JPH0710208Y2 - Bath drain - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bathtub drainage device that can effectively use the remaining hot water in a bathtub.

(Prior Art and Problems) Conventionally, as a device of this type, as shown in JP-A-61-165435, a washing machine is provided with a water supply passage from the bottom of a bathtub, and a predetermined water supply request is received from the washing machine. There is one that automatically supplies water to the washing machine from the bathtub only when the conditions are met.

However, this merely uses the remaining hot water, and cannot supply hot water at a temperature suitable for washing. For example, in the winter season, the remaining hot water is cold when laundering the next day, and it is difficult to say that it is suitable for laundering. Therefore, it was only to save water, and no consideration was given to the convenience and comfort of the supply destination of the remaining hot water.

The present invention is intended to eliminate the above-mentioned conventional drawbacks.
The hot water at the optimum temperature can be supplied to the water injection destination.

(Example) The figure shows an automatic bath device, 1 is a water heater, 2 is a forced circulation type reheating device, 3 is a bathtub, and 4 is a washing machine. Water heater 1
Is equipped with a water temperature sensor 12 and a flow rate sensor 13 in a water inlet 11 to the heat exchanger 14, and a flow rate control valve 16 and a hot water temperature sensor 17 in a hot water outlet 15 from the heat exchanger 14 to Karan (not shown). The hot water having a temperature set by a temperature setting machine (not shown) is discharged. The reheating device 2 is a pump for forced circulation.
A water flow switch 23, a heat exchanger 24, and a forward temperature sensor 25 are provided on a forward path 22 connecting the discharge side of the pump 21 and the bathtub 3, and a return path 26 connecting the pump suction side and the bathtub 26. Is provided with a return temperature sensor 27 and a water level sensor 28.
In the bathtub 3, a discharge port 31 for the outward path 22 is provided on the side wall, and a return path 26 is provided.
A suction port 32 is provided at the bottom. A filter is attached to the suction port 32. Reference numeral 5 is a drop water channel branched from the hot water outlet 15 of the water heater 1 and connected to the return path 26 of the reheating device 2. The flow control valve 51, the flow sensor 52, the vacuum breaker 53, the solenoid valve 54, and the check valve are circulated. 55 is provided.
The return path 26 is connected by a three-way valve 56. A three-way valve 41 is arranged on the outward path 22, and a water injection path 42 to the washing machine 4 is branched. A three-way valve 44 that branches the drainage channel 43 is provided in the middle of the water injection channel 42, and the drainage channel 43 is extended and opened above the drainage channel 45.

Further, the automatic bath device has a central processing unit (hereinafter referred to as CPU) 61, and the water flow switch 2 is provided on the input side of the CPU 61.
3, the water level sensor 28, the thermistors 12, 17, 25, 27 and the flow rate sensors 13, 52, etc. are connected, and a data signal is input to the CPU 61 from each. Further, the solenoid valve 54, the flow rate control valves 16 and 51, the pump 21, the three-way valves 56, 41 and 44 are connected to the memory 62.
It is controlled by the CPU 61 according to the procedure or condition stored in. This CPU 61 corresponds to the control means.

Next, the operation of the above configuration will be described. When the hot water is dropped into the bathtub 3, the solenoid valve 54 of the drop channel 5 is opened, and the pump 21 side of the three-way valve 56 and the drop channel 5 side are opened. Then, a water flow is generated in the water heater 1, and hot water heated to the set temperature by the heat exchanger 41 is discharged by a burner (not shown). Hot water comes from the exit channel 15 → drop channel 5 →
Pump 21 → outward route 22 → discharge port 31 → tub 3 are dropped in this order. At this time, the drop flow rate flowing through the drop water channel 5 is detected by the flow rate sensor 52, and when the integrated value of the detected flow rate reaches a predetermined hot water supply amount, the electromagnetic valve 54 is closed to stop hot water supply. Further, at the time of dropping, the water level sensor 28 detects the water level in the bathtub 3, and when the water level rises to a predetermined water level, the electromagnetic valve 54 can be closed to stop the hot water supply.

Next, in the case of additional heating, the pump 21 is operated to circulate the bath water, the hot water temperature is detected by the return temperature sensor 27, and when the hot water temperature is lower than the set temperature, the hot water is heated by the heat exchanger 24. When the return temperature sensor 27 detects that the set temperature has been reached, the pump 21 is stopped and the reheating operation is stopped.

Next, the case of using the remaining hot water will be described.

When the washing water pouring switch is pressed by the operation unit (not shown), it is determined whether there is any hot water remaining in the bathtub 3 by the signal of the water level sensor 28 (S1). When there is remaining hot water, the pump 21 is operated, and when the water flow switch 23 is turned on and it is confirmed that there is water (S2.S3), the outgoing temperature sensor 25 detects the temperature of the remaining hot water (S4). If the residual hot water temperature To is higher than the optimum temperature Ts (S
5), the three-way valve 41 connects the outward path 22 and the water injection path 42, the three-way valve 44 closes the drain path 43 side, and injects water into the washing machine 4 (S7).

If the residual hot water temperature To has cooled in step 5 and has not reached the appropriate temperature Ts, the burner (not shown) is ignited and the heat exchanger is heated.
Heat to a suitable temperature Ts at 24 (S6). And at the same time three-way valve 41
Switch 44 and 44 (S7) and inject water.

When water injection is completed (S8), the pump 21 is turned off, and if the burner is ignited, it is extinguished (S9).

When it is determined in step 1 that there is no remaining hot water, the three-way valves 41 and 44 are switched to the water injection path 42 side, and the three-way valve 56
Drop it in and switch to the waterway 5 side (S10).

Then, the solenoid valve 54 is opened to drop the water from the water heater 1, the water path 5, the outflow path 22, the water injection path 42, and the hot water of an appropriate temperature is poured to inject the water (S1
1). Then, when the water injection is completed (S12), the solenoid valve 54 is closed and the operation of the water heater 1 is stopped (S13).

At the beginning of water injection and when draining, set the three-way valve 44 to the drainage channel 43.
By switching to the side, it is possible to drain the remaining hot water for a certain time.

Further, the residual hot water supply temperature Ts is not constant and may be freely adjusted.

(Effect of the Invention) As described above, according to the present invention, when the remaining hot water is used in the washing machine or the like, the remaining hot water is heated according to the temperature of the remaining hot water. Therefore, when it is used for washing, dirt can be easily removed and it is convenient, and the user does not feel uncomfortable with cold water.
Further, when there is no remaining water in the bathtub, it is possible to supply hot water of the optimum temperature from the drop path side to the water injection destination.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is a block diagram of the same as above, and FIG. 3 is an operation flowchart when the remaining hot water is poured. 2 …… Additional heating device 3 …… Bathtub 4 …… Washing machine 21 …… Pump 22 …… Outward path 24 …… Heat exchanger 25 …… Outgoing temperature sensor 42 …… Water injection path

Claims (1)

[Scope of utility model registration request] 1. A reheating device that sucks in bath water by a pump, circulates the heat in a heat exchanger to heat it, and then conveys it to the bath.
A drop water channel connected to the reheating apparatus for dropping into the bathtub, a water injection path branched from an outward path of the reheating apparatus to the bathtub and guided to a washing machine, and an outlet side of the heat exchanger of the reheating apparatus. Temperature sensor provided in the, a water level sensor for detecting the residual water of the bathtub, the residual water of the bathtub is guided to the water injection channel through the reheating device on condition that the water level sensor detects the presence of residual water, and the water level sensor When it detects that there is no residual water, it guides from the drop channel to the water injection channel through the reheating device, and when the temperature sensor detects a low temperature, controls to perform heating with the heat exchanger A bathtub drainage device comprising: