one-way valve

Abstract

The utility model relates to a one-way valve belonging to the field of refrigeration equipment, which comprises a valve seat, a valve body and a valve core, wherein: a valve port and a conical intercepting port are arranged in the valve seat; the valve body is tubular, comprising a sleeving part capable of being sleeved on the valve seat and a valve core sliding guide part providing guidance for the sliding of the valve core; the hole diameter of the sleeving part is larger than that of the valve core sliding guide part so that the sleeving part forms a leakage passage; a hole-equipped stop edge is arranged at the end of the valve core sliding guide part; the valve core is hollow and cavity-shaped, comprising a conical intercepting plug and a valve core body; a leakage communication hole communicating with the leakage passage is arranged on the valve core body; the valve core is arranged in the valve body and can axially slide along the inner hole wall of the valve core sliding guide part. The utility model has a more reasonable structure, can reduce working noise and improve the performance of air conditioners.

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 valve body, a solid valve core, and a valve seat. The valve seat is fixed within the tubular valve body, while the valve core is movably housed within it. Current one-way valve assembly and production methods are as follows: a copper valve seat is inserted into the copper tubular valve body and then pressed to secure it. Next, the valve core is inserted into the valve body, and an annular groove is pressed into the valve body, limiting its movement within the axial range of the valve body between the valve seat and the annular groove. During operation, when the valve core, propelled by the fluid, presses against the valve seat's opening, it seals and blocks both sides of the valve body, achieving flow control. Conversely, when the valve core moves away from the valve seat, the fluid can flow through the valve body, allowing refrigerant and other fluids to pass.

[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 in the valve body, the valve seat is limited by the size of the copper valve body (copper valve bodies in the air conditioning field have certain specifications), resulting in a smaller valve opening of the valve seat, 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. Utility Model Content

[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 valve body, and a valve core, wherein:

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

[0011] The valve body is tubular and includes a sleeve portion that can be fitted onto the valve seat and a valve core sliding guide portion that guides the sliding of the valve core; the diameter of the sleeve portion is larger than the diameter of the valve core sliding guide portion, forming a leakage channel; a perforated flange is provided at the end of the valve core sliding guide portion.

[0012] The valve core is a hollow cavity, comprising a conical flow-blocking plug and a valve core body; the valve core body is provided with a flow-through hole communicating with the flow-through channel; the valve core is disposed in the valve body and can slide axially along the inner wall of the valve core sliding guide.

[0013] In the improved version of the above-mentioned one-way valve, there are two or more discharge communication holes, which are evenly arranged on the circumferential wall of the valve core body at 360 degrees.

[0014] In the improved version of the above-mentioned one-way valve, the valve seat, valve body and valve core are all made of stainless steel.

[0015] In the improved version of the above-mentioned one-way valve, the flow-blocking plug is in the shape of an outwardly convex arc; the flow-blocking port of the valve seat is in the shape of a conical surface that mates with the flow-blocking plug.

[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 valve body, 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 and valve body during the moment of flow closure and opening; on the other hand, during flow closure, the fluid has a large effective area on the valve core, resulting in more uniform force distribution and smoother sliding, which also greatly reduces the impact on the valve seat and valve body. Therefore, 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 utility model;

[0021] Figure 4This 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 valve body 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 valve body 2 is tubular and includes a sleeve portion 21 that can be fitted onto the valve seat 1 and a valve core sliding guide portion 22 that provides guidance for the sliding of the valve core 3. The aperture of the sleeve portion 21 is larger than the aperture of the valve core sliding guide portion 22, forming a discharge channel 211. A retaining edge 222 with a hole 221 is provided at the end of the valve core sliding guide portion 22. In this embodiment, the retaining edge is formed by bending at the outer end of the valve core sliding guide portion 22.

[0026] The valve core 3 is a hollow cavity, which includes a conical flow-blocking plug 31 and a valve core body 32; the valve core body 32 is provided with a flow-through hole 321 that communicates with the flow-through channel 211; the valve core 3 is located inside the valve body 2 and can slide axially along the inner wall of the valve core sliding guide 22.

[0027] In use, the first fluid pipe 4 and the second fluid pipe 5 are welded to both ends of this utility model, as follows: Figure 5 As shown. 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 flow-cutting plug 31 seals the flow-cutting port 12 of the valve seat 1, thus achieving flow cut-off. When flow is open, the fluid in the second fluid pipe 5 acts on the surface of the flow-cutting plug 31 through the valve port 11 to push the valve core 3 open (until the valve core 3 is blocked by the flange 222 of the valve body 2). In this way, the fluid in the second fluid pipe 5 passes through the valve port 11, the flow-cutting port 12, the discharge channel 211 and the discharge connecting hole 321 in sequence and enters the cavity of the valve core body 32 of the valve core 3, and then flows to the first fluid pipe 4, thereby achieving unidirectional flow of fluid.

[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 with the valve body 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 wider, 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, and the impact force on the valve seat and valve core is small at the moment of throttling and opening; on the other hand, when throttling, the fluid has a large action area on the valve core, the force on the valve core is more uniform, and the sliding is more stable, which can also greatly reduce the impact on the valve seat and valve body.

[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] Preferably, there are two or more drain connection holes 321, which are evenly arranged on the circumferential wall of the valve core body 32 at 360 degrees. This ensures that the force on the valve core remains uniform and reduces noise. In this embodiment, there are two drain connection holes 321.

[0033] In this embodiment, the valve seat 1, valve body 2, and valve core 3 are all made of stainless steel, which saves material costs. The valve seat 1 and valve body 2 are fitted together and then welded securely.

[0034] Preferably, the flow-blocking plug 31 is in the shape of an outwardly convex arc; the flow-blocking port 12 of the valve seat 1 is in the shape of a conical surface that mates with the flow-blocking plug 31.

[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 valve body, and a valve core, characterized in that: The valve seat is provided with a valve port and a conical shut-off port; The valve body is tubular and includes a sleeve portion that can be fitted onto the valve seat and a valve core sliding guide portion that guides the sliding of the valve core; the diameter of the sleeve portion is larger than the diameter of the valve core sliding guide portion, forming a leakage channel; a perforated flange is provided at the end of the valve core sliding guide portion. The valve core is a hollow cavity, comprising a conical flow-blocking plug and a valve core body; the valve core body is provided with a flow-through hole communicating with the flow-through channel; the valve core is disposed in the valve body and can slide axially along the inner wall of the valve core sliding guide.

2. The one-way valve according to claim 1, characterized in that: There are two or more venting and connecting holes, which are evenly arranged on the circumferential wall of the valve core body at 360 degrees.

3. The one-way valve according to claim 1 or 2, characterized in that: The valve seat, valve body, and valve core are all made of stainless steel.

4. The one-way valve according to claim 1 or 2, characterized in that: The flow-blocking plug is in the shape of an outwardly convex arc; the flow-blocking port of the valve seat is in the shape of a conical surface that mates with the flow-blocking plug.

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