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Thermostatic expansion valve

A technology of thermal expansion valve and degree of superheat, applied in the field of thermal expansion valve, can solve the problems of time-consuming and labor-intensive processing of grooves, labor-intensive and time-consuming assembly operations, etc., and achieves improved sealing, excellent refrigerant resistance, and improved creep resistance. Effect

Active Publication Date: 2014-07-16
SAGINOMIYA SEISAKUSHO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a structure requires labor and time to form the groove, and it is necessary to insert the O-ring, so there is a problem that the assembly work is labor-intensive and time-consuming.

Method used

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  • Thermostatic expansion valve
  • Thermostatic expansion valve
  • Thermostatic expansion valve

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Embodiment Construction

[0027] Next, a thermal expansion valve according to an embodiment of the present invention will be described with reference to the drawings. figure 1 is a longitudinal sectional view of the thermal expansion valve of the embodiment, figure 2 It is an enlarged cross-sectional view of a cover member portion of a thermal expansion valve according to an embodiment and a perspective view of a package member, image 3 It is an enlarged cross-sectional view of a sealing member portion of a thermal expansion valve according to an embodiment, Figure 4 It is a figure which shows the state before assembly of the sealing material and leaf spring of the thermal expansion valve of embodiment, Figure 5 It is a figure which shows the assembly state of the seal for sealing of the thermal expansion valve of embodiment, and a leaf spring, Image 6 It is a figure which shows the main part of the refrigeration cycle to which the thermal expansion valve of embodiment is applied.

[0028] exis...

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PUM

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Abstract

The thermostatic expansion valve of the invention is provided with a superheat setting portion in the installing hole of the valve housing, thereby preventing the falling of the cover member while dismounting the packaging member. The thermostatic expansion valve of the invention is provided with an annular concave step portion (161) at the periphery of the opening at the lower end portion of the installing hole (16). The concave step portion (161) is internally provided with an annular packaging member (4) made of polytetrafluoroethylene (PTFE). The outside threads (51a) of the cover member (5) and the inside threads (16b) of the installing hole (16) are combined in a threading manner and are installed to the lower end portion of the installing hole (16). The internal circumference (161a) of the concave step portion (161) is made into an inclined plane, with the internal circumference (161a) and the bottom plane (161b) forming an acute angle. The packing member (4) is gradually combined into the installing hole (16) along the cover member (5) to receive plastic deformation, thereby making one part of packaging member (4) being filled inside the corner (S).

Description

technical field [0001] The present invention relates to a thermal expansion valve for controlling the superheat degree of the refrigeration cycle by automatically adjusting the valve opening degree by sensing the outlet side temperature of the evaporator in a refrigeration cycle. Specifically, it relates to a thermal expansion valve provided with a superheat degree setting unit. Background technique [0002] Conventionally, as a thermal expansion valve provided with a superheat degree setting unit, for example, there are technologies disclosed in JP-A-10-184982 (Patent Document 1) and JP-A-2003-343946 (Patent Document 2). [0003] The thermal expansion valve of Patent Document 1 is a thermal expansion valve using a temperature-sensing cylinder and a diaphragm device, and controls the opening of the valve according to the temperature of the pipe on the outlet side of the evaporator, and automatically adjusts the degree of superheat of the refrigeration cycle to a set value. ....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B41/06
Inventor 高田裕正池田忠显别所直登
Owner SAGINOMIYA SEISAKUSHO INC