Heat exchange assembly, heat storage device and air conditioning system

Abstract

The application provides a heat exchange assembly, a heat storage device and an air conditioning system, comprising: a first collecting pipe, a first inlet and outlet for fluid in and out are arranged on the first collecting pipe; a plurality of first distributing pipes, each first distributing pipe is arranged on the first collecting pipe at intervals; a plurality of pipe groups, each first distributing pipe and each pipe group are in one-to-one correspondence; the plurality of pipe groups comprise two side pipe groups and a plurality of inner pipe groups, the two side pipe groups are arranged on the two sides of the heat exchange assembly respectively, and each inner pipe group is arranged between the two side pipe groups; each pipe group is composed of a plurality of parallel branch pipes, the branch pipes are arranged in the first preset direction in sequence to form a plurality of longitudinal flow paths; wherein the number of the longitudinal flow paths of the two side pipe groups is less than the number of the longitudinal flow paths of each inner pipe group. The heat exchange assembly, the heat storage device and the air conditioning system solve the technical problem that the heat storage device has a single flow path in the related art, which leads to inconsistent heat exchange efficiency and affects the heat exchange effect.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, specifically to a heat exchange component, a heat storage device, and an air conditioning system. Background Technology

[0002] Currently, when heat pump air conditioning systems operate in heating mode in winter when outdoor temperatures are low, the surface temperature of the outdoor unit's heat exchanger can easily drop below 0°C. Moist air will form a frost layer on the heat exchanger surface, reducing the heat exchange efficiency, affecting the energy consumption of the air conditioning system, and even damaging the entire system. During normal defrosting, the outdoor unit changes from an evaporator to a condenser, and the indoor unit shuts off for defrosting. However, this also means that the air conditioning system cannot continue to heat while defrosting. Therefore, a heat storage device can be added to the outdoor side of the air conditioner to provide heat while the air conditioning system is defrosting, ensuring that the air conditioning system can provide continuous heating.

[0003] Existing phase change heat storage modules have simple flow path structures and single flow path channels. Relying solely on flat tubes results in poor heat exchange efficiency, and the flat tubes are arranged too densely. As the fluid flows from inlet to outlet, the heat exchange efficiency gradually decreases, making it impossible to fully utilize the performance of the heat storage material and greatly extending the defrosting time.

[0004] Therefore, existing technologies need further development. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a heat exchange component, a heat storage device, and an air conditioning system to solve the technical problem in the related art where the heat storage device has a single flow path, resulting in inconsistent heat exchange efficiency and affecting the heat exchange effect.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: a heat exchange assembly is provided, comprising: a first manifold, wherein the first manifold is provided with a first inlet and outlet for fluid entry and exit; a plurality of first branch pipes, wherein each first branch pipe is disposed at intervals on the first manifold; a plurality of pipe groups, wherein each first branch pipe is connected to each pipe group in a one-to-one correspondence; the plurality of pipe groups includes two side pipe groups and a plurality of inner pipe groups, wherein the two side pipe groups are respectively disposed on both sides of the heat exchange assembly, and each inner pipe group is disposed between the two side pipe groups; each pipe group is composed of a plurality of parallel branch pipes, wherein the branch pipes are arranged sequentially along a first preset direction to form a plurality of longitudinal flow paths; wherein the number of longitudinal flow paths in the two side pipe groups is less than the number of longitudinal flow paths in each inner pipe group.

[0007] Furthermore, the heat exchange assembly also includes: a plurality of second branch pipes, each second branch pipe being arranged in a one-to-one correspondence with each pipe group and connected in a one-to-one correspondence with each pipe group; a second manifold, each second branch pipe being connected to a second manifold, each second branch pipe being arranged at intervals on the second manifold; the second manifold is provided with a second inlet and outlet for fluid entry and exit, and the second manifold is arranged opposite to the first manifold.

[0008] Furthermore, the heat exchange assembly also includes: a first flow pipe, one side of which is connected to each of the first branch pipes, and the other side of which is connected to each of the pipe groups; and a second flow pipe, one side of which is connected to each of the second branch pipes, and the other side of which is connected to each of the pipe groups.

[0009] Furthermore, each branch pipe is connected to a plurality of transverse connecting pipes at one end. Each transverse connecting pipe is located between the first flow pipe and the second flow pipe. Each transverse connecting pipe is arranged parallel to each other along the second preset direction to form a transverse flow path. Each transverse connecting pipe is transversely connected to the branch pipe. The extension direction of the first preset direction is perpendicular to the extension direction of the second preset direction.

[0010] Furthermore, each branch pipe is connected to multiple longitudinal connecting pipes at the end furthest from the transverse connecting pipe, and the longitudinal connecting pipes are set perpendicular to the transverse connecting pipes; each longitudinal connecting pipe is longitudinally connected to the branch pipe to form a longitudinal flow path.

[0011] Furthermore, the number of lateral flow paths is the same for each pipe group.

[0012] Furthermore, each inner tube group includes a first inner tube group and a second inner tube group, with four first branch tubes and four second branch tubes.

[0013] Furthermore, the first manifold, the second manifold, each of the first branch pipes, each of the second branch pipes, the first flow pipe and the second flow pipe are all round pipes, and the branch pipes are flat pipes with a cuboid structure.

[0014] Furthermore, fins are provided on the outer surface of multiple tube assemblies, and the fins have a cuboid structure.

[0015] A heat storage device includes a shell and a receiving cavity formed inside the shell. The receiving cavity is provided with heat storage material and a heat exchange component as described above is also provided inside the receiving cavity, through which heat exchange is performed between the heat exchange component and the heat storage material.

[0016] An air conditioning system includes a heat storage device as described above.

[0017] Beneficial effects:

[0018] 1. The heat exchange component of the present invention, by distributing multiple flow paths, ensures that the heat exchange efficiency of each path remains basically consistent, thereby promoting a highly efficient heat exchange state between the refrigerant and the heat storage material and improving the heat exchange efficiency of the heat exchange component.

[0019] 2. The heat storage device of the present invention uses parallel flow microchannels to achieve uniform distribution of each flow path by adjusting the number of different flow paths passing through the flat tubes. At the same time, with the corresponding fin arrangement, the heat exchange area is effectively increased while reducing the overall number of flat tubes, thereby further improving the heat exchange efficiency.

[0020] 3. The air conditioning system of the present invention improves heat exchange efficiency, reduces heat exchange defrosting time, and enhances user comfort. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the heat exchange component used in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the transverse connecting pipe of the heat exchange component used in an embodiment of the present invention from one perspective;

[0023] Figure 3 This is a schematic diagram of the longitudinal connecting pipe of the heat exchange component used in an embodiment of the present invention;

[0024] Figure 4 This is a structural schematic diagram of the transverse connecting pipe of the heat exchange component used in an embodiment of the present invention from another perspective;

[0025] Figure 5 This is a schematic diagram of the structure of the fins of the heat storage device used in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the heat storage device used in an embodiment of the present invention.

[0027] The above figures include the following reference numerals:

[0028] 1. First manifold; 11. First inlet / outlet; 2. First branch pipe; 3. Pipe assembly; 31. Side pipe assembly; 32. Inner pipe assembly; 321. First inner pipe assembly; 322. Second inner pipe assembly; 33. Branch pipe; 34. Horizontal connecting pipe; 35. Longitudinal connecting pipe; 4. Second manifold; 41. Second inlet / outlet; 5. Second branch pipe; 6. First flow pipe; 7. Second flow pipe; 8. Fin; 9. Shell; 91. Receiving cavity. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] According to an embodiment of the present invention, a heat exchange assembly is provided; please refer to [link / reference]. Figures 1 to 6 The heat exchange assembly includes: a first manifold 1, which has a first inlet and outlet 11 for fluid entry and exit; multiple first branch pipes 2, which are spaced apart on the first manifold 1; multiple pipe groups 3, which are connected one-to-one with each first branch pipe 2 and each pipe group 3; the multiple pipe groups 3 include two side pipe groups 31 and multiple inner pipe groups 32, the two side pipe groups 31 are respectively arranged on both sides of the heat exchange assembly, and each inner pipe group 32 is arranged between the two side pipe groups 31; each pipe group 3 is composed of several parallel branch pipes 33, which are arranged sequentially along a first preset direction to form multiple longitudinal flow paths; wherein, the number of longitudinal flow paths in the two side pipe groups 31 is less than the number of longitudinal flow paths in each inner pipe group 32.

[0031] In this embodiment, the heat exchange assembly has several parallel branch pipes 33 arranged sequentially along a first preset direction to form multiple longitudinal flow paths. Each pipe group 3 consists of a different number of longitudinal flow paths. The number of longitudinal flow paths in the side pipe groups 31 is less than the number of the several inner pipe groups 32 in the middle. The side pipe groups 31 and inner pipe groups 32 are arranged sequentially along the first preset direction, and the inlet of each pipe group 3 is connected to a respective first branch pipe 2. Refrigerant flows into the first manifold 1 from the first inlet / outlet 11 and enters each pipe group 3 through multiple first branch pipes 2 spaced apart on the first manifold 1. Because the refrigerant releases some energy during its inflow into the heat exchange assembly, with less energy released in the middle, the heat exchange assembly's pipe groups 3 are divided into several pipes to ensure uniform refrigerant distribution within the assembly. Furthermore, the number of longitudinal flow paths in the side pipe groups 31 is set to be less than the number of longitudinal flow paths in the inner pipe group 32. This ensures uniform distribution of the refrigerant entering the heat exchange assembly, thereby maintaining consistent heat exchange efficiency in each branch pipe 33 and providing optimal heat exchange performance. The heat exchange assembly used in this embodiment solves the technical problem in related technologies where a single flow path in the heat storage device leads to inconsistent heat exchange efficiency, affecting the overall heat exchange effect.

[0032] See Figure 2In this embodiment, the heat exchange assembly further includes: a plurality of second branch pipes 5, each second branch pipe 5 being arranged one-to-one with each pipe group 3 and connected one-to-one with each pipe group 3; a second manifold 4, each second branch pipe 5 being connected to a second manifold 4, and the second branch pipes 5 being arranged at intervals on the second manifold 4; the second manifold 4 being provided with second inlet and outlet 41 for fluid entry and exit, and the second manifold 4 being arranged opposite to the first manifold 1. The second manifold 4 is arranged at a position opposite to the first manifold 1, and a plurality of second branch pipes 5 are arranged at intervals on the second manifold 4, with the outlet of each pipe group 3 communicating with each second branch pipe 5. Refrigerant flows into each pipe group 3 from the first inlet and outlet 11, then flows into each second branch pipe 5 through the outlet of each pipe group 3 and collects in the second manifold 4, and is discharged from the second inlet and outlet 41.

[0033] Specifically, each pipe group 3, the second branch pipe 5 and the first branch pipe 2 are set to the same number, the first manifold 1 and the second manifold 4 are one, and the refrigerant can flow in from the first inlet and outlet 11 and discharge from the second inlet and outlet 41; or it can flow in from the second inlet and outlet 41 and then flow out from the first inlet and outlet 11.

[0034] See Figure 1 and Figure 2 In this embodiment, the heat exchange assembly further includes: a first flow pipe 6, one side of which is connected to each of the first branch pipes 2, and the other side of which is connected to each of the pipe groups 3; and a second flow pipe 7, one side of which is connected to each of the second branch pipes 5, and the other side of which is connected to each of the pipe groups 3. The first flow pipe 6 is arranged between several first branch pipes 2 and each pipe group 3, and the second flow pipe 7 is arranged between several second branch pipes 5 and each pipe group 3. This increases the number of inlet and outlet channels for the refrigerant in each pipe group 3, providing a wider flow range for the refrigerant within a certain space. This improves the uniformity of refrigerant distribution, ensuring that the refrigerant medium is always in a highly efficient heat-releasing state when flowing in the branch pipes 33, thus greatly improving the heat exchange efficiency between the refrigerant and the external heat storage material.

[0035] See Figures 2 to 4In the heat exchange assembly of this embodiment, one end of each branch pipe 33 is connected to a plurality of transverse connecting pipes 34. Each transverse connecting pipe 34 is disposed between the first flow pipe 6 and the second flow pipe 7. The transverse connecting pipes 34 are arranged parallel to each other along a second preset direction to form a transverse flow path. Each transverse connecting pipe 34 is transversely connected to the branch pipe 33. The extension direction of the first preset direction is perpendicular to the extension direction of the second preset direction. Each branch pipe 33 is arranged along the first preset direction, and each transverse connecting pipe 34 is arranged along the second preset direction. The extension direction of the first preset direction is perpendicular to the extension direction of the second preset direction. One end of each branch pipe 33 is connected to a plurality of transverse connecting pipes 34. Between the first flow pipe 6 and the second flow pipe 7, the branch pipes 33 are arranged longitudinally, and the transverse connecting pipes 34 are connected transversely to form a transverse and longitudinal interlaced grid-like flow channel.

[0036] See Figure 3 In the heat exchange assembly of this embodiment, each branch pipe 33 is connected to a plurality of longitudinal connecting pipes 35 at the end away from the transverse connecting pipe 34. The longitudinal connecting pipes 35 are arranged perpendicularly to the transverse connecting pipes 34. Each longitudinal connecting pipe 35 is longitudinally connected to the branch pipe 33 to form a longitudinal flow path. The other end of each branch pipe 33 is connected to a longitudinal connecting pipe 35, which connects each row of longitudinally arranged branch pipes 33. The refrigerant flowing into this area not only acts as a buffer but also allows the refrigerant to continue flowing in the longitudinal direction, enabling the refrigerant to release energy efficiently in the branch pipe 33.

[0037] See Figures 1 to 4 In the heat exchange assembly of this embodiment, the number of transverse flow paths in each tube group 3 is the same. The number of transverse connecting pipes 34 in each tube group 3 is the same, and the branch pipes 33 of each tube group 3 are arranged in parallel to each other to form a cuboid structure for the heat exchange assembly.

[0038] Specifically, in the heat exchange assembly of this embodiment, there are four branch pipes 33 for each longitudinal flow path. The four branch pipes 33 are arranged in parallel along the vertical direction to form a longitudinal flow path. Each longitudinal flow path is also arranged in parallel along the horizontal direction to form a pipe group 3.

[0039] See Figures 1 to 4 In the heat exchange assembly of this embodiment, each inner tube group 32 includes a first inner tube group 321 and a second inner tube group 322. There are four first branch pipes 2 and four second branch pipes 5. There are two inner tube groups 32, which together with the side tube groups 31 on both sides form four tube groups 3. The four tube groups 3 correspond to four first branch pipes 2 and four second branch pipes 5.

[0040] Specifically, the first inlet / outlet 11 and the second inlet / outlet 41 are located slightly to the left of the middle of the first manifold 1 and the second manifold 4, respectively, and each first branch pipe 2 and each second branch pipe 5 are located on one side of each pipe group 3. For example... Figure 4 As shown, the inlet and outlet of each tube group 3 are on the left side of each tube group 3. The refrigerant enters from the inlet and fills the entire tube group 3, and then flows out from the outlet at the other end, ensuring that the refrigerant can fill the tube group 3 and achieve full heat exchange with the heat storage material in the external gap of the branch pipe 33, which greatly improves the heat exchange efficiency between the refrigerant and the external heat storage material.

[0041] Specifically, this embodiment has thirteen longitudinal flow paths, which are divided into four groups of pipes 3: three-way, four-way, four-way, and two-way. The heat exchange effect is poor on the side furthest from the fluid inlet, so only two branch pipes 33 are provided. On the other side, which is relatively closer to the inlet, three branch pipes 33 are provided. The remaining two groups have more uniform heat exchange, so four branch pipes 33 are uniformly provided. This distribution of flow paths ensures that the heat exchange efficiency of each path remains basically consistent, thereby maintaining a highly efficient heat exchange state between the refrigerant and the heat storage material, thus improving the overall system energy efficiency.

[0042] In the heat exchange assembly of this embodiment, the first manifold 1, the second manifold 4, each of the first branch pipes 2, each of the second branch pipes 5, the first flow pipe 6, and the second flow pipe 7 are all circular pipes, while the branch pipe 33 is a flat pipe with a cuboid structure. The first manifold 1, the second manifold 4, each of the first branch pipes 2, each of the second branch pipes 5, the first flow pipe 6, and the second flow pipe 7 are set as circular pipes to facilitate refrigerant flow, while the branch pipe 33 is a flat pipe to increase the heat exchange area.

[0043] See Figure 5 In the heat exchange assembly of this embodiment, fins 8 are provided on the outer surface of multiple tube groups 3, and the fins 8 have a cuboid structure. Providing rectangular fins 8 on the outer surface of the tube groups 3 increases the heat dissipation area and improves the heat transfer efficiency.

[0044] See Figure 5 and Figure 6 In this embodiment, the heat storage device includes a shell 9 and a receiving cavity 91 formed within the shell 9. A heat storage material is disposed within the receiving cavity 91, and a heat exchange assembly as described above is also disposed within the receiving cavity 91. Heat exchange occurs between the heat storage material and the heat exchange assembly. The receiving cavity 91 is formed inside the shell 9 of the heat storage device. The heat exchange assembly has a space of at least 10mm in all directions (top, bottom, left, right, front, and back) to facilitate the flow of the heat storage material into and filling the receiving cavity 91. The heat exchange assembly is positioned as follows... Figure 1 As shown, the notched side of the finned branch pipe 33 faces upward. When the refrigerant flows in from the bottom and out from the top, it ensures that the uppermost heat storage material can also fully contact the branch pipe 33, thereby improving the heat exchange efficiency of the heat exchanger. While reducing the overall number of branch pipes 33, the overall heat exchange efficiency is maximized.

[0045] The air conditioning system in this embodiment includes the heat storage device described above. By using the heat storage device and setting different numbers of longitudinal flow paths, the uniformity of refrigerant distribution inside the heat storage device is effectively improved, and the heat exchange efficiency of the heat storage device is enhanced. This ensures that the refrigerant medium is always in a highly efficient heat release state when flowing in the branch pipe 33, which can greatly improve the heat exchange efficiency between the refrigerant and the external heat storage material, improve the energy efficiency of the heat exchange components, accelerate the defrosting speed of the air conditioning unit, reduce defrosting time, reduce the indoor temperature drop during air conditioning heating, and improve the comfort of the air conditioning unit during heating.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0047] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0048] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0049] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0050] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A heat exchange component, characterized in that, include: The first manifold (1) is provided with a first inlet and outlet (11) for fluid to enter and exit. Multiple first branch pipes (2) are arranged at intervals on the first collector pipe (1); Multiple pipe groups (3), each of the first branch pipes (2) is connected to each of the pipe groups (3) in a one-to-one correspondence; the multiple pipe groups (3) include two side pipe groups (31) and multiple inner pipe groups (32), the two side pipe groups (31) are respectively arranged on both sides of the heat exchange component, and each of the inner pipe groups (32) is arranged between the two side pipe groups (31); each of the pipe groups (3) is composed of several parallel branch pipes (33), the branch pipes (33) are arranged sequentially along a first preset direction to form multiple longitudinal flow paths; wherein, the number of longitudinal flow paths of the two side pipe groups (31) is less than the number of longitudinal flow paths of each inner pipe group (32); The heat exchange assembly also includes: Multiple second diversion pipes (5) are provided, each second diversion pipe (5) is provided in a one-to-one correspondence with each of the pipe groups (3), and each second diversion pipe (5) is connected in a one-to-one correspondence with each of the pipe groups (3); The second manifold (4) is connected to each of the second branch pipes (5), and the second branch pipes (5) are arranged on the second manifold (4) at intervals; the second manifold (4) is provided with a second inlet and outlet (41) for fluid to enter and exit, and the second manifold (4) is arranged opposite to the first manifold (1); The heat exchange assembly also includes: The first flow tube (6) is connected to each of the first branch tubes (2) on one side and to each of the tube groups (3) on the other side. The second flow tube (7) is connected to each of the second branch tubes (5) on one side and to each of the tube groups (3) on the other side. One end of each branch pipe (33) is connected to a plurality of transverse connecting pipes (34). Each transverse connecting pipe (34) is disposed between the first flow pipe (6) and the second flow pipe (7). Each transverse connecting pipe (34) is arranged parallel to each other along a second preset direction to form a transverse flow path. Each transverse connecting pipe (34) is transversely connected to the branch pipe (33). The extension direction of the first preset direction is perpendicular to the extension direction of the second preset direction; Each branch pipe (33) is connected to a plurality of longitudinal connecting pipes (35) at the end away from the transverse connecting pipe (34). The longitudinal connecting pipes (35) are arranged perpendicularly to the transverse connecting pipe (34). Each of the longitudinal connecting pipes (35) is longitudinally connected to the branch pipe (33) to form the longitudinal flow path.

2. The heat exchange assembly according to claim 1, characterized in that, The number of transverse flow paths is the same for each of the tube groups (3).

3. The heat exchange assembly according to claim 2, characterized in that, Each of the inner tube groups (32) includes a first inner tube group (321) and a second inner tube group (322), with four first shunt tubes (2) and four second shunt tubes (5).

4. The heat exchange assembly according to claim 1, characterized in that, The first manifold (1), the second manifold (4), each of the first branch pipes (2), each of the second branch pipes (5), the first flow pipe (6) and the second flow pipe (7) are all round pipes, and the branch pipe (33) is a flat pipe with a cuboid structure.

5. The heat exchange assembly according to claim 4, characterized in that, The outer surface of the multiple tube groups (3) is provided with fins (8), and the fins (8) are cuboid structures.

6. A heat storage device, comprising a housing (9) and a receiving cavity (91) formed within the housing (9), wherein a heat storage material is disposed within the receiving cavity (91), characterized in that, The cavity (91) is further provided with a heat exchange component as described in any one of claims 1-5, through which heat exchange is performed with the heat storage material.

7. An air conditioning system, characterized in that, Includes the heat storage device as described in claim 6.

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