JPH07139001A - Branch plug - Google Patents

Abstract

PURPOSE:To prevent hot water from flowing into a water treating device, by providing a thermal deforming member which is deformed when hot water having a higher temperature than a specified one flows in from the faucet so that a changeover member of the water path may be set to the first position. CONSTITUTION:A branch plug 2 is composed of a branch plug body 4, and a cock 5, a torsion spring 8, etc., contained in the branch plug body 4 so as to freely slide and rotate. The first path 13 of the branch plug 2 is connected to the faucet of city water and the second path 14 and the third path 15 are connected to the supply side and the return side of a water treating device respectively. When the cock 5 is set to the second position and hot water having 40 deg.C or higher temperature flows in from the faucet of city water and the temperature the torsion spring 8 reaches 40 deg.C or higher, the spring 8 is deformed and the spring 8 rotates the cock 5 in accordance with the deformation so as to set the cock 5 to the first position 38 and discharge the hot water from the fourth path 16 without passing through the water treating device. Accordingly, the branch plug prevents the inflow of hot water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch plug that allows water from a faucet to flow out through a water treatment device such as a water purifier or a water conditioner.

[0002]

2. Description of the Related Art A water treatment device such as a water purifier or a water conditioner is generally used by connecting to a faucet through a branch plug. Then, the water treatment device obtains treated water by treating the tap water such as purification or water conditioning, and causes the treated water to flow out from the outlet of the branch plug. In addition, by changing the rotation position of the cock housed inside the branch tap, tap water from the tap can be directly discharged from the outlet without passing through the water treatment device. A hot water supply device for warming the tap water may be provided on the upstream side of the tap to supply tap water or hot water selectively from the tap.

[0003]

By the way, in the water treatment apparatus, the performance of the internal storage member such as the filter may be deteriorated or deteriorated when hot water is introduced.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a branch plug capable of preventing hot water from flowing into a water treatment device from a faucet.

[0005]

In order to achieve the above object, the present invention provides a first inflow port through which water flows from a faucet,
A supply port for supplying the water inflowing from the first inflow port to the water treatment device, a second inflow port into which the water treated by the water treatment device inflows, the first inflow port and the A branch plug body having an outlet for discharging water flowing in from a second inlet to the outside, and a branch plug body slidably provided in the branch plug body and being set to the first position The first inflow port and the outflow port are communicated with each other, the communication between the first inflow port and the supply port is blocked, and the first inflow port and the supply port are set by setting the second position. A passage switching member for communicating with the first inlet and the outlet, and an operation member for switching the passage switching member to the first position or the second position. In the branch tap, the temperature of the water flowing in from the first inflow port is a predetermined temperature. Characterized in that the passage switching member urges said passage switching member by thermal deformation is provided a thermal deformation member for setting the first position when it is above.

[0006]

According to this structure, when the passage switching member is set to the second position, if hot water having a temperature higher than the predetermined temperature flows in from the faucet and the temperature of the heat deforming member becomes higher than the predetermined temperature, The thermal deformation member recovers its shape and sets the passage switching member to the first position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A branch plug according to an embodiment of the present invention will be described below with reference to the drawings. In the figure, tap water or hot water is selectively sent to the tap 1 from the upstream side. When the tap of the tap 1 is opened, tap water or hot water flows out from the outlet. I am trying. A branch plug 2 is connected to the water faucet 1. A water treatment device 3 such as a water purifier or a water conditioner is connected to the branch plug 2.

The branch plug 2 includes a branch plug body 4, a cock (passage switching member) 5 slidably and rotatably housed in the branch plug body 4, a shaft-shaped spacer 6, and a constant flow restrictor 7. The torsion spring 8 is generally configured. Branch plug body 4
Is composed of a bottomed tubular main body tubular portion 9 and a lid 12 attached to an opening 10 of the main body tubular portion 9 with a bolt 11.

The main body tube portion 9 has first, second, third, and fourth passages that communicate the inside and the outside (each of which is a first inlet, a supply inlet, a second inlet, and an outlet). Corresponding.) 13,
14, 15, 16 are formed. Second and third passages 14 and 15
Are arranged in this order from a bottom portion (hereinafter, referred to as a cylinder bottom portion) 17 of the main body cylinder portion 9 toward the opening 10. 1st, 4th
The passages 13 and 16 are provided at a third portion in a circumferential portion (hereinafter, referred to as a lever side passage forming portion) 18 of the main body tubular portion 9 forming the third passage.
The passages 15 are provided orthogonally to each other and face each other.

The first passage 13 is connected to the water faucet 1, and the second and third passages 14 and 15 are the supply side and the return side 3 of the water treatment device 3.
It is connected to a and 3b respectively. A hole 19 in the center of the lid 12
Are formed. A protrusion 20 is formed on one end side (right side in FIG. 1) of the cock 5. The protrusion 20 is inserted into the hole 19 and the tip side thereof projects outside the lid 12. In this protrusion 20,
A lever 22 serving as an operating member is attached by a bolt 21, and the cock 5 can be rotated in the same direction by rotating the lever 22 in the arrow R direction in FIG. The lid 12 has a substantially arc-shaped stopper that is concentric with the hole 19.
23 is formed to project. Lever to this stopper 23
22 is locked so that it is prevented from rotating more than a predetermined amount.

In the portion of the cock 5 desired to the lever side passage forming portion 18, there is provided a substantially C-shaped groove 24 having a length for covering the first, third and fourth passages 13, 15, 16 in the circumferential direction. It is formed along. The portion of the cock 5 that is left in the portion facing the lever-side passage forming portion 18 by forming the substantially C-shaped groove 24 is hereinafter referred to as a remaining portion 25. A first hole 27 is formed in the center of an end portion (hereinafter, referred to as a cock inner end portion) 26 of the main body tubular portion 9 that faces the bottom portion 17 of the tubular body. A second hole 28 is connected to the first hole 27. The inner diameter of the second hole 28 is smaller than that of the first hole 27, and a step portion 29 is formed at the connecting portion between the second hole 28 and the second hole 28. A notch (hereinafter referred to as a cock inner end notch) 30 extending in the circumferential direction is formed on the outer peripheral wall of the cock inner end portion 26, and one end of the notched portion of the outer peripheral wall of the cock inner end portion 26 is formed. The length from the side (hereinafter, referred to as the notched first end portion) 31 to the other end side (hereinafter, referred to as the notched second end portion) 32 is a predetermined length. A conduction path 33 is formed in the cock 5. One end side of the conduction path 33 is opened to the remaining portion 25, and the other end side is opened to the second hole 28. The constant flow restrictor 7 is fitted in the second hole 28.

A hole (hereinafter referred to as a cylinder bottom hole) 34 is formed in the center of the cylinder bottom portion 17. A substantially cylindrical spacer 6 is interposed between the step 29 of the first hole 27 and the bottom 35 of the cylinder bottom hole 34. One end side and the other end side of the spacer 6 are inserted into the step portion 29 of the first hole 27 and the cylinder bottom hole 34, respectively. Four notches 36 are formed at one end of the spacer 6 in the circumferential direction at predetermined intervals so that they can communicate with the second passage 14. Inner end 26 of spacer 6
A plurality of elongated holes 37 extending in the longitudinal direction of the cock 5 are formed at a predetermined interval in the circumferential direction in a portion between the cylindrical bottom portion 17 and the cylindrical bottom portion 17.

When the lever 22 is not operated,
As shown in FIGS. 1 to 5, the groove 24 faces the first, third, and fourth passages 13, 15, and 16 so that the passages of the first passage 13, the groove 24, and the fourth passage 16 are secured. Water from the faucet 1 directly flows out from the fourth passage 16 without passing through the water treatment device 3. In this embodiment, this position of the cock 5 is the first position 38.

When the lever 22 is rotated 90 ° in the direction of arrow R in FIG. 3, the cock 5 is set as shown in FIGS. 7 to 10, and the first passage 13, the conducting passage 33, the constant flow restrictor 7 and the spacer are provided. The cutout 36 of FIG. 6, the internal notch 30 of the cock, and the flow path of the second passage 14 are secured so that the water from the water faucet 1 is supplied to the water treatment device 3, and the groove 24 has the third and fourth passages 15. , 16 to secure the flow paths of the third passage 15, the groove 24, and the fourth passage 16 so that the treated water from the water treatment device 3 flows out from the fourth passage 16. In this embodiment, this position of the cock 5 is the second position 39. When water is supplied to the water treatment device 3, in addition to the constant flow restrictor 7, the notch 36 of the spacer 6, and the cock inner end notch 30, the constant flow restrictor 7, the internal space of the spacer 6, and the long hole 37. A part of the water flows into the second passage 14 through the flow path.

The inner end portion 26 of the cock and the bottom portion 17 of the spacer 6 are formed.
The portion between and is a torsion spring 8 made of shape memory alloy.
(Thermal deformation member) is fitted. Torsion spring 8
Is composed of a coil-shaped spring main body 40, and a first shaft portion 41 and a second shaft portion 42 formed on one end side and the other end side of the spring main body portion 40 so as to extend in the longitudinal direction of the spring main body portion 40. ing. The torsion spring 8 has a temperature higher than a predetermined temperature (40 ° C. in this embodiment).
As shown in, the second shaft portion 42 is at a position rotated by a predetermined angle with respect to the first shaft portion 41, and the steady temperature (in this embodiment, 35
(° C) and below, as shown in FIG. 5, the first shaft portion 41 and the second shaft portion 42
The shapes are memorized so that and are located on substantially the same straight line.

The first shaft portion 41 of the torsion spring 8 is fixed to the main body cylinder portion 9, and when the lever 22 is in the state of FIGS. 7 and 8, the second shaft portion 42 is at a steady temperature. As shown in FIG. 11, it abuts against the notch second end portion 32, and by being deformed, the notch second end portion 32 is pressed in the arrow direction to rotate the cock 5 in the arrow T direction in FIG. .

In the branch plug 2 configured as described above, when the lever 22 is not operated, as described above, the cock 5 is used.
Is set to the first position 38, and tap water from the tap 1 flows out through the fourth passage 16.

By rotating the lever 22 by 90 ° in the direction of arrow R, the cock 5 is moved to the second position 39 as described above.
Is set to. When water flows in from the water faucet 1 in this state, the water is supplied to the water treatment device 3 through the first passage 13, the conducting passage 33, the spacer 6 notch 36, the cock inner end notch 30 and the second passage 14. Then, water treatment such as purification is performed in the water treatment device 3. The treated water obtained in the water treatment device 3 is the third passage 1
5, outflow from the fourth passage 16 through the groove 24.

When the cock 5 is set to the second position 39, if hot water of 40 ° C. or more flows in from the tap 1 and the torsion spring 8 reaches 40 ° C. or more, the torsion spring 8 is deformed. It will be. Then, with the deformation, the torsion spring 8 rotates the cock 5 in the arrow T direction to rotate the cock 5.
To the first position 38. Then, the hot water directly flows out from the fourth passage 16 without passing through the water treatment device 3.
Therefore, the functional deterioration of the filter and the like caused by the hot water flowing into the water treatment device 3 is not caused. Further, since the branch plug 2 prevents the hot water from flowing into the water treatment device 3, it is not necessary to provide a hot water prevention mechanism in the water treatment device 3, so that the water treatment device 3 is not enlarged.

In this embodiment, the shape memory alloy is used as the material of the heat deformable member, but the material is not limited to this, and for example, bimetal or shape memory resin may be used as the material of the heat deformable member. . Further, although the heat-deformable member of the present embodiment has the shape of a coil spring, it may have another shape, that is, it deforms at a predetermined temperature, which causes the cock 5 to move to the first position 38. The heat deformable member may have any shape as long as it is set to.

Further, in this embodiment, the water passage is switched by rotating the cock 5, but the invention is not limited to this. For example, by sliding the cock 5 in the axial direction, the water A spool valve that switches the passage may be used.

[0022]

EFFECTS OF THE INVENTION Since the present invention is the branch plug configured as described above, when the passage switching member is set to the second position, hot water having a predetermined temperature or more flows in from the faucet. Then, the thermal deformation member is deformed to set the passage switching member to the first position, so that it is possible to prevent the hot water from directly flowing out from the outflow port and flowing into the water treatment device.

[Brief description of drawings]

FIG. 1 shows a branch plug according to one embodiment of the present invention, and FIG.
It is sectional drawing which follows the line.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along the line BB of FIG.

FIG. 5 is a front view showing a torsion spring of the branch plug.

FIG. 6 is a piping system diagram showing a state in which the branch plug is connected to a water faucet and a water treatment device.

FIG. 7 shows the branch plug when the cock is in the second position,
It is sectional drawing shown corresponding to FIG.

FIG. 8 shows the branch plug when the cock is in the second position,
It is sectional drawing shown corresponding to FIG.

9 is a sectional view taken along the line AA of FIG.

10 is a sectional view taken along the line BB of FIG.

FIG. 11 is a cross-sectional view showing a state in which the cock is set to the first position by the recovery of the shape of the torsion spring.

FIG. 12 is a front view showing a torsion spring whose shape has been recovered.

[Explanation of symbols]

 1 Water tap (faucet) 2 Branch plug 3 Water treatment device 4 Branch plug main body 5 Cock (passage switching member) 8 Torsion spring (thermal deformation member) 13 First passage (first inlet) 14 Second passage (supply inlet) ) 15 3rd passage (2nd inflow port) 16 4th passage (outflow port) 22 Lever (operating member) 38 1st position 39 2nd position

Claims (1)

[Claims] 1. A first inflow port into which water flows from a faucet,
A supply port for supplying the water inflowing from the first inflow port to the water treatment device, a second inflow port into which the water treated by the water treatment device inflows, the first inflow port and the A branch plug body having an outlet for discharging the water flowing in from the second inlet to the outside, and a branch plug body slidably provided in the branch plug body and being set to the first position The first inflow port and the outflow port are connected to each other, the communication between the first inflow port and the supply port is blocked, and the first position is set to the second position.
A passage switching member for communicating the inflow port and the supply port with each other and blocking the communication between the first inflow port and the outflow port, and for switching the passage switching member to the first position or the second position. In the branch plug having the operation member, the passage switching member is urged by being thermally deformed when the temperature of the water flowing in from the first inlet becomes equal to or higher than a predetermined temperature. A branch plug, characterized in that a thermal deformation member is provided to set the position to the first position.