JPH0967849A - Hot water cleaning device and hot water mixing valve for the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a human body from being burnt by providing a bypass passage in a mixing valve which supplies mixed water of hot water and water to a local cleaning nozzle and arranging not to discharge hot water at a high temperature even when a trouble occurs resulting from a breakdown of the mixing valve or the like. SOLUTION: A hot water mixing valve 3, which comprises two valve disks connected to a valve shaft 9 movable in the axial direction, opens and closes alternately an inlet of a hot water supply pipe 1 and an inlet 7 of a water supply pipe 2, thereby producing mixed water (low temperature water) and supplying the mixed water to a local cleaning nozzle from a mixed water discharge pipe 4. A bypass passage 5 is provided on a wall area 17 of this hot water cleaning device and sends water directly from the water supply pipe 2 to the mixed water discharge pipe 4 without using the hot water mixing valve 3. In place of the bypass passage 5, a stopper is provided so that the valve disk may not full open the water inlet 7. Even when the water inlet 7 is closed due to a failure of a thermostat or the like, it is arranged so that only high temperature hot water may not be discharged. This construction makes it possible to protect a human body from being locally burnt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water washing device and a hot and cold water mixing valve used in the hot water washing device.

[0002]

2. Description of the Related Art A hot water washing device is a toiletry product that is used by many people for washing local areas after use and for maintaining cleanliness. Specifically, filth and the like are washed away by spraying hot water locally.

As described above, the hot water used in the hot water cleaning device must be used with great care in temperature control because it is used for human body parts. In the conventional hot water, as shown in FIG. 2, hot water and water are respectively introduced into the hot and cold water mixing valve, and the mixing ratio is changed by a valve shaft having a valve body provided in the hot and cold water mixing valve. As can be seen from the figure, the mechanism is such that the valve element provided on the valve shaft works to open and close the inlets of hot water and water, and the valve shafts are moved left and right to adjust the inflow amount of each and to adjust the mixing ratio. I have decided.

The two valve elements provided on the valve shaft do not fully close both hot water and water, in other words, the valve elements on the hot water side and the water side are closed by one operation. It is provided shorter than the distance between the hot water inlet and the water inlet so that the opening can be changed.

A mixed water obtained by mixing hot water and water is guided to a nozzle through a mixed water discharge pipe and is jetted. As a matter of course, a safety device is usually attached to the mixed water discharge pipe, and a safety device is installed so that high temperature water that may cause harm (burns, etc.) to the human body does not flow into the nozzle.

[0006]

However, when the conventional hot and cold water mixing valve is used, there is a problem in that the thermostat malfunctions or is broken for some reason and the hot water is allowed to flow into the nozzle. This is because it is possible to fully close the water side and fully open the hot water side due to the structure of the nozzle shaft.

In view of the above problems, the present invention provides a hot water cleaning device in which hot water that causes burns to the human body is not discharged from the mixed water discharge pipe to the nozzle even if the thermostat malfunctions or malfunctions. Another object of the present invention is to provide a hot and cold water mixing valve for the hot water washing device.

[0008]

According to the first aspect of the present invention, a hot water supply pipe 1 for supplying hot water and a water supply pipe 2 for supplying water are connected to a hot and cold water mixing valve 3 to mix mixed water. Mixed water discharge pipe 4
In the hot water cleaning device which discharges the mixed water as a cleaning water, the mixed water discharge pipe 4 and the water supply pipe 2 are used.
It is characterized in that a bypass passage 5 for directly supplying water from the water supply pipe to the mixed water discharge pipe is provided without passing through the hot and cold water mixing valve 3.

A second aspect of the present invention is a valve shaft 9 having a hot water inlet 6, a water inlet 7 and a mixed water discharge port 8, a hot water introducing pipe 10, a water introducing pipe 11 and a mixed water containing the valve shaft 9. A hot and cold water mixing valve including a valve shaft case 13 having a discharge pipe 12, wherein a clearance 14 of a portion of the valve shaft 9 that is on the water introduction pipe 11 side when the valve shaft case 13 is accommodated is provided on the hot water introduction pipe 10 side. The feature is that it is wider than the clearance 14.

A third aspect of the present invention is a valve shaft 9 having a hot water inlet 6, a water inlet 7 and a mixed water discharge port 8, a hot water introducing pipe 10, a water introducing pipe 11 and a mixed water containing the valve shaft 9. A hot and cold water mixing valve including a valve shaft case 13 having a discharge pipe 12, characterized in that the moving range of the valve shaft 9 is limited by providing a stopper 15 on the valve shaft case 13.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Explaining with reference to FIG. 1 corresponding to the structure of the present invention, a bypass passage 5 is provided in a wall portion other than a water inlet 7 provided in a hot water mixing valve 3 from a water supply pipe 2. . Therefore, even if the valve on the water side is fully closed, water will be mixed with the hot water in the mixed water discharge pipe 4.

A second embodiment of the present invention will be described with reference to FIG. 3. In a hot and cold water mixing valve that mixes hot water with the rotation angle of the valve shaft 9 without using a valve body, the water entering side By making the valve shaft 9 clearance 14 larger than the valve shaft 9 clearance 14 on the side where hot water enters, it becomes possible to forcibly mix water. In this type of hot and cold water mixing valve, the mixing ratio of water and hot water can be changed according to the rotation angle of the valve shaft 9, and one of them can be fully closed. However, by increasing the clearance 14 on the water side, even if the water inlet 6 is not in the direction of the water supply pipe 2, the clearance 14
The water that goes around will be mixed with the hot water.

A description will be given with reference to FIG. 4 corresponding to the third structure of the present invention. When a valve shaft 9 using a valve body is used, a stopper is provided so as to be caught between the hot water side and the water side valve bodies. By providing 15 on the valve shaft case 13, it is possible to prevent the valve element on the water side from being fully closed and to forcefully mix the water.

Further, the valve shaft 9 is used without using the valve body.
In the hot and cold water mixing valve that mixes hot and cold water according to the rotation angle of, the protrusion 18 is provided on the valve shaft 9 as shown in FIG.
By providing the stopper 15 on the valve shaft case 13 so that the protrusion 18 abuts on the valve shaft case 13, it is possible to adjust the water inlet 7 so as not to be fully closed.

In order to make the sum of the pressure losses of the hot water and the water constant, the sum of the areas of the hot water inlet 6 and the water inlet 7 provided in the valve shaft 9 is made constant regardless of the opening degree of the valve shaft 9. Can be achieved. Similarly, the pressure loss is not constant because the area sum is not constant regardless of the opening of the valve shaft 9.

[0016]

According to the present invention, a bypass passage is provided,
In addition, by increasing the clearance of the hot and cold water mixing valve or providing a stopper, the water is forcibly mixed in the mixed water discharge pipe, and even if the thermostat fails, high-temperature water that will cause burns to the human body is injected. Never.

Further, since the pressure loss in the bypass passage is increased, the outflow amount of water from the bypass passage is limited, and the low temperature water is not inadvertently injected. When the pressure loss between the hot water and the water is constant, the amount of the mixed water injected is constant even if the mixing ratio is changed, and the user does not feel uncomfortable, and the pressure loss between the hot water and the water is constant. When it is not set, the injection amount of the mixed water is changed to give a massage effect.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the first embodiment of the present invention will be described with reference to FIG. 1. Hot water and water flow into the hot and cold water mixing valve through the hot water supply pipe 1 and the water supply pipe 2, respectively. To do. The amount of inflow can be adjusted by a valve element provided on the valve shaft 9, and the opening is controlled by moving the valve shaft 9 left and right by a drive motor unit in the drawing. The plurality of valve bodies are provided so as to be narrower than the distance between the hot water inlet 6 and the hot water inlet 7, and it is possible to fully close the valves for hot water and water, but not both at the same time. It is like this. When the valve body on the water side is fully closed, no water flows in from the water inlet 7. However, it is possible to prevent water from flowing into the mixed water discharge pipe 4 and injecting high temperature water by the bypass passage 5 provided in the wall portion 17 without passing through the hot and cold water mixing valve 3.

Further, if an orifice is provided in the middle of the bypass passage 5, the pressure loss on the side of the bypass passage becomes high, and it is possible to prevent the low temperature mixed water from being injected during normal use.

Next, the second aspect of the present invention will be described with reference to FIG. 3. In a hot and cold water mixing valve that does not use a valve body, the clearance 14 of the valve shaft 9 inserted into the valve shaft case 13 is connected to the hot water side and the Water is forcibly mixed by changing on the side. Specifically, by increasing the clearance 14 of the valve shaft 9 on the water side, even if the directions of the water inlet 6 and the water introducing pipe 11 are not aligned, in other words, even if the water side is fully closed. The water sent from the water introducing pipe 11 enters the hot and cold water mixing valve 3 as it passes through the clearance 14, and is discharged from the mixed water discharge port 8.

The third aspect of the present invention will be described with reference to FIGS. 4 and 5. First, in the hot and cold water mixing valve 3 of the type shown in FIG. 4, which uses the valve element, a stopper 15 for limiting the movement of the valve element is provided. By providing the above, the water is always allowed to flow into the mixed water discharge pipe 4 without providing the bypass passage 5. The stopper is not particularly limited to the location provided if the water inlet 7 is provided at a position where the valve body is not fully closed.

FIG. 5 shows an embodiment using a hot and cold water mixing valve 3 of a type that does not use a valve body. In this case, the valve shaft 9 is provided with the protruding portion 18 and the valve shaft case 13 is provided with the stopper 15 so that the water is forcibly forced into the mixed water discharge pipe without changing the clearance 14 between the hot water side and the water side. I am sending it in. As shown in FIGS. 5B to 5D, the stopper prevents the water inlet 7 and the water inlet pipe 11 shown in the AA cross section from not overlapping (fully closing). The specific ratio of hot water and water is
(B) 0: 100, (C) 50:50, (D) 7
It is 0:30.

When using the hot and cold water mixing valve shown in FIG. 5, the pressure loss of the hot water and the hot water is obtained by providing the hot water inlet 6 and the hot water inlet 7 having the same area with the AA line shown in FIG. 6 as a boundary. It is possible to make the sum of pressure losses constant. And the AA
It is possible to change the sum of the pressure loss of hot water and water by providing the hot water inlet 6 and the water inlet 7 having different areas with the line as the boundary.

[0024]

According to the present invention, by providing a bypass passage, a clearance and a stopper, water can be forcibly fed to the mixed water discharge pipe even if the valve body on the water side is fully closed. However, it is possible to prevent the high temperature water from being jetted to the human body.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part around a bypass passage according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a hot and cold water mixing valve used in a conventional hot water cleaning device.

FIG. 3 is a sectional view of a hot and cold water mixing valve according to an embodiment of the present invention.

FIG. 4 is a sectional view of a hot and cold water mixing valve according to another embodiment of the present invention.

FIG. 5 is a side view and a sectional view of a hot and cold water mixing valve according to another embodiment of the present invention.

FIG. 6 is a side view and a sectional view of a main part of a valve shaft according to an embodiment of the present invention.

[Explanation of symbols]

1. Hot water supply pipe 2. Water supply pipe 3. Hot water mixing valve
4. Mixed water discharge pipe 5. Bypass passage 6. Hot water entrance 7. Water inlet 8. Mixed water discharge pipe 9. Valve shaft 10. Hot water introduction pipe 11. Water introduction pipe 1
2. Mixed water discharge pipe 13. Valve shaft case 14. clearance
15. Stopper 16. Valve 17. Wall 18. Protrusion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Aritaka Kuboi 1250 Shimoeren, Shimodate City, Ibaraki Prefecture Hitachi Chemical Co., Ltd. Inside the Yuki Plant

Claims (6)

[Claims] 1. A hot water supply pipe for supplying hot water and a water supply pipe for supplying water are connected to a hot and cold water mixing valve, the mixed water mixed is discharged from a mixed water discharge pipe, and the mixed water is washed water. In the hot water washing device used as, a bypass passage is provided for directly feeding water from the water supply pipe to the mixed water discharge pipe without passing the mixed water discharge pipe and the water supply pipe through a hot and cold water mixing valve. Hot water cleaning device. 2. The hot water washing according to claim 1, wherein the pressure loss of the bypass passage is larger than the pressure loss between the branch point of the water supply pipe and the bypass passage and the confluence point of the mixed water discharge pipe and the bypass passage. apparatus. 3. Hot water comprising a valve shaft having a hot water inlet, a water inlet and a mixed water discharge port, and a hot water introducing pipe for housing the valve shaft, a valve shaft case having a water introducing pipe and a mixed water discharging pipe. A hot and cold water mixing valve for a hot water washing device, wherein a clearance of a portion of the valve shaft on the water introduction pipe side when the valve shaft is housed in the valve shaft case is wider than a clearance on the hot water introduction pipe side. 4. Hot water comprising a valve shaft having a hot water inlet, a water inlet and a mixed water discharge port, and a hot water introducing pipe for accommodating the valve shaft, a valve shaft case having a water introducing pipe and a mixed water discharging pipe. A hot and cold water mixing valve for a hot water washing device, wherein the moving range of the valve shaft is limited by providing a stopper on the valve shaft case. 5. The hot and cold water mixing valve according to claim 3 or 4, wherein the sum of the pressure losses of the hot water and the water is constant regardless of the mixing ratio. 6. The hot and cold water mixing valve according to claim 3, wherein the sum of the pressure losses of the hot water and the water is not constant regardless of the mixing ratio.