A one-way valve

Abstract

The utility model discloses a check valve, including the connecting pipe, the valve seat, the stop component and the float, the valve seat the stop component with the float all are arranged in the connecting pipe, the valve seat is installed in the connecting pipe, the stop component includes end plate part and at least two's branch leg part, and each branch leg part is located the normal side of end plate part, the branch leg part with the valve seat is connected, and the branch leg part has the stop step surface, and the stop step surface is toward the valve seat, the float is located the inboard of each branch leg part, and the float is located between the stop step surface and the valve seat, and the float is configured to be able to and the stop step surface carry out the close stop. The check valve can reduce the noise.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration control technology, specifically to a one-way valve. Background Technology

[0002] A one-way valve, such as a float-type one-way valve, includes a connecting pipe, a valve seat, a stop component, and a float. The valve seat is mounted on the connecting pipe and has a valve port passage. The stop component is mounted on the valve seat, and the float can move between the valve seat and the stop component to open or close the valve port passage. In related technologies, the design of the stop component is not reasonable, causing the float to wobble significantly, which in turn causes noise.

[0003] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects remains a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a one-way valve that can reduce noise.

[0005] To solve the above-mentioned technical problems, this utility model provides a one-way valve, including a connecting pipe, a valve seat, a stop component, and a float; the valve seat, the stop component, and the float are all disposed within the connecting pipe, the valve seat is installed in the connecting pipe, the stop component includes an end plate portion and at least two support legs, each of the support legs being located on the normal side of the end plate portion; the support legs are connected to the valve seat, the support legs have a stop step surface, the stop step surface faces the valve seat, the float is located inside each of the support legs, and the float is located between the stop step surface and the valve seat, the float being configured to fit and stop against the stop step surface.

[0006] In this embodiment of the invention, the support leg is provided with a stop step surface, which is used to engage and stop the float. This allows for surface contact positioning between the float and the stop step surface, resulting in a relatively large contact area. This improves the float's positioning reliability, reduces the likelihood of tilting or colliding due to fluid impact, and consequently reduces noise, thus enhancing the user experience.

[0007] Furthermore, even if the float tilts, it is unlikely to exceed the plane containing the stop step due to the limiting stop surface; in other words, the tilt amplitude of the float can be relatively small. Thus, when the float needs to seal the valve seat, the displacement stroke on one side of the float is relatively small, correspondingly reducing the impact force between the float and the valve seat. This also reduces localized abnormal wear on the sealing surface, helping to ensure the sealing performance of the check valve during long-term use and extending its service life. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a check valve when the float and the folding plate are in contact in the related technology;

[0009] Figure 2 This is a schematic diagram of the structure of a check valve when the float deflects in a related technology.

[0010] Figure 3 A cross-sectional view of the one-way valve provided in the embodiment of this utility model;

[0011] Figure 4 for Figure 3 A partial enlarged view of the connection between the central pipe, valve seat, stop component and float;

[0012] Figure 5 This is a cross-sectional view of the valve seat;

[0013] Figure 6 A structural schematic diagram of the stop component;

[0014] Figure 7 A schematic diagram of the structure when the stop component and the float are in contact.

[0015] Figure 1 and Figure 2 The annotations in the accompanying drawings are explained as follows:

[0016] 2000′ valve seat;

[0017] 3000′ Stop component; 3100′ End plate part; 3110′ Folding plate part;

[0018] 4000′ float.

[0019] Figures 3-7 The annotations in the accompanying drawings are explained as follows:

[0020] 1000 connecting pipe; 1100 inner convex part;

[0021] 2000 Valve seat; 2100 Valve port passage; 2200 Sealing surface; 2300 Slot; 2400 Abutment surface section; 2500 Mounting groove;

[0022] 3000 Stop component; 3100 End plate; 3110 Weight reduction hole; 3200 Support leg; 3210 First section; 3211 Stop step surface; 3220 Second section; 3221 Hook; 3221A Engaging surface; 3222 Rib; 3222A First rib section; 3222B Second rib section; 3230 Third section;

[0023] 4000 floats. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In the description of the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0026] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0027] The directional terms mentioned in the embodiments of this application, such as "inner" and "outer", are only for reference to the direction of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0028] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0029] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a check valve when the float and the folding plate are in contact in the related technology; Figure 2 This is a schematic diagram of the structure of a check valve when the float deflects in a related technology.

[0030] like Figure 1 and Figure 2 As shown, in related technologies, a one-way valve includes a valve seat 2000', a stop component 3000', and a float 4000'.

[0031] A stop component 3000' is mounted on a valve seat 2000', and a float 4000' is disposed between the valve seat 2000' and the stop component 3000'. The stop component 3000' includes an end plate portion 3100', a portion of which can be folded toward the valve seat 2000' to form a folding plate portion 3110', which is used to stop and limit the float 4000'.

[0032] In this implementation, the contact surface between the folding plate 3110' and the float 4000' is relatively small, and it cannot reliably abut against the float 4000'. Affected by fluid impacts, the float 4000' is prone to tilting and collisions (e.g., ...). Figure 2 As shown in the image, this could potentially cause additional noise, severely impacting the user experience. Furthermore, as... Figure 2 As shown, due to the limited stopping and limiting effect of the folding plate portion 3110′, once the float 4000′ tilts, its tilt amplitude is very large, often exceeding the surface P where the lower edge of the folding plate portion 3110′ is located; thus, when the float 4000′ needs to block the valve seat 2000′, one side of the float 4000′ ( Figure 2 The displacement stroke of the right side of the valve is also relatively large. Consequently, the impact force between the float 4000′ and the valve seat 2000′ will also be large, which can easily cause local abnormal wear on the sealing surface of the valve seat 2000′, thereby affecting the sealing performance of the check valve and shortening its service life.

[0033] To address this issue, this utility model provides a one-way valve, please refer to the following embodiment. Figures 3-7 , Figure 3 A cross-sectional view of the one-way valve provided in the embodiment of this utility model; Figure 4 for Figure 3 A partial enlarged view of the connection between the central pipe, valve seat, stop component and float; Figure 5 This is a cross-sectional view of the valve seat; Figure 6 A structural schematic diagram of the stop component; Figure 7 A schematic diagram of the structure when the stop component and the float are in contact.

[0034] like Figure 3 and Figure 4 As shown, this utility model embodiment provides a one-way valve, which can be applied to dual-temperature dual-control household refrigerators and similar refrigeration and heat exchange scenarios. It includes a pipe 1000, a valve seat 2000, a stop component 3000, and a float 4000. The valve seat 2000, the stop component 3000, and the float 4000 are all disposed within the pipe 1000.

[0035] Valve seat 2000 is installed on pipe 1000. See details below. Figure 4 and Figure 5The outer wall surface of the valve seat 2000 can be provided with a mounting groove 2500, and the inner wall surface of the pipe 1000 can be provided with an inner protrusion 1100. The inner protrusion 1100 can be fitted into the mounting groove 2500, thereby realizing the snap-fit ​​fixing of the valve seat 2000 and the pipe 1000, so that the valve seat 2000 and the pipe 1000 can be limited to a connection. Specifically, the inner protrusion 1100 can be formed by internal pressure on the pipe 1000.

[0036] It is understood that in some other implementations of this utility model, the valve seat 2000 and the connecting pipe 1000 can also be installed and fixed using other connection methods, as long as the relevant requirements such as the reliability of the connection are met. For example, the valve seat 2000 and the connecting pipe 1000 can also be connected by welding or other methods.

[0037] The valve seat 2000 also has a valve port passage 2100, which is used to allow fluid to flow inside the valve seat 2000. A sealing surface 2200 may be formed at one axial end of the valve seat 2000, which is used to abut against the float 4000 so as to block the valve port passage 2100 under the action of the float 4000.

[0038] The stop member 3000 includes an end plate portion 3100 and at least two support legs 3200, each support leg 3200 being located on the normal side of the end plate portion 3100. Each support leg 3200 may extend from the end plate portion 3100.

[0039] The outrigger 3200 is connected to the valve seat 2000, and can position the relative position of the stop member 3000 and the valve seat 2000. The outrigger 3200 has a stop step surface 3211, which faces the valve seat 2000. The float 4000 is located inside each outrigger 3200, and is located between the stop step surface 3211 and the valve seat 2000. In the open valve state, the float 4000 is configured to engage and stop with the stop step surface 3211.

[0040] Using the above solution, this embodiment of the invention selects to provide a stop step surface 3211 on the support leg 3200, and uses this stop step surface 3211 to fit and stop the float 4000. In this way, the float 4000 and the stop step surface 3211 are positioned by surface contact. The contact area between the float 4000 and the stop step surface 3211 can be relatively large, which can improve the positioning reliability of the float 4000, reduce the possibility of the float 4000 tilting and colliding due to fluid impact, and thus reduce noise, which is beneficial to improving the user experience.

[0041] And, as Figure 7As shown, even if the float 4000 tilts, due to the stop limit of the stop step surface 3211, the float 4000 is unlikely to exceed the plane P where the stop step surface 3211 is located; that is, the tilt amplitude of the float 4000 can be relatively small. Thus, when the float 4000 needs to block the valve seat 2000, the float 4000 can only tilt on one side (…). Figure 7 The displacement stroke of the right side of the valve is also relatively small. Correspondingly, the impact force between the float 4000 and the valve seat 2000 will also be smaller, which can also reduce the local abnormal wear of the sealing surface 2200. This is beneficial to ensuring the sealing performance of the check valve during long-term use, and thus can extend the service life of the check valve.

[0042] In some implementations, the outrigger 3200 may include a first segment 3210 and a second segment 3220 connected together.

[0043] The first segment 3210 and the second segment 3220 can be set at an angle, such as 90 degrees. (See reference...) Figure 7 Regarding the orientation and positional relationship, the first segment 3210 can generally extend horizontally, and the second segment 3220 can generally extend vertically. The first segment 3210 may have the aforementioned stop step surface 3211. The second segment 3220 can be used to connect with the valve seat 2000. Specifically, the float 4000 can be disposed inside the second segment 3220. The second segment 3220 can limit the radial position of the float 4000, and at the same time, the second segment 3220 can also guide the axial displacement of the float 4000.

[0044] Furthermore, the outrigger 3200 may also include a third segment 3230. The third segment 3230 and the second segment 3220 may be located on either side of the first segment 3210. The third segment 3230 can connect the first segment 3210 and the end plate 3100. The third segment 3230 and the first segment 3210 may also be arranged at an angle, such as 90 degrees.

[0045] In this embodiment, the support leg 3200, including the first segment 3210, the second segment 3220, and the third segment 3230, can be formed by stamping. In this way, by using a pre-set stamping die, stamping can be performed at the same position on each support leg 3200, ensuring that the first segment 3210 of each support leg 3200 is substantially at the same axial position, and that the stop step surface 3211 of each first segment 3210 is substantially on the same surface P, thereby achieving a more stable stop and limit on the float 4000.

[0046] In some implementations, a hook 3221 may be provided at one end of the second segment 3220 away from the end plate portion 3100, and a slot 2300 may be provided on the valve seat 2000. The hook 3221 can be engaged in the slot 2300, thereby realizing the connection between the stop component 3000 and the valve seat 2000.

[0047] Specifically, such as Figure 4 and Figure 5 As shown, the outer wall surface of the valve seat 2000 may include an abutment surface section 2400, which may be located on the side of the slot 2300 facing the stop step surface 3211. Furthermore, the abutment surface section 2400 may be tapered along the direction close to the stop step surface 3211, and the hook 3221 may have an engagement surface 3221A, which may be angled with the axial direction of the one-way valve. With this configuration, neither the abutment surface section 2400 nor the engagement surface 3221A is planar. When the engagement surface 3221A is in contact with the abutment surface section 2400, the tightness of the fit can be higher, which can better ensure the reliability of the axial connection between the stop component 3000 and the valve seat 2000, effectively preventing the possibility of axial wobbling of the stop component 3000 relative to the valve seat 2000.

[0048] In some implementations, such as Figure 4 and Figure 7 As shown, the side of the second segment 3220 facing the valve seat 2000 can also be provided with a rib 3222. Specifically, the second segment 3220 can abut against the valve seat 2000 through the rib 3222. This is more conducive to ensuring reliable abutment between the support leg 3200 and the valve seat 2000.

[0049] Specifically, the aforementioned rib 3222 can be formed by thickening a local area of ​​the second segment 3220. In this case, the thickness of the second segment 3220 in the area where the rib 3222 is located can be greater than the thickness of other areas. The outer wall surface of the second segment 3220 in the area where the rib 3222 is located can be basically flush with the outer wall surfaces of other areas. The inner wall surface of the second segment 3220 in the area where the rib 3222 is located can protrude towards the inner side of the second segment 3220 relative to the inner wall surfaces of other areas.

[0050] Alternatively, the aforementioned rib 3222 can be formed by inward compression of a local segment of the second section 3220. In this case, the thickness of the second section 3220 in the area where the rib 3222 is located can be basically the same as the thickness in other areas. The outer wall surface of the second section 3220 in the area where the rib 3222 is located is concave relative to the outer wall surfaces of other areas, and the inner wall surface of the second section 3220 in the area where the rib 3222 is located protrudes towards the inner side of the second section 3220 relative to the inner wall surfaces of other areas. Furthermore, as... Figure 6As shown, the area where internal pressure is applied to form the rib 3222 is usually located in the middle part of the second section 3220. This part is not easily affected by the processing technology and will not form burrs or rough edges, that is, it can be relatively flat. Correspondingly, the surface of the rib 3222 formed by internal pressure on this part can be relatively smooth, which can reduce the scratches on the valve seat 2000 during the installation of the second section 3220 onto the valve seat 2000. This is beneficial to ensuring the dimensional accuracy of the valve seat 2000 and the assembly accuracy of the stop component 3000 and the valve seat 2000.

[0051] Specifically, the rib 3222 can extend along the axial direction of the check valve. (Combined with...) Figure 4 The protruding rib 3222 may include a first rib segment 3222A and a second rib segment 3222B.

[0052] The first rib segment 3222A can offset the valve seat 2000.

[0053] The second rib section 3222B can be located on one side of the valve seat 2000. Specifically, the float 4000 can be located between the second rib sections 3222B of each second section 3220 and guided by the second rib sections 3222B. With this configuration, the contact area between the float 4000 and the second section 3220 can be relatively small, which can reduce the sliding resistance when the float 4000 moves along the axial direction of the check valve and reduce wear on the float 4000.

[0054] In addition, regarding the aforementioned scheme where the rib 3222 is formed by internal pressure, since the surface of the rib 3222 is relatively smooth, the sliding resistance of the float 4000 when it comes into contact with the rib 3222 can be smaller, which is also more conducive to protecting the float 4000.

[0055] In some implementations, the end plate portion 3100 is also provided with a weight reduction hole 3110 to reduce the weight of the stop component 3000 and reduce the material consumption of the stop component 3000, thereby reducing costs.

[0056] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A one-way valve, characterized in that, The device includes a connecting pipe (1000), a valve seat (2000), a stop component (3000), and a float (4000); the valve seat (2000), the stop component (3000), and the float (4000) are all disposed within the connecting pipe (1000), the valve seat (2000) is installed in the connecting pipe (1000), and the stop component (3000) includes an end plate portion (3100) and at least two support legs (3200), each of the support legs (3200) being located on the normal side of the end plate portion (3100); The support leg (3200) is connected to the valve seat (2000). The support leg (3200) has a stop step surface (3211) facing the valve seat (2000). The float (4000) is located inside each of the support legs (3200) and is located between the stop step surface (3211) and the valve seat (2000). The float (4000) is configured to fit and stop with the stop step surface (3211).

2. The one-way valve according to claim 1, characterized in that, The outrigger (3200) includes a first section (3210) and a second section (3220) connected to each other. The first section (3210) and the second section (3220) are arranged at an angle. The first section (3210) has the stop step surface (3211). The second section (3220) is connected to the valve seat (2000). The float (4000) is disposed on the inner side of the second section (3220).

3. The one-way valve according to claim 2, characterized in that, The outrigger (3200) further includes a third segment (3230), which connects the first segment (3210) and the end plate (3100), and the third segment (3230) and the first segment (3210) are arranged at an angle.

4. The one-way valve according to claim 3, characterized in that, The outrigger (3200) is formed by stamping.

5. The one-way valve according to claim 2, characterized in that, The second segment (3220) is provided with a hook (3221) at one end away from the end plate (3100), and the valve seat (2000) is provided with a groove (2300), and the hook (3221) is engaged in the groove (2300).

6. The one-way valve according to claim 5, characterized in that, The outer wall of the valve seat (2000) includes an abutment section (2400), which is located on the side of the slot (2300) facing the stop step surface (3211) and is tapered along the direction close to the stop step surface (3211). The hook (3221) has an engagement surface (3221A), which is at an angle to the axial direction of the one-way valve.

7. The one-way valve according to claim 2, characterized in that, The second segment (3220) has a raised rib (3222) on the side facing the valve seat (2000), and the second segment (3220) abuts against the valve seat (2000) through the raised rib (3222).

8. The one-way valve according to claim 7, characterized in that, The rib (3222) includes a first rib segment (3222A) and a second rib segment (3222B). The first rib segment (3222A) abuts against the valve seat (2000). The second rib segment (3222B) is located on the side of the valve seat (2000) facing the second segment (3220). The float (4000) is located between each of the second rib segments (3222B).

9. The check valve according to any one of claims 1-8, characterized in that, The outer wall surface of the valve seat (2000) is provided with an installation groove (2500), and the inner wall surface of the connecting pipe (1000) is provided with an inner protrusion (1100), which is fitted into the installation groove (2500).

10. The check valve according to any one of claims 1-8, characterized in that, The end plate portion (3100) is provided with a weight reduction hole (3110).

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