JPH11319381A - Warm washing water supply unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warm washing water supply unit that can protect a three way valve by adjusting the maximum pressure applied to the three-way valve. SOLUTION: A bath incoming pipe 5 and a bath returning pipe 6 are connected to a bath circulation heat exchanger 2, a circulation pump 7 is provided on the bath returning pipe 6 the other end of which communicates with a bathtub 4, the bath incoming pipe 5 is introduced to the inside of the warm washing water supply unit 8 and connected with a water inlet 91 of a three-way valve 9, a bath outgoing pipe 51 is connected with a bath-side outlet 92 of the three- way valve 9, and the other end of the bath outgoing pipe 51 communicates with the bathtub 4. In the warm bath water supply unit 8, a filter room 10 with a filter 101 communicates with a warm-water-side outlet 93 of the three- way valve 9, a warm water supply pipe 11 with a water stream switch 12 communicates with the filter room 10, a communicating pipe 13 communicates with the bath incoming pipe 5 through a pressure safety valve 14, and a drain pipe 15 with a water discharge valve 151 is connected with the filter room 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing and pouring unit for supplying remaining hot water from a bath, hot water from a water heater, water and the like to a fully automatic washing machine using a bath circulation heating / hot water supply apparatus.

[0002]

2. Description of the Related Art Conventionally, it has been practiced to supply hot water from a bath or hot water from a water heater to a fully automatic washing machine, and determine the operation state of the fully automatic washing machine from the state of water flow in a water supply path. There is known an apparatus which supplies hot water or water from a hot water remaining in a bath or a water heater according to the operation state. For example, JP-A-5-115
No. 679 discloses a method in which a running water sensor is provided in a water supply path leading to an on-off valve controlled by a fully automatic washing machine, and after the operation in the washing mode is started, the running water sensor does not continuously detect running water. This mode is maintained until the time exceeds the set time, and both the heating selection means for selecting heating / non-heating and the water supply selection means for selecting either the tap water supply means or the bath water supply means are controlled to be operable. At the same time, when the set time is exceeded, the mode shifts to the rinsing mode, the water supply selecting means forcibly selects the tap water supply means, and only the heating selecting means can be operated.

[0003]

However, in the above-mentioned conventional apparatus for pouring and pouring water into a washing machine, after setting each of a washing mode and a rinsing mode, a start switch (standby switch in the above publication) is set. The automatic washing machine is started when it is inserted, but recently fully automatic washing machines have a reservation operation function. When this reservation operation is set, the automatic washing machine will operate until the set time comes. The machine does not operate, and the electromagnetic valve in the water supply path is kept closed, so that a standby state is set. At this time, if the remaining hot water washing is selected, the pump provided in the bath water heater of the bathtub water supply means remains in operation, and there are problems such as noise, pump durability, and waste of power. . In addition, in a pouring and pouring device for a washing machine that does not have a hot / water mixing valve, a hot water washing mode is selected, and when the fully automatic washing machine is in a reserved operation, a hot water washing mode is selected and a start switch is turned on. It is necessary to set the hot water supply set temperature of the water heater to the set temperature for pouring the washing machine (for example, 40 ° C.), and to prohibit the change of the hot water set temperature until the washing mode is completed. Therefore, there is a problem that it is not possible to set a desired temperature when using another hot water supply until the fully automatic washing machine starts operating.

It is an object of the present invention to provide a method for controlling a washing and pouring unit that prevents a pump from continuously operating for a long time and does not restrict a set hot water supply temperature when washing in a hot water washing mode. .

[0005]

In order to achieve the above object, a washing and pouring unit according to the present invention is characterized in that, in claim 1, means for supplying tap water to a washing machine with or without heating tap water; In a washing and pouring circuit having means for heating the remaining hot water in a bathtub or supplying the remaining hot water to a washing machine without heating, a bath circulation pipe, a pouring pipe to the washing machine, a bath circulation pipe, and a pouring water A three-way valve for switching between the pipes for washing and pouring, a filter chamber communicating with the pouring-side outlet of the three-way valve, and a pressure safety valve communicating with the filter chamber; and adjusting the maximum pressure applied to the three-way valve. This can prevent damage to the three-way valve due to excessive pressure and protect the three-way valve. In claim 2, the pressure safety valve is communicated with the bath circulation pipe by the communication pipe,
By draining the drainage from the pressure relief valve to the bathtub through the bath circulation pipe, a new drainage device is not required, and the configuration is simplified.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIG. 11, a schematic configuration of a water / water supply device provided with a laundry pouring unit to which the present invention is applied will be described.
The bath water heater 1 includes a bath circulation heat exchanger 2 and a hot water heat exchanger 3, and is heated by a heat source (not shown). The bath circulation heat exchanger 2 is connected with a bath inlet pipe 5 and a bath return pipe 6. The bath return pipe 6 having the other end connected to the bathtub 4 is provided with a circulation pump 7. It is introduced into the inside of the pouring unit 8 and connected to the water inlet 91 of the three-way valve 9, the bath outlet pipe 51 is connected to the bath-side outlet 92 of the three-way valve 9, and the other end of the bath outlet pipe 51 is connected to the bathtub 4. Is in communication with
Further, the hot water supply heat exchanger 3 is in communication with a water supply pipe 31 that supplies cold water (tap water) to the hot water supply heat exchanger 3 and a hot water supply pipe 32 that sends heated hot water to a predetermined hot water supply place.

In the washing and pouring unit 8, a filter chamber 1 having a filter 101 at a pouring side outlet 93 of the three-way valve 9 is provided.
0 is communicated, and a water flow switch 12
And a communication pipe 13 is connected to the bath inlet / outlet pipe 5 via a pressure safety valve 14 and a drain pipe 15 having a drain plug 151 is connected. The pouring pipe 11 is connected to a washing machine 27 via a faucet 26, and one end of a hot water supply pipe 16 is connected between the filter chamber 10 and the water flow switch 12, and the other end of the hot water supply pipe 16 is connected in series. Are connected to a pouring solenoid valve 19 and a pouring solenoid valve 20 via check valves 17 and 18 which are disposed in the hot water supply pipe 32 of the hot water supply heat exchanger 3. A branch pipe 23 is connected through the check valve 21;
A water supply branch pipe 24 branched from a water supply pipe 31 and having a filter 25 is connected to the water injection electromagnetic valve 20 via a water governor 22.

Referring to FIG. 12, the switching state of the three-way valve 9 will be described. The rotation position of the valve body 90 rotated by the motor 9A is detected by a limiter switch (not shown).
(A) is a circulation position (for example, a rotation angle of 0 degree), and a water inlet 9;
1 and the bath-side outlet 92, ie, the bath inlet / outlet tube 5 and the bath outlet / outlet tube 5
1 is connected, and the circulating pump 7 is driven to perform heating, so that the hot water in the bathtub 4 is returned from the bath return pipe 6 through the bath circulating heat exchanger 2, the bath access pipe 5, the three-way valve 9, and the bath access pipe. 5
Heat by circulating from 1. (B) is a remaining hot water pouring position (for example, a rotation angle of 180 degrees), and the pouring pipe 11 is communicated with the water inlet 91 and the pouring side outlet 93 via the bath inlet / outlet pipe 5 and the filter chamber 10, By driving the circulation pump 7, the remaining hot water in the bathtub 4 is discharged from the bath return pipe 6 through the bath circulation heat exchanger 2, the bath inlet pipe 5, the three-way valve 9, and the pouring pipe 11 through the faucet 26. The washing machine 27 is filled with water, and is heated by a heat source (not shown) as needed. (C)
At the backwash position (for example, a rotation angle of 90 degrees),
And the bath-side outlet 92 and the pouring-side outlet 93, that is, the bath inlet / outlet pipe 5, the bath outlet / outlet pipe 51 and the pouring pipe 11 are communicated with each other. By supplying water to the inlet pipe 5 and the bath outlet pipe 51, the filter 101 in the filter chamber 10 is washed.

Referring to FIG. 13, an example of a remote controller of the washing and pouring unit 8 will be described. The remote controller 33 includes an operation switch 34 and an operation switch lamp 341, a start switch 35 and a start switch lamp 351, and the inside of the bathtub 4. A selection switch 36 for selecting one of a pouring course of a remaining hot water washing course using remaining hot water, a hot water washing course using hot water from the hot water supply heat exchanger 3, and a water washing course using cold water, and a selected note The display unit 37 includes a pouring course lamp 371 for displaying a hot water course and a water rinsing course.

The operation will be described.
When the power switch 4 is turned on, the power is turned on and the operation switch lamp 3
41 lights up. When the pouring course is selected by pressing the selection switch 36, the pouring course lamp 371 corresponding to the selected pouring course is turned on. Then, when the start switch 35 is pressed, washing is performed in the selected pouring course. This is a transition to water rinsing. In selecting the pouring course, when the remaining hot water washing course is selected, the three-way valve 9 is turned to the remaining hot water pouring position (see FIG. 12B), and the circulation pump 7 is operated. Valve 20
By keeping the closed state, the remaining hot water in the bathtub 4 is supplied from the bath inlet pipe 5 to the pouring pipe 11 through the filter chamber 10.
It is supplied to the washing machine 27.

When the remaining hot water washing course is selected and the washing machine 27 is set to the reserved operation, the washing machine 27 is stopped until the reserved time elapses and no water is injected. 12 is off. When the water flow switch 12 has been kept off for a predetermined time, that is, when there is no water flow in the pouring pipe 11 for a predetermined time, the three-way valve 9 is turned to the circulation position (FIG. 12A) to stop the circulation pump 7, and the water is injected. Open the solenoid valve 20 and connect the water supply branch pipe 24 to the pouring pipe 1
Stand by in the state of the washing course to communicate with 1. With this configuration, unnecessary continuous operation of the circulation pump 7 can be prevented.

When the reserved time has elapsed and a water flow is generated in the pouring pipe 11 and the water flow switch 12 is turned on, the operation is returned to the previously selected remaining hot water washing operation, and the three-way valve 9 is moved to the remaining hot water pouring position. The circulation pump 7 is restarted while being rotated (see FIG. 12B), and the water injection solenoid valve 20 is closed. At this time, since the water governor 22 is provided to restrict the flow rate of water, the water supply branch pipe 24 reduces water hammer generated when the water injection solenoid valve 20 is closed from the water flow state.

When the remaining hot water has been washed, the circulation pump 7 is stopped and the three-way valve 9 is turned to the backwash position (FIG. 12c).
The water injection solenoid valve 20 is opened, cold water is supplied from the injection pipe 11 to the filter chamber 10, and the filter 101 is washed (filter backwash) to complete the remaining hot water washing process. Thereafter, the three-way valve 9 is moved to the circulation position (see FIG. Rotate to 12a) and move to the water rinsing stroke.

When the hot water washing course is selected, the hot water supply set temperature T _S of the hot water supply heat exchanger 3 of the bath water heater 1 is changed to the washing pouring set temperature T _SW (for example, when T _S > 40 ° C.). Is T _SW = 40 ° C., and when T _S ≦ 40 ° C., T _SW =
T _S ), while holding the three-way valve 9 at the circulation position (FIG. 12A), the pouring solenoid valve 19 is opened, and the washing machine 2
7 is supplied with hot water. After the end of the hot water washing, the pouring solenoid valve 19 is closed, and the process shifts to a water rinsing course.

When the washing course is selected and the washing machine 27 is set to the reserved operation, the washing machine 27 is stopped until the reserved time elapses and no water is injected. Is off. If the water flow switch 12 has been kept off for a predetermined time, that is, if there is no water flow in the pouring pipe 11 for a predetermined time, the pouring solenoid valve 19
Is closed, the water injection electromagnetic valve 20 is opened, and the hot water supply set temperature T _S of the hot water supply heat exchanger 3 is returned to the original temperature.

With this configuration, a hot water washing course is selected,
When the washing machine 27 is set to the reserved operation, the hot water supply set temperature T _S can be arbitrarily set until the reserved time elapses. When the water flow is generated in the pouring pipe 11 and the water flow switch 12 is turned on after the elapse of the reserved time, the hot water supply set temperature T _S is changed to the washing pouring set temperature T _SW and the water injection solenoid valve 20 is closed. The pouring solenoid valve 19 is opened and the pouring pipe 11 is opened.
Then, hot water is supplied to the washing machine 27 to start hot water washing.

When the washing course is selected, the water injection solenoid valve 2
0 is opened, the water flow switch 12 is turned on, that is, it is confirmed that there is a water flow without the pouring pipe 11, water is supplied from the water supply branch pipe 24 to the washing machine 27, and the water is supplied for a predetermined time ( If the water flow switch 12 is kept off for three minutes, for example), it is determined that the water washing process has been completed, and the process proceeds to the water rinsing process. When the water flow switch 12 has been on for a predetermined time (for example, 18 hours), or for a predetermined time (for example, 2 hours) after the water flow switch 12 has been off for a predetermined time (for 3 minutes). When the time has elapsed, the water rinsing step is omitted, the water injection solenoid valve 20 is closed, and the water injection operation ends.

[0018]

1 to 10 show an example of a control operation according to the present invention.
This will be described with reference to the flowchart of FIG. In FIG.
When the operation switch 34 is turned on, the operation lamp 341 is turned on, and the pouring course lamp 371 is turned on. The pouring course lamp 371 to be turned on is predetermined, and in the present embodiment, the indicator lamp for the remaining hot course is turned on first. Select remaining hot water washing course and start switch 3
When the switch 5 is turned on, the start switch lamp 351 is turned on, an initial state check is performed, and the process proceeds to the remaining hot water washing process to supply the remaining hot water in the bathtub 4 to the washing machine 27. After the remaining hot water washing process is completed, the process proceeds to the filter backwashing process and the filter 10
After washing the filter 101 by passing water from the opposite direction to 1, the process shifts to a water rinsing step to perform water rinsing, and after completion, the water injection solenoid valve 20 is closed, and the three-way valve 9 is temporarily moved to the back washing position (FIG. 12).
After turning to c), turning to the circulation position (FIG. 12a) to stop, and after elapse of the standby time t (for example, 1 hour), the start switch lamp 351, the operation lamp 341, and the pouring course lamp 371 are turned off. Then the washing is finished.

When a hot water washing course is selected and the start switch 35 is turned on, a start switch lamp 351 is turned on, an initial state check is performed, and then the process proceeds to a hot water washing process, and the pouring solenoid valve 19 is opened to take a bath. Hot water from hot water supply device 1 is supplied to washing machine 27. After the end of the hot water washing, the process proceeds to the water rinsing step similarly to the end of the remaining hot water washing course, and the washing is ended after the water rinsing is completed. When the water washing course is selected and the start switch 35 is turned on, the start switch lamp 351 is turned on, and an initial state check is performed. Then, the operation shifts to the water washing process, the water injection solenoid valve 20 is opened, and water from the water supply branch pipe 24 is opened. Is supplied to the washing machine 27. After washing,
As in the case after the remaining hot water washing course, the process proceeds to the water rinsing step, and after the water rinsing, the washing is completed.

Referring to FIG. 2, the initial state check will be described. The water flow switch 12 is off, that is, the pouring pipe 1
After confirming that there is no water flow in 1, it is confirmed by the limiter switch of the three-way valve 9 that the three-way valve 9 is in the circulation position (FIG. 12A), and the initial state check is completed. Now, the water flow switch 12 is turned on, that is, the pouring pipe 11
The first initial time t
_F1 (for example, for 25 seconds), the water flow switch 12
Is ON, the operation lamp 341 blinks at one point (lighting and extinguishing are alternately repeated once each at a constant rhythm) and an alarm is issued. When a signal indicating that the three-way valve 9 is not at the circulation position (FIG. 12A) is output, the three-way valve 9 is kept at the circulation position (FIG. 12A) even after the second initial time t _F2 (for example, 25 seconds) has elapsed. Is not confirmed, the operation lamp 341 blinks at two points (lighting is alternately repeated two times with one long light-off being interposed therebetween) and an alarm is issued. After confirming the warning that the operation lamp 341 blinks one point or two points, turning off the operation switch 34 and turning off the start switch lamp 351, the operation lamp 341 and the pouring course lamp 371, the above-mentioned state is caused. Restart after removing the cause.

The remaining hot water washing process will be described with reference to FIG.
After driving the circulation pump 7 and turning the three-way valve 9 to the remaining hot water pouring position (FIG. 12B), it is confirmed that the three-way valve 9 is at the remaining hot water pouring position (FIG. 12B).
2 is turned on, that is, after confirming that there is water flowing through the pouring pipe 11, the remaining hot water in the bathtub 4 is bathed while the pouring solenoid valves 19 and 20 are kept closed. From the incoming pipe 5 to the pouring pipe 11 through the filter chamber 10 to the washing machine 2
7 The water flow switch 12 is operated for a predetermined time (for example,
The supply of the remaining hot water is continued until the water is continuously turned off for three minutes), and when the water flow switch 12 is continuously turned off for a predetermined time (for three minutes), it is assumed that the remaining hot water washing process has been completed, and the later-described processing will be described later. Move to filter backwashing process.

However, the third initial time t _F3 (for example,
Even if 25 seconds have elapsed, the three-way valve 9 remains at the remaining hot water injection position (FIG. 1).
If it is not in 2b), the circulation pump 7 is turned off, an alarm in which the operation lamp 341 blinks at two points is confirmed, the operation switch 34 is turned off, and the start switch lamp 351, the operation lamp 341 and the pouring course lamp 371 are turned on. After turning off the light, the cause of the above state is removed, and then the system is restarted.

When the remaining hot water washing course is selected and the washing machine 27 is set to the reserved operation, the washing machine 27 is stopped until the reserved time elapses, no water is injected, and the water flow switch is turned off. 12 is off, even if the three-way valve 9 is at the remaining hot water injection position (FIG. 12B), the first standby time t _W1 (for example,
The water flow switch 12 does not turn on even after 5 minutes)
That is, when water flow in the pouring pipe 11 is not detected, the three-way valve 9 is turned to the circulation position (FIG. 12A), the circulation pump 7 is stopped, the water injection solenoid valve 20 is opened, and the state of water washing is performed. stand by. After waiting in the washing condition, the third waiting time t
_{If the} water flow switch 12 is turned on before _W3 (for example, 18 hours) elapses, that is, if water flow in the pouring pipe 11 is detected, washing is started after the reservation time of the washing machine 27 elapses. Then, the water injection solenoid valve 20 is closed, the circulation pump 7 is started, and the three-way valve 9 is moved to the remaining hot water injection position (FIG. 12B).
To supply the remaining hot water in the bathtub 4 from the bath inlet pipe 5 to the washing machine 27 from the pouring pipe 11 through the filter chamber 10.

On the other hand, if the water flow switch 12 does not turn on even after the third standby time t _W3 (18 hours) has elapsed, that is, if water flow in the pouring pipe 11 is not detected, the water injection solenoid valve 2
0 is closed, the three-way valve 9 is once turned to the backwash position (FIG. 12c) to perform the pressure release operation, and then to the circulation position (FIG. 12a).
After a standby time t (one hour) has elapsed, the start switch lamp 351, the operation lamp 341, and the pouring course lamp 371 are turned off, and washing is completed. By this pressure release operation, when the washing machine 27 finishes the water rinsing operation and closes the water injection solenoid valve 20, the solenoid valve (not shown) in the washing machine 27 connects the check valve 18 and the three-way valve 9 to each other. The pressure contained in the pipeline (greater than the water supply pressure due to the water hammer by closing the solenoid valve in the washing machine 27) is used to turn the three-way valve 9 to the backwash position (FIG. 12c). As a result, the packing around the valve element 90 of the three-way valve 9 can be prevented from being deformed or deteriorated, and the durability of the three-way valve 9 can be increased. The filter chamber 10
In addition, the communication pipe 13 is connected to the bath access pipe 5 through the pressure relief valve 14.
By reducing the contained pressure to a certain level of pressure or less, it is possible to prevent the load of the drive motor of the three-way valve 9 from becoming excessive due to the contained pressure being too high, The packing around the valve body 90 can be prevented from being damaged.

Further, while the water flow switch 12 is on,
When the second waiting time t _W2 (for example, 30 minutes) has elapsed, the three-way valve 9 is rotated to the circulation position (FIG. 12A) to stop the circulation pump 7, and then the three-way valve 9 is temporarily moved to the backwash position. After turning to (FIG. 12c) and turning to the circulation position (FIG. 12a) and stopping, after the elapse of the standby time t (1 hour), the start switch lamp 351, the operation lamp 341, and the pouring course lamp 371 are turned off. Then the washing is finished.

Referring to FIG. 4, the filter backwashing process will be described. The three-way valve 9 is turned to the circulation position (FIG. 12a), and after confirming that it is at the circulation position (FIG. 12a), the circulation pump 7 is stopped. , The water injection solenoid valve 20 is opened, and the three-way valve 9 is turned to the backwash position (FIG.
Is opened, cold water is supplied from the pouring pipe 11 to the filter chamber 10 to wash the filter 101 (filter backwashing), and then the three-way valve 9 is turned to the circulation position (FIG. 12a) to shift to the water rinsing stroke. I do.

When the three-way valve 9 is first turned to the circulation position (FIG. 12A) when entering the filter backwashing process, the fourth
If it is not possible to confirm that the vehicle is at the circulation position (FIG. 12A) even after the elapse of the waiting time t _W4 (for example, 25 seconds), the circulation pump 7 is stopped and the operation lamp 341 is operated.
Is turned on, the operation switch 34 is turned off, the start switch lamp 351, the operation lamp 3
After turning off the lamp 41 and the pouring course lamp 371, the cause of the above state is removed, and then the restart is performed.

When the three-way valve 9 is rotated to the backwash position (FIG. 12c), the three-way valve 9 is kept in the backwash position (FIG. 12c) even after the fifth standby time t _W5 (for example, 25 seconds) has elapsed. ), The circulation pump 7 is stopped, the operation lamp 341 is checked for a blinking two-point alarm, the operation switch 34 is turned off, and the start switch lamp 35 is turned off.
1. After turning off the operation lamp 341 and the pouring course lamp 371, the cause of the above state is removed, and then the restart is performed.

In FIG. 5, the hot water washing process will be described.
After checking the initial state, the hot water supply heat exchanger 3 of the bath water heater 1
Set the hot water supply set temperature T _S of the hot water to the washing pouring set temperature T _SW
(When T _S > 40 ° C., T _SW = 40 ° C., T _S ≦
At 40 ° C., T _SW = T _S ), a priority lamp of a bathroom remote controller (not shown, hereinafter referred to as a bathroom remote controller) flashes to indicate that the washing process has been started, and the three-way valve 9 is turned to the circulation position (FIG. 12a) Pouring solenoid valve 1
9 is opened, and hot water is supplied to the washing machine 27 from the hot water supply branch pipe 23 and the pouring pipe 11.

The supply of hot water is continued until the water flow switch 12 is continuously turned off for a predetermined time (3 minutes). When the water flow switch 12 is continuously turned off for a predetermined time (3 minutes), the bath water heater is supplied. 1 is stopped, the priority lamp of the bathroom remote control is returned to simple lighting, the hot water supply set temperature T _S is returned to the set value set by the bathroom remote control, the pouring solenoid valve 19 is closed, and the water pouring electromagnetic valve is closed. The valve 20 is opened and the process moves to the water rinsing stroke.

When the hot water washing course is selected and the washing machine 27 is set to the reserved operation, the washing machine 27 is stopped until the reserved time elapses, no water is injected, and the water flow switch 12 is turned off. If the from off, if off water flow switch 12 has continued for a first standby time t _{W1 (5} minutes), i.e. Note first standby time in the hot water pipe 11 t _{W1 (5} min) no water flow, The pouring solenoid valve 19 is closed and the pouring solenoid valve 20 is opened, and it is confirmed that the hot water supply of the bath water heater 1 is stopped. It indicates that tapping is possible, returns the hot water supply set temperature T _S to the set value set by the bathroom remote controller, and stands by in a water washing process in which the water supply branch pipe 24 communicates with the pouring pipe 11.

The water flow switch 12 before the third waiting time t _{W3 (18} hours) has elapsed is turned on, i.e. Note the water flow of the hot water pipe 11 is detected, washing pouring set the hot water set temperature T _S The temperature is changed to T _SW (when T _S > 40 ° C., T _SW =
At 40 ° C., when T _S ≦ 40 ° C., T _SW = T _S ), bathroom remote controller (not shown, hereinafter referred to as bathroom remote controller)
Blinks to indicate that the hot water washing process has been started, the water pouring solenoid valve 20 is closed and the pouring solenoid valve 19 is opened, and the hot water supply branch pipe 23 and the hot water pipe 11 are supplied to the washing machine 27 by the hot water supply pipe. Is supplied to perform hot water washing, and the supply of hot water is continued until the water flow switch 12 is continuously turned off for a predetermined time (3 minutes).

If the water flow switch 12 is not turned on even after the third standby time t _W3 (18 hours) has elapsed, that is, if water flow in the pouring pipe 11 is not detected, the water injection solenoid valve 2
0, the three-way valve 9 is once rotated to the backwash position (FIG. 12c) and then to the circulation position (FIG. 12a) to be stopped. After the elapse of the standby time t (1 hour), the start switch lamp 3 is turned off.
The operation lamp 341, the pouring course lamp 371 is turned off, and the washing is completed.

Further, a fourth waiting time t _W4 (for example, 1
If the water flow switch 12 does not turn off continuously for a predetermined time (3 minutes) even after the elapse of 8 hours), the pouring solenoid valve 19 is closed and the three-way valve 9 is temporarily returned to the backwash position (FIG. 12C). After turning, it is turned to the circulation position (FIG. 12A) and stopped, and after a standby time t (one hour) has elapsed, the start switch lamp 3
The operation lamp 341, the pouring course lamp 371 is turned off, and the washing is completed.

The water washing process will be described with reference to FIG. 6. After checking the initial state, the water injection solenoid valve 20 is opened, and the water flow is continued until the water flow switch 12 is continuously turned off for a predetermined time (3 minutes). When it is confirmed that the switch 12 has been continuously turned off for a predetermined time (3 minutes), the process shifts to a water rinsing process. After the initial state check, if the third standby time t _W3 (18 hours) elapses with the water flow switch 12 kept off even if the water injection solenoid valve 20 is opened, the water injection solenoid valve 20 is closed and the three-way valve 9 is once reversed. After turning to the washing position (FIG. 12c), turning to the circulation position (FIG. 12a) to stop, and after elapse of the standby time t (1 hour), the start switch lamp 3
The operation lamp 341, the pouring course lamp 371 is turned off, and the washing is completed. If the water flow switch 12 is not continuously turned off for a predetermined time (3 minutes) even after the water flow switch 12 is continuously turned on and the sixth standby time t _W6 (for example, 2 hours) has elapsed, the water injection electromagnetic valve 20 is turned off. After being closed, the three-way valve 9 is once rotated to the backwash position (FIG. 12c) and then to the circulation position (FIG. 12a) to be stopped. After the elapse of the standby time t (1 hour), the start switch lamp 351 Then, the operation lamp 341 and the pouring course lamp 371 are turned off, and the washing is completed.

The water rinsing process will be described with reference to FIG.
The process shifts after the filter backwashing process, the hot water washing process, or the water washing process in the remaining hot water washing course is completed. Since the water injection solenoid valve 20 is open, the washing machine 27 starts water flow, and When the switch 12 is turned on and water flow is confirmed, the water flow switch 12 is turned on for a set time t ₀ (for example,
If water is not continuously supplied in the pouring pipe 11 for a set time t ₀ (15 minutes), it is determined that the water rinsing process has been completed, the water injection solenoid valve 20 is closed, and the three-way valve is closed. 9 is once rotated to the backwash position (FIG. 12c) to perform the pressure release operation, and then rotated to the circulation position (FIG. 12a) to stop. After the elapse of the standby time t (1 hour), the start switch is turned on. The lamp 351, the operation lamp 341, and the pouring course lamp 371 are turned off, and the washing is completed.

Immediately after shifting to the water rinsing step, the first set time t ₁ (for example, 18 hours) elapses without turning on the water flow switch 12 or the water flow switch 1
If the second set time t ₂ (for example, 2 hours) elapses without turning off the set time t ₀ (15 minutes) continuously,
The water injection solenoid valve 20 is closed, the three-way valve 9 is once turned to the backwash position (FIG. 12c) to perform the pressure release operation, and then turned to the circulation position (FIG. 12a) to stop, and the standby time t After (one hour), the start switch lamp 351, the operation lamp 341, and the pouring course lamp 371 are turned off, and the washing is completed.

As described above, in the above embodiment, when the water rinsing stroke is completed, the water injection solenoid valve 20 is closed, and then the three-way valve 9 is once turned to the backwash position (FIG. 12c) to perform the pressure release operation. However, when the bath water heater 1 is monitoring the water level of the bathtub 4 with a pressure sensor and performing automatic operation, if the laundry pouring unit 8 is installed at a position higher than the water level in the bathtub 4, When the three-way valve 9 is switched to the backwash position (FIG. 12c), water in the washing pouring unit 8 flows out due to the difference in water head pressure, and the check valve 18 opens to suck in air. Bath circulation circuit (bath circulation heat exchanger 2,
Since air enters the bath inlet pipe 5 and the bath return pipe 6), the pressure sensor that detects the pressure based on the bathtub water level via the bath circulation circuit may misidentify the water level in the bathtub 4. Therefore, during the operation of the bath water heater 1 using such a bath circulation circuit, the pressure relief operation is not performed.

FIG. 8 shows the operation when the remaining hot water washing course is stopped halfway. When the operation switch 34 is turned off, the start switch lamp 351, the pouring course lamp 371, and the operation lamp 341 are turned off. The valve 9 is turned to the circulation position (FIG. 12a) and stopped, and the circulation pump 7 is stopped to finish.

FIG. 9 shows the operation when the hot water washing course is stopped halfway. When the operation switch 34 is turned off, the start switch lamp 351, the pouring course lamp 371 and the operation lamp 341 are turned off, and the bathroom remote controller is turned off. Is returned to mere lighting, indicating that normal hot water supply is possible instead of the hot water washing process, and the hot water supply set temperature T _S
After returning to the set value set by the bathroom remote controller, the pouring solenoid valve 19 is closed, and the three-way valve 9 is temporarily moved to the backwash position (FIG. 12C).
, And then rotate to the circulation position (FIG. 12A) to stop and finish.

FIG. 10 shows the operation when the washing course is stopped halfway. When the operation switch 34 is turned off, the start switch lamp 351, the pouring course lamp 371, and the operation lamp 341 are turned off, and the water injection solenoid valve is turned off. 20
Is closed, the three-way valve 9 is once turned to the backwash position (FIG. 12c), and then turned to the circulation position (FIG. 12a) to stop and finish.

[0042]

Since the present invention is constructed as described above, it has the following effects. If the remaining hot water washing course or hot water washing course is selected and there is no water flow to the washing machine until the first standby time elapses, the remaining hot water washing process of supplying remaining hot water or hot water supplying and supplying hot water Interrupt the process,
When the water injection solenoid valve is opened, the tap water is not heated, and the washing machine is set to the reserved operation by selecting the remaining hot water washing course or hot water washing course by waiting in the state of the washing process to supply the washing machine to the washing machine. Until the reserved time elapses, unnecessary continuous operation of the circulation pump can be prevented, and the hot water supply set temperature can be set arbitrarily. In addition, when the remaining hot water washing course or the hot water washing course is selected and water is supplied to the washing machine while waiting for the water washing process, when the water is detected, the original remaining hot water washing process or By returning to the hot water washing process, when the washing machine is set to the reserved operation, the remaining hot water washing course or the hot water washing course can be reliably started when the reserved time has elapsed.

[Brief description of the drawings]

FIG. 1 is a flowchart showing the operation of the laundry pouring unit of the present invention.

FIG. 2 is a flowchart showing an operation of an initial state check.

FIG. 3 is a flowchart showing an operation of a remaining hot water washing step.

FIG. 4 is a flowchart showing an operation of a filter backwashing step.

FIG. 5 is a flowchart showing an operation of a hot water washing process.

FIG. 6 is a flowchart showing an operation of a water washing step.

FIG. 7 is a flowchart showing an operation of a water rinsing step.

FIG. 8 is a flowchart showing an operation at the end of the remaining hot water washing course.

FIG. 9 is a flowchart showing an operation at the end of a hot water washing course.

FIG. 10 is a flowchart showing the operation at the end of the washing course.

FIG. 11 is a schematic configuration diagram of a laundry pouring unit of the present invention.

FIG. 12 is an explanatory diagram of switching of a three-way valve of the laundry pouring unit.

FIG. 13 is a plan view of an operation surface of the remote controller.

Claims (2)

[Claims] A washing machine comprising: means for supplying tap water to a washing machine with or without heating; and means for heating remaining hot water in a bathtub or supplying to a washing machine without heating. In the pouring circuit, a bath circulation pipe, a pouring pipe to the washing machine, a three-way valve for switching between the bath circulating pipe and the pouring pipe for washing and pouring, and communicating with a pouring side outlet of the three-way valve. A washing and pouring unit comprising a filter chamber and a pressure safety valve communicating with the filter chamber, wherein a maximum pressure applied to the three-way valve is adjusted. 2. The washing and pouring unit according to claim 1, wherein the pressure safety valve is connected to the bath inlet pipe by a communication pipe, and drainage from the pressure safety valve flows into the bathtub through the bath inlet pipe.