JP2000304139A - Line selector valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform selection of a direction of a flow at a branch point of a liquid flowing through a line by operating a direction selector valve at the branch point of a line according to the magnitude of a temperature of the liquid flowing through the line. SOLUTION: This valve is provided with an oscillating valve member 6 situated between a discharge part 3 on the high temperature side and a discharge part 4 on the low temperature side. In the contraction state of an operation member 9 formed of a shape memory alloy and contracted when temperature is high, the valve member 6 is oscillated and inclined to the discharge part 4 side on the low temperature side and closed. Through the force of a return spring 10, energizing is executed to the restoration state of the operation member 9 and in the restoration direction of the operation member 9, and the valve member 6 is oscillated and inclined to the discharge part 3 on the high temperature side and closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a directional control valve at a branch point of a pipeline depending on the temperature of liquid flowing in the pipeline to control the flow direction of the liquid flowing through the pipeline at the branch point. The present invention relates to a pipeline switching valve that can be used.

[0002]

2. Description of the Related Art In recent years, 24-hour baths that can take a bath at any time of the day have become widespread. The bath water circulation device for a 24-hour bath is provided with a circulation line, and a pump, a filter, a sterilizing device, and the like are arranged in the circulation line. Circulate,
It keeps the bath water clean at all times.

The above-mentioned circulation line has a branch point where the line is divided into a plurality of lines, and the branch point is provided with a direction control valve for controlling the flow direction of the bath water. The direction control valve changes the flow direction of the bath water at the branch point of the pipeline. As described above, the branch line is used as a flow for drawing the bath water in the bathtub by the branch point, and by controlling the flow direction of the bath water, a course for keeping the bath water in the bathtub clean at all times is provided. Can be appropriately selected as a closed loop by a branch point, a course for performing cleaning for removing dirt adhering in the circulation pipeline, or the like.

[0004]

Conventionally, the valve at the branch point is a combination of a motor valve using a motor as an actuator and a temperature sensor for measuring the temperature of the liquid flowing through the pipeline. Often done. This is a structure in which when the temperature sensor detects that the temperature of the flowing liquid is higher than a set temperature, the motor valve is driven by a signal from the control circuit to switch the pipeline.

[0005] In this way, it is intended to change the flow direction of the liquid depending on whether the temperature of the liquid is low or high. However, in the arrangement of the components outside the device, various accessories such as wiring and a case are required, which is large and complicated. Therefore,
The entire device is expensive and difficult to repair in the event of a failure.

[0006]

The inventor of the present invention has conducted intensive studies with the aim of solving the above-mentioned problems, and as a result, has found that the present invention relates to a method in which the high-temperature side discharge section and the low-temperature side discharge section are opposed to each other. The valve member is formed of a shape memory alloy, and is closed by tilting the valve member toward the low temperature side discharge portion in the contracted state of the operating member formed of a shape memory alloy and contracting at a high temperature, thereby restoring the operating member. By providing a line switching valve that is closed by tilting the valve member to the high-temperature side discharge portion with a return spring that urges the state and the returning direction of the operating member, the bath water is circulated in the circulation line. And the switching valve for discharging the bath water can be performed without electric drive and computer control for controlling the switch valve, thereby solving the above-mentioned problem.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, the valve body A includes an inflow portion 1 into which bath water flows, a valve member mounting chamber 2 in which a valve member 6 and a base 8 described below are mounted, a high temperature side discharge portion 3 and a low temperature side discharge portion 4. [See FIGS. 1 (A), 1 (B) and 2]. The flow direction of the bath water in the inflow section 1 is orthogonal to the flow direction of the bath water in the high-temperature side discharge section 3 and the low-temperature side discharge section 4.

A high temperature side discharge hole 3a is formed in the high temperature side discharge section 3 on the valve member mounting chamber 2 side, and similarly, the low temperature side discharge section 4 is formed.
A low temperature side discharge hole 4a is formed on the valve member mounting chamber 2 side [see FIGS. 1 (A) and 1 (B)]. The high temperature side discharge hole 3
“a” is formed smaller than the inner diameter of the high-temperature side discharge unit 3, and the low-temperature side discharge hole 4 a is formed smaller than the inner diameter of the low-temperature side discharge unit 4.

The periphery of the high-temperature side discharge hole 3a is formed in a flat shape with a flat surface, and similarly, the periphery of the low-temperature side discharge hole 4a is also formed in a flat shape with a flat surface. Thereby, the close contact with the closing surfaces 6a and 6b of the valve member 6 described later can be ensured. Therefore, the width of the plane around the high-temperature side discharge hole 3a and the low-temperature side discharge hole 4a may be limited to a range corresponding to both the closed surfaces 6a and 6b of the valve member 6.

Next, the direction switching device mainly includes the valve member 6.
, A swing member 7, a base 8, an operating member 9, and a return spring 10. The valve member 6 has a substantially triangular roof shape, and has two inclined closing surfaces 6a and 6b.
Are formed. The valve member 6 is preferably made of a material such as rubber such as silicone rubber or a synthetic resin, and has good adhesion to other members.

Further, a ring-shaped protrusion 6a ₁ and a ring-shaped protrusion 6b ₁ bulging in a ring shape are formed on both of the closing surfaces 6a and 6b (see FIG. 3B). The annular protrusion 6
a ₁ abuts around the high-temperature side discharge hole 3a, and the annular projection 6b ₁ abuts around the low-temperature side discharge hole 4a.
The valve member 6 and the high-temperature side discharge hole 3a or the valve member 6 and the low-temperature side discharge hole 4a are formed by the annular projections 6a ₁ and 6b _1.
The closed state can be further ensured by improving the adhesiveness to the substrate [see FIGS. 4 (A) and 4 (B)].

The swing member 7 is mounted on a base 8 so that the valve member 6 can swing freely. A valve connecting the valve member 6 is provided on the top of a substrate 7a of the swing member 7. A member connecting piece 7b is formed, and oscillating side portions 7c, 7c formed at appropriate intervals on both sides in the width direction of the substrate 7a, and the operating member is provided at a central portion in the width direction of the substrate 7a. Operating member connecting portion 9 for mounting return spring 9 and return spring 10
d, a spring connecting portion 7e is formed [FIG. 1 (A),
(B) and FIG. 3A).

The base 8 is formed with bearing side plates 8b, 8b opposed to both ends in the width direction of the fixed plate 8a. On the fixed plate 8a, a lower connecting portion for connecting the operating member 9 and the return spring 10 respectively. 8c and 8d are formed (see FIG. 3A). The fixing plate 8a is fixed to a bottom portion of the valve body A via a fixing tool such as a screw.

First, the valve member 6 is connected to the valve member connecting piece 7b of the swing member 7. Specifically, an insertion hole 6c into which the valve member connecting piece 7b is inserted is formed on the bottom surface side of the valve member 6, and the valve member connecting piece 7b is inserted into the insertion hole 6c. The valve also member 6 and the valve member connecting pieces 7b through holes 6d and the through hole 7b ₁ are formed respectively, the pin 11 both through holes 6d,
Through the 7b _1, it is connected and the valve member 6 and the swing member 7.

The swinging side 7c of swing member 7, 7c is bearing plate 8b of the base 8, are mounted inwardly of 8b, rocking side 7c, pivot shaft through hole 7c of 7c _1, 7c _The pivot shaft 13 penetrates through the through holes 8b ₁ , 8b ₁ for the pivot shaft of the bearing side plates 8b, 8b, and is connected to the base 8 so that the swing member 7 can swing. .

Here, together with the swing member 7, the valve member 6
Has a high-temperature side discharge hole 3a and a low-temperature side discharge hole 4a on both sides of the base 8 which are tilted. More specifically, the valve member 6 is connected to the high-temperature side discharge port 3.
In this state, the closing surface 6a swings and tilts so that the closing surface 6a comes into contact with the flat surface around the high-temperature side discharge hole 3a substantially in parallel (see FIG. 1A).

Similarly, the valve member 6 is connected to the low temperature side discharge port 4a.
The closing surface 6b is tilted to the side and is in contact with the flat surface around the low-temperature side discharge portion 4a in a substantially parallel state. The inclination angles of the two closing surfaces 6a and 6b of the valve member 6 are set so as to be vertical as described above when swinging and inclining toward one of the discharge portions. Similarly, the base 8 is fixed at a position where the high-temperature side discharge hole 3a or the low-temperature side discharge hole 4a can be properly closed when the valve member 6 swings and tilts [FIG. reference〕.

A metal fitting 12 is embedded and reinforced in the valve member 6 [FIGS. 2B and 3A].
Etc.]. The insertion hole 6c of the valve member 6 is formed with a margin slightly larger than the valve member connecting piece 7b of the swing member 7. As a result, the valve member connecting piece 7b can swing in the swinging inclination direction in the insertion hole 6c, and the valve member 6 can swing slightly with respect to the swing member 7 and becomes flexible (see FIG. 5).

As a result, the valve member 6 oscillating and inclined with respect to the base 8 together with the oscillating member 7 comes into contact with the flat surface around the high-temperature side discharge hole 3a, and only the valve member 6 is moved with respect to the oscillating member 7. By slightly swinging and becoming flexible, the adhesion between the closed surface 6a and the flat surface around the high-temperature side discharge hole 3a can be further improved. This can further improve the adhesion between the flat surface around the low-temperature side discharge hole 4a of the valve member 6 and the closing surface 6b.

Next, the operating member 9 is formed of a shape memory alloy and has a coil spring shape. The operating member 9 contracts at high temperatures. More specifically, when the temperature of the bath water is an appropriate temperature (low temperature) of about 40 ° C., the initial length (natural length) is obtained, and the bath water is heated by a heater to about 70 °.
When it becomes hot water of C, it contracts and becomes shorter.

The operating member 9 is not particularly shown except for the coil spring shape, but there are a zigzag folded shape, a helical shape, and the like.
The shape is not limited as long as it can be properly mounted in the valve member mounting chamber 2 of the valve body A. Return spring 10
A normal coil spring is used, but any other type may be used as long as it can be properly mounted in the valve member mounting chamber 2 such as a torsion spring or a leaf spring.

The operating member 9 and the return spring 10 are mounted on the swinging member 7 and the base 8. Specifically, the operating member 9 is vertically mounted between the operating member connecting portion 7d of the swing member 7 and the lower connecting portion 8c formed on the fixed plate 8a of the base 8, and the spring connecting portion is provided. 7e and lower connecting part 8d
The return spring 10 is mounted in the up-down direction between [Fig.
(A), (B) and FIG. 3 etc.).

The operating member 9 is always at the initial length (the length in a state in which the operating member 9 is not contracted), and the swing member 7 is inclined toward the high-temperature side discharge section 3 side. 6 also inclines toward the high temperature side discharge unit 3 side. Then, the closing surface 6a of the valve member 6 closes the high-temperature side discharge hole 3a,
The bath water flowing into the inflow section 1 of the valve body A is at an appropriate temperature (low temperature)
When the operating member 9 changes from hot water to hot water, the operating member 9 contracts in the longitudinal direction, and the swinging inclination direction of the swinging member 7 is changed.

At this time, by the action of the return spring 10 mounted on the opposite side of the operation member 9, the swinging inclination direction of the swinging member 7 can be changed quickly and reliably. The tilting direction of the valve member 6 is changed together with the rocking member 7 so that the high-temperature side discharge hole 3
a, the closing surface 6a of the valve member 6 is separated from the high temperature side discharge hole 3a.
Is opened, and the closing surface 6b of the valve member 6 closes the low temperature side discharge hole 4a.

Thus, it is possible to change the flow direction of the appropriate temperature (low temperature) bath water and hot water in the pipeline. FIG.
(A), an appropriate temperature (low temperature) bath water flows from the inflow section 1,
The valve member 6 closes the high temperature side discharge part 3 side, and the state where the bath water flows to the low temperature side discharge part 4 side is indicated by an arrow. FIG.
(B) shows the state in which hot water flows from the inflow section 1, the valve member 6 closes the low temperature side discharge section 4 side, and the hot water flows to the high temperature side discharge section 3 side by arrows.

FIGS. 6 and 7 show an embodiment in which the pipeline switching valve of the present invention is incorporated in a circulation pipeline of a 24-hour bath apparatus B. The circulation pipeline includes a pump 14, a heater 15,
A filter 16 and a sterilizer 17 are incorporated. Then, only the appropriate temperature bath water is sent out to the bathtub by the circulation line of the bath device B for 24 hours, and an abnormality occurs in the device for some reason, the temperature of the bath water in the circulation line suddenly rises and the hot water When the temperature is changed to, the hot water is removed to the outside of the bathtub so that the temperature of the bathwater in the bathtub is always kept at an appropriate temperature.

FIGS. 6 (A) and 6 (B) show the case where the bath water of a suitable temperature circulating in the circulation pipe flows in from the inflow section 1 and the valve member 6 is shown.
Shows a state in which the high-temperature side discharge port 3a of the high-temperature side discharge section 3 is closed, and the bath water is discharged from the low-temperature side discharge section 4a of the low-temperature side discharge section 4 into the circulation pipe and further sent to the bathtub. Things. 7 (A) and 7 (B) show that hot water generated due to some abnormality in the circulation pipe flows from the inflow portion 1, and the valve member 6 closes the low-temperature side discharge hole 4a, and Indicates a state in which the water is discharged from the high temperature side discharge hole 3a to the outside of the bathtub without returning to the circulation pipeline and the bathtub.

[0028]

According to the first aspect of the present invention, the swingable valve member 6 is provided between the high-temperature side discharge section 3 and the low-temperature side discharge section 4 which oppose each other. In the contracted state, the valve member 6 is closed by swinging and tilting toward the low temperature side discharge unit 4 side, and the restored state of the operation member 9 and the operation member 9
The valve member 6 is closed by swinging and tilting the valve member 6 to the high temperature side discharge portion 3 by the return spring 10 urged in the restoration direction of the two discharge portions in the valve body A. The switching control of the flow of the bath water to the bath water can be performed by changing the temperature of the bath water.

That is, the operating member 9 expands and contracts according to the temperature of the bath water, and the tilting direction of the valve member 6 is changed by the operating member 9, so that the closing of the two discharge portions is switched by the temperature of the bath water. The flow of bath water can be switched. Thereby, the flow control of the bath water in the circulation line of the bath water is as follows.
The operation can be performed only with the valve without relying on an external control mechanism, the structure can be simplified, and the device can be provided at a low price.

Next, a second aspect of the present invention provides a valve body A having an inflow portion 1, a high temperature side discharge portion 3, and a low temperature side discharge portion 4 opposed to the high temperature side discharge portion 3, Side discharge unit 3
And a valve member 6 that closes the discharge portion positioned on the swinging inclined side and a valve member 6 that contracts at a high temperature, and in the contracted state, moves the valve member 6 at a low temperature side. A pipe comprising an operating member 9 for oscillating and tilting the discharge part 4 and a return spring 10 for urging the valve member 6 to oscillate and tilt toward the high temperature side discharging part 3 in accordance with the restoration of the operating member 9. By using the path switching valve, the switching control of the flow of the bath water to the high-temperature side discharge section 3 and the low-temperature side discharge section 4 of the valve body A can be performed by changing the temperature of the bath water, and the valve member thereof 6
Switching in the swinging inclination direction can be performed quickly.

In detail, the effect of the valve member 6 is changed by the operating member 9 so that the tilting direction of the valve member 6 is changed.
a, 6b closes either the high-temperature side discharge part 3 or the low-temperature side discharge part 4 to control the flow direction of bath water, and the return spring 10 swings to the opposite side of the mounting side of the operation member 9 Since the valve member 6 is urged to be inclined, the operation of the operating member 9 is promoted to be smooth, and the operation member 9 is contracted and the swinging inclination direction of the valve member 6 is quickly changed. Can be made.

Next, a third aspect of the present invention is directed to the first or second aspect.
In the above, the valve member 6 has two inclined closing surfaces 6a,
6b, the closing surfaces 6a and 6b are configured as a pipeline switching valve having a triangular roof shape, so that the shape of the valve member 6 can be simplified, and a high temperature when the rocking inclination occurs. The contact state with the side discharge unit 3 or the low temperature side discharge unit 4 can be improved.

Next, according to a fourth aspect of the present invention, in the third aspect, the annular projections 6a ₁ , 6a,
By 6b ₁ has a tube-path switching valve formed by forming, be該輪shaped projection strip 6a _1, 6b ₁ is Naru good contact with the high temperature-side discharge section 3 or the low-temperature-side discharge section 4 sealability Can be.

Next, a fifth aspect of the present invention is directed to the first, second, and third aspects.
In 3 or 4, the operating member 9 is formed in a pipe switching valve characterized in that the operating member 9 is formed in a coil shape, so that the operating member 9 can be smoothly expanded and contracted and the operation in the flow direction of the bath water is good. Can be

Next, the invention of claim 6 is based on claims 1, 2,
In 3, 4, or 5, the valve member 6 is mounted on the swing member 7, and the valve member 6 is a pipe line switching valve that can slightly swing with respect to the swing member 7,
The valve member 6 becomes flexible with respect to the swinging member 7, and the contact state between the closing surfaces 6a and 6b of the valve member 6 and the high-temperature side discharge section 3 or the low-temperature side discharge section 4 is always maintained substantially parallel to the closing state. The condition can be improved.

[Brief description of the drawings]

FIG. 1A is a vertical sectional front view in which the valve member of a pipeline switching valve closes a high-temperature side discharge portion and flows appropriate temperature bath water by arrows, and FIG. Vertical cross-sectional front view with arrows showing how hot water flows when the side discharge section is closed

FIG. 2A is a longitudinal sectional side view of the operation member according to the present invention, and FIG.

FIG. 3A is an exploded perspective view showing a swing mechanism of a valve member. FIG. 3B is a perspective view showing a swing mechanism of a valve member.

FIG. 4A is a cross-sectional view of a main part showing a closed state of a valve member and a discharge part. FIG. 4B is an enlarged cross-sectional view of a main part of FIG.

FIG. 5 is a state diagram of a structure in which a valve member is flexible with respect to a swing member.

FIG. 6 (A) is a cross-sectional view of a main part of a pipeline switching valve showing a state in which a suitable temperature of bath water flows into an inflow portion and flows to a low temperature side discharge portion side. Schematic diagram showing the state of circulating bath water of appropriate temperature at

FIG. 7A is a sectional view of a main part of a pipe switching valve showing a state in which hot water flows into an inflow section and flows to a high-temperature side discharge section. FIG. 7B is a cross-sectional circulation pipe between a bath apparatus and a bathtub for 24 hours. Schematic diagram showing the state of discharging hot water out of the bathtub on the road

[Explanation of symbols]

A: Valve body 3: High-temperature side discharge section 4: Low-temperature side discharge section 6: Valve member 6a: Closed surface 6b: Closed surface 6a ₁ : Ring-shaped protrusion 6b ₁ : Ring-shaped protrusion 7: Oscillating member 9: Operating member 10 … Return spring

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazushi Yamamoto 3-1-1 Kyobashi, Chuo-ku, Tokyo Snake eyes Inside Sewing Machine Industry Co., Ltd. (72) Inventor Chodai Kodai 3-1-1 Kyobashi, Chuo-ku, Tokyo Janome Sewing Machine Co., Ltd. F-term (reference) 3H057 AA06 BB02 BB11 BB32 CC13 DD13 EE01 FA01 FA17 FA18 FA22 FC04 FD19 HH03 HH12 HH21 3H067 AA02 BB02 CC02 CC11 CC32 DD04 DD12 DD35 EA01 EA24 EA25 GG15 ED20

Claims (6)

[Claims] An oscillating valve member is provided between an opposed high-temperature side discharge part and a low-temperature side discharge part, and the valve member is formed in a contracted state of an operating member formed of a shape memory alloy and contracting at a high temperature. The valve member is closed by swinging and tilting toward the low-temperature side discharge portion, and the valve member is tilted and tilted toward the high-temperature side discharge portion by a return spring that urges the operating member in the restored state and the returning direction of the operating member. A pipeline switching valve, characterized in that: 2. A valve body having an inflow portion, a high-temperature side discharge portion, and a low-temperature side discharge portion facing the high-temperature side discharge portion,
A valve member configured to be swingable between the high-temperature side discharge part and the low-temperature side discharge part, and to close a discharge part located on the side of the rocking inclination;
An operating member formed of a shape memory alloy and contracting at a high temperature and swinging and tilting the valve member to the low temperature side discharge portion in the contracted state; And a return spring for biasing the pipe so as to be inclined. 3. The pipeline switching valve according to claim 1, wherein the valve member has two inclined closing surfaces, and the closing surface has a triangular roof shape. 4. The pipeline switching valve according to claim 3, wherein annular projections are formed on the two closed surfaces. 5. The pipeline switching valve according to claim 1, wherein the operating member has a coil shape. 6. The method according to claim 1, 2, 3, 4, or 5,
A pipe switching valve, wherein the valve member is mounted on a swing member, and the valve member is slightly swingable with respect to the swing member.