JPH0571802A - Cleaning device for bathtub hot water - Google Patents

Abstract

PURPOSE:To carry out the operation accurately and safely by providing a water flow sensor detecting the presence of the flow in the circulating path of bathtub hot water and a water-flow sensor checking means checking the presence of the abnormality of the operation of the water flow sensor. CONSTITUTION:The presence of the abnormality of a water flow sensor 13 is checked by a specified program by a water-flow sensor checking means 18, and abnormality is displayed. The abnormality is checked repeatedly at every fixed time by another program under the state of operation. That is, when a power supply is turned ON, whether or not a cleaning device is under the state of operation in which operation is stored in a RAM 20 for storing operation conditions is discriminated. When the operation is stored, whether or not the time passes away for three sec after setting is discriminated, the working of the water flow sensor 13 is confirmed when the time passes away for three sec, and whether or not the water flow sensor 13 is brought to a normal OFF state is discriminated. Accordingly, the presence of abnormality is checked by the water-flow sensor checking means 18 at the time of the start of the operation of the device or at a fixed period during operation in accordance with a predetermined program, thus ensuring the safety of the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath device, and more particularly to a bath device equipped with a cleaning device for cleaning hot water, by detecting the presence or absence of hot water flowing in the circulation path of the cleaning device. The present invention relates to a safety device that prevents the hot water flow from running out and the circulating pump from being idle and the heater for keeping warm from being empty.

[0002]

2. Description of the Related Art Recently, as shown in FIG. 5, a cleaning tank 4 in which hot water 2 in a bathtub 1 is sucked from a hot water pipe 11 by a circulation pump 8 and filled with a filter 5, activated stones 6, activated carbon 7, etc. To remove dirt and hair floating in hot water, to treat with activated stone, to adsorb organic matter, and to sterilize with ozone generated by the ozone generator 10. A bath device having a cleaning device 3 for spraying the purified hot water into the bathtub 1 again by the hot water pipe 12 has become widespread.

More recently, in addition to simply purifying hot water, an electric heater 9 for keeping heat is also provided in order to keep the temperature of the hot water constantly at an appropriate temperature so that the user can comfortably take a bath for 24 hours. A jet nozzle 14 is provided at the tip of a spout tube 12 for jetting the purified hot water into the bathtub 1 to jet a jet flow so that a so-called bubble bath can be enjoyed.

In such a bath water purifying device 3, for example, the hot water 2 in the bath tub 1 may escape, or air may be sucked into the pipeline due to device damage or other reasons. There is a case where the hot water absorption capacity is lowered and the hot water stops flowing in the circulation path.

When the flow of hot water in the circulation path disappears, naturally, the circulation pump 8 runs dry and breaks,
In addition, the heater 9 for keeping heat is dry-burned, resulting in damage to the device or even a danger of fire.

Conventionally, as a safety device for preventing the occurrence of the above-mentioned accident, a water flow sensor 13 such as a pressure switch which operates by water pressure is provided in the middle of the circulation path to detect the presence or absence of hot water flow. Was there.

[0007]

However, a movable water flow sensor 1 such as a pressure switch is used to detect the presence or absence of hot water flow.
In the case of 3 detection, if there is dirt or foreign matter gets caught during long-term operation, it will not operate normally and there will be many malfunctions, and even if there is no hot water flow, this will not be detected and operation of the device will continue. On the contrary, there is a drawback that the device is stopped because the flow of hot water is stopped when the flow of hot water is actually normal.

The present invention solves the above-mentioned drawbacks of the prior art, and provides a cleaning device capable of preventing malfunctions, accurately detecting the presence or absence of hot water flow, and continuously and accurately operating the device. To aim.

[0009]

Means for Solving the Problems That is, according to the present invention, hot water in a bathtub sucked up from a hot water pipe by a circulation pump is cleaned by various cleaning means, and then ejected again from the hot water pipe into the bathtub. In the cleaning device of, a water flow sensor for detecting the presence or absence of hot water flow in the bath water circulation path,
A bath water purifying device is provided with a water flow sensor check means for checking whether or not the operation of the water flow sensor is abnormal.

[0010]

The present invention is configured as described above, and a water flow sensor for detecting the presence or absence of hot water flow is provided in the circulation path of the cleaning device.
According to a predetermined program, at the start of operation of the device or at a predetermined time during operation, it is checked by the water flow sensor check means, and in case of abnormality, immediate action is taken and the water flow sensor is constantly operating normally. The safety of is secured.

[0011]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows the configuration of the present invention as a functional block diagram. Reference numeral 15 is an operation panel for inputting operating conditions of the apparatus, and 16 is a control apparatus for controlling the overall operation of the apparatus. The control device 16 is a CPU, and in addition to the operation control means 17 for executing general operation control, the water flow sensor check control means 18 for executing the check of the water flow sensor is also included.

Reference numeral 19 is a RAM for temporarily storing data when the control device 16 executes control, and 20 is an operation panel 1.
The operating condition storage RAM that continues to store the operating conditions input from 5; 21 is a program ROM that stores the procedure of execution in the control device 16;
2 to 4, the water flow sensor check program 2 is a procedure for the water flow sensor check control means 18 to execute the check of the water flow sensor as shown in FIGS.
2 is also stored.

Therefore, the water flow sensor check means is the water flow sensor check control means 18 of the controller 16.
And a water flow sensor check program 22 in the program ROM 21.

Reference numeral 23 is a display device which displays the operating conditions input through the operation panel 15 and also the water flow sensor 13
If an abnormality is found when the water flow sensor checking means 18 checks for the presence or absence of abnormality, this abnormality is also displayed.

Next, regarding the water flow sensor check program 22 which is a procedure stored in the program ROM 21 for the water flow sensor check control means 18 to check whether or not the water flow sensor 13 is abnormal, the flow charts of FIGS. Will be explained.

As shown in FIG. 2, the presence or absence of abnormality of the water flow sensor is first checked by the A program at the start when the power is turned on, and then repeatedly checked by the B program at predetermined intervals in the operating state.

First, the program A, which is a program at the start time when the power is turned on to start the operation of the apparatus, will be described with reference to FIG.

When the power is turned on, it is determined whether or not the driving condition is stored in the RAM 20 for storing the driving condition as the first step S1. If the driving is stored, the second step is determined. As S2, it is determined whether or not 3 seconds have elapsed after the setting, and when 3 seconds have elapsed, the operation of the water flow sensor 13 is confirmed as a third step S3, and it is determined whether or not it is in a normal OFF state.

When the power is turned on and the operation is stored, it is necessary to check the water flow sensor 13 after 3 seconds, as described above, when the power is cut off and the power is immediately restored. Since there is a case where the flow of hot water in the circulation path is not stopped due to the influence of the operation before the power failure, it is necessary to wait about 3 seconds for the flow of hot water to stop before checking the operation.

On the other hand, if the operation is not memorized in the first step S1, there is no concern that hot water is flowing in the circulation path as described above, so that the third step is immediately performed without waiting for 3 seconds.
In step S3, it is determined whether the water flow sensor 13 is in the OFF state.

At the third step S3, the water flow sensor 13 is turned on before the operation is started, although it should be off.
If it is determined that the error is in the error state,
As a step, the display device 23 displays that the operation is in an error state of being inoperable.

As a third step S3, the water flow sensor 13
Is OFF and is in an operable state, and when it is determined that the water flow sensor 13 is in a normal OFF state and the error state is released in the fifth step S5, the operating condition is stored in the operating condition storage RAM 20 as the sixth step S6. It is determined whether or not is stored.

RAM for storing operating conditions in the sixth step S6
If it is determined that the operating condition is stored in 20, the operation of the apparatus is started in accordance with the stored state as the seventh step S7, while if it is determined that the operating condition is not stored, Stands by as an operable state.

Next, as described above, the water flow sensor 13
The check program B at the time of operation after performing the check at the start of operation and starting the operation of the apparatus will be described with reference to FIG.

The operating conditions of the present cleaning device are the bathing mode condition, which is the operating condition during the time when there is a bather and the ozone sterilization is stopped, and when there is no bather, ozone is jetted into the bathtub every predetermined time for sterilization. There is a sterilization mode state which is an operating condition of the time period for performing the check. The check of the water flow sensor 13 is performed in the sterilization mode state in which there is no bather and the operation is stopped, and the program is as follows.

During operation, first, the eighth step S8
As a result, it is determined whether or not the device is in an operating state, and if it is in an operating state, it is determined as a ninth step S9 whether or not the operating condition of the device is a sterilization mode state in which the water flow sensor 13 is checked.

If it is determined in the ninth step S9 that the operation is in the sterilization mode, check is performed every 5 hours in this program. Therefore, it is determined whether or not the operation in the sterilization mode is continued for 5 hours. 10th step S10
Is determined as.

If it is determined that the operation in the sterilization mode has continued for 5 hours as the 10th step S10, the first step is performed.
At 1 step S11, the circulation of the hot water is stopped, and the lapse of 3 seconds, which is the time until the hot water completely stops, is waited at the 12th step S12.

If 3 seconds have passed since the circulation of hot water was stopped, the first
As a third step S13, the operation state of the water flow sensor 13 is checked. If the water flow sensor 13 is OFF, it is in a normal state, so the operation in the sterilization mode is started again at the 15th step S15.

On the other hand, if the water flow sensor 13 is ON,
Since it is in the error state, in step S14, the apparatus is set to the automatic stop state in which the operation is automatically restarted if the error state is released, and the error is displayed on the display device 23.

If it is judged in the eighth step S8 that the water flow sensor 13 is in the stopped state, the operation state of the water flow sensor 13 is immediately checked in the 16th step S16, and if the water flow sensor 13 is ON and there is an error state. , 17th
In step S17, the operation is disabled and the error is displayed on the display device 23.

In the 16th step S16, the water flow sensor 13
When it is determined that the normal state is OFF, as the 18th step S18, the stop state determined in the 8th step S8 is automatically operated if the error state of the water flow sensor 13 is released. It is determined whether or not the automatic stop is restarted.

In the 16th step S16, the water flow sensor 13
Is determined to operate normally, so if it is determined that automatic stop is not being performed at the 18th step S18, the error is released as 20th step S20 and operation in the bathing mode is restarted, while automatic stop is performed. If it is determined that the operation is in progress, the error is released and the operation becomes possible in step S19.

[0035]

The present invention has the above-described structure and operation, and is provided with a water flow sensor for detecting the presence or absence of a water flow in the circulation path of the hot water, and for checking the operating state of the water flow sensor. In addition, by providing a water flow sensor check means consisting of a water flow sensor check program and a water flow sensor check control means, the water flow sensor is kept constantly operating normally, and this malfunction-free water flow sensor ensures that an abnormality of the device can be properly detected. It is detected and safety is secured.

[Brief description of drawings]

FIG. 1 is a functional block diagram of an embodiment,

FIG. 2 is a flow chart of Example,

FIG. 3 is a flow chart of an embodiment,

FIG. 4 is a flow chart of the embodiment,

FIG. 5 is a bath water cleaning device.

[Explanation of symbols]

 1 Bathtub 2 Hot water 3 Cleaning device 13 Water flow sensor 18 Water flow sensor check control means 12 Water flow sensor check program

Claims (1)

[Claims] Claim: What is claimed is: 1. A bathtub hot water purifying device in which hot water in a bathtub sucked up from a hot water pipe by a circulation pump is cleaned by various cleaning means and then jetted again from the hot water pipe into the bathtub. An apparatus for cleaning bathtub hot water, comprising: a water flow sensor for detecting the presence or absence of hot water flow in a circulation path; and a water flow sensor check means for checking whether or not there is an abnormality in the operation of the water flow sensor.