JPH02146384A - Hot water and water mixing controller - Google Patents

Abstract

PURPOSE:To prevent a valve from being fixed and get rid of the increase of the torque at the time of starting, even in the case of a long term non-use, by equipping a timer means which outputs to a hot water temperature control means a signal to drive a mixing valve, every time a specified time has passed, after the closure of a flow quantity regulating valve. CONSTITUTION:A timer means 11 which outputs to a hot water temperature control means 9 a signal to drive a mixing valve 3 every time when a specified time has passed after the closure of a flow quantity regulating valve 5, is provided. As a result, when the flow quantity regulating valve 5 is closed, the timer means 11 starts to act, and outputs to the control means 9 a signal to make the mixing valve 3 act, every time when a specified time passes, and moves the mixing valve 3 by a fixed amount through a mixing valve driving means 4. Furthermore, after the completion of an action, the mixing valve 3 is returned to a former position by means of the control means 9. On account of this, the mixing valve 3 is not fixed, and can be kept in a condition in which the action of putting out hot water safely at all times is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot water mixing control device that adjusts the mixing ratio of hot water and water to obtain an optimal mixed water temperature.

2. Description of the Related Art Conventionally, there has been a hot water mixing control device of this type as shown in FIG.

In FIG. 2, a mixing valve 3 is provided at the junction of the water supply pipe 1 and the hot water supply pipe 2, and the mixing valve is operated by a mixing valve driving means 4. A flow control valve 5 is provided downstream of the mixing valve, and the flow control valve is operated by a flow control valve driving means 6. Furthermore, the control means 9 controls the mixing valve and the flow rate control valve according to the amount of deviation between the hot water temperature detected by the temperature detection means 7 and the hot water temperature set by the setting means 8, so that the mixed hot water equal to the set temperature is delivered to the discharge outlet. 1
It was obtained from 0.

Problems to be Solved by the Invention However, with the above configuration, if the valve is not used for a long period of time, the gasket of the water stop part of the valve may tighten on the mixing valve valve stem, or the mixing valve and main body may become engaged due to water pressure. The mixing valve is stuck.

This may cause an increase in torque during startup, causing the valve to become stuck.

The present invention is intended to solve such conventional problems, and aims to prevent the valve from sticking and eliminate the increase in torque at the time of starting.

Means for Solving the Problems In order to solve the above problems, the hot water mixing control device of the present invention includes a mixing valve for mixing hot water and water to obtain mixed hot water at a desired temperature, a temperature setting means, and a temperature detection means. a hot water temperature control means for controlling the hot water temperature by comparing the temperature setting means with the temperature detecting means; a flow rate regulating valve for regulating the amount of hot water dispensed; A timer means is provided for outputting a signal for driving the mixing valve to the hot water temperature control means.

Effects With the above-described configuration, even if the hot water mixing control device continues to stop dispensing hot water for a long period of time, the mixing valve is operated at regular intervals by the timer means.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. Note that parts in FIG. 1 that are the same as those in FIG. 3 are given the same numbers.

In FIG. 1, reference numeral 11 denotes a timer means for outputting a signal for driving the mixing valve 3 to the hot water temperature control means 9 when a certain period of time has elapsed after the flow 131 valve 5 was closed.

Next, the operation of the configuration of the present invention will be explained.

In the tapping state, signals from the temperature detecting means 7 and the setting means 8 are input, and the control means 9 operates the mixing valve using the mixing valve driving means 4 so that there is no temperature deviation between the tapping temperature and the set temperature.

When dispensing hot water is stopped, the flow control valve 5 is closed, and at this time, the mixing valve 3 also stops operating. Therefore, when the flow rate control valve 5 is closed, the timer means 11 starts operating and outputs a signal for operating the mixing valve 3 to the control means 9 every time a preset time elapses. When the control means 9 receives this signal, it moves the mixing valve 3 by a certain amount via the mixing valve driving means 4.

Further, after this operation is completed, the control means 9 returns the mixing valve to its original position.

Therefore, for the above-mentioned reason, the mixing valve 3 is not stuck and can always be kept in an operable state.

Further, since the mixing valve 3 is at the valve position corresponding to the temperature of hot water before stopping, safe hot water can be tapped when hot water starts being tapped.

Effects of the Invention As described above, if the hot water mixing control device of the present invention is used, the mixing valve is operated by a certain amount every time a certain period of time elapses even when hot water is stopped using the timer means.

Therefore, the gasket of the water stop part in the mixing valve part does not tighten on the mixing valve shaft, or the mixing valve and main body do not engage with each other due to water pressure, and there is no increase in torque at the time of starting, and the mixing valve moves. (Nothing will happen.)

Therefore, the mixing valve operates from the start of hot water dispensing, and hot water at an optimal mixed water temperature can be constantly supplied.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a hot water mixing control device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional hot water mixing control device. 3...Mixing valve, 4...Mixing valve drive means, 5...Flow rate control valve, 6...Flow rate control valve drive means, 7... ...Temperature detection means, 8...
... Setting means, 9... Control means, 11...
...Timer means. Name of agent: Patent attorney Shigetaka Awano (1 person) Figure 2

Claims (1)

[Claims] a mixing valve that mixes hot water and water to obtain mixed hot water at a desired temperature;
a temperature setting means, a temperature detection means, a hot water temperature control means for controlling the hot water temperature by comparing the temperature setting means and the temperature detection means, a flow rate control valve for adjusting the amount of hot water dispensed, and the flow rate control valve being closed. and timer means for outputting a signal for driving the mixing valve to the hot water temperature control means every time a predetermined period of time has elapsed.