JP2811125B2 - Failure diagnosis method for residual water treatment in sanitary washing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control technique of a sanitary washing apparatus for washing a local part by mixing hot water and hot water in an anal or bidet wash and discharging hot water adjusted to an appropriate temperature. The present invention relates to a method for diagnosing failure of residual water treatment in a sanitary washing device having a function of discharging residual water in a water passage just before discharge.

[0002]

2. Description of the Related Art In a sanitary washing apparatus such as a hotel facility having a hot water washing function such as an anal washing and a bidet washing, it is necessary to control the hot water used for the washing so as to be stably maintained in a comfortable temperature range. It is. For this reason, this type of sanitary washing device discharges cooled water in a pipe after water and hot water are mixed and controlled to a predetermined temperature during use, and the “residual water treatment” is performed until the discharge hot water temperature reaches a predetermined temperature. Operation ".

[0003]

For this reason, if a device including a mixing valve for mixing water and hot water fails to generate hot water of a predetermined temperature due to some failure, the above-mentioned "residual water treatment operation" continues forever. There was a drawback in that an accident such as abandonment of the water and an inability to shift to the cleaning operation occurred.

[0004] The present invention has been made in view of the above-mentioned problems, and solves the problem that the "residual water treatment operation" continues forever.
It is an object of the present invention to propose a failure diagnosis method for residual water treatment in a sanitary washing device that exhibits a water saving effect.

[0005]

According to the present invention, there is provided a method for diagnosing residual water treatment in a sanitary washing apparatus according to the present invention. It has a hot water washing function, and discharges the hot water in the discharge pipe through the cleaning pipe before the nozzle until the temperature of the mixed hot water for maintaining the temperature of the washing water to be discharged stably within a predetermined range reaches a certain temperature. In the sanitary washing apparatus which performs the "pre-cleaning / residual water treatment operation", a water temperature detecting means is provided at a position near the nozzle in the water discharge pipe provided with the pre-cleaning / residual water treating means, The residual water in the pipe is overflowed by the residual water treatment means until the temperature in the water discharge pipe reaches a preset temperature, and the time from the start of overflow is counted by the pre-cleaning time control means, and the residual water treatment time is determined in advance. Exceed the set time If the one in which the subject matter to interrupt the flood operation by judges that the pre-cleaning and residue water treatment means "abnormality of the apparatus."

[0006]

Therefore, when the user is seated on the toilet seat and hot water of a predetermined temperature is obtained, the cooled water accumulated in the water discharge pipe by the pre-washing / remaining water treatment means is used as nozzle cleaning water. An operation of overflowing until a preset temperature is reached is performed. This operation is counted by the pre-cleaning time control means. If the counted time exceeds a preset time (e.g., 7 seconds), it is determined that the apparatus is abnormal, and the pre-cleaning time is determined. The cleaning / residual water treatment means is operated so as to interrupt the pre-cleaning / residual water treatment operation. This interruption operation of the overflowing operation allows the user to confirm that the device is out of order and to avoid wasteful hot water disposal.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a method for diagnosing failure of residual water treatment in a sanitary washing apparatus according to the present invention will be described below with reference to FIGS.

FIG. 1 shows a configuration of a piping system of a sanitary washing apparatus having a functional device for carrying out the present invention. Reference numeral 1 denotes a local washing nozzle provided in a main body A. The nozzle 1 has a structure in which it is displaced and driven to a predetermined use position (anal cleaning and bidet cleaning) and a storage position by a nozzle motor 2, and a rear end of the nozzle 1 communicating with a discharge hole for discharging cleaning hot water. Is connected to the subsequent stage of the solenoid valve 4 of the valve unit C formed in the function part B via the check valve 3 branched from the overflow e pipe, and the water discharge d is connected to the pipe communicating with the nozzle 1.
A temperature limiter thermistor sensor 5 for monitoring the temperature is provided.

The solenoid valve 4 includes a thermo valve 6 described later.
The electromagnetic valve 4 is opened until the predetermined water temperature (42 ° C.) set in advance by the temperature control thermistor sensor 8 is detected. The residual water is discharged from the nozzle 1. The thermovalve 6 of the temperature control system that constitutes the electronic valve unit D of the functional unit B has a secondary supply water temperature that communicates with the solenoid valve 4 of the valve unit C by changing the mixing ratio by the mixing motor 7 for control drive. At a preset temperature (4
The temperature is controlled to 2 ° C., and the temperature control thermistor sensor 8 is provided in the secondary water discharge pipe 17. The thermo-valve 6 of the electronic valve unit D supplies water and hot water to the primary side from the external equipment of the present apparatus. The hot water supply pipe b is connected via a strainer-equipped check valve 11 and a pressure reducing valve 12 and communicates with a hot water dispensing solenoid valve 13 provided in the valve unit C.
A thermistor sensor 14 for controlling hot water is provided in the branch line.

The secondary side of the hot water disposing solenoid valve 13 communicates with a drainage pipe c which communicates with a secondary pipe of a throttle valve 15 provided in the valve unit C. Fifteen
The check valve 3 provided at the subsequent stage of the solenoid valve 4 is provided by branching a pipe line.
The amount of water flowing to the side is controlled to adjust the flow rate of the cleaning hot water flowing through the nozzle 1.

FIG. 2 is a block diagram showing a control system of the present apparatus for controlling and driving the above-mentioned piping system. FIG. 2 is a flowchart showing the operation of the entire sanitary washing apparatus shown in FIG. This is described with reference to the timing chart shown in FIG.

That is, reference numeral 20 designates the hot water control solenoid valve 13 based on the temperature information from the hot water control thermistor sensor 14 for hot water lower than 42 ° C and hot water in the hot water supply pipe. The residual water treatment of the present invention is formed at the subsequent stage of the waste water treatment means 20 and is the same as the thermo valve 6 after mixing the water supply pipe a and the hot water supply pipe b. Monitor the downstream water temperature. The water disposal means 20 is:
The control operation is started by a “seating signal” from a seating sensor provided near the toilet seat. Reference numeral 21 denotes a pre-cleaning / residual water treatment means 21 for opening the solenoid valve 4 and cleaning the nozzle 1 for a certain time t1 (for example, 2 seconds) after the "water disposal treatment" by the water treatment means 20 is completed. If the temperature information from the pre-cleaning water temperature detecting means 22 including the control thermistor sensor 8 is lower than 42 ° C., the pre-cleaning process is continued even after the lapse of the processing time t1, and the pre-cleaning / residual water treatment is performed. The time t2 from the ON drive of the means 21 is counted by the pre-cleaning time control means 23. If the cleaning time t2 exceeds a preset time (for example, 7 seconds), it is determined that the apparatus is abnormal, and a pulse signal is generated. 4
Actuated to drive "close". When the pre-washing time control means 23 is completed within a predetermined time t2, the washing water spouting means 24 at the subsequent stage waits for a "water spouting signal" from the washing signal input means 25 of "butt washing" or "bide washing". .

[0013]

As described above, the method for diagnosing failure of residual water treatment in a sanitary washing apparatus according to the present invention is constructed as described above, so that a comfortable water discharge temperature (for example, 42 ° C.) can be obtained in the water discharge pipe. In a device that performs a `` water drainage operation '' that stops and discharges cold water, if the water drainage time exceeds a preset time, it is determined that the device is abnormal and the water drainage operation is stopped. As a result, it is possible to eliminate the case where water is continuously drained. Needless to say, it is possible to diagnose the failure of the device by stopping the drainage operation halfway, and it is possible to expect water saving, and the effect after implementing the present invention is extremely large.

[Brief description of the drawings]

FIG. 1 is an apparatus piping diagram showing a configuration for realizing a failure diagnosis method for residual water treatment in a sanitary washing apparatus according to the present invention.

FIG. 2 is an apparatus piping diagram showing a control system.

FIG. 3 is an operation flowchart showing a control method of the device.

FIG. 4 is a timing chart showing control driving of the above-described device.

[Explanation of symbols]

 A body part B function part C valve unit D electronic valve unit 1 nozzle 2 nozzle motor 3 check valve 4 solenoid valve 5 temperature limiter thermistor sensor 6 thermo valve 7 mixing motor 8 temperature control thermistor sensor 9,11 check valve 10, DESCRIPTION OF SYMBOLS 12 Pressure reducing valve 13 Electromagnetic valve for hot water disposal 14 Thermistor sensor for hot water disposal 15 Throttle valve 16 Flow control motor 17 Water discharge pipe 20 Waste water treatment means 21 Pre-wash / residual water treatment means 22 Pre-wash water temperature detection means 23 Pre-wash time control Means 24 Cleaning water spouting means 25 Cleaning signal input means a Water supply pipe b Hot water supply pipe c Waste water pipe d Water discharge e Overflow

Continued on the front page (72) Inventor Motoki Moroi 100, Maeda-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside Koito Kogyo Co., Ltd. (72) Inventor Akio Fujii 5-1-1 Kumiamihigashi, Kokura-minami-ku, Kitakyushu-shi, Fukuoka East (72) Inventor Toshihiro Fukuda 5-1-1, Kuchiamihigashi Higashi, Kokura-Minami-ku, Kitakyushu-shi, Fukuoka Pref. -200929 (JP, A) JP-A-2-204542 (JP, A) JP-A-63-272823 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E03D 9/00- 9/16

Claims (1)

(57) [Claims] 1. A method for mixing and discharging water and hot water supplied to an apparatus, having a hot water cleaning function such as anal cleaning and bidet cleaning, and for stably maintaining the temperature of the cleaning water to be discharged within a predetermined range. In a sanitary washing device configured to perform a `` pre-wash / residual water treatment operation '' of discharging hot water in a water discharge pipe through a nozzle pre-wash line until the temperature of the mixed hot water reaches a constant hot water temperature, A water temperature detecting means is provided at a position near the nozzle in the water discharge pipe provided with the pre-cleaning / residual water treatment means, and the water in the water discharge pipe is maintained by the pre-cleaning / residual water treatment means until the temperature in the water discharge pipe reaches a preset temperature. And the time from the start of the overflow is counted by the pre-cleaning time control means. If the time of the hot water exceeds a preset time, it is determined that the apparatus is abnormal, and the pre-cleaning time is determined. Overflow operation by residual water treatment means A method for diagnosing failure of residual water treatment in a sanitary washing device, which is interrupted.