Patent ID: 12259164

In the figures,100represents a check valve;10represents a valve body;11represents a valve cavity;12represents a first connection pipe;13represents a second connection pipe,14represents a valve port;15represents a limiting step;20represents a valve cover;21represents a stop rod;22represents a limiting groove;40represents a valve core;41represents a limiting portion;411represents a wing plate;412represents a tail plate;413represents a second step;414represents an accommodating area;415represents a flow channel,42represents a sealing surface; and200represents an air conditioner.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by a person of ordinary skill in the art without making creative labor fall within the scope of protection of this disclosure.

It should be noted that when a component is said to be “disposed” on another component, it may be directly disposed on the other component or there may be a centered component. When a component is considered to be “located” on another component, it may be directly located on the other component or there may be both centered components. When a component is considered to be “fixed” to another component, it may be fixed directly to the other component or there may be a centered component as well.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of skill in the art belonging to the present disclosure. The terms used herein in the specification of this disclosure are for the purpose of describing specific embodiments only and are not intended to limit this disclosure. The term “or/and” as used herein includes any and all combinations of one or more of the relevant listed items.

Referring toFIG.1toFIG.6, the present disclosure provides a check valve100. The check valve100can be configured for preventing backflow of a refrigerating agent in an air conditioner200, preventing reverse flow of oil in a hydraulic system, or preventing reverse flow of compressed air in an air-operated system.

Referring toFIG.1andFIG.2, specifically, the check valve100of the present disclosure includes a valve body10, a valve cover20and a valve core40. The valve body10includes a valve cavity11. The valve body10is provided with a valve port14. The valve core40is located in the valve cavity11and capable of moving in the valve cavity11to open or close the valve port14. The valve cover20is covered on the valve body10and configured for limiting the valve core40from separating from the valve cavity11along an axis of the valve body10.

Both ends of the valve body10are provided with a first connection pipe12and a second connection pipe12. Both a diameter of the first connection pipe12and a diameter of the second connection pipe12are not less than a diameter of the valve body10. The valve cover is in a hollow-shaped structure with two opening at both ends. The first connection pipe12is connected to and in communication with an end of the valve body away from the valve cover20. The second connection pipe is connected to and in communication with the valve cover20. In addition, the valve body10and the first connection pipe12can be integrally formed or separately formed and connected with each other, and the valve cover20and the second connection pipe13can be integrally formed or separately formed and connected with each other.

In some embodiments, the valve is tubular-shaped and in a hollow-shaped structure. In the present embodiment, the valve body is made of cast copper. In some embodiment, the valve body can be made of materials such as iron and the like, which are not limited herein.

A stop rod21is provided on the valve cover20, or an end of the valve body10adjacent to the valve cover20. The valve core40is provided with a limiting portion41, and the limiting portion41is configured for matching with the stop rod21to circumferentially limit the valve core40.

It should be noted that in related art, the valve core moves in the valve body to open or close the check valve. The valve core is capable of rotating freely in the valve body. Since the valve core rotates in the valve body under the action of a medium in the valve body, noises are generated.

In the present embodiment, by matching between the stop rod21and the limiting portion41, the valve core40can be circumferentially limited. Therefore, noise caused by collision between the valve core40and an inner wall of a valve body10and a valve cover20when the valve core40rotates can be avoided. It should be noted that in the present embodiment, the check valve100is a gravity-held check valve in which the valve port14is sealed by gravity of the valve core40to prevent the medium from reversely flowing. Therefore, only when the check valve100is longitudinally disposed, the check valve100can achieve the effect of monodirectional flow. It should be noted that in the present disclosure, the medium represents a flow that flows through the check valve100. In the present embodiment, the medium is a refrigerating agent. In some embodiments, the medium can be compressed air, and the like.

Referring toFIG.3andFIG.4, the valve core40can be provided with a plurality of limiting portions41. The plurality of limiting portions41can be arranged along a circumference of the valve core40. The stop rod21can extend through any two of the plurality of limiting portions41and can be configured for abutting against sidewalls of the two of the plurality of limiting portions41to limit circumferential movement of the valve core40. In this way, the stop rod21can match with the limiting portion41, not only rotation of the valve core40in an anticlockwise direction can be limited, but also rotation of the valve core40in an clockwise direction can be limited.

In some embodiments, the valve core40can be provided with three limiting portions41. Accommodating areas414can be defined between any two of the three limiting portions41along a circumference of the valve core40. An end of the stop rod21can be located in one of the accommodating areas414, and the other end of the stop rod21can extend to and be located in another one of the accommodating areas414. In this way, the stop rod can match with and limit all of the three limiting portions41. It could be under stood that by providing three limiting portions41, on the premise that rotation of the valve core40both in the clockwise direction and the anticlockwise direction can be limited, the number of the limiting portion41can be controlled, so that the number of the limiting portion41will not be too many and the limiting portion41will not occupy much of a volume of the valve cavity11, and the flowing performance of the medium in the check valve100will not be influenced. At the same time, the limiting portion can keep the valve core40in balance.

Referring toFIG.5, in some embodiments, the valve cover20can be provided with a limiting groove22. The stop rod21can be located in the limiting groove22. An inner wall of the end of the valve body10adjacent to the valve cover20can be provided with a limiting step15. An end surface of the valve cover20adjacent to the valve body10can abut against the limiting step15. Since a side of the limiting groove22is provided with an opening, a side of the stop rod21can abut against the limiting step15, so that the stop rod21can be fixed, and the limiting step15can limit the valve cover20at the same time.

Referring toFIG.6, in some embodiments, an inner wall of the end of the valve body10adjacent to the valve cover20can be provided with a limiting step15. The limiting step15can be provided with a limiting groove22. An end surface of the valve cover20adjacent to the valve body10abuts against the limiting step15. Since a side of the limiting groove22is provided with an opening, the stop rod21can be disposed in the limiting groove22and abut against an end of the valve cover20adjacent to the valve body10. Therefore, the stop rod21can be fixed, and the limiting step15can limit the valve cover at the same time.

Referring toFIG.1, an axis of the stop rod21can be perpendicular to an axis of the check valve100, so that both ends of the stop rod21can match with and be limited by the limiting portion41. In addition, at the same time that the stop rod21can match with and be limited by each of the limiting portions41, a length of the stop rod21can be shortened and a mounting area can be saved.

In some embodiments, an axis of the stop rod21can be collinear with a center line of an end surface of the valve cover20adjacent to the stop rod21. In this way, a length of the stop rod21can be prolonged, so that the stop rod21can match with each of all the limiting portions41, thereby playing a better limiting role.

A cross section of the stop rod21can be circle-shaped, tetragon-shaped, or triangle-shaped.

Referring toFIG.4, the limiting portion41can include a wing plate411and a tail plate412. The tail plate412can be disposed on the wing plate411, an end of the tail plate412adjacent to the valve cover20can protrude out from the valve core40, so that the stop rod21can match with a sidewall of the tail plate412. A second step413can be disposed between the tail plane412and the wing plate411, an end of the tail plate412can abut against the inner wall of the valve cover20, so as to limit the valve core40along the axis of the valve core40. By providing the second step413, an outer surface of the tail plate412can retract relative to the wing plate411and a diameter of an excircle of the tail plate411can be reduced, so that the tail plate412can extend in the valve cover20. Thus, the stop rod21can match with a sidewall of the tail plate412, and the valve core40can be limited.

A side of the limiting portion41can extends toward an inner wall of the valve body10and protrudes out from a sidewall of the valve core40, and a flow channel415can be defined between adjacent two limiting portions41, so that the medium can flow in the flow channel415.

An end of the valve core40away from the stop rod21can be provided with a sealing surface42. The sealing surface42can match with the inner wall of the valve body10to seal the valve port14.

The sealing surface42can be a taper-shaped surface, which can define a taper-shaped sealing with the valve port14and improve the sealing performance.

In a process of mounting, the valve core40can firstly be disposed in the valve body10. Then the stop rod21can be placed in the limiting groove22in the valve cover20or the limiting groove in the valve body10, and the valve cover20can be covered on the valve body10, so that the stop rod21can abut against the valve cover20or the limiting step15.

The present disclosure further provides an air conditioner200(not shown) including the check valve100disclosed above.

When the air conditioner200is in operation, in a process the medium flows into the valve port14from the first connection pipe12, a pressure of the medium can open the valve core40along a direction separating from the valve port14. At this time, the valve port14can be opened. In a process the medium flows towards the second connection pipe13, the valve core40can move towards a direction approach the second connection pipe13and rotate around an axis of the valve body10at the same time. Noises can be caused by collision between the valve core40and the valve body10in the moving process. When the valve core40moves to a position adjacent to the valve cover20, the stop rod21can abut against a side wall of the limiting portion41, and a tail plate412can abut against an inner wall of the valve cover20, movement of the valve core40stops, and the noises can stop therewith. On the other hand, in the process the medium flows from the second connection pipe13to the first connection pipe12, the valve core40can move towards the valve port14under the action of the medium until the valve port14is sealed. Therefore, the medium can be prevented from flowing into the first connection pipe12, and backflow of the medium can be avoided, thereby achieving a monodirectional flow of the check valve100.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features are described in the embodiments. However, as long as there is no contradiction in the combination of these technical features, the combinations should be considered as in the scope of the present disclosure.

The above-described embodiments are only several implementations of the present disclosure, and the descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present disclosure. It should be understood by those of ordinary skill in the art that various modifications and improvements can be made without departing from the concept of the present disclosure, and all fall within the protection scope of the present disclosure. Therefore, the patent protection of the present disclosure shall be defined by the appended claims.