JP3538859B2 - Hot water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the control of bath water in a hot water supply / room heating system.

[0002]

2. Description of the Related Art As shown in FIG. 5, for example, a conventional hot water supply / heating apparatus includes a heating pump 1 for circulating hot water for heating, a heating heat exchanger 2 for heating the hot water by a burner (not shown), A bath heat exchanger 4 and a closing device 5 are provided in a bypass circuit 3 for heating. Further, a bath pump 7 for feeding bath water from the bath 6 to the bath heat exchanger 4, a flow detector 8 for detecting flowing water of the bath, and a temperature detector 9 for detecting the temperature of the bath water. Are provided in the bath circuit 10.

[0003] A hot water supply circuit 11 for heating hot water, a hot water supply circuit 11 for supplying hot water at a set temperature or a set water level bath 6 by using the hot water supply circuit 11 and a bath circuit 10, and both circuits 10, 11 There is a hot water circuit 12 in communication. The hot water circuit 12 is provided with an on-off valve 13. The remote control 14 for remote operation includes a reheating switch 15 for starting and stopping the heating of the bath water, an automatic switch 16 for automatically supplying hot water to the bath 6, and a temperature for setting the bath temperature. There is a setting switch 17. Each component is electrically connected to the control device 18 by a broken line in the figure.

The operation will be described. Remote control 14
When the automatic switch 16 is pressed, the automatic operation starts. The on-off valve 13 is opened, heated by the hot water supply circuit 11 so as to reach the temperature set by the temperature setting switch 17, and dropped into the bathtub 6 via the hot water circuit 12 and the bath circuit 10 having the set water amount or the set water level. Be included. In addition, hot water circuit 1
2 and does not have a function of automatically supplying hot water to the bathtub 6, but there is also an automatic boiling type in which bathtub water is boiled to a set temperature.

FIG. 6 shows a sequence flow relating to the driving of the control device 18. When the automatic operation is completed with the sequence number A1 shown on the left shoulder and the driving switch 15 is turned on at A2, the control device 1 receiving this signal turns on.
8 operates the bath pump 7 in A3. If there is bathtub water in the bathtub 6, the bathtub water is circulated through the bath circuit 10, and the running water detector 8 is turned on at A4.

[0006] Then, at A5, the closing device 5 is opened, and the heating pump 1 is operated. Further, the circulating hot water is heated by the heating heat exchanger 2. The heated circulating hot water is supplied to the bypass circuit 3
Through the bath heat exchanger 4 for heating. At A6, the bath water is heated by the circulating hot water of the bath circuit 10 which is fed to the bath heat exchanger 4 and heated. During the heating of the bathtub water, the temperature detector 9 continuously detects the temperature of the bathtub water, and continues heating until the temperature set by the temperature setting switch 17 is reached.

When the temperature reaches the set temperature in A7, the temperature detector 9
Detects this and stops the operation at A8. If the set temperature is not reached in A7, heating is continued. That is, when reheating is performed, the closing device 5 is opened and heated after a reheating operation signal is input.

[0008]

However, in the above configuration, the closing device 5 is opened after the flowing water detector 8 is turned on. The closing device 5 provided in the heating circuit uses a thermal valve that gradually opens by heating the wax with a heater. Therefore, it takes about one minute to completely open the valve after sending the signal to open the valve. Therefore, the operation switch 15 for reheating the bathtub water should be used.
It takes about one minute from when the signal of the flowing water detector 8 is input to when the boiling actually starts after pressing. Therefore, it takes a considerable amount of time before the reheating starts, which is inconvenient.

SUMMARY OF THE INVENTION It is an object of the present invention to quickly start reheating when bath water is reheated, shorten the reheating time, and improve the usability.

[0010]

A heating heat exchanger for heating circulating hot water for heating, a circulating pump for supplying circulating hot water, and a bath heat exchanger for indirectly heating bath water using the circulating hot water. And a bath pump to supply bathtub water, a thermostatic closing device to supply and stop circulating hot water to be supplied to the bath heat exchanger, and to automatically apply hot water to the bathtub or bathtub After the completion of the automatic operation for boiling water to a predetermined temperature, a control means for opening the closing device for a predetermined time is provided.

[0011] The second means is a judging means for judging the number of heating terminals used to pass the circulating hot water of the heating heat exchanger, and the number of heating terminals used for a predetermined time after the automatic operation is completed. If the number is equal to or less than a predetermined number, a control means for opening the closing device is provided.

The third means includes a control means for opening the closing device for a predetermined time after the completion of the automatic operation and heating the circulating hot water to a predetermined temperature.

[0013]

According to the above-mentioned first means, the hot water supply / heating apparatus of the present invention, by the operation of the control means, automatically applies hot water to the bathtub or a predetermined time after the completion of the automatic operation of boiling the bathtub water to the set temperature. Opens the closing device.
Therefore, it is possible to reduce wasteful time required to open the valve of the closing device during reheating, to enable rapid heating of bathtub water, and to provide an easy-to-use hot water supply / heater.

Further, in the hot water supply / room heating apparatus of the present invention, the determining means determines the number of heating terminals used, and if the number is less than the predetermined number, the control device sets the predetermined time after the completion of the automatic operation. Opens the closing device. Therefore, when reheating the bathtub water during the use of the heating and within the predetermined time, quick reheating can be performed without impairing the heating capacity.

In the hot water supply / room heating system according to the third aspect of the present invention, the control device may open the closing device for a predetermined time after the completion of the automatic operation and heat the circulating hot water to a predetermined temperature. Thereby, it is possible to reheat the bathtub water more quickly within the predetermined time.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, for example, a hot water supply / room heating apparatus according to the present invention comprises a heating pump 1 for circulating hot water for heating, a heating heat exchanger 2 for heating the hot water by a burner or the like (not shown), A bath heat exchanger 4 and a closing device 5 are provided in the bypass circuit 3. Further, a bath pump 7 for feeding bath water from the bath 6 to the bath heat exchanger 4, a flow detector 8 for detecting flowing water of the bath, and a temperature detector 9 for detecting the temperature of the bath water. Are provided in the bath circuit 10.

A hot water supply circuit 11 for heating hot water, a hot water supply circuit 11 for supplying hot water at a set temperature or a hot water at a set water level to the bathtub 6 using the hot water supply circuit 11, and a bath circuit 1
0 and a hot water circuit 12 which connects the two circuits 10 and 11 to each other. The hot water circuit 12 is provided with an on-off valve 13. A remote control 14 for remote operation includes a reheating switch 15 for starting and stopping heating of bath water,
There is an automatic switch 16 for automatically supplying hot water to the bathtub 6, and a temperature setting switch 17 for setting a bath temperature.

The heating circuit 19 is provided with a plurality of terminals 20 for heating and heating a room or the like in parallel. Each component is electrically connected to the control device 21 by a broken line in the figure. The control device 21 is provided with control means 23 for controlling the opening and closing of the closing device 5 and determination means 24 for determining the number of heating terminals 20 in use.

Next, the operation of the control means 23 based on the above configuration will be described. Automatic switch 1 of remote control 14
When 6 is pressed, the on-off valve 13 opens. The water is heated in the hot water supply circuit 11 so as to reach the temperature set by the temperature setting switch 17, and hot water of the set water amount or the set water level is dropped into the bathtub 6 via the hot water circuit 12 and the bath circuit 10, and reaches the set temperature. Until it is heated by the bath circuit 10. In addition, although there is no hot water circuit 12 and there is no function of automatically supplying hot water to the bathtub 6, there is a type in which bathtub water is heated to a set temperature.

FIG. 2 shows a sequence flow of the control device 21 according to the first embodiment. After the automatic operation is completed with a sequence number A1 shown on the left shoulder, a signal for opening the valve is sent to the closing device 5 at A2. When the predetermined time has not elapsed from the completion of the automatic operation in A3, when the reheating switch 15 is pressed in B1, the closing device 5 operates the bath pump 7 in B2 while the closing device 5 is open.

Here, when there is bathtub water in the bathtub 6,
Bath water circulates in the bath circuit 10 and the flowing water detector 8
Turns ON. Then, the heating pump 1 operates at B4, and the circulating hot water is heated by the heating heat exchanger 2. At this time, since the closing device 5 is open, the heated circulating hot water passes through the bypass circuit 3 and passes through the bath heat exchanger 4 to be heated. The bath tub water is heated by the circulating hot water of the bath circuit 10 which is sent to the bath heat exchanger 4 and heated in B5. During the heating of the bathtub water, the temperature detector 9 continuously detects the temperature of the bathtub water, and continues heating until the temperature set by the temperature setting switch 17 is reached.

When the set temperature is reached in B6, the temperature detector 9
Detects this and stops the operation at B7. If the set temperature is not reached in B6, the heating is continued. Closing device 5
Since it takes time to completely open the valve, by opening the valve for a predetermined time after the completion of the automatic operation, it is possible to reduce unnecessary time for opening the closing device 5 at the time of reheating. And allow for rapid heating.

When a predetermined time has elapsed at A3, the closing device 5 is closed at C1. In this state, run switch 1 with C2
When 5 is pressed, the bath pump 7 is turned on at C3, and the closing device 5 is opened. In this case, since the predetermined time has elapsed since the completion of the automatic operation, it is considered that the user has not taken a bath, so that quick boiling is not required.

A control means (not shown) according to a second embodiment will be described. FIG. 3 shows a sequence flow of the control means (not shown) of the second embodiment. When the automatic operation is completed in A1, the closing device 5 is opened in A2, and a predetermined time elapses in A3. If not, at A4,
The judging means 24 judges the number of terminals 20 used by the signal of the running water detector of the terminal 20 (not shown), and the closing device 5 is in a valve-open state if not more than a predetermined number. .

When the reheating switch 15 is pressed at B1, the bath pump 7 is turned on.
Operate in sequence from 3 to B8. When a predetermined time has elapsed at A3, the closing device 5 is closed at C1. Further, if the number of terminals 20 used is equal to or larger than the predetermined number in A4, the closing device 5 is closed in C1 in the same manner.

When the operation switch 16 is pressed at C2,
At C3, the bath pump 7 is turned on, and the closing device 5 is opened.
When the closing device 5 is opened, circulating water flows to the bath heat exchanger 4 via the bypass circuit 3. When the closing device 5 is heated in the valve open state, the flow rate flowing to the heating circuit 19 decreases, and the head outside the machine decreases. If a large number of terminals 20 are used,
The circulating water cannot be sufficiently supplied to the terminal device 20, and the heating capacity is reduced.

Therefore, after the completion of the automatic operation, the judging means 24 judges the number of used terminals 20 for a predetermined time, and if the number of used terminals does not affect the heating capacity even if the closing device 5 is opened. The closing device 5 is opened. As described above, a sufficient reheating operation and a sufficient heating operation are enabled.

The control means (not shown) according to the third embodiment will be described. FIG. 4 shows a sequence flow of the control means (not shown) according to the third embodiment. After the automatic operation is completed in A2, the heating pump 1 is turned on, and the circulating water is supplied to the heating heat exchanger 2. Is heated to a predetermined temperature, and the closing device 5 is opened. If the operation switch 15 is pressed in B1 before the predetermined time has elapsed in A3, the sequence proceeds with the circulating water heated in A2 and the closing device 5 opened, and the bath pump 7 is turned on in B2.

Here, when the B3 running water detector 8 is turned on, the bath water is heated by the bath heat exchanger 4. When heated to the set temperature in B5, the reheating operation is stopped in B6.
When a predetermined time has elapsed at A3, the heating pump 1 is turned off at C1, the heating of the circulating water is stopped, and the closing device 5 is closed.

Here, when the driving switch 15 is pushed, the bath pump 7 is turned on at C3, and the closing device 5 is turned on.
Is opened. For a predetermined time after the completion of the automatic operation, the closing device 5
And the circulating water is heated to a predetermined temperature, so that the time for heating the circulating water and the time for opening the closing device 5 can be reduced. Therefore, in the case of reheating, very fast reheating can be performed.

[0031]

As is apparent from the above description, the first aspect of the hot water supply / room heating system of the present invention is that the closing device is provided for a predetermined time after the completion of the automatic operation of the hot water supply to the bathtub or the boiling of the bathtub water. By opening the valve, wasteful time required for opening the closing device during the reheating during the predetermined time can be reduced, enabling quick reheating of bath water, and easy-to-use hot water supply and heating. Equipment can be supplied.

In the second aspect, the determination means determines the number of terminals to be used, and the control means opens the closing device, thereby enabling quick reheating of bathtub water without impairing the heating capacity. To

A third aspect of the present invention is to heat the circulating water of the heating circuit to a predetermined temperature for a predetermined time after the completion of the automatic operation, and to open the closing device so that the bathtub water within the predetermined time is opened. Enables faster reheating and improves usability.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a hot water supply / room heating device according to an embodiment of the present invention.

FIG. 2 is a flowchart of a first embodiment of the apparatus.

FIG. 3 is a flowchart of a second embodiment of the apparatus.

FIG. 4 is a flowchart of a third embodiment of the apparatus.

FIG. 5 is a configuration diagram showing a conventional hot water supply / room heating device;

FIG. 6 is a flowchart of the apparatus.

[Explanation of symbols]

1 heating pump 2 Heating heat exchanger 3 bath heat exchanger 5 Closing device 7 bath pump 23 control means 24 Judgment means

Claims (3)

(57) [Claims] 1. A heating heat exchanger for heating circulating hot water for heating, a heating pump for supplying the circulating hot water, and a bath heat exchanger for indirectly heating bathtub water using the circulating hot water.
A bath pump for supplying bathtub water, a thermostatic closing device for supplying and stopping the circulating hot water supplied to the bath heat exchanger, and a method for automatically supplying hot water to the bathtub or a bathtub A hot water supply and heating system comprising: control means for opening the closing device for a predetermined time after completion of the automatic operation of boiling water to a predetermined temperature. 2. A determination means for determining the number of heating terminals used for passing the circulating hot water of the heating heat exchanger, and the number of heating terminals used for a predetermined time after the completion of the automatic operation. 2. The hot water supply / room heating device according to claim 1, further comprising control means for opening the closing device in the following cases. 3. The hot water supply and heating system according to claim 1, further comprising control means for opening a closing device for a predetermined time after completion of the automatic operation and heating the circulating hot water to a predetermined temperature.