JPH0354365Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a bath heat retention device, and more specifically, it is used to keep boiled water warm when a bath is boiled using a forced circulation type bath pot that also serves as a hot water supply function. This invention relates to a device for thermal insulation operation.

<Prior art and its problems> FIG. 2 shows a configuration diagram of a conventional device. 1 is a bathtub and 2 is a bathtub. The bathtub 2 is equipped with a heat exchanger 3 for heating the bath and a heat exchanger 4 for supplying hot water, and these heat exchangers 3 and 4 are heated by one burner 5. Heating the bath is
Hot water in the bathtub 1 is forcibly circulated to the bathtub 2 by the circulation pump 6 and heated by the heat exchanger 3. In addition, for hot water supply, water from a water source such as a tap enters the hot water supply heat exchanger 4, where it is heated and discharged.

In such a conventional device, the heated bathtub 1
During thermal operation to keep the hot water inside,
The circulation pump 6 was operated continuously, and the hot water in the bathtub 1 was constantly circulated to the heat exchanger 3 side of the bathtub 2 to maintain heat. In this case, the temperature of the bath is 40℃
Because of this, the thermal power of the burner 5 was adjusted so that the temperature of the water in the heat exchanger 3 did not exceed around 40°C. However, with this method, the hot water supplied through the heat exchanger 4 for hot water supply cannot be raised to a temperature of around 40°C or higher during the heat retention operation, which has the disadvantage that the hot water supply experience during the heat retention operation is poor. It was hot.

In addition, as a device that can heat the bath and supply hot water,
There is a device described in Japanese Patent Application Laid-Open No. 59-15761,
This device requires an extra tank 7, which has the drawback of making the device large and complicated. Also, in 1986,
Publication No. 59032 describes a device that ignites the burner 6 and activates the pump 4 when the bath temperature becomes lower than a set temperature, but this device combines hot water supply with bath heating. It is not assumed that this will be done. In other words, hot water cannot be supplied.

Therefore, the present invention aims to eliminate the drawbacks of the above-mentioned conventional technology, and to provide a device that can effectively keep the bath warm and can also set the hot water supply to any desired temperature without being affected by the bath heat keeping operation. do.

<Means for solving the problem> In order to achieve the above object, the bath warming device of the present invention uses a single burner to serve as an instantaneous heat exchanger for hot water supply and an instantaneous heat exchanger for bath heating. A hot water heating pot with two circuits per can is used to heat the bath water while being forced to circulate through the instant heat exchanger for heating the bath. During operation, the bathtub water forced circulation pump is operated intermittently at regular intervals, and the burner is equipped with a control section 8 that controls combustion in accordance with the set temperature of the hot water being used.

<Function> The control unit 8 operates the pump intermittently at regular intervals during the heat retention operation after heating the bath, and the bath water is intermittently circulated to the instantaneous heat exchanger for heating the bath. Further, during the heat retention operation, combustion is controlled so that the burner reaches the set temperature for hot water supply. That is, during the heat retention operation, the bathtub water is not heated more than necessary due to the intermittent circulation. Furthermore, even when hot water is being supplied during the heat retention operation, hot water can be dispensed at the set hot water supply temperature.

<Example> FIG. 1 is a block diagram showing an example of a bath heat retention device according to the present invention.

1 is a bathtub, and 2 is a bathtub. The bath pot 2 is equipped with an instant heat exchanger 3 for heating the bath and an instant heat exchanger 4 for hot water supply.
The two burners 5 are used for heating. The bath is heated by forcibly circulating hot water in the bathtub 1 to the bath pot 2 by the circulation pump 6 and heated by the heat exchanger 3. To supply hot water, water from a water source such as a tap enters a heat exchanger 4 for hot water supply, where it is heated and discharged. The above is the same as the conventional device. The temperature of the bath is sensed by a temperature sensor 7 and sent to the control section 8. The control unit 8 operates or deactivates the circulation pump 6, burner 5, timer circuit 9, etc. based on information from the temperature sensor 7 and other mode settings. The timer circuit 9 is a circuit for intermittently operating the circulation pump 6 at regular intervals.

When boiling a bath, the switch ignites the burner 5 and starts the circulation pump 6, thereby heating the hot water in the bathtub 1 while being circulated through the circulation path 10. If you want to keep the heat running after heating up the heat, set the mode accordingly.
When the water is boiled to a predetermined temperature, information from the temperature sensor 7 is input to the control section 8, and the timer circuit 9 is activated. By the operation of the timer circuit 9, the circulation pump 6 is intermittently operated for a certain period of time at certain intervals, and the hot water in the bathtub 1 is intermittently circulated and heated. Thereby, the temperature drop in the bathtub 1 can be suppressed to a small level. When the temperature inside the bathtub 1 falls below the set permissible temperature, the temperature sensor 7 detects this, and the control unit 8 stops the operation of the timer circuit, turns on the temperature switch, and continuously operates the circulation pump. Ru.

Hot water is supplied as needed even during the bath heat-retaining operation, but in this case, the hot water supply temperature can be set arbitrarily. Thereby, hot water can be supplied at a desired temperature even during the heat retention operation.
Even if the water supply temperature changes, since the bath is kept warm intermittently, it has little effect on the heat keeping operation.

<Effects> With the above configuration, the present invention has the following features during heat retention operation:
The pump for forced circulation of bath water is operated intermittently at regular intervals, and the burner is controlled to burn according to the set temperature of the hot water being used.
Even when using a hot water supply function bath pot with two circuits in one can that also serves as a burner, hot water can be supplied at a desired temperature even during heat retention operation, and the bath water can also be kept warm.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional device. 1: Bathtub, 2: Bath pot, 3: Instant heat exchanger for bath heating, 4: Instant heat exchanger for hot water supply, 5:
Burner, 6: Circulation pump, 7: Temperature sensor, 8:
Control unit, 9: timer circuit, 10: circulation path.

Claims (1)

[Scope of utility model registration request] Using a bathtub with a hot water supply function and two circuits in one can, which uses a single burner to heat both an instantaneous heat exchanger for hot water supply and an instantaneous heat exchanger for bath heating, the bathtub water can be heated as described above. In a system that heats a bath by forcing circulation through an instantaneous heat exchanger for heating the bath, during the heat retention operation after heating the bath, the pump for forced circulation of bath water is operated intermittently at regular intervals, and the burner is This is a bath heat retention device characterized by being provided with a control section 8 that controls combustion according to the set temperature of hot water to be used.