Multi-pipeline heat exchanger and heat pump system

Abstract

The utility model discloses a multi-pipeline heat exchanger and a heat pump system with the multi-pipeline heat exchanger, the multi-pipeline heat exchanger comprises a fin assembly, the fin assembly comprises a plurality of heat exchange fins, the plurality of heat exchange fins are sequentially stacked at intervals along the transverse direction, the space where the fin assembly is located is a heat exchange space, and the heat exchange space is provided with a plurality of first areas; the multiple first areas are sequentially arranged in the vertical direction; the tube pass assembly comprises a plurality of pipelines, each pipeline comprises a plurality of tube sets, the tube sets are arranged in the first areas in a one-to-one correspondence mode, each tube set comprises a plurality of tube sections, and each tube section transversely penetrates through the fin assembly. The multi-pipeline heat exchanger can serve as evaporators or condensers of the multiple heat pump units at the same time. When part of the heat pump units break down, the other heat pump units can still support operation of the heat pump equipment, the multi-pipeline heat exchanger still covers the section of the whole airflow channel, the whole section area of the airflow channel can still participate in heat transfer, and the remaining performance of the heat pump system can be brought into full play.

Description

Technical Field

[0001] This utility model relates to the field of heat pump technology, and in particular to a multi-pipe heat exchanger, a heat pump system, and a heat pump device. Background Technology

[0002] Heat exchangers are a crucial component of heat pump systems; the condenser and evaporator in a heat pump system are essentially heat exchangers. Some large heat pump systems have multiple heat pump units, while conventional heat exchangers only have a single pipe. This means that the condensers / evaporators of multiple heat pump units can only be arranged side-by-side in the cross-section of the airflow channel. When some heat pump units fail, although the remaining units can still support the operation of the heat pump equipment, their condensers / evaporators can only cover a portion of the cross-section of the airflow channel, not the entire cross-section. This means that a portion of the airflow channel does not participate in heat transfer, which is detrimental to fully utilizing the remaining performance of the heat pump system. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a multi-pipe heat exchanger and heat pump system.

[0004] The multi-pipe heat exchanger according to a first aspect embodiment of the present invention includes:

[0005] A fin assembly includes multiple heat exchange fins, which are stacked sequentially at intervals along the lateral direction. The space in which the fin assembly is located is called a heat exchange space. The heat exchange space has multiple first regions, which are arranged sequentially along the vertical direction.

[0006] The tube assembly includes multiple tubes, each tube including multiple tube groups, the multiple tube groups being disposed one-to-one in multiple first regions, each tube group including multiple tube segments, each tube segment passing through the fin assembly laterally.

[0007] The multi-pipe heat exchanger according to the first aspect of this utility model has at least the following technical effects: by setting multiple pipes, multiple pipes can be connected one-to-one to multiple heat pump units during use, so that the multi-pipe heat exchanger can simultaneously serve as the evaporator or condenser of multiple heat pump units; when some of the heat pump units fail, the other heat pump units can still support the operation of the heat pump equipment; moreover, the multi-pipe heat exchanger still covers the entire cross-section of the airflow channel, and the entire cross-sectional area of ​​the airflow channel can still participate in heat transfer, which is conducive to making full use of the remaining performance of the heat pump system.

[0008] According to some embodiments of the present invention, multiple pipe groups located in the same first region are stacked in the front-back direction.

[0009] According to some embodiments of the present invention, multiple pipe segments belonging to the same pipe group are arranged sequentially along the vertical direction.

[0010] According to some embodiments of the present invention, the heat exchange space has multiple second regions, which are arranged sequentially along the front-back direction; the number of the first regions, the number of the second regions, and the number of the pipes are the same, and multiple pipe groups belonging to the same pipe are arranged one-to-one in the multiple second regions.

[0011] According to some embodiments of the present invention, multiple pipe groups belonging to the same pipeline are connected in series.

[0012] According to some embodiments of the present invention, multiple pipe segments belonging to the same pipe group are connected in parallel.

[0013] According to some embodiments of the present invention, a frame is provided on the outer side of the fin assembly.

[0014] According to a second aspect of the present invention, a heat pump system includes a plurality of heat pump units and the aforementioned multi-pipe heat exchanger. Each heat pump unit has an evaporator / condenser, and the plurality of pipes are connected one-to-one to the plurality of heat pump units, such that the evaporator / condenser of each heat pump unit is the multi-pipe heat exchanger.

[0015] The heat pump system according to the second aspect of the present invention has at least the following technical effects: the multi-pipe heat exchanger simultaneously serves as the evaporator or condenser of multiple heat pump units. When some of the heat pump units fail, the other heat pump units can still support the operation of the heat pump equipment. Moreover, the multi-pipe heat exchanger still covers the entire cross-section of the airflow channel, and the entire cross-sectional area of ​​the airflow channel can still participate in heat transfer, which is conducive to making full use of the remaining performance of the heat pump system.

[0016] According to some embodiments of the present invention, the number of multi-pipe heat exchangers is two, the evaporator of each heat pump unit is one of the multi-pipe heat exchangers, and the condenser of each heat pump unit is the other multi-pipe heat exchanger.

[0017] The heat pump device according to a third aspect embodiment of the present invention includes the heat pump system described above.

[0018] The heat pump device according to the third aspect embodiment of the present invention has at least the following technical effects: by setting up the above-mentioned heat pump system, it is beneficial to make full use of the remaining performance of the heat pump system when some heat pump units fail.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a cross-sectional structural schematic diagram of a multi-pipe heat exchanger according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the heat pump system according to an embodiment of the present invention.

[0023] In the attached image:

[0024] 001-Pipe section; 010-Pipe assembly; 100-Frame; 200-Heat exchange fins; 310-First pipeline; 320-Second pipeline; 330-Third pipeline; 510-Compressor; 520-Condenser; 530-Expansion valve; 540-Evaporator. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number, while "above," "below," "within," etc., are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] The following is for reference. Figure 1 and Figure 2This invention describes a multi-pipe heat exchanger and heat pump system according to embodiments of the present invention.

[0029] The multi-pipe heat exchanger of the first aspect of this utility model includes a fin assembly and a tube-side assembly;

[0030] The fin assembly includes multiple heat exchange fins 200, which are stacked sequentially and at intervals along the transverse direction. The heat exchange fins 200 can be made of stainless steel, giving them good corrosion resistance, strength, and rigidity; or they can be made of aluminum alloy, giving them good thermal conductivity and strength, enabling them to withstand high temperature and high pressure environments, while also being lightweight and having good corrosion resistance, making them less susceptible to corrosion damage. The space in which the fin assembly is located is called the heat exchange space, which has multiple first regions arranged sequentially along the vertical direction.

[0031] The tube assembly includes multiple pipes, each pipe comprising multiple tube groups 010. These tube groups 010 are arranged one-to-one in multiple first regions. Each tube group 010 includes multiple tube segments 001, each segment 001 extending laterally through the fin assembly. The multiple pipes are not interconnected. For any given pipe, each first region has its own tube group 010, ensuring heat transfer between the pipes and the air across the entire heat exchange space. Each tube group 010 includes multiple tube segments 001. For any given tube segment 001, the segment extends laterally through all heat exchange fins 200 and contacts all fins 200, facilitating heat transfer to the fins 200. The tube segment 001 can be made of copper, which has a high thermal conductivity, enabling efficient heat transfer and improving the heat exchanger's efficiency.

[0032] By setting up multiple pipelines, multiple pipelines can be connected one-to-one to multiple heat pump units during use, so that the multi-pipe heat exchanger can simultaneously serve as the evaporator 540 or condenser 520 of multiple heat pump units. When some heat pump units fail, the other heat pump units can still support the operation of the heat pump equipment. Moreover, the multi-pipe heat exchanger still covers the entire cross-section of the airflow channel, and the entire cross-sectional area of ​​the airflow channel can still participate in heat transfer, which is conducive to making full use of the remaining performance of the heat pump system.

[0033] In some embodiments of this utility model, multiple pipe groups 010 located in the same first region are stacked in the front-back direction. For any one of the first regions, each pipeline has a pipe group 010 disposed therein, so that multiple pipe groups 010 are provided in the first region; by setting multiple pipe groups 010 stacked in the front-back direction, when the airflow passes through the heat exchange space in the front-back direction, the airflow can transfer heat with the multiple pipe groups 010, and the airflow can be fully heated or cooled, which meets the actual needs.

[0034] In some embodiments of this utility model, multiple pipe segments 001 belonging to the same pipe group 010 are arranged sequentially in a vertical direction. This helps to reduce the front-to-back dimensions of the pipe group 010, thereby reducing the front-to-back dimensions of the multi-pass heat exchanger and making full use of space.

[0035] In some embodiments of this utility model, the heat exchange space has multiple second regions, which are arranged sequentially along the front-to-back direction. The number of first regions, the number of second regions, and the number of pipes are the same, and multiple pipe groups 010 belonging to the same pipe are arranged one-to-one in the multiple second regions. Taking the airflow passing through the heat exchange space from front to back as an example, it can be understood that for multiple pipe groups 010 stacked in one of the first regions, the heat exchange efficiency of the pipe group 010 closer to the front is higher. If multiple pipe groups 010 of one pipe are all located on the front side of the heat exchange space, and multiple pipe groups 010 of another pipe are all located on the rear side of the heat exchange space, the heat exchange efficiency of the two pipes will be significantly different, which is not conducive to the stable operation of the heat pump system.

[0036] Therefore, in this embodiment, an overlapping area is provided between any first region and any second region, and each overlapping region is provided with a pipe group 010; taking the example that the number of first regions, the number of second regions, and the number of pipes are all three, the three pipes are respectively referred to as the first pipe 310, the second pipe 320, and the third pipe 330; refer to Figure 1 In the first region at the bottom, a pipe group 010 of the first pipe 310, a pipe group 010 of the second pipe 320, and a pipe group 010 of the third pipe 330 are arranged sequentially from front to back. In the first region in the middle, a pipe group 010 of the second pipe 320, a pipe group 010 of the third pipe 330, and a pipe group 010 of the first pipe 310 are arranged sequentially from front to back. In the first region at the top, a pipe group 010 of the third pipe 330, a pipe group 010 of the first pipe 310, and a pipe group 010 of the second pipe 320 are arranged sequentially from front to back. Thus, each pipe has a pipe group 010 located in the second region at the front, a pipe group 010 located in the second region at the middle, and a pipe group 010 located in the second region at the rear. This ensures that the heat exchange efficiency of the multiple pipes is relatively balanced, which is beneficial to the stable operation of the heat pump system.

[0037] In some embodiments of this invention, multiple pipe groups 010 belonging to the same pipeline are connected in series. This allows the refrigerant in the heat pump unit to pass through the fin assembly multiple times as it flows along the pipeline, ensuring sufficient heat absorption or dissipation. Of course, in other embodiments of this invention, multiple pipe groups 010 belonging to the same pipeline can also be connected in parallel.

[0038] In some embodiments of this utility model, multiple pipe segments 001 belonging to the same pipe group 010 are connected in parallel. This reduces the resistance of the refrigerant flowing through the pipe. Of course, in other embodiments of this utility model, multiple pipe segments 001 belonging to the same pipe group 010 can also be connected in series.

[0039] In some embodiments of this utility model, a frame 100 is provided on the outer side of the fin assembly. A heat exchange space is disposed inside the frame 100. The frame 100 is rectangular and includes a left side plate, a top plate, a right side plate, and a bottom plate. The left side plate is located on the left side of the heat exchange space, the top plate is located at the top of the heat exchange space, the right side plate is located on the right side of the heat exchange space, and the bottom plate is located at the bottom of the heat exchange space. The left side plate, top plate, right side plate, and bottom plate are connected end-to-end to form the frame 100. The left side plate and right side plate are parallel to each other, and the top plate and bottom plate are parallel to each other. The heat exchange fins 200 can be fixedly connected to the frame 100, or the heat exchange fins 200 can be fixed relative to the frame 100 by connecting to a pipeline. By providing the frame 100, it is convenient to install the multi-pass heat exchanger into the heat pump equipment.

[0040] The heat pump system of the second aspect of this utility model includes multiple heat pump units and the aforementioned multi-pipe heat exchanger. Each heat pump unit has an evaporator 540 / condenser 520, and multiple pipes are connected one-to-one to the multiple heat pump units, so that the evaporator 540 / condenser 520 of each heat pump unit is a multi-pipe heat exchanger. The multi-pipe heat exchanger simultaneously serves as the evaporator 540 or condenser 520 of multiple heat pump units. When some heat pump units fail, the other heat pump units can still support the operation of the heat pump equipment. Moreover, the multi-pipe heat exchanger still covers the entire cross-section of the airflow channel, and the entire cross-sectional area of ​​the airflow channel can still participate in heat transfer, which is beneficial to fully utilize the remaining performance of the heat pump system.

[0041] In some embodiments of this invention, the number of multi-pipe heat exchangers is two. The evaporator 540 of each heat pump unit is one of the multi-pipe heat exchangers, and the condenser 520 of each heat pump unit is the other multi-pipe heat exchanger. One multi-pipe heat exchanger simultaneously serves as the evaporator 540 for multiple heat pump units, and the other multi-pipe heat exchanger simultaneously serves as the condenser 520 for multiple heat pump units. This facilitates fully utilizing the remaining performance of the heat pump system when some heat pump units fail. (Refer to...) Figure 2Taking a heat pump unit with three units as an example, each heat pump unit has a compressor 510 and an expansion valve 530. The three heat pump units are referred to as the first unit, the second unit, and the third unit, respectively. The refrigerant outlet and refrigerant inlet of the compressor 510 in the first unit are connected in sequence by the first pipe 310 of the condenser 520, the expansion valve 530, and the first pipe 310 of the evaporator 540. The refrigerant outlet and refrigerant inlet of the compressor 510 in the second unit are connected in sequence by the second pipe 320 of the condenser 520, the expansion valve 530, and the second pipe 320 of the evaporator 540. The refrigerant outlet and refrigerant inlet of the compressor 510 in the third unit are connected in sequence by the third pipe 330 of the condenser 520, the expansion valve 530, and the third pipe 330 of the evaporator 540.

[0042] The heat pump device according to a third aspect embodiment of this utility model includes the heat pump system described above. By setting up the heat pump system described above, it is beneficial to fully utilize the remaining performance of the heat pump system when some heat pump units fail.

[0043] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A multi-pipe heat exchanger, characterized in that, include: The fin assembly includes multiple heat exchange fins (200), which are stacked sequentially at intervals along the lateral direction. The space in which the fin assembly is located is called the heat exchange space. The heat exchange space has multiple first regions, which are arranged sequentially along the vertical direction. The tube assembly includes multiple tubes, each of which includes multiple tube groups (010), and the multiple tube groups (010) are disposed one-to-one in multiple first regions. Each tube group (010) includes multiple tube segments (001), and each tube segment (001) extends laterally through the fin assembly.

2. The multi-pipe heat exchanger according to claim 1, characterized in that: Multiple tube groups (010) located in the same first region are stacked in the front-to-back direction.

3. The multi-pipe heat exchanger according to claim 2, characterized in that: Multiple pipe segments (001) belonging to the same pipe group (010) are arranged vertically in sequence.

4. The multi-pipe heat exchanger according to claim 1, characterized in that: The heat exchange space has multiple second regions, which are arranged sequentially in the front-back direction; the number of the first regions, the number of the second regions, and the number of the pipelines are the same, and multiple pipe groups (010) belonging to the same pipeline are arranged one-to-one in the multiple second regions.

5. The multi-pipe heat exchanger according to claim 1, characterized in that: Multiple pipe groups (010) belonging to the same pipeline are connected in series.

6. The multi-pipe heat exchanger according to claim 1, characterized in that: Multiple pipe segments (001) belonging to the same pipe group (010) are connected in parallel.

7. The multi-pipe heat exchanger according to claim 1, characterized in that: The fin assembly is provided with a frame (100) on its outer side.

8. A heat pump system, characterized in that: It includes multiple heat pump units and a multi-pipe heat exchanger as described in any one of claims 1 to 7, each of the heat pump units having an evaporator (540) / condenser (520), and the multiple pipes being connected one-to-one to the multiple heat pump units, such that the evaporator (540) / condenser (520) of each heat pump unit is the multi-pipe heat exchanger.

9. The heat pump system according to claim 8, characterized in that: The number of the multi-pipe heat exchangers is two, with the evaporator (540) of each heat pump unit being one of the multi-pipe heat exchangers and the condenser (520) of each heat pump unit being the other multi-pipe heat exchanger.

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