JP2001021210A - Water saving unit and water saving hot water supply/ reheating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatize reuse of remaining water in a bathtub without complicating piping construction, etc. SOLUTION: The present unit includes a plurality of pipe lines each for supplying hot water (W) in a bathtub a washing water tank of a toilet (low tank 4) or a washing machine (8), water supply changeover means (changeover valve), and control means (hot water supply reheating control section, water saving control section, hot water supply reheating remote control section, water saving remote control section). Hereby, the amount of use of service water is reduced by also employing hot water (W) in the bathtub (6) together with the clean water (Uo) and the supply hot water (Uh).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water saving unit for reusing remaining water in a bathtub for toilet washing and washing, and a water saving hot water supply / water supply unit.
Reheating system.

[0002]

2. Description of the Related Art In a flush toilet, the same tap water as that of drinking water is usually used. Since the discharge of excrement to the outside of the toilet and the flush of the toilet are performed simultaneously, about 10 liters are required for one treatment. Need water. Therefore, for such uses, there is an economical problem in using tap water such as tap water. In addition, remaining water in the bathtub is used for washing in addition to clean water.

[0003]

SUMMARY OF THE INVENTION Incidentally, Japanese Patent Application Laid-Open No.
No. 279640 “A tap water intake device using bath water”, Japanese Patent Application Laid-Open No. 9-268606 “Water recovery device”, and the like.
The flush toilets include the reuse of domestic wastewater. Such a water-saving technique has drawbacks such as an increase in the size of facilities as compared with the supply of tap water. Further, as a device for supplying the remaining hot water in the bathtub to the toilet, for example, Japanese Patent No. 2880839 “Device for using remaining hot water in bathtub” is used, but switching of water supply is not automated.

[0004] Therefore, an object of the present invention is to provide a water saving unit and a water saving hot water supply / reheating system which automate the reuse of residual water in a bathtub without complicating the piping configuration and the like.

[0005]

SUMMARY OF THE INVENTION A water saving unit and a water saving hot water supply / reheating system according to the present invention provide a water supply unit for supplying hot water (W) in a bathtub to a wash water tank (low tank 4) or a washing machine (8) of a toilet. Pipes (51, 52, 53, 5
4, 55), water supply switching means (switching valves 76, 88) and control means (hot water reheating control section 146, water saving control section 178, hot water reheating remote control section 204, water saving remote control section 23
6), the amount of tap water used is reduced by using hot water (Uo) and hot water (Uh) together with hot water (W) in the bathtub (6).

A water saving unit (Claim 1) of the present invention is a water supply pipe (18, a pipe 102) for supplying water (Uo), and a first heating means (heat exchanger 98) for supplying water (Uo). Water supply pipes (20, 108) for heating and supplying hot water, and a water saving unit (2) provided in a circulation pipe line (16) for circulating hot water (W) in a bath tub to a second heating means (heat exchanger 100). A first conduit (51) for supplying water to a wash water tank (low tank 4) of a toilet, a second conduit (52) for supplying water or hot water to a washing machine (8), A water supply switching means (selection valve 76, which selectively connects the circulation pipe or the water pipe to the pipe and the water pipe, the hot water pipe or the circulation pipe to the second pipe; 88), and pouring hot or cold water from the bathtub side into the washing water tank, Water supply clean water to, and wherein the pouring hot water of the hot water supply or the bathtub side.

[0007] With this configuration, the first pipe and the circulation pipe are connected to the flush water tank side of the toilet to supply hot and cold water in the bathtub, and the first pipe and the water pipe are connected to each other. Is connected to supply water. The washing machine is connected to the second pipe and the circulation pipe to supply hot and cold water in the bathtub, and the second pipe is connected to the hot water pipe or the water pipe to supply hot water or non-heated water. Can supply clean water. By operating the water supply switching means corresponding to the washing mode and the rinsing mode of the washing machine, it is possible to supply hot or cold water in the bathtub in the washing mode and water in the rinsing mode. The water in the bathtub can be heated by reheating and supplied to the washing machine. With such a water supply form, the hot water in the bathtub can be reused, the water can be saved, and when the hot water in the bathtub is heated and supplied to the washing machine, compared to the heating of the clean water. And the amount of heat can be reduced.

The water saving unit (Claim 2) of the present invention is a water supply pipe (18, conduit 102) for supplying water (Uo), and a first heating means (heat exchanger 98) for supplying water (Uo). A water-saving unit (2) provided alongside a hot-water supply pipe (20, 108) for heating and supplying hot water, comprising: a first pipeline (51) for supplying water to a flush water tank (low tank 4) of a toilet; (8) a second conduit (52) for supplying water or hot water;
The hot water (W) in the bathtub is heated by a second heating means (heat exchanger 100).
A third pipe (53) that circulates through the second pipe, a fourth pipe (54) that returns from the second heating means side to the bathtub (6) side, and a third pipe that is connected to the first pipe. Channel, the fourth pipe or the water pipe is selectively communicated, and the second pipe is selectively connected to the water pipe, the hot water supply pipe, the third pipe or the fourth pipe. Water supply switching means for causing the washing water tank to flow hot water or clean water from the bathtub side, and supplying the washing machine with clean water supply or hot water or hot water from the bathtub side.

With such a configuration, the water saving unit is provided with the third and fourth pipes which form part of the circulation pipe used for the reheating circulation on the bathtub side, and the first and second pipes are provided. Road and third
Alternatively, connection switching with the fourth pipeline can be realized in the water saving unit. That is, the water saving unit can be mounted in the middle of the existing pipe to save water.

The water-saving unit according to the present invention is characterized in that when there is running water to the washing water tank side or running water to the washing machine side, the washing water tank side has a toilet water supply mode, and the washing machine side has Are control means for selecting a washing water supply mode and executing water supply control (hot water supply additional heating control section 146, water saving control section 17)
8. A hot water supply additional heating remote control unit 204 and a water saving remote control unit 236) are provided. That is, the control means detects the drainage of the washing water tank, supplies hot water or clean water to the washing water tank side, and according to the running water on the washing machine side, hot water,
Water supply or hot water supply is performed to realize water supply control according to the usage mode or usage state of the toilet or the washing machine.

The water saving unit of the present invention (claim 4) gives priority to water supply to the washing water tank side, and when the water supply to the washing water tank side shifts to clean water, controls the hot water supply to the bathtub. It is characterized by including control means for executing (hot water supply additional heating control unit 146, water saving control unit 178, hot water supply additional heating remote control unit 204, water saving remote control unit 236). That is,
The washing water tank is supplied with hot water in a bath tub to fill the washing water tank side, and water is supplied by draining the water, and water is supplied when there is no hot water in the bath tub side. By giving priority to the supply of hot water to the wash water tank side, and when the water supply to the wash water tank shifts to clean water, by controlling the hot water supply to the bathtub,
The stabilization of hot water supply control of the bathtub is aimed at.

[0012] In the water-saving unit of the present invention, the water supply to the washing machine side and the water supply to the washing water tank are limited to tap water and the supply of hot and cold water in the bathtub to the washing machine. And a control means (hot water supply additional heating control unit 146, water saving control unit 178, hot water supply additional heating remote control unit 204, water saving remote control unit 236) for executing the water supply or the hot water supply. That is, the water supply to the washing machine is executed in the washing mode or the rinsing mode, and hot water is supplied in the washing mode. In a washing machine, when a considerable amount of water or hot water is required, and hot water is supplied to the washing machine from the bathtub side,
By avoiding the effect on the automatic washing operation when the hot and cold water is supplied to the washing water tank, stable washing operation is realized by restricting water supply to the washing machine and washing water tank to clean water. are doing.

In the water-saving unit according to the present invention, the water supply to the washing machine is restricted and the water supply to the washing water tank is restricted to clean water during the reheating cycle of the bathtub. It is characterized by. That is, during execution of the reheating cycle on the bathtub side, by restricting the supply of the hot water to the washing machine side, the shortage of the reheating water level, the reheating heating is impaired, or the supply of hot hot water to the washing machine side can be avoided. . By limiting the supply of water to the washing water tank to tap water, shortage of washing water can be prevented.

The water-saving unit according to the present invention interrupts the water level control when receiving a water supply command to the washing machine side during the water level control in the hot water supply control on the bathtub side. It is characterized by performing water supply to the water. That is, the water level control is performed at the time of additional heating or hot water supply in the bathtub.
At this time, if a considerable amount of hot and cold water is supplied from the bathtub to the washing machine, the water level control in the bathtub becomes meaningless, and the control is interrupted, and the water supply on the washing machine side is prioritized.

The water saving unit of the present invention (claim 8) includes a branch pipe (55) connecting the first pipe and the circulation pipe, and connecting the second pipe and the circulation pipe. ,
A switching valve (76, 88) is provided as the water supply switching means. In other words, since the supply of hot water, hot water or hot water is selected by using the branch pipe and the switching valve, the configuration of the pipe and the configuration of the feed water switching means can be simplified.

The water-saving unit according to the present invention is characterized in that the water-saving unit is provided with a filtering means (filter 90) for filtering hot water in the bath tub for supplying water to the washing water tank of the toilet or the washing machine. That is, the hot water in the bathtub is filtered by the filtering means, thereby preventing the washing water tank and its pipeline from being stained, and purifying the water supply to the washing machine.

A water saving hot water supply / reheating system according to the present invention (claim 10) is a first heating means (heat exchanger) for heating water supplied from a water pipe (18) and supplying hot water to the hot water pipes (20, 108). 98), a second heating means (heat exchanger 100) for circulating and heating the hot water (W) in the bathtub (6), and a circulating pipeline (circulating the hot water in the bathtub to the second heating means) 16)
A pump (112) for forcibly circulating hot and cold water in the bath tub through the circulation pipe; a hot water supply pipe (branch pipe 120) for guiding hot water from the first heating means to the bath tub; A toilet water pipe (line 22) for supplying water to the tank,
A washing water pipe (line 24) for supplying water or hot water to the washing machine;
Water supply switching means (selection valves 76 and 88) for selectively communicating the circulation pipe or the water pipe with the toilet water pipe and selectively communicating the water pipe, hot water pipe or the circulation pipe with the washing water pipe. ) To supply clean water or hot water on the bathtub side to the washing water tank, and supply clean water, hot water supply or hot water on the bathtub side to the washing machine.

According to this structure, the toilet water supply pipe and the circulation pipe are connected to the flush water tank side of the toilet to supply hot water to the bathtub and connect the toilet water supply pipe to the water pipe. To supply clean water, and to the washing machine,
Hot water supply or unheated hot water can be supplied by connecting the washing water supply pipe to the circulation pipe, supplying hot water in the bathtub, and connecting the laundry water supply pipe to the hot water supply pipe or the water supply pipe. By operating the water supply switching means corresponding to the washing mode and the rinsing mode of the washing machine, it is possible to supply hot or cold water in the bathtub in the washing mode and water in the rinsing mode. The water in the bathtub can be heated by reheating and supplied to the washing machine. Therefore, by changing the water supply mode, the water in the bathtub can be reused, and water can be saved. In the case where the water in the bathtub is heated and supplied to the washing machine, compared to the heating of the water. Thus, the amount of heat can be reduced.

The water-saving hot water supply / reheating system according to the present invention (claim 11) is characterized in that when there is running water to the washing water tank side or running water to the washing machine side, the washing water tank side has a toilet water supply mode. The washing machine is further provided with control means for selecting a washing water supply mode and executing water supply control. That is, the control means detects the drainage of the washing water tank, supplies hot water or clean water to the wash water tank side, and supplies hot water, clean water or hot water in accordance with the running water on the washing machine side, Alternatively, water supply control according to the use form or use state of the washing machine is realized.

In the water-saving hot water supply / reheating system according to the present invention (claim 12), priority is given to water supply to the washing water tank side, and when the water supply to the washing water tank side is shifted to clean water, the water is supplied to the bathtub. And control means for executing hot water supply control. That is, the washing water tank is supplied with hot water in the bath tub to fill the washing water tank side, and the clean water is supplied with clean water, and when there is no hot water on the bath tub side, clean water is supplied. Priority is given to hot water supply to the wash water tank side, and when water supply to the wash water tank side is shifted to clean water, hot water supply control to the bath tub is performed to stabilize hot water supply control of the bath tub.

In the water-saving hot water supply / reheating system according to the present invention, the water supply to the washing machine side and the water supply to the washing water tank are limited to tap water, and the bathtub to the washing machine is provided. And hot water supply, the water supply or the control means for executing the hot water supply. That is, the water supply to the washing machine is executed in the washing mode or the rinsing mode, and hot water is supplied in the washing mode. In a washing machine, a considerable amount of water or hot water is required, and when hot water is supplied to the washing machine from the bathtub side, avoiding the effect on the automatic washing operation when the hot water is supplied to the washing water tank, Water supply to the washing machine side and water supply to the washing water tank are restricted to tap water, thereby realizing a stable washing operation.

The water-saving hot-water supply / reheating system of the present invention (claim 14) restricts the supply of water to the washing machine side during the reheating circulation of the bathtub side, and supplies water to the washing tank to clean water. It is characterized by being restricted. That is, during execution of the reheating cycle on the bathtub side, by restricting the supply of the hot water to the washing machine side, the shortage of the reheating water level, the reheating heating is impaired, or the supply of hot hot water to the washing machine side can be avoided. . By limiting the supply of water to the washing water tank to tap water, shortage of washing water can be prevented.

The water-saving hot-water supply and reheating system according to the present invention (claim 15) interrupts the water level control when receiving a water supply command to the washing machine side during the water level control in the hot water supply control on the bathtub side. And supplying water to the washing machine. That is, the water level control is performed at the time of additional heating or hot water supply in the bathtub. At this time, if a considerable amount of hot and cold water is supplied from the bathtub to the washing machine, the water level control in the bathtub becomes meaningless, and the control is interrupted, and the water supply on the washing machine side is prioritized.

The water-saving hot water supply / reheating system of the present invention (Claim 16) includes a branch pipe connecting the toilet water pipe and the circulation pipe, and a washing pipe connecting the washing water pipe and the circulation pipe. A switching valve is provided as switching means. In other words, since the supply of hot water, hot water or hot water is selected by using the branch pipe and the switching valve, the configuration of the pipe and the configuration of the feed water switching means can be simplified.

A water saving hot water supply / reheating system according to the present invention (claim 17) is provided with a filtering means (filter 90) for filtering hot water from the washing water tank of the toilet or the bathtub for supplying water to the washing machine. Features. That is, the hot water in the bathtub is filtered by the filtering means, thereby preventing the washing water tank and its pipeline from being stained, and purifying the water supply to the washing machine.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

FIG. 1 shows an embodiment of a water saving unit and a water saving hot water supply / reheating system according to the present invention. This embodiment uses a water saving hot water supply / water supply system configured using the water saving unit 2.
It is a reheating system. In other words, this water-saving hot water supply / reheating system supplies clean water Uo or hot water W of the bath tub 6 through the water saving unit 2 to the low tank 4 as a flush water tank for the toilet, and supplies the hot water W of the bath tub 6 through the water saving unit 2 to the washing machine 8. W, tap water Uo, and hot water Uh obtained by the hot water supply reheating device 10 are selectively supplied, and water is saved by reusing the hot water W in the bathtub 6.

The hot water supply reheating device 10 heats the tap water Uo and reheats the hot water W circulating through a circulation pipe line 16 composed of a going pipe 14 and a return pipe 12 connected to the bathtub 6 through a circulation tool 11. Means for reheating.
That is, the clean water Uo passes through the clean water pipe 18 and the hot water
The hot water Uh, which is supplied to the water-saving unit 2 and is heated by the hot water supply reheating unit 10, is supplied to the water-saving unit 2 through the hot-water supply pipe 20, and is also supplied to the kitchen and the like. In this embodiment, the water saving unit 2 is installed on the way of the circulation pipeline 16 and the circulating hot and cold water W is supplied.

A conduit 22 serving as a toilet water supply pipe through which washing water flows is provided between the water saving unit 2 and the low tank 4.
Is connected between the water-saving unit 2 and the washing machine 8, and a pipe 24 as a washing water supply pipe through which washing water flows is connected.

An open / close valve 26 is provided at the end of the pipe 22 on the low tank 4 side, and two water supply pipes 28 and 30 are provided, each of which is a pipe branched through the open / close valve 26. The clean water Uo or hot water W from the water supply units 28 and 30 is stored in the low tank 4 as cleaning water Wo. Water Uo supplied from the water supply pipe 28 is used for hand washing and the like.

A water stop valve 34 is provided at the bottom of the low tank 4 together with the drain pipe 32.
Is provided with a ball-shaped valve element 36 movably with respect to a valve hole formed by recessing in the bottom of the raw tank 4.
The valve element 36 is attached to a timed water stop device 38 via an arm 40. A pull wire 42 is engaged with the arm 40, and the end of the pull wire 42 is connected to the low tank 4.
Attached to the operation handle 44 provided on the side of the
By turning the operation handle 44, the valve body 36 is moved, and the water stop valve 34 can be opened. Further, the movement of the valve body 36 is transmitted to the timed water stop device 38, and the valve body 36 closes the valve hole after a predetermined time and opens the on-off valve 26 at the time of drainage, and when the low tank 4 reaches a predetermined water level. Then, the on-off valve 26 is closed. Here, the toilet cleaning mode is a period from when the operation handle 44 is operated to start draining and until the timed water stop device 38 stops supplying water.

Further, an on-off valve 46 is provided at the end of the pipe 24 of the washing machine 8, and the on-off valve 46 is opened and closed in accordance with a washing mode such as a washing water supply mode and a rinsing mode on the washing machine 8 side. In this embodiment, the bathtub 6 is set in the washing water supply mode.
Hot water W or hot water Uh on the side and clean water Uo are supplied to the washing machine 8 in the rinse mode.

Next, FIG. 2 shows an embodiment of the water saving unit 2 and the hot water supply reheating unit 10. Water saving unit 2
Can be configured as a detachable independent unit, which includes a first pipeline 51, a second pipeline 52, a third pipeline 53, and a fourth pipeline 54 therein. The conduit 51 is a means for guiding the clean water Uo or the hot or cold water W on the side of the bathtub 6 to the low tank 4. The connecting portion 56 of the conduit 51 is connected to the clean water pipe 18, and the connecting portion 58 of the low tank 4 is connected to the low tank 4. Pipe 22
It is connected to the. The pipe 52 is means for guiding the hot water W, hot water Uh or clean water Uo on the bathtub 6 side to the washing machine 8, and is connected to the hot water supply pipe 20 side by the connecting portion 60 and the washing machine 62 by the connecting portion 62. It is connected to the pipeline 24 on the 8 side. The pipes 53 and 54 constitute a part of the circulation pipe 16, and the pipe 53 is connected to the outgoing pipe 1 by connecting portions 68 and 70.
2 and the conduit 54 is connected to the return pipe 14 by connecting portions 64 and 66.

A vacuum breaker 72,
A check valve 74, a switching valve 76, and a water amount sensor 78 are provided. The vacuum breaker 72 is a means for cutting off the water side, and the check valve 74 is a means for preventing the hot water W from flowing back to the water side. The switching valve 76 is a water supply switching unit that selectively switches between the pipe 51 and the branch pipe 55 provided between the pipes 51 and 54.

A vacuum breaker 80,
An on-off valve 82, a check valve 84, and a water amount sensor 86 are provided, and the branch pipe line 55 is connected between the check valve 84 and the water amount sensor 86.

The pipe 54 is connected to a branch pipe 55 by a switching valve 88.
The switching valve 88 is a water supply switching means for selectively taking out hot water W from the circulation line 16.

The branch line 55 is connected to the hot and cold water W from the circulation line 16.
To the pipes 51 and 52, and the filter 90
And a switching valve 92. The filter 90 is a means for filtering scales or the like of hot water W. The pipe 57 is connected to the switching valve 92, and the water U is supplied to the filter 90 in the reverse direction.
This is a means used when the filter 90 is washed by flowing o. The pipe 57 is connected to a drain pipe 96 through a connecting portion 94.

The hot water supply reheating unit 10 is provided with a heat exchanger 98 for hot water supply and a heat exchanger 100 for additional heating as first and second heat exchangers. Water Uo is supplied through the water pipe 18 and the pipe 102, and the temperature on the water inlet side is a temperature sensor 104, and the amount of water is a water amount sensor 1
The hot water Uh detected at 06 and obtained by heating the clean water Uo is supplied from the hot water supply pipe 108. Heat exchanger 9 for hot water supply
8 is detected by the temperature sensor 110.

The additional heat exchanger 100 is provided with the outgoing pipe 1
A water flow switch 111 which is attached to a circulation line 16 composed of a return pipe 12 and a return pipe 12 and detects the presence or absence of flowing water, opens and closes a pump 112 for pumping hot water W in the bathtub 6 side, A water level sensor 114 for detecting the water level by water pressure and a temperature sensor 116 for detecting the temperature of the hot and cold water W are provided. In addition, the switching valve 11 is provided on the going pipe 14 side.
8 are provided. The switching valve 118 and the hot water supply pipe 108
Is provided between the branch pipe 120 and the branch pipe 120.
Includes an on-off valve 122, a hopper 124 and a water amount sensor 126.
Is provided. The hopper 124 is means for cutting off the water supply side and the circulation pipeline 16 side.

The heat exchanger 98 for hot water supply and the heat exchanger 100 for reheating are provided with burners 128 and 130 for burning the fuel gas G, respectively. G is supplied, but the proportional valve 134, the on-off valve 136,
An on-off valve 138 is provided on the burner 130 side, and the supply of the fuel gas G is switched by the main valve 140. Each burner 128, 130 has a spark plug 14 as an ignition means.
2, 144 are provided.

Next, FIGS. 3 and 4 show an embodiment of a control device for the water saving hot water supply / reheating system, FIG. 3 shows the hot water supply reheating control unit and the water saving control unit, and FIG. 5 shows a control unit and a water-saving remote control unit.

The hot water supply additional heating control unit 146 includes the arithmetic control unit 14
8, input circuit 150, drive circuits 152, 154, 15
6, a transmission / reception circuit 158, etc., and an arithmetic control unit 148 is constituted by a microcomputer;
162, a CPU 164, an input port 166, output ports 168, 170, 172, and an input / output port 174. The input circuit 150 includes temperature sensors 104, 110,
116, water amount sensors 106 and 126, water level sensor 11
4. Detection outputs from various sensors such as the flowing water switch 111 are added, the driving circuit 152 is a driving unit of the pump 112, the driving circuit 154 is a driving unit such as the switching valve 118, and the driving circuit 156 is the on-off valves 122, 136, and 138. And the like. An input / output for transmission / reception by the transmission / reception circuit 158 for transmitting / receiving data to / from the remote controller is obtained from the input / output port 174, and necessary signals are transmitted / received through a wired or wireless communication medium 176. .

The water saving control unit 178 is provided by the arithmetic control unit 1
80, an input circuit 182, drive circuits 184 and 186, a transmission / reception circuit 188, and the like. The arithmetic control unit 180 is constituted by a microcomputer, and a ROM 190, a RAM 192,
CPU 194, input port 196, output port 198,
200 and an input / output port 202. Input circuit 1
Detection outputs from various sensors such as water amount sensors 78 and 86 are applied to 82, and the drive circuit 184 switches the switching valves 76 and 8.
Driving means such as 8 and 92 and the driving circuit 186 are driving means such as the on-off valve 82 and the like. A transmission / reception circuit 188 is connected to the input / output port 202 to transmit / receive data to / from the remote controller.
Input and output for transmission and reception by the communication medium 1
Transmission and reception of signals are performed through 76.

The remote control unit 204 includes an arithmetic control unit 206, an input circuit 208, a display circuit 210, a sound output circuit 212, a transmission / reception circuit 214, and the like. The arithmetic control unit 206 is constituted by a microcomputer.
6, RAM 218, CPU 220, input port 222,
Output port 224, output port 226, input / output port 2
28. The operation switch 2 is connected to the input circuit 208.
The input of 30 is applied, the output of the audio output circuit 212 is applied to the speaker 232, and the display output of the display circuit 210 is applied to the display 234 to perform necessary visual display. In addition, an input / output for transmission / reception by the transmission / reception circuit 214 for transmitting / receiving data to / from the main body side is obtained at the input / output port 228, and a signal is transmitted / received through the communication medium 176.

The water-saving remote control unit 236 includes an operation control unit 238, an input circuit 240, an audio output circuit 242, a display circuit 244, a transmission / reception circuit 246, and the like.
8 is constituted by a microcomputer, ROM 248,
RAM 250, CPU 252, input port 254, output port 256, output port 258, input / output port 260
It has. The input circuit 240 has an operation switch 262
Is input, the output of the audio output circuit 242 is applied to the speaker 264, and the display output of the display circuit 244 is applied to the display 266 to perform necessary visual display. In addition, an input / output for transmission / reception by the transmission / reception circuit 246 for transmitting / receiving data to / from the main unit is obtained at the input / output port 260, and a signal is transmitted / received via the communication medium 176.

The transmission / reception circuits 158, 188, 214, and 246 are connected to the communication medium 176 through a communication line composed of wires, a public communication line such as a telephone line, a wireless communication medium such as an infrared ray, and the like. Medium is used.

Next, the hot water supply additional heating operation and the water saving operation will be described separately.

The water saving hot water supply and reheating system includes hot water supply,
There are reheating, toilet water supply, and laundry water supply operations.Toilet water supply water or hot water supply operation, laundry water supply hot water,
There is a water supply or hot water supply operation. In this embodiment, a water saving operation is performed in which the hot water W in the bathtub 6 is reused for toilet water supply and laundry water supply.

A. Hot water supply operation to bathtub 6 etc. Hot water supply operation is executed by operation of operation switch 230 and the like. The water level in the bathtub 6 is detected by the water level sensor 114, and the shortage of the set water level is supplied. The hot water supply is burner 128
Is heated to heat the heat exchanger 98, and the clean water Uo supplied through the clean water pipe 18 passes through the heat exchanger 98 via the pipe line 102, and the hot water Uh obtained by the heating is supplied to the hot water pipe 10.
8. Outgoing pipe 1 from branch pipe 120 via switching valve 118
4, that is, hot water is supplied to the bathtub 6 via the pipe 54 and the switching valve 88 of the water saving unit 2. Further, in this hot water supply operation, in addition to general hot water supply from the hot water supply pipe 20 to a kitchen or the like, hot water supply to the water saving unit 2 is also performed.

Then, as a result of hot water supply, when the water level in the bathtub 6 shifts to the set water level, in the automatic operation operation, the temperature of the hot water W in the bathtub 6 is measured by the temperature sensor 116, and the measured temperature is lower than the set temperature. In such a case, the bath tub 6
The inside hot water W is reheated to the set temperature.

B. Reheating operation The reheating operation is started by operating the operation switch 230 or the like. First, the water level in the bathtub 6 is detected by the water level sensor 114, and the shortage of the set water level is supplied, and after reaching the set water level, the operation shifts to the reheating operation. In the reheating, the burner 130 is burned to heat the heat exchanger 100, the hot water W circulating through the circulation line 16 passes through the heat exchanger 100, and the hot water W obtained by the heating is supplied to the going pipe 14, ie, the water saving. It is returned to the bathtub 6 via the line 54 of the unit 2 and the switching valve 88. As a result, the temperature of hot water W in bathtub 6 is heated to the set temperature. At this time, general hot water supply can be performed through the heat exchanger 98.

C. Toilet water supply operation Water supply to the low tank 4 of the toilet is achieved by using both clean water Uo and hot water W to save water. That is, when the water stop valve 34 is opened and the water is drained from the low tank 4 to the toilet side, the on / off valve 26 is opened accordingly, and the toilet can be supplied with water. In this toilet water supply, after supplying about 3 liters of clean water Uo for washing the hands of the user, the water is saved by supplying the hot water W in the bathtub 6 side, and the hot water W cannot be supplied. Is filled with clean water Uo.

That is, in the water saving hot water supply / reheating system shown in FIG. 2, when the pipeline 51 communicates with the water pipe 18 by switching the switching valve 76, the clean water Uo is supplied from the pipeline 51 to the low tank 4. This supply is about 3 liters. Next, the switching valves 76 and 88 are switched, and the line 51 is switched.
5 and the conduit 54 communicate with each other via the branch conduit 55, FIG.
As shown in FIG. 8, hot water W is supplied from the circulation line 16 to the low tank 4 from the line 22, and the supply is continued until the water level in the low tank 4 reaches a predetermined water level and the on-off valve 26 is closed. Such toilet water supply is performed every time the low tank 4 is drained, but when the water amount sensor 78 does not detect passage of the hot water W, that is, when there is no hot water W, the switching valve 7
By switching the water supply 6, the clean water Uo is supplied to the low tank 4 in place of the hot water W to secure necessary washing water.

D. Washing / watering operation The washing / watering operation corresponds to the washing mode and the rinsing mode of the automatic washing machine. (A) After washing with hot water W, rinse with the water Uo. Rinse with hot water Uo after washing with hot water W, then shift to washing with hot water Uo when hot water W is insufficient c After rinsing with hot water Uh, rinse with hot water Uo D Wash with water Uo (not heated After washing by), there are various modes of rinsing with tap water Uo. These modes can be selected by operating the operation switch 262 of the water-saving remote control unit 236.

That is, the washing water supply is an operation of selectively supplying hot water W, hot water Uh or clean water Uo to the washing machine 8. In the above mode a, as shown in FIG. 6, the branch valve 55 and the pipeline 51 are shut off by the switching valve 76, and the pipeline 54 and the branch pipeline 55 are opened by the switching valve 88. The switching is performed, the pump 112 is operated, and hot water W is supplied to the washing machine 8 through the circulation pipeline 16 and the pipelines 54, 55, and 24. In this case, the washing mode is executed when the on-off valve 46 is opened. In this case, the hot and cold water W can be supplied while the burner 130 is burned and heated by the heat exchanger 100.

In the rinsing mode, in FIG.
By switching the switching valve 76, the pipe line 51 and the branch pipe line 55 are opened, whereby hot water Uo is supplied to the washing machine 8 from the pipe line 51 and the branch pipe line 55 via the pipe line 24.

In the above-mentioned mode a, the water amount sensor 8
6 or when the flowing water switch 111 does not detect a water flow, that is, when there is no hot water W, as shown in FIG. 7, the switching valve 88 is switched to disconnect the branch pipe line 55 and the pipe line 54, and the on-off valve 82 And hot water Uh is supplied to the washing machine 8 from the pipe 24 via the hot water supply pipe 20 and the pipe 52. In this case, the heat exchanger 98 is heated by the combustion of the burner 128 and the clean water Uo is heated to obtain hot water Uh.

In the above-mentioned mode c, as shown in FIG. 7, the switching valve 88 is switched to switch the branch line 55 and the line 54.
Is turned off, the on-off valve 82 is opened, the heat exchanger 98 is heated by the combustion of the burner 128, and the hot water Uh obtained by heating the clean water Uo is passed through the hot water supply pipe 20 and the pipe 52 to the pipe 24.
Is supplied to the washing machine 8 from.

The mode (d) is the same as the mode (a).

In the washing water supply control, when hot water W is supplied to the washing machine 8, as shown in FIG.
Is driven to check whether or not hot water W flows from the bathtub 6 to the circulation pipe line 16 by the output of the flowing water switch 111, whereby the presence or absence of the hot water W in the bathtub 6 is confirmed. If there is no remaining water, that is, hot water W, in the bathtub 6, water supply to the washing machine 8 is switched to water supply Uo or hot water Uh. And hot water W
Can supply heated or non-heated water. In the case of heating, a reheating operation is performed and the pump 112 is driven. When the operation of the washing machine 8 is started, the on-off valve 46 of the washing machine 8 is opened. Thereby, the bathtub 6 is controlled by the pumping pressure of the pump 112.
The supply of hot water W on the side is started. Pipe line 24 on the washing machine 8 side
The presence or absence of flowing water is confirmed by the water amount sensor 86.

When supplying the hot water W, the pump 112 is driven for a predetermined time, for example, three minutes, and if no running water is detected,
Once the pump 112 is stopped, the motor is prevented from being damaged. At this time, the switching valve 76 is switched so that the water pipe 18,
The pipes 51 and 55 are opened, and the presence or absence of running water Uo is confirmed by the output of the water amount sensor 86. When the inflow of the clean water Uo is confirmed by the water amount sensor 86, the switching valve 76 is switched and the pump 112 is driven so that the circulation line 16 is
The hot water W is supplied to the washing machine 8 through the pipe line 24 from.

At this time, when the mode for heating the hot water W is selected, the burner 130 is burned, and while the flowing water by the pump 112 is confirmed by the flowing water switch 111, the open / close valve 138 is turned on / off. The hot and cold water W is heated by intermittent combustion by performing a proper opening and closing and ignition.

When the flow of the hot water W is stopped, it is confirmed whether the open / close valve 46 on the washing machine 8 side is closed or the hot water W is insufficient.
In this case, the switching valve 88 is switched to shut off the circulation line 16 and the branch line 55, and the pump 112 is driven to check the presence or absence of hot water W in the circulation line 16. If there is no hot water W, the switching valve 76 is switched and the clean water Uo from the clean water pipe 18 is discharged.
Is supplied to the washing machine 8 side, and the clean water Uo is caused to flow to the washing machine 8 according to the opening / closing operation of the opening / closing valve 46.

If there is hot water W, the supply is switched to the supply of clean water Uo, and the process waits for 3 minutes. When running water is detected by the water amount sensor 86 for three minutes, the supply of hot water W is switched again, and the pump 112 is driven to flow hot water W to the washing machine 8. If there is no running water for three minutes, the supply of hot water W is terminated. That is, this is the end of the washing mode.

Such an operation is to fill the required water in the washing machine 8, that is, to fill the washing tub with water while repeating the rotation of the rotor and the rotation of the rotor in accordance with the operation of the washing machine 8.
This is performed to check whether or not the mode has shifted from the washing mode to the rinsing mode in the water supply operation.

The hot water supply to the washing machine 8 by the clean water Uo is executed when the hot water supply is selected by the water saving remote control unit 236 or when the hot water W is insufficient and the pump 112 cannot supply the hot water. . That is, the pipe 52 on the hot water supply side
And the pipeline 51 are shut off by the switching valve 76, and the on-off valve 82 is opened to flow the hot water Uh to the pipeline 24 side. At this time, whether or not running water is generated on the washing machine 8 side is confirmed by the water amount sensor 86, and this state is maintained until running water is generated. When flowing water is generated and the water amount sensor 106 on the pipe line 102 detects flowing water, the burner 128 is ignited and hot water supply is started by the start of combustion.

During the hot water supply, when the running water is stopped, it is waited for three minutes to restart the hot water supply to the washing machine 8 and the running water is monitored. When the operation is resumed in less than three minutes, the hot water supply operation is started again. If the running water is not confirmed after 3 minutes,
The on-off valve 82 in the water saving unit 2 is closed to end the hot water supply operation.

The water supply operation of the clean water Uo is performed in the water supply in the washing mode of the washing machine 8 and the rinsing mode.
In this case, the switching valve 76 on the pipe 51 side of the water saving unit 2 is switched to open the pipe 51 and the pipe 24, and the on-off valve 82
Is closed, the unheated clean water Uo is
And to the washing machine 8 side. This operation is on standby until the opening / closing valve 46 of the washing machine 8 is opened and the water supply operation is performed. Then, the on-off valve 46 on the washing machine 8 side is opened, the clean water Uo is supplied to the washing machine 8, and even if the on-off valve 46 of the washing machine 8 is closed, the water supply state of the clean water Uo is maintained and the apparatus stands by.

Then, the washing machine 8 side shifts to the rinsing mode, the on-off valve 46 is opened, and the fresh water Uo is supplied to the washing machine 8 again. In this case, it is checked whether the flowing water has stopped and a certain time has elapsed, for example, whether 60 minutes have elapsed. Until 60 minutes have passed, the apparatus stands by so that the water Uo can be supplied. After the elapse of 60 minutes, it is determined that all operations such as washing and rinsing of the washing machine 8 have been completed, and the supply of the clean water Uo is terminated.
o is a switching valve 76 such that water is supplied only to the low tank 4 side.
Switch.

E. Various Related Operations (Automatic Operation) FIG. 8 shows a control flowchart of the water saving hot water supply / reheating system. In step S1, it is determined whether or not a hot water filling command, that is, a command for hot water supply, additional heating, warming operation, or additional heating is issued from the hot water supply additional remote controller 204. After the instruction is confirmed, the process proceeds to step S2. I do. Step S
In 2, the water supply to the low tank 4 of the toilet is restricted to the use of clean water Uo based on the reheating instruction. During the additional heating operation, the washing with the normal tap water Uo is performed.

In step S3, the washing machine 8 is operated during the reheating operation.
Water supply operation to is prohibited. At this time, the water saving remote control unit 236 displays the prohibition of the water supply operation. And
When an operation command is input to the water-saving remote control unit 236 of the washing machine 8, a cancel sound is issued to notify that the command has been rejected.

In step S4, the operation shifts to the reheating control operation of the hot water W in the bathtub 6. That is, an operation of filling the bathtub 6 with water and performing additional heating to the set temperature is performed.

In step S5, the water-saving remote controller 2
From 36, it is determined whether or not a water supply command to the washing machine 8 has been issued. If the command has been issued, the process proceeds to step S6, and if not, the process proceeds to step S9.
In step S6, the water supply to the low tank 4 of the toilet is limited to the clean water Uo.

In step S7, during the operation of supplying water to the washing machine 8, the reheating operation of the hot water reheating device 10 is prohibited. At this time, prohibition of the additional heating operation is displayed on the water supply additional heating remote control unit 204. Further, when a reheating command is input to the hot water reheating remote control unit 204, a cancel sound is emitted to notify that the driving command has been rejected. In addition, if the warming operation is being performed, the additional heating operation is prohibited until the washing water supply operation ends.

In step S8, a water supply control operation to the washing machine 8 with the hot water W in the bathtub 6 is performed. In accordance with the operation of the washing machine 8, the supply of hot water W in the bathtub 6 and the supply of clean water Uo are controlled.

In step S9, the low tank 4 of the toilet
A water supply control operation is performed. When the flush water is drained in the toilet, the clean water Uo and the hot water W are supplied to the low tank 4 to restore the low tank 4 to a predetermined water level.

Next, FIG. 9 is a flowchart showing an operation of supplying water to the washing machine 8.

In step S21, it is confirmed whether or not the hot water supply additional heating device 10 is performing the additional heating operation. If the reheating operation is being performed, the operation command from the water-saving remote control unit 236 is rejected and a cancel sound is issued to notify the user. If the reheating operation is not being performed, the switching valve 88 of the water saving unit 2 is switched to the water supply path on the washing machine 8 side, and the pump 112 is driven until the on-off valve 46 on the washing machine 8 opens (water supply operation). stand by.

In step S22, it is confirmed whether or not the on-off valve 46 on the washing machine 8 side is opened to generate running water. The pump 112 is driven to stand by until a predetermined time t elapses. When the predetermined time t has elapsed, in order to prevent overheating of the pump motor, the pump 112 is stopped, the switching valve 88 is switched to shut off the pipeline 54 and the pipeline 55, and the switching valve 76 is switched to disconnect the pipeline 51. The pipe 55 is communicated with the pipe 24, and a water pressure is applied to the pipe 24 to wait. If running water Uo is detected, the operation is switched to hot water W.

In step S23, the flow shifts to the washing water supply mode. Hot water W is supplied to the washing machine 8 by the pump 112. In step S24, it is confirmed whether or not the water supply by the pump 112 has elapsed for a predetermined time or more and a predetermined amount of water has been supplied. Some washing machines 8 repeatedly supply and stop water intermittently to fill the washing tub with water. If the predetermined amount of water is not supplied and the predetermined time has not elapsed, it is determined that the water is not full, and the washing water supply mode is continued.

At this time, when the running water is stopped after a predetermined time has elapsed in step S24, it is determined that the water is full, the pump 112 is stopped, and the flow path is switched to the flow path shown in FIG. In step S25, it is determined whether or not the washing machine 8 has shifted to the rinse mode. When the running water is confirmed, it is determined that the mode has shifted to the rinsing mode, and the process proceeds to step S26.

In step S26, the water Uo is supplied to the washing machine 8. In step S27, it is confirmed whether or not a predetermined time has elapsed after the stoppage of the flowing water. Some washing machines 8 repeat water supply and rotor rotation in the rinsing operation, but it may be determined from the stoppage time of running water that the rinsing operation has been reliably completed.

In step S28, the washing water supply operation ends. At the same time, the operation of supplying water to the low tank 4 of the toilet is released.

Next, FIG. 10 is a flowchart showing an operation of supplying water to the low tank 4 of the toilet.

In step S30, it is determined whether the hot water reheating unit 10 is performing a reheating operation or a washing water supply operation. If neither is the case, the process proceeds to step S32. When the hot water supply reheating device 10 or the washing water supply operation is being performed, the process proceeds to step S31, and the toilet water is supplied to the clean water U.
o Restrict to water supply only.

In step S32, it is determined whether or not water has flowed into the low tank 4 of the toilet. When the running water is confirmed, it is determined that the cleaning operation has been started by discharging the water in the low tank 4, and thereafter the toilet water supply control is executed. In step S33, the water supply mode is executed.
Here, after discharging the washing water, the clean water Uo used for washing the user's hands is supplied for a predetermined time.

In step S34, it is determined whether a predetermined amount of clean water Uo has been supplied. When a predetermined amount of water is supplied, the supply of the clean water Uo used for hand washing is terminated, and the process proceeds to step S35.

In step S35, the switching valves 76 and 88 in the water saving unit 2 are changed to open the flow path from the outgoing pipe 14 to the low tank 4, and the pump 112 in the hot water reheating unit 10
Is operated to supply hot water W to the low tank 4.

In step S36, the supply of water is stopped before the low tank 4 becomes full, so that the amount of supplied water is calculated and it is determined whether or not the amount has reached a predetermined amount. Before the water is full, the process proceeds to step S37, and it is determined whether the open / close valve 26 of the low tank 4 is closed and the flowing water is stopped. When the running water stops, it is determined that the low tank 4 is full, and the operation of supplying water to the low tank 4 of the toilet is terminated.

In step S37, the switching valve 76 in the water saving unit 2 is operated to change the flow path, and a low water supply mode for supplying the low tank 4 with the high water Uo is executed. By this water supply, the pipeline 22 up to the low tank 4 is washed. In step S39, it is determined whether the open / close valve 26 of the low tank 4 is closed and the flowing water is stopped. Upon detecting the stoppage of flowing water, the operation of supplying water to the low tank 4 of the toilet is terminated.

Next, FIG. 11 shows the relationship between the operation of the hot water supply reheating device 10, the washing water supply operation and the toilet water supply operation, where A is the operation of the hot water reheating device 10, B is the operation of the washing water supply, C Is a toilet water supply operation. That is, the operation of the hot water supply reheating device 10 indicates a hot water supply for filling the bathtub 6 with hot water, and a warming operation in which the hot water temperature reduced by the reheating and the heat radiation is restored to the set temperature. When the hot-water supply additional heating device 10 is supplying hot water, the operation command of the water-saving remote control unit 236 has priority. In this case, the hot water supply operation to the bathtub 6 is stopped during the washing water supply operation, and when the water supply operation to the washing machine 8 is completed, the hot water supply to the bathtub 6 is restarted. Also, when a water supply instruction of the hot water W of the bathtub 6 to the toilet side is issued, the toilet water supply operation has priority over the hot water supply operation. When the hot-water supply reheating device 10 is performing reheating or during the heat retention operation time period, the water supply instruction to the washing machine 8 is canceled. That is, even if an operation command is input from the water-saving remote control unit 236, the command is canceled, and a cancel sound is notified from the water-saving remote control unit 236. Water supply to toilets is limited to water supply only. Further, a display prohibiting the washing and the water supply operation to the low tank 4 may be displayed on each remote controller to notify the user.

Next, FIG. 12 shows the operation of the washing machine 8,
Shows the relationship between the water supply operation to the toilet and the water supply operation of the toilet,
Is an operation of the washing machine 8, E is a water supply operation to the washing machine 8, and F is a water supply operation of the toilet. In the washing machine 8, water supply to the washing tub 8, washing operation, drainage of the washing tub, dehydration of water contained in the laundry, rinsing operation for removing detergent attached to the laundry, drainage of the washing tub, and dehydration are performed. Done. The side of the washing machine 8 opens and closes the on-off valve 46 in accordance with the water supply and rinsing operations.
Alternatively, clean water Uo is introduced, and clean water Uo is supplied during the rinsing operation. During the operation of supplying water to the washing machine 8 side, the operation of supplying the hot water W of the bathtub 6 to the low tank 4 of the toilet is prohibited, and the clean water Uo is supplied to the low tank 4 of the toilet.

Next, the relationship between the various operations is summarized as follows.

A. In the hot water supply operation, the relation between the toilet water supply and the washing water supply is such that when the running water is detected in the toilet low tank 4 during the hot water supply operation, the hot water supply operation is stopped, and the water supply control to the toilet low tank 4 is performed. .

B. When the toilet water supply is completed, the bath water supply operation is restarted. If there is a water supply command to the washing machine 8 during the hot water supply operation, the hot water supply operation is temporarily stopped and the water supply to the washing machine 8 is controlled. When the water supply control to the washing machine 8 ends, the hot water supply operation is restarted.

C. The hot water supply path when the water level is controlled by the water level sensor 114 switches the switching valve 118 connecting the hot water supply pipe line and the circulation pipe line 16 to a flow path from the hopper 124 side to the going pipe 14 side, and returns to the return pipe 12. A certain water level sensor 11
At 4, the water level in the bathtub 6 is observed.

D. Relationship between toilet water supply and washing water supply during reheating operation During bath reheating control, toilet water supply is limited to water supply. During bath reheating control (including during reheating operation during heat retention)
Then, the water supply command to the washing machine 8 is transmitted to the water-saving remote control unit 236.
This command is canceled even if it is executed.

E. Hot water supply control by water level sensor 114 During the warming time period, the water level is observed every 10 minutes, and if it is less than the set water level, hot water is supplied to the set water level. Further, the temperature of the hot water W is measured every 30 minutes, and if the temperature is lower than the set temperature, additional heating is performed to recover the set temperature.

F. Relationship between Toilet Water Supply and Laundry Water Supply at the Time of Control by Water Level Sensor 114 Since water level control is performed by the water level sensor 114, even if the amount of hot water W in the bathtub 6 decreases, it can be recovered. If the reheating operation is not performed during the warming time period, the washing water supply is performed with priority given to the instruction from the water saving remote control unit 236. After the washing water supply, hot water supply and reheating are performed in order to recover the set water level and the set temperature.

G. Relationship between toilet water supply and laundry water supply Laundry water supply has priority over toilet water supply. If washing water supply is instructed by the water-saving remote control unit 236 during water supply to the low tank 4, priority is given to washing water supply, and toilet water supply is limited to tap water supply. Since the amount of hot water W in the bathtub 6 on the washing machine 8 side is large, water is supplied to the washing machine 8 as much as possible. If priority is given to toilet water supply, the washing machine 8 sends a waterless alarm while waiting for water supply on the washing machine 8 side,
It takes time to perform operations such as resetting.

H. Selective water supply at the time of external hot water supply When hot water supply of laundry water supply is selected at the time of hot water supply to shower, kitchen, etc., when the temperature of external hot water is set to 45 ° C or more, it is forced to 45 ° if it damages clothes It is changed to C and hot water is supplied to the washing machine, shower and kitchen. There is no change when the temperature is lower than 45 ° C.

FIG. 13 shows the backwashing operation of the filter 90. The filter 90 is periodically backwashed to recover the filtering ability. That is, the switching valves 76 and 92 in the water saving unit 2 are operated to flow the clean water Uo through the filter 90 in a direction opposite to the filtration direction, and the dirt is discharged to the outside using the water pressure and the flow of the clean water Uo. The backwashing of the filter 90 may be performed at regular intervals, or the number of times of supplying the hot water W in the bathtub 6 may be counted, and the backwashing may be performed when the number of times reaches a predetermined number. Backwashing may be performed when the washing water supply operation is completed. Further, when the amount of hot water W passing through the filter 90 decreases to a predetermined value or less, the backwash may be performed after the operation is completed. That is, the backwash timing is as follows.

A. Immediately after the end of washing water supply a. C. Depending on the number of times of remaining hot water supply. For example, unused time around midnight d. Every predetermined time e. When the flow rate of hot and cold water W to the filter decreases to a predetermined amount

When bath water supply, additional heating, toilet water supply, and laundry water supply are selected during backwashing, these operations are prioritized, and then performed.

In the backwashing operation, the switching valves 76 and 88 on the toilet water supply line side are opened to the low tank 4 and the washing machine 8 side. The switching valve 92 for backwashing is operated to switch to the drainage side. When the clean water Uo is introduced and a predetermined time has elapsed, the switching valve 9
Return 2 to its original position.

Next, FIG. 14 shows another embodiment of the hot water supply reheating operation, the washing water supply operation, and the toilet water supply operation. G is the hot water supply reheating operation, H is the washing water supply operation, and I is the toilet water supply operation. . That is, the water level sensor 114 detects the hot water W in the bathtub 6.
It is an example used for the hot water supply additional heating device 10 capable of controlling the water level. In the hot water supply additional heating operation, during the hot water supply or during the heat keeping operation, a hot water supply operation for restoring the water level of the bathtub 6 to the set water level based on the detection value of the water level sensor 114 is performed. During this time, the water supply operation to the washing machine 8 is performed with priority given to the laundry water supply operation. During the warming operation, the additional heating operation is prohibited during the water supply operation to the washing machine 8. When the water supply operation to the washing machine 8 is completed, the supply of hot water W to the bathtub 6 and the reheating are performed.

As another embodiment, the water saving unit 2
May be configured with the exception of the pipelines 53 and 54 that are part of the circulation pipeline 16.

[0108]

As described above, according to the present invention,
The following effects can be obtained. a By installing a water saving unit in the existing hot water supply reheating unit and its piping, hot water in the bathtub can be flushed into the wash water tank and the washing machine of the toilet to save water in the bathtub, and wash the hot water in the bathtub. When used for hot water supply, the amount of heat can also be reduced as compared with tap water heating. b It is necessary to separately prepare piping for supplying clean water to remotely detect water supply destination operations such as washing of washing machines and toilets and supply clean water or bathtub water in conjunction with these operations. Absent. c Since the operation of the washing machine or the washing water tank can be remotely detected by detecting running water, it is possible to eliminate the need for a separate construction for linking with the washing machine or the washing water tank. d At the time of the hot water supply reheating device or the washing water supply operation, the operation of supplying water to the washing tank is switched to the supply of clean water, so that it is possible to save water without hindering daily life. e By giving priority to the hot water supply reheating operation and the washing water supply operation, it is possible to achieve both bathing and washing while saving water.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of a water saving unit and a water saving hot water supply / reheating system of the present invention.

FIG. 2 is a diagram showing an example of an internal structure of a hot water supply reheating device and a water saving unit.

FIG. 3 is a block diagram showing a control device.

FIG. 4 is a block diagram showing a control device.

FIG. 5 is a view showing a hot water supply path to a low tank.

FIG. 6 is a diagram showing a supply path of hot and cold water to a washing machine.

FIG. 7 is a diagram showing a hot water supply path to the washing machine.

FIG. 8 is a flowchart showing operations of additional hot water supply, toilet water supply, and washing water supply.

FIG. 9 is a flowchart showing an operation of supplying water to the washing machine.

FIG. 10 is a flowchart showing an operation of supplying water to a low tank.

FIG. 11 is a diagram showing a relationship between a hot water supply additional heating operation, a washing water supply operation, and a toilet water supply operation.

FIG. 12 is a diagram showing a relationship among a washing machine operation, a washing water supply operation, and a toilet water supply operation.

FIG. 13 is a diagram showing a backwash operation of the filter.

FIG. 14 is a diagram showing another embodiment of the hot water supply additional heating operation, the washing water supply operation, and the toilet water supply operation.

[Explanation of symbols]

 2 Water saving unit 4 Low tank (wash water tank) 6 Bath tub 8 Washing machine 18 Water pipe 20 Hot water pipe 22 Pipe (toilet water pipe) 24 Pipe (washing water pipe) 26, 46 Open / close valve 51, 52, 53, 54 pipe Road 55 Branch line 90 Filter 76, 88 Switching valve (water supply switching means) 78, 86 Water volume sensor 82 Open / close valve 90 Filter (filtering means) 98 Heat exchanger (first heating means) 100 Heat exchanger (secondary) Heating means) 106 water amount sensor 111 running water switch 114 water level sensor 120 branch pipe (hot water supply pipe) 122 open / close valve 126 water quantity sensor 146 hot water supply reheating control unit (control means) 178 water saving control unit (control means) 204 hot water supply reheating remote control unit (Control means) 236 Water-saving remote control unit (Control means) Uo Water supply Uh Hot water (water supply) W Hot water (remaining hot water in bathtub 6)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshihiro Kubota 201 Nishi-Kashiwara Nitta, Fuji City, Shizuoka Prefecture F-term in Takagi Industries Co., Ltd.

Claims (17)

[Claims] 1. A water supply pipe for supplying clean water, a hot water supply pipe for heating clean water by a first heating means, and a water saving pipe provided in a circulation pipe for circulating hot water in a bathtub to a second heating means. A first conduit for supplying water to a flush water tank of a toilet; a second conduit for supplying water or hot water to a washing machine; and a circulation conduit or the clean water conduit for the first conduit. Water supply switching means for selectively communicating the water pipe, the hot water supply pipe or the circulation pipe with the second pipe, and providing the washing water tank with hot or cold water on the bathtub side. A water saving unit, characterized by pouring clean water and supplying clean water to the washing machine, hot water or hot water from the bathtub. 2. A water saving unit attached to a water pipe for supplying clean water and a hot water pipe for supplying hot water by heating the clean water by a first heating means, wherein the first water supply unit supplies water to a flush water tank of a toilet. A pipe, a second pipe for supplying water or hot water to the washing machine, a third pipe for circulating hot water in the bath tub to the second heating means, and a third pipe returning from the second heating means side to the bath tub side. 4, the third conduit, the fourth conduit, or the water pipe is selectively communicated with the first conduit, and a water pipe, a hot water supply pipe is connected to the second conduit, Water supply switching means for selectively communicating the third pipe line or the fourth pipe line, and pouring hot water or clean water from the bathtub side into the washing water tank, and supplying clean water to the washing machine. A water saving unit characterized in that the water supply, hot water supply or hot water of the bathtub side is poured. 3. When there is running water to the washing water tank side or running water to the washing machine side, water supply control is performed by selecting a toilet water supply mode for the washing water tank side and a washing water supply mode for the washing machine side. The water saving unit according to claim 1 or 2, further comprising control means for executing (1). 4. Priority is given to water supply to the washing water tank side,
3. The water saving unit according to claim 1, further comprising a control unit configured to execute a hot water supply control to the bathtub when water supplied to the washing water tank side is transferred to clean water. 4. 5. A control for restricting water supply to the washing water tank to water supply during the water supply to the washing machine side, and for supplying the hot water of the bathtub to the washing machine, and for performing the water supply or the hot water supply. 3. The method according to claim 1, further comprising:
The described water saving unit. 6. The water supply to the washing machine side is limited during the reheating cycle of the bathtub side, and the water supply to the washing water tank is limited to clean water. Water saving unit. 7. When a water supply command to the washing machine is received during the water level control in the hot water supply control on the bathtub side, the water level control is interrupted and water is supplied to the washing machine. The water-saving unit according to claim 1 or 2, wherein: 8. A fuel supply system comprising: a branch line connecting the first line and the circulation line; a branch line connecting the second line and the circulation line; and a switching valve as the water supply switching means. The water saving unit according to claim 1 or 2, wherein 9. The water saving unit according to claim 1, further comprising a filtering unit configured to filter hot water in the bath tub that supplies water to the washing water tank or the washing machine of the toilet. 10. A first heating means for heating water supplied from a water pipe to supply hot water to a hot water supply pipe, a second heating means for circulating and heating hot water in a bathtub, and A circulation pipe for circulating hot and cold water in the bathtub, a pump for forcibly circulating hot and cold water in the bathtub in this circulation pipe, a hot water pipe for guiding hot water from the first heating means to the bathtub, and a toilet flush A toilet water pipe for supplying water to a water tank, a laundry water pipe for supplying water or hot water to a washing machine; and selectively communicating the circulation conduit or the water pipe with the toilet water pipe, and a water pipe for the laundry water pipe. Water supply switching means for selectively communicating the hot water supply pipe or the circulation pipe line to supply clean water or hot water in the bath tub side to the washing water tank, and supply clean water, hot water or the bath tub to the washing machine. Water saving hot water supply characterized by supplying hot water on the side Add-fired system. 11. When there is running water to the washing water tank side or running water to the washing machine side, a toilet water supply mode is selected for the washing water tank side and a washing water supply mode is selected for the washing machine side. The water saving hot water supply / reheating system according to claim 10, further comprising control means for executing water supply control. 12. A control means for giving priority to water supply to the washing water tank side and performing control of hot water supply to the bathtub when water supply to the washing water tank side is shifted to clean water. The water saving hot water supply / reheating system according to claim 10. 13. A control for restricting water supply to the washing water tank to water supply during the water supply to the washing machine side, and for supplying hot water of the bathtub to the washing machine, and for performing the water supply or the hot water supply The water-saving hot-water supply / reheating system according to claim 10, further comprising means. 14. The water saving method according to claim 10, wherein water supply to said washing machine side is restricted and water supply to said washing water tank is restricted to clean water during the reheating circulation of said bathtub side. Hot water and reheating system. 15. When receiving a water supply command to the washing machine side during the water level control in the hot water supply control on the bathtub side, the water level control is interrupted to supply water to the washing machine. The water saving hot water supply / reheating system according to claim 10. 16. The toilet water supply pipe and the circulation pipe, a branch pipe connecting the washing water pipe and the circulation pipe, and a switching valve as the water supply switching means. Item 10. A water saving hot water supply / reheating system according to Item 10. 17. The water-saving hot-water supply / reheating system according to claim 10, further comprising a filtering unit configured to filter hot water in the bath tub for supplying water to the washing water tank of the toilet or the washing machine.