JP2518426Y2 - High temperature hot water bath water heater - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a high-temperature hot-water bath water heater.

[Conventional technology]

A vacuum breaker, a check valve and a pressure sensor are installed in the bathtub hot water supply pipe from the heat source to the bathtub, and when the remote control's automatic switch is turned on, the hot water at the temperature set on the remote control is fed into the bathtub. Bath water heaters that stop the hot water supply when the pressure sensor detects that the water level inside has reached the water level set in the remote control are disclosed in, for example, JP-A-61-96359 and JP-A-63-60835. It is known as shown.

[Problems to be solved by the device]

However, since the conventional bath water heater has a pressure sensor provided in the bath water supply pipe, it is necessary to use an expensive water level detection device having heat resistance in the case of a device having a high-temperature hot water function. Still, there is a problem with durability.

The present invention solves the above-mentioned problems of the prior art,
It is intended to provide a high-temperature hot-water bath water heater that is not affected by high-temperature water even if an inexpensive pressure sensor is used.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention configures a bathtub hot water supply pipe from the heat source device to the bathtub with one pipe, and a vacuum breaker and a check valve are provided in the one bathtub hot water supply pipe. In the arranged high-temperature hot water bath water heater, a switching valve is provided on the downstream side of the vacuum breaker of the one bathtub hot water supply pipeline, and a pipeline extending in a different direction from the vacuum breaker via the switching valve. A sensor for detecting the water level in the bathtub is provided in a pipe line that extends in a direction different from that of the vacuum breaker, and when the switching valve is set to the bath position in order to supply hot water to the bathtub, the pressure sensor causes It is characterized by being separated.

[Action]

Since the bath water heater of the present invention is configured as described above, the pressure sensor is disconnected from the hot water supply circuit when the hot water is supplied to the bathtub, the vacuum breaker side and the bath side are communicated, and the switching valve is switched when the bath water level is detected. The pressure sensor can be separated from the vacuum breaker side and communicated with the bath side to detect the water level, and the pressure sensor can be reliably prevented from being affected by high-temperature water.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a water system diagram showing an embodiment of a high temperature hot water bath water heater to which the present invention is applied. In FIG. 1, reference numeral 1 denotes a water supply pipe, 2 denotes a heat exchanger, and hot water heated by the heat exchanger is selectively supplied to a hot water supply pipe line 4 to a bathtub 12 and a general hot water supply pipe line 5 by an electric switching valve 3. It is configured to be able to supply to.

The hot water supply pipe is composed of one pipe, and the bath water supply pipe 4 has a vacuum breaker 6 and
Check valves 7 and 8 are disposed downstream.

In the present invention, an electric switching valve 9 is provided on the downstream side of the vacuum breaker 6, and a pipe line 10 extending in a different direction from the vacuum breaker is provided via the electric switching valve 9, and the pipe line 10 is provided. A pressure sensor 11 is provided in the.

In addition, 13 is a flow sensor arranged in the water supply pipe, 14 is also a water supply temperature detection sensor, 15 is a hot water discharge temperature detection sensor arranged in the hot water supply pipe, 16 is a flow sensor arranged in the general hot water supply pipe, The signals detected by the respective sensors and the pressure sensor 11 are input to the microcomputer control unit 17 incorporated in the instrument,
It is automatically controlled according to the conditions set on the remote controller (not shown).

Since the high temperature hot water bath water heater of the present invention is constructed as described above, when the electric switching valve 9 is set to the bath position shown in FIG. There is no risk of being affected by high-temperature water after being separated by. Then, when the bath water level is detected, the electric switching valve 9 is set to the third position.
By switching to the position shown in the figure, the pressure sensor 11 can accurately detect the bath water level.

In the above embodiment, the electric switching valve is used as the switching valve 9, but the present invention is not limited to such a switching valve, and for example, an electromagnetic switching valve is used. You can also

[Effect of device]

As described above, according to the present invention, there is no possibility that the pressure sensor will be affected by the high temperature water, and there is an effect that the inexpensive bath pressure sensor can be used to accurately detect the bath water level.

[Brief description of drawings]

FIG. 1 is a water system diagram of a high temperature hot water bath water heater showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing hot water supply to a bathtub,
FIG. 3 is an explanatory diagram showing when the bath water level is detected. 2 ... Heat exchanger, 3 ... Electric switching valve, 4 ... Hot water supply pipe to bathtub, 5 ... General hot water supply pipe, 6 ... Vacuum breaker, 7,8 ... Check valve, 9 ... … Switching valve, 10… Pipe, 11…
… Pressure sensor, 12… Bathtub.

Claims (1)

(57) [Scope of utility model registration request] 1. A hot-water bath type in which a bathtub hot water supply pipe from the heat source device to the bathtub is composed of one pipe, and a vacuum breaker and a check valve are arranged in the one bathtub hot water supply pipe. In the bath water heater, a switching valve is provided on the downstream side of the vacuum breaker of the one bathtub hot water supply pipe, and a pipe line extending in a different direction from the vacuum breaker is provided through the switching valve to separate from the vacuum breaker. A sensor for detecting the water level in the bathtub is provided in the pipe extending in the direction, and the pressure sensor is disconnected from the bathtub hot water supply pipe when the switching valve is set to the bath position in order to heat the hot water into the bathtub. High temperature hot water bath water heater.