Heat exchanger

Abstract

The utility model provides a heat exchanger which comprises a heat exchange main body with an inner cavity, the heat exchange main body is provided with a first inlet and a first outlet which are used for high-temperature and high-pressure refrigerants to enter and exit, a second inlet and a second outlet which are used for low-temperature and low-pressure refrigerants to enter and exit, and a third inlet and a third outlet which are used for heat supply cooling liquid to enter and exit, and a partition plate is arranged in the inner cavity. The partition plate divides the inner cavity into a first heat exchange area and a second heat exchange area, the first heat exchange area is used for heat exchange between high-temperature and high-pressure refrigerants and low-temperature and low-pressure refrigerants, and the second heat exchange area is used for heat exchange between the low-temperature and low-pressure refrigerants and hot cooling liquid. According to the heat exchanger, mutual integration of the IHX and the evaporator is achieved, the size of an automobile air conditioning system is reduced, miniaturization development of the automobile air conditioning system is facilitated, meanwhile, arrangement of pipelines is avoided, heat loss is reduced, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning systems, and in particular to a heat exchanger. Background Art

[0002] Automobile air conditioning systems usually include a compressor, a condenser, an expansion valve and an evaporator. In order to improve the heat exchange performance of the heat exchange system, an IHX (intermediate heat exchanger) is usually added to the system. The high-temperature and high-pressure liquid refrigerant flowing out of the condenser flows through the IHX into the expansion valve, and the low-temperature and low-pressure gaseous refrigerant flowing out of the evaporator flows through the IHX into the compressor. When the two meet in the IHX, the high-temperature and high-pressure liquid refrigerant is cooled down, and the low-temperature and low-pressure gaseous refrigerant is heated. At present, the IHX and evaporator on the market are produced and used separately, and the two are connected by a pipeline. As a result, the automobile air conditioning system is large in size, which is not conducive to the development of miniaturization of automobile air conditioning systems. In addition, there is a problem of heat loss in the pipeline, which reduces the heat exchange efficiency. Utility Model Content

[0003] The utility model provides a heat exchanger to overcome the above defects of the prior art.

[0004] The utility model provides a heat exchanger, comprising a heat exchange main body with an inner cavity, the heat exchange main body is provided with a first inlet and a first outlet for high-temperature and high-pressure refrigerant to enter and exit, a second inlet and a second outlet for low-temperature and low-pressure refrigerant to enter and exit, and a third inlet and a third outlet for hot cooling liquid to enter and exit, a partition is provided in the inner cavity, and the partition divides the inner cavity into a first heat exchange area and a second heat exchange area, the first heat exchange area is used for heat exchange between high-temperature and high-pressure refrigerant and low-temperature and low-pressure refrigerant, and the second heat exchange area is used for heat exchange between low-temperature and low-pressure refrigerant and hot cooling liquid; a plurality of first flow channels for high-temperature and high-pressure refrigerant to circulate are provided in the first heat exchange area, and the inlet and outlet ends of the first flow channels are respectively connected to the first inlet and the first outlet The second heat exchange zone is provided with a plurality of second a flow channels for the circulation of low-temperature and low-pressure refrigerant, and the first heat exchange zone is provided with a plurality of second b flow channels for the circulation of low-temperature and low-pressure refrigerant, the inlet end of the second a flow channel is connected to the second inlet, the outlet end of the second a flow channel is connected to the inlet end of the second b flow channel, and the outlet end of the second b flow channel is connected to the second outlet; the second heat exchange zone is provided with a plurality of third flow channels for the circulation of hot coolant, and the inlet and outlet ends of the third flow channels are respectively connected to the third inlet and the third outlet; the first flow channel and the second b flow channel in the first heat exchange zone are not connected, isolated and staggered, and the third flow channel and the second a flow channel in the second heat exchange zone are not connected, isolated and staggered.

[0005] Compared with the prior art, the heat exchanger of the present application has the following advantages: by setting a partition in the inner cavity of the heat exchange body, the inner cavity is divided into a first heat exchange zone and a second heat exchange zone, the first heat exchange zone is used for heat exchange between high-temperature and high-pressure refrigerant and low-temperature and low-pressure refrigerant, the first flow channel and the second b flow channel in the first heat exchange zone are not connected, isolated and staggered, the second heat exchange zone is used for heat exchange between low-temperature and low-pressure refrigerant and hot coolant, the third flow channel and the second a flow channel in the second heat exchange zone are not connected, isolated and staggered, so as to realize the mutual integration of IHX and evaporator, reduce the volume of automobile air-conditioning system, and facilitate the miniaturization development of automobile air-conditioning system, while avoiding the setting of pipelines, reducing heat loss and improving heat exchange efficiency.

[0006] In a possible embodiment, the first flow channel and the second b flow channel in the first heat exchange zone are arranged parallel to each other, and the flow direction of the high-temperature and high-pressure refrigerant in the first flow channel is opposite to the flow direction of the low-temperature and low-pressure refrigerant in the second b flow channel; the third flow channel and the second a flow channel in the second heat exchange zone are arranged parallel to each other, and the flow direction of the hot coolant in the third flow channel is opposite to the flow direction of the low-temperature and low-pressure refrigerant in the second a flow channel.

[0007] Compared with the prior art, the above technical solution can further improve the heat exchange efficiency of the refrigerant in the first heat exchange zone and the second heat exchange zone.

[0008] In a possible embodiment, the heat exchange body includes a top plate and a bottom plate, the top plate is located above the partition, and the bottom plate is located below the partition, a plurality of first plates spaced apart from each other up and down are fixedly connected between the top plate and the partition, two adjacent first plates form the first and second b channels, and the first and second b channels are staggered and separated up and down; a plurality of second plates spaced apart from each other up and down are fixedly connected between the bottom plate and the partition, two adjacent second plates form the third and second a channels, and the third and second a channels are staggered and separated up and down.

[0009] Compared with the prior art, the above technical solution can realize heat exchange between the refrigerant in the first heat exchange zone and the second heat exchange zone, and improve the structural compactness of the heat exchanger.

[0010] In a possible implementation manner, the first inlet, the first outlet, the second inlet, and the second outlet are all arranged on the top plate, and the third inlet and the third outlet are both arranged on the bottom plate.

[0011] Compared with the prior art, the above technical solution enables the inlet and outlet of the refrigerant and the inlet and outlet of the coolant to be arranged relative to each other, thus facilitating the use of the heat exchanger.

[0012] In a possible implementation, a channel is provided on the first plate, two ends of the channel are respectively connected to the second inlet and the inlet end of the second a flow channel, and the channel is isolated from the first flow channel and the second b flow channel.

[0013] Compared with the prior art, the above technical solution can achieve communication between the inlet end of the second a flow channel and the second inlet.

[0014] In a possible implementation manner, a fixing installation hole is provided on the bottom plate.

[0015] Compared with the prior art, the above technical solution can facilitate the installation of the heat exchange main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 It is a partial cross-section 1 of the utility model;

[0019] Figure 4 This is a partial cross-section 2 of the utility model;

[0020] Figure 5 It is a schematic diagram of the flow path of high temperature and high pressure refrigerant and hot coolant;

[0021] Figure 6 It is a schematic diagram of the flow path of low-temperature and low-pressure refrigerant;

[0022] Figure 7 is a schematic diagram of the flow path of the low-temperature and low-pressure refrigerant in the second a flow channel;

[0023] Figure 8 is a schematic diagram of the flow path of the hot coolant in the third flow channel;

[0024] Description of reference numerals:

[0025] 1. Heat exchange body; 11. Top plate; 12. Bottom plate; 121. Fixed mounting hole; 13. First plate; 14. Second plate; 2. First inlet; 3. First outlet; 4. Second inlet; 5. Second outlet; 6. Third inlet; 7. Third outlet; 8. Partition; 9. First heat exchange zone; 91. First flow channel; 92. Second b flow channel; 10. Second heat exchange zone; 101. Third flow channel; 102. Second a flow channel; 20. Channel. DETAILED DESCRIPTION

[0026] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0027] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0028] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] See also Figures 1 to 8 The embodiment of the present application discloses a heat exchanger, including a heat exchange body 1, wherein the heat exchange body 1 includes a top plate 11, a bottom plate 12 and a partition 8, wherein the top plate 11 is located above the partition 8, and the bottom plate 12 is located below the partition 8, and a plurality of first plates 13 spaced apart from each other are fixedly welded between the top plate 11 and the partition 8, and a plurality of second plates 14 spaced apart from each other are fixedly welded between the bottom plate 12 and the partition 8; the top plate 11, the first plates 13 and the top surface of the partition 8 form a first heat exchange area 9; the bottom plate 12, the second plates 14 and the bottom surface of the partition 8 form a second heat exchange area 10; the top plate 11 is provided with a first inlet 2 and a first outlet 3 for high-temperature and high-pressure refrigerant to enter and exit, and a second inlet 4 and a second outlet 5 for low-temperature and low-pressure refrigerant to enter and exit; the bottom plate 12 is provided with a third inlet 6 and a third outlet 7 for heating and cooling liquid to enter and exit.

[0031] Specifically, two adjacent first plates 13 form a first flow channel 91 and a second b flow channel 92, the first flow channel 91 and the second b flow channel 92 are arranged in an alternating manner up and down, and the first flow channel 91 and the second b flow channel 92 are arranged in parallel with each other; two adjacent second plates 14 form a third flow channel 101 and a second a flow channel 102, the third flow channel 101 and the second a flow channel 102 are arranged in an alternating manner up and down, and the third flow channel 101 and the second a flow channel 102 are arranged in parallel with each other.

[0032] The first plate 13 is provided with a channel 20 , and both ends of the channel 20 are respectively connected with the second inlet 4 and the inlet end of the second a flow channel 102 . The channel 20 is isolated from the first flow channel 91 and the second b flow channel 92 .

[0033] Continue to see Figure 1 and Figure 2 In this embodiment, a fixing installation hole 121 is provided on the bottom plate 12, thereby facilitating the installation of the heat exchange body 1.

[0034] Continue to see Figure 7 and Figure 8 In this embodiment, the third flow channel 101 and the second a flow channel 102 are both U-shaped structures, and the U-shaped opening direction of the second a flow channel 102 is opposite to the U-shaped opening direction of the third flow channel 101.

[0035] See also Figure 3 and Figure 5 The first inlet 2 is connected to the inlet end of the first flow channel 91, and the first outlet 3 is connected to the outlet end of the first flow channel 91, that is, the flow path of the high-temperature and high-pressure refrigerant is: the first inlet 2, the first flow channel 91, and the first outlet 3.

[0036] See also Figure 2 , Figure 3 and Figure 6 The second inlet 4 is connected to the inlet end of the channel 20, the outlet end of the channel 20 is connected to the inlet end of the second a flow channel 102, the outlet end of the second a flow channel 102 is connected to the inlet end of the second b flow channel 92, and the outlet end of the second b flow channel 92 is connected to the second outlet 5, that is, the flow path of the low-temperature and low-pressure refrigerant is: the second inlet 4, the channel 20, the second a flow channel 102, the second b flow channel 92, and the second outlet 5.

[0037] See also Figure 3 , Figure 4 and Figure 5 The third inlet 6 is connected to the inlet end of the third flow channel 101, and the outlet end of the third flow channel 101 is connected to the third outlet 7, that is, the flow path of the hot coolant is: the third inlet 6, the third flow channel 101, and the third outlet 7.

[0038] The flow direction of the low-temperature and low-pressure refrigerant in the second a flow channel 102 is opposite to the flow direction of the hot coolant in the third flow channel 101; the flow direction of the low-temperature and low-pressure refrigerant in the second b flow channel 92 is opposite to the flow direction of the high-temperature and high-pressure refrigerant in the first flow channel 91.

[0039] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0040] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A heat exchanger, characterized in that: The heat exchanger comprises a heat exchange body (1) having an inner cavity, wherein the heat exchange body (1) is provided with a first inlet (2) and a first outlet (3) for high-temperature and high-pressure refrigerant to enter and exit, a second inlet (4) and a second outlet (5) for low-temperature and low-pressure refrigerant to enter and exit, and a third inlet (6) and a third outlet (7) for hot cooling liquid to enter and exit, wherein a partition (8) is provided in the inner cavity, wherein the partition (8) divides the inner cavity into a first heat exchange area (9) and a second heat exchange area (10), wherein the first heat exchange area (9) is used for heat exchange between high-temperature and high-pressure refrigerant and low-temperature and low-pressure refrigerant, and the second heat exchange area (10) is used for heat exchange between low-temperature and low-pressure refrigerant and hot cooling liquid; The first heat exchange zone (9) is provided with a plurality of first flow channels (91) for circulating high-temperature and high-pressure refrigerant, and the inlet and outlet ends of the first flow channels (91) are respectively connected to the first inlet (2) and the first outlet (3); The second heat exchange zone (10) is provided with a plurality of second a flow channels (102) for circulating low-temperature and low-pressure refrigerant, and the first heat exchange zone (9) is provided with a plurality of second b flow channels (92) for circulating low-temperature and low-pressure refrigerant, the inlet end of the second a flow channel (102) is connected to the second inlet (4), the outlet end of the second a flow channel (102) is connected to the inlet end of the second b flow channel (92), and the outlet end of the second b flow channel (92) is connected to the second outlet (5); The second heat exchange zone (10) is provided with a plurality of third flow channels (101) for circulating the heat-supplying cooling liquid, and the inlet and outlet ends of the third flow channels (101) are respectively connected to the third inlet (6) and the third outlet (7); The first flow channel (91) and the second b flow channel (92) in the first heat exchange zone (9) are not connected, isolated and arranged in an alternating manner, and the third flow channel (101) and the second a flow channel (102) in the second heat exchange zone (10) are not connected, isolated and arranged in an alternating manner.

2. The heat exchanger according to claim 1, characterized in that: The first flow channel (91) and the second b flow channel (92) in the first heat exchange zone (9) are arranged parallel to each other, and the flow direction of the high-temperature and high-pressure refrigerant in the first flow channel (91) is opposite to the flow direction of the low-temperature and low-pressure refrigerant in the second b flow channel (92); the third flow channel (101) and the second a flow channel (102) in the second heat exchange zone (10) are arranged parallel to each other, and the flow direction of the hot coolant in the third flow channel (101) is opposite to the flow direction of the low-temperature and low-pressure refrigerant in the second a flow channel (102).

3. The heat exchanger according to any one of claims 1 or 2, characterized in that: The heat exchange body (1) comprises a top plate (11) and a bottom plate (12), wherein the top plate (11) is located above the partition (8), and the bottom plate (12) is located below the partition (8); a plurality of first plates (13) arranged at intervals in an upper and lower direction are fixedly connected between the top plate (11) and the partition (8); two adjacent first plates (13) form the first flow channel (91) and the second b flow channel (92); the first flow channel (91) and the second b flow channel (92) are arranged in an alternating manner in an upper and lower direction; and a plurality of second plates (14) arranged at intervals in an upper and lower direction are fixedly connected between the bottom plate (12) and the partition (8); two adjacent second plates (14) form the third flow channel (101) and the second a flow channel (102); the third flow channel (101) and the second a flow channel (102) are arranged in an alternating manner in an upper and lower direction.

4. The heat exchanger according to claim 3, characterized in that The first inlet (2), the first outlet (3), the second inlet (4), and the second outlet (5) are all arranged on the top plate (11), and the third inlet (6) and the third outlet (7) are both arranged on the bottom plate (12).

5. The heat exchanger according to claim 4, characterized in that: The first plate (13) is provided with a channel (20), the two ends of the channel (20) are respectively connected to the second inlet (4) and the inlet end of the second a flow channel (102), and the channel (20) is isolated from the first flow channel (91) and the second b flow channel (92).

6. The heat exchanger according to claim 3, characterized in that: The bottom plate (12) is provided with a fixing installation hole (121).

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