Automobile air-conditioning heating power expansion valve

A technology for thermal expansion valve and automobile air conditioner, which is applied in the field of thermal expansion valve, can solve the problem of leakage of temperature-sensing agent in a capsule, and achieve the effect of reducing processing accuracy and sealing performance, reducing cost and low cost.

Inactive Publication Date: 2010-12-29
上海精励汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the present invention needs to prepare a special temperature-sensing agent filling device, and it does not completely avoid the possibility of leakage of the temperature-sensing agent in the bellows. The filling form, filling quality or pressure of the agent

Method used

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  • Automobile air-conditioning heating power expansion valve
  • Automobile air-conditioning heating power expansion valve

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Embodiment Construction

[0028] Please refer to the accompanying drawings for a further description of the present invention.

[0029] As shown in Figure 1, the present invention provides a thermal expansion valve for an automobile air conditioner, which includes a valve body 1. The upper and lower parts of the valve body are respectively provided with an outlet I12, an inlet II13, an outlet III14 and an inlet IV14. The valve body 1 is provided with a The push rod 6, the bottom end of the push rod 6 is placed on a valve ball 7, the valve ball 7 is placed on the valve seat 8, the valve seat 8 is placed on a spring 9, and the spring 9 is placed in the groove of an adjusting bolt 10, The adjusting bolt 10 is screwed in from the bottom of the valve body 1, and the initial pre-tightening force is adjusted through the adjusting bolt 10; the top of the push rod 6 is connected with a sealing cover through a memory alloy spring 3, and the memory alloy spring 3 is fixed on the upper cover 2. In the positioning ...

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PUM

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Abstract

An automobile air conditioning thermal expansion valve is provided, wherein, an upper part and a lower part of the valve body are respectively provided with an outlet I, an inlet II, an outlet III and an inlet IV; a push rod is arranged in the valve body, the bottom end of the push rod is supported on a valve ball which is arranged on a valve seat; the valve seat is arranged on a spring which is arranged in a groove of an adjusting bolt; the adjusting bolt is inserted from the bottom of the valve body; a top end of the push rod is connected with a seal cover through a memory alloy spring; a temperature sensing diaphragm is arranged between the memory alloy spring on the top end of the push rod and the top end of the push rod, the temperature sensing diaphragm and a temperature sensing diaphragm press ring are welded on a boss inside the valve body; an upper end of the push rod is provided with a boss with the diameter larger than that of the other parts of the push rod; or the memory alloy spring is covered on the push rod, the memory alloy spring is supported by the boss on the push rod; a seal bolt is cylindrically screwed into the top part of the valve body. The invention has the advantages of simple structure, reliable temperature sensibility and low cost; the memory alloy spring is used as temperature sensing medium, thereby solving the problem of leakage of the temperature sensing medium.

Description

technical field [0001] The invention relates to a flow control device of a refrigeration system, in particular to a thermal expansion valve applied to an automobile air-conditioning system. Background technique [0002] Since the automotive air-conditioning system has been operating under vibration and bumpy conditions for a long time, the thermal expansion valves used in the automotive air-conditioning system have high requirements on performance such as vibration resistance and reliability. Thermal expansion valves are divided into F-type and H-type according to their shapes. The F-type automotive air-conditioning thermal expansion valve is an external temperature-sensitive throttling control element. It is affected by the contact area, contact tightness and The impact of ambient temperature, and the connecting capillary of the temperature sensing package is easily broken; the temperature sensing conditions, vibration resistance, durability, and adjustment performance of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/14F16K31/70F25B41/06
Inventor 陈江平刘婷婷施骏业
Owner 上海精励汽车科技有限公司
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