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Expansion valve and shockproof spring

A technology of anti-shock spring and expansion valve, which is applied in the field of expansion valve, can solve the problems of insensitive response of the valve core, vibration of the valve core, noise, etc., and achieve the effect of low cost

Inactive Publication Date: 2013-07-17
TGK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in such an expansion valve, pressure fluctuations may occur upstream of the valve part where the high-temperature refrigerant is introduced, and if left unattended, the valve core may vibrate and generate noise.
Therefore, in many cases, the method of stabilizing the movement of the spool by imparting spring potential energy to the shaft from the side makes the spool insensitive to the pressure fluctuation.

Method used

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  • Expansion valve and shockproof spring
  • Expansion valve and shockproof spring
  • Expansion valve and shockproof spring

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ］

[0034] In this embodiment, the expansion valve of the present invention is embodied as a thermostatic expansion valve suitable for a refrigeration cycle of an automobile air conditioner. Although the refrigeration cycle is equipped with a compressor for compressing the refrigerant in the cycle, a condenser for condensing the compressed refrigerant, a liquid receiver for separating the condensed refrigerant into gas and liquid, and throttling and expanding the separated liquid refrigerant into a mist and an expansion valve that sends out the mist refrigerant, and an evaporator that cools the air in the vehicle compartment by evaporating the latent heat of evaporation, and the detailed description of the configurations other than the expansion valve is omitted.

[0035] figure 1 It is a cross-sectional view of the expansion valve of the embodiment.

[0036] The expansion valve 1 has a main body 2 formed by subjecting a member obtained by extruding a raw material made of alumin...

Deformed example 1

[0053] image 3 It is a figure which shows the structure of the antivibration spring of the modification of 1st Embodiment. (A) is a perspective view showing the overall structure of the anti-vibration spring. (B) is a plan view showing a state where the anti-vibration spring is inserted into the stepped hole. However, the illustration of the stepped hole and the shaft is omitted.

[0054] In this modified example, a hemispherical protruding portion 70 is provided at the center of the inner surfaces (directly facing surfaces) of the pair of inner spring portions 158 . When the anti-vibration spring of this modified example is inserted into the large-diameter portion 46 , the pair of protrusions 70 come into point contact with the shaft 33 . With such a configuration, even if the shaft 33 is slightly inclined, the point contact state between the protrusion 70 and the shaft 33 can always be ensured, and the flexible support state of the anti-vibration spring is maintained. I...

Deformed example 2

[0056] Figure 4 It is a figure which shows the structure of the anti-vibration spring of another modification of 1st Embodiment. (A) is a perspective view showing the overall structure of the anti-vibration spring. (B) is a plan view showing a state where the anti-vibration spring is inserted into the stepped hole.

[0057] In this modified example, a claw portion 72 (corresponding to a “locking portion”) is formed at an edge of a portion of the anti-vibration spring that is in contact with the large-diameter portion 46 . That is, the claw portion 72 is formed by partially cutting out the upper end edges of the pair of rolled portions 156 and bending them outward. With such a configuration, when the anti-vibration spring is inserted into the large-diameter portion 46, the claw portion 72 is shaped to be caught on the inner wall of the large-diameter portion 46, thereby preventing the anti-vibration spring from falling off. In addition, in this modified example, although th...

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Abstract

The utility model provides a simple and easy shockproof spring suitable for shock prevention of an operation part of an expansion valve at low cost. An expansion valve (1) in one scheme comprises a first channel (13) which is formed to penetrate through a main body (2), with a coolant guiding inlet laterally disposed at one end and a coolant guiding outlet laterally disposed at the other end, a valve opening (16) which is disposed in the middle portion of the first channel (13), a valve core (18) which opens and closes the valve by connecting or leaving the valve opening (16), a power element (3) which is used for generating driving force for opening or closing the valve core (18), a shaft (33) which is supported by the main body and transmits the driving force of the power element (3) to the valve core (18), and a shockproof spring (50) which is disposed between the main body (2) and the shaft (33), provides the shaft (33) with potential energy and sliding resistance. The shockproof spring (50) is formed by bending a belt-shaped plate at multiple parts in the extension direction of the plate.

Description

technical field [0001] The present invention relates to expansion valves, and in particular to the construction of shock-proof springs suitable for shock-proofing the working part of the expansion valve. Background technique [0002] The refrigeration cycle of the air conditioner for automobiles is generally equipped with: a compressor, which compresses the refrigerant in the cycle; a condenser, which condenses the compressed refrigerant; a liquid receiver, which separates the condensed refrigerant into gas and liquid; an expansion valve, which makes the refrigerant The separated liquid refrigerant is throttled and expanded into mist and sent out; and the evaporator evaporates the mist refrigerant, and cools the air in the vehicle interior by the latent heat of evaporation. [0003] As the expansion valve, a temperature formula is used to control the flow rate of the refrigerant sent to the evaporator by sensing the temperature and pressure of the refrigerant on the outlet s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06F16F1/18
CPCF25B2341/0683F25B2500/13F25B41/335
Inventor 佐竹良辅渡边刚金子毅
Owner TGK
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