Plate heat exchanger

Abstract

The embodiment of the utility model provides a plate heat exchanger, and relates to the field of heat exchangers. The plate heat exchanger comprises a plurality of partition plates and a plurality of flow guide plates, the multiple flow guide plates and the multiple partition plates are sequentially and alternately stacked, and a first channel, a second channel, a third flow channel, a fourth channel, a fifth flow channel and a sixth channel which are sequentially communicated are formed between the multiple partition plates and the multiple flow guide plates; multiple layers of heat exchange spaces are further formed between the multiple partition plates and the multiple flow guide plates and used for being communicated with a coolant, and due to the fact that the coolant needs to pass through the first channel, the second channel, the third flow channel, the fourth channel, the fifth flow channel and the sixth channel, the coolant can exchange heat with the coolant in all the channels in the multiple layers of heat exchange spaces. The heat exchange path is increased, the heat exchange area is increased, and therefore the heat exchange efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, and more specifically, to a plate heat exchanger. Background Technology

[0002] When plate heat exchangers are used in battery thermal management systems, refrigerant and coolant exchange heat in the plate heat exchanger, and the low-temperature coolant passes through the loop to cool the battery module.

[0003] Traditional plate heat exchangers suffer from poor heat exchange performance and low heat exchange efficiency due to the short heat exchange process between the coolant and refrigerant and the small heat exchange contact area. Utility Model Content

[0004] This invention provides a plate heat exchanger that can form a longer heat exchange path and a larger heat exchange area, thereby improving heat exchange efficiency.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a plate heat exchanger, which includes:

[0007] Multiple partitions; and

[0008] Multiple guide vanes and multiple baffles are arranged alternately in sequence, and at least two channels are formed between the multiple baffles and multiple guide vanes in sequence, which are used to connect the refrigerant.

[0009] Multiple partitions and multiple guide plates form multiple heat exchange spaces, which exchange heat with the refrigerant and are used to connect the coolant.

[0010] Optionally, the channel includes a first channel, a second channel, a third channel, a fourth channel, a fifth channel, and a sixth channel, which are connected sequentially.

[0011] Optionally, the first channel, the second channel, the fourth channel and the sixth channel are arranged in parallel to each other and axially along the height direction of the heat exchanger. The first channel, the second channel, the fourth channel and the sixth channel are all located at one end of the heat exchanger and arranged along the width direction of the heat exchanger.

[0012] Both the third and fifth flow channels are U-shaped, and the plane containing the U-shape is parallel to the partition. The two ends of the U-shape of the third flow channel are connected to the second and fourth channels, respectively, and the two ends of the U-shape of the fifth flow channel are connected to the fourth and sixth channels, respectively. The third and fifth flow channels have the same structure, but the refrigerant flows in opposite directions in the third and fifth flow channels.

[0013] Optionally, the first channel is located between the second and fourth channels;

[0014] The fourth channel is aligned with the sixth channel, and a sealing plate is installed between the fourth channel and the sixth channel to isolate the fourth channel from the sixth channel.

[0015] Optionally, a guide strip is provided on the inner bottom surface of the guide plate. The guide strip is arranged along the length of the heat exchanger. One end of the guide strip near the second channel is connected to the baffle on the side of the guide plate. The other end of the guide strip is spaced apart from the baffle on the corresponding side of the guide plate. The top end face of the guide strip is connected to the outer bottom surface of the partition.

[0016] The inner bottom surface of the baffle is provided with a raised strip, which is arranged along the length of the heat exchanger. The end of the raised strip away from the second channel is connected to the baffle on the side of the baffle, and the other end of the raised strip is spaced apart from the baffle on the corresponding side of the baffle. The top end face of the raised strip is connected to the outer bottom surface of the guide plate.

[0017] The baffles, guide plates, and guide strips together form the third and fifth flow channels, and the baffles, ridges, and guide plates together form a multi-layer heat exchange space.

[0018] Optionally, the raised strips and the guide strips are staggered in the width direction of the heat exchanger.

[0019] Optionally, the heat exchanger is also provided with a seventh channel and an eighth channel, which are spaced apart and axially along the height of the heat exchanger. Both the seventh channel and the eighth channel are connected to the multi-layer heat exchange space.

[0020] Optionally, the seventh and eighth channels are located at the end of the heat exchanger away from the first channel.

[0021] Optionally, the heat exchanger includes a connecting block, the interior of which is provided with a connecting channel, one end of which is connected to a first channel and the other end of which is connected to a second channel.

[0022] Optionally, the connecting channel is U-shaped, with one end of the U-shape opening aligned with and connected to the first channel, and the other end of the U-shape opening aligned with and connected to the second channel.

[0023] The beneficial effects of the plate heat exchanger in this embodiment of the utility model include, for example:

[0024] This plate heat exchanger includes multiple baffles and multiple guide plates, which are arranged alternately in layers. A first channel, a second channel, a third channel, a fourth channel, a fifth channel, and a sixth channel are formed between the baffles and guide plates. These channels are used to connect the refrigerant. Multiple heat exchange spaces are also formed between the baffles and guide plates, which are used to connect the coolant. Because the refrigerant needs to pass through the first, second, third, fourth, fifth, and sixth channels, and can exchange heat with the refrigerant in each channel within these multiple heat exchange spaces, the heat exchange path is increased, the heat exchange area is expanded, and thus the heat exchange efficiency is improved. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of the plate heat exchanger provided in an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram showing the flow direction of the refrigerant in the plate heat exchanger provided in an embodiment of this utility model.

[0028] Figure 3 This is a top view schematic diagram of the plate heat exchanger provided in an embodiment of this utility model;

[0029] Figure 4 for Figure 3 A cross-sectional schematic diagram of AA in the middle;

[0030] Figure 5 for Figure 3 Cross-sectional schematic diagram of BB;

[0031] Figure 6 This is a second top view of the plate heat exchanger provided in an embodiment of the present invention;

[0032] Figure 7 for Figure 6 A cross-sectional view of CC.

[0033] Figure 8 for Figure 6 A cross-sectional schematic diagram of DD;

[0034] Figure 9This is a schematic diagram of the structure of the partition provided in an embodiment of the present utility model;

[0035] Figure 10 A schematic diagram of the structure of the guide plate provided in the embodiments of this utility model;

[0036] Figure 11 A schematic diagram of the connection between the sealing plate and the guide plate provided in the embodiments of this utility model;

[0037] Figure 12 A schematic diagram of the structure of the connecting block provided in the embodiments of this utility model.

[0038] Icons: 1-Baffle; 101-Raised bar; 102-First hole; 103-Second hole; 104-Third hole; 105-Fourth hole; 106-Fifth hole; 2-Guide plate; 201-Guide strip; 202-First docking hole; 203-Second docking hole; 204-Third docking hole; 205-Fourth docking hole; 206-Fifth docking hole; 207-Sealing plate; 301-First channel; 302-Second channel; 303-Third flow channel; 304-Fourth channel; 305-Fifth flow channel; 306-Sixth channel; 307-Seventh channel; 308-Eighth channel; 309-Heat exchange space; 4-Connecting block; 401-Connecting channel; 501-Inlet connector; 502-Outlet connector; 503-First connecting pipe; 504-Second connecting pipe; 6-Top cover plate; 7-Bottom cover plate. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0042] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0044] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0047] An embodiment of this utility model provides a plate heat exchanger that can be applied to a battery thermal management system, which will be described in detail below.

[0048] Please refer to Figures 1 to 8The plate heat exchanger includes multiple baffles 1 and multiple guide plates 2. The multiple guide plates 2 and multiple baffles 1 are arranged alternately in a stacked manner. A first channel 301, a second channel 302, a third flow channel 303, a fourth channel 304, a fifth flow channel 305 and a sixth channel 306 are formed between the multiple baffles 1 and multiple guide plates 2. The first channel 301, the second channel 302, the third flow channel 303, the fourth channel 304, the fifth flow channel 305 and the sixth channel 306 are used to connect the refrigerant. Multiple heat exchange spaces 309 are also formed between the multiple baffles 1 and multiple guide plates 2. The multiple heat exchange spaces 309 are used to connect the coolant.

[0049] Since the refrigerant passes through the first channel 301, the second channel 302, the third flow channel 303, the fourth channel 304, the fifth flow channel 305 and the sixth channel 306 in sequence, and the refrigerant can exchange heat with the refrigerant in each channel and flow channel in the multi-layer heat exchange space 309, the heat exchange path is increased, the heat exchange area is increased and the heat exchange efficiency of the heat exchanger is improved.

[0050] Specifically, the first channel 301 and the second channel 302 are connected by a connecting block 4. The connecting block 4 has a connecting channel 401 inside, one end of which is connected to the first channel 301, and the other end of which is connected to the second channel 302. In this embodiment, as... Figure 12 The connecting channel 401 is U-shaped, with one end of the U-shape aligned with and connected to the first channel 301, and the other end of the U-shape aligned with and connected to the second channel 302. The connecting block 4 is located at the bottom or side of the heat exchanger. In other embodiments, the connecting block 4 may also be a bent pipe.

[0051] refer to Figure 9 The partition 1 has a rectangular outline and is surrounded by baffles. A protruding strip 101 is provided on the partition 1. The protruding strip 101 is arranged along the length of the heat exchanger. One end of the protruding strip 101 away from the second channel 302 is connected to the baffle on the first short side of the partition 1, and the other end of the protruding strip 101 is spaced apart from the baffle on the second short side of the partition 1. The top surface of the protruding strip 101 is higher than the inner bottom surface of the partition 1. The top end face of the protruding strip 101 is connected to the outer bottom surface of the guide plate 2. The partition 1, the guide plate 2 and the protruding strip 101 together form a multi-layer heat exchange space 309.

[0052] The partition 1 has a first hole 102, a second hole 103, a third hole 104, a fourth hole 105, and a fifth hole 106. The fourth hole 105 and the fifth hole 106 are located on the first short side near the partition 1, and are located on both sides of the protrusion 101. The first hole 102, the second hole 103, and the third hole 104 are located on the second short side near the partition 1. The openings of the fourth hole 105 and the fifth hole 106 protrude towards the outer bottom surface of the partition 1, while the openings of the first hole 102, the second hole 103, and the third hole 104 protrude towards the inner bottom surface of the partition 1.

[0053] refer to Figure 10 The guide vane 2 is also rectangular in shape, and baffles are connected around its perimeter. The size and shape of the guide vane 2 match those of the baffle 1. The baffles around the guide vane 2 are connected to the baffles around the baffle 1.

[0054] A guide strip 201 is provided on the guide plate 2. The guide strip 201 is arranged along the length of the heat exchanger. One end of the guide strip 201 near the second channel 302 is connected to the baffle on the second short side of the guide plate 2. The other end of the guide strip 201 is spaced apart from the baffle on the first short side of the guide plate 2. The top end face of the guide strip 201 is connected to the outer bottom surface of the partition plate 1. The partition plate 1, the guide plate 2 and the guide strip 201 together form the third flow channel 303 and the fifth flow channel 305.

[0055] Furthermore, the protruding strip 101 and the guide strip 201 are staggered in the width direction of the heat exchanger.

[0056] The guide plate 2 has a first docking hole 202, a second docking hole 203, and a third docking hole 204. The first docking hole 202 is connected to the first hole 102 on the partition plate 1, the second docking hole 203 is connected to the second hole 103 on the partition plate 1, and the third docking hole 204 is connected to the third hole 104 on the partition plate 1. Multiple first holes 102 and multiple first docking holes 202 are connected to form a first channel 301, multiple second holes 103 and multiple second docking holes 203 are connected to form a second channel 302 and a sixth channel 306, and multiple third holes 104 and multiple third docking holes 204 are connected to form a fourth channel 304. Meanwhile, the opening of the first docking hole 202 protrudes towards the inner bottom surface of the guide plate 2, and the openings of the second docking hole 203 and the third docking hole 204 protrude towards the outer bottom surface of the guide plate 2, thereby forming a sealed connection between the first docking hole 202 and the first hole 102, and separating the first channel 301 from the third flow channel 303 and the fifth flow channel 305.

[0057] The first channel 301, second channel 302, fourth channel 304, and sixth channel 306 are arranged parallel to each other and axially along the height direction of the heat exchanger. Each of these channels is located at one end of the heat exchanger and arranged along its width. The fourth channel 304 is aligned with the sixth channel 306, and a sealing plate 207 is provided between them to isolate them. The third flow channel 303 and the fifth flow channel 305 are both U-shaped, with the plane of the U-shape parallel to the partition plate 1. The two ends of the U-shape of the third flow channel 303 are connected to the second channel 302 and the fourth channel 304, respectively, and the two ends of the U-shape of the fifth flow channel 305 are connected to the fourth channel 304 and the sixth channel 306, respectively. The third flow channel 303 and the fifth flow channel 305 have the same structure, but the refrigerant flows in opposite directions within them.

[0058] refer to Figure 11 A sealing plate 207 is connected to any of the guide plates 2 in the middle of the plate heat exchanger. The sealing plate 207 is sealed to the edge of the second hole 103, or the sealing plate 207 and any of the guide plates 2 are integrally formed during manufacturing. This allows the sealing plate 207 to isolate the fourth channel 304 from the sixth channel 306, so that the refrigerant in the second channel 302 needs to enter the third flow channel 303 first and then the fourth channel 304, and then enter the sixth channel 306 after passing through the fifth flow channel 305. This allows the refrigerant to pass through multiple U-shaped routes, increasing the distance it travels.

[0059] In this embodiment, the first channel 301 is located between the second channel 302 and the fourth channel 304.

[0060] Since the partition plate 1 is also provided with a fourth hole 105 and a fifth hole 106, and the guide plate 2 is also provided with a fourth docking hole 205 and a fifth docking hole 206, the fourth hole 105 and the fourth docking hole 205 are connected, and the fifth hole 106 and the fifth docking hole 206 are connected. Multiple fourth holes 105 and multiple fourth docking holes 205 are connected to form a seventh channel 307, and multiple fifth holes 106 and multiple fifth docking holes 206 are connected to form an eighth channel 308. The seventh channel 307 and the eighth channel 308 are spaced apart and their axial direction is along the height direction of the heat exchanger. The seventh channel 307 and the eighth channel 308 are both connected to the multi-layer heat exchange space 309 to connect and contain the coolant. The seventh channel 307 and the eighth channel 308 are located at the end of the heat exchanger away from the first channel 301.

[0061] Furthermore, the partition 1 is provided with multiple support points, which are protrusions protruding from the bottom surface of the partition 1. The multiple protrusions can be evenly distributed or unevenly distributed. Each protrusion is independent of the others and is connected to the guide plate 2, thereby maintaining the distance between the partition 1 and the guide plate 2.

[0062] Furthermore, in this embodiment, the partition 1 and the guide plate 2 can be formed by stamping or extrusion of sheet metal, resulting in strong integrity and good uniformity.

[0063] Refer again Figure 1 The first channel 301 is connected to the inlet connector 501, and the sixth channel 306 is connected to the outlet connector 502. The inlet connector 501 is used to input refrigerant, and the outlet connector 502 is used to output refrigerant.

[0064] The seventh channel 307 is connected to the first connector 503, and the eighth channel 308 is connected to the second connector 504. The first connector 503 can be used to input or output coolant, and the second connector 504 can be used to output or input coolant.

[0065] The bottom guide plate 2 of the plate heat exchanger is connected to a bottom cover plate 7, and the top guide plate 2 is connected to an upper cover plate 6.

[0066] The plate heat exchanger of this invention achieves high heat exchange efficiency by increasing the heat exchange area and extending the heat exchange path.

[0067] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A plate heat exchanger, characterized in that, include: Multiple partitions (1); as well as Multiple guide plates (2) are arranged alternately with multiple partitions (1) in sequence, and at least two channels are formed between the multiple partitions (1) and the multiple guide plates (2) in sequence, which are used to connect the refrigerant; A multi-layer heat exchange space (309) is also formed between the plurality of partitions (1) and the plurality of guide plates (2). The multi-layer heat exchange space (309) is used to exchange heat with the refrigerant and to connect the coolant.

2. The plate heat exchanger according to claim 1, characterized in that, The channels include a first channel (301), a second channel (302), a third channel (303), a fourth channel (304), a fifth channel (305), and a sixth channel (306), which are connected in sequence.

3. The plate heat exchanger according to claim 2, characterized in that, The first channel (301), the second channel (302), the fourth channel (304) and the sixth channel (306) are arranged in parallel to each other and their axes are along the height direction of the heat exchanger. The first channel (301), the second channel (302), the fourth channel (304) and the sixth channel (306) are all located at one end of the heat exchanger and are arranged along the width direction of the heat exchanger. The third flow channel (303) and the fifth flow channel (305) are both U-shaped, and the plane of the U-shape is parallel to the partition (1). The two ends of the U-shape of the third flow channel (303) are connected to the second channel (302) and the fourth channel (304) respectively. The two ends of the U-shape of the fifth flow channel (305) are connected to the fourth channel (304) and the sixth channel (306) respectively. The third flow channel (303) and the fifth flow channel (305) have the same structure, and the refrigerant flows in opposite directions in the third flow channel (303) and the fifth flow channel (305).

4. The plate heat exchanger according to claim 3, characterized in that, The first channel (301) is located between the second channel (302) and the fourth channel (304); The fourth channel (304) is aligned with the sixth channel (306), and a sealing plate (207) is provided between the fourth channel (304) and the sixth channel (306), the sealing plate (207) isolating the fourth channel (304) and the sixth channel (306).

5. The plate heat exchanger according to claim 2, characterized in that, A guide strip (201) is provided on the inner bottom surface of the guide plate (2). The guide strip (201) is arranged along the length direction of the heat exchanger. One end of the guide strip (201) near the second channel (302) is connected to the baffle on the side of the guide plate (2). The other end of the guide strip (201) is spaced apart from the baffle on the corresponding side of the guide plate (2). The top end face of the guide strip (201) is connected to the outer bottom surface of the partition plate (1). A protruding strip (101) is provided on the inner bottom surface of the partition (1). The protruding strip (101) is arranged along the length direction of the heat exchanger. One end of the protruding strip (101) away from the second channel (302) is connected to the baffle on the side of the partition (1). The other end of the protruding strip (101) is spaced apart from the baffle on the corresponding side of the partition (1). The top end face of the protruding strip (101) is connected to the outer bottom surface of the guide plate (2). The partition (1), the guide plate (2), and the guide strip (201) together form the third flow channel (303) and the fifth flow channel (305), and the partition (1), the protrusion (101), and the guide plate (2) together form the multi-layer heat exchange space (309).

6. The plate heat exchanger according to claim 5, characterized in that, The protruding strip (101) and the guide strip (201) are staggered in the width direction of the heat exchanger.

7. The plate heat exchanger according to claim 2, characterized in that, The heat exchanger is also provided with a seventh channel (307) and an eighth channel (308). The seventh channel (307) and the eighth channel (308) are spaced apart and axially along the height direction of the heat exchanger. Both the seventh channel (307) and the eighth channel (308) are connected to the multi-layer heat exchange space (309).

8. The plate heat exchanger according to claim 7, characterized in that, The seventh channel (307) and the eighth channel (308) are located at the end of the heat exchanger away from the first channel (301).

9. The plate heat exchanger according to any one of claims 2 to 6, characterized in that, The heat exchanger includes a connecting block (4), and the connecting block (4) has a connecting channel (401) inside. One end of the connecting channel (401) is connected to the first channel (301), and the other end of the connecting channel (401) is connected to the second channel (302).

10. The plate heat exchanger according to claim 9, characterized in that, The connecting channel (401) is U-shaped, with one end of the U-shape opening aligned with and connected to the first channel (301), and the other end of the U-shape opening aligned with and connected to the second channel (302).

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