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Slide valve and refrigeration cycle

A slide valve and valve housing technology, which is applied in the field of slide valves and refrigeration cycles, can solve problems such as system operating efficiency decline, and achieve the effects of improving operating efficiency, excellent operating efficiency, and preventing leakage

Active Publication Date: 2016-09-14
SAGINOMIYA SEISAKUSHO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This type of spool valve has a problem that if the airtightness of the piston that divides the high-pressure chamber and the low-pressure chamber is not maintained, the operating efficiency of the system using the spool valve will decrease.

Method used

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  • Slide valve and refrigeration cycle
  • Slide valve and refrigeration cycle
  • Slide valve and refrigeration cycle

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Embodiment Construction

[0032] Embodiments of the present invention will be described below. figure 1 It is an enlarged view of the main part of the piston of the spool valve of the embodiment, figure 2 It is a figure which shows the 1st example of the fixing part of the fixing screw and the seal in embodiment, image 3 It is a figure which shows the 2nd example of the fixing part of the fixing screw and the seal in embodiment, Figure 4 It is a figure which shows the 3rd example of the fixing part of the fixing screw and the seal in embodiment, Figure 5 It is a figure which shows the slide valve and the refrigeration cycle of embodiment. also, figure 1 (B) is figure 1 (A) A-A direction view.

[0033] First, based on Figure 5 The slide valve 10 and the refrigeration cycle will be described. In addition, the spool valve 10 of this embodiment is an example of a four-way switching valve. The refrigerating cycle in this embodiment is constituted by a slide valve 10 and a pilot valve 20 connect...

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Abstract

The present invention provids a slide valve moves a valve element (5) and switch a flow path of a flow by using differential pressure of a main valve chamber (11A) (high pressure chamber) and a secondary valve chamber (12A) and a piston (3, 3) and a coupling member (4). In the slide valve, leakage of a refrigerant can be prevented when a fixing screw thread member (6) is used for fixing the piston (3) is to a connecting member. A screw thread shaft (62) of the fixing screw thread member is run through a via hole (34a) of a sealing member (34) and a via hole (32a) of a second reinforcing plate (32) respectively, and the screw thread shaft (62) is connected with an internal thread (41b) in a threaded manner. The fixing screw thread member is fixed on the vertical plate (41) (connecting member 4) in a threaded manner, a pressing face (64) of a stepped portion (63) is pressed against the periphery of the via hole (34a) of the sealing member (34). And the periphery of the via hole of the sealing member is pressed into the via hole (32a) of the second reinforcing plate (32), an extrusion part (34b) of the sealing member is formed, and the pressing face (64) of the fixing screw thread member (6) is fixed by the extrusion part in a sealed manner.

Description

technical field [0001] The present invention relates to a slide valve and a refrigeration cycle that control a flow path of a refrigerant such as a heat pump refrigeration cycle. Background technique [0002] Conventionally, as such a spool valve, there is, for example, a spool valve disclosed in JP-A-7-151251 (Patent Document 1). In this slide valve, both ends of a cylindrical valve body are sealed with plugs, the discharge pipe of the compressor is connected to the valve body, and a low-pressure valve connected to the suction pipe of the compressor is formed on the valve seat surface (valve seat) in the valve body. A connection port and two connection ports respectively connected to two heat exchangers across the low-pressure connection port. In addition, a pair of pistons is slidably provided in the valve main body, a high-pressure chamber is formed between the pair of pistons, and an operation chamber is formed between the pistons and the plug body. In addition, the va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/122F16K11/065
CPCF16K11/0655F16K31/122F16K31/1225
Inventor 横田健久铃木龙介上野知之木村宏光冈田聪渡边秀刚小泉怜
Owner SAGINOMIYA SEISAKUSHO INC