JPS62188877A - Valve - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to valves.

The publication ``Fluid Logic in Simple Terms'', written by Michael G. Moylan, describes a device that uses a closed coil spring as a moving part to control fluid flow. Fluid is supplied to the spring through the restrictor, and while the coil of the spring is closed, no flow is possible and a pressure output is obtained. When a force is applied to deflect the spring and open the coil, there is no output because fluid flows out of the coil faster than it can be displaced through the restrictor.

The coil spring of this known device acts as the basic on/off element.

U.S. Pat. No. 3,513,874 describes a fluid flow control device that includes a housing having a fluid inlet and a fluid outlet spaced from the fluid inlet. A compression spring is contained within the housing between the inlet and outlet. An adjustment screw is arranged to apply an axial force to one end of the compression spring to vary the spacing between the individual coils of the spring and thus the resistance to fluid flow from the inlet to the outlet. This known fluid flow control device is regulated by screw-like mechanical means.

Moreover, this flow control device only controls a single flow and cannot distribute flow along different flow lines.

It is an object of the present invention to have a coil spring for regulating the flow rate of fluid passing therethrough, and a solenoid-like means is provided for applying an axial force to the coil spring in a degree proportional to the current applied to the solenoid. Our goal is to provide a valve that is designed to meet the needs of our customers.

Another object of the invention is to provide a valve having a coil spring that regulates the flow of fluid passing between two outlets.

According to one feature of the invention, the valve includes a housing having a fluid inlet and a fluid outlet spaced from the inlet, and a coil spring contained within the housing to control fluid flow from the inlet to the outlet. , movable means for applying an axial force to the coil spring to vary the spacing between the individual coils and thus vary the resistance to fluid flow from the inlet to the outlet, the moving means comprising a core and a field. A solenoid having a coil whose core is adapted to apply a force to a coil spring proportional to the current applied to the field coil of the solenoid.

According to another feature of the invention, the valve comprises a housing having an inlet for a fluid and two outlets for said fluid, each spaced apart from said inlet, and adapted to control the flow rate of said fluid from said inlet to said associated outlet. , for applying an axial force on the coil springs associated with each outlet and varying the spacing between the individual coils of each coil spring, thereby varying the resistance to fluid flow from the inlet toward the associated outlet. consisting of a movable means of transportation.

Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: FIG.

As shown in FIG. 1, the valve 1 includes a housing 2, and a manifold block 4 is attached to one end of the housing. This manifold block 4 has an inlet 6
and an exit 8 spaced apart from the population 6.

A coil spring 10 is housed within the housing 2 , the coil of which surrounds the outlet 8 .

A core 12 forming part of a solenoid is adjacent to the coil spring 10, and a field coil 14 of the solenoid is adjacent to the coil spring 10.
surrounds housing 2.

In use, when the coil of spring 10 opens as shown, fluid from inlet 6 passes through the coil and exits manifold block 4 through outlet 8. When it is desired to adjust the flow rate of fluid passing through the pulp 1, the current to the solenoid field coil 14 can be varied. For example, when it is desired to limit the flow rate, core 12 is moved to the right as shown, compressing spring 10 and bringing adjacent coils closer together.

In this way, the coil spring 10 provides increased resistance to fluid flow from the inlet 6 to the outlet 8. Ultimately, the current flow to the solenoid coil 14 can be such that the core 12 closes the coil and thus prevents fluid flow from the inlet 6 to the outlet 8.

Referring now to FIG. 2, valve 21 is connected to housing 22.
and a manifold 2 at one end of the housing 22.
4 is installed. Manifold block 24 is inlet 2
6 and an outlet 28 spaced apart from the inlet 26. The housing 22 has a second outlet 27 at the opposite end.

Two coil springs 30 are housed within the housing 22, each spring being associated with an outlet 27,28. The coil of each spring 30 has a respective outlet 2
7. Encircle 28. Housing 2 between springs 30
A core 32 forming part of the solenoid is also disposed within the housing 2, and a field coil 34 of the solenoid is disposed within the housing 2.
Surround 2.

When the core 32 is in the position shown in use, fluid 26 passes through the housing 22 from the inlet 26, then through the coil of the spring 30 on the left side shown, and through the outlet 2.
It is clear that it flows from 7.

The coil of the spring 30 interlocking with the outlet 28 is connected to the core 32.
Since the outlet 28 is closed, no fluid can exit the outlet 28.

When the field coil is energized, each spring 30
The core 32 can be moved to change the closeness of the coils to change the flow of fluid through each outlet 26,27.

In both embodiments described above, the spring 10.30 can be formed from a plastic material or a plastic-coated material. Alternatively, springs may be manufactured from stainless steel in many processes that control corrosive fluids. However, the use of steel springs requires the use of square cross-section wire to seat the interference fit and ensure fluid-tight contact between adjacent coils.

It has been found that using a solenoid core of a suitable material, such as a high frequency metal, the flow characteristics through the pulp can be made substantially linear over the desired flow range by careful selection of supply pressure and component dimensions. Although compression springs are used in the embodiments described above, extension springs can also be used. When using compression springs, it has been found effective to use a sealing compound to coat the spring coil.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of a valve according to the present invention, and FIG. 2 is a schematic cross-sectional view of a proportional double-ended pulp according to the present invention. 6...Inlet 8...Outlet 10...Coil spring 12...Core 14...Engraving of field coil drawing (no change in content) FIG, 2 Procedural amendment (method) % formula% 1 , Indication of the case Patent Application No. 241150 of 1985 Ibachi 2, Name of the invention Valve 3, Person making the amendment Relationship to the case Applicant 4, Agent

Claims (5)

[Claims] (1) a housing having a fluid inlet and a fluid outlet spaced apart from the inlet, a coil spring housed within the housing to control fluid flow from the inlet to the outlet, and varying the spacing between the individual coils; , and movable means for applying an axial force to a coil spring so as to vary the resistance to fluid flow from the inlet to the outlet, the moving means being a solenoid having a core 12 and a field coil 14. A valve characterized in that the core 12 applies a force to the coil spring 10 that is proportional to the current applied to the field coil 14 of the solenoid. (2) a housing having a fluid inlet and a fluid outlet spaced apart from the inlet; a coil spring housed within the housing to control fluid flow from the inlet to the outlet; and a coil spring having a spacing between the individual coils. and movable means for applying an axial force to the coil spring so as to vary the resistance to fluid flow from the inlet to the outlet. A valve characterized in that it has an interlocking coil spring 30 for controlling the flow rate of fluid through the interlocking outlets 27, 28. (3) The moving means is a solenoid having a core 32 and a field coil 34, and the core 32 is housed in the housing 22 and applies an axial force to each coil in proportion to the current applied to the field coil 34. Claim 2, characterized in that the coil spring 30 is added to the spring 30, and is arranged so that when one coil spring 30 gradually closes, the other coil spring 30 gradually opens. Valves listed. (4) The valve according to claim 1, 2 or 3, wherein the spring 30 is made of a plastic material. (5) The valve according to claim 1, 2 or 3, wherein the spring 30 is coated with a plastic material.