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Thermal expansion valve

A technology of thermal expansion valve and concave part, which is applied in the direction of lighting and heating equipment, fluid circulation arrangement, refrigeration components, etc., and can solve problems such as difficulty in stably controlling the flow rate and affecting the lift of the diaphragm

Active Publication Date: 2019-06-18
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the components of the expansion valve tend to be miniaturized, the miniaturization of the air box head is also an inevitable development trend. However, simply reducing the diameter of the diaphragm will affect the lift of the diaphragm to a certain extent, so that it is difficult to control the flow stably

Method used

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Embodiment Construction

[0023] Thermal expansion valve comprises air box head, valve body and valve stem 20 (referring to Figure 15 ), the air box head and the valve body are fixedly arranged, and the air box head and the valve stem are arranged in cooperation, and the thermal expansion valve can be used for throttling the fluid flow in the air conditioning system.

[0024] refer to figure 1 and figure 2 , figure 1 A schematic structural view of the air box head 40 is shown, figure 2 for figure 1 As shown in the schematic cross-sectional view of the A-A direction, the air box head 40 includes an air box cover 41, an air box seat 42, a diaphragm 43, a transmission piece 44 and a sealing plug 45, and the diaphragm 43 is located between the air box cover 41 and the air box seat 42 and the air box cover 41 and the air box seat 42 are fixedly arranged, such as by welding, the inside of the air box head 40 includes a closed chamber 46 and a pressure equalizing chamber 47, and a diaphragm 43 separate...

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Abstract

The invention discloses a thermal expansion valve. The thermal expansion valve comprises a gas tank head, wherein the gas tank head comprises a gas tank seat, a gas tank cover and a diaphragm, the gastank cover and the gas tank seat are fixedly arranged; the diaphragm is positioned between the gas tank cover and the gas tank seat, the diaphragm comprises a first concave part and a wave part, andthe first concave part is positioned at the middle part of the diaphragm, the wave part is located on the outer side of the first concave part, and the concave direction of the first concave part is opposite to that of the gas tank cover. Through the arrangement, the circumferential diameter of the diaphragm is relatively reduced under the condition that the filling amount is not reduced, the miniaturization of the gas box head is facilitated, and the performance of the thermal expansion valve is relatively stable through the arrangement of the first concave part and the wave part.

Description

technical field [0001] The present invention relates to the field of fluid control. Background technique [0002] The thermal expansion valve is a throttling component commonly used in air-conditioning and refrigeration equipment. It can throttle and reduce the pressure of the liquid refrigerant from the condenser, and adjust the refrigerant sent from the condenser to the evaporator according to the temperature at the outlet of the evaporator. The flow rate of the agent can be adjusted to meet the changing needs of the cooling load. The general principle of the thermal expansion valve to control the flow of refrigerant is: the temperature of the outlet of the evaporator is sensed by the gas box head, and the medium in the gas box head generates a corresponding degree of thermal expansion according to the temperature sensed by the gas box head, and the thermal expansion is used to balance the temperature of the gas. The valve stem connected to the box head generates pressure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06F25B41/31
Inventor 不公告发明人
Owner ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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