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Thermal expansion valve

A thermal expansion valve and thermal technology, which is applied in various thermal expansion valves and thermal expansion valve fields, to achieve the effect of eliminating abnormal noise

Inactive Publication Date: 2014-08-20
ZHEJIANG CHUNHUI INTELLIGENT CONTROL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the more common method in the industry is to increase the damping spring 5 to suppress the vibration of the steel ball seat assembly 4 and the adjustment spring 6. Since the steel ball seat assembly 4 and the damping spring 5 are in clearance fit, the vibration of the steel ball seat assembly 4 cannot be completely avoided. , increasing the damping spring 5 cannot fundamentally solve the abnormal sound of the thermal expansion valve

Method used

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Embodiment Construction

[0016] like figure 2 As shown, the present invention is mainly composed of a thermal head 1, a valve body 2, a valve stem 3, a steel ball seat assembly 4, an adjustment spring 5, and the like. The steel ball seat assembly 4 is composed of a steel ball 41, a steel ball seat 42, and a damping spring 43. The three parts form a whole. The steel ball seat assembly 4 is in interference fit with the valve body hole 21 through the damping spring 43. The steel ball 41. Steel ball seat 42 and damping spring 43 are connected by spot welding.

[0017] It works as follows:

[0018] When the driver suddenly turns on the automobile air-conditioning system, although the valve rod 3 and the steel ball seat assembly 4 may be separated, the three components of the steel ball seat assembly 4, the steel ball 41, the steel ball seat 42, and the damping spring 43, have formed a whole. The damping spring 43 is in interference fit with the valve body hole 21. Through the restraining effect of the d...

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Abstract

The invention discloses a thermal expansion valve, belongs to the technical field of vapor compression-type refrigerating, and is suitable for an automobile air conditioner system. The thermal expansion valve mainly comprises a thermal head 1, a valve body 2, a valve rod 3, a steel ball base assembly 4, an adjustment spring 5 and the like. The thermal expansion valve is characterized in that the steel ball base assembly 4 comprises a steel ball 41, a steel ball base 42 and a damping spring 43. When a driver suddenly starts the automobile air conditioning system, the steel ball 41, the steel ball base 42 and the damping spring 43 constituting the steel ball base assembly 4 have constitute a whole though the valve rod 3 and the steel ball base assembly 4 may disengage, and the damping spring 43 is in interference fit with a valve hole 21. By means of the inhibition function of the damping spring 43, the situation that the steel ball base assembly 4 and the adjustment spring 5 vibrate due to external excitation and disturbance is not prone to occurring, and accordingly the thermal expansion valve cannot sound abnormally.

Description

technical field [0001] The invention relates to a thermal expansion valve, which belongs to the technical field of vapor compression refrigeration and is suitable for various thermal expansion valves in automobile air-conditioning systems. Background technique [0002] As a key component in the automotive air-conditioning system, the thermal expansion valve plays the role of throttling and reducing pressure, regulating flow, and maintaining an appropriate degree of superheat. Its performance directly affects the performance of the air-conditioning system. [0003] The phenomenon of abnormal sound of thermal expansion valve is the first complaint of users in the international automotive air-conditioning industry in recent years. It usually occurs within one minute after the vehicle is started and the air conditioner is turned on. The duration is about 2 to 3 seconds. The reason is that When the driver suddenly turns on the car air conditioning system, if figure 1 As shown, t...

Claims

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Application Information

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IPC IPC(8): F25B41/06F16K47/02F25B41/31
Inventor 徐立中丁炳华於君标王华达沈伟东孙苗杜春飞
Owner ZHEJIANG CHUNHUI INTELLIGENT CONTROL
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