Breathing valve, driving system assembly and vehicle

Abstract

The utility model provides a breather valve, a driving system assembly and a vehicle, and relates to the technical field of valve bodies, the breather valve comprises a valve body and a valve plate assembly; a valve cavity structure and a backflow runner structure are arranged in the valve body. The valve cavity structure is provided with a valve cavity inlet and a valve cavity outlet; the valve plate assembly is arranged in the valve cavity structure, so that a non-linear flow channel structure is formed in a partial area of the valve cavity structure; the two ends of the nonlinear flow channel structure communicate with the valve cavity inlet and the valve cavity outlet correspondingly. The first end of the backflow runner structure communicates with the nonlinear runner structure, and the second end of the backflow runner structure communicates with the portion, between the nonlinear runner structure and the valve cavity inlet, of the valve cavity structure. The breather valve can relieve the situation that a large amount of oil gas overflows in the ventilation process of the breather valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, and in particular to a breathing valve, a power system assembly and a vehicle. Background Art

[0002] At present, when the drive system assembly of a vehicle such as a fuel vehicle or a hybrid vehicle is running, some of its components, such as a fuel engine, will generate a large amount of heat, causing the air pressure to be different from the outside world. Therefore, it is necessary to add a ventilation structure such as a breathing valve to balance the air pressure.

[0003] In the prior art, most breathing valves usually add transition structures such as extension tubes to prevent oil and gas from overflowing. However, the inventors realized that in actual use, the extension tube is an external part and is mostly a straight tube. After adding the extension tube to the breathing valve, it only adds a linear flow channel structure, which has a poor oil blocking effect and still causes a large amount of oil and gas to overflow and cause oil pollution. Utility Model Content

[0004] The problem solved by the utility model is how to alleviate the situation that a large amount of oil and gas will overflow from the breathing valve during the ventilation process.

[0005] In order to solve the above problems, the utility model provides a breathing valve, including a valve body and a valve plate assembly; a valve cavity structure and a return flow channel structure are arranged inside the valve body; the valve cavity structure has a valve cavity inlet and a valve cavity outlet; the valve plate assembly is arranged in the valve cavity structure so that a partial area of ​​the valve cavity structure forms a non-linear flow channel structure; the two ends of the non-linear flow channel structure are respectively connected to the valve cavity inlet and the valve cavity outlet; the first end of the return flow channel structure is connected to the non-linear flow channel structure, and the second end of the return flow channel structure is connected to the valve cavity structure between the non-linear flow channel structure and the valve cavity inlet.

[0006] Optionally, the opening area of ​​the first end and the opening area of ​​the second end are both smaller than the cross-sectional area of ​​the flow channel of the valve cavity structure at the corresponding connecting point; and / or, the opening area of ​​the first end is larger than the opening area of ​​the second end.

[0007] Optionally, the breathing valve also includes a plugging piece; the return flow channel structure includes at least two flow path units connected in sequence; two adjacent flow path units are cross-connected to each other, and one end of each flow path unit is provided with an opening on the outer wall of the valve body; the openings and the plugging pieces are arranged in a one-to-one correspondence, and the plugging piece is used to seal the corresponding opening.

[0008] Optionally, the valve cavity structure includes an installation cavity and an air inlet passage communicating with the installation cavity. The valve plate assembly is installed in the installation cavity. One end of the air inlet passage away from the installation cavity is provided with the valve cavity inlet, and the air inlet passage communicates with the second end of the reflux passage structure.

[0009] Optionally, the valve plate assembly includes a connecting column and a plurality of valve plate units arranged at intervals along the connecting column and sleeved on the connecting column. Each of the plurality of valve plate units is provided with a through-port structure, and the through-port structures of two adjacent valve plate units are arranged in a staggered manner. A flow passage unit is formed between any two adjacent valve plate units and the side wall of the valve cavity structure, and adjacent flow passage units are communicated through the through-port structure to form the non-linear flow passage structure. At least one flow passage unit communicates with the reflux passage structure.

[0010] Optionally, the wall surface at the connection between the installation cavity and the air inlet passage is a stepped surface, and one valve plate unit of the valve plate assembly fits against the stepped surface.

[0011] Optionally, a threaded structure is provided on the outer wall of the valve body corresponding to the air inlet passage.

[0012] Optionally, the valve body includes a valve body and a valve cover. The valve cavity structure and the reflux passage structure are both arranged in the valve body. One end of the valve body is provided with the valve cavity inlet, and the other end is provided with an open end. The valve cover is arranged at the open end and forms the valve cavity outlet with the valve body at the connection.

[0013] In a second aspect, the present invention provides a drive system assembly, including the breathing valve as described above.

[0014] In a third aspect, the present invention provides a vehicle, including the breathing valve as described above, or including the drive system assembly as described above.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] During the ventilation process of the breathing valve, the airflow containing oil and gas components can enter the valve cavity structure of the valve body through the valve cavity inlet. When the airflow passes through the area of the valve cavity structure for accommodating the valve disc assembly, since the valve disc assembly can form a non-linear flow channel structure in part of the valve cavity structure, and the two ends of the non-linear flow channel structure are respectively connected to the valve cavity inlet and the valve cavity outlet, the airflow can be deflected under the guidance of the valve disc assembly and condense the oil and gas during the deflection process. At the same time, since the first end of the reflux flow channel structure is connected to the non-linear flow channel structure, and the second end of the reflux flow channel structure is connected to the valve cavity structure between the non-linear flow channel structure and the valve cavity inlet, when the airflow passes through the valve cavity structure, due to the existence of the non-linear flow channel structure, part of the airflow or condensed oil and gas can be refluxed through the reflux flow channel structure after being blocked by the non-linear flow channel structure. For example, the airflow can enter the reflux flow channel structure from the first end of the reflux flow channel structure, then converge into the valve cavity structure from the second end of the reflux flow channel structure, and condense the oil and gas in the reflux flow channel structure. Description of the Drawings

[0017] Figure 1 Internal schematic diagram of the breathing valve according to the embodiment of the present invention.

[0018] Figure 2 Airflow flow path schematic diagram of the breathing valve according to the embodiment of the present invention.

[0019] Figure 3 Structural schematic diagram of the valve body according to the embodiment of the present invention.

[0020] Figure 4 Cross-sectional view of the valve disc assembly according to the embodiment of the present invention.

[0021] Figure 5 Structural schematic diagram of the valve disc assembly according to the embodiment of the present invention.

[0022] Figure 6 Structural schematic diagram of the cover plate according to the embodiment of the present invention.

[0023] Figure 7 Explosion schematic diagram of the breathing valve according to the embodiment of the present invention.

[0024] Figure 8 Structural schematic diagram of the breathing valve according to the embodiment of the present invention.

[0025] Figure 9 Installation schematic diagram of the breathing valve according to the embodiment of the present invention.

[0026] Description of the reference numerals:

[0027] 100, valve body; 101, reflux flow path structure; 1011, flow path unit; 1012, opening; 102, valve cavity structure; 1021, valve cavity inlet; 1022, valve cavity outlet; 1023, flow path unit; 1024, installation cavity; 1025, air inlet channel; 1026, step structure; 1027, open opening; 103, non-linear flow path structure; 104, valve cover; 1041, cover plate; 1042, side edge; 1043, clamping member; 105, valve body; 1051, thread structure; 1052, flange; 200, valve disc assembly; 201, valve disc unit; 202, connecting column; 203, support column; 2011, through opening structure; 300, plug member; 400, sealing ring. Detailed implementation manners

[0028] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. Although some embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be construed as limited to the embodiments described herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present utility model. It should be understood that the drawings and embodiments of the present utility model are only for exemplary purposes and are not used to limit the protection scope of the present utility model.

[0029] The term "including" and its variations used herein are open-ended, that is, "including but not limited to"; the term "based on" is "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order or interdependence relationship of the functions performed by these devices, modules, or units.

[0030] It should be noted that the modification of "one" and "multiple" mentioned in the present utility model is illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0031] Such as Figure 1 , 2As shown in the figure, a breathing valve provided by an embodiment of the present utility model includes a valve body 100 and a valve plate assembly 200; a valve cavity structure 102 and a reflux channel structure 101 are provided inside the valve body 100; the valve cavity structure 102 has a valve cavity inlet 1021 and a valve cavity outlet 1022; the valve plate assembly 200 is arranged in the valve cavity structure 102 so that a partial area of the valve cavity structure 102 forms a non-linear channel structure 103; both ends of the non-linear channel structure 103 are respectively communicated with the valve cavity inlet 1021 and the valve cavity outlet 1022; the first end of the reflux channel structure 101 is communicated with the non-linear channel structure 103, and the second end of the reflux channel structure 101 is communicated with the valve cavity structure 102 between the non-linear channel structure 103 and the valve cavity inlet 1021.

[0032] Specifically, the overall shape of the valve body 100 is not specifically limited and is determined according to actual needs. A valve cavity structure 102 and a reflux channel structure 101 are provided inside the valve body 100; the valve cavity structure 102 has a valve cavity inlet 1021 and a valve cavity outlet 1022. Thus, an air flow containing oil and gas components can enter the valve cavity structure 102 through the valve cavity inlet 1021 and finally flow out to the outside through the valve cavity outlet 1022; the valve plate assembly 200 is arranged in the valve cavity structure 102 so that a partial area of the valve cavity structure 102 forms a non-linear channel structure 103, such as a spiral channel or a continuous zigzag channel structure. Thus, when the air flow containing oil and gas components passes through the valve cavity structure 102 accommodating the valve plate assembly 200, it can be deflected under the guidance of the valve plate assembly 200, and the oil and gas are condensed during the deflection process; both ends of the non-linear channel structure 103 are respectively communicated with the valve cavity inlet 1021 and the valve cavity outlet 1022. That is to say, the air flow containing oil and gas components can enter the valve cavity structure 102 through the valve cavity inlet 1021 and then flow out to the outside through the valve cavity outlet 1022 after passing through the non-linear channel structure 103; the first end of the reflux channel structure 101 is communicated with the non-linear channel structure 103, and the second end of the reflux channel structure 101 is communicated with the valve cavity structure 102 between the non-linear channel structure 103 and the valve cavity inlet 1021. Therefore, when the air flow containing oil and gas components passes through the valve cavity structure 102, due to the existence of the non-linear channel structure 103, part of the air flow or condensed oil and gas can enter the reflux channel structure 101 from the first end of the reflux channel structure 101 after being blocked by the non-linear channel structure 103, and then converge into the valve cavity structure 102 from the second end of the reflux channel structure 101.

[0033] In this embodiment, during the ventilation of the breathing valve, the air flow containing oil and gas components can enter the valve cavity structure 102 of the valve body 100 through the valve cavity inlet 1021. When the air flow passes through the area of the valve cavity structure 102 for accommodating the valve plate assembly 200, since the valve plate assembly 200 can form a non-linear flow channel structure 103 in part of the area of the valve cavity structure 102, and both ends of the non-linear flow channel structure 103 are respectively connected to the valve cavity inlet 1021 and the valve cavity outlet 1022, the air flow can be deflected under the guidance of the valve plate assembly 200 and the oil and gas can be condensed during the deflection process. At the same time, since the first end of the reflux channel structure 101 is connected to the non-linear flow channel structure 103 and the second end of the reflux channel structure 101 is connected to the valve cavity structure 102 between the non-linear flow channel structure 103 and the valve cavity inlet 1021, when the air flow passes through the valve cavity structure 102, due to the existence of the non-linear flow channel structure 103, part of the air flow or condensed oil and gas can realize reflux through the reflux channel structure 101 after being blocked by the non-linear flow channel structure 103. For example, the air flow can enter the reflux channel structure 101 from the first end of the reflux channel structure 101, then converge into the valve cavity structure 102 from the second end of the reflux channel structure 101, and the oil and gas can be condensed in the reflux channel structure 101.

[0034] In summary, compared with the breathing valve that prevents oil and gas overflow by adding a straight extended pipe, the breathing valve of this embodiment can change the flow direction of the air flow through the internal non-linear flow channel structure 103, block and condense the oil and gas during the deflection process, thereby effectively improving the oil blocking effect. And, part of the air flow or condensed oil and gas can enter the reflux channel structure 101 from the first end of the reflux channel structure 101 after being blocked by the non-linear flow channel structure 103, then converge into the valve cavity structure 102 from the second end of the reflux channel structure 101, and in the reflux channel structure 101, the air flow can also condense the oil and gas, thereby further improving the oil blocking effect.

[0035] At the same time, the breathing valve of this embodiment improves its internal flow channel to improve the oil blocking effect, so it no longer uses an extended pipe during use. On the one hand, it effectively improves the problem that the breathing valve has a large volume after adding an extended pipe. On the other hand, it reduces the probability of internal condensed water caused by the too long extended pipe. On the third hand, canceling the extended pipe can effectively reduce the cost.

[0036] Optionally, the opening area of the first end and the opening area of the second end are both smaller than the cross-sectional area of the flow channel at the corresponding connection of the valve cavity structure 102; and / or, the opening area of the first end is larger than the opening area of the second end.

[0037] Specifically, the reflux channel structure 101 may have multiple first ends. Through the multiple first ends, the reflux channel structure 101 can be respectively communicated with different section areas of the non-linear channel structure 103. The opening shapes of the first ends and the second ends of the reflux channel structure 101 may be circular, square or other irregular shapes, which are not limited here and are determined according to actual requirements. As Figure 1 shown, the opening shapes of both the first end and the second end are circular, and the cross-sectional areas of both openings are smaller than the channel cross-sectional area of the valve cavity structure 102 at the corresponding connection. As Figure 1 shown, the cross-sectional area of the first end is the vertical cross-sectional area; the channel cross-sectional area at the connection between the valve cavity structure 102 and the first end is the horizontal cross-sectional area, and the cross-sectional area of the first end is much smaller than the channel cross-sectional area at the connection between the valve cavity structure 102 and the first end. Similarly, the cross-sectional area of the second end is the vertical cross-sectional area; the channel cross-sectional area at the connection between the valve cavity structure 102 and the second end is the horizontal cross-sectional area, and the cross-sectional area of the second end is much smaller than the channel cross-sectional area at the connection between the valve cavity structure 102 and the second end.

[0038] In this optional embodiment, after the air flow enters the valve cavity structure 102 through the valve cavity inlet 1021, the air flow flows along the direction of the valve cavity structure 102. Since the opening areas of both the first end and the second end of the reflux channel structure 101 are smaller than the channel cross-sectional area of the valve cavity structure 102 at the corresponding connection, most of the air flow can still flow along the valve cavity structure 102 to normally realize the ventilation operation of the breathing valve.

[0039] Specifically, as Figure 1 shown, both the first end and the second end of the reflux channel structure 101 are vertical cross-sections, and the opening shapes of both are circular. Among them, the opening area of the first end is larger than that of the second end. In this way, when the air flow passes through the openings of the first end and the second end of the reflux channel structure 101, the air flow is more likely to enter the reflux channel structure 101 from the first end of the reflux channel structure 101 to realize the normal reflux of the reflux channel structure 101.

[0040] Optionally, the breathing valve further includes a plug member 300; the reflux channel structure 101 includes at least two flow path units 1011 connected in sequence; adjacent two flow path units 1011 are cross-connected to each other, and one end of each flow path unit 1011 has an opening 1012 on the outer wall of the valve body 100; the openings 1012 and the plug member 300 are arranged in one-to-one correspondence, and the plug member 300 is used to seal the corresponding opening 1012.

[0041] Specifically, the number of the flow path units 1011 may be two, three, four, etc., which are not limited here and are determined according to actual requirements. As Figure 2 、 3As shown, the reflux channel structure 101 includes three flow path units 1011, and the overall structure of the three is similar to a U shape; one end of two adjacent flow path units 1011 is cross-connected to each other and has an opening on the outer wall of the valve body 100 respectively; the number of the plugging members 300 is equal to the number of the openings 1012, that is to say, the number of both the plugging members 300 and the openings 1012 is three, and the three plugging members 300 are used to seal the corresponding openings 1012 respectively, and the connection manners between the plugging members 300 and the openings 1012 include but are not limited to snap connection or threaded connection.

[0042] In this optional embodiment, since two adjacent flow path units 1011 are cross-connected to each other and one end of each flow path unit 1011 has an opening 1012 on the outer wall of the valve body 100, when processing the reflux channel structure 101 inside the valve body 100, the arrangement of the openings 1012 facilitates the processing equipment to process the flow path units 1011 from the outside; meanwhile, after the reflux channel structure 101 is processed, the openings 1012 can be sealed by the plugging members 300, thereby restricting the air flow from overflowing to the outside from the openings 1012 or the condensed oil droplets from overflowing to the outside from here.

[0043] Optionally, two reflux channel structures 101 are taken as a group, and in at least one group of reflux channel structures 101, partial flow path units 1011 of the two reflux channel structures 101 are located on the same straight line.

[0044] Specifically, the number of the reflux channel structures 101 can be odd or even, which is not limited here and is determined according to actual requirements, and preferably even. As Figure 1 shown, the number of the reflux channel structures 101 is two, the overall shapes of the two reflux channel structures 101 are similar to a U shape and are symmetrically arranged, the flow path units 1011 of the two reflux channel structures 101 located above are on the same straight line, and the flow path units 1011 of the two reflux channel structures 101 located below are on the same straight line.

[0045] In this optional embodiment, since the openings at the first end and the second end of the reflux channel structure 101 are communicated with the valve cavity structure 102, when processing multiple reflux channel structures 101, if partial flow path units 1011 of two reflux channel structures 101 are located on the same straight line, they can be processed at one time, thereby saving process steps.

[0046] Optionally, the valve cavity structure 102 includes an installation cavity 1024 and an air inlet channel 1025 communicated with the installation cavity 1024. The valve plate assembly 200 is installed in the installation cavity 1024; a valve cavity inlet 1021 is provided at one end of the air inlet channel 1025 far away from the installation cavity 1024, and the air inlet channel 1025 is communicated with the second end of the reflux channel structure 101.

[0047] Specifically, the vertical cross-sectional shape of the installation cavity 1024 can be trapezoidal, and the vertical cross-section of the intake passage 1025 can be rectangular. The narrower end of the installation cavity 1024 is connected to one end of the intake passage 1025. The overall structure of the two is similar to the shape of a funnel. A valve cavity inlet 1021 is provided at the end of the intake passage 1025 far from the installation cavity 1024. Among them, the valve plate assembly 200 can be installed in the installation cavity 1024. Specifically, the circumferential side walls of the multiple valve plate units 201 of the valve plate assembly 200 are attached to the inner wall of the installation cavity 1024. Since the vertical cross-sectional shape of the installation cavity 1024 can be trapezoidal, the sizes of the multiple valve plate units 201 arranged at intervals are different. The intake passage 1025 is connected to the second end of the reflux passage structure 101. Part of the air flow or condensed oil and gas can enter the intake passage 1025 through the second end of the reflux passage structure 101, and flow back to the device connected to the valve cavity inlet 1021 of the breather valve through the valve cavity inlet 1021 of the intake passage 1025, for example, flow back into the fuel engine.

[0048] Optionally, the valve plate assembly 200 includes a connecting column 202 and multiple valve plate units 201 arranged at intervals along the connecting column 202 and sleeved on the connecting column 202. Each of the multiple valve plate units 201 is provided with a through-port structure 2011. The through-port structures 2011 of two adjacent valve plate units 201 are arranged in a staggered manner. Any two adjacent valve plate units 201 and the side wall of the valve cavity structure 102 enclose a flow channel unit 1023. The adjacent flow channel units 1023 are connected through the through-port structure 2011 to form a non-linear flow channel structure 103.

[0049] Specifically, the number of the valve plate units 201 can be three, four, five, etc., which is not limited here and is determined according to actual needs. As Figure 4 、 5 shown, there are three valve plate units 201. The three valve plate units 201 are arranged at intervals and sleeved on the connecting column 202. Each of the three valve plate units 201 is provided with a through-port structure 2011. The through-port structure 2011 can be either a notch provided at the edge of the valve plate unit 201 or a through-hole penetrating the valve plate unit 201. The through-port structures 2011 of two adjacent valve plate units 201 are arranged in a staggered manner on the horizontal plane, so as to change the flow direction of the air flow. Any two adjacent valve plate units 201 and the side wall of the valve cavity structure 102 enclose a flow channel unit 1023. The adjacent flow channel units 1023 are connected through the through-port structure 2011 to form a non-linear flow channel structure 103.

[0050] In this alternative embodiment, multiple valve plate units 201 are arranged at intervals to divide a partial area of the valve cavity structure 102 into multiple flow channel units 1023. Adjacent flow channel units 1023 are connected through through-port structures 2011 to form a non-linear flow channel structure 103. Since the multiple valve plate units 201 are arranged at intervals along the connecting column 202 and sleeved on the connecting column 202, and the through-port structures 2011 of adjacent valve plate units 201 are arranged in a staggered manner, after the air flow enters the corresponding flow channel unit 1023, part of the air flow first flows horizontally and can change its direction circumferentially around the connecting column 202 when passing through the connecting column 202 to form a spiral air flow, which not only increases the flow path of the air flow, improves the oil-blocking effect, but also effectively improves the air outlet efficiency.

[0051] Optionally, at least one flow channel unit 1023 is connected to the reflux flow channel structure 101.

[0052] Specifically, as Figure 4 , 5 shown, there are three valve plate units 201, so two flow channel units 1023 can be formed, and the lower flow channel units 1023 are respectively connected to the two reflux flow channel structures 101.

[0053] In this alternative embodiment, after the air flow enters the flow channel unit 1023, if the flow channel unit 1023 is connected to the reflux flow channel structure 101, then during the flow of the air flow, part of the air flow or condensed oil and gas can enter the reflux flow channel structure 101 from the first end of the reflux flow channel structure 101 after being blocked by the inner wall of the flow channel unit 1023.

[0054] Optionally, the wall surface at the connection of the installation cavity 1024 and the air inlet channel 1025 is a stepped surface 1026, and a valve plate unit 201 of the valve plate assembly 200 is attached to the stepped surface 1026.

[0055] Specifically, the wall surface at the connection of the installation cavity 1024 and the air inlet channel 1025 is a stepped surface 1026, and the stepped surface 1026 is 1 cm to 3 cm away from the outlet of the air inlet channel 1025; after the valve plate assembly 200 is installed in the installation cavity 1024, the lowermost valve plate unit 201 of the valve plate assembly 200 is attached to the stepped surface 1026.

[0056] In this alternative embodiment, after the valve plate assembly 200 is installed, due to the existence of the stepped surface 1026, the valve plate unit 201 of the valve plate assembly 200 close to the air inlet channel 1025 can be abutted and limited, so that there is a certain distance between the valve plate unit 201 and the connection of the installation cavity 1024 and the air inlet channel 1025. In this way, when the air flow first enters the installation cavity 1024, the blocking of the air flow by the valve plate assembly 200 can be reduced, so that more air flow can enter the accommodation cavity 1024.

[0057] Optionally, a threaded structure 1051 is provided on the outer wall of the valve body 100 corresponding to the intake passage 1025.

[0058] Specifically, a threaded structure 1051 is provided at the lower end of the valve body 105. The threaded structure 1051 can be a threaded connecting pipe, and the interior of the threaded connecting pipe forms a part of the intake passage 1025. The threaded connecting pipe is provided with external threads or internal threads to achieve threaded connection between the breather valve and external devices.

[0059] Further, in order to achieve sealing between the threaded structure 1051 and external devices, a sealing ring 400 can be provided at the threaded structure 1051.

[0060] Optionally, the valve body 100 includes a valve body 105 and a valve cover 104. The valve cavity structure 102 and the reflux flow passage structure 101 are both arranged inside the valve body 105. One end of the valve body 105 is provided with a valve cavity inlet 1021, and the other end is provided with an open mouth 1027; the valve cover 104 is arranged at the open mouth 1027, and a valve cavity outlet 1022 is provided at the connection between the valve cover 104 and the valve body 105.

[0061] Specifically, as Figure 1 、 7 、 shown in Figure 8, the valve body 100 is integrally divided into three layers. The first layer is disc-shaped and is the connection part between the cover plate 1041 and the flange 1052 of the valve body 105. The second layer is similar to a hexagonal prism and is the part inside the valve body 105 where the valve cavity structure 102 and the reflux flow passage structure 101 are provided. The third layer is similar to a cylinder and is the part inside the valve body 105 where the intake passage 1025 is provided. A threaded structure 1051 can be provided on the outer wall of the third layer. One end of the valve body 105 is the valve cavity inlet 1021, and the other end is an open mouth 1027; the valve cover 104 is buckled at the open mouth 1027, and a valve cavity outlet 1022 is formed at the connection between the valve cover 104 and the valve body 105.

[0062] Optionally, the valve cover 104 includes a cover plate 1041 and a side edge 1042 arranged circumferentially around the cover plate 1041; a part of the side edge 1042 extends inward to form a clamping member 1043, and the other part of the side edge 1042 forms a valve cavity outlet 1022 with the valve body 105; a flange 1052 is circumferentially arranged around one end of the valve body 105 facing the cover plate 1041, and the end face of the flange 1052 away from the cover plate 1041 is in contact with the clamping member 1043.

[0063] Specifically, as Figure 6As shown, the cover plate 1041 is circular in shape; a side edge 1042 is circumferentially arranged around the cover plate 1041, that is to say, the shape of the side edge 1042 is annular; at multiple positions of the side edge 1042, there are formed clamping members 1043 extending towards the inside, such as hooks or buckles, and a valve cavity outlet 1022 is formed between the other part of the side edge 1042 and the valve body 105; a flange 1052 is circumferentially arranged around one end of the valve body 105 facing the cover plate 1041, that is to say, the shape of the flange 1052 is annular, and the end face of the flange 1052 away from the cover plate 1041 is attached to the clamping member 1043; in this way, the clamping of the valve body 105 and the cover plate 1041 can be realized.

[0064] Further, the valve plate assembly 200 further includes a support column 203. One end of the support column 203 is connected to a valve plate unit 201, and the other end extends out of the open opening 1027 and is attached to the cover plate 1041.

[0065] In this embodiment, since the support column 203 extends out of the open opening 1027 and is attached to the cover plate 1041, and the end face of the flange 1052 of the valve body 105 away from the cover plate 1041 is attached to the clamping member 1043 of the side edge 1042, the valve cover 104 can be axially limited and fixed, so that the valve cover 104 is stably fixed at the open opening 1027 of the valve body 105. At the same time, a gap can be formed between the cover plate 1041 and the valve body 105 in the axial direction to facilitate the formation of an air flow channel leading to the valve cavity outlet 1022; specifically, after the air flow passing through the valve body 105 enters the valve cover 104, under the guidance of the cover plate 1041 and the side edge 1042, it will change direction and finally flow out from the valve cavity outlet 1022 formed between the side edge 1042 and the valve body 105, further improving the oil blocking effect.

[0066] A drive system assembly provided by an embodiment of the present utility model includes the breather valve as described above.

[0067] Specifically, the drive system assembly is a fuel drive system assembly or a hybrid drive system assembly for a vehicle, and the drive system assembly further includes components such as a fuel engine and a fuel tank. As Figure 9 shown, such components are provided with the breather valve as described above to realize the ventilation inside such components.

[0068] The beneficial effects of the drive system assembly of this embodiment compared with the prior art are the same as those of the above-mentioned breather valve, and will not be elaborated here.

[0069] A vehicle provided by an embodiment of the present utility model includes the breather valve as described above, or includes the drive system assembly as described above.

[0070] The beneficial effects of the vehicle of this embodiment compared with the prior art are the same as those of the above-mentioned breather valve, and will not be elaborated here.

[0071] Although the present utility model is disclosed as above, the protection scope of the present utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. A breathing valve, characterized in that: The invention comprises a valve body (100) and a valve plate assembly (200); a valve cavity structure (102) and a return flow channel structure (101) are arranged inside the valve body (100); the valve cavity structure (102) has a valve cavity inlet (1021) and a valve cavity outlet (1022); the valve plate assembly (200) is arranged in the valve cavity structure (102) so that a partial area of ​​the valve cavity structure (102) forms a non-linear flow channel structure (103); two ends of the non-linear flow channel structure (103) are respectively connected to the valve cavity inlet (1021) and the valve cavity outlet (1022); the first end of the return flow channel structure (101) is connected to the non-linear flow channel structure (103), and the second end of the return flow channel structure (101) is connected to the valve cavity structure (102) between the non-linear flow channel structure (103) and the valve cavity inlet (1021).

2. The breathing valve according to claim 1, characterized in that: The opening area of ​​the first end and the opening area of ​​the second end are both smaller than the cross-sectional area of ​​the flow channel of the valve cavity structure (102) at the corresponding connection point; and / or the opening area of ​​the first end is larger than the opening area of ​​the second end.

3. The breathing valve according to claim 1, characterized in that: It also includes a plug (300); the reflux channel structure (101) includes at least two flow path units (1011) connected in sequence; two adjacent flow path units (1011) are cross-connected to each other, and one end of each flow path unit (1011) is provided with an opening (1012) on the outer wall of the valve body (100); the opening (1012) and the plug (300) are arranged in a one-to-one correspondence, and the plug (300) is used to seal the corresponding opening (1012).

4. The breathing valve according to claim 1, characterized in that: The valve cavity structure (102) comprises an installation cavity (1024) and an air inlet channel (1025) connected to the installation cavity (1024), and the installation cavity (1024) is used to install the valve plate assembly (200); the valve cavity inlet (1021) is provided at one end of the air inlet channel (1025) away from the installation cavity (1024), and the air inlet channel (1025) is connected to the second end of the return flow channel structure (101).

5. The breathing valve according to claim 4, characterized in that: The valve plate assembly (200) comprises a connecting column (202) and a plurality of valve plate units (201) arranged at intervals along the connecting column (202) and sleeved on the connecting column (202); the plurality of valve plate units (201) are each provided with a through-port structure (2011), and the through-port structures (2011) of two adjacent valve plate units (201) are staggered; any two adjacent valve plate units (201) and the side wall of the valve cavity structure (102) form a flow channel unit (1023), and the adjacent flow channel units (1023) are connected via the through-port structure (2011) to form the non-linear flow channel structure (103), and at least one of the flow channel units (1023) is connected to the reflux flow channel structure (101).

6. The breathing valve according to claim 5, characterized in that: The wall surface at the connection between the installation cavity (1024) and the air inlet passage (1025) is a stepped surface (1026), and one of the valve plate units (201) of the valve plate assembly (200) is in contact with the stepped surface (1026).

7. The breathing valve according to claim 4, characterized in that: A portion of the outer wall of the valve body (100) corresponding to the air inlet passage (1025) is provided with a threaded structure (1051).

8. The breathing valve according to any one of claims 1 to 7, characterized in that: The valve body (100) comprises a valve body (105) and a valve cover (104); the valve cavity structure (102) and the return flow channel structure (101) are both arranged in the valve body (105); one end of the valve body (105) is provided with the valve cavity inlet (1021), and the other end is provided with an open port (1027); the valve cover (104) is arranged at the open port (1027), and forms the valve cavity outlet (1022) at the connection with the valve body (105).

9. A drive system assembly, characterized in that: Comprising a breathing valve as described in any one of claims 1 to 8.

10. A vehicle, characterized in that: It comprises the breathing valve as described in any one of claims 1 to 8, or it comprises the drive system assembly as described in claim 9.

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