JPS61228256A - Forced circulation type additional heater for bathtub - Google Patents

Abstract

PURPOSE:To enable the temperature of hot water to be quickly raised in addi tional heating the hot water as well as raise the cleaning efficiency of bathtub by a method in which a water stop valve is provided to one path of a water circulating path consisting partly of paths and a filter is provided to the other path, and the water stop valve is opened when additional heating is performed but closed during cleaning period. CONSTITUTION:When additional heating is selected by a remote control switch 17, a solenoid valve 15 for water is always opened, and combustion of a gas burner 8 is controlled by temperature detection of a thermister. Water is circulated between a water circulating path 2 and a bathtub 3 by a pump 6, and water returning from the bathtub 3 is flowed to a path with the valve 15 and a path with a filter 16. The temperature to hot water in the bathtub 3 can be quickly raised because water can freely pass through the paths due to opening the valve 15 provided in the path. When cleaning is selected, the valve 15 is closed and the burner 8 is also stopped. The returning water of the bathtub 8 is all passed through the filter 16 to remove dust and scale, and water in the bathtub 3 is also cleaned.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a forced circulation bath reheating device capable of purifying hot water in a bath.

Conventional technology A conventional forced circulation bath reheating device has a configuration as shown in Figure 2, where 1 is the main body case, 2 is the water circulation path,
It communicates with the bathtub 3 via a water inlet 4 and a water outlet 6. The end pump is used to forcefully circulate water. 7
is a heat exchanger installed in the water circulation path 2 and the gas burner 8
It is installed opposite to the heater to heat the water effectively. Reference numeral 9 indicates an igniter for a gas burner 8, which is a heating means, and 1o indicates a thermistor that detects the temperature of circulating water.

11 is a gas solenoid valve that controls the amount of gas supplied to the gas burner 8.

Reference numeral 12 denotes a combustion chamber containing a gas burner 8 and a heat exchanger 7, and an exhaust duct 13 is provided above the combustion chamber 12. Reference numeral 14 denotes an exhaust fan provided in the exhaust duct, which forcibly exhausts air from the combustion chamber. 2o is a filter provided at the water return port of the bathtub 3.

The operation of the forced circulation bath reheating device configured as above will be described below.

The thermistor 10 detects the temperature of the water in the water circulation path 2,
When the detected temperature is below a predetermined Em degree, the gas burner 8 is burned and the pump 6 is operated.

heat the water and circulate it. At this time, bathtub 3
A filter 20 provided at the return port removes relatively large debris such as hair and lint. When the water reaches the predetermined temperature of 51 degrees, it is detected by the thermistor 1o, and combustion in the gas burner 8 and operation of the pump are stopped.

Problems to be Solved by the Invention However, in the above configuration, water purification is performed simultaneously with water heating, and only one of them cannot be selected arbitrarily. In addition, in order to quickly raise the temperature of the water in the bathtub, it is essential to circulate the water efficiently, but permanently installing a filter in the water circulation path prevents water circulation due to the fluid resistance of the filter. This is inconvenient because it worsens the Furthermore, in order to increase the purification effect, it is necessary to use a filter with excellent purification action, but such filters generally have a large fluid resistance, so they are not suitable for use in the forced circulation bath reheating device of the above configuration. It is.

The present invention solves the above-mentioned problems, and allows the user to arbitrarily select water purification and reheating.The present invention is a forced circulation type that has a high purification effect when purifying water, and quickly raises the water temperature when reheating. The purpose is to provide a bath reheating device.

Means for Solving the Problems In order to achieve the above object, the forced circulation bath reheating device of the present invention constitutes a water circulation path for circulating water in the bathtub, and connects the water circulation path to the light path. is provided with a pump for forced circulation of water and a heating means for heating the water, and at least a part of the water circulation path is configured with two paths, one path is provided with a water cutoff valve, and the other path is provided with a water cutoff valve. A filter is provided in the path, and the water cutoff valve is opened when reheating is performed, and the water cutoff valve is closed when water is purified.

Function: Due to the above-described structure, when reheating, the water cutoff valve is opened and the circulating water can smoothly pass through the path provided with the water cutoff valve. Therefore, the water in the bathtub is efficiently circulated, and the temperature of the water in the bathtub increases quickly.

When purifying water, the water shutoff valve is closed, and the circulating water passes through all the paths provided with filters, so water is effectively purified. A forced circulation bath reheating device according to an embodiment will be described with reference to the drawings. Figure 1 shows part 1 of the present invention.
This is a configuration diagram of a forced circulation bath reheating device according to an embodiment, and the same components as those in the conventional technology are denoted by the same numbers, and explanations thereof will be omitted.

There are two routes between the water inlet 4 and the pump 6 in the water circulation route 2, one route is provided with a water electromagnetic valve 16 which is a water cutoff valve, and the other route is provided with a filter 16. In addition, this filter 16 is garbage.

A filter that is highly effective in removing dirt and the like is used and is removably provided on the surface of the main body case 1 for easy removal and cleaning. Reference numeral 17 is a remote control switch that allows the user to set reheating, purification, and stop as desired.

Next, the operation will be described when the remote control switch 17 is selected for reheating and purification.

(1) When reheating is selected with the remote control switch 17, the water solenoid valve 16 is always open, and the combustion of the gas burner 8 is controlled by the temperature detection of the thermistor, and combustion occurs when the water temperature is lower than a predetermined temperature. Stops at temperatures above . Water is forcibly circulated between the water circulation path 2 and the bathtub 3 by a pump 6, and the water returned from the bathtub 3 is branched into two at the water inlet 4, one of which goes to a path provided with a water electromagnetic valve 16. The other flows into a path provided with a filter 16, joins in front of the pump 6, and returns to the pump 6. At this time, it is difficult for water to pass through the path where the filter 16 is installed due to the large fluid resistance, but since the water solenoid valve installed in the other path is open, water can freely pass through this path, so water circulation is possible. It does not get worse, and the temperature of the water in the bathtub 3 rises quickly.

(2) When purification is selected with the remote control switch 17, the water solenoid valve 15 is always closed and the gas burner 8 is also always stopped. Note that water is forcibly circulated by a pump 6. At this time, all the water returned from the bathtub 3 passes through the filter 16 and becomes waste.

Scaling and the like can be quickly removed, thereby purifying the water in the bathtub 3.

As described above, the forced circulation bath reheating device of this embodiment operates, so even if the filter 16, which is highly effective in removing dust, scale, etc. and has a large resistance to water flow, is used, water circulation is reduced during reheating. The forced circulation type bath reheating device of the present invention has been described in detail. A configuration in which at least part of the water circulation route has two routes, a water cutoff valve is provided in one route and a filter is provided in the other route, the water cutoff valve is opened during reheating, and the water cutoff valve is closed during water purification. Therefore, even if a filter is used that has a high resistance to water flow and is highly effective in removing dirt and grime, the water flow can smoothly pass through a path equipped with a water cutoff valve, reducing water circulation. Furthermore, when purifying water, all the circulating water passes through the filter, so it can be purified very quickly.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a forced circulation type bath reheating device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a conventional forced circulation type bath reheating device. 16... Water solenoid valve (water-shutoff valve), 16...
····filter.

Claims (1)

[Claims] A water circulation path for circulating water in the bathtub is provided, the water circulation path is provided with a pump for forced circulation of water, and a heating means for heating the water, and at least a part of the water circulation path is A forced circulation system with a water cut-off valve in one route and a filter in the other, with the water cut-off valve opened during reheating and closed during water purification. Type bath reheating device.