipe branch are arranged on the liquid valve conducting outflow end side of the second liquid pipe conducting component of the second liquid collecting pipe, and a sixth liquid pipe branch is arranged on the liquid valve conducting inflow end side of the second liquid pipe conducting component of the second liquid collecting pipe, wherein the second heat exchange module also includes a second discrete element, which is arranged in the refrigerant circulation path and is used to discrete the refrigerant flowing into the second liquid collecting pipe.

9. The variable split flow heat exchange module according to claim 8, characterized in that: The first liquid pipe member also includes a first transverse pipe section connected to the first liquid collecting pipe, and the first liquid pipe branch pipe and the second liquid pipe branch pipe are respectively connected to the first transverse pipe section, and the first transverse pipe section includes a first transverse connecting end connected to the first liquid collecting pipe, and a second transverse connecting end connected to the first liquid pipe branch pipe and the second liquid pipe branch pipe, wherein: The distance between the first transverse connecting end and the second transverse connecting end is H1, 10mm≤H1≤40mm; and / or, The first liquid pipe branch includes a first connecting end connected to the first heat exchange branch, and the shortest distance between the first connecting end and the outer wall of the first liquid collecting pipe is H2, 15mm≤H2≤90mm; and / or, The second liquid pipe branch includes a second connecting end connected to the second heat exchange branch, and the shortest distance between the second connecting end and the outer wall of the first liquid collecting pipe is H3, 15mm≤H3≤90mm.

10. The variable split flow heat exchange module according to claim 8, characterized in that: The second liquid pipe member also includes a second transverse pipe section connected to the second liquid collecting pipe, and the fourth liquid pipe branch and the fifth liquid pipe branch are respectively connected to the second transverse pipe section, and the second transverse pipe section includes a third transverse connecting end connected to the second liquid collecting pipe, and a fourth transverse connecting end connected to the fourth liquid pipe branch and the fifth liquid pipe branch, wherein, The distance between the third transverse connecting end and the fourth transverse connecting end is H4, 10mm≤H4≤40mm; and / or, The fourth liquid pipe branch includes a third connection end connected to the fourth heat exchange branch, and the shortest distance between the third connection end and the outer wall of the second liquid collecting pipe is H5, 15mm≤H5≤90mm; and / or, The fifth liquid pipe branch includes a fourth connecting end connected to the fifth heat exchange branch, and the shortest distance between the fourth connecting end and the outer wall of the second liquid collecting pipe is H6, 15mm≤H6≤90mm.

11. The variable split flow heat exchange module according to claim 8, characterized in that: The first heat exchange tube group includes a first heat exchange branch, a second heat exchange branch and a third heat exchange branch, wherein two ends of the first heat exchange branch are respectively connected to the first gas pipe branch and the first liquid pipe branch, two ends of the second heat exchange branch are respectively connected to the second gas pipe branch and the second liquid pipe branch, and two ends of the third heat exchange branch are respectively connected to the third gas pipe branch and the third liquid pipe branch; The second heat exchange tube group includes a fourth heat exchange branch, a fifth heat exchange branch and a sixth heat exchange branch, wherein two ends of the fourth heat exchange branch are respectively connected to the fourth air pipe branch and the fourth liquid pipe branch, two ends of the fifth heat exchange branch are respectively connected to the fifth air pipe branch and the fifth liquid pipe branch, and two ends of the sixth heat exchange branch are respectively connected to the sixth air pipe branch and the sixth liquid pipe branch.

12. An air conditioning system, characterized in that: It comprises a variable split flow heat exchange module as described in any one of claims 1 to 11.

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