Micro-channel variable split heat exchanger and air conditioner
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-14
- Publication Date
- 2026-08-11
AI Technical Summary
[0008]本公开实施例提供一种微通道可变分流换热器和空调器，以解决现有的可变分流换热器的形式较为单一的问题
[0021]微通道可变分流换热器包括微通道可变分流模块，微通道可变分流模块包括第一排微通道管组和第二排微通道管组。第一排微通道管组包括多个上下排布的第一微通道换热管；第二排微通道管组与第一排微通道管组横向并排设置，第二排微通道管组包括多个上下排布的第二微通道换热管。其中，第一排微通道管组的设置高度高于第二排微通道管组的设置高度，并且，沿竖直方向上，多个第一微通道换热管与多个第二微通道换热管错开设置。
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Figure CN224623207U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of air conditioning technology, such as a microchannel variable flow heat exchanger and an air conditioner. Background Technology
[0002] Existing dual-mode air conditioners, taking the outdoor heat exchanger as an example, use the outdoor heat exchanger as a condenser when the air conditioner is in cooling mode, and as an evaporator when the air conditioner is in heating mode.
[0003] Existing variable flow heat exchangers can adjust the connection configuration of heat exchange branches according to different operating conditions of the air conditioner. In heating mode, the variable flow heat exchanger acts as an evaporator, with the refrigerant in the heat exchange tubes in a low-temperature, low-pressure region. Its heat transfer performance is mainly constrained by the heat transfer coefficient and pressure drop. This makes it suitable for a relatively large number of heat exchange branches, significantly reducing pressure drop and increasing system pressure while maintaining the heat transfer coefficient, thereby improving low-temperature heating capacity. In cooling mode, the variable flow heat exchanger acts as a condenser, with the refrigerant in the heat exchange tubes in a high-temperature, high-pressure region. It is less sensitive to pressure drop, and its heat transfer performance is mainly affected by the heat transfer coefficient. This makes it suitable for a smaller number of heat exchange branches to accelerate circulation and increase the heat transfer coefficient, thereby improving high-temperature cooling capacity.
[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:
[0005] Most existing variable flow heat exchangers are copper tube heat exchangers, and the form of the heat exchanger is relatively simple.
[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content
[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.
[0008] This disclosure provides a microchannel variable flow heat exchanger and an air conditioner to address the problem that existing variable flow heat exchangers have a relatively limited range of forms.
[0009] In some embodiments, the microchannel variable flow heat exchanger includes a microchannel variable flow module, which includes: a first row of microchannel tubes, including a plurality of first microchannel heat exchange tubes arranged vertically; and a second row of microchannel tubes, arranged horizontally alongside the first row of microchannel tubes, the second row of microchannel tubes including a plurality of second microchannel heat exchange tubes arranged vertically, wherein the first row of microchannel tubes is arranged at a higher height than the second row of microchannel tubes, and the plurality of first microchannel heat exchange tubes and the plurality of second microchannel heat exchange tubes are staggered in the vertical direction.
[0010] In some optional embodiments, the first row of microchannel tubes includes a serpentine first upper microchannel heat exchange tube located at the top. The first upper microchannel heat exchange tube includes a first upper microchannel heat exchange section, a first middle microchannel heat exchange section, and a first lower microchannel heat exchange section arranged sequentially from top to bottom. The second row of microchannel tubes includes a serpentine second upper microchannel heat exchange tube located at the top. The second upper microchannel heat exchange tube includes a second upper microchannel heat exchange section, a second middle microchannel heat exchange section, and a second lower microchannel heat exchange section arranged sequentially from top to bottom. In the vertical direction, the second upper microchannel heat exchange section is disposed between the first middle microchannel heat exchange section and the first lower microchannel heat exchange section.
[0011] In some optional embodiments, the first row of microchannel tubes further includes a first middle microchannel heat exchange tube located below the first upper microchannel heat exchange tube. The first upper microchannel heat exchange tube is provided with a first upper inlet and a first upper outlet. The first middle microchannel heat exchange tube is provided with a first middle inlet and a first middle outlet. The second upper microchannel heat exchange tube is provided with a second upper inlet and a second upper outlet. The microchannel variable flow heat exchanger further includes a gas collecting pipe and a liquid collecting pipe. In the vertical direction, the first upper inlet, the second upper inlet and the first middle inlet are connected to the gas collecting pipe from top to bottom, and the first upper outlet, the second upper outlet and the first middle outlet are connected to the liquid collecting pipe from top to bottom.
[0012] In some alternative embodiments, the second upper inlet is located above the first upper outlet in the vertical direction, and the first middle inlet is located above the second upper outlet.
[0013] In some alternative embodiments, the first upper inlet, the second upper inlet, the first upper outlet, the first middle inlet, the second upper outlet, and the first middle outlet are arranged sequentially along the vertical direction.
[0014] In some alternative embodiments, along the vertical direction, the distance between two adjacent microchannel heat exchange sections in the same row is h1, and the distance between the first upper outlet and the second upper outlet is h2, wherein h1 < h2 < 2h1.
[0015] In some optional embodiments, the microchannel variable flow heat exchanger further includes: a first unidirectional conduction member disposed in the gas collecting pipe and located between the first upper inlet and the second upper inlet, wherein the conduction direction of the first unidirectional conduction member is from the first upper inlet to the second upper inlet; and a second unidirectional conduction member disposed in the liquid collecting pipe and located between the second upper outlet and the first middle outlet, wherein the conduction direction of the second unidirectional conduction member is from the second upper outlet to the first middle outlet. When the microchannel variable flow heat exchanger is used as a condenser, the first unidirectional conduction member and the second unidirectional conduction member are closed, and the first upper microchannel heat exchange tube, the second upper microchannel heat exchange tube, and the first middle microchannel heat exchange tube are connected in series. When the microchannel variable flow heat exchanger is used as an evaporator, the first unidirectional conduction member and the second unidirectional conduction member are open, and the first upper microchannel heat exchange tube, the second upper microchannel heat exchange tube, and the first middle microchannel heat exchange tube are connected in parallel.
[0016] In some alternative embodiments, the microchannel variable flow distribution module further includes: a heat dissipation fin assembly comprising multiple heat dissipation fins, wherein the heat dissipation fins are inserted into the microchannel heat exchange tube.
[0017] In some alternative embodiments, there are multiple microchannel variable shunt modules, and the multiple microchannel variable shunt modules are arranged vertically.
[0018] In some embodiments, the air conditioner includes a microchannel variable flow heat exchanger as described above.
[0019] In some alternative embodiments, the air conditioner further includes a fan disposed on one side of the microchannel variable flow heat exchanger, wherein the first row of microchannel tubes is disposed close to the fan.
[0020] The microchannel variable flow heat exchanger and air conditioner provided in this disclosure can achieve the following technical effects:
[0021] The microchannel variable flow heat exchanger includes a microchannel variable flow module, which comprises a first row of microchannel tubes and a second row of microchannel tubes. The first row of microchannel tubes includes multiple vertically arranged first microchannel heat exchange tubes. The second row of microchannel tubes is arranged horizontally alongside the first row, and includes multiple vertically arranged second microchannel heat exchange tubes. The first row of microchannel tubes is positioned at a higher height than the second row, and vertically, the multiple first microchannel heat exchange tubes and multiple second microchannel heat exchange tubes are staggered.
[0022] This disclosure provides a microchannel variable flow heat exchanger. The microchannel variable flow module has a double-row structure, including a first row of microchannel tube groups and a second row of microchannel tube groups arranged horizontally side by side. The first row of microchannel tube groups includes multiple first microchannel heat exchange tubes arranged vertically; the second row of microchannel tube groups includes multiple second microchannel heat exchange tubes arranged vertically.
[0023] Furthermore, the first row of microchannel tubes is set at a higher height than the second row of microchannel tubes. In the vertical direction, multiple first microchannel heat exchange tubes and multiple second microchannel heat exchange tubes are staggered, which improves the heat exchange effect of the microchannel variable flow heat exchanger.
[0024] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description
[0025] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:
[0026] Figure 1 This is a schematic diagram of a microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0027] Figure 2 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0028] Figure 3 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0029] Figure 4 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0030] Figure 5 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0031] Figure 6 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0032] Figure 7 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0033] Figure 8 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0034] Figure 9 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure;
[0035] Figure 10 This is a schematic diagram of another microchannel variable flow heat exchanger provided in an embodiment of this disclosure.
[0036] Figure label:
[0037] 1: First row of microchannel tubes; 11: First upper microchannel heat exchange tube; 111: First upper microchannel heat exchange section; 112: First middle microchannel heat exchange section; 113: First lower microchannel heat exchange section; 114: First last microchannel heat exchange section; 1101: First upper inlet; 1102: First upper outlet; 12: First middle microchannel heat exchange tube; 1201: First middle inlet; 1202: First middle outlet;
[0038] 2: Second row of microchannel tubes; 21: Second upper microchannel heat exchange tube; 211: Second upper microchannel heat exchange section; 212: Second middle microchannel heat exchange section; 213: Second lower microchannel heat exchange section; 214: Second final microchannel heat exchange section; 2101: Second upper inlet; 2102: Second upper outlet; 22: Second middle microchannel heat exchange tube;
[0039] 3: Gas collecting tube; 301: First unidirectional guiding component; 31: First tracheal branch tube; 32: Second tracheal branch tube; 33: Third tracheal branch tube;
[0040] 4: Liquid collecting pipe; 401: Second unidirectional guiding component; 41: First liquid pipe branch pipe; 42: Second liquid pipe branch pipe; 43: Third liquid pipe branch pipe;
[0041] 5: Heat dissipation fins;
[0042] 61: First microchannel variable current splitter module; 62: Second microchannel variable current splitter module; 6n: nth microchannel variable current splitter module;
[0043] 7: Dispenser. Detailed Implementation
[0044] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.
[0045] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0046] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.
[0047] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.
[0048] Unless otherwise stated, the term "multiple" means two or more.
[0049] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.
[0050] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.
[0051] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.
[0052] This disclosure provides a microchannel variable flow heat exchanger.
[0053] Optionally, the microchannel variable flow heat exchanger includes a microchannel variable flow module, which comprises a first row of microchannel tube groups 1 and a second row of microchannel tube groups 2. The first row of microchannel tube groups 1 includes multiple first microchannel heat exchange tubes arranged vertically; the second row of microchannel tube groups 2 is arranged horizontally alongside the first row of microchannel tube groups 1, and includes multiple second microchannel heat exchange tubes arranged vertically. The first row of microchannel tube groups 1 is positioned at a higher height than the second row of microchannel tube groups 2, and vertically, the multiple first microchannel heat exchange tubes and the multiple second microchannel heat exchange tubes are staggered.
[0054] This disclosure provides a microchannel variable flow heat exchanger. The microchannel variable flow module has two rows of tubes in the horizontal direction, including a first row of microchannel tubes 1 and a second row of microchannel tubes 2. The first row of microchannel tubes 1 is set at a higher height than the second row of microchannel tubes 2. In the vertical direction, multiple first microchannel heat exchange tubes and multiple second microchannel heat exchange tubes are staggered.
[0055] like Figure 1 As shown, the first microchannel heat exchange tube includes multiple microchannel heat exchange sections, and the second microchannel heat exchange tube includes multiple microchannel heat exchange sections. Furthermore, the microchannel heat exchange sections of the second microchannel heat exchange tube are positioned within the gaps between adjacent microchannel heat exchange sections of the first microchannel heat exchange tube. This improves the heat exchange capacity of the microchannel variable flow heat exchanger within the wind field formed by the fan.
[0056] Optionally, the first row of microchannel tubes 1 includes a serpentine first upper microchannel heat exchange tube 11 located at the top. The first upper microchannel heat exchange tube 11 includes a first upper microchannel heat exchange section 111, a first middle microchannel heat exchange section 112, and a first lower microchannel heat exchange section 113 arranged sequentially from top to bottom. The second row of microchannel tubes 2 includes a serpentine second upper microchannel heat exchange tube 21 located at the top. The second upper microchannel heat exchange tube 21 includes a second upper microchannel heat exchange section 211, a second middle microchannel heat exchange section 212, and a second lower microchannel heat exchange section 213 arranged sequentially from top to bottom.
[0057] In the vertical direction, the second upper microchannel heat exchange section 211 is disposed between the first middle microchannel heat exchange section 112 and the first lower microchannel heat exchange section 113.
[0058] The first upper microchannel heat exchange tube 11 is located at the top of the first row of microchannel tube groups 1. The first upper microchannel heat exchange tube 11 includes a first upper microchannel heat exchange section 111, a first middle microchannel heat exchange section 112, and a first lower microchannel heat exchange section 113 continuously connected to form a serpentine shape. The second upper microchannel heat exchange tube 21 is located at the top of the second row of microchannel tube groups 2. The second upper microchannel heat exchange tube 21 includes a second upper microchannel heat exchange section 211, a second middle microchannel heat exchange section 212, and a second lower microchannel heat exchange section 213 continuously connected to form a serpentine shape. The second upper microchannel heat exchange section 211 is disposed between the first middle microchannel heat exchange section 112 and the first lower microchannel heat exchange section 113. This increases the height difference between the first row of microchannel tube groups 1 and the second row of microchannel tube groups 2.
[0059] It is understandable that the first upper microchannel heat exchange section 111 is the uppermost heat exchange section of the first row of microchannel tube groups 1, and similarly, the second upper microchannel heat exchange section 211 is the uppermost heat exchange section of the second row of microchannel tube groups 2. The first upper microchannel heat exchange section 111 is positioned at a higher height than the second upper microchannel heat exchange section 211 within the entire microchannel variable flow distribution module. Figures 1 to 3 As shown.
[0060] Optionally, each of the first microchannel heat exchange tubes in the first row of microchannel tube groups 1 includes a plurality of microchannel heat exchange sections. For example, the first upper microchannel heat exchange tube 11 also includes a first lower microchannel heat exchange section 114, thus ensuring that the refrigerant inlet and outlet of the multiple first microchannel heat exchange tubes are located at the same end. Similarly, each of the second microchannel heat exchange tubes in the second row of microchannel tube groups 2 includes a plurality of microchannel heat exchange sections. For example, the second upper microchannel heat exchange tube 21 also includes a second lower microchannel heat exchange section 214, thus ensuring that the refrigerant inlet and outlet of the multiple second microchannel heat exchange tubes are located at the same end. Optionally, the multiple inlets and multiple outlets of the refrigerant in the microchannel variable flow distribution module are located at the same end, such as... Figures 1 to 6 As shown.
[0061] Optionally, the first row of microchannel tubes 1 also includes a first middle microchannel heat exchange tube 12 located below the first upper microchannel heat exchange tube 11. The first upper microchannel heat exchange tube 11 is provided with a first upper inlet 1101 and a first upper outlet 1102. The first middle microchannel heat exchange tube 12 is provided with a first middle inlet 1201 and a first middle outlet 1202. The second upper microchannel heat exchange tube 21 is provided with a second upper inlet 2101 and a second upper outlet 2102. The microchannel variable flow heat exchanger also includes a gas collecting pipe 3 and a liquid collecting pipe 4. In the vertical direction, the first upper inlet 1101, the second upper inlet 2101 and the first middle inlet 1201 are connected to the gas collecting pipe 3 from top to bottom, and the first upper outlet 1102, the second upper outlet 2102 and the first middle outlet 1202 are connected to the liquid collecting pipe 4 from top to bottom.
[0062] The microchannel variable flow heat exchanger also includes a gas collecting pipe 3 and a liquid collecting pipe 4. The first upper inlet 1101, the second upper inlet 2101, and the first middle inlet 1201 of the two rows of microchannel heat exchange tubes are all connected to the gas collecting pipe 3, and the first upper outlet 1102, the second upper outlet 2102, and the first middle outlet 1202 of the two rows of microchannel heat exchange tubes are all connected to the liquid collecting pipe 4. In this way, the two rows of microchannel heat exchange tubes form a variable flow connection.
[0063] Furthermore, along the vertical direction, the first upper inlet 1101, the second upper inlet 2101, and the first middle inlet 1201 are arranged sequentially from top to bottom on the gas collecting pipe 3, and the first upper outlet 1102, the second upper outlet 2102, and the first middle outlet 1202 are arranged sequentially from top to bottom on the liquid collecting pipe 4. For example... Figure 6 As shown.
[0064] The first row of microchannel tubes 1 is closer to the fan, where the airflow intensity is greater, while the second row of microchannel tubes 2 is located behind the first row of microchannel tubes 1, further away from the fan, where the airflow intensity is lower. When the microchannel variable flow heat exchanger is used as an evaporator, the gas-liquid two-phase refrigerant in the liquid collecting pipe 4 first enters the second upper microchannel heat exchange tube 21 through the liquid distribution branch pipe, and then enters the first upper microchannel heat exchange tube 11 through the first upper outlet 1102 via the liquid distribution branch pipe. In this way, based on the relative strength of the airflow in the front and rear rows of microchannel heat exchange tubes, the refrigerant in the liquid collecting pipe 4 preferentially flows into the second row of microchannel tubes 2, which is positioned relatively further back. This improves the uniformity of heat exchange capacity between the front and rear rows of microchannel tubes, avoids phenomena such as "dry evaporation" or "excessive liquid supply," and enhances the overall heat exchange capacity of the microchannel variable flow heat exchanger.
[0065] Optionally, along the vertical direction, the distance between two adjacent microchannel heat exchange sections in the same row is h1, and the distance between the first upper outlet 1102 and the second upper outlet 2102 is h2, where h1 < h2 < 2h1. This ensures that the distance between the first upper outlet 1102 and the second upper outlet 2102 is not too large. Figure 7 As shown.
[0066] Optionally, vertically, the second upper inlet 2101 is located above the first upper outlet 1102, and the first middle inlet 1201 is located above the second upper outlet 2102. Optionally, vertically, the first upper inlet 1101, the second upper inlet 2101, the first upper outlet 1102, the first middle inlet 1201, the second upper outlet 2102, and the first middle outlet 1202 are arranged sequentially. Figure 5 As shown.
[0067] In some optional embodiments, the microchannel variable flow heat exchanger further includes a first unidirectional flow member 301 and a second unidirectional flow member 401. The first unidirectional flow member 301 is disposed in the gas collecting pipe 3 and located between the first upper inlet 1101 and the second upper inlet 2101, and the flow direction of the first unidirectional flow member 301 is from the first upper inlet 1101 to the second upper inlet 2101; the second unidirectional flow member 401 is disposed in the liquid collecting pipe 4 and located between the second upper outlet 2102 and the first middle outlet 1202, and the flow direction of the second unidirectional flow member 401 is from the second upper outlet 2102 to the first middle outlet 1202.
[0068] When the microchannel variable flow heat exchanger is used as a condenser, the first unidirectional flow member 301 and the second unidirectional flow member 401 are closed, and the first upper microchannel heat exchange tube 11, the second upper microchannel heat exchange tube 21 and the first middle microchannel heat exchange tube 12 are connected in series. When the microchannel variable flow heat exchanger is used as an evaporator, the first unidirectional flow member 301 and the second unidirectional flow member 401 are open, and the first upper microchannel heat exchange tube 11, the second upper microchannel heat exchange tube 21 and the first middle microchannel heat exchange tube 12 are connected in parallel.
[0069] The gas collecting pipe 3 includes a first tracheal branch pipe 31 connected to the first upper inlet 1101, a second tracheal branch pipe 32 connected to the second upper inlet 2101, and a third tracheal branch pipe 33 connected to the first middle inlet 1201. A first one-way guiding member 301 is disposed between the first tracheal branch pipe 31 and the second tracheal branch pipe 32 of the gas collecting pipe 3. Optionally, the first one-way guiding member 301 includes a first one-way valve.
[0070] The liquid collecting pipe 4 includes a first liquid pipe branch pipe 41 connected to the first upper outlet 1102, a second liquid pipe branch pipe 42 connected to the second upper outlet 2102, and a third liquid pipe branch pipe 43 connected to the first middle outlet 1202. A second one-way guiding member 401 is disposed between the second liquid pipe branch pipe 42 and the third liquid pipe branch pipe 43 of the liquid collecting pipe 4. Optionally, the second one-way guiding member 401 includes a second one-way valve. Figure 6 As shown.
[0071] When the microchannel variable flow heat exchanger is used as a condenser, the first unidirectional flow member 301 and the second unidirectional flow member 401 are closed, and the refrigerant flowing in from the inlet of the gas collecting pipe 3 flows sequentially through the first upper microchannel heat exchange tube 11, the second upper microchannel heat exchange tube 21, and the first middle microchannel heat exchange tube 12. Optionally, the second row of microchannel tubes 2 may also include a second middle microchannel heat exchange tube 22. Thus, when the microchannel variable flow heat exchanger is used as a condenser, the refrigerant flowing in from the inlet of the gas collecting pipe 3 first flows through the first upper microchannel heat exchange tube 11 and the second upper microchannel heat exchange tube 21, and then sequentially flows through the first middle microchannel heat exchange tube 12 and the second middle microchannel heat exchange tube 22. Figure 8 As shown.
[0072] When the microchannel variable flow heat exchanger is used as an evaporator, the first unidirectional flow member 301 and the second unidirectional flow member 401 are connected, and the refrigerant flowing in from the inlet of the liquid collecting pipe 4 flows through the first upper microchannel heat exchange tube 11, the second upper microchannel heat exchange tube 21, and the first middle microchannel heat exchange tube 12, respectively. Optionally, the second row of microchannel tubes 2 may also include a second middle microchannel heat exchange tube 22. In this case, the refrigerant flowing in from the inlet of the liquid collecting pipe 4 flows through the first upper microchannel heat exchange tube 11, the second upper microchannel heat exchange tube 21, the first middle microchannel heat exchange tube 12, and the second middle microchannel heat exchange tube 22, respectively. Figure 9 As shown.
[0073] Optionally, the microchannel variable flow distribution module also includes a heat dissipation fin assembly, which includes multiple heat dissipation fins 5, wherein the heat dissipation fins 5 are connected to the microchannel heat exchange tube.
[0074] In this embodiment, the heat dissipation fins 5 of the microchannel variable flow divider module are insert-type, so that the heat dissipation fins 5 are connected to the microchannel flat tube in an insert-type manner, which improves the condensate drainage effect of the microchannel variable flow divider heat exchanger.
[0075] Optionally, there may be multiple microchannel variable shunt modules, and these multiple microchannel variable shunt modules may be arranged vertically.
[0076] Using a single microchannel heat exchange tube as a heat exchange branch, when there are many heat exchange branches, the entire heat exchanger can be divided into multiple microchannel variable flow distribution modules, such as... Figure 10 As shown. The microchannel variable flow heat exchanger also includes a distributor 7, which is located at one end of the liquid collection pipe 4 to connect multiple microchannel variable flow modules.
[0077] This disclosure also provides an air conditioner that includes the aforementioned microchannel variable flow heat exchanger.
[0078] The air conditioner also includes a fan, which is located on one side of the microchannel variable flow heat exchanger, wherein the first row of microchannel tubes 1 is located close to the fan.
[0079] Optionally, the microchannel variable flow heat exchanger can be used as an outdoor heat exchanger, and the fan can also be an outdoor fan. The first row of microchannel tubes 1 is installed at a relatively high height and close to the fan.
[0080] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A microchannel variable flow heat exchanger, characterized in that, Including a microchannel variable current splitter module, which includes: The first row of microchannel tubes (1) includes multiple first microchannel heat exchange tubes arranged vertically; and, The second row of microchannel tubes (2) is arranged horizontally alongside the first row of microchannel tubes (1). The second row of microchannel tubes (2) includes multiple second microchannel heat exchange tubes arranged vertically. Among them, the setting height of the first row of microchannel tube group (1) is higher than the setting height of the second row of microchannel tube group (2), and in the vertical direction, multiple first microchannel heat exchange tubes and multiple second microchannel heat exchange tubes are staggered.
2. The microchannel variable flow heat exchanger according to claim 1, characterized in that, The first row of microchannel tubes (1) includes a serpentine first upper microchannel heat exchange tube (11) located at the top. The first upper microchannel heat exchange tube (11) includes a first upper microchannel heat exchange section (111), a first middle microchannel heat exchange section (112), and a first lower microchannel heat exchange section (113) arranged sequentially from top to bottom. The second row of microchannel tubes (2) includes a serpentine second upper microchannel heat exchange tube (21) located at the top. The second upper microchannel heat exchange tube (21) includes a second upper microchannel heat exchange section (211), a second middle microchannel heat exchange section (212), and a second lower microchannel heat exchange section (213) arranged sequentially from top to bottom. In the vertical direction, the second upper microchannel heat exchange section (211) is located between the first middle microchannel heat exchange section (112) and the first lower microchannel heat exchange section (113).
3. The microchannel variable flow heat exchanger according to claim 2, characterized in that, The first row of microchannel tubes (1) also includes a first middle microchannel heat exchange tube (12) located below the first upper microchannel heat exchange tube (11). The first upper microchannel heat exchange tube (11) is provided with a first upper inlet (1101) and a first upper outlet (1102). The first middle microchannel heat exchange tube (12) is provided with a first middle inlet (1201) and a first middle outlet (1202). The second upper microchannel heat exchange tube (21) is provided with a second upper inlet (2101) and a second upper outlet (2102). The microchannel variable flow heat exchanger also includes a gas collecting pipe (3) and a liquid collecting pipe (4). In the vertical direction, the first upper inlet (1101), the second upper inlet (2101) and the first middle inlet (1201) are connected to the gas collecting pipe (3) from top to bottom, and the first upper outlet (1102), the second upper outlet (2102) and the first middle outlet (1202) are connected to the liquid collecting pipe (4) from top to bottom.
4. The microchannel variable flow heat exchanger according to claim 3, characterized in that, In the vertical direction, the second upper inlet (2101) is located above the first upper outlet (1102), and the first middle inlet (1201) is located above the second upper outlet (2102).
5. The microchannel variable flow heat exchanger according to claim 4, characterized in that, Along the vertical direction, the distance between two adjacent microchannel heat exchange sections in the same row is h1, and the distance between the first upper outlet (1102) and the second upper outlet (2102) is h2. Where h1 < h2 < 2h1.
6. The microchannel variable flow heat exchanger according to claim 5, characterized in that, Also includes: The first unidirectional guiding component (301) is disposed in the gas collecting pipe (3) and located between the first upper inlet (1101) and the second upper inlet (2101). The guiding direction of the first unidirectional guiding component (301) is from the first upper inlet (1101) to the second upper inlet (2101). and, A second unidirectional guiding component (401) is disposed in the liquid collecting pipe (4) and located between the second upper outlet (2102) and the first middle outlet (1202), and the guiding direction of the second unidirectional guiding component (401) is from the second upper outlet (2102) to the first middle outlet (1202). When the microchannel variable flow heat exchanger is used as a condenser, the first unidirectional flow member (301) and the second unidirectional flow member (401) are closed, and the first upper microchannel heat exchange tube (11), the second upper microchannel heat exchange tube (21) and the first middle microchannel heat exchange tube (12) are connected in series in sequence; when the microchannel variable flow heat exchanger is used as an evaporator, the first unidirectional flow member (301) and the second unidirectional flow member (401) are open, and the first upper microchannel heat exchange tube (11), the second upper microchannel heat exchange tube (21) and the first middle microchannel heat exchange tube (12) are connected in parallel.
7. The microchannel variable flow heat exchanger according to claim 1, characterized in that, The microchannel variable current splitter module also includes: The heat dissipation fin assembly includes multiple heat dissipation fins (5). Among them, the heat dissipation fins (5) are connected to the microchannel heat exchange tube.
8. The microchannel variable flow heat exchanger according to any one of claims 1 to 7, characterized in that, There are multiple microchannel variable current splitter modules, and these multiple microchannel variable current splitter modules are arranged vertically.
9. An air conditioner, characterized in that, Including the microchannel variable flow heat exchanger as described in any one of claims 1 to 8.
10. The air conditioner according to claim 9, characterized in that, Also includes: A fan is located on one side of the microchannel variable flow heat exchanger, wherein the first row of microchannel tubes (1) is located close to the fan.