Electronic expansion valve
An electronic expansion valve, valve body technology, applied in the direction of lift valve, valve device, valve details, etc., can solve problems such as affecting the operation of the electronic expansion valve, large friction force of the valve core assembly, affecting the movement of the valve core assembly, etc.
Active Publication Date: 2022-03-08
ZHEJIANG DUNAN HETIAN METAL CO LTD
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- Application Information
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Problems solved by technology
[0003] In the prior art, when the electronic expansion valve is opened instantly, the valve needle and the spring sleeve are subjected to a downward pressure differential force, and the screw will be separated from the inner ring of the bearing and the spring sleeve because there is no axial limit, which will affect the control of the screw. The movement of the valve core assembly and the rotation of the screw itself will generate a lot of friction on the valve core assembly, thus affecting the normal operation of the electronic expansion valve
Method used
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] It should be noted that when a component is said to be "mounted on" another component, it may be directly on the other component or there may be an intervening component. When a component is said to be "set on" another component, it may be set directly on the other component or there may be an intervening component at the same time. When a component is said to be "fixed" to another component, it may be directly fixed to the other component or there may ...
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The invention relates to the technical field of refrigeration, in particular to an electronic expansion valve. An electronic expansion valve includes a screw assembly, a spring sleeve and a valve core assembly, the screw assembly includes a screw, and one end of the screw near the valve core assembly is provided with a screw shoulder, and the screw shoulder is accommodated in the spring In the sleeve; a bearing is provided between the screw and the valve core assembly, the outer diameter of the screw shoulder is larger than the diameter of the inner ring of the bearing, and smaller than the diameter of the outer ring of the bearing; the spring sleeve is It is cylindrical and includes a first opening for installing the screw assembly and a second opening for installing the valve core assembly, the inner diameter of the first opening is smaller than the outer diameter of the screw shoulder. The invention has the advantages of preventing the screw assembly from coming out of the spring sleeve by setting the screw shoulder and the bearing, and reducing the friction between the screw and the valve core assembly, thereby ensuring the normal operation of the electronic expansion valve.
Description
technical field [0001] The invention relates to the technical field of refrigeration, in particular to an electronic expansion valve. Background technique [0002] As one of the four major components of the refrigeration cycle system, the throttle valve controls the flow of refrigerant by changing the throttle cross-section, and plays the role of throttling and reducing pressure. It is usually installed between the condenser and the evaporator. [0003] In the prior art, when the electronic expansion valve is opened instantly, the valve needle and the spring sleeve are subjected to a downward pressure differential force, and the screw will be separated from the inner ring of the bearing and the spring sleeve because there is no axial limit, which will affect the control of the screw. The movement of the valve core assembly and the rotation of the screw itself will generate a lot of friction on the valve core assembly, thereby affecting the normal operation of the electronic ...
Claims
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IPC IPC(8): F16K31/50F16K1/32F16K1/38F16K27/02F16K27/08F16K31/06F25B41/345F25B41/34
CPCF16K31/50F16K1/32F16K1/38F16K27/08F16K31/0655F16K27/0254F16K27/029F25B41/34F25B41/31Y02B30/70
Inventor 贺宇辰许学飞马小红
Owner ZHEJIANG DUNAN HETIAN METAL CO LTD