JP2958341B2 - Automatic hot water filling method in bath water heater and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bath watering method for a bath water heater in which a predetermined hot water and a predetermined amount of hot water are filled in a bathtub when an automatic switch of a remote controller is turned on. It relates to the same device.

[Conventional technology]

A vacuum breaker and a check valve are provided in the bathtub hot water supply line from the heat source unit to the bathtub, and when the automatic switch of the remote control is turned on, the hot water of the temperature set in the remote control is one-way through one line. A bath water heater is known in which hot water is supplied into a bathtub, the amount of hot water is detected by a flow sensor, and when it is detected that the predetermined amount has been reached, the hot water supply is stopped.

[Problems to be solved by the invention]

However, since the conventional bath water heater as described above controls the filling by only the amount of water dropped into the bathtub,
Hot water sometimes overflowed from the bathtub when there was residual water in the bathtub.

An object of the present invention is to provide a hot water supply control method for a bath water heater that can prevent the overflow of bath tub water as described above when hot water is supplied to a bath tub by one pipe.

[Means for solving the problem]

When the automatic switch on the remote control is turned on, the hot water is set in the bathtub and a predetermined amount of water is filled. When the automatic switch is turned on, the pressure is temporarily reduced by the action of a switching switch provided on the hot water supply pipe. A switch is connected to the bathtub to detect whether or not the remaining water in the bathtub is below a certain level. When the remaining water is below a certain level, automatic filling is performed. When the remaining water is above a certain level, the remote control notifies the presence of the remaining water in the bathtub. In addition, the automatic hot water filling is stopped.

[Action]

When the present invention turns on the automatic switch of the remote control,
Rather than immediately starting to supply hot water to the bathtub, the residual water level in the bathtub is detected before the hot water supply operation to the bathtub, and the hot water overflows from the bathtub when a certain level or less, for example, a predetermined amount of hot water is supplied. The hot water supply operation is started only when the level is below the level where there is no danger, and when there is residual water above a certain level, the fact is notified from the remote control and the automatic hot water filling is stopped. Overflow can be prevented. In particular, since the hot water supply is temporarily interrupted by the switching valve provided in the hot water supply pipe and the pressure sensor is connected to the bathtub, the pressure of the water supply (the pressure of the water supply) is not applied to the pressure sensor. For this reason, the pressure sensor does not need exceptional pressure resistance, and the pressure sensor can accurately detect the pressure (water level) without being affected by the static pressure or the dynamic pressure of the supply water.

〔Example〕

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

FIG. 1 is a flowchart showing an embodiment of the present invention,
FIG. 2 is a water system diagram showing a configuration of a bath water heater to which the present invention is applied, and FIGS. 3 to 5 are explanatory diagrams showing a configuration of a remote controller.

Prior to the description of the present invention, the configuration of a bath water heater to which the present invention is applied will be described with reference to FIG.

In FIG. 2, 1 indicates a water supply pipe, 2 indicates a heat exchanger,
The hot water heated by the heat exchanger 2 is configured to be selectively supplied to the hot water supply line 4 to the bathtub 12 and the general hot water supply line 5 by the electric switching valve 3.

In the hot-water supply line 4 to the bathtub, a vacuum breaker 6 and check valves 7, 8 are disposed upstream and downstream of the vacuum breaker 6, and a motor-operated switching valve 9 is provided downstream of the vacuum-breaker. A pipe 10 extending in a direction different from that of the vacuum breaker is provided through a pipe 9, and a pressure sensor 11 for detecting a water level in the bathtub is provided in the pipe 10. With such a configuration, when the electric switching valve 9 is switched to the pressure sensor side, the hot water supply from the heat exchanger 2 to the bathtub 12 is temporarily interrupted. Bathtub without being affected by pressure
The water level in 12 can be detected.

The water supply pipe 1 has a flow sensor (flow rate sensor) 13.
And a hot water supply temperature detection sensor 14, a hot water supply pipe is provided with a hot water supply temperature detection sensor 15, and a general hot water supply pipe 5 is provided with a flow sensor 16; The data is input to the microcomputer control unit 17 built into the device, and the remote control 18
When the automatic switch of the remote controller 18 is turned on after the desired hot water temperature is set, the microcomputer control section proportionally controls the combustion of the burner 19 and fills the hot water at the set temperature into the bathtub 12, and fills the hot water. When the flow sensor 13 detects that a certain amount has been reached, the filling of the bathtub is stopped.

In the present invention, when the automatic switch of the remote controller is turned on, instead of immediately starting hot water supply to the bathtub, the residual water level in the bathtub is detected before the hot water supply operation to the bathtub, and when the remaining water level is below a certain level. Only the hot water supply operation is started, and when there is remaining water above a certain level, the fact is notified from the remote controller and the automatic hot water filling is stopped.

That is, the remote controller has a display column 18a for displaying that there is residual water as shown in FIG. 3 or a speaker 18 for notifying by voice that there is residual water as shown in FIG.
a 'or a buzzer 18a "for displaying the presence of residual water with a buzzer is installed, and when the automatic switch 18c is turned on, the switching valve 9 is switched to the pressure sensor 11 side as shown in FIG. It detects whether the remaining water in the bathtub is below a certain level, and when it is below a certain level, switches the switching valve 9 to the filling side to perform automatic filling, and when the remaining water in the bathtub is above a certain level, The microcomputer controller 17 receives the signal and notifies the remote controller 18 of the signal, and stops the automatic filling operation.

3 to 5, reference numeral 18b denotes an operation switch, 18d denotes a high-temperature hot water switch, and 18e denotes a hot water temperature setting up / down switch.

〔The invention's effect〕

As described above, according to the present invention, when there is residual water of a certain level or more in a bathtub, this is notified to the user and automatic filling is stopped, so that hot water overflows from the bathtub. There is an effect that can be prevented. In addition, the present invention can be applied to a bath water heater having a structure in which water pressure is applied to a pipeline for supplying water to a bathtub, and a switching valve is provided so that the water pressure of hot water is not applied to a pressure sensor. Therefore, no special pressure resistance is required for the pressure sensor.

[Brief description of the drawings]

FIG. 1 is a flowchart showing one embodiment of the present invention, and FIG.
Fig. 3 is a water system diagram showing an example of a bath water heater to which the present invention is applied, and Figs. 3 to 5 are explanatory diagrams showing configuration examples of a remote controller. 2 ... heat exchanger, 3, 9 ... electric switching valve, 4 ... hot water supply line to the bathtub, 5 ... general hot water supply line, 6 ... vaccum breaker, 7, 8 ... check valve, 11 ... Bathtub water level detection pressure sensor, 13, 16 ... Flow sensor, 14 ... Feedwater temperature detection sensor, 15 ... Hot water temperature detection sensor, 17 ... Microcomputer control unit,
18 ... Remote control.

Claims (2)

(57) [Claims] 1. A hot water supply line from a bath water heater to a bathtub is constituted by a single line. When an automatic switch of a remote controller is turned on, a set hot water temperature and a predetermined amount of hot water are filled in the bathtub. In the bath water heater, a pressure sensor is connected in advance from the one pipe line via a switching valve, and when the automatic switch is turned on, the switching valve is operated to activate the pressure sensor. The water level in the bathtub is detected by communicating with the bathtub, and when the remaining water level in the bathtub is below a predetermined level, the switching valve is restored and the pressure sensor is shut off from the one pipe line and the hot water is filled. Automatic hot watering in a bath water heater, wherein when the remaining water level in the bathtub is equal to or higher than a predetermined level, the remote control notifies the user of "water remaining" and stops the automatic hot watering. 2. A heat exchanger for hot water supply connected to a water supply pipe,
A bath water heater having a hot water supply pipe connecting an outlet of the heat exchanger and a bathtub, wherein water pressure in the water supply pipe is applied to the hot water supply pipe via the heat exchanger; It has an electric three-way switching valve that is provided in the middle of the pipe and is automatically operated via a remote controller, and a pressure sensor for detecting a water level branched and connected from the hot water supply pipe via the electric three-way switching valve. When an automatic filling is instructed by the operation of the remote controller, the electric three-way switching valve is in a communicating state for connecting the bathtub to a pressure sensor, and the pressure sensor detects the level of residual water in the bathtub. Bath hot water supply, wherein when the pressure sensor is in communication with the bathtub, the hot water supply heat exchanger is cut off from communication with the hot water supply conduit of the bathtub. Hot water filling in the vessel Location.