Fluid discharge structure for fluid control device

Abstract

A fluid discharge structure for a fluid control device has a simply constructed air bleeding section for bleeding air from a cooling water path and can simply and reliably bleed the air. An air bleeding section (30) adapted for use for fluid discharge and provided to the upper part of a housing (11) of a device has a cock holding hole (31) open in the upper end of the housing, an air bleeding cock (32) slidably held in the cock holding hole (31) and having an outer end (32a) pressed for operation, an air bleeding hole (33) for allowing one longitudinal end of the cock holding hole to be opened to the outside of the housing, and a spring means (25) for constantly urging upward the air bleeding cock to protrude upward a cock outer end. The air bleeding cock and the cock holding hole together form an air bleeding circuit (40) which constantly interrupts the communication between a cooling water path and the air bleeding hole by causing the air bleeding cock to protrude upward and which interconnects the cooling water path and the air bleeding hole when the cock outer end is pressed.

Description

technical field [0001] The present invention relates to a fluid discharge structure of a fluid control device preferably used for exhaust, water discharge, oil discharge, etc. For example, the fluid temperature of a cooling water circuit or the like that cools cooling water of an internal combustion engine (hereinafter referred to as an engine) used in an automobile or the like opens and closes or switches a flow path. Background technique [0002] For example, in a motor vehicle engine, a water-cooled cooling system using a radiator is generally used to cool the engine. Furthermore, in such a cooling system, the temperature of the cooling water introduced into the engine can be controlled by using a thermostat using a thermal expander that adjusts the amount of cooling water circulating on the radiator side. [0003] At present, the following structure is known, that is, in such a cooling system, in order to eliminate the accumulation of gas in the piping when filling the ...

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned conventional structure, a threaded valve is used as a valve for exhausting. Therefore, tools and the like are required for exhausting, and the exhausting operation is troublesome and complicated. In addition, the valve may be damaged due to vibration of the engine or the like. Loose, so that the cooling water is discharged to the outside, or the air enters the cooling water passage, etc.

[0006] In addition, in the threaded structure valve, it is necessary to provide a threaded part on the housing by cutting, etc., and the manufacturing cost is high. In addition, there may be problems such as the sealing O-ring being caught in the thread groove or crossing the passage, etc., and being cut off.

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