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Spring valve

A reed valve and sheet valve technology, applied in the direction of control valve, valve device, functional valve type, etc., can solve the problems of deterioration of durability and sealing performance, deterioration and hardening of rubber material, increase of manufacturing cost, etc. Good performance and durability

Inactive Publication Date: 2007-12-19
MIKUNI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to make the valve seat and the surface of the valve body in contact with the valve plate become the same plane. After the valve seat is formed, the surface in contact with the valve plate needs to be ground, which increases the manufacturing cost.
Also, if rubber-like parts are used, the rubber material will deteriorate and harden when the temperature rises, and its durability and sealing performance will deteriorate
In addition, if a fluororesin layer is provided only on the valve seat formed around the valve hole like existing products, processing such as masking is required, which complicates the manufacturing process

Method used

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Embodiment Construction

[0015] Embodiments of the present invention will be described below with reference to the drawings.

[0016] FIG. 1 is a schematic diagram of a secondary air system using a reed valve according to an embodiment of the present invention. In this embodiment, the secondary air system is used as an example for description, but the system using the reed valve is not limited to the secondary air system, for example, an exhaust system is also possible.

[0017] An intake port 11 of a cylinder head 10 of the engine is provided with an intake pipe 12 , and external air is introduced into the cylinder via an air washer 13 . An exhaust pipe 15 is attached to the exhaust port 14, and the exhaust pipe 15 is connected to an exhaust muffler not shown.

[0018] The exhaust port 14 is provided with a secondary air supply passage 16 for supplying secondary air to the exhaust system. Secondary air is supplied to the secondary air supply passage 16 via the air washer 17 , the air shutoff valve ...

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Abstract

The present invention provides a reed valve and heat resisting property and permanent stability of which are excellent and there is no need to do abrasive machining to the valve sheet installing surface. The structure is provided with the following characters: compressing the valve body (24) provided with a valve port (25) to a whole to form a valve sheet installing surface (24S) provided with a single flat surface; implying the fluoro resin coating to the entire surface of the valve sheet installing surface (24S) to form a fluoro resin membrane (27); fixing one end (23A) of the reed shaped valve sheet (23) to the valve sheet installing surface (24S) by the bolt (26) and making the end block the hole (25); besides, arranging a repelling board (28) which restrains the edge warping of the valve sheet (23) on the valve body (24).

Description

technical field [0001] The invention relates to a reed valve which uses a reed-shaped valve plate to control air inflow. In particular, it relates to a reed valve used in high-temperature conditions such as an air intake system and an exhaust system of an engine. Background technique [0002] In the reed valve, a valve seat made of a rubber-like elastic member is provided around the valve hole to improve the sealing performance when the reed-shaped valve plate closes the valve hole. In addition, there is a proposal to provide a fluororesin layer between the valve plate and the valve seat in order to prevent adhesion between the valve seat and the valve plate (Patent Document 1, Publication No. 54-45223). [0003] However, the valve seat is formed by providing an uneven portion around a valve hole provided on a valve body made of a metal material such as aluminum, and then burning rubber thereon. Therefore, it is difficult to make the valve seat and the surface of the valve...

Claims

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Application Information

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IPC IPC(8): F16K15/16
Inventor 铃木高裕田代素充佐藤刚
Owner MIKUNI CORP
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