JPS60253756A - Automatic additional heater for bath - Google Patents

Abstract

PURPOSE:To automatically stop additional heating when an appropriate water temperature is reached, by a construction wherein a temperature detector for operating a stopping means for hot water circulated between a heat exchanger and a bath heater is fitted at such a position that the hot water temperature thereat is made equal to an average hot water temperature obtained by stirring the water contained in a bathtub. CONSTITUTION:In a device for automatically heating a bath by a bath heater heated by a heat source such as a gas heater, the temperature detector 13 is fitted at such a position that the hot water temperature thereat is equal to the average hot water temperature obtained on stirring the water contained in the bathtub. Hot water for heating is circulated in the order of the heat exchanger 2, a pipe 10, a heat-exchanging coil 8, a pipe 9, a tank 1 and the heat exchanger 2 by a circulating pump 3. On the other hand, bath water is naturally circulated in the bath heater 5 to be heated through heat exchange with the coil 8. When an appropriate hole water temperature is reached, it is detected by the detector 13, and a controller 12 operates a shut-off valve 14 to cut off the circulating water, and additional heating is stopped. When the hot water temperature in the bathtub 4 is lowered to a predetermined temperature, this is detected by the detector 13, the valve 14 is again opened, and additional heating is restarted. These operations are repeated thereafter.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a device for automatically boiling a bath using a gas heater, gas hot water heater, etc. as a heat source and using a bath heater heated by this heat source. It is related to.

Conventional Structure and Problems Conventionally, this type of bath water reheating device relies on the user's sensations to heat the bath. This meant that I had to stir the bath water several times before it reached the right temperature, or I had to boil it too much, causing the bath water to become too hot. In any case, it is very troublesome for the user to keep the bath water at an appropriate temperature.

In addition, in recent years, in bath units equipped with bath pots,
There is a trend towards using sensors to automatically heat the bath.

The conventional bath flushing device as described above will be described below with reference to the drawings.

FIG. 3 shows a conventional bath replenishing device for a gas heater. In FIG. 3, 1 is a tank for replenishing circulating water, and 2 is a heat exchanger for heating the circulating water. 3 is a pump that circulates circulating water, and heat exchanger 2
and tank 1. 4 is a bathtub, and a bath heater 5 is attached to the bathtub 4.

The bath heater 5 is attached from the inside of the bathtub 4 with connection screws 86.
, is fixed to the bathtub 4 by a connecting screw B7, and the bath water in the bathtub 4 is circulated as shown by the arrow through the connecting screw 6.7. Furthermore, a heat exchange coil 8 is attached inside the bus heater 5, and the tank 1 is connected to a pipe A9 such as a copper pipe provided with a heat insulating material on the outer periphery, and the heat exchanger 2 is connected to the outer periphery of the pipe A9. They are connected to each other by pipes B10 such as copper pipes provided with a heat insulating material. Further, a thermistor 11 is attached to the outlet of the heat exchanger 2, and a thermistor 12 is attached to the outlet of the heat exchanger 2.
is a control device.

The operation of the bath refilling device configured as described above will be explained. The circulating water heated by the heat exchanger 2 is circulated by the pump 3.

In other words, the circulating water passed through the pipe B10 and heated,
It passes through a heat exchange coil 8 provided in the bath heater 5, and then returns to the tank 1 through a pipe A9. After that, repeat the above operation. In addition, a heating circuit may be attached in parallel to the circulation circuit used for bathing, and used for heating. Heat exchanger 2 is used when the load is small, such as when heating a bath when the bath water temperature is high.
As the temperature of the circulating water heated by heat exchanger 2 increases,
A thermistor 11 attached to the outlet of the heat exchanger 2 senses this and notifies the control device 12, which controls the combustion of the burner that heats the heat exchanger 2, thereby controlling the temperature of the circulating water.

Next, the bath heater 5 will be explained. When heated circulating water circulates through a heat exchange coil 6 in a bath heater 5, heat is exchanged with bath water filling the bath heater 5. The heated bathtub water floats to the top and flows into the bathtub through the connecting screw B7, and at the same time, the bathwater flows into the bath heater 5 through the connecting screw B7, displacing the bath. go. In such a conventional bath reheating device, the temperature of the hot water in the bathtub 4 is not directly detected, but the temperature of the hot water returned from the bathtub 4 and heated by the heat exchanger 2 is detected by the sensor 11. Therefore, the user may have to stir the bath water several times to bring it to the right temperature, or the user may have to boil the water too much and have to warm it up with water, which can be very difficult for the user. What's so troublesome? , :.

Furthermore, in a bath unit equipped with a bath kettle, there is a device that automatically boils the bath using a temperature detector. This is a device that attaches a temperature detector to the heat exchanger installed in the appliance. When the temperature of the temperature detector reaches a certain temperature, combustion is stopped, and at that point, if you stir the bath, it will reach the appropriate temperature. This is the function of being present. In this case, the temperature sensor does not directly detect the temperature of the bathtub water, so it is susceptible to the initial temperature of the bathtub water, the outside temperature, and the amount of water in the bathtub, and has the disadvantage that the temperature at the time of boiling tends to vary. Was.

Purpose of the Invention The present invention solves the above-mentioned problems by automatically shutting off the circulating water when the temperature detector reaches a certain temperature, stopping the flushing, and stirring the bath water. The purpose is to ensure that the temperature is at the appropriate temperature, and that the water volume in the bathtub, the circulation flow rate, and the installation of the bath heater do not depend on the position, and that the temperature will always be at the appropriate temperature if you stir the bath at the time you stop stirring the water. shall be.

Structure of the Invention In order to achieve the above object, the automatic bath replenishing device of the present invention includes a tank for replenishing circulating water, a heat exchanger that communicates with the tank and heats the replenishment water, and is connected to the heat exchanger, A bath heater that heats a bath using circulating water, and a circulating water circulation circuit that connects the bath heater to which the bath water is heated by the bath heater, the heat exchanger, and the bath heater. It is equipped with a circulation pump and a temperature detector that is attached to the bath heater and operates a means for stopping the circulating water at a predetermined temperature, and the temperature sensor is configured to generate a temperature that is the same as the average temperature of the bath water when it is stirred. It is configured to be installed in a place where the water boils, and automatically stops stirring when the bath is boiling, and when the bath is stirred.
It is at an appropriate temperature.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Note that the same parts as in FIG. 3 of the conventional example described above are given the same reference numerals, detailed explanations are omitted, and different parts will be mainly explained. In FIGS. 1 and 2, reference numeral 13 denotes a temperature detector attached to the surface of the case of the bath heater 5, and is positioned at a location where the temperature is the same as the average temperature of the bath water when it is stirred. Reference numeral 14 denotes a shield provided in the middle of the pipe B10.

In the above configuration, the heat exchanger 2 - pipe 1 - heat exchange coil 8 - pipe 9 - tank 1 - heat exchanger 2 and hot water for heating are circulated by the circulation pump 3.

On the other hand, as the bath water naturally circulates within the bath heater 5, it exchanges heat with the heat exchange coil 8 and is heated.

Then, as the water temperature in the bathtub 4 rises, it follows that,
When the temperature of the temperature sensor 13 also rises and the bath water temperature reaches the appropriate temperature, the temperature sensor 13 detects this and the control device 12
By notifying the operator and activating the shutoff well 14, the circulating water is shut off and the recharging is stopped. And bathtub 4
When the temperature of the water in the bathtub decreases and reaches a certain temperature, the temperature sensor 13 detects this, opens the bathtub 14 again, starts reheating, and repeats this from now on. The temperature of the water is kept at an appropriate temperature by stirring.

Next, the mounting position of the temperature sensor 13 will be explained. In FIG. 3, heated circulating water sent from pipe B10 passes through heat exchange coil 8 and is sent to pipe 80, where it exchanges heat with the bathtub water in bath heater 5, thereby heating the bath. It's boiling up. Therefore, the point equal to the average water temperature when stirring the bathtub is approximately 25 cm below the longitudinal center of the bath heater and the center of the width h, and the temperature sensor is placed at this location. 13
Attach. When installed in this position, the shape of the bathtub, the flow rate of circulating water, the amount of water in the bathtub, the bathtub 4 of the bath heater 5,
The installation is not affected by the position and the temperature is equal to the average stirred temperature of the bath water in the bathtub 4, so when the temperature of the temperature sensor 13 reaches a certain temperature, it detects this and stops stirring. . At that point, if you stir the bath water, the water temperature will be at the appropriate temperature.

In the above installation, the surface of the bath heater 5 below the position is
Since there is not much heat exchange between the bathtub water and the heat exchange coil 8, the temperature rises slowly and the temperature of the bathtub water cannot be detected properly. , is inappropriate.

Furthermore, due to the location, the surface of the upper bath heater 5 exchanges too much heat and is easily affected by the circulating water flowing through the heat exchange coil 8. In the heat source device of this embodiment, combustion is controlled by detecting the temperature of circulating water according to the load. In other words, depending on the conditions, for example, if the temperature of the bathtub water approaches the appropriate temperature, the temperature of the circulating water will rise, and the thermistor 11 will sense this and the control device 12 will throttle the combustion and increase the temperature of the circulating water. prevent. If the temperature sensor 13 is attached to the upper part of the surface of the bath heater 5, even though the temperature of the bath water is rising as described above, the temperature of the circulating water will drop to restrict combustion, and therefore The surface temperature of the bath heater 5 may also drop. This is also an inappropriate location for mounting the temperature sensor 13, since the temperature of the bathtub water cannot be accurately detected.

Moreover, since circulating water directly circulates through the pipes A10 and B9, the temperature changes rapidly, making it difficult to attach the temperature detector 13.

In the above example, the temperature sensor was attached to the surface of the bath heater at a point where the temperature is the same as the average water temperature in the bathtub, but if it is possible to accurately detect the hot water temperature in the bathtub, The position need not be taken as above.

In this way, by attaching a temperature sensor to the surface of the bath heater at a point where the temperature is the same as the average water temperature in the bathtub, the bath will automatically stop heating when the temperature of the temperature sensor reaches a certain temperature. When the bath water is stirred, the temperature is at the appropriate temperature, so the user does not have to stir the bath water several times until it reaches the appropriate temperature, or use water to warm the bath water if it gets too hot. You can easily boil a bath.

As described in detail, according to the automatic bath heating device of the present invention, the user only needs to start the device, the bath will automatically boil, and the bath water will be stirred to the appropriate temperature. Furthermore, since the water temperature can be maintained at an appropriate temperature even after the bath is finished, it saves the user's time and effort, and prevents stuttering and wasted fuel and water due to overboiling the bath.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an automatic bath water reheating device which is an embodiment of the present invention, Fig. 2 is a front view of the same bath heater and temperature detector, and Fig. 3 is a diagram of a conventional bath reheating device. FIG. 1... Tank, 2... Heat exchanger, 3... Pump, 4...
- Bathtub, 5...Bath heater, 13...Temperature detector, 14...Sharai (means).

Claims (1)

[Claims] A tank for replenishing circulating water, a heat exchanger that connects to the tank and heats the circulating water, a bath heater that connects to this heat exchanger and uses the circulating water to boil a bath, and this bath heater are installed. A bathtub in which bathwater is heated by a bath heater; a circulation pump installed in a circulating water circulation circuit such as a pipe connecting the heat exchanger and the bath heater; and a temperature detector for activating a means for stopping circulating water, the temperature detector being installed at a location where the temperature of the bath water is the same as the average temperature when the bath water is stirred.