Breathable water-blocking cover and coffee machine
By designing breathable and water-blocking pores on the coffee machine lid, the problems of poor steam exhaust and liquid leakage in existing technologies are solved, simplifying the structure, reducing production costs, and improving safety in use.
Patent Information
- Application Number
- CN202520230834.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing coffee machine lids are prone to water vapor leakage when venting after heating, have complex structures, and existing one-way valves are prone to water leakage. Existing technologies cannot effectively solve the problem of the lid being pushed out when liquid is vented, and the manufacturing process is complex and costly.
Design a breathable and water-blocking cover by setting channels and mounting bodies on the cover body to form multiple breathable and water-blocking pores. The maximum cross-sectional size of the pores is 0.1mm~5mm, which allows water vapor to escape but prevents liquid from flowing out, simplifying the structure and reducing costs.
It achieves the goal of preventing liquid leakage while venting, simplifies the production process, reduces costs, and facilitates safe use by users.
Smart Images
Figure CN223682370U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of household appliances, specifically, relates to a breathable water -resistant cover and coffee machine. BACKGROUND
[0002] With the continuous enrichment of life, household appliances are widely used in family life, such as coffee machine. The existing coffee machine etc. is usually matched with a cover body, and the liquid in the coffee machine usually needs to be vented after heating.
[0003] After the coffee machine is covered with the cover body, the internal liquid is heated and water vapor is generated. If the water vapor is not vented, the water vapor in the coffee machine is easy to push out the cover body, but cannot leak water. For example, when the user holds the coffee machine for extraction, the coffee machine may be inclined, so the structure for venting also has the function of not leaking water. The prior art is to set a one-way valve on the cover body, which has a complex structure, a complex production process and high cost. SUMMARY
[0004] The utility model embodiment proposes a breathable water -resistant cover and coffee machine to improve the above technical problem.
[0005] The utility model embodiment realizes the above purpose through the following technical scheme.
[0006] The utility model embodiment provides a breathable water -resistant cover, the breathable water -resistant cover is used for detachably installing in the main body, the breathable water -resistant cover is used for covering the liquid cavity of the main body, and the breathable water -resistant cover comprises:
[0007] Cover main body, the cover main body is equipped with the channel, the channel penetrates the cover main body, the channel has the air inlet and the air outlet that communicate with each other, and the air outlet is used for communicating with the outside world;
[0008] Mounting body, the mounting body is detachably installed in the channel, when the mounting body is installed in the channel, a plurality of breathable water -resistant interstices are formed between the outer peripheral wall of the mounting body and the inner wall of the channel, the plurality of breathable water -resistant interstices have the maximum cross section size, the maximum cross section size is 0.1mm~5mm, and the breathable water -resistant interstice is used for connecting the air inlet and the air outlet.
[0009] In some embodiments, the outer peripheral wall of the mounting body is provided with a plurality of protrusions, the plurality of protrusions are arranged at intervals on the outer peripheral wall of the mounting body, the breathable water -resistant interstice is located between any two adjacent protrusions, and the protrusion is used for abutting tightly with the hole wall of the channel.
[0010] In some embodiments, the mounting body has an extending direction, each of the plurality of protrusions is arranged along the extending direction so that the air-permeable water-blocking pores extend along the extending direction.
[0011] In some embodiments, the air-permeable water-blocking pores have an extending length along the extending direction of h1, and the cover body has a thickness along the extending direction of h2, wherein h1≧2*h2.
[0012] In some embodiments, the hole has a first hole and a second hole, the cover body has an inner surface and an outer surface facing away from each other, the first hole is arranged close to the outer surface, and the second hole is arranged close to the inner surface, an inner wall of the hole forms a limiting portion and a protruding portion, the limiting portion is arranged around an axial direction of the first hole, the limiting portion defines the air outlet, the protruding portion is protruded on one side of the limiting portion located at the second hole, the air-permeable water-blocking pores are formed between the mounting body and inner walls of the first hole and the second hole, the mounting body is mounted in the hole via the air inlet, when the mounting body is mounted in the hole, the mounting body abuts against the protruding portion so that a gap is formed between the mounting body and the protruding portion, and the gap is communicated with the air-permeable water-blocking pores located at the first hole and the air-permeable water-blocking pores located at the second hole.
[0013] In some embodiments, the protruding portion has a plurality of protruding portions, and the plurality of protruding portions are arranged at intervals around the axial direction of the first hole.
[0014] In some embodiments, the limiting portion, the protruding portion, and the cover body are integrally formed.
[0015] In some embodiments, the hole has a first hole diameter at the air inlet and a second hole diameter at the air outlet, the first hole diameter is greater than the second hole diameter, and the mounting body is mounted in the hole via the air inlet; and / or,
[0016] The cover body includes a cover plate and an extending body protruded on one side of the cover plate, and the hole penetrates through the cover plate and the extending body.
[0017] In some embodiments, the cover body includes a cover plate and an extending body, the cover body further includes a ring body arranged around an outer periphery of the extending body and adjacent to an edge of the cover plate, the ring body is fixed to the cover plate, a receiving cavity is formed between the ring body and the extending body, the receiving cavity is communicated with the air inlet, an outer periphery of the ring body is provided with an anti-disengagement portion, and the anti-disengagement portion is a flexible structure.
[0018] The utility model discloses an embodiment further provides a coffee machine, its characterized in that, including: the breathable water -resisting cover and main part of above-mentioned, the breathable water -resisting cover is used to cover the liquid cavity of main part, the breathable water -resisting aperture is used for connecting the liquid cavity and outside.
[0019] The breathable water -resisting cover and the coffee machine provided by the utility model embodiment, by being provided with the hole channel in the cover main body, the hole channel penetrates the cover main body, when the installing body is installed in the hole channel, a plurality of breathable water -resisting apertures are formed between the outer peripheral wall of the installing body and the inner wall of the hole channel, the plurality of breathable water -resisting apertures have the maximum cross section size, and the value range of the maximum cross section size is 0.1mm~5mm, by setting the value range of the maximum cross section size of the breathable water -resisting aperture to 0.1mm~5mm, these aperture sizes make that the breathable water -resisting aperture will not be too big, because the water vapor molecule diameter is about 0.0004um, and it is far less than the minimum aperture 0.1mm of the breathable water -resisting aperture, so that the breathable water -resisting aperture can hinder the water in the liquid cavity in the main body, and the minimum aperture of the breathable water -resisting aperture is greater than the size of water vapor, so that it is beneficial to the discharge of water vapor, for example, the hot liquid in the coffee machine does not easily flow out from the breathable water -resisting aperture, and when the user holds the coffee machine to extract, the coffee machine can be inclined, and the possibility of scalding the user by the coffee liquid flowing out is reduced or avoided.The breathable water -resisting cover provided by the utility model embodiment can exhaust and not easily leak water.Thus, a one-way valve does not need to be arranged on the breathable water -resisting cover, and only the breathable water -resisting aperture needs to be arranged, so that the breathable water -resisting cover is simple in structure, simple in production process, and low in cost, and the user can use it safely. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 The structure schematic diagram of the coffee machine provided by the utility model embodiment is shown.
[0021] Figure 2 The cross section schematic diagram of the breathable water -resisting cover in the coffee machine of Figure 1 is shown.
[0022] Figure 3 The longitudinal cross section schematic diagram of the breathable water -resisting cover in Figure 2 is shown.
[0023] Figure 4 The partial enlarged schematic diagram of A in Figure 3 is shown. DETAILED DESCRIPTION
[0024] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the present application.
[0025] The technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.
[0026] Please refer to Figures 1 to 4 The present application provides a coffee machine 10, which comprises a breathable water-blocking cover 11 and a main body 12. The breathable water-blocking cover 11 is used to cover the liquid cavity of the main body 111, and the breathable water-blocking aperture 113 is used to communicate the liquid cavity and the outside. The main body 12 can be the main body of the coffee machine.
[0027] The breathable water-blocking cover 11 is used to be detachably mounted on the main body 12, and the breathable water-blocking cover 11 is used to cover the liquid cavity (not shown in the figure) of the main body 111. The breathable water-blocking cover 11 comprises a cover main body 111 and a mounting body 112.
[0028] The cover main body 111 is provided with a hole channel 1111, which penetrates through the cover main body 111. The hole channel 1111 has an air inlet 1113 and an air outlet 1114 which are in communication with each other. The air outlet 1114 is used to communicate with the outside. The mounting body 112 is detachably mounted in the hole channel 1111. When the mounting body 112 is mounted in the hole channel 1111, a plurality of breathable water-blocking apertures 113 are formed between the outer peripheral wall of the mounting body 112 and the inner wall of the hole channel 1111. The plurality of breathable water-blocking apertures 113 have a maximum cross-sectional dimension, and the value of the maximum cross-sectional dimension ranges from 0.1 mm to 5 mm. The breathable water-blocking apertures 113 are used to communicate the air inlet 1113 and the air outlet 1114, so that the breathable water-blocking apertures 113 communicate the liquid cavity and the outside.
[0029] It should be noted that the "maximum cross-sectional dimension" can refer to the size of the maximum dimension of the air-permeable and water-blocking aperture 113 in the cross section perpendicular to the thickness direction of the cover body 111. The "water blocking" refers to the air-permeable and water-blocking aperture 113 as much as possible to hinder the liquid in the liquid cavity of the main body 12 from flowing out of the air-permeable and water-blocking cover 11. It can be understood that when the user uses it, the liquid in the liquid cavity of the main body 12 can be close to the air-permeable and water-blocking aperture 113. Due to the small maximum cross-sectional dimension of the air-permeable and water-blocking aperture 113, the liquid needs to overcome a large resistance when the liquid enters the air-permeable and water-blocking aperture 113. In combination with the surface tension of the liquid, the liquid is not easy to flow out of the air-permeable and water-blocking aperture 113, so that the user can be scalded as much as possible or avoided by the hot liquid flowing out of the air-permeable and water-blocking cover 11.
[0030] By providing the hole channel 1111 on the cover body 111, the hole channel 1111 penetrates through the cover body 111, and when the mounting body 112 is mounted in the hole channel 1111, a plurality of air-permeable and water-blocking apertures 113 are formed between the outer peripheral wall of the mounting body 112 and the inner wall of the hole channel 1111. The plurality of air-permeable and water-blocking apertures 113 have a maximum cross-sectional dimension, and the maximum cross-sectional dimension has a value range of 0.1mm-5mm, for example, which can be 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1mm, 2mm, 3mm, 4mm or 5mm. By setting the value range of the maximum cross-sectional dimension of the air-permeable and water-blocking aperture 113 to 0.1mm-5mm, the pore size is not too large, because the diameter of water vapor molecules is about 0.0004um, which is much smaller than the minimum pore size 0.1mm of the waterproof and air-permeable film. In this way, the air-permeable and water-blocking aperture 113 will hinder the water in the liquid cavity in the main body 12, and the minimum pore size of the air-permeable and water-blocking aperture 113 is greater than the size of the water vapor, which is beneficial to the discharge of water vapor. For example, the hot liquid in the coffee machine is not easy to flow out of the air-permeable and water-blocking aperture 113. When the user holds the coffee machine for extraction, the coffee machine can be inclined. The air-permeable and water-blocking cover 11 provided by the embodiment of the present application can not only exhaust but also not easy to leak water. In this way, a one-way valve does not need to be arranged on the air-permeable and water-blocking cover 11, and only the air-permeable and water-blocking aperture 113 needs to be arranged, so that the air-permeable and water-blocking cover 11 has a simple structure, a simple production process, and can effectively reduce the cost.
[0031] In some embodiments, the outer circumferential wall of the mounting body 112 is provided with a plurality of protrusions 1121 which are arranged at intervals on the outer circumferential wall of the mounting body 112, and the water-resisting and air-permitting apertures 113 are located between any two adjacent protrusions 1121, and the protrusions 1121 are used to abut against the hole wall of the hole 1111. As an example, the plurality of protrusions 1121 can be arranged at equal intervals or non-equal intervals around the outer circumferential wall of the mounting body 112, and the protrusions 1121 can be seen as peaks, and the valleys between two protrusions 1121 can be seen as the water-resisting and air-permitting apertures 113. By arranging the plurality of protrusions 1121, the protrusions 1121 can form an interference fit with the hole 1111 of the cover body 111, so that the mounting body 112 is not easy to fall off from the cover body 111. Since the mounting body 112 is detachably arranged on the cover body 111, it is convenient to process the plurality of protrusions 1121 on the mounting body 112, and the arrangement mode of the plurality of protrusions 1121 can be arranged in a zigzag shape.
[0032] In some embodiments, the mounting body 112 has an extension direction X, and each of the plurality of protrusions 1121 is arranged along the extension direction X, so that the water-resisting and air-permitting apertures 113 extend along the extension direction X. It should be noted that the extension direction X of the mounting body 112 can be the length direction of the mounting body 112, and when the mounting body 112 is mounted on the water-resisting and air-permitting cover 11, the extension direction X can be consistent with the thickness of the water-resisting and air-permitting cover 11. As an example, the protrusions 1121 can be arranged in a straight line along the extension direction X of the mounting body 112, so as to facilitate the processing of the protrusions 1121, and make the extension direction of the water-resisting and air-permitting apertures 113 relatively straight, so as to facilitate the discharge of water vapor, timely relieve the pressure of the liquid cavity of the main body 12, and not easy to push open the cover body 111.
[0033] In some embodiments, the water-resisting and air-permitting apertures 113 have an extension length h1 along the extension direction X, and the cover body 111 has a thickness h2 along the extension direction X, and h1≧2*h2. As an example, h1 of the water-resisting and air-permitting apertures 113 can be equal to 2*h2, and as another example, h1 of the water-resisting and air-permitting apertures 113 can be equal to 3*h2, and h2 can be 1 cm or 2 cm or 3 cm, etc.
[0034] In some embodiments, as shown in FIG. 1, the water-resisting and air-permitting cover 11 is arranged on the main body 12, and the water-resisting and air-permitting cover 11 is arranged on the main body 12 in a detachable manner. Figure 2 and Figure 4As shown, the hole 1111 has a first hole 1115 and a second hole 1116, the cover body 111 has an inner surface 1118 and an outer surface 1117 facing away from each other, the first hole 1115 is arranged close to the outer surface 1117, and the second hole 1116 is arranged close to the inner surface 1118. The inner wall of the hole 1111 forms a limiting portion 1123 and a protruding portion 1122. The limiting portion 1123 is arranged around the axis of the first hole 1115, and the limiting portion 1123 defines the air inlet 1114. As an example, the limiting portion 1123 can have a substantially annular structure. The protruding portion 1122 is arranged on one side of the limiting portion 1123 located at the second hole 1116. The water-resistant air-permeable gap 113 is formed between the mounting body 112 and the inner walls of the first hole 1115 and the second hole 1116. The mounting body 112 is mounted in the hole 1111 via the air inlet 1113. When the mounting body 112 is mounted in the hole 1111, the mounting body 112 abuts against the protruding portion 1122, so that a gap 1124 is formed between the mounting body 112 and the protruding portion 1122. The gap 1124 communicates with the water-resistant air-permeable gap 113 located at the first hole 1115 and the water-resistant air-permeable gap 113 located at the second hole 1116. The water vapor in the liquid cavity of the main body 12 can be discharged from the air inlet 1113, the water-resistant air-permeable gap 113 located at the first hole 1115, the gap 1124, the water-resistant air-permeable gap 113 located at the second hole 1116, and the air outlet 1114. The gap 1124 forms a turning point. Specifically, for water resistance, the water flow needs to penetrate the water-resistant air-permeable gap 113 located at the first hole 1115, then pass through the gap 1124 formed between the mounting body 112 and the protruding portion 1122, and then pass through the water-resistant air-permeable gap 113 located at the second hole 1116. The water-resistant air-permeable gap 113 located at the first hole 1115, the gap 1124 formed between the mounting body 112 and the protruding portion 1122, and the water-resistant air-permeable gap 113 located at the second hole 1116 form an L-shaped flow channel. The L-shaped flow channel can be regarded as a creeping hole, which can hinder the discharge of liquid. In addition, due to the small gap of the water-resistant air-permeable gap 113, the liquid tension causes the effect of "blocking" the gap. Here, the water-resistant air-permeable gap 113 is designed in the form of a chimney, which prolongs the path of the water flow, so that the pressure of the liquid in the main body 12 needs to be a certain value to "press out" the water. In this way, the liquid is not easy to flow out, and the water resistance effect is achieved.
[0035] In some embodiments, the number of protruding portions 1122 is multiple, and the multiple protruding portions 1122 are arranged at intervals around the axis of the first hole 1115. By arranging multiple protruding portions 1122, the mounting body 112 can be stably supported. In addition, adjacent two of the multiple protruding portions 1122 are arranged at intervals, so that the water vapor can be quickly discharged from the intervals to the air inlet 1114, and the pressure relief is facilitated.
[0036] In some embodiments, the limiting portion 1123, the protruding portion 1122 and the cover body 111 are integrally formed. The three can be integrally formed by injection molding, which facilitates processing and effectively improves the structural strength.
[0037] In some embodiments, the hole 1111 has a first hole diameter at the gas inlet 1114 and a second hole diameter at the gas outlet 1113, the first hole diameter being larger than the second hole diameter, so that the mounting body 112 is mounted in the hole 1111 through the gas inlet 1113. As an example, by designing the hole diameter of the gas inlet 1113 to be larger, more water vapor enters, facilitating the discharge of steam. In addition, the hole diameter of the gas inlet 1113 can be inverted conical, which facilitates the guidance of the mounting body 112 and facilitates quick assembly. And / or,
[0038] The cover body 111 includes a cover plate 1131 and an extension body 1134 protruding from one side of the cover plate 1131, and the hole 1111 penetrates through the cover plate 1131 and the extension body 1134. The extension body 1134 can be disposed substantially at the middle of the cover plate 1131. By providing the extension body 1134, the length of the hole 1111 is increased, which reduces the possibility of liquid discharge, and the overall thickness of the cover plate 1131 does not need to be increased, which facilitates light and thin design.
[0039] In some embodiments, the cover body 111 further includes a ring body 1132 disposed around the outer periphery of the extension body 1134, and the ring body 1132 is disposed adjacent to the edge of the cover plate 1131, the ring body 1132 is fixed to the cover plate 1131, and a receiving cavity 1135 is formed between the cover plate 1132 and the extension body 1134, the receiving cavity 1135 is in communication with the gas inlet 1113, and the outer periphery of the cover plate 1132 is provided with an anti-disengagement portion 1133, which is a flexible structure. The flexible structure can be made of rubber or silicone. By providing the cover plate 1132, the receiving cavity 1135 is formed between the cover plate 1132 and the extension body 1134, and the receiving cavity 1135 is in communication with the gas inlet 1113, which facilitates increasing the volume of the coffee machine 10 for accommodating steam. This space can accommodate more steam, facilitating the rapid discharge of steam from the gas inlet 1114. In addition, the ring body 1132 can be embedded in the liquid cavity of the main body 12, and the anti-disengagement portion 1133 is provided on the outer periphery of the ring body 1132, which facilitates increasing the covering effect of the cover body 111, so that the cover body 111 is not easily disengaged.
[0040] The breathable water-blocking cover 11 and the coffee machine 10 provided by the utility model implement have the channel 1111 arranged on the cover main body 111, the channel 1111 penetrates the cover main body 111, when the mounting body 112 is mounted in the channel 1111, the plurality of breathable water-blocking apertures 113 are formed between the outer peripheral wall of the mounting body 112 and the inner wall of the channel 1111, the plurality of breathable water-blocking apertures 113 have the maximum cross section size, the value range of the maximum cross section size is 0.1mm-5mm, the value range of the maximum cross section size of the breathable water-blocking aperture 113 is set to 0.1mm-5mm, the aperture size makes the breathable water-blocking aperture 113 not too small and too large, because the water vapor molecule diameter is about 0.0004um, which is much smaller than the minimum aperture 0.1mm of the breathable water-blocking aperture 113, so that the breathable water-blocking aperture 113 can hinder the water in the liquid cavity in the main body 12, because the minimum aperture of the breathable water-blocking aperture 113 is larger than the size of the water vapor, so that the water vapor is discharged, because the maximum aperture of the breathable water-blocking aperture 113 is not too large, so that the hot liquid in the coffee machine is not easy to flow out of the breathable water-blocking aperture 113, when the user holds the coffee machine to extract, the coffee machine can be inclined, and the possibility of liquid flowing out to scald the user is reduced or avoided. Therefore, the breathable water-blocking cover 11 provided by the utility model implement can discharge air and is not easy to leak water, so that a one-way valve does not need to be arranged on the breathable water-blocking cover 11, only the breathable water-blocking aperture 113 needs to be arranged, so that the breathable water-blocking cover 11 has simple structure, simple production process, can effectively reduce the cost and is convenient for the user to use safely.
[0041] In the utility model, unless another definite provision or limitation, the terms "mounting", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be direct connection, can also be indirectly connected through intermediate medium, can be internal communication of two elements, can be only surface contact, or surface contact connection through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0042] In addition, the terms "first", "second", and the like are used only to distinguish descriptions, and cannot be understood as specifically or particularly indicating or specifying structures. The description of the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0043] The above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.
Claims
1. A breathable and water-resistant cover, characterized in that, The breathable and water-blocking cover is detachably installed on the main body, and is used to cover the liquid cavity of the main body. The breathable and water-blocking cover includes: The cover body has a channel that penetrates the cover body. The channel has an air inlet and an air outlet that are interconnected. The air outlet is used to communicate with the outside world. The mounting body is detachably installed in the channel. When the mounting body is installed in the channel, a plurality of air-permeable and water-blocking pores are formed between the outer peripheral wall of the mounting body and the inner wall of the channel. The plurality of air-permeable and water-blocking pores have a maximum cross-sectional size, the maximum cross-sectional size being in the range of 0.1mm to 5mm. The air-permeable and water-blocking pores are used to connect the air inlet and the air outlet.
2. The breathable and water-resistant cover according to claim 1, characterized in that, The outer peripheral wall of the mounting body is provided with a plurality of protrusions, which are spaced apart on the outer peripheral wall of the mounting body. The air-permeable and water-blocking pores are located between any two adjacent protrusions, and the protrusions are used to abut against the wall of the pore.
3. The breathable and water-resistant cover according to claim 2, characterized in that, The mounting body has an extending direction, and each of the plurality of protrusions extends along the extending direction so that the air-permeable and water-blocking pores extend along the extending direction.
4. The breathable and water-resistant cover according to claim 3, characterized in that, The breathable and water-blocking pores have an extension length of h1 along the extension direction, and the cover body has a thickness of h2 along the extension direction, wherein h1 ≥ 2 * h2.
5. The breathable and water-resistant cover according to claim 1, characterized in that, The channel has a first hole and a second hole. The cover body has an inner surface and an outer surface that are opposite to each other. The first hole is located near the outer surface, and the second hole is located near the inner surface. The inner wall of the channel forms a limiting part and a protrusion. The limiting part is axially arranged around the first hole and defines the air inlet. The protrusion protrudes from the limiting part on one side of the second hole. The air-permeable and water-blocking pores are formed between the mounting body and the inner wall of the first hole and the inner wall of the second hole. The mounting body is installed in the channel through the air inlet. When the mounting body is installed in the channel, the mounting body abuts against the protrusion, so that a gap is formed between the mounting body and the protrusion. The gap connects the air-permeable and water-blocking pores located in the first hole and the air-permeable and water-blocking pores located in the second hole.
6. The breathable and water-resistant cover according to claim 5, characterized in that, The number of protrusions is multiple, and the multiple protrusions are arranged at intervals around the axis of the first hole.
7. The breathable and water-resistant cover according to claim 5, characterized in that, The limiting part, the protrusion, and the cover body are integrally formed.
8. The breathable and water-resistant cover according to any one of claims 1 to 7, characterized in that, The channel has a first diameter at the air inlet and a second diameter at the air outlet, the first diameter being larger than the second diameter, so that the mounting body is installed in the channel via the air inlet; and / or The cover body includes a cover plate and an extension body. The extension body protrudes from one side of the cover plate, and the channel passes through the cover plate and the extension body.
9. The breathable and water-resistant cover according to claim 8, characterized in that, The cover body includes a cover plate and an extension body. The cover body also includes a ring body. The ring body is arranged around the outer periphery of the extension body and is located adjacent to the edge of the cover plate. The ring body is fixed to the cover plate. A receiving cavity is formed between the ring body and the extension body. The receiving cavity is connected to the air inlet. An anti-detachment part is provided on the outer periphery of the ring body. The anti-detachment part is a flexible structure.
10. A coffee machine, characterized in that, include: The breathable and water-blocking cover and the main body as described in any one of claims 1 to 9, wherein the breathable and water-blocking cover is used to cover the liquid cavity of the main body, and the breathable and water-blocking pores are used to connect the liquid cavity to the outside.