A one-way valve

Abstract

A one-way valve, belonging to the field of refrigeration equipment, includes a valve seat, a housing, and a valve core. The valve seat contains a valve port and a conical shut-off port. The housing is tubular, including a sleeve portion that fits onto the valve seat and a fluid pipe connection portion for connecting with a fluid pipe. The orifice of the sleeve portion is larger than the orifice of the fluid pipe connection portion, forming a valve core baffle at the joint to limit the maximum stroke of the valve core when it is open. The valve core is a hollow cavity, including a conical head and a valve core body. The conical head includes a shut-off portion that can enter and block the shut-off port, and a drain portion blocked outside the shut-off portion. A drain hole is provided on the drain portion. The valve core is disposed in the hollow hole of the sleeve portion of the housing and can slide axially along the wall of the hollow hole. This invention has a more reasonable structure, reducing operating noise and improving air conditioning performance.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to a one-way valve used in refrigeration equipment such as air conditioners. Background Technology

[0002] One-way valves are commonly used in various refrigeration equipment to control the unidirectional flow of fluids. A typical one-way valve consists of a housing, a solid valve core, and a valve seat. The valve seat is fixed within the tubular housing, while the valve core is movably disposed within the housing. Current one-way valve assembly and production methods are as follows: a copper valve seat is installed into a copper housing and then pressed tightly to secure the seat. Next, the valve core is installed into the housing, and an annular groove is pressed into the housing, limiting the valve core's movement within the axial range of the housing between the valve seat and the groove. During operation, when the valve core, propelled by the fluid, presses against the valve port of the valve seat, it seals and blocks both sides of the housing, achieving flow control. When the valve core moves away from the valve seat, the fluid can flow through the housing, allowing the refrigerant and other fluids to flow.

[0003] The one-way valves currently used in air conditioning and other refrigeration equipment have the following main shortcomings:

[0004] 1. Since the valve seat is installed inside the housing, the valve seat is limited by the size of the housing (the copper housing in the air conditioning industry has certain specifications), resulting in a smaller valve port, which reduces the fluid flow and thus affects the heat exchange performance of the air conditioner.

[0005] 2. The valve core is solid and has a small sealing surface, which results in a large repeated impact on the valve seat during the moment of refrigerant cut-off and opening, thus generating a lot of noise.

[0006] 3. Currently, the outer shell and valve seat are mostly made of copper, which results in the high cost of current check valves. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a one-way valve with a more reasonable structure that can improve air conditioning performance and reduce noise.

[0008] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0009] A one-way valve includes a valve seat, a housing, and a valve core, wherein:

[0010] The valve seat is provided with a valve port and a conical shut-off port;

[0011] The outer casing is tubular and includes a sleeve portion that can be fitted onto the valve seat and a fluid pipe connection portion for fitting with a fluid pipe; the orifice of the sleeve portion is larger than the orifice of the fluid pipe connection portion, and they form a valve core stop at the joint to limit the maximum stroke of the valve core when it is open.

[0012] The valve core is a hollow cavity, comprising a conical head and a valve core body; the conical head includes a choke portion that can enter the choke port and block the choke port, and a drain portion that is blocked outside the choke portion; a drain hole is provided on the drain portion; the valve core is disposed in the hollow hole of the sleeve portion of the outer shell and can slide axially along the wall of the hollow hole.

[0013] In the improved version of the one-way valve described above, the flow-blocking part of the valve core is a convex arc shape; the flow-blocking port of the valve seat is a conical shape that mates with the flow-blocking part.

[0014] In the improved version of the one-way valve described above, there are two or more vent holes, which are evenly arranged at 360 degrees on the outer peripheral wall of the vent portion of the valve core.

[0015] In the improved version of the above-mentioned one-way valve, the valve seat, the outer shell, and the valve core are all made of stainless steel.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: Since the valve seat is not located inside the fluid pipe, but rather one end can be sleeved with the fluid pipe and the other end can be sleeved with the outer shell, the valve port of the valve seat is not limited by the size of the fluid pipe, thus allowing it to open wider, thereby enhancing the fluid flow capacity, increasing the flow rate, and improving the performance of the air conditioner. In addition, since the valve core is a hollow cavity structure, on the one hand, the valve core is lightweight, resulting in less impact on the valve seat when the flow is cut off; on the other hand, when the flow is cut off, the fluid has a large contact area with the valve core, resulting in more uniform force distribution and smoother sliding, which also greatly reduces the impact on the valve seat, thereby reducing the noise caused by the impact. Moreover, when the flow is opened, extremely low pressure can open the valve core, and while pressing the valve core to the highest open position, it effectively prevents the valve core from vibrating and generating noise. The structure of this utility model is more reasonable, reducing operating noise and improving the performance of the air conditioner.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 1 ;

[0019] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the present utility model. Figure 2 ;

[0020] Figure 3 This is an assembly diagram of an embodiment of the present invention;

[0021] Figure 4 This is a structural schematic diagram of an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure in the actual application of an embodiment of this utility model. Detailed Implementation

[0023] This utility model is a one-way valve, such as Figures 1 to 4 As shown, it includes a valve seat 1, a housing 2, and a valve core 3, wherein:

[0024] The valve seat 1 is provided with a valve port 11 and a conical shut-off port 12;

[0025] The outer casing 2 is tubular and includes a sleeve portion 21 that can be fitted onto the valve seat 1 and a fluid pipe connection portion 22 for fitting with a fluid pipe; the aperture of the sleeve portion 21 is larger than the aperture of the fluid pipe connection portion 22, and they form a valve core stop 23 at the joint to limit the maximum stroke when the valve core is open.

[0026] The valve core 3 is a hollow cavity, comprising a conical head 31 and a valve core body 32. The conical head 31 includes a flow-blocking portion 311 that can enter and block the flow-blocking port 12, and a flow-draining portion 312 that is blocked outside the flow-blocking portion 311. A flow-draining hole 3121 is provided on the flow-draining portion 312. The valve core 3 is disposed in the hollow hole of the sleeve portion 21 of the outer shell 2 and can slide axially along the wall of the hollow hole. The flow-draining hole 3121 is located in the positive direction of the flow channel, so that the fluid does not flow to both ends when flowing in the valve core, thereby reducing pressure loss and increasing the energy efficiency ratio.

[0027] When using this utility model, such as Figure 5 As shown, the two ends of the one-way valve are welded with a first fluid pipe 4 and a second fluid pipe 5 respectively. The first fluid pipe 4 is inserted into the fluid pipe connection part 22 of the outer casing 2 and then welded to it. The second fluid pipe 5 is inserted into the valve seat 1 and then welded to it. During operation, when flow is to be cut off, the fluid in the first fluid pipe 4 pushes the valve core 3 towards the valve port 11 of the valve seat 1 until the cutting-off part 311 blocks the cutting-off port 12 of the valve seat 1, thus achieving flow cut-off. When flow is to be opened, the fluid in the second fluid pipe 5... The fluid acts on the surface of the throttling part 311 through the valve port 11 to push the valve core 3 open. At this time, as long as it is pushed open slightly, the fluid in the second fluid pipe 5 can quickly enter the cavity of the valve core 3 through the valve port 11, the throttling port 12 and the venting hole 3121 on the venting part 312 of the valve core 3, and then flow to the first fluid pipe 4, thereby realizing the rapid unidirectional flow of the fluid. In this way, when the flow is turned on, the extremely low pressure can open the valve core and press the valve core to the highest opening position, while effectively preventing the valve core from vibrating and generating noise.

[0028] As can be seen from the above:

[0029] Since the valve seat 1 is not located inside the fluid pipe, but can be sleeved with the fluid pipe at one end and sleeved with the outer casing 2 at the other end, the valve port 11 of the valve seat 1 is not limited by the size of the fluid pipe, so it can be opened larger, thereby enhancing the fluid flow capacity, increasing the flow rate, and thus improving the performance of the air conditioner.

[0030] In addition, since the valve core 3 is a hollow cavity structure, on the one hand, the valve core 3 is lightweight, resulting in less impact on the valve seat and valve core when the flow is cut off; on the other hand, when the flow is cut off, the fluid has a large contact area with the valve core, resulting in more uniform force distribution and smoother sliding, which can also greatly reduce the impact on the valve seat, thereby reducing the noise caused by the impact; moreover, when the flow is opened, extremely low pressure can open the valve core and press the valve core to the highest open position, effectively preventing the valve core from vibrating and generating noise.

[0031] Therefore, the structure of this utility model is more reasonable, which can reduce operating noise and improve the performance of the air conditioner.

[0032] In this embodiment, as Figure 3 , 4 As shown, the flow-blocking part 311 of the valve core 3 is an outwardly convex arc shape; the flow-blocking port 12 of the valve seat 1 is a conical shape that matches the flow-blocking part 311. In this way, by using the matching arc surfaces between the flow-blocking port and the flow-blocking part of the valve core to block the fluid, it can be effectively ensured that the one-way valve is always in the best sealing state of line sealing when the flow is blocked.

[0033] Preferably, there are two or more drain holes 3121, which are evenly arranged at 360 degrees on the outer peripheral wall of the drain portion 312 of the valve core 3. This ensures that the force on the valve core remains uniform and reduces noise. In this embodiment, there are four drain holes 3121.

[0034] In this embodiment, the valve seat 1, the outer shell 2, and the valve core 3 are all made of stainless steel, which saves material costs. The valve seat 1 and the outer shell 2 are fitted together and then welded securely.

[0035] In the description of this utility model, it should be understood that terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 this utility model.

[0036] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A one-way valve, comprising a valve seat, a housing, and a valve core, characterized in that: The valve seat is provided with a valve port and a conical shut-off port; The outer casing is tubular and includes a sleeve portion that can be fitted onto the valve seat and a fluid pipe connection portion for fitting with a fluid pipe; the orifice of the sleeve portion is larger than the orifice of the fluid pipe connection portion, and they form a valve core stop at the joint to limit the maximum stroke of the valve core when it is open. The valve core is a hollow cavity, comprising a conical head and a valve core body; the conical head includes a choke portion that can enter the choke port and block the choke port, and a drain portion that is blocked outside the choke portion; a drain hole is provided on the drain portion; the valve core is disposed in the hollow hole of the sleeve portion of the outer shell and can slide axially along the wall of the hollow hole.

2. A one-way valve according to claim 1, characterized in that: The flow-cutting part of the valve core is a convex arc shape; the flow-cutting port of the valve seat is a conical shape that mates with the flow-cutting part.

3. A check valve according to claim 1 or 2, characterized in that: There are two or more vent holes, which are evenly arranged at 360 degrees on the outer peripheral wall of the vent section of the valve core.

4. A check valve according to claim 1 or 2, characterized in that: The valve seat, housing, and valve core are all made of stainless steel.

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