JP2565042B2 - Automatic bath filling method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically filling a bath.

[0002]

2. Description of the Related Art An example of a conventional bath automatic filling method in consideration of overflow prevention will be described with reference to the flowchart of FIG. First, when the automatic water filling switch is turned on,
It is judged whether or not there is a change in the drop water amount setting (step 101), and if there is a change, it is judged whether 30 minutes or more have passed after the change (step 102). If it is within 30 minutes, the set drop water amount is kept as it is. Drop (step 103). If there is no change in the amount of hot water dropped in step 101, 10 liters of water is dropped first (step 104), and then circulation is judged (step 105).
). The circulation determination is an operation to determine whether or not the bath water circulates in the bath reheating circulation path by driving the circulation pump. When the circulation determination does not circulate (when it is off)
Drops the amount of hot water obtained by subtracting the previously dropped 10 liters from the set amount of hot water dropped (step 106). If the circulation is determined in the circulation determination (step 105) (if it is ON), the dropping is finished as it is. When the dropping is completed, the reheating operation is automatically or manually started (step 107), and then the heat retention operation is automatically or manually started (step 108).

[0003]

However, in the above-mentioned conventional method of filling water, when there is residual water in the bathtub (step 10).
If the circulation determination is ON in step 5), and if the continuous drop is made with the same set pouring hot water amount (when the setting is not changed in step 101), 2
After the first time, all had the drawback that only 10 liters were added and they were dropped and the filling of water ended.

Therefore, the present invention solves the above-mentioned drawbacks of the conventional automatic water filling method for baths, prevents the overflow water from overflowing from the bathtub to a certain extent, and drops water at a low bathtub level (filling water). The purpose is to provide an automatic bath filling method that does not end.

[0005]

In order to achieve the above object, the method for automatically filling a bath of the present invention is such that hot water or water from a water heater is automatically introduced into a bathtub through a bath reheating circulation path. darken, a method of performing bath water filling of, firstly dropped into predetermined small an amount the bathtub, then by driving the circulation pump of the bath reheating circulation path
The circulation path for reheating the bath tub water to the circulation determine whether circulating, when the currently circulating is performed in the circulation determination
Is further determined whether or not the set amount of pouring hot water set this time is greater than or equal to the maximum amount of pouring hot water stored so far, and if the amount of pouring hot water is equal to or more than the maximum amount of pouring hot water , the hot water filling is finished at that time, On the other hand, it will circulate but this time
When the set drop-in hot water amount is less than the maximum drop-in hot water amount
And if there is no circulation in the circulation judgment,
Is further characterized in that the amount of hot water dropped by subtracting the amount of hot water dropped earlier from the preset amount of hot water dropped this time is dropped.

[0006]

According to the above feature of the present invention, only when it is determined in the circulation determination that there is circulating water (there is residual water), and the preset amount of dropped hot water is equal to or greater than the stored maximum amount of dropped hot water, the first The filling operation is completed by dropping a small amount of water. Therefore, in other cases, the set pouring hot water amount is actually dropped as a whole, so that the filling is less likely to end with the initial small pouring hot water amount. In addition, since the amount dropped when it is determined by the circulation determination that there is circulating water (there is residual water) is less than the previously stored maximum amount of hot water dropped, the bathtub will not overflow due to the amount of hot water dropped, and Even if it overflows, the amount does not increase so much. As the stored maximum amount of pouring hot water, a set pouring hot water amount in the case where the circulation is not circulated (no) is made a candidate, but is learned as the device is used. Of course, as the maximum amount of dropped water, during the adjustment operation (test run) when installing bathtub equipment, find the appropriate amount of dropped water when filling the installed bathtub from an empty state, and find the appropriate amount of hot water. It may be stored.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. FIG. 1 is an overall configuration diagram of a water heater with a bath automatic hot water supply function that implements the method of the present invention, FIG. 2 is a flow chart showing an embodiment of the method of the present invention, and FIG. 3 is a flow chart showing a maximum drop hot water storage process.

Bath water in the bathtub 10 passes from the circulation fitting 11 through the bath return pipe 31 and is circulated by the circulation pump 21 to the bath heat exchanger 22.
Is circulated through the bath outlet pipe 32 and the circulation fitting 11 to the bathtub.
Return to within 10. The bath return pipe 31 and the bath return pipe 32 form a circulation path. Further, a bath water quantity switch 23 is provided on the downstream side of the circulation pump 21 and a bath return pipe 31 leading to the bath heat exchanger 22.
A bath temperature sensor 24 is provided. The bath gas burner 25 is ignited only when the amount of water passing through the water amount switch 23 is a certain amount or more. The bath temperature sensor 24 detects the bath temperature.

Reference numeral 40 is a hot water supply heat exchanger, and 41 is a gas burner thereof. The supplied water enters the hot water supply heat exchanger 40 through the water inlet pipe 42, is heated, and is discharged to the hot water outlet pipe 43. A water quantity sensor 44 and a water temperature sensor 45 are provided on the water pipe 42. A hot water outlet temperature sensor 46 is provided on the hot water outlet pipe 43. The hot water outlet pipe 43 is branched into a general hot water supply pipe 50 and an automatic bath drop pipe 60. A curran (not shown) is provided at the end on the side of the general hot water supply pipe 50. on the other hand,
The hot water sent to the bath automatic drop pipe 60 is sent to the bath outgoing pipe via the drop valve 61 so that the hot water can be automatically supplied into the bathtub 10. Reference numeral 62 is a drop water amount sensor. Fuel gas is supplied to each of the burners 25 and 41. Of course, the liquid fuel may be supplied and the burner for the liquid fuel may perform combustion. Reference numeral 70 denotes a controller, which has a built-in microcomputer, receives information from sensors of each part of the device and a command from the bath remote controller 80, and issues a predetermined operation command to each part of the device.

The bath remote controller 80 is provided with a drop hot water amount setting unit, a bath temperature setting unit, a bath automatic operation switch, and an error display unit described later. The control operation by the controller 70 when the bath automatic operation switch is turned on will be described with reference to FIG. 2, focusing on the automatic filling operation. Now, when the remote controller 80 sets the amount of dropped hot water, the bath temperature is set, and the automatic operation switch is turned on, the controller 70 first commands the automatic filling of the bath. In automatic filling, 10 liters are dropped into the bathtub 10 as a small amount (step 111). Then, the circulation pump 21 is driven for a certain period of time, and whether or not the bath water circulates in the circulation paths 31 and 32 is detected by the water flow switch 23 to determine the circulation (step 112). When the switch 23 is turned on, it is determined that there is circulation, that is, that there is residual water in the bathtub 11 or more. In this case, the process proceeds to step 113, and it is further determined whether or not the set pouring hot water amount is equal to or more than the stored maximum pouring hot water amount (step 113). After the hot water filling operation is finished and the heating operation is started (step 114), an error is displayed on the remote controller 80 after the heating operation (step 115). The error display is an indication that the dropping was substantially impossible and that the amount of the dropping hot water was not set properly.

In step 112, if the switch 23 is off (there is no residual water above the circulation fitting 11), and if the set drop water amount is less than the stored maximum drop water amount (no) in step 113, Drop 10 liters of the amount of hot water dropped first from the set amount of hot water dropped (step 116). Then, the maximum amount of hot water storage processing is performed (step 117). On the other hand, the heating operation is started (step 118), and when the heating is finished, the warming operation operation is started (step 119).

The stored maximum amount of dropped hot water is used as a virtual bathtub capacity, but the maximum amount of hot water stored in step 117 is performed according to the flow shown in FIG. That is, the controller 70 determines whether or not the set drop-in hot water amount that has actually been dropped exceeds the stored maximum drop-in hot water amount (step 121),
If it exceeds, the set drop-in hot water amount at this time is stored as the maximum drop-in hot water amount (step 122). on the other hand,
If it does not exceed the limit, the current maximum amount of dropped water is continuously stored.

[0013]

According to the automatic bath filling method of the present invention, the present invention is configured to circulate in the circulation determination, and the set drop water amount at that time is stored. Only when the amount of hot water to be poured is greater than the maximum amount of water to be dropped, the pouring operation is completed by only dropping a small amount of the first amount. Therefore, it is possible to reduce the number of cases in which the filling of water is completed only by dropping a small amount at the beginning. Moreover, when there is residual water in the bathtub, the amount of hot water dropped is less than the previously stored maximum amount of hot water that has been memorized. It doesn't increase.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a water heater with a bath automatic hot water supply function, in which a method of the present invention is implemented.

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

FIG. 3 is a flowchart showing a maximum pouring hot water amount storage process.

FIG. 4 is a flowchart showing an example of a conventional method.

[Explanation of symbols]

 10 Bathtub 11 Circulation fitting 22 Bath heat exchanger 24 Bath temperature sensor 26 Bath water level sensor 40 Hot water supply heat exchanger 60 Bath automatic drop pipe 70 Controller 80 Remote controller

Claims (1)

(57) [Claims] 1. A method of automatically dropping hot water or water from a water heater into a bathtub through a bath-heating circuit to fill the bathtub with a predetermined small amount of water. darken the bathtub, then whether the circulation determination bath tub water by driving the circulation pump of the bath reheating circulation path to circulate the circulation path for reheating, apply in this circulation determination
If there is an actual circulation, set it again this time.
Setting darken hot water there are, determines the maximum darken whether or not hot water over hitherto stored, the maximum drop
If the amount of hot water to be poured is equal to or greater than the amount of hot water to be poured, the hot water filling will be terminated at that point, while the circulating water will be circulated, but the current amount of hot water to be dropped will be the maximum.
If the amount is less than the amount of hot water dropped
When the circulation is not made, the automatic bath filling method is further characterized in that the amount of hot water dropped is subtracted from the amount of hot water dropped earlier than the preset amount of hot water dropped this time.