JPS6014667A - Shower device - Google Patents

Abstract

PURPOSE:To restrain variations in temperature of discharge water, by providing, in a mixed water passage, a reservoir chamber having. CONSTITUTION:The inside of the valve body 5 of a thermostat mixing valve 1 is divided into three passages, a hot water passage 6 communicated with a hot- water supply, a water passage 7 communicated with a water supply and a mixed water passage 8 communicated with both passages 6, 7 and as well with a communicating pipe 3. The mixed water passage is once enlarged within a reservoir chamber 50 and is reduced, gradually toward a downstream side hose 37. The volume of the mixed water in the reservoir chamber 50 is stayed by a predetermined time in order to mix mixed water in a high temperature area based upon variations in the pressure of water supply, again with mixed water in the set temperature area, thereby the amount of overshoot may be restrained, an inside volume in which mixed water may stay.

Description

[Detailed Description of the Invention] [Technical Field] The present invention provides a control valve that automatically adjusts the temperature of mixed water using a temperature sensing section, an on-off valve that performs a discharge operation of mixed water, and a control valve that is provided in communication with a mixed water outlet. The present invention relates to a shower device equipped with a shower tool.

[Prior art and its problems]

In a shower device installed in a bathroom or the like, the hot water from the shower equipment comes into direct contact with the skin, so careful attention must be paid to adjusting the temperature of the mixed water. For this,
An automatic regulating valve configured to maintain the temperature of the mixed water at a set temperature is provided to prevent discharge of abnormally high temperatures.

However, if the pressure and temperature of each water supply source fluctuates while the mixed water is being discharged, the mixed water temperature changes at the moment of this fluctuation.
After a while, the pattern returns to the original constant temperature,
There is a problem that stable water discharging cannot be performed.

The structure of the automatic regulating valve is as conventionally known, in which a control valve body is attached on both end faces of which come into contact with and separate from the water valve pressure and hot water valve pressure formed in the main body, and this control valve body is moved between the two valve seats. It is equipped with a temperature sensing part that sets the opening degrees of the water valve and hot water valve and expands and contracts depending on the temperature of the mixed water. That is, the control valve body moves according to the temperature of the mixed water near the temperature sensing part, and can automatically adjust the valve opening degrees of the water valve and the hot water valve.

In such a structure, for example, when the water supply pressure decreases during use, the amount of water flowing in decreases and the temperature of the mixed water increases.

As a result, the control valve body is moved in a direction in which the water valve opening degree is large and the hot water valve opening degree is small so that the temperature sensitive body expands under the influence of heat and suppresses a temperature rise. The time during which the control valve element is operated by the temperature sensing element becomes a transient state, and the mixed water temperature overshoots the set temperature. Therefore, the control valve body stops at a fixed position and then returns to a steady temperature, making it impossible to suppress fluctuations in the temperature of the discharged water.

Another problem is that if the on-off valve is repeatedly opened and closed during use, mixed water with a temperature higher than the set temperature is discharged each time the valve is opened.

The cause of this is that while the on-off valve is closed, the temperature of the mixed water that accumulates in the mixing chamber drops, and this fluctuation causes the temperature sensing part to contract and the opening of the hot water valve to increase, causing the on-off valve to open. At the moment the inflow of hot water increases, the temperature of the mixed water temporarily rises.

As described above, in a shower system in which a temperature control valve and an on-off valve are installed between the water supply source and the hot water source, the mixed water There is a problem in that the temperature changes temporarily, making stable use impossible.

[Purpose of the invention]

An object of the present invention is to reduce the magnitude of the temperature change of mixed water discharged from a shower equipment caused by pressure and temperature fluctuations of a water supply source and time-limited operation of an on-off valve. The technical problem to be solved by the present invention is to prevent changes in the discharge mixed water temperature based on fluctuations in the pressure and temperature of the water supply source, or temperature changes accompanying the opening of the on-off valve, before the temperature changes. The method is to mix the water with the mixed water and discharge it from the shower equipment.

[Structure of the invention]

The configuration for achieving the above technical problem is to provide a shower device that includes a control valve that communicates with a water supply source to mix hot water and automatically maintain the set temperature, and a shower device that is connected to the control valve. A storage chamber in which mixed water accumulates is installed between the shower equipment and the shower equipment.

With the above configuration, the mixed water from the control valve temporarily accumulates in the storage chamber and does not flow down in the direction of the shower odor. The water is remixed with the steady state mixed water before the temperature change, correcting the temperature deviation and reducing the overshoot and undershoot of the discharge temperature from the shower appliance.

〔effect〕

With the above configuration, the present invention can: i) provide flow conditions for the mixed water such that the amount of deviation with respect to the set temperature is small; therefore, fluctuations in the temperature discharged from the shower equipment are extremely small, and the shower equipment can be used safely;

ii) The structure is simple and can be manufactured at low cost since it is only necessary to provide a storage chamber with a large capacity in series in the flow path.

〔Example〕

The present invention will be described below based on embodiments shown in the drawings.

This embodiment is equipped with a shower head that can be taken out and used from a counter such as a hair washing stand, and the main structure of the shower head is shown in FIG.

In the figure, (1) is a thermos-soto mixing valve that communicates with the water supply source and mixes hot water to a set temperature, and (2) is the same - a connecting pipe (3) inside the hot-water mixing chamber of the thermos-soto mixing valve (1). Mixed water on/off valve, which communicates through (
4) is a shower head forming a shower device communicating with the on-off valve (2).

Inside the main body (5) of the thermosoto mixing valve (1), there are a hot water flow path (6) communicating with the hot water supply source, a water flow path (7) communicating with the water supply source, and both flow paths (61, (7+)). It is divided into three flow paths: a mixed water flow path (8) which communicates with the communication pipe (3).

(9) is a first cylindrical body fitted into the opening on one end side of the main body (5), and 00) is coaxially connected to the first cylindrical body (9), and is connected to the water flow path (7) and the mixed water flow path (8). ) is the second cylindrical body disposed between the two cylinders. Inside the second cylindrical body α0), an element case (11) forming a temperature sensing part (T) is arranged so as to be slidable in the axial direction, and wax is sealed as a temperature sensitive material inside the element case (11). A temperature sensing element (12) is fixed on the same axis. One end of the temperature sensing element (12) is in contact with an operating shaft (14) that is moved in the axial direction by a handle (13) rotatably attached to the first cylinder (9).
) A pin (17) protruding from one end of the temperature sensor (12) is fitted into a pressing member (16) urged toward the temperature sensor (12) by a safety spring (15). Thermosensitive body (12
) receives heat, the internal wax expands and the pin (17
) advances to the outside, and this reaction force causes the thermosensor (12
) The element case (11) moves forward and backward in the axial direction.

(18) is a control valve body that is provided between the hot water flow path (61, (7)) and is slidable on the same axis as the element case (11).
) direction. The control valve body (18) has a substantially H-shaped axial cross section, and has an annular end surface (
lea) approaches and separates from the end surface (20a) of the bushing (20) to control the hot water valve (VH), and the annular end surface (
18b) are brought into contact with and separated from the end surface (10a) of the second cylinder α0) to form water valves (Vc) on the same axis, and the valve opening degrees of the hot water valve (VH) and the water valve (Vc) are controlled by these. This constitutes a control valve (C) that adjusts and sets the mixed water.

In addition, a hot water inlet (21) is provided in the control valve body (I8), and the element case (11) is configured such that its internal force communicates with the vortex flow path (6) via the hot water inlet (21). The end faces are in contact. The element case (11) moves forward and backward in the axial direction by the rotational operation of the noundle (13), and in response, the control valve body (18) also moves back and forth in the axial direction to open the hot water valve (
The mixed water temperature can be set by changing the valve opening degrees of VH) and water valve (Vc) at the same time.

The element case (11) has a water inlet (22) on the water valve (Vc) side, and a mixed water outlet (23) in the mixed water flow path (s) (II L communication). The hot water from the hot water inlet (21) of 18) and the water inlet (21)
The water from 2) mixes in the element case (11),
From the mixed water outlet (23) to the opening (24) of the second cylindrical body 00)
) flows down into the mixed water channel (8).

In the above, the mixed water in the element case (11) flows around the temperature sensing element (12), and the internal wax expands and contracts depending on the temperature of the mixed water, causing the pin (17) to emerge and retract, and the control valve Automatic temperature control can be performed by adjusting the opening degree of the valve (C).

The on-off valve (2) is installed by inserting it through a counter (100) of a hair washer, etc., and has an inlet (30) to which the connecting pipe (3) is connected.
The opening/closing handle (33) for operation is provided on the opening/closing valve body (32) having an outlet (31).

A valve seat (34) is formed coaxially with the inlet (30), and a valve body (35) that approaches and separates from the valve seat (34) is connected to the handle (33).
) is attached to the lower end of the spindle (36) that is linked to the spindle (36).

A flexible hose (37) is connected to the outlet (3I), and the hose (37) communicates with the shower head (4) to direct the mixed water from the on-off valve (3) to the sprinkler plate (38). It can be dispersed through the small holes (39). shower head(
4) is a receiver (40) fixed to the counter (100)
When in use, it can be pulled upward for hair washing, etc.

(50) is a mixed water storage chamber provided in the middle of the hose (37), and a fitting fitting (50) to which the end of the hose (37) is fitted.
51), it is composed of a bushing (52) of different diameters which is screwed onto the mounting fitting (51), and a cylinder (53) whose both ends are screwed onto the bushing (52).

The inner diameter of the cylinder (53) is larger than the inner diameter of the hose (37),
The mixed water flow path expands once within the storage chamber (50) and contracts again toward the hose (37) on the downstream side. Therefore, the mixed water is decelerated by the flow path change in the storage chamber (50),
Directly to the shower/throat (4) without flowing down to the same storage room (50
) is temporarily accumulated within the range.

In addition, since the storage chamber (50) is provided in a hanging manner close to the main body (32) of the on-off valve (2), the shower belly button)
'(4) When pulling out from the receiver (40), the storage chamber (
50) is not added to the shower head (4), and the shower head (4) can be easily pulled out.

In the above configuration, the thermosomatic mixing valve (
1) by operating the control valve (C) with the handle (13) and adjusting the water valve (Vc
) and the hot water valve (VH) and open/close the on-off valve (2), mixed water can be discharged from the throat (4) to the shower.

Here, when the pressure on the water supply side drops and the flow rate of water to the mixed water flow path (8) decreases, the flow rate of hot water increases and the mixed water temperature rises above the set temperature.

After passing through the on-off valve (2), the high-temperature mixed water flows into the storage chamber (50) and temporarily accumulates therein.

On the other hand, inside the mixed water flow path (8), the temperature-sensitive material of the temperature-sensing part (T) expands and the pinot (17) protrudes, causing the element case (1
1) in the direction of the control valve body (18) to reduce the valve opening of the hot water valve (VH).

Then, the hot water valve (VH) opening is set small and the water valve (Vc) opening is set small to compensate for the temperature rise due to changes in the water supply, and the flow rates of the hot water and water are adjusted, and the mixed water temperature is set at the set value. Automatically adjust so that

In this way, in the flow path from the mixed water flow path (8) to the on-off valve (2), during the transition time of automatic adjustment by the temperature sensor (T) from the time when the temperature of the mixed water starts to fluctuate, the initial state is as shown in Figure 2 a. Set temperature T. The temperature rises to a higher temperature T1 (time: 1.), and the flow rate of hot water and water is adjusted by moving the control valve body (18) to reach the set temperature T. (Time: t2).

However, the initial state is that the storage chamber (50), which has a large internal capacity, is located downstream of the on-off valve (2)! 3 (temperature T+) is temporarily retained in the same storage chamber 50), and is remixed with the mixed water of the set temperature To that had already flown in before the water supply pressure change, and also flows in with a time delay. It is also remixed with the automatically temperature-adjusted mixed water at the set temperature To. Therefore, if the volume in the storage chamber (50) is made to be able to stay for a certain period of time with respect to the mixed water flow rate, the mixed water in the high temperature range based on fluctuations in the water supply pressure can be reused with the mixed water in the set temperature T0 range. By mixing, set temperature T as already shown in Figure 2.

A temperature pattern with a small amount of overshoe I can be created.

By smoothing the temperature of the mixed water by providing this storage chamber (50), fluctuations in the temperature of the mixed water sprayed from the shower head (4) can be suppressed.1. Can be used comfortably.

Note that when the pressure on the hot water source side drops, the temperature of the mixed water in the flow path up to the on-off valve (2) will be temporarily lower than the set temperature;
Similarly to the above, the inflow of mixed water whose temperature has been adjusted to the set temperature in the storage chamber (50) causes the temperature to quickly reach the set temperature, thereby minimizing temperature fluctuations from the shower head (4). can.

Also, the control valve body (18) is positioned so that when the on-off valve (2) is opened after a certain period of time, the temperature sensing part (T) in the low temperature atmosphere increases the opening degree of the hot water valve (VH). Mixed water with a temperature higher than the set temperature flows down. In this case as well, mix water at the set temperature automatically adjusted by the temperature sensor (T) and the storage chamber (5
0), the temperature is similarly corrected and the mixture is discharged from the shower head (4).

The present invention is not limited to the above-described embodiments, and can be modified in various ways. For example, the hose (37) and the storage chamber (50) may be integrally formed by bulging the middle part of the flexible hose (37). A storage chamber (50) may be provided between the control valve (C) and the mixed water on-off valve (2). The present invention can be applied not only to exposed-type shower devices, but also to recessed-type shower devices in which piping and valve bodies are arranged within a wall surface, and handles and shower tools are provided to protrude from the wall surface. . Furthermore, the opening/closing valve (2) is not provided in the mixed water flow path (8) to open and close the flow path (8), but the hot water flow path (6) and the water flow path (7) on the distillation side from the control valve (C). It is also possible to have a structure in which both channels (6) and (71) are opened and closed at the same time.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the main structure of the shower device according to the present invention, Fig. 2a is a graph showing temperature fluctuations in the flow path up to the on-off valve when the water supply pressure drops, and Fig. 2 shows the same conditions. It is a graph which shows the temperature fluctuation in the flow path which is below and extends from the storage chamber to the shower equipment. (4) Shower head (shower equipment) (6) Hot water flow path (7) Water flow path (8) Mixed water flow path (50) Storage chamber (C) Control valve (T) @ Yube Patent applicant Totokiki Co., Ltd. Agent Tebori Masu (2 idiots) Figure 2 (a) (b) Teracon

Claims (1)

[Claims] 1. Automatically adjusts the mixed water temperature by operating a water flow path, a vortex flow path, a mixed water flow path that communicates with both flow paths, and a temperature-sensing section that is installed in the mixed water flow path and senses the temperature of the mixed water. It has a control valve and a shower device provided downstream from the control valve,
A shower device characterized in that the mixed water flow path is provided with a storage chamber having an internal volume capable of retaining the mixed water.