JPH0534008A - Hot water filling control method for automatic bath equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] An automatic bath device that uses a flow sensor instead of a water level sensor to sprinkle hot water into a bathtub. A small amount of hot and cold water is dropped into the bathtub to determine the remaining water. It is an object of the present invention to provide a control means for an automatic bath apparatus provided with a set flow rate changing means for changing the set flow rate to a set flow rate smaller than the set flow rate set in advance in the remote controller when it is judged that there is residual water in the bathtub in the judgment .. [Structure] A hot water supply circuit for supplying hot water to the bathtub, a reheating circuit for reheating the hot water in the bathtub, a flow rate detecting means for detecting a flow rate supplied to the bathtub, and a flow rate supplied to the bathtub An automatic control unit equipped with a flow rate setting means for setting the flow rate Bath equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water filling control method for an automatic bath apparatus without a water level sensor.

[0002]

2. Description of the Related Art As an example of a conventional automatic bath device without a water level sensor, there is an example of utility model registration application No. Hei 2-69756. The example will be described with reference to FIGS. 3 and 4. Incidentally, FIG. 3 shows a configuration of an automatic bath device of a conventional example, and FIG. 4 shows a flow chart in control. In FIG. 3, 6
1 is an automatic bath device, and 62 is a bathtub. The automatic bath device 61 incorporates a hot water supply device 63 and a forced circulation heating device 64. At 63, a flow rate sensor 31 and a flow rate control valve 32 are arranged in the hot water supply circuit 33. A circulation pump 41 is arranged in the circulation circuit 42 in the forced circulation reheating device 64. Reference numeral 65 is a drop-in hot water supply circuit, which is a flow control valve 32 of the hot water supply circuit 33.
The downstream side is connected to the circulation circuit 42, and a drop flow rate sensor 51, a vacuum breaker 52, and a drop solenoid valve 53 are arranged in this order. 66 is a control device,
The output of each flow rate sensor 31, 51 is input to the flow rate control valve 3
2. The electromagnetic valve 53 is driven and controlled.

Next, the conventional control will be described with reference to FIG. When the automatic drop button on the remote controller (not shown) is pressed, the automatic drop is started (S21).
Then, the drop solenoid valve 53 is opened (S22) to start dropping, and the drop flow rate sensor 51 integrates the drop flow rate (S23).

Next, in the judgment mode of whether or not the integrated amount of the drop flow rate sensor 51 has reached the drop set flow rate (S24), the drop solenoid valve 5 is reached when the set flow rate is reached.
3 is closed (S25), and the automatic dropping is finished (S26). The drop setting flow rate for dropping is set by a remote controller (not shown).

[0005]

However, in the conventional automatic bath apparatus that does not use the water level sensor, when there is residual water in the bathtub, in order to prevent the hot water from overflowing from the bathtub, the residual water in the bathtub must be prevented. Depending on the amount of water, the user may change the bath flow rate by using the remote control to prevent hot water overflow, or the water may be set in the remote control after draining the bath water to prevent hot water overflow. However, in the above-mentioned method, even though the hot water in the bathtub can be prevented, the user is troubled and troublesome in addition to pressing the automatic hot water button.

Therefore, in the present invention, when the automatic drop button is pressed while the residual water is still present in the bathtub, even if the user drops hot water into the bathtub without changing the drop flow rate, It is an object of the present invention to provide a control device in an automatic bath device that can change the flow rate dropped into a bathtub to prevent the overflow of hot water from the bath without the user changing it.

[0007]

To solve the above problems, the present invention provides a hot water supply circuit for supplying hot water to a bathtub, a reheating circuit for reheating the hot water in the bathtub, and a reheating circuit in the bathtub. In a water filling control method for an automatic bath apparatus, which includes a flow rate detecting means for detecting a flow rate and a control section having a flow rate setting means for setting a flow rate to be supplied to a bathtub, when the automatic water filling switch is turned on, If a constant flow rate is dropped through the flow rate adjusting means for dropping, the residual water in the bathtub is determined after stopping the flow rate adjusting means, and if it is determined that there is no residual water in the residual water determination, the flow rate is set in advance. If the flow rate drops to the set flow rate set in the setting means, and if it is judged by the residual water determination that there is residual water, the flow rate will be changed to a lower flow rate than the set amount set in advance in the flow rate setting means. To is characterized in that a darken flow changing means dropping the its modified darken flow.

[0008]

In the automatic bath apparatus, after dropping 10 l into the bathtub, the residual water is judged, and if there is no residual water, the preset flow rate is dropped, and if there is residual water, the preset flow rate is lower than the preset flow rate. Since the reduced flow rate is dropped, the probability of hot water overflowing from the bathtub can be suppressed as compared with the conventional automatic bath device that simply drops the preset flow rate.

[0009]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, in which 1 is an automatic bath device, 2 is a bathtub, 3 is a reheating circuit, and 4 is a hot water supply circuit. The reheating circuit 3 is a pump 9
From the bath heat exchanger 7 to the bath adapter of the bathtub 2
5 and a return route 6b from the bus adapter to the pump 9. A water flow switch 8 is provided in the forward route 6a, and the thermistor 2 is provided in the return route 6b.
0 is provided.

The hot water supply circuit 4 includes a flow rate sensor 21, a thermistor 16, a hot water supply heat exchanger 10, a flow rate adjusting valve 17, a thermistor 18, a flow rate adjusting valve 13, a flow rate sensor 14, and a vacuum.
It is connected to the reheating circuit 3 via a breaker 19, a stop valve 11 and a check valve 12. Reference numeral 15 denotes a hot water supply branch circuit that branches from the middle of the hot water supply circuit 4 to reach an appropriate hot water supply location. When the automatic filling button 24 of the remote controller 23 is pressed, the shut-off valve 11 is opened by a signal sent from the sequence controller 22, and hot water is dropped from the hot water supply circuit 4 through the reheating circuit 3 into the bathtub. Get caught. The flow rate sensor 14 detects the flow rate of hot water supplied from the hot water supply circuit 4 into the bathtub 2 through the reheating circuit 3, and the flow rate detection signal is sent to the sequencer controller 22. , The sequence controller 22 integrates the flow rate values to obtain a flow rate (integrated flow rate). The flow rate adjusting valve 13 adjusts the flow rate dropped into the bath 2 and is controlled by a signal from the sequence controller 22.
The flow rate adjusting valve 17 adjusts the flow rate dropped into the hot water supply branch circuit 15 and the hot water supply circuit 4, and is controlled by a signal from the sequence controller 22.
The flow rate sensor 21 detects an incoming water flow rate from city water, and the detected incoming water flow rate is sent to the sequencer controller 22 as a flow rate detection signal.

Next, the filling operation using the automatic bath apparatus 1 having the above construction will be described with reference to the flow chart of FIG. When the automatic water filling button 24 of the remote controller 23 is turned on, the automatic water filling starts (S1), the shutoff valve 11 is opened (S2), and the liquid sensor starts to be dropped into the bathtub, and then the flow sensor 14 drops it into the bathtub 2. The accumulation of the flow rate is started (S3), the judgment mode of whether or not the cumulative flow rate has reached 10 l is entered (S4), and when the cumulative flow rate reaches 10 l, the stop valve 11 is closed (S5), The determination mode (S6) for determining whether or not there is residual water in the bathtub 2 is entered. The residual water determination here is to determine whether or not the water flow switch 8 is turned on by turning on the pump 9, and if the water flow switch 8 is turned on, it is considered that there is residual water in the bathtub 2 and the water flow is determined. If the switch 8 is OFF, it is considered that there is no residual water in the bathtub 2. If it is considered that there is no residual water in (S6),
The shut-off valve 11 is opened (S8 '), and the dropping operation is restarted, and the remote control setting mode is entered in the mode (S9') for determining whether the dropping flow rate has reached the set flow rate of the remote control. When the drop flow rate reaches the flow rate, the stop valve 11 is closed (S10), and the drop is completed.

When it is judged that there is residual water in the step (S6), the flow rate for dropping is changed from the flow rate set by the remote controller to the minimum flow rate (for example, 60 l) (S7), and the shut-off valve 11 is opened (S8) for dropping. Then, the process goes to the mode (S9) for determining whether the drop flow rate has reached the changed set flow rate, and when the changed drop flow rate is reached, the stop valve 11 is closed (S10) and the drop is completed. .. In the present embodiment, after the dropping is completed,
Pump 9 is turned on (S11), water flow switch 8 is turned on
It is judged whether or not it is done (S12), and the water flow switch 8
If is not turned on, the full load is turned off (S15) and the automatic bath apparatus 1 is stopped. In other words, this is because it is not preferable to continue the load as it is, because inconveniences such as pipe clogging have occurred. In the step (S12), when the water flow switch 8 is turned on, the hot water temperature in the bathtub 2 is heated to the hot water temperature indicated by the bath temperature setting button 26 of the remote controller 23 (S13), and the set hot water temperature is set. When reaching, the automatic hot water beam ends (S14).

[0014]

EFFECTS OF THE INVENTION According to the present invention, in short, a small amount of hot water (10 l in the present proposal is used, but it is not necessary to limit to 10 l) is used to determine the remaining water. A set flow rate that is smaller than the set flow rate of the remote controller (in the present invention, 60 l is set as an example,
The setting flow rate changing means for changing the setting flow rate is not necessarily limited to 60 l).

That is, in the conventional automatic bath apparatus which does not use the water level sensor, when there is residual water in the bathtub, the flow rate set in the remote controller is dropped as it is, so the hot water in the bathtub is dropped. There was a high probability that it would overflow from the bathtub. However, in the present invention, by providing the set flow rate changing means for changing the set flow rate of the remote controller to a set flow rate which is smaller than the preset flow rate when there is residual water in the bathtub, the hot water from the bathtub can be dropped when dropped. This has the effect of lowering the probability of flooding.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an automatic bath device showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the contents of the embodiment of the present invention.

FIG. 3 is an overall configuration diagram of a conventional automatic bath device.

FIG. 4 is a flow chart showing the contents of a conventional automatic bath device.
It's a chart.

[Explanation of symbols]

 1 Automatic Bath Device 2 Bathtub 9 Pump 11 Stop Valve 14 Flow Sensor 23 Remote Control 24 Automatic Water Filling Button 25 Flow Setting Button

Claims (1)

Claim: What is claimed is: 1. A hot water supply circuit for supplying hot water to a bathtub, a reheating circuit for reheating the hot water in the bathtub, and a flow rate detection for detecting the flow rate supplied to the bathtub. In the method for controlling the filling of an automatic bath apparatus, which includes a means and a controller having a flow rate setting means for setting the flow rate to be supplied to the bathtub,
When the automatic water filling switch is turned on, a constant flow rate is dropped through the flow rate adjusting means for dropping, and after the flow rate adjusting means is stopped, the residual water in the bathtub is determined, and it is determined that there is no residual water in the residual water determination. If it is determined, the flow rate is set to the set flow rate set in advance by the flow rate setting means, and if it is determined that there is residual water in the residual water determination, it is lower than the set amount set in advance by the flow rate setting means. A pouring control method for an automatic bath apparatus, characterized in that a drop flow rate changing means is provided for changing the drop flow rate to a small value and dropping the changed drop flow rate.