An embedded check valve

Abstract

This utility model relates to the field of one-way valves and discloses an embedded one-way valve, including a valve body. The valve body is composed of a valve seat and a valve sleeve, which are integrally formed. A valve core is disposed inside the valve body, and a spring is disposed between the valve core and the valve body. In this utility model, by forming the valve seat and valve sleeve into an integral valve body structure, the welding ring and outer body are eliminated, thereby reducing external welding points and components, simplifying the structure, and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of one-way valves, specifically an embedded one-way valve. Background Technology

[0002] A one-way valve is a device in air conditioning systems that controls the flow of refrigerant. Its activation enables features such as uninterrupted operation at low temperatures and delayed defrosting. During cooling, a slight reverse pressure difference closes the one-way valve, reducing the flow path. As the refrigerant gradually converges, the number of flow paths decreases, increasing the flow rate and allowing for better heat dissipation. This results in an 8% increase in cooling capacity compared to ordinary air conditioners. During heating, the one-way valve opens, increasing the flow path and reducing pressure drop compared to ordinary air conditioners. This increases the efficient heat absorption area, resulting in a 10% increase in heating capacity. This not only makes cooling and heating more efficient but also saves energy, reducing electricity consumption by approximately 12% annually.

[0003] Currently, most check valves are made of stainless steel and mainly consist of a valve seat, valve core, valve sleeve, valve body, spring, and welding ring. The entire valve is made of stainless steel. The valve sleeve and valve seat cooperate to form a closed space. Therefore, there are the following disadvantages: the valve seat and valve sleeve are separate, requiring additional welding rings and outer body for connection and fixation, which increases the number of parts and welding points, making the structure more complex and leading to a decrease in production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an embedded one-way valve to solve the problem of valve seat separation from valve sleeve, which requires additional welding rings and outer bodies for connection and fixation, increases the number of parts and welding points, makes the structure more complex, and leads to a decrease in production efficiency.

[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: an embedded one-way valve, including a valve body, the valve body being composed of a valve seat and a valve sleeve, the valve seat and valve sleeve being an integral structure, a valve core being provided inside the valve body, and a spring being provided between the valve core and the valve body.

[0006] Preferably, a fixing member is fixed inside the valve body, and the spring is disposed inside the fixing member.

[0007] Preferably, a copper tube is fixed to the outside of the valve body.

[0008] Preferably, the left end of the valve body is chamfered.

[0009] Preferably, the valve seat and valve sleeve are manufactured by integral molding, the valve core has a conical cylindrical structure with a top diameter smaller than the bottom diameter, and a sealing conical surface at the top for sealing with the valve seat. The valve core is embedded inside the valve body.

[0010] Preferably, the left end of the valve body is secured with a fixing member, which is an integral guide and limiting sleeve with a left end opening diameter larger than the right end opening diameter. The spring is a conical spiral with a conical structure that is larger at one end and smaller at the other. The larger end is used to nest in the left end opening of the fixing member, and the smaller end is in contact with the center pressure point at the bottom of the valve core.

[0011] Compared with existing technologies, an embedded check valve employing the above technical solution has the following beneficial effects:

[0012] 1. In use, by forming an integral structure between the valve seat and the valve sleeve, the welding ring and outer body are eliminated, thereby reducing external welding points and parts, making the structure simpler and improving production efficiency;

[0013] Second, during use, the fasteners securely fix the spring in a specific position, ensuring that the spring will not shift or wobble during operation, thereby improving the working stability and reliability of the one-way valve. The valve body is made of brass, which can be directly high-frequency welded to copper pipes, improving production efficiency. Using a φ. copper pipe, through multiple flaring processes, the outer body of the one-way valve is formed. The valve body is then embedded inside the copper pipe, and high-frequency welding is used to complete a variable flow divider assembly with only the valve core. Using the copper pipe assembly as the outer body of the one-way valve and the valve core embedded internally reduces weld points and lowers the risk of welding defects.

[0014] Thirdly, during use, the chamfered design facilitates smoother insertion of the valve body into the copper tube, reducing resistance and friction during insertion and improving assembly efficiency. By manufacturing the valve seat and valve sleeve as a single piece, no additional connecting parts or welding are needed to assemble them into the valve body. The sealing cone surface at the top of the valve core seals with the valve seat for one-way closure. This structure opens under positive fluid pressure and closes under negative pressure, achieving unidirectional control. The left end of the fixing component accommodates the larger end of the spring, while the right end limits the axial movement of the smaller end. This applies a smooth and vertical restoring force to the valve core when the spring is compressed, ensuring the valve core's center guidance and return accuracy. The conical structure of the valve core and spring, in conjunction with the fixing component, helps control the spring's guidance and compression displacement stability, and optimizes the center alignment between the spring, fixing component, and valve core, preventing misalignment or jamming. Combined with the conical sealing structure of the valve core and the spring's guiding compression path, the opening and closing actions are precise and controllable, resulting in excellent sealing performance. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0016] Figure 2 This is a breakdown diagram of an embodiment.

[0017] Figure 3 This is a schematic cross-sectional view of the valve body in an embodiment.

[0018] Figure 4 This is a schematic cross-sectional view of the valve core in an embodiment.

[0019] Figure 5 This is a schematic cross-sectional view of the fastener in the embodiment.

[0020] In the diagram: 1. Valve body; 2. Valve seat; 3. Valve sleeve; 4. Valve core; 5. Spring; 6. Fixing component; 7. Copper tube; 8. Chamfer. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, an embedded one-way valve includes a valve body 1, which is composed of a valve seat 2 and a valve sleeve 3. The valve body 1 is made of brass. The valve seat 2 and the valve sleeve 3 are an integral structure. A valve core 4 is provided inside the valve body 1, and a spring 5 is provided between the valve core 4 and the valve body 1.

[0023] In use, the valve body 1 is formed by innovatively changing the valve seat 2 and valve sleeve 3 into an integrated structure. This integrated design eliminates the complex assembly process of the traditional split structure. The valve core 4 is precisely embedded inside the valve body 1, which is made of brass. This material not only has good mechanical properties but also facilitates subsequent connection with other components. By forming the valve body 1 with the valve seat 2 and valve sleeve 3 into an integrated structure, the welding ring and outer body are eliminated, thereby reducing external welding points and parts, simplifying the structure, and improving production efficiency.

[0024] like Figures 1-3 and Figure 5 As shown, a fixing member 6 is fixed inside the valve body 1, and a spring 5 is disposed inside the fixing member 6.

[0025] During use, the fixing part 6 helps to firmly fix the spring 5 in a specific position, ensuring that the spring 5 will not be displaced or shaken during operation, thereby improving the working stability and reliability of the one-way valve.

[0026] like Figures 1-3 As shown, a copper tube 7 is fixed to the outside of the valve body 1, and a chamfer 8 is provided at the left end of the valve body 1.

[0027] In use, the valve body 1 is made of brass, which can be directly high-frequency welded to the copper pipe 7, improving production efficiency. The φ12.7 copper pipe 7 is flared multiple times to form the outer body of the one-way valve. The valve body 1 is then embedded inside the copper pipe 7, and high-frequency welding is used to complete a variable flow divider assembly with only the valve core 4. Using the copper pipe 7 as the outer body of the one-way valve and the valve core 4 embedded inside reduces weld points and lowers the risk of welding defects. The chamfer 8 facilitates smoother insertion of the valve body 1 into the copper pipe 7, reducing resistance and friction during the insertion process and improving assembly efficiency.

[0028] like Figures 3-5 As shown, the valve seat 2 and valve sleeve 3 are manufactured by integral molding. The valve core 4 has a conical cylindrical structure with a top diameter smaller than the bottom diameter. The top is provided with a sealing conical surface for sealing with the valve seat 2. The valve core 4 is embedded inside the valve body 1. The left end of the valve body 1 is locked with the fixing part 6. The fixing part 6 is an integral guide and limiting sleeve with a left end opening diameter larger than the right end opening diameter. The spring 5 is a conical spiral with a conical structure that is larger at one end and smaller at the other. The larger end is used to nest in the left end opening of the fixing part 6, and the smaller end is in contact with the bottom center pressure point of the valve core 4.

[0029] In use, the valve seat 2 and valve sleeve 3 are manufactured as a single piece, eliminating the need for additional connecting parts or welding to assemble them into the valve body 1. The sealing cone surface at the top of the valve core 4 seals with the valve seat 2 to achieve a one-way closing function. This structure opens under positive fluid pressure and closes under negative pressure, thus achieving one-way control. The left end of the fixing part 6 accommodates the larger end of the spring 5, while the right end limits the axial movement range of the smaller end of the spring 5. This allows the spring to apply a smooth and vertical restoring force to the valve core 4 when compressed, ensuring the center guidance and return accuracy of the valve core 4. The conical structure of the valve core 4 and spring 5, in conjunction with the fixing part 6, helps control the guidance and compression displacement stability of the spring 5 and optimizes the center alignment between the spring 5, the fixing part 6, and the valve core 4, avoiding skewing or jamming. Combined with the conical sealing structure of the valve core 4 and the guiding compression path of the spring 5, the opening and closing actions are precise and controllable, resulting in excellent sealing performance.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An embedded one-way valve, comprising a valve body (1), characterized in that, The valve body (1) is composed of a valve seat (2) and a valve sleeve (3). The valve seat (2) and the valve sleeve (3) are an integral structure. The valve body (1) is provided with a valve core (4) inside. A spring (5) is provided between the valve core (4) and the valve body (1). A copper tube (7) is fixed to the outside of the valve body (1). The valve body (1) is embedded in the inside of the copper tube (7). The copper tube (7) forms the outer body of a one-way valve. The valve seat (2) and valve sleeve (3) are manufactured by integral molding. The valve core (4) has a conical cylindrical structure with a top diameter smaller than the bottom diameter. The top is provided with a sealing cone surface for sealing with the valve seat (2). The valve core (4) is embedded inside the valve body (1). The valve body (1) is fixed with a fixing member (6) inside. The fixing member (6) is locked at the left end of the valve body (1). The fixing member (6) is an integral guide limiting sleeve. Its left end opening diameter is larger than its right end opening diameter. The spring (5) is a conical spiral shape with a conical structure that is larger at one end and smaller at the other. The larger end is used to be nested at the left end opening of the fixing member (6), and the smaller end is in contact with the bottom center pressure point of the valve core (4).

2. An embedded check valve according to claim 1, characterized in that: The spring (5) is disposed inside the fixing member (6).

3. An embedded check valve according to claim 1, characterized in that: The valve body (1) has a chamfer (8) at the left end.

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