CN215110702U

CN215110702U - Check valve and air conditioner with same

Info

Publication number: CN215110702U
Application number: CN202022828183.XU
Authority: CN
Inventors: 宣永斌; 赵剑波
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-12-10
Anticipated expiration: 2030-11-30

Abstract

The utility model relates to the technical field of valves, especially, relate to a check valve and have its air conditioner. The utility model provides a check valve, which comprises a valve body, a valve seat and a valve core, wherein the valve cavity is arranged in the valve body, the valve seat is provided with a valve port, the valve core is positioned in the valve cavity and can move in the valve cavity to open and close the valve port, and one end of the valve body, which is far away from the valve port, is provided with a necking section for limiting the valve core to be separated from the valve cavity along the axial direction of the valve body; at least one blocking piece is arranged on the inner wall of the neck reducing section, a limiting part is arranged on the valve core, and the limiting part can be matched with the blocking piece to limit the valve core to rotate around the axis of the valve body. The utility model also provides an air conditioner, it includes refrigeration piping and above-mentioned check valve. Compared with the prior art, the utility model has the advantages of: the inner wall of the necking section is provided with the blocking piece, so that the valve core is abutted against the blocking piece when moving to the necking section and cannot rotate, and noise is avoided.

Description

Check valve and air conditioner with same

Technical Field

The utility model relates to the technical field of valves, especially, relate to a check valve and have its air conditioner.

Background

A check valve is a valve that prevents a liquid from flowing backward by allowing the liquid to flow only in one direction and suppressing the liquid from flowing in the opposite direction, and is provided in a hydraulic circuit or a pipe of a refrigeration cycle.

The existing one-way valve realizes the switching function of the one-way valve by moving the valve core in the valve body, and the valve core can freely rotate in the valve body. During application, the valve core can rotate in the valve body due to internal fluid, and therefore noise is generated.

SUMMERY OF THE UTILITY MODEL

In view of this, to the above technical problem, the utility model provides a check valve that prevents noise production.

In order to solve the technical problem, the utility model provides a following technical scheme:

a check valve comprises a valve body, a valve seat and a valve core, wherein the valve cavity is formed in the valve body, the valve seat is provided with a valve port, the valve core is positioned in the valve cavity and can move in the valve cavity to open and close the valve port, and one end of the valve body, which is far away from the valve port, is provided with a necking section for limiting the valve core to be separated from the valve cavity along the axial direction of the valve body; the inner wall of the neck reducing section is provided with at least one blocking piece, the valve core is provided with a limiting part, and the limiting part can be matched with the blocking piece to limit the valve core to rotate around the axis of the valve body.

It can be understood that the present application avoids the generation of noise by providing the blocking member on the inner wall of the neck section, so that the valve core abuts against the blocking member and cannot rotate when moving to the neck section.

In one embodiment, the blocking member is a convex point or a convex strip protruding from the inner wall of the neck section.

It will be appreciated that this is more convenient to machine.

In one embodiment, the stop is integrally formed with the valve body.

It will be appreciated that by integrally forming the blocking member with the valve body, the overall manufacture of the valve body is facilitated.

In one embodiment, the valve core comprises a main body and a plurality of guide parts, the guide parts are arranged on the side wall of the main body and can be matched with the cavity wall of the valve cavity, one end of each guide part extends towards the blocking part and protrudes out of the main body, a flow channel is formed between every two adjacent limiting parts, and the limiting parts are arranged at one ends, close to the blocking part, of the guide parts.

It can be understood that the guide portion has a function of sliding guiding, so that the valve core slides up and down along the cavity wall of the valve cavity, and the valve core is convenient to move relatively in the valve body.

In one embodiment, the number of the blocking members is multiple, and one blocking member is arranged between two adjacent guiding portions.

It can be understood that the valve core is enabled to rotate to the position where the limit part abuts against the stop piece in the shortest path, so that the valve core stops rotating at the fastest speed, and the generation of noise is better prevented.

In one embodiment, the limiting part comprises a limiting section and an abutting section, and the limiting section is connected to the guide part and is used for matching with the neck section to limit the axial direction of the valve core to be separated from the valve cavity; the abutting section is arranged at one end, far away from the guiding part, of the limiting section, and the abutting section can abut against the blocking part to limit circumferential rotation of the valve core.

It can be understood that when the valve core moves towards the position of the neck section, the limiting section is abutted and jointed with the inner wall of the neck section, so that the valve core cannot move towards the position separated from the valve cavity; when the abutting section abuts against the blocking piece, the valve core is blocked from moving circumferentially, so that the valve core cannot rotate.

In one embodiment, the necking section comprises a first section and a second section, the first section is connected with the valve body, the second section is connected to one end, away from the valve body, of the first section, and the limiting part is arranged on the inner wall of the second section; the limiting section can move to the first section along with the valve core and is matched with the first section to limit the axial movement of the valve core; the abutting section extends into the second section from the first section along with the movement of the valve core and is matched with the stop piece.

In one embodiment, the second section is a tapered section, and the outer side surface of the abutting section is an inclined surface which can be attached to the inner wall of the second section.

It can be understood that the limiting function is enhanced, and the sealing function is also achieved.

In one embodiment, the valve seat is fixed within the valve cavity by riveting.

The utility model discloses still provide following technical scheme:

an air conditioner includes a refrigeration pipe and a check valve, wherein the refrigeration pipe is connected to the check valve.

Compared with the prior art, the utility model provides a check valve is through set up on the inner wall of necking down section block piece, thereby make the case move extremely during the necking down section with block piece and support and lean on and can't rotate to this production of avoiding the noise.

Drawings

Fig. 1 is a schematic structural view of a check valve provided by the present invention;

fig. 2 is a schematic view of a cross-sectional structure of the check valve provided by the present invention.

The symbols in the drawings represent the following meanings:

100. a one-way valve; 10. a valve body; 11. a first adapter tube; 12. a second adapter tube; 13. a valve cavity; 14. a valve seat; 141. a valve port; 142. a recess; 15. a necking section; 151. a blocking member; 152. a first stage; 153. a second stage; 16. riveting parts; 20. a valve core; 21. a limiting part; 211. a limiting section; 212. an abutting section; 212a, a bevel; 22. a main body; 23. a guide portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 2, the present invention provides a check valve 100, in which the check valve 100 is applied to an air conditioner to prevent backflow of a refrigerant, and can also be used in a hydraulic system to prevent reverse flow of oil or in a pneumatic system to prevent reverse flow of compressed air.

Specifically, the utility model provides a check valve 100 includes valve body 10, valve seat 14 and case 20, has valve pocket 13 in the valve body 10, and valve seat 14 has seted up valve port 141, and case 20 is located valve pocket 13 to can do the motion in valve pocket 13 and open and close valve port 141, the one end of valve body 10 far away from valve port 141 is equipped with necking down section 15, is used for restricting case 20 to break away from valve pocket 13 along valve body 10 axis direction; at least one blocking piece 151 is arranged on the inner wall of the neck section 15, a limiting part 21 is arranged on the valve core 20, and the limiting part 21 can be matched with the blocking piece 151 to limit the valve core 20 to rotate around the axis of the valve body 10.

It should be noted that, in the conventional check valve 100, the valve element 20 moves in the valve body 10 to realize the opening and closing functions of the check valve 100, the valve element 20 can freely rotate in the valve body 10, and during the operation of the check valve 100, the valve element 20 rotates due to the fluid flowing through the inside, thereby generating noise. In the present embodiment, the stopper 151 is disposed on the inner wall of the constriction section 15, so that the valve element 20 abuts against the stopper 151 and cannot rotate when moving to the constriction section 15, thereby preventing noise from being generated. It should be noted that, in the present embodiment, since the gravity check valve 100 is used to prevent backflow by closing the valve port 141 by the self-gravity of the valve element 20, the check valve 100 is disposed longitudinally, so that the check valve 100 can achieve the effect of one-way flow.

As shown in fig. 1, a first connecting pipe 11 and a second connecting pipe 12 are further respectively arranged at two ends of the valve body 10, and the diameters of the first connecting pipe 11 and the second connecting pipe 12 are both smaller than the diameter of the valve body 10; in addition, the valve body 10, the first connection pipe 11 and the second connection pipe 12 may be integrally formed or may be separately connected.

Preferably, the valve body 10 is a long cylinder and is formed into a hollow structure, in this embodiment, the valve body 10 is made of cast copper; of course, in other embodiments, the valve body 10 may be made of other materials such as cast iron, and is not limited herein.

As shown in fig. 2, the valve seat 14 is used for mounting the valve element 20, a valve port 141 is formed at the center of the valve seat 14, a recess 142 is formed at the outer periphery of the valve seat 14, and a caulking portion 16 is formed on the cavity wall of the valve cavity 13, and the valve seat 14 is fixed in the valve body 10 by caulking and fixing the caulking portion 16 corresponding to the recess 142 by pressing from the outside.

Preferably, in the present embodiment, the valve seat 14 is made of brass; of course, in other embodiments, other types of materials may be used for the valve seat 14, and are not limited herein.

Alternatively, the caulking portion 16 may be formed by roll caulking in which caulking is performed over the entire circumference of the valve body 10, or may be formed by performing partial caulking (for example, punch processing) at a plurality of positions, and is not limited herein.

The valve core 20 comprises a main body 22 and a plurality of guide portions 23, the guide portions 23 are arranged on the side wall of the main body 22 and can be matched with the cavity wall of the valve cavity 13, one end of each guide portion 23 extends towards the blocking member 151 and protrudes out of the main body 22, a flow channel is formed between every two adjacent limiting portions 21, the limiting portions 21 are arranged at one ends, close to the blocking member 151, of the guide portions 23, and the guide portions 23 have the function of sliding guide, so that the valve core 20 can slide up and down along the cavity wall of the valve cavity 13, and the valve core 20 can conveniently move relatively in the valve body 10.

Preferably, in the present embodiment, the valve body 20 is made of a synthetic resin material, and the guide portion 23 and the main body 22 are integrally molded; of course, in other embodiments, the valve core 20 may be made of other types of materials, and is not limited herein.

Further, the limiting portion 21 includes a limiting section 211 and an abutting section 212, the limiting section 211 is connected to the guiding portion 23 and is used for matching with the necking section 15 to limit the axial direction of the valve core 20 to be separated from the valve cavity 13; the abutting section 212 is disposed at an end of the limiting section 211 away from the guiding portion 23, and the abutting section 212 can abut against the blocking member 151 to limit circumferential rotation of the valve core 20.

Further, the necking section 15 includes a first section 152 and a second section 153, the first section 152 is connected with the valve body 10, the second section 153 is connected to one end of the first section 152 far away from the valve body 10, the limiting portion 21 is arranged on the inner wall of the second section 153, and the limiting section 211 can move to the first section 152 along with the valve core 20 and is matched with the first section 152 to limit the axial movement of the valve core 20; the abutment section 212 extends from the first section 152 to the second section 153 with the movement of the spool 20 and engages the stop 151.

It should be noted that, when the valve core 20 moves towards the position of the neck section 15, the limit section 211 abuts against the inner wall of the first section 152, so that the valve core cannot move further towards the position separated from the valve cavity 13; when the abutting section 212 abuts against the blocking member 151, the valve element 20 is prevented from moving circumferentially, so that the valve element 20 cannot rotate, and noise is prevented from being generated.

Specifically, the second section 153 is a tapered section, the outer side surface of the abutting section 212 is an inclined surface 212a, and the inclined surface 212a can be attached to the inner wall of the second section 153, so that the limiting effect is further enhanced.

Alternatively, in this embodiment, the blocking member 151 may be disposed at the first section 152, and may also be disposed at the second section 153, so long as the blocking member 151 is disposed within the range of the neck section 15, the purpose of preventing the valve core 20 from rotating may be achieved, and the specific disposition position of the blocking member 151 is not limited herein.

Alternatively, the blocking member 151 may be a bump, a rib, or other shape protruding from the inner wall of the neck section 15, which is not limited herein. In this embodiment, the blocking member 151 is a bump, which is more convenient for processing.

Alternatively, the shape of the blocking member 151 may be a circle, a square, a polygon, etc., without limitation.

Alternatively, the number of the blocking members 151 may be plural, and one blocking member 151 is disposed between two adjacent guide portions 23, so that the valve core 20 may rotate to a position where the limiting portion 21 abuts against the blocking member 151 in a shortest path, so that the valve core 20 stops rotating at a fastest speed, which may better prevent noise from being generated.

Preferably, in the present embodiment, the blocking member 151 is made of metal, and is integrally formed with the valve body 10 by an integral molding process (e.g., a press process) when the valve body 10 is manufactured by the integral molding process; of course, in other embodiments, the blocking member 151 may be separately manufactured by welding or the like after the valve body 10 is manufactured, and the manufacturing method is not limited herein.

The utility model also provides an air conditioner (not shown), this air conditioner includes refrigeration piping and check valve 100, and the refrigeration piping is connected in check valve 100.

The air conditioner also has the advantages of the check valve.

In the working process, when fluid enters the valve cavity 13 from the second connecting pipe 12, the pressure of the fluid pushes the valve core 20 open in the direction of separating from the valve seat 14, at the same time, the valve port 141 is opened, in the process of circulating the fluid in the direction of the first connecting pipe 11, the valve core 20 simultaneously moves towards the first connecting pipe 11 and rotates around the axis of the valve body 10, noise is generated in the moving process, when the valve core 20 moves to the necking section 15, the limiting section 211 abuts against the first section 152, the abutting section 212 abuts against the blocking piece 151 on the second section 153, the valve core 20 stops moving, and the noise also stops immediately; on the other hand, when fluid flows from the first connection pipe 11 to the second connection pipe 12, the valve element 20 moves toward the valve seat 14 to close the valve port 141 under the pushing of the fluid, so that the fluid is prevented from flowing into the second connection pipe 12, the fluid is prevented from flowing backwards, and the one-way circulation effect of the check valve 100 is achieved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A check valve comprises a valve body (10), a valve seat (14) and a valve core (20), wherein a valve cavity (13) is formed in the valve body (10), a valve port (141) is formed in the valve seat (14), the valve core (20) is located in the valve cavity (13) and can move in the valve cavity (13) to open and close the valve port (141), and a neck reducing section (15) is arranged at one end, far away from the valve port (141), of the valve body (10) and used for limiting the valve core (20) to be separated from the valve cavity (13) along the axial direction of the valve body (10);

the valve is characterized in that at least one blocking piece (151) is arranged on the inner wall of the neck section (15), a limiting part (21) is arranged on the valve core (20), and the limiting part (21) can be matched with the blocking piece (151) to limit the valve core (20) to rotate around the axis of the valve body (10).

2. A non-return valve according to claim 1, characterised in that the blocking element (151) is a bead or ridge protruding from the inner wall of the neck section (15).

3. The non-return valve according to claim 1, characterized in that the blocking element (151) is integrally formed with the valve body (10).

4. The check valve according to claim 1, wherein the valve body (20) comprises a main body (22) and a plurality of guiding portions (23), the guiding portions (23) are disposed on a side wall of the main body (22) and can be matched with a cavity wall of the valve cavity (13), one end of each guiding portion (23) extends towards the blocking member (151) and protrudes out of the main body (22), a flow passage is formed between two adjacent limiting portions (21), and the limiting portions (21) are disposed at one end of the guiding portion (23) close to the blocking member (151).

5. The non-return valve according to claim 4, characterized in that the number of the blocking member (151) is plural, and one blocking member (151) is provided between adjacent two of the guide portions (23).

6. The non-return valve according to claim 4, characterized in that the limiting portion (21) comprises a limiting section (211) and an abutting section (212), the limiting section (211) being connected to the guiding portion (23) for cooperating with the necking section (15) to limit the axial disengagement of the spool (20) from the valve chamber (13);

the abutting section (212) is arranged at one end, away from the guide part (23), of the limiting section (211), and the abutting section (212) can abut against the stop piece (151) to limit circumferential rotation of the valve core (20).

7. The non-return valve according to claim 6, characterized in that the necking section (15) comprises a first section (152) and a second section (153), the first section (152) is connected with the valve body (10), the second section (153) is connected with one end of the first section (152) far away from the valve body (10), and the limiting part (21) is arranged on the inner wall of the second section (153);

the limiting section (211) can move to the first section (152) along with the valve core (20) and is matched with the first section (152) to limit the axial movement of the valve core (20); the abutting section (212) extends into the second section (153) from the first section (152) along with the movement of the valve core (20) and is matched with the stop piece (151).

8. The non-return valve according to claim 7, characterized in that the second section (153) is a conical section and the outer side of the abutment section (212) is a bevel, which can be conformed to the inner wall of the second section (153).

9. The non-return valve according to claim 1, characterized in that the valve seat (14) is fixed in the valve chamber (13) by riveting.

10. An air conditioner comprising a refrigeration pipe and the check valve according to any one of claims 1 to 9, wherein the refrigeration pipe is connected to the check valve.