Breather valve and power system of oil-cooled motor

Abstract

The utility model relates to a ventilation valve and a power system of an oil-cooled motor, the ventilation valve is used for balancing the pressure difference between the inside and the outside of the oil-cooled motor, the ventilation valve comprises a ventilation channel main body, an air outlet ventilation valve and a hydrophobic ventilation film, the ventilation channel main body is used for being connected with the inside of the oil-cooled motor, and the air outlet ventilation valve is used for leading out air in the oil-cooled motor. The air inlet ventilation valve is used for guiding air into the oil cooling motor, the hydrophobic ventilation film is arranged on the outer side of the air inlet ventilation valve, and the air can enter the air inlet ventilation valve only after passing through the hydrophobic ventilation film; and the air outlet ventilation valve and the air inlet ventilation valve are respectively connected to different positions of the ventilation channel main body. According to the scheme, the air outlet ventilation valve and the air inlet ventilation valve are arranged, and the hydrophobic ventilation film is arranged on the outer side of the air inlet ventilation valve and filters water vapor in inlet air; in addition, an air inlet channel and an air outlet channel of the ventilation valve do not coincide, mutual interference of air inlet and air outlet is avoided, oil dirt accumulation near the air inlet ventilation valve is avoided, and therefore the service life of the hydrophobic ventilation film is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air intake valve structures, in particular to a breathable valve and a power system of an oil-cooled motor. Background Art

[0002] There are currently two commonly used methods for the ventilation structure of oil-cooled motors:

[0003] One is a one-way breathable valve, the core component of which is a one-way valve. After it is installed, the gas in the motor cavity can only be released but not sucked in. The drawback of this solution is that when going to high altitudes, a large amount of gas in the motor cavity will be discharged. In addition, the heat generated during operation on the plateau is more serious, so more gas in the cavity is discharged. After that, the gas in the motor cavity has been in negative pressure. When returning to low altitudes, the pressure difference between the inside and outside of the motor cavity is greater, which affects many aspects of the motor, such as the heat conduction inside the motor, the sealing performance inside the motor, and the insulation performance inside the motor.

[0004] The other is the vent plug, the core components of which are a hydrophobic breathable membrane + oil-absorbing cotton. After it is installed, the gas in the motor cavity absorbs the oil and gas through the oil-absorbing cotton, and then releases through the breathable membrane. The external gas is first filtered through the hydrophobic breathable membrane, and then inhaled through the oil-absorbing cotton. The biggest drawback of this solution is that the oil-absorbing cotton has a certain lifespan. When the adsorption effect of the oil-absorbing cotton is poor, when the hydrophobic breathable membrane adsorbs the oil in the motor cavity, the hydrophobic breathable membrane loses its breathability function, and a closed space is formed in the motor cavity, which is not conducive to the regulation of the pressure difference between the inside and outside of the motor, thereby affecting many aspects of the motor, such as the heat conduction inside the motor, the sealing performance inside the motor, and the insulation performance inside the motor. Utility Model Content

[0005] Based on this, a breather valve and a power system for an oil-cooled motor are provided to solve the problem in the prior art that when adjusting the internal and external pressure difference of the motor, the internal and external pressure difference of the motor is difficult to adjust or the life is short due to the use of a breather valve with overlapping inlet and outlet channels.

[0006] On the one hand, the utility model provides a breathable valve for an oil-cooled motor, the breathable valve is used to balance the pressure difference between the inside and outside of the oil-cooled motor, and the breathable valve includes:

[0007] A breathable channel body, the breathable channel body is used to be connected to the inside of the oil-cooled motor;

[0008] The air outlet vent valve is used to discharge the gas in the oil-cooled motor;

[0009] An air intake vent valve is used to introduce gas into the oil-cooled motor;

[0010] A hydrophobic breathable membrane is arranged on the outside of the air inlet breathable valve, and the gas must first pass through the hydrophobic breathable membrane before entering the air inlet breathable valve;

[0011] The air outlet ventilation valve and the air inlet ventilation valve are respectively connected to different positions of the ventilation channel body.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows.

[0013] In one implementation, the air permeable channel body includes:

[0014] An air outlet channel, the end of which is connected to an air outlet vent valve;

[0015] An air intake passage, an end of which is connected with an air intake vent valve;

[0016] The main channel is used to connect the inside of the oil-cooled motor, and both the air outlet channel and the air inlet channel are connected to the main channel.

[0017] In one implementation, one end of the main channel is used to connect to the interior of the oil-cooled motor, and the other end of the main channel is connected to both the outlet channel and the inlet channel; the outlet channel and the inlet channel extend in opposite directions.

[0018] In one implementation, the breathable valve further comprises:

[0019] An air outlet sealing cover, which is used to press the air outlet vent valve tightly against one end of the vent channel body;

[0020] An air intake sealing cover, which is used to press the air intake breathable valve tightly against the other end of the breathable channel body;

[0021] Among them, the air outlet ventilation valve and the air inlet ventilation valve are both one-way ventilation valves.

[0022] In one implementation, the air permeable channel body includes:

[0023] A first shaft portion, the first shaft portion is sleeved with the air outlet sealing cover;

[0024] a second shaft portion, the second shaft portion being sleeve-connected with the air intake sealing cover;

[0025] A connecting shaft portion, the connecting shaft portion is used to be connected to the outer wall of the casing of the oil-cooled motor;

[0026] A first clip, the first clip is arranged on the outer diameter of the first shaft portion, and the first clip and the second clip groove on the air outlet sealing cover form a clip connection structure;

[0027] The first clamping groove penetrates through the outer wall of the second shaft portion, and the first clamping groove and the second clamp on the air intake sealing cover form a clamping structure.

[0028] In one implementation, the air intake sealing cover presses the air intake breathable valve into the second shaft portion, and a hydrophobic breathable film is attached between the air intake sealing cover and the stopper of the second shaft portion in a surrounding manner;

[0029] The breathable valve also includes:

[0030] The sealing ring surrounds the outer wall of the connecting shaft and abuts against the connecting shaft and the housing of the oil-cooled motor at the same time.

[0031] In one implementation, the breathable valve further comprises:

[0032] The air intake protection cover surrounds and is sleeved on the outer periphery of the air intake sealing cover, and forms a local protection structure for the hydrophobic breathable membrane.

[0033] In one implementation, the air intake protection cover includes:

[0034] The air holes are opened along the radial direction of the air inlet protection cover, and at least two air holes are provided and are symmetrically arranged.

[0035] In one implementation, the air permeable channel body further includes:

[0036] A bracket extending laterally from the main body of the air permeable channel;

[0037] A mounting hole is provided on the bracket and is used to mount the breathable valve on the housing of the oil-cooled motor;

[0038] The breathable valve also includes:

[0039] Steel sleeve, the steel sleeve is inserted into the mounting hole.

[0040] On the other hand, the utility model also provides a power system, including a breather valve of an oil-cooled motor, and further comprising:

[0041] The oil-cooled motor has a breather valve connected to the outer wall of the oil-cooled motor.

[0042] The beneficial effects of the utility model are as follows: since the gas going out of the oil-cooled motor carries some oil stains, and the gas entering the oil-cooled motor is ordinary air without oil stains, the gas entering the oil-cooled motor carries water vapor and the water vapor needs to be filtered out; therefore, the present application adopts an air outlet breathable valve for air outlet and an air inlet breathable valve for air inlet, thereby avoiding the problem of the motor being unable to intake air caused by the use of a one-way air outlet breathable valve in the prior art; a hydrophobic breathable membrane is arranged on the outside of the air inlet breathable valve, so that the hydrophobic breathable membrane can filter water vapor in the intake air; in addition, the air outlet breathable valve and the air inlet breathable valve of the present application are respectively connected to different positions of the air permeable channel body, so that the air inlet and air outlet channels of the breathable valve do not overlap, thereby avoiding mutual interference between the inlet and outlet air, and avoiding the accumulation of oil stains near the air inlet breathable valve, thereby improving the service life of the hydrophobic breathable membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A cross-sectional schematic diagram of an oil-cooled motor after the breather valve is installed in one embodiment;

[0044] Figure 2 for Figure 1 A schematic diagram of the structure with an air intake arrow marked in the middle;

[0045] Figure 3 for Figure 1 A schematic diagram of the structure with an air outlet arrow marked in the middle;

[0046] Figure 4 An exploded view of a breather valve for an oil-cooled motor in another embodiment.

[0047] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0048] 100, air permeable channel body; 101, air outlet channel; 102, air inlet channel; 103, main channel; 104, first shaft portion; 105, second shaft portion; 106, connecting shaft portion; 107, first clip; 108, first slot; 109, bracket; 110, mounting hole;

[0049] 200, air outlet vent valve; 300, air inlet vent valve; 400, hydrophobic vent membrane;

[0050] 500, air outlet sealing cover; 501, second card slot;

[0051] 600, air intake sealing cover; 601, second clip;

[0052] 700, sealing ring;

[0053] 800, air inlet protection cover; 801, air vent;

[0054] 900, Steel sleeve. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] A breather valve for oil-cooled motors, see Figure 1 , Figure 2 and Figure 3 The air breather valve is used to balance the pressure difference between the inside and outside of the oil-cooled motor. The air breather valve includes an air breather channel body 100, an air outlet air breather valve 200 and a hydrophobic air breather membrane 400. The air breather channel body 100 is used to be connected to the inside of the oil-cooled motor. The air outlet air breather valve 200 is used to guide the gas in the oil-cooled motor. The air inlet air breather valve 300 is used to introduce the gas into the oil-cooled motor. The hydrophobic air breather membrane 400 is arranged on the outside of the air inlet air breather valve 300, and the gas needs to pass through the hydrophobic air breather membrane 400 before entering the air inlet air breather valve 300; the air outlet air breather valve 200 and the air inlet air breather valve 300 are respectively connected to different positions of the air breather channel body 100.

[0057] By adopting the above technical scheme, since the gas going out of the oil-cooled motor carries some oil stains, and the gas entering the oil-cooled motor is ordinary air without oil stains, the gas entering the oil-cooled motor carries water vapor and the water vapor needs to be filtered out; therefore, the present application adopts an air outlet breathable valve 200 for air outlet and an air inlet breathable valve 300 for air inlet, thereby avoiding the problem of the motor being unable to intake air caused by the use of a one-way air outlet breathable valve in the prior art; the hydrophobic breathable membrane 400 is arranged on the outside of the air inlet breathable valve 300, so that the hydrophobic breathable membrane 400 can filter water vapor in the intake air; in addition, the air outlet breathable valve 200 and the air inlet breathable valve 300 of the present application are respectively connected to different positions of the air permeable channel body 100, so that the air inlet and outlet channels 101 of the breathable valve do not overlap, thereby avoiding mutual interference between the inlet and outlet air, and avoiding the accumulation of oil stains near the air inlet breathable valve 300, thereby improving the service life of the hydrophobic breathable membrane 400.

[0058] In some embodiments, see Figure 1 , Figure 2 and Figure 3The air permeable channel body 100 includes an air outlet channel 101, an air inlet channel 102 and a main channel 103. The end of the air outlet channel 101 is connected to an air outlet breathable valve 200, and the end of the air inlet channel 102 is connected to an air inlet breathable valve 300. The main channel 103 is used to connect to the inside of the oil-cooled motor, and the air outlet channel 101 and the air inlet channel 102 are both connected to the main channel 103. In this way, the air permeable channel body 100 is divided into an air outlet channel 101, an air inlet channel 102 and a main channel 103, and is connected to the air outlet channel 101 and the air inlet channel 102 at the same time through the main channel 103, so that the air intake along the air inlet channel 102 and the air outlet along the air outlet channel 101 can enter and exit the oil-cooled motor through the main channel 103. Since the main channel 103 is connected to the inside of the oil-cooled motor, the oil-cooled motor can be ventilated inside and outside and the air pressure is balanced when the pressure difference reaches a set value.

[0059] In some embodiments, see Figure 1 , Figure 2 and Figure 3 One end of the main channel 103 is used to connect to the inside of the oil-cooled motor, and the other end of the main channel 103 is connected to the outlet channel 101 and the inlet channel 102 at the same time; the outlet channel 101 and the inlet channel 102 extend in opposite directions. In this way, since the outlet channel 101 and the inlet channel 102 extend in opposite directions, the distance between the outlet air-permeable valve 200 and the inlet air-permeable valve 300 is increased, thereby maximally avoiding the influence of oil pollution in the outlet air on the inlet air-permeable valve 300 and the hydrophobic air-permeable membrane 400, reducing the probability of the hydrophobic air-permeable membrane 400 being contaminated, and facilitating the improvement of the service life of the air-permeable valve.

[0060] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The air-permeable valve further comprises an outlet sealing cover 500 and an inlet sealing cover 600. The outlet sealing cover 500 is used to press the outlet air-permeable valve 200 against one end of the air-permeable channel body 100; the inlet sealing cover 600 is used to press the inlet air-permeable valve 300 against the other end of the air-permeable channel body 100; wherein the outlet air-permeable valve 200 and the inlet air-permeable valve 300 are both one-way air-permeable valves. In this way, the outlet sealing cover 500 is provided to press the outlet air-permeable valve 200, and the corresponding inlet sealing cover 600 is provided to press the inlet air-permeable valve 300, thereby ensuring that the outlet air-permeable valve 200 and the inlet air-permeable valve 300 are stably fixed on the air-permeable channel body 100, thereby improving the stability of the air-permeable valve in use.

[0061] In a specific embodiment, since both the outlet vent valve 200 and the inlet vent valve 300 are one-way vent valves, that is, when the internal and external pressure difference of the oil-cooled motor reaches the threshold of the two one-way vent valves, the outlet vent valve 200 and the inlet vent valve 300 will automatically open and discharge or inhale air to balance the air pressure. In the embodiment, the threshold value can be set to 0.01 Pa: when the internal air pressure of the oil-cooled motor is greater than the external air pressure by more than 0.01 Pa, the outlet vent valve 200 is in an open state, the inlet vent valve 300 is in a closed state, and the gas flows out of the interior of the oil-cooled motor and is deflated; when the internal air pressure of the oil-cooled motor is less than the external air pressure by more than 0.01 Pa, the outlet vent valve 200 is in a closed state, the inlet vent valve 300 is in an open state, and the gas flows into the interior of the oil-cooled motor and is inhaled.

[0062] In some embodiments, see Figure 3 and Figure 4 The air permeable channel body 100 includes a first shaft portion 104, a second shaft portion 105, a connecting shaft portion 106, a first clip 107 and a first slot 108. The first shaft portion 104 is sleeved with the outlet sealing cover 500, the second shaft portion 105 is sleeved with the inlet sealing cover 600, the connecting shaft portion 106 is used to be connected to the outer wall of the casing of the oil-cooled motor, the first clip 107 is arranged on the outer diameter of the first shaft portion 104, the first clip 107 and the second slot 501 on the outlet sealing cover 500 form a clamping structure, the first slot 108 runs through the outer wall of the second shaft portion 105, and the first slot 108 and the second clip 601 on the inlet sealing cover 600 form a clamping structure. In this way, the first shaft portion 104 and the second shaft portion 105 are provided to increase the distance between the outlet ventilation valve 200 and the inlet ventilation valve 300 and reduce mutual influence; a first clip 107 is provided on the outer wall of the first shaft portion 104, and a clamping structure is formed by the first clip 107 and the second clamping groove 501 to clamp and fix the first shaft portion 104 and the outlet sealing cover 500 so that the outlet ventilation valve 200 is compressed; a first clamping groove 108 is provided on the outer wall of the second shaft portion 105, and a clamping structure is formed by the first clamping groove 108 and the second clamp 601 to clamp and fix the second shaft portion 105 and the inlet sealing cover 600 so that the inlet ventilation valve 300 is compressed.

[0063] For details, see Figure 3 and Figure 4 The clamping structure formed by the clamping slot and the clamp is easy to disassemble, so that the entire breathable valve is easy to repair and replace parts. The first clamp 107 and the second clamp 601 are both structures that can be compressed along the axial direction, and both clamps have a certain elasticity. The second clamping slot 501 and the second clamping slot 501 are both hole structures that penetrate in the radial direction, so that the clamp and the clamping slot are easy to install and disassemble.

[0064] In some embodiments, see Figure 1 and Figure 4The air intake sealing cover 600 presses the air intake breathable valve 300 into the second shaft portion 105, and a hydrophobic breathable film 400 is attached between the air intake sealing cover 600 and the stopper of the second shaft portion 105 in a surrounding manner; the breathable valve also includes a sealing ring 700, which surrounds the outer wall of the connecting shaft portion 106, and the sealing ring 700 abuts against the connecting shaft and the housing of the oil-cooled motor at the same time. In this way, by fixing the hydrophobic breathable film 400 in a pasting manner, the installation method of the hydrophobic breathable film 400 is simplified and the installation efficiency of the hydrophobic breathable film 400 is improved, and at the same time, the sealing inside the hydrophobic breathable film 400 can be effectively guaranteed, so that the gas needs to pass through the hydrophobic breathable film 400 before reaching the position of the air intake breathable valve 300, thereby ensuring the removal of water vapor in the intake air; the sealing ring 700 is used to ensure the air tightness of the connection between the connecting shaft portion 106 and the housing of the oil-cooled motor, and effectively ensure the sealing of the connection between the breathable valve and the oil-cooled motor.

[0065] Specifically, the outer wall of the connecting shaft portion 106 of the air permeable channel body 100 is provided with a concave sealing groove along the circumferential direction, and the sealing ring 700 can be partially embedded in the sealing groove, that is, the sealing ring 700 protrudes out of the sealing groove in the radial direction. In this way, when the sealing ring 700 is used for sealing, the position of the sealing ring 700 is positioned, thereby avoiding the sliding of the sealing ring 700 and ensuring the sealing effect.

[0066] In some embodiments, see Figure 1 and Figure 4 The air-permeable valve further includes an air-intake protective cover 800, which surrounds and sleeves the outer periphery of the air-intake sealing cover 600 and forms a local protective structure for the hydrophobic air-permeable membrane 400. In this way, by providing the air-intake protective cover 800, a circumferential protective effect is formed for the surrounding and bonded hydrophobic air-permeable membrane 400; because the air-intake protective cover 800 only protects a part of the hydrophobic air-permeable membrane 400, the hydrophobic air-permeable membrane 400 can smoothly inlet air.

[0067] Specifically, the protective cover is connected to and clamped with the air channel body 100 through a clip structure. For example, in one of the protective cover and the air channel body 100, a clip structure can be provided on the air channel body 100, and the protective cover is sleeved on the outside of the step structure of the air channel body 100 and is provided with a clip structure; wherein the clip structure can be compressed and deformed along the circumferential direction, and the clip structure runs through the radial direction of the protective cover, thereby facilitating the connection and disassembly of the protective cover and the air channel body 100.

[0068] In some embodiments, see Figure 1 and Figure 4The air inlet protective cover 800 includes air holes 801, which are opened along the radial direction of the air inlet protective cover 800. There are at least two air holes 801, and the air holes 801 are symmetrically arranged. In this way, the air holes 801 are arranged to facilitate gas to pass through the hydrophobic breathable membrane 400 and the air inlet breathable valve 300 in sequence, thereby ensuring smooth air intake. The symmetrical arrangement of the air holes 801 facilitates the processing and installation of the air inlet protective cover 800.

[0069] In some embodiments, see Figure 1 and Figure 4 The air-permeable channel body 100 further includes a bracket 109 and a mounting hole 110. The bracket 109 extends in the lateral direction of the air-permeable channel body 100. The mounting hole 110 is provided on the bracket 109. The mounting hole 110 is used to mount the air-permeable valve on the housing of the oil-cooled motor. The air-permeable valve further includes a steel sleeve 900, which is inserted into the mounting hole 110. In this way, the bracket 109 is provided to facilitate fixing the air-permeable valve as a whole on the housing of the oil-cooled motor through the mounting hole 110. The steel sleeve 900 is provided and inserted into the mounting hole 110 of the oil-cooled motor, which ensures the stability of the mounting hole 110 when installing by bolts, etc., and can avoid the crushing of the mounting hole 110.

[0070] Specifically, when the air-permeable valve is injection-molded, the steel sleeve 900 can be embedded in the axial direction of the mounting hole 110 to facilitate a stable connection between the steel sleeve 900 and the air-permeable valve, while allowing the steel sleeve 900 to improve the position stability of the mounting hole 110 .

[0071] A power system comprises a breathable valve of an oil-cooled motor and the oil-cooled motor, wherein the breathable valve is connected to the outer wall of the oil-cooled motor.

[0072] In specific use, the pressure difference between the inside and outside of the oil-cooled motor is adjusted by the air outlet breathable valve 200 and the air inlet breathable valve 300; when the oil-cooled motor is not working, the air pressure inside and outside is in a balanced state, and the air outlet breathable valve 200 and the air inlet breathable valve 300 are both in a closed state. When the parts are tested for IP67 level, water and dust cannot pass through the air outlet path because there is a one-way breathable valve in the air outlet path; dust cannot enter the hydrophobic breathable membrane 400 because there is a hydrophobic breathable membrane 400 in the air inlet path, and water and dust will fall from the bottom of the breathable channel body 100 due to gravity. Compared with the one-way breathable valve on the market, this application achieves the purpose of two-way ventilation and solves the problem of internal negative pressure; compared with the vent plug on the market, this application achieves the advantages of increased service life and small size.

[0073] See also Figure 2 and Figure 3 , the direction of the arrow shows the direction of air inlet or outlet, Figure 2 The intake arrow is marked. Figure 3 The exhaust arrow is marked.

[0074] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0075] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A breather valve for an oil-cooled motor, the breather valve is used to balance the pressure difference between the inside and outside of the oil-cooled motor, characterized in that: The breathable valve comprises: A ventilation channel body (100), the ventilation channel body (100) being used to be connected to the inside of the oil-cooled motor; An air outlet vent valve (200), the air outlet vent valve (200) being used to discharge the gas in the oil-cooled motor; An air intake vent valve (300), the air intake vent valve (300) being used to introduce gas into the oil-cooled motor; A hydrophobic breathable membrane (400), wherein the hydrophobic breathable membrane (400) is arranged on the outside of the air inlet breathable valve (300) and ensures that gas must first pass through the hydrophobic breathable membrane (400) before entering the air inlet breathable valve (300); The air outlet ventilation valve (200) and the air inlet ventilation valve (300) are respectively connected to different positions of the ventilation channel body (100).

2. The breather valve for an oil-cooled motor according to claim 1, characterized in that: The air permeable channel body (100) comprises: An air outlet channel (101), an end of the air outlet channel (101) being connected to the air outlet breathable valve (200); An air intake passage (102), wherein an end of the air intake passage (102) is connected to the air intake breathable valve (300); A main channel (103), the main channel (103) is used to connect the inside of the oil-cooled motor, and the air outlet channel (101) and the air inlet channel (102) are both in communication with the main channel (103).

3. The breather valve for an oil-cooled motor according to claim 2, characterized in that: One end of the main channel (103) is used to connect to the interior of the oil-cooled motor, and the other end of the main channel (103) is simultaneously connected to the air outlet channel (101) and the air intake channel (102); the air outlet channel (101) and the air intake channel (102) extend in opposite directions.

4. The breather valve for an oil-cooled motor according to claim 1, characterized in that: The breathable valve also includes: An air outlet sealing cover (500), the air outlet sealing cover (500) being used to press the air outlet breathable valve (200) against one end of the breathable channel body (100); An air intake sealing cover (600), the air intake sealing cover (600) being used to press the air intake breathable valve (300) against the other end of the breathable channel body (100); Wherein, the air outlet vent valve (200) and the air inlet vent valve (300) are both one-way vent valves.

5. The breather valve for an oil-cooled motor according to claim 4, characterized in that: The air permeable channel body (100) comprises: A first shaft portion (104), wherein the first shaft portion (104) is sleeved with the air outlet sealing cover (500); A second shaft portion (105), wherein the second shaft portion (105) is sleeved with the air intake sealing cover (600); A connecting shaft portion (106), the connecting shaft portion (106) being used to be connected to an outer wall of a casing of the oil-cooled motor; A first clip (107), wherein the first clip (107) is arranged on the outer diameter of the first shaft portion (104), and the first clip (107) and the second clip groove (501) on the air outlet sealing cover (500) form a clip connection structure; A first clamping groove (108), wherein the first clamping groove (108) penetrates the outer wall of the second shaft portion (105), and the first clamping groove (108) and the second clamp (601) on the air intake sealing cover (600) form a clamping structure.

6. The breather valve for an oil-cooled motor according to claim 5, characterized in that: The air intake sealing cover (600) presses the air intake breathable valve (300) into the second shaft portion (105), and the hydrophobic breathable membrane (400) is adhered between the air intake sealing cover (600) and the stopper of the second shaft portion (105) in a surrounding manner; The breathable valve also includes: A sealing ring (700) surrounds the outer wall of the connecting shaft portion (106), and the sealing ring (700) abuts against the connecting shaft and the housing of the oil-cooled motor at the same time.

7. The breather valve for an oil-cooled motor according to claim 6, characterized in that: The breathable valve also includes: An air intake protection cover (800) surrounds and is sleeved on the outer periphery of the air intake sealing cover (600) and forms a local protection structure for the hydrophobic breathable membrane (400).

8. The breather valve for an oil-cooled motor according to claim 7, characterized in that: The air intake protection cover (800) comprises: A vent hole (801), wherein the vent hole (801) is opened along the radial direction of the air inlet protection cover (800), and at least two vent holes (801) are provided and the vent holes (801) are symmetrically arranged.

9. The breather valve for an oil-cooled motor according to any one of claims 1 to 8, characterized in that: The air permeable channel body (100) further comprises: A support (109), wherein the support (109) extends in a lateral direction of the air permeable channel body (100); A mounting hole (110), the mounting hole (110) being provided on the bracket (109), and the mounting hole (110) being used for mounting the air-permeable valve on the casing of the oil-cooled motor; The breathable valve also includes: A steel sleeve (900) is inserted into the mounting hole (110).

10. A power system, characterized in that: The vent valve of the oil-cooled motor according to any one of claims 1 to 9 further comprises: The oil-cooled motor, the breathable valve is connected to the outer wall of the oil-cooled motor.

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