JP3126512B2 - Control device for circulation pump of bath water purification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to operation control of a circulation pump of a bath water purification device, and more particularly to temperature control of bath water by operation control of a circulation pump.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a bath water purifying apparatus 20 comprising a control unit 16 and a purifying unit 17 has been proposed. The control unit 16 includes a bath water purification device 2 (not shown).
An input unit for setting operation conditions of 0, setting conditions,
A purifying unit 1 including a display unit for displaying various kinds of operation status and the like.
And a control device that receives the outputs of various sensors such as a hot water temperature detection unit from 7, and controls these as a whole.

[0003] Purification unit 17 controlled by control unit 16
Means that the circulating pump 13 removes the bath water from the bathtub 10 from the suction side 11 of the
2. Circulation pump 13, warming heater 14, and sterilizer 1
Circulating through the discharge side 11 'of the circulation path via 5 and the like,
The bath water is kept warm, and the dirt of the bath water is removed and purified.

In this conventional example, the control of the temperature of the bath water by the set value of the bath water purifying device is performed by comparing the detected hot water value of the bath water with the set hot water temperature value, and controlling ON / OFF of the warm water heater. Had gone by.

[0005]

In order to raise the bath water to the set hot water value by the bath water purifier, the heat retention heater is turned on.
You can do it. However, since there is no device for lowering the hot water temperature, in a bathroom having a very good heat retaining performance, especially in summer, the bath water reaches the set hot water temperature value and the heat retaining heater is turned off.
Even after the temperature becomes F, there is a problem that the hot water temperature of the bath water gradually exceeds the set hot water temperature value due to the heat generated by the continuous operation of the circulation pump for circulating the bath water.

[0006]

According to the present invention, in order to solve the above-mentioned problems of the prior art, in a bath water purifier, a bath temperature of a bath water reaches a set bath temperature and a heat retaining heater is turned off. Later, the difference between the bath water temperature value and the set hot water temperature value is determined by the time that the state continues within a predetermined positive value range, and the rise in the water temperature is caused by the heat generated by the circulation pump. It is determined whether or not the heat is generated by the heat of the circulation pump. After the bath water reaches the set hot water temperature value, it is possible to prevent the hot water temperature value of the bath water from gradually rising beyond the set hot water temperature value due to heat generated by the continuous operation of the circulation pump.

[0007]

According to the present invention, after the bath temperature reaches the set bath temperature and the heat retention heater is turned off, whether the temperature rise of the bath temperature is caused by the heat generated by the circulation pump. It is determined whether or not the heat is generated by the circulating pump, and when the circulating pump is determined to be caused by heat generation, the circulating pump is switched from the continuous operation to the intermittent operation so as to reduce the heat generated from the circulating pump. After the bath water reaches the set hot water temperature value, there is an effect that the hot water temperature value of the bath water can be prevented from gradually rising beyond the set hot water temperature value due to heat generated by continuous operation of the circulation pump.

Secondly, the operation control of the circulation pump is performed by determining whether or not the temperature rise of the bath water temperature is caused by the heat generated by the circulation pump. When the bath water is heated, the temperature of the hot water rises more quickly than when the circulation pump generates heat, so that the circulation pump does not switch from continuous operation to intermittent operation, and the continuous operation of the circulation pump is preferable. It has the effect of purifying bath water.

[0009]

【Example】

(1) Configuration of Bath Water Purification Device First, the configuration of the bath water purification device of the present invention will be described with reference to FIG. In the figure, the hot water temperature setting device 1
This is for setting the hot water temperature desired by the user. The storage device 2 stores the set hot water temperature value set by the hot water temperature setting device 1. The hot water temperature detecting device 3 is a device for detecting a hot water temperature of bath water.

The temperature difference judging device 4 determines whether the temperature difference between the bath water temperature value detected by the hot water temperature detecting device 3 and the set hot water temperature value stored in the storage device 2 is a certain positive value. A device that determines whether a value is within a range. If the value is within the range, an ON signal is output; otherwise, an OFF signal is output.

The temperature difference stability determining device 5 (hereinafter, the stability determining device 5 determines that the temperature difference is within a predetermined plus value range by the temperature difference determining device 4,
This is a device that starts measuring time when an N signal is received and determines whether the output of the ON signal continues for a preset time.

The circulating pump control device 6 is a device for controlling the continuous operation or intermittent operation of the circulating pump 8 for circulating the bath water through the circulating pump driving device 7 according to the judgment of the stability judging device 5. The circulating pump control device 6 and the circulating pump driving device 7 constitute a circulating pump operating device 9.

(2) Description of Operation Next, the operation of the bath water purification device will be described with reference to FIG. In the figure, Sn (n = 1, 2, 3,...)
() Shows each processing step of the control.

S1, S2 When changing the set hot water temperature value, the user changes the set hot water temperature value with the hot water temperature setting device 1 in S2, and sets it. The set hot water temperature value is stored in the storage device 2. If the set hot water temperature value is not to be changed, the process proceeds to S3. The set hot water temperature value in this case is stored in the storage device 2 as a value that has already been set or a predetermined value that is predetermined by the device.

S3 The temperature difference judging device 4 subtracts the set hot water temperature value stored in the storage device 2 from the hot water temperature value detected by the hot water temperature detecting device 3 to obtain a predetermined positive value. Determine if it is within the range. If it is within this range, the process proceeds to S4, and if it is not, the process proceeds to S5.

S4 to S6 When the temperature difference is within the range, the temperature difference judging device 4 outputs an ON signal to the stability judging device 5, and the temperature difference stability judging device 5 receiving the ON signal outputs the ON signal. Start measurement, S4
If it is determined that the ON signal has continued for a preset time in step S6, the process proceeds to step S6, and the circulating pump that has been continuously operated is switched to intermittent operation in step S6.

When there is no ON signal from the temperature difference judging device 4 or when the ON signal does not continue for a preset time, the stability judging device 5 does not start the time measurement or does not measure the time. If there is, stop measuring the time, proceed to S5, issue a command for continuous operation of the circulation pump 8 to the circulation pump operation device 9, and continuously operate the circulation pump 8.

As described above, after the bath temperature reaches the set bath temperature value, the difference between the detected bath temperature value and the set bath temperature value falls within a predetermined plus value range. Since the presence and the state continue for a preset time, it is determined that the rise in the hot water temperature is caused by the heat generated by the continuous operation of the circulation pump, and the intermittent operation of the circulation pump is performed. Is not switched to intermittent operation due to reheating, etc.

Incidentally, the duty ratio of the intermittent operation of the circulating pump can be set so as to be optimal according to the condition and season of the bathroom, and the temperature difference judging device 4 and the stability judging device 5 can be set. Can also be set so that the continuation time serving as the criterion for the determination becomes optimal.

Regarding the operation control of the circulating pump, from the point of view of purification of bath water, the bath water is constantly circulated by continuous operation.
It is desired to purify the bath water in good condition. However, it is also desirable to operate the circulation pump intermittently so that the bath temperature does not exceed the set bath temperature even if the purification of the bath water is somewhat sacrificed.

Some users place importance on purifying the bath water in a good condition even if the temperature of the bath water exceeds the set hot water value. Some users value the fact that the set hot water temperature is properly set.

Therefore, the control function of the circulating pump of the present invention can be made to operate whenever the condition for keeping heat in a bathroom or the like is satisfied. As a hidden function, the control function can be switched and selected by a special operation so that only a service person can perform the control function, so that the user's request can be met.

[0023]

As described above, according to the present invention, after the hot water temperature reaches the set hot water temperature and the heat retention heater is turned off, the temperature rise of the hot water temperature of the circulating pump increases. It is determined whether or not the heat is due to heat generation, and when it is determined that the heat is generated by the circulation pump, the circulation pump is switched from continuous operation to intermittent operation to reduce heat generation from the circulation pump. As shown in the example, after the bath water reaches the set hot water temperature value, an effect is obtained that the hot water temperature value of the bath water can be prevented from gradually rising beyond the set hot water temperature value due to heat generated by continuous operation of the circulation pump. .

Secondly, the operation control of the circulation pump is performed by determining whether or not the temperature rise of the bath water temperature is caused by the heat generated by the circulation pump. When the bath water is heated, the temperature of the hot water rises more quickly than when the circulation pump generates heat, so that the circulation pump does not switch from continuous operation to intermittent operation, and the continuous operation of the circulation pump is preferable. The effect of purifying the bath water can be obtained.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a main part of a control device according to the present invention.

FIG. 2 is a flowchart showing a processing procedure of the control device of the present invention.

FIG. 3 is a block diagram showing a schematic configuration of a conventional example of a bath water purification device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hot water temperature setting device 2 storage device 3 hot water temperature detecting device 4 temperature difference judging device 5 temperature difference stability judging device 8 circulation pump 9 circulation pump operating device

Claims (1)

(57) [Claims] 1. A bath water purifier for purifying a bath water by circulating the bath water in a bath tub through a circulation path including a filtration device and a heater for keeping the temperature by a circulation pump, wherein a water temperature value set by a user is set. A hot water temperature setting device that stores the hot water temperature value in the storage device, a hot water temperature detecting device that detects the hot water temperature value of the bath water, and a temperature difference between the hot water temperature value and the set hot water temperature value is a predetermined plus value. A temperature difference determination device that outputs an ON signal when the temperature difference is within a range of a value, a temperature difference stability determination device that determines whether the ON signal output from the temperature difference determination device continues for a predetermined time, A circulation pump for circulating bath water;
When the N signal continues for a predetermined time, the circulation pump is switched from the continuous operation to the intermittent operation via the circulation pump operation device.