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Flow path switching valve and valve seat part for flow path switching valve

A flow path switching and valve seat technology, which is applied in the direction of valve devices, multi-way valves, sliding valves, etc., can solve the problems of labor and time spent on sliding flow path switching valves, skewed valve seat parts, and high manufacturing costs, etc., to achieve Effects of shortening the grinding process, suppressing position shift, and improving quality

Active Publication Date: 2022-07-15
FUJIKOKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the above-mentioned conventional slide-type flow path switching valve, the valve seat member has a kamaboko shape (thick in the center in the front-rear direction and becomes thinner as it gets closer to both ends), so due to the high heat during brazing (for example, 1000 ℃ before and after) influence (thermal expansion, retraction), etc., the valve seat parts are prone to skew and deformation
Therefore, after brazing, that is, it is necessary to carefully cut and grind the valve seat surface of the valve seat member fixed in the narrow housing, and the manufacture of the sliding flow path switching valve requires labor and time. , and the manufacturing cost becomes higher

Method used

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  • Flow path switching valve and valve seat part for flow path switching valve
  • Flow path switching valve and valve seat part for flow path switching valve
  • Flow path switching valve and valve seat part for flow path switching valve

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Embodiment Construction

[0054] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0055] figure 1 It is an overall vertical cross-sectional view showing a first embodiment of the flow-path switching valve of the present invention.

[0056] In addition, in this specification, expressions indicating positions and directions such as up-down, left-right, front-rear, etc. are attached for convenience according to the drawings in order to avoid complicating the description, and do not necessarily mean that they are actually assembled in a cooling and heating system, etc. position and direction in the state.

[0057] In addition, in each drawing, in order to facilitate the understanding of the invention, and for the convenience of drawing, the gaps formed between the components and the isolation between the components are drawn in a larger or smaller size than the dimensions of the components. distance, etc.

[0058] [Four-way switching valve (flow path ...

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PUM

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Abstract

Provided are a flow-path switching valve and a valve seat member for the flow-path switching valve, which can prevent the valve seat member from being warped and deformed due to thermal influence during brazing, and can reduce manufacturing costs. A cylindrical casing (80), a valve seat member (11) arranged in the casing (80), and a sliding valve body (90) sliding on the valve seat member (11), in the The valve seat member (11) is provided with a plurality of circular openings (41) serving as inlets and outlets for fluids, a pipe joint (78) is connected to the plurality of circular openings (41), and the valve seat member (11) is formed of a flat plate-shaped The valve seat panel (21) of the valve seat panel (21) and the support table (31) are formed, the valve seat panel (21) is butted with the sliding valve core (90) and is provided with the plurality of circular openings (41), the support A table (31) supports the valve seat panel (21) within the housing (80).

Description

technical field [0001] The present invention relates to a flow path switching valve suitable for switching flow paths in refrigeration and heating systems such as room air conditioners and vehicle air conditioners, and a valve seat member for the flow path switching valve, the flow path switching valve having: a cylinder type A (cylindrical) casing; a valve seat member disposed in the casing; and a slide valve body that slides on the valve seat member. Background technique [0002] Flow-path switching valves such as a slide-type four-way switching valve and a six-way switching valve are well known. For example, as disclosed in Patent Document 1, it is common that the valve seat member used for the slide-type flow-path switching valve is SUS or the like is used as a raw material, and is made into a kamaboko shape by drawing, rolling, forging, cutting, etc., that is, it has a flat valve seat surface for sliding the sliding valve core, and a section along the inner peripheral s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/065F16K3/30F25B41/20
CPCF16K11/0655F16K3/30F25B41/20
Inventor 田渕健资藤田尚敬森田纪幸
Owner FUJIKOKI MFG CO LTD