Valve seat assembly of electronic expansion valve

Abstract

The utility model relates to the technical field of electronic expansion valves, in particular to a valve seat assembly of an electronic expansion valve, which is characterized in that a simple structure of the valve seat assembly is matched with a sealing element to convey fluid, stable conveying of the fluid is guaranteed, assembly difficulty of a valve body assembly is reduced, and production efficiency is improved. Therefore, the electronic expansion valve can be conveniently lightened and the production cost is reduced; comprising a sealing element; the valve seat assembly is arranged in the valve seat assembly; the valve seat assembly is used for guiding a valve needle assembly in the electronic expansion valve, and the sealing piece is used for sealing the interior of the valve seat assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic expansion valves, in particular to a valve seat assembly of an electronic expansion valve. Background Art

[0002] An electronic expansion valve is a device used to control the flow of refrigerant, usually used in refrigeration and air-conditioning systems. Moreover, the electronic expansion valve is superior to traditional throttling mechanisms in terms of superheat control (liquid level control) and flow regulation, has a faster response speed, a wider adjustment range, and more significant energy-saving effects, and has broad application prospects.

[0003] Existing electronic expansion valves, such as those disclosed in the utility model patent with the publication number CN211175434U and an electronic expansion valve disclosed in the utility model patent with the publication number CN220622762U, etc., can all achieve the adjustment of fluid flow.

[0004] However, the valve body structure of existing electronic expansion valves is relatively complex, which is not convenient for production and assembly, and it is not convenient to achieve a good sealing effect with a simple structure. Moreover, the valve body of existing electronic expansion valves is not convenient for guiding the valve needle assembly inside the electronic expansion valve, resulting in poor practicability. Therefore, there is an urgent need for a valve seat assembly of an electronic expansion valve to improve the above problems. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a valve seat assembly of an electronic expansion valve that uses a simple structure of the valve seat assembly in cooperation with a seal to convey fluid. While ensuring the stable conveyance of fluid, the assembly difficulty of the valve body assembly is reduced, thereby facilitating the lightweight of the electronic expansion valve and reducing production costs.

[0006] A valve seat assembly of an electronic expansion valve of the utility model includes a seal; it also includes a valve seat assembly, and the seal is installed inside the valve seat assembly;

[0007] The valve seat assembly guides the valve needle assembly inside the electronic expansion valve, and the seal seals the inside of the valve seat assembly;

[0008] By using a simple structure of the valve seat assembly in cooperation with a seal to convey fluid, while ensuring the stable conveyance of fluid, the assembly difficulty of the valve body assembly is reduced, thereby facilitating the lightweight of the electronic expansion valve and reducing production costs.

[0009] Preferably, the valve seat assembly includes a valve seat and a valve base. The valve base is inserted into the bottom of the valve seat, and an inlet and an outlet are provided at the bottom of the valve base. The fluid passes through the inlet and the outlet of the valve base, and at the same time, the valve seat and the valve base cooperate to guide the valve needle assembly of the electronic expansion valve, so that the valve needle assembly adjusts the flow rate in the valve base, thereby improving the stability of the electronic expansion valve.

[0010] Preferably, a stop end face is provided inside the valve seat, and a groove is provided at the top inside the valve base. The seal is placed in the groove of the valve base, and then the top of the valve base is inserted into the bottom of the valve seat. The stop end face in the valve seat cooperates with the groove in the valve base to limit the seal, and at the same time, the seal seals the joint between the valve seat and the valve base, thereby improving the sealing effect of the valve seat and the valve base.

[0011] Preferably, a guiding section is provided inside the valve base. The valve needle assembly of the electronic expansion valve adjusts the flow rate in the valve base, and at the same time, the guiding section inside the valve base guides the valve needle assembly of the electronic expansion valve, thereby improving the stability during flow rate adjustment.

[0012] Preferably, the top of the valve base is press-fitted into the bottom of the valve seat, and the valve seat and the valve base are welded together, thereby improving the stability of the valve seat and the valve base.

[0013] Preferably, the seal includes an O-ring, and the O-ring is located in the groove of the valve base. The O-ring seals the gap between the valve seat and the valve base, and the valve base seals the gap between the valve base and the valve needle assembly, thereby improving the sealing effect of the electronic expansion valve.

[0014] Preferably, limiting grooves are provided on the outer surfaces of both the valve seat and the valve base, which facilitates the installation of a sealing ring on the outer surfaces of the valve seat and the valve base. After the valve seat and the valve base are installed on the pipeline, the sealing effect between the valve seat, the valve base and the pipeline is improved.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. The integrated design of the valve seat and the valve base improves the strength of the valve seat and the valve base, simplifies the assembly process, and facilitates assembly.

[0017] 2. The installation accuracy is improved by means of press-fit installation and welding.

[0018] 3. The O-ring seals the gap between the valve seat and the valve base to ensure the sealing effect of the valve seat and the valve base.

[0019] 4. The structure has a high integration degree, fewer parts, fewer welding parts, more convenient assembly, and is beneficial to lightweight and cost reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an isometric structural schematic diagram of the present utility model;

[0021] Figure 2 is a front structural schematic diagram of the present utility model;

[0022] Figure 3 is an exploded structural schematic diagram of the present utility model;

[0023] Figure 4 is a front sectional structural schematic diagram of the present utility model;

[0024] Figure 5 is an enlarged front sectional structural schematic diagram of the valve seat of the present utility model;

[0025] Figure 6 is an enlarged front sectional structural schematic diagram of the valve base of the present utility model.

[0026] Reference numerals in the drawings: 1, valve seat; 2, valve base; 3, stop end face; 4, groove; 5, guiding section; 6, O-ring seal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0028] Embodiment

[0029] As Figures 1 to 6 shown, a valve seat assembly of an electronic expansion valve includes a sealing member; it further includes a valve seat assembly, and the sealing member is installed inside the valve seat assembly;

[0030] The valve seat assembly guides the valve needle assembly inside the electronic expansion valve, and the sealing member seals the inside of the valve seat assembly;

[0031] The valve seat assembly includes a valve seat 1 and a valve base 2. The valve base 2 is inserted into the bottom of the valve seat 1, and an inlet and an outlet are provided at the bottom of the valve base 2;

[0032] A stop end face 3 is provided inside the valve seat 1, and a groove 4 is provided at the top inside the valve base 2;

[0033] A guiding section 5 is provided inside the valve base 2;

[0034] The top of the valve base 2 is press-fitted into the bottom of the valve seat 1, and the valve seat 1 and the valve base 2 are welded;

[0035] The seal includes an O-ring 6, and the O-ring 6 is located in the groove 4 of the valve base 2;

[0036] Limit grooves are provided on the outer surfaces of the valve seat 1 and the valve base 2;

[0037] The fluid is conveyed through the simple structure of the valve seat assembly in cooperation with the seal. While ensuring the stable conveyance of the fluid, the assembly difficulty of the valve body assembly is reduced, thereby facilitating the light weight of the electronic expansion valve and reducing the production cost.

[0038] The O-ring 6 of the valve seat assembly of the electronic expansion valve of the present utility model is purchased on the market, and those skilled in the art only need to install and operate it according to the attached instruction manual, without the need for those skilled in the art to perform creative labor.

[0039] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A valve seat assembly of an electronic expansion valve, including a seal; characterized in that, It further includes a valve seat assembly, and the seal is installed inside the valve seat assembly; The valve seat assembly guides the valve needle assembly inside the electronic expansion valve, and the seal seals the inside of the valve seat assembly; The valve seat assembly includes a valve seat (1) and a valve base (2). The valve base (2) is inserted into the bottom of the valve seat (1), and an inlet and an outlet are provided at the bottom of the valve base (2); A stop end face (3) is provided inside the valve seat (1), and a groove (4) is provided at the top inside the valve base (2); The top of the valve base (2) is press-fitted into the bottom of the valve seat (1), and the valve seat (1) and the valve base (2) are welded together.

2. The valve seat assembly of an electronic expansion valve according to claim 1, characterized in that, A guiding section (5) is provided inside the valve base (2).

3. The valve seat assembly of an electronic expansion valve according to claim 1, characterized in that, The seal includes an O-ring (6), and the O-ring (6) is located in the groove (4) of the valve base (2).

4. The valve seat assembly of an electronic expansion valve according to claim 1, characterized in that, Limit grooves are provided on the outer surfaces of the valve seat (1) and the valve base (2).

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