A dual-fluid heat exchanger for new energy vehicles

Abstract

The invention discloses a dual-fluid heat exchanger for new energy vehicles, belonging to the field of heat exchangers. The heat exchanger comprises a heat exchange body and a shell detachably connected thereto. The heat exchange body comprises a coolant inlet and outlet, a support plate, a cooling plate and a cover plate. One end of the cover plate is fixedly connected to the coolant inlet and outlet, and the cooling plate is snap-connected to the support plate and fixedly connected to the other end of the cover plate. The end of the shell away from the heat exchange body is fixedly connected with a refrigerant inlet and a refrigerant outlet connected to the inner space of the shell. The support plate comprises a supporting shell, and a reflux space is provided inside the supporting shell. The cooling plate has an inner space connected to the coolant inlet and outlet and an inner space connected to the refrigerant inlet and the reflux space near the cover plate, and the two inner spaces are not interconnected. The end of the shell near the refrigerant outlet is fixedly connected with a refrigerant outflow structure, and the refrigerant outlet is connected to the reflux space away from the cover plate through the refrigerant outflow structure. The device has high heat exchange efficiency and small size.

Description

Technical Field

[0001] The present invention relates to the field of heat exchangers, and more specifically, to a dual-fluid heat exchanger for new energy vehicles. Background Art

[0002] With the rapid development of new energy vehicles, the demand for efficient heat exchange management solutions has also increased. As a key component, the dual-fluid heat exchanger maintains the optimal operating temperature of the automotive system by promoting effective heat transfer between two fluids. However, the existing dual-fluid heat exchanger design has some limitations that affect its performance and efficiency.

[0003] At present, dual-fluid heat exchangers on the market usually adopt plate or shell and tube designs. Among them, the plates of the plate heat exchanger need to be sealed to prevent fluid mixing. Under high temperature and high pressure conditions, the plates may deform and affect the performance of the heat exchanger; in addition, when the fluid contains impurities or particulate matter, these impurities are easy to accumulate in the narrow channels between the plates, causing the circulation pipeline to be blocked, resulting in a decrease in the efficiency of the heat exchanger and even causing equipment failure. Shell and tube heat exchangers are composed of many staggered tubes. In order to achieve effective heat exchange, this device requires a large number of tubes, and each tube needs to be staggered to increase the contact area between the tube and the liquid to be cooled, thereby improving the heat exchange efficiency. However, this design makes the installation process of the device complicated and cumbersome. In addition, once a blockage occurs, maintenance work will become more difficult.

[0004] In order to solve the above problems, it is necessary to provide a new dual-fluid heat exchanger, which not only has high heat transfer efficiency but also is easy to install and maintain. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a dual-fluid heat exchanger for new energy vehicles, whose heat exchange components are easy to install and have high heat exchange efficiency.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A dual-fluid heat exchanger for new energy vehicles, comprising a heat exchange body and a shell detachably connected thereto, the heat exchange body comprising a coolant inlet and outlet, a support plate, a cooling plate and a cover plate, one end of the cover plate being fixedly connected to the coolant inlet and outlet, the cooling plate being snap-connected to the support plate and fixedly connected to the other end of the cover plate; one end of the shell away from the heat exchange body is fixedly connected with a refrigerant inlet and a refrigerant outlet communicating with the inner space of the shell;

[0008] The support plate includes a support shell, a reflux space is opened inside the support shell, the cooling plate is a U-shaped connected hollow structure, the cooling plate has an internal space connected to the coolant inlet and outlet, and an internal space connected to the refrigerant inlet and the reflux space near the cover plate, and the two internal spaces are not interconnected;

[0009] A refrigerant outflow structure is fixedly connected to one end of the shell close to the refrigerant outlet, and the refrigerant outlet is communicated with a side of the reflux space away from the cover plate through the refrigerant outflow structure.

[0010] Preferably, a flow space is opened in the cover plate, and the coolant inlet and outlet include a coolant inlet and a coolant outlet, and the coolant inlet, the coolant outlet and the interior of the cooling plate are connected through the flow space.

[0011] Preferably, the cooling plate includes a first cooling plate and a second cooling plate, the first cooling plate and the second cooling plate are both wave structures, and the shapes of the lower ends match, and a cooling channel for the flow of refrigerant is formed between the first cooling plate and the second cooling plate.

[0012] Preferably, the first cooling plate and the second cooling plate both include a cooling plate shell, a cooling flow space is opened in the cooling plate shell, and the cooling flow space is opened with a connecting port on a side of the cooling plate shell close to the cover plate, and is connected with the flow space through the connecting port.

[0013] Preferably, a mounting hole matching the shape of the cooling plate for fixing the cooling plate is formed at one end of the cover plate away from the coolant inlet and outlet.

[0014] Preferably, the refrigerant outflow structure includes a partition and a fixed pile, an outflow space is opened between the partition and the refrigerant outlet, the partition is fixedly connected to a fixed pile matching the shape of the support plate on one side facing the outflow space, and the fixed pile is a hollow structure. After installation, the outflow space is connected to the return space.

[0015] Preferably, the fixed piles are distributed in a cross shape at the midline position of the partition, and the refrigerant outflow structure also includes a sliding plate, which is located in the outflow space and is slidably connected to the fixed piles; when not in use, the sliding plate completely covers the end of the fixed pile, and the lower end and outer side of the sliding plate are elastically connected to the partition.

[0016] Preferably, the refrigerant outflow structure further comprises an elastic rope, one end of which is fixedly connected to the lower end and the outer side of the sliding plate, and the other end of which is fixedly connected to one side of the bottom outflow space facing the partition.

[0017] Preferably, the sliding plate comprises a cross beam and a limit block, and two sides of the cross beam are rotatably connected to the limit blocks respectively.

[0018] Preferably, a plurality of liquid inlet holes and a plurality of liquid outlet holes are respectively provided on the side surfaces at both ends of the support plate, and both the liquid inlet holes and the liquid outlet holes are connected to the reflux space. A groove for positioning the cooling plate is provided at one end of the support plate away from the cover plate, and positioning plates protrude on both sides of the surface where the liquid outlet holes are located, and a space for the flow of refrigerant is reserved between the positioning plates and the grooves.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. When the dual-fluid heat exchanger of this solution performs heat exchange, the refrigerant can perform secondary heat exchange in the support plate, which significantly improves the efficiency of heat exchange. In addition, the refrigerant inlet and the refrigerant outlet can be located on the same plane, reducing the space occupied by the two sides, reducing the size of the dual-fluid heat exchanger, and reducing its weight and volume.

[0021] Second, the heat exchange body of this solution can ignore the influence of the installation direction on the heat exchange efficiency, so that the horizontal or vertical installation of the support plate will not affect the normal use of the heat exchanger, making the installation of the heat exchanger simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the heat exchange body of the present invention after being disassembled;

[0024] Figure 3 It is a partial cross-sectional structural schematic diagram of the present invention;

[0025] Figure 4 is a cross-sectional view of a heat exchange body of the present invention;

[0026] Figure 5 It is a schematic diagram of the cooling plate structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the support plate structure of the present invention;

[0028] Figure 7 A partial structural cross-sectional view of the housing of the present invention;

[0029] Figure 8 This is a three-dimensional schematic diagram of the partial structure after the present invention is installed;

[0030] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure of part B;

[0031] Fig.10 A cross-sectional view showing the changes of the refrigerant outflow structure before and after installation of the present invention;

[0032] Fig.11 It is a schematic diagram of the refrigerant flow when the present invention is in use.

[0033] Description of the numbers in the figure:

[0034] 1 heat exchange body, 11 cooling liquid inlet and outlet, 111 cooling liquid inlet, 112 cooling liquid outlet, 12 support plate, 121 support shell, 122 reflux space, 123 liquid inlet hole, 124 liquid outlet hole, 125 positioning plate, 13 cooling plate, 131 cooling plate shell, 132 cooling flow space, 133 first cooling plate, 134 second cooling plate, 14 cover plate, 141 flow space, 142 mounting hole, 2 shell, 21 refrigerant inlet, 22 refrigerant outlet, 23 refrigerant outflow structure, 231 partition, 232 fixed pile, 233 sliding plate, 2331 beam, 2332 limit block, 234 outflow space, 235 elastic rope. DETAILED DESCRIPTION

[0035] Embodiment 1:

[0036] See also Figure 1-Figure 11 A dual-fluid heat exchanger for automobiles includes a heat exchange body 1 and a shell 2, and the heat exchange body 1 is detachably connected to the shell 2. The heat exchange body 1 includes a coolant inlet and outlet 11, a support plate 12, a cooling plate 13 and a cover plate 14, one end of the cover plate 14 is fixedly connected to the coolant inlet and outlet 11; the coolant inlet and outlet 11 includes a coolant inlet 111 and a coolant outlet 112, the support plate 12 is snap-connected with the cooling plate 13, and a mounting hole 142 matching the shape of the support plate 12 and the cooling plate 13 is provided on the side of the cover plate 14 away from the coolant inlet and outlet 11, so that the end of the cover plate 14 away from the coolant inlet and outlet 11 is fixedly connected to the support plate 12 and the cooling plate 13.

[0037] like Figure 3-Figure 5As shown, a flow space 141 is provided in the cover plate 14, and the cooling plate 13 is U-shaped, and is composed of a plurality of first cooling plates 133 and second cooling plates 134, and the first cooling plates 133 and second cooling plates 134 are both wavy, and the upper end of the second cooling plate 134 matches the shape of the lower end of the first cooling plate 133, and a cooling channel for the flow of refrigerant is formed between the first cooling plate 133 and the second cooling plate 134. The first cooling plate 133 and the second cooling plate 134 both include a cooling plate shell 131 and a cooling flow space 132 provided inside the cooling plate shell 131, and the cooling flow space 132 and the coolant inlet and outlet 11 are connected through the flow space 141, and the cooling flow space 132 is U-shaped and is connected to each other on the side away from the cover plate 14. The cooling flow space 132 is the internal space in the cooling plate 13 that is connected to the coolant inlet and outlet 11. After the support plate 12 is fixedly connected to the cover plate 14, the support plate 12 penetrates into the flow space 141 and is fixed between the coolant inlet 111 and the coolant outlet 112, thereby dividing the flow space 141 into two spaces, allowing the coolant to enter from the coolant inlet 111, flow through the cooling plate 13 and flow out from the coolant outlet 112, preventing the coolant from only flowing through the cover plate 14 and then flowing out from the coolant outlet 112.

[0038] like Figure 3 and Figure 6 As shown, the support plate 12 includes a support shell 121, and a reflux space 122 is provided inside the support shell 121. A plurality of liquid inlet holes 123 are provided on both sides of one end of the support plate 12 close to the cover plate 14, and the liquid inlet holes 123 are located in a cooling channel for the flow of refrigerant. A groove for positioning the cooling plate 13 is provided at one end of the support plate 12 away from the cover plate 14, and a plurality of liquid outlet holes 124 are provided on both sides of one end of the support plate 12 away from the cover plate 14. Positioning plates 125 protrude on both sides of the surface where the liquid outlet holes 124 are located. Space for the flow of refrigerant is reserved between the positioning plate 125 and the groove. Both sides of the support plate 12 are recessed in the direction of the reflux space 122 to form a second groove for positioning the cooling plate 13, so that the cooling plate 13 is more stable and fits on both sides of the support plate 12.

[0039] like Figure 3 and Figure 7 As shown, one end of the shell 2 away from the heat exchange body 1 is fixedly connected with a refrigerant inlet 21 and a refrigerant outlet 22, the refrigerant inlet 21 is connected with the space inside the shell 2, a refrigerant outflow structure 23 is provided in the shell 2, and the refrigerant outlet 22 is connected with the reflux space 122 through the refrigerant outflow structure 23 and the liquid outlet 124.

[0040] The cooling channel for the flow of refrigerant is connected to the reflux space 122 through the liquid inlet 123. The cooling channel for the flow of refrigerant is the internal space in the cooling plate 13 that connects the refrigerant inlet 21 and the reflux space 122 and is close to the cover plate 14; and this space is not interconnected with the cooling flow space 132.

[0041] like Figure 7-Figure 9 As shown, the refrigerant outflow structure 23 includes a partition 231, and an outflow space 234 is opened between the partition 231 and the refrigerant outlet 22, and the refrigerant outlet 22 is connected to the outflow space 234. The partition 231 and the support plate 12 are provided with a plurality of fixed piles 232 in a cross-shaped fixed connection at the corresponding position of the end where the liquid outlet hole 124 is located, and the shape of the fixed pile 232 matches the shape of the end where the liquid outlet hole 124 is located on the support plate 12. The interior of the fixed pile 232 is provided with an installation slot, so that the outflow space 234 is connected to the shell 2. A sliding plate 233 is slidably connected to one end of any fixed pile 232 facing the outflow space 234.

[0042] like Figure 8 and Fig. 9 As shown, the sliding plate 233 includes a crossbeam 2331, and the two sides of the crossbeam 2331 are respectively connected to the limit block 2332 by hinge rotation. Both sides of the fixed pile 232 are provided with sliding grooves matching the shape of the limit block 2332, for the limit block 2332 to slide in the sliding groove, and the inner wall of the sliding groove of the fixed pile 232 extends inward with a positioning column, and the two end surfaces of the limit block 2332 are provided with positioning grooves matching the shape of the positioning column for the positioning column to slide in, so as to limit the position of the limit block 2332 in the sliding groove, so that the limit block 2332 is not easy to deviate during use.

[0043] An elastic cord 235 is fixedly connected between any partition 231 and the limit block 2332. One end of the elastic cord 235 is fixedly connected to the side of the partition 231 facing the outflow space 234, and the other end is fixedly connected to the side of the limit block 2332 facing the partition 231. A groove for placing the elastic cord 235 is provided at the bottom end of the limit block 2332 toward the crossbeam 2331 to reduce the wear of the elastic cord 235 during movement.

[0044] When not in use, the elastic rope 235 can pull the sliding plate 233 and drive the crossbeam 2331 to completely cover the outlet of the fixing pile 232 , thereby blocking the communication between the space inside the housing 2 and the outflow space 234 .

[0045] like Figure 10-11As shown, during installation, the heat exchange body 1 can be placed horizontally (or vertically) into the shell 2, and the end of the support plate 12 away from the coolant inlet and outlet 11 matches the fixed pile 232 arranged horizontally (or vertically) on the partition 231. The end of the support plate 12 away from the coolant inlet and outlet 11 presses the sliding plate 233 to move toward the outflow space 234 until the positioning plate 125 presses on the partition 231 to block the connection between the installation slot in the fixed pile 232 and the inside of the shell 2; at this time, the liquid outlet 124 of the support plate 12 is connected with the outflow space 234, and the liquid after cooling can flow directly from the inside of the support plate 12 into the outflow space 234. At this time, the installation space of the fixed pile 232 at the non-support plate 12 installation position and the outflow space 234 are still blocked by the sliding plate 233, so that the refrigerant that has not been cooled cannot directly enter the outflow space 234 from the fixed pile 232, affecting the exchange efficiency of the heat exchanger. After installation, both sides of the cooling plate 13 are completely in contact with the inner wall of the housing 2 , and a space for the coolant to flow in is reserved between the cooling plate 13 and the partition plate 231 .

[0046] like Fig.11 As shown, during cooling, the refrigerant is cooled between the cooling plates 13 and then enters the support plate 12 from the liquid inlet hole 123, and is cooled twice in the reflux space 122 of the support plate 12, and then flows directly from the liquid outlet hole 124 through the outflow space 234, and flows out from the refrigerant outlet 22. The coolant enters one side of the flow space 141 from the coolant inlet 111, and returns to the other side of the flow space 141 through the U-shaped track in the cooling flow space 132, and finally is discharged from the coolant outlet 112 to realize the cycle.

Claims

1. A dual-fluid heat exchanger for new energy vehicles, characterized in that: The heat exchanger comprises a heat exchange body (1) and a shell (2) detachably connected thereto, wherein the heat exchange body (1) comprises a coolant inlet and outlet (11), a support plate (12), a cooling plate (13) and a cover plate (14), one end of the cover plate (14) being fixedly connected to the coolant inlet and outlet (11), the cooling plate (13) being snap-connected to the support plate (12) and fixedly connected to the other end of the cover plate (14); an end of the shell (2) away from the heat exchange body (1) is fixedly connected to a refrigerant inlet (21) and a refrigerant outlet (22) which are in communication with the internal space of the shell (2); The support plate (12) comprises a support shell (121), a reflux space (122) is provided inside the support shell (121), the cooling plate (13) is a U-shaped connected hollow structure, the support plate (12) is located in the middle of the U-shaped groove of the cooling plate (13), the cooling plate (13) has an internal space connected to the cooling liquid inlet and outlet (11) and an internal space connected to the refrigerant inlet (21) and the reflux space (122) on the side close to the cover plate (14), and the two internal spaces are not interconnected; a plurality of liquid inlet holes (123) are provided at one end of the support plate (12) close to the cover plate (14), the liquid inlet holes (123) are connected to the reflux space (122) and the internal space of the cooling plate (13) connected to the refrigerant inlet (21) and the reflux space (122) on the side close to the cover plate (14); a plurality of liquid outlet holes (124) are provided at one end of the support plate (12) away from the cover plate (14); A refrigerant outflow structure (23) is fixedly connected to one end of the shell (2) close to the refrigerant outlet (22); the refrigerant outlet (22) is connected to the reflux space (122) via a liquid outlet hole (124) and the refrigerant outflow structure (23).

2. A dual-fluid heat exchanger for new energy vehicles according to claim 1, characterized in that: A flow space (141) is provided in the cover plate (14); the coolant inlet and outlet (11) include a coolant inlet (111) and a coolant outlet (112); and the coolant inlet (111), the coolant outlet (112) and the interior of the cooling plate (13) are connected via the flow space (141).

3. A dual-fluid heat exchanger for new energy vehicles according to claim 2, characterized in that: The cooling plate (13) comprises a first cooling plate (133) and a second cooling plate (134); the first cooling plate (133) and the second cooling plate (134) are both wave structures, and the shapes of the lower ends thereof match; the first cooling plate (133) and the second cooling plate (134) together form a cooling channel for the flow of refrigerant.

4. A dual-fluid heat exchanger for new energy vehicles according to claim 3, characterized in that: The first cooling plate (133) and the second cooling plate (134) both include a cooling plate shell (131), a cooling flow space (132) is provided in the cooling plate shell (131), and the cooling flow space (132) is provided with a connecting port on a side of the cooling plate shell (131) close to the cover plate (14), and is connected to the flow space (141) through the connecting port.

5. The dual-fluid heat exchanger for new energy vehicles according to claim 1, characterized in that: An end of the cover plate (14) away from the coolant inlet and outlet (11) is provided with a mounting hole (142) matching the shape of the cooling plate (13) for fixing the cooling plate (13).

6. The dual-fluid heat exchanger for new energy vehicles according to claim 1, characterized in that: The refrigerant outflow structure (23) comprises a partition (231) and a fixed pile (232); an outflow space (234) is provided between the partition (231) and the refrigerant outlet (22); a fixed pile (232) having a shape matching that of the support plate (12) is fixedly connected to the side of the partition (231) facing the outflow space (234); and the fixed pile (232) is a hollow structure; after installation, the outflow space (234) is connected to the return space (122).

7. A dual-fluid heat exchanger for new energy vehicles according to claim 6, characterized in that: The fixed piles (232) are distributed in a cross shape at the midline position of the partition (231), and the refrigerant outflow structure (23) further includes a sliding plate (233), the sliding plate (233) is located in the outflow space (234) and is slidably connected to the fixed piles (232); when not in use, the sliding plate (233) completely covers the end of the fixed pile (232), and the lower end and outer side of the sliding plate (233) are elastically connected to the partition (231).

8. A dual-fluid heat exchanger for new energy vehicles according to claim 7, characterized in that: The refrigerant outflow structure (23) further comprises an elastic rope (235), one end of which is fixedly connected to the lower end and the outer side of the sliding plate (233), and the other end of which is fixedly connected to one side of the bottom outflow space (234) facing the partition plate (231).

9. The dual-fluid heat exchanger for new energy vehicles according to claim 7, characterized in that: The sliding plate (233) comprises a crossbeam (2331) and a limit block (2332), and two sides of the crossbeam (2331) are rotatably connected to the limit block (2332) respectively.

10. The dual-fluid heat exchanger for new energy vehicles according to claim 1, characterized in that: A groove for positioning the cooling plate (13) is provided at one end of the support plate (12) away from the cover plate (14), and positioning plates (125) protrude on both sides of the surface where the liquid outlet hole (124) is located, and a space for the flow of refrigerant is reserved between the positioning plates (125) and the groove.

Images