JPH06159801A - Bath boiler device equipped with one drum two circuit hot water supplying function - Google Patents

Abstract

PURPOSE:To provide a bath device equipped with one drum two circuit hot water supplying function which does not reduce the durability of the burner even when a bath follow-up heating operation, etc., is solely operated, and does not reduce the thermal durability of the instant heating type heat-exchanger, and also by which the follow-up heating operating time is not extended. CONSTITUTION:An instant heating type heat-exchanger for bath follow-up heating 31 is arranged at a location being away from flames, and an instant heating type heat-exchanger for hot water supply 41 is arranged at a location being closer to the flames, and those two heat-exchangers are provided in one heating drum body 20 for the title bath boiler device equipped with one drum two circuit hot water supplying function. Then, in the instant heating type heat-exchanger for hot water supply 41, a temperature sensor 50 to detect the temperature of water in the heatexchanger is provided, and at the same time, a discharge path 60 is connected from a hot water outgoing path 43 of a hot water supply circuit 40 to a bath circulating circuit 30, and when the temperature sensor 50 on the instant heating type heat- exchanger for hot water supply 41 side exceeds a previously determined specified temperature at the time of bath follow-up heating operation, a discharge of a specified quantity of hot water for a specified period of time is performed from the hot water circuit supply 40 to a bathtub through the discharge path 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-can, two-circuit bath kettle device with a hot-water heat exchanger.

[0002]

2. Description of the Related Art Conventionally, there has been provided a bath kettle device with one can and two circuits hot water supply function in which an instantaneous heating type heat exchanger for bath reheating and an instantaneous heating type heat exchanger for hot water supply are arranged in one heating can body. There is. In this bath heater device, when either the hot water supply operation or the bath reheating operation is operated, the burner is burned regardless of the presence or absence of the other operation.

[0003]

However, in the above-mentioned conventional bath heater device, for example, when only one of hot water supply and bath reheating is performed, the instantaneous heating type heat exchanger on the non-operating side is operated. Was heated to a high temperature, and as a result, there was a problem that durability was lowered and water leakage and the like occurred. Also,
In order to prevent this, for example, when the non-use instantaneous heating heat exchanger reaches a certain temperature or higher during isolated operation, the burner is extinguished during that time to prevent further increase in temperature. However, in that case, there is a problem that the reheating time becomes longer by that amount, and the number of times the burner is turned on and off increases, and the durability of the burner also deteriorates.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, and does not reduce the durability of the burner even when the bath reheating operation or the like is independently operated, and the thermal durability of the instantaneous heating heat exchanger is improved. It is an object of the present invention to provide a bathtub device with a one-can, two-circuit hot water supply function that does not lower the temperature and does not extend the reheating operation time for a long time.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, a one-can, two-circuit bath heater with a hot water supply function according to the present invention provides a momentary heat exchanger for reheating a bath to a person far from the flame and at the moment of hot water supply. A bath kettle device having a one-can two-circuit hot water supply function, in which a heating type heat exchanger is arranged closer to the flame, is provided in one heating can body, and water inside the instantaneous heating type heat exchanger for hot water supply is used. A temperature sensor for detecting the temperature of the hot water supply circuit is connected and a drop path is connected from the hot water supply circuit to the circulation circuit for bath reheating, and the temperature sensor on the side of the instantaneous heating heat exchanger for hot water supply during bath reheating operation is When the temperature exceeds a predetermined constant temperature, the hot water supply circuit drops the water for a predetermined time or a certain amount of water through the drop passage.

[0006]

[Operation] When the bath reheating operation is started, the temperature detected by the temperature sensor on the side of the instantaneous heating heat exchanger for hot water supply is monitored,
When the detected temperature exceeds a certain temperature, hot water for hot water supply is dropped from the hot water supply circuit through the drop path to the bath reheating circulation circuit. Therefore, the water in the hot water supply instantaneous heating heat exchanger of the hot water supply circuit circulates, absorbs heat, and the temperature of the hot water supply instantaneous heating heat exchanger is reduced.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the device of the present invention, and FIG. 2 is a flow chart of control by a controller.

Reference numeral 10 is a bathtub, and 20 is a heating can body. Bathtub 10
A circulation path 30 for bath reheating is provided inside the heating can body 20. On the other hand, a hot water supply circuit that passes through the heating can body 20.
40 are piped.

The heating can body 20 is provided with a petroleum burner 21, and the heating can body 20 has an instantaneous heating heat exchanger for hot water supply of the hot water supply circuit 40 closer to the flame by the petroleum burner 21. 41 is arranged, and the instantaneous heating heat exchanger 31 for bath reheating of the bath reheating circuit 30 is arranged on the side far from the flame by the oil burner 21. The circulation circuit 30 for bath reheating is provided with a circulation pump 32, a bath temperature sensor 33, a water flow switch 34, and the like. The hot water supply circuit 40 includes a hot water supply instantaneous heating type heat exchanger 41, an inlet 42, and a hot water outlet 43.
The inlet channel 42 is provided with a water amount sensor 42a and an inlet temperature sensor 42b. Further, the hot water passage 43 is provided with a water amount adjuster 43a, a small tank 43b, and the like.

In the present invention, the boiling prevention temperature sensor 50 for detecting the temperature of the water inside is provided at the bend portion of the instant hot water heat exchanger 41 for hot water supply that is most likely to boil. In addition, a drop path 60 is provided that connects the hot water discharge path 43 to the bath reheating circulation circuit 30. The drop path 60
Water drop sensor 61, solenoid on-off valve 62, check valve 63
Is provided. Reference numeral 70 denotes a controller of the apparatus, which receives an instruction from a remote controller (not shown), inputs information from each sensor, and issues an operation control instruction of each part of the apparatus according to a predetermined program.

One of the control configurations by the controller 70 is to monitor the temperature information from the boiling prevention temperature sensor 50 during the bath reheating operation, and the temperature by the temperature sensor 50 is set to a predetermined constant temperature, for example, Above 95 ° C,
The electromagnetic on-off valve 62 of the drop path 60 is opened, and the drop command is issued until the drop water amount sensor 61 detects a certain amount.

That is, the control of the bath reheating operation by the controller 70 will be described according to the flowchart of FIG. 2. Now, when the bath reheating operation is turned on (Yes in S1), the controller 70 causes the hot water supply instantaneous heating heat exchanger. Input the temperature information from the boiling prevention temperature sensor 50 provided in 41 and monitor whether the temperature T of the temperature sensor 50 is 95 ° C or lower (S2). When it exceeds 95 ° C (NO in S2), drop it. The solenoid on-off valve 62 on the path 60 is opened (S3). When the drop water amount sensor 61 detects a constant amount of water (S4
Then, the solenoid on-off valve 62 is closed (S5). The electromagnetic on-off valve 62 is opened, and a certain amount is dropped from the drop path 60 through the bath reheating circulation circuit 30 into the bath tub 10, whereby the heat exchanger for instantaneous hot water supply of the hot water supply circuit 40 is heated.
A water flow is also generated in 41, and as a result, water is introduced from the water inlet 42 to cool the heat exchanger 41 appropriately. This prevents boiling of water in the heat exchanger 41 and prevents the heat exchanger 41 from being heated to a high temperature.

In the above embodiment, the drop path
Although the electromagnetic opening / closing valve 62 of 60 is closed by the water amount sensor 61 detecting a constant water amount, the electromagnetic opening / closing valve 62 may be closed after a lapse of a fixed time.

During the hot water supply independent operation, the instantaneous heating type heat exchanger 31 for bath heating is farther from the flame of the burner 21 than the heat exchanger 41 for instantaneous heating for hot water supply, so it is not heated significantly. No large thermal stress occurs. Further, since water is also supplied to the heat exchanger 41 for instantaneous heating for hot water supply, a predetermined constant temperature (95
℃) is rarely exceeded. In the bath reheating single operation, while the temperature of the water circulating in the bath reheating circuit 30 is low, the endothermic coefficient of the bath reheating instantaneous heating heat exchanger 31 is large, so the boiling prevention temperature sensor 50 However, when the temperature of the water circulating in the bath-heating circuit 30 rises, the endothermic coefficient of the bath-heating instantaneous heating heat exchanger 31 increases. Since the temperature decreases, the boiling prevention temperature sensor 50 on the side of the heat exchanger 41 for instantaneous heating for hot water supply may exceed a certain temperature (95 ° C.).

[0015]

According to the present invention having the above-described structure and operation, the one-can, two-circuit hot water bath device with a hot water supply function according to the first aspect of the present invention makes the instant heating type heat exchanger for bath reheating far from the flame. In this case, a one-can, two-circuit bath heater with a hot water supply function is provided in which one hot water supply instantaneous heating heat exchanger is arranged close to the flame. A temperature sensor for detecting the temperature of the internal water is installed in the water heater, and a drop passage is connected to the bath circulation circuit from the hot water supply circuit so that the temperature of the instantaneous heating heat exchanger for hot water supply during bath reheating operation When the sensor exceeds a predetermined temperature, it is configured to drop the hot water supply circuit from the hot water supply circuit to the bathtub for a certain time or a certain amount of water through the drop path. On Or it is, without or reduce combustion input, or Reheating without protracted time, it is possible to prevent abnormal temperature increase of the heat exchanger of the hot water supply side. Therefore, in the device of the present invention, the durability of the instantaneous heating type heat exchanger can be sufficiently improved without significantly lowering the reheating efficiency during the single reheating operation.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a device of the present invention.

FIG. 2 is a flowchart of control by a controller.

[Explanation of symbols]

 10 Bathtub 20 Heating canister 21 Burner 30 Circulation circuit for bath reheating 31 Instantaneous heating type heat exchanger for bath reheating 40 Hot water supply circuit 41 Instantaneous heating type heat exchanger for hot water supply 43 Hot water supply channel 50 Boiling prevention temperature sensor 60 Drop path 61 Water drop sensor 62 Electromagnetic on-off valve 70 Controller

Claims (1)

[Claims] 1. A single heating can is provided by arranging an instantaneous heating type heat exchanger for bath reheating in a direction far from the flame and an instantaneous heating type heat exchanger for hot water supply in a direction close to the flame. A bath kettle device with two-circuit hot water supply function, wherein a temperature sensor for detecting the temperature of internal water is provided in the instantaneous heating heat exchanger for hot water supply, and a circulation circuit for reheating the bath from a hot water supply path of the hot water supply circuit. When the temperature sensor on the side of the instantaneous heating heat exchanger for hot water supply exceeds a predetermined constant temperature during the bath reheating operation, the drop passage is connected to the hot water supply circuit from the hot water supply circuit to the bathtub for a certain time or a certain amount of water. A one-can, two-circuit hot-water bath device with a hot water supply function, which is configured to be dropped.