Exhaust box, cooling system comprising exhaust box and motor vehicle

Abstract

The invention provides an exhaust box, a cooling system comprising the exhaust box and a motor vehicle comprising the cooling system. The exhaust box comprises a box body, a connecting pipe, a connecting pipe separator and a bypass structure. A degassing space is formed in the box body. The connecting pipe is connected to the box body and located outside the box body. The connecting pipe partition piece is arranged in the connecting pipe and extends in the length direction of the connecting pipe so as to partition an inlet and outlet flow channel and an outlet flow channel in the connecting pipe, and the inlet flow channel and the outlet flow channel are in fluid communication with the degassing space. The bypass structure forms a bypass flow path communicating the inlet flow channel with the outlet flow channel, and the bypass flow path is isolated from the degassing space. Wherein one part of the heat transfer fluid flowing in from the inlet flow channel is guided into the degassing space to be degassed, and the other part of the heat transfer fluid flowing in from the inlet flow channel does not pass through the degassing space but directly flows to the outlet flow channel through the bypass flow path.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to an exhaust box, a cooling system including the exhaust box, and a motor vehicle including the cooling system. Background Art

[0002] Motor vehicles usually have a cooling system for cooling down the heat-generating components in the motor vehicle. The cooling system includes a heat transfer fluid circuit and an exhaust tank (also called an expansion tank or an expansion pot). The exhaust tank is connected to the heat transfer fluid circuit through its inlet and outlet pipes for degassing the heat transfer fluid. Summary of the invention

[0003] According to a first aspect of the present disclosure, the present disclosure provides an exhaust box for a cooling system of a motor vehicle, the exhaust box comprising a box body, a connecting pipe, a connecting pipe partition and a bypass structure. A degassing space is provided in the box body. A connecting pipe, the connecting pipe is connected to the box body and is located outside the box body. The connecting pipe partition is arranged in the connecting pipe and extends along the length direction of the connecting pipe to separate an inlet flow channel and an outlet flow channel in the connecting pipe, wherein the inlet flow channel and the outlet flow channel are in fluid communication with the degassing space. The bypass structure forms a bypass flow path connecting the inlet flow channel with the outlet flow channel, and the bypass flow path is isolated from the degassing space. Part of the heat transfer fluid flowing in from the inlet flow channel is guided into the degassing space to be degassed, and the other part of the heat transfer fluid flowing in from the inlet flow channel does not pass through the degassing space, but flows directly to the outlet flow channel via the bypass flow path.

[0004] According to the exhaust box of the first aspect mentioned above, the bypass structure includes a bypass chamber, a first opening and a second opening, the first opening and the second opening are arranged on the tube wall of the connecting pipe, the first opening connects the inlet flow channel with the bypass chamber fluid, and the second opening connects the outlet flow channel with the bypass chamber fluid.

[0005] According to the exhaust case of the first aspect, the bypass structure includes a shell connected to a side wall of the case body, and the bypass chamber is defined by the shell and the side wall of the case body.

[0006] According to the exhaust case of the first aspect, the bypass structure is provided outside the case body.

[0007] According to the exhaust box of the first aspect, the exhaust box further comprises a flow bypass plate, which is disposed in the degassing space and configured to allow the heat transfer fluid flowing into the degassing space to flow toward the outlet flow channel along a path bypassing the flow bypass plate.

[0008] According to the exhaust box of the first aspect, the bottom of the flow deflector is connected to the bottom wall of the box body, and the top of the flow deflector is not lower than the highest liquid level in the box body.

[0009] According to the exhaust box of the first aspect, the exhaust box further comprises a guide tube and a guide tube partition, wherein the guide tube partition extends along the length direction of the guide tube and separates an inlet guide flow channel and a return guide flow channel in the guide tube, wherein the inlet guide flow channel fluidically connects the degassing space with the inlet flow channel, and the return guide flow channel fluidically connects the degassing space with the outlet flow channel. The bypass plate extends along the length direction of the guide tube and is connected to the guide tube partition.

[0010] According to the exhaust box of the first aspect, gaps are respectively formed between both ends of the flow deflection plate in the length direction and the side walls of the box body.

[0011] According to the exhaust box of the first aspect, the exhaust box further comprises a flow restriction structure provided in the inlet flow guide channel, the flow restriction structure being configured to restrict a flow rate of the heat transfer fluid flowing from the inlet flow guide channel into the degassing space.

[0012] According to the exhaust box of the first aspect, the connecting pipe, the connecting pipe partition, the bypass structure, the flow deflector, the guide pipe, and the guide pipe partition are formed integrally.

[0013] According to a second aspect of the present disclosure, the present disclosure provides a cooling system, comprising the exhaust box according to the above first aspect.

[0014] According to a third aspect of the present disclosure, the present disclosure provides a motor vehicle, comprising a cooling system according to the above second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a motor vehicle according to one embodiment of the present disclosure;

[0016] Figure 2 yes Figure 1 A block diagram of a cooling system for a motor vehicle;

[0017] Figure 3A is a perspective view of an exhaust box according to one embodiment of the present disclosure;

[0018] Figure 3B yes Figure 3A A front view of the exhaust box in FIG.

[0019] Figure 3C yes Figure 3A A top view of the exhaust box in FIG.

[0020] Figure 3D is along Figure 3B The cross-sectional view of line AA in the figure;

[0021] Figure 3E is along Figure 3B The cross-sectional view of line BB in FIG.

[0022] Figure 3F is along Figure 3B The cross-sectional view of line BB in FIG.

[0023] Figure 3G is along Figure 3C Cross-sectional view of line CC in .

[0024] It should be understood that the accompanying drawings are not necessarily drawn to scale. In some cases, details that are not necessary for understanding the present invention or that make other details difficult to perceive may be omitted. Where appropriate, similar or identical reference numerals are used to represent similar or identical parts. DETAILED DESCRIPTION

[0025] Various specific embodiments of the present disclosure will be described below with reference to the accompanying drawings that form a part of this specification. It should be understood that although terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "top", "bottom", etc., are used in the present disclosure to describe various example structural parts and elements of the present disclosure, these terms are used here only for the purpose of convenience of description and are determined based on the example orientations shown in the accompanying drawings. Since the embodiments disclosed in the present disclosure can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations.

[0026] Figure 1 A schematic diagram of a motor vehicle 100 is shown according to one embodiment of the present disclosure. The motor vehicle 100 includes a cooling system 110 for providing cooling for heat generating components of the motor vehicle 100.

[0027] Figure 2 A simplified block diagram of the cooling system 110 is shown. Figure 2 As shown, the cooling system 110 includes a heat transfer fluid circuit 200, an exhaust tank 210 connected in the heat transfer fluid circuit 200, a cooled component 220, a heat exchange device 230, and a pump 240. The cooled component 220 is, for example, a battery, a motor, or other components of the motor vehicle 100.

[0028] The heat transfer fluid (e.g., coolant) in the heat transfer fluid loop 200 circulates between the heat exchange device 230 and the component 220, wherein the heat transfer fluid absorbs the heat emitted by the component 220 when flowing through the cooling channel (not shown) of the cooled component 220, and releases the heat when passing through the heat exchange device 230, thereby cooling the component 220 through the circulation of the heat transfer fluid. The pump 240 is used to provide power to circulate the heat transfer fluid.

[0029] During the operation of the cooling system 110, gas is generated in the heat transfer fluid due to heat and other reasons, and excessive gas may affect the normal operation of the cooling system 110. The exhaust box 210 is connected to the heat transfer fluid loop 200 to degas the heat transfer fluid.

[0030] Figures 3A-3G The specific structure of the exhaust box 210 according to an embodiment of the present disclosure is shown, wherein: Figure 3A is a perspective view of the exhaust box 210, Figure 3B is a front view of the exhaust box 210, Figure 3C is a top view of the exhaust box 210, Figure 3D is along Figure 3B The cross-sectional view of line AA in the figure, Figure 3E and Figure 3F is along Figure 3B The cross-sectional view of line BB in Figure 3G is along Figure 3C Cross-sectional view of line CC in .

[0031] Reference Figures 3A-3G The exhaust box 210 includes a box body 350 , a connecting pipe 310 , a connecting pipe partition 320 , a bypass structure 360 ​​, a flow deflector 370 , a guide pipe 380 and a guide pipe partition 390 .

[0032] The connecting pipe 310 is connected to the box body 350 and is located outside the box body 350. The connecting pipe partition 320, which is generally plate-shaped, is disposed in the connecting pipe 310 and extends along the length direction of the connecting pipe 310. Figure 3G The vertical direction of the orientation shown in FIG. 2 is along the radial direction of the connecting pipe 310, and the opposite sides of the connecting pipe partition 320 in the width direction are respectively connected to the pipe wall of the connecting pipe 310, thereby separating the inlet flow channel 330 and the outlet flow channel 340 in the connecting pipe 310. The heat transfer fluid in the heat transfer fluid circuit 200 flows into the exhaust box 210 from the inlet flow channel 330, and flows out of the exhaust box 210 from the outlet flow channel 340.

[0033] In operation, the exhaust box 210 is designed according to Figure 3A , 3B, 3D and 3G are arranged so that the direction of gravity is substantially along Figure 3A , 3B , 3D and 3G. The box body 350 has a degassing space 351, and the degassing space 351 contains the degassed heat transfer fluid and the gas above the liquid surface of the heat transfer fluid. The box body 350 includes a top wall 354, a bottom wall 353 and a side wall 352. The top wall 354 is opposite to the bottom wall 353, and the side wall 352 connects the top wall 354 and the bottom wall 353. According to Figure 3G In the orientation shown, the top wall 354 is located above the degassing space 351, i.e., on the side close to the gas, and the bottom wall 353 is located below the degassing space 351, i.e., on the side close to the heat transfer fluid. The inlet flow channel 330 and the outlet flow channel 340 are in fluid communication with the degassing space 351 to guide the heat transfer fluid to flow into and out of the degassing space 351, respectively.

[0034] The guide tube 380 is disposed inside the box body 350. The guide tube partition 390 is substantially plate-shaped and extends along the length direction of the guide tube 380. The guide tube partition 390 is Figure 3G The vertical direction of the orientation shown in FIG30 is along the radial direction of the guide tube 380, and the opposite sides of the guide tube partition 390 in the width direction are respectively connected to the tube wall of the guide tube 380, thereby separating the inlet guide flow channel 381 and the return guide flow channel 382 in the guide tube 380. The inlet guide flow channel 381 and the return guide flow channel 382 are in fluid communication with the degassing space 351.

[0035] The guide tube 380 has the same inner diameter as the connecting tube 310 and is coaxially connected to the connecting tube 310. The guide tube partition 390 extends along the length direction of the connecting tube partition 320, and one end of the guide tube partition 390 in the length direction is connected to one end of the connecting tube partition 320 in the length direction, so that the inlet guide channel 381 is fluidly connected to the inlet channel 330, and the return guide channel 382 is fluidly connected to the outlet channel 340, thereby connecting the degassing space 351 to the inlet channel 330 fluid through the inlet guide channel 381, and connecting the degassing space 351 to the outlet channel 340 fluid through the return guide channel 382.

[0036] The lower portion of the guide tube 380 (according to Figure 3G The bottom wall 353 of the box body 350 is connected to the bottom wall 353 of the box body 350, that is, the bottom wall 353 of the box body 350 provides a part of the tube wall of the guide tube 380, so as to promote the gas in the heat transfer fluid to be discharged upward by gravity, and facilitate the degassed heat transfer fluid to be fully discharged from the degassing space 351.

[0037] It is worth noting that although in the illustrated embodiment, the guide tube 380 has the same inner diameter as the connecting tube 310 and is coaxially connected to the connecting tube 310 for ease of design and manufacturing, in other embodiments, the inner diameter and / or direction of the guide tube 380 and the connecting tube 310 may be different.

[0038] Continue to refer to Figures 3A-3G The flow deflector plate 370 is arranged in the degassing space 351, the bottom 371 of the flow deflector plate 370 is connected to the bottom wall 353 of the box body 350, the top 372 of the flow deflector plate 370 is not lower than the highest liquid level in the box body 350 (that is, the designed nominal liquid level), and the flow deflector plate 370 extends along the length direction of the guide tube 380 and is connected to the guide tube partition 390, thereby forcing the heat transfer fluid flowing into the degassing space 351 from the inlet guide channel 381 to flow to the return guide channel 382 along a longer curved path bypassing the flow deflector plate 370, so as to improve the degassing effect of the heat transfer fluid.

[0039] It is worth noting that, although in the illustrated embodiment, the two opposite ends 373, 374 of the flow bypass plate 370 in the length direction have gaps with the side wall 352 of the box body 350, so that the heat transfer fluid flowing from the inlet guide channel 381 into the degassing space 351 along the Figure 3C The two substantially U-shaped paths indicated by the arrows in the figure bypass the two ends 373, 374 of the flow bypass plate 370 and then flow into the return flow guide channel 382, ​​but in other embodiments, only one of the two ends 373, 374 of the flow bypass plate 370 may have a gap with the side wall 352 of the box body 350. In addition, although in the illustrated embodiment, the flow bypass plate 370 is configured as a flat plate extending along the length direction of the guide pipe 380 for ease of manufacturing, in other embodiments, the flow bypass plate 370 may be configured to extend in other directions and / or be configured to have other shapes.

[0040] As can be seen from the above, in order to fully degas the heat transfer fluid in the degassing space 351, the flow path for guiding the degassing of the heat transfer fluid is set to be relatively long. If the entire flow of the heat transfer fluid flowing from the inlet flow channel 330 into the exhaust box 210 passes through the degassing space 351 through the above flow path for degassing, a large pressure drop will be generated in the heat transfer fluid loop. In order to ensure that the circulation pressure of the heat transfer fluid loop meets the requirements, the exhaust box 210 forms a bypass flow path 364 that connects the inlet flow channel 330 with the outlet flow channel 340 by setting a bypass structure 360, and the bypass flow path 364 is isolated from the degassing space 351, so that a part of the heat transfer fluid flowing from the inlet flow channel 330 is guided to the degassing space 351, and flows into the outlet flow channel 340 after being degassed in the degassing space 351, while the other part of the heat transfer fluid flowing from the inlet flow channel 330 does not pass through the degassing space 351, but directly flows to the outlet flow channel 340 via the bypass flow path 364.

[0041] Specifically, the bypass structure 360 ​​includes a shell 365, a bypass chamber 361, a first opening 362, and a second opening 363 located in the shell 365. The bypass structure 360 ​​is disposed outside the box body 350 and connected to the side wall 352 of the box body 350, that is, the bypass structure 360 ​​is disposed at one end of the connecting pipe 310 connected to the box body 350, and the bypass chamber 361 is defined by the shell 365 and the side wall 352 of the box body 350.

[0042] The first opening 362 and the second opening 363 are located in the shell 365 and are arranged on the tube wall of the connecting tube 310, for example, by cutting off a portion of the tube wall of the connecting tube 310 located on the inlet flow channel 330 side to form a first opening 362 passing through the tube wall, and by cutting off a portion of the tube wall of the connecting tube 310 located on the outlet flow channel 340 side to form a second opening 363 passing through the tube wall, thereby connecting the inlet flow channel 330 with the bypass chamber 361 fluid through the first opening 362, and connecting the outlet flow channel 340 with the bypass chamber 361 fluid through the second opening 363.

[0043] Thus, the bypass chamber 361, the first opening 362 and the second opening 363 form a bypass flow path 364 connecting the inlet flow channel 330 with the outlet flow channel 340, and the bypass flow path 364 is isolated from the degassing space 351, so that a part of the heat transfer fluid flowing into the inlet flow channel 330 flows from the first opening 362 to the second opening 363 via the bypass chamber 361, and then flows out along the outlet flow channel 340, that is, this part of the heat transfer fluid does not pass through the degassing space 351 and is not degassed.

[0044] It is worth noting that although in the illustrated embodiment, the bypass structure 360 ​​is arranged outside the box body 350 and connected to the side wall 352 of the box body 350, in other embodiments, the bypass structure 360 ​​may also be arranged in the middle part of the connecting pipe 310, or arranged inside the box body 350, as long as the bypass structure 360 ​​forms a bypass flow path 364 connecting the inlet flow channel 330 and the outlet flow channel 340, and the bypass flow path 364 is isolated from the degassing space 351.

[0045] Continue to refer to Figures 3A-3G A limited flow structure 383 is provided in the inlet guide channel 381 to limit the flow rate of the heat transfer fluid flowing into the degassing space 351, ensuring that sufficient heat transfer fluid bypasses the degassing space 351 from the bypass flow path 364, thereby ensuring that the circulation pressure of the heat transfer fluid loop meets the requirements.

[0046] Specifically, the flow-limiting structure 383 is a stopper and is arranged at one end of the inlet flow guide channel 381 away from the connecting pipe 310. The flow-limiting structure 383 blocks a part of the cross section of the inlet flow guide channel 381. Therefore, by designing the size of the flow-limiting structure 383, the flow rate of the heat transfer fluid flowing into the degassing space 351 can be conveniently and accurately controlled. The structure is simple and easy to design and manufacture. Optionally, the flow-limiting structure 383 is configured so that 10% to 40% of the total flow rate of the heat transfer fluid flowing in from the inlet flow channel 330 enters the degassing space 351 for degassing, and the remaining flow rate bypasses the degassing space 351 via the bypass flow path 364.

[0047] The box body 350 is a split structure, including an upper box body 356 and a lower box body 357, and the upper box body 356 and the lower box body 357 respectively define the upper half and the lower half of the degassing space 351 (according to Figure 3G The connecting pipe 310, the connecting pipe partition 320, the bypass structure 360, the bypass plate 370, the guide pipe 380, the flow limiting structure 383, the guide pipe partition 390, and the shell 365 of the bypass structure 360 ​​are formed integrally with the lower box body 357, for example, by molding or injection molding, so as to facilitate manufacturing and assembly, and to ensure the sealing of the connection parts to avoid fluid leakage.

[0048] According to the embodiment of the present disclosure, the exhaust box can be connected to the heat transfer fluid circuit by separating the inlet and outlet flow channels in the connecting pipe, and only one connecting pipe is needed. Compared with the conventional solution of connecting the exhaust box to the heat transfer fluid circuit through two sections of the inlet and outlet pipes, it can save space, reduce the number of parts (such as pipes, pipe joints, pipe clamps, etc.), facilitate manufacturing and installation, and reduce costs. In addition, the bypass structure according to the embodiment of the present disclosure utilizes the case of the exhaust box to participate in forming the bypass chamber, which not only simplifies the structure and saves space, but also makes the integrity of the entire exhaust box stronger, because the shell of the bypass structure can be integrated with the case of the exhaust box, and it looks like the case just protrudes outward a little. In this way, not only can the exhaust box of the present disclosure as a whole meet the requirements of simple shape, but also it is easier to manufacture (for example, by integral molding).

[0049] Although the present disclosure has been described in conjunction with the examples of the embodiments summarized above, various alternatives, modifications, changes, improvements and / or substantially equivalent solutions, whether known or currently or foreseeable in the near future, may be apparent to those of ordinary skill in the art. In addition, the technical effects and / or technical problems described in this specification are exemplary rather than restrictive; so the disclosure in this specification may be used to solve other technical problems and have other technical effects and / or may solve other technical problems. Therefore, the examples of the embodiments of the present disclosure as stated above are intended to be illustrative rather than restrictive. Various changes may be made without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to include all known or earlier developed alternatives, modifications, changes, improvements and / or substantially equivalent solutions.

Claims

1. An exhaust box (210) for a cooling system of a motor vehicle, the exhaust box (210) comprising: A box (350), wherein the box (350) has a degassing space (351); A connecting pipe (310), the connecting pipe (310) being connected to the box (350) and being located outside the box (350); a connecting pipe partition (320), the connecting pipe partition (320) being arranged in the connecting pipe (310) and extending along the length direction of the connecting pipe (310) so as to separate an inlet flow channel (330) and an outlet flow channel (340) in the connecting pipe (310), wherein the inlet flow channel (330) and the outlet flow channel (340) are in fluid communication with the degassing space (351); and a bypass structure (360), wherein the bypass structure (360) forms a bypass flow path (364) connecting the inlet flow path (330) and the outlet flow path (340), and the bypass flow path (364) is isolated from the degassing space (351); Part of the heat transfer fluid flowing in from the inlet flow channel (330) is guided into the degassing space (351) to be degassed, and the other part of the heat transfer fluid flowing in from the inlet flow channel (330) does not pass through the degassing space (351), but flows directly to the outlet flow channel (340) via the bypass flow path (364).

2. The exhaust box (210) according to claim 1, characterized in that: The bypass structure (360) includes a bypass chamber (361), a first opening (362) and a second opening (363), wherein the first opening (362) and the second opening (363) are arranged on the tube wall of the connecting tube (310), wherein the first opening (362) connects the inlet flow channel (330) with the bypass chamber (361) fluidically, and the second opening (363) connects the outlet flow channel (340) with the bypass chamber (361) fluidically.

3. The exhaust box (210) according to claim 2, characterized in that: The bypass structure (360) includes a shell (365) connected to the side wall (352) of the box body (350), and the bypass chamber (361) is defined by the shell (365) and the side wall (352) of the box body (350).

4. The exhaust box (210) according to claim 1, characterized in that: The bypass structure (360) is arranged outside the box (350).

5. The exhaust box (210) according to any one of claims 1 to 4, characterized in that: The exhaust box (210) further comprises a flow bypass plate (370), wherein the flow bypass plate (370) is disposed in the degassing space (351) and is configured such that the heat transfer fluid flowing into the degassing space (351) flows toward the outlet flow channel (340) along a path bypassing the flow bypass plate (370).

6. The exhaust box (210) according to claim 5, characterized in that: The bottom (371) of the flow bypass plate (370) is connected to the bottom wall (353) of the box (350), and the top (372) of the flow bypass plate (370) is not lower than the highest liquid level in the box (350).

7. The exhaust box (210) according to claim 5, characterized in that: The exhaust box (210) further comprises a guide pipe (380) and a guide pipe partition (390), wherein the guide pipe partition (390) extends along the length direction of the guide pipe (380) and separates an inlet guide flow channel (381) and a return guide flow channel (382) in the guide pipe (380), wherein the inlet guide flow channel (381) fluidically connects the degassing space (351) with the inlet flow channel (330), and the return guide flow channel (382) fluidically connects the degassing space (351) with the outlet flow channel (340); Wherein, the flow bypass plate (370) extends along the length direction of the guide pipe (380) and is connected to the guide pipe partition (390).

8. The exhaust box (210) according to claim 7, characterized in that: There are gaps between the two ends (373, 374) of the flow bypass plate (370) in the length direction and the side walls (352) of the box body (350).

9. The exhaust box (210) according to claim 7, characterized in that: The exhaust box (210) further comprises a flow limiting structure (383) disposed in the inlet flow guiding channel (381), wherein the flow limiting structure (383) is configured to limit the flow rate of the heat transfer fluid flowing from the inlet flow guiding channel (381) into the degassing space (351).

10. The exhaust box (210) according to claim 7, characterized in that: The connecting pipe (310), the connecting pipe partition (320), the bypass structure (360), the flow bypass plate (370), the guide pipe (380) and the guide pipe partition (390) are integrally formed.

11. A cooling system (110), comprising the exhaust box (210) according to any one of claims 1 to 10.

12. A motor vehicle (100) comprising a cooling system (110) as claimed in claim 11.

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