JPH04285223A - Residual water disposal failure diagnostic method in sanitary washing device - Google Patents

Abstract

PURPOSE:To dissolve an ill condition such as the eternal continuation of residual water disposal action and display a water saving effect by performing the failure diagnosis of equipment with safe control. CONSTITUTION:A water temperature detecting means 22 is provided in a position around a nozzle in a water discharge pipeline 17 provided with a pre- washing/residual water disposal means 21. The residual water in the pipeline is let overflow by the pre-washing/residual water disposal means 21 until the internal temperature of the water discharge pipeline 17 reaches the preset temperature. The time from the start of overflow is counted by a pre-washing time control means 23, and in case this waste hot water time exceeds the preset time, the abnormality of a device is judged, so that overflow action is interrupted by the pre-washing/residual water disposal means 21.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a control technology for a sanitary cleaning device that cleans private parts by mixing water and hot water and discharging warm water adjusted to an appropriate temperature for anal cleansing or bidet cleansing. The present invention relates to a method for diagnosing residual water in a sanitary washing device having a function of discharging residual water in a water pipe immediately before discharge.

0002

[Prior Art] Sanitary cleaning equipment for hotel facilities, etc. that has hot water cleaning functions such as anal cleaning and bidet cleaning requires control so that the hot water used for cleaning is stably maintained within a comfortable temperature range. It is. For this reason, when using this type of sanitary washing equipment, after controlling the mixing of water and hot water to a predetermined temperature, the cooled water is discharged in the pipe, and the "residual water treatment" is carried out until the discharge water temperature reaches the predetermined temperature. "operation" continues.

0003

[Problem to be solved by the invention] For this reason, if a device containing a mixing valve that mixes water and hot water malfunctions and hot water at a predetermined temperature is not produced, the above-mentioned "residual water treatment operation" continues forever. This method has the drawback of causing accidents such as discarding water and not being able to proceed to the cleaning operation.

The present invention was devised in view of the above-mentioned problems, and is intended to solve the problem of the "residual water treatment operation" continuing forever, and to perform equipment failure diagnosis by safely controlling the operation.
The purpose of this paper is to propose a fault diagnosis method for residual water treatment in sanitary cleaning equipment that exhibits water-saving effects.

[0005]

[Means for Solving the Problems] A fault diagnosis method for residual water treatment in a sanitary cleaning device according to the present invention mixes and adjusts water and hot water supplied to the device and discharges the mixture for cleaning the anus, bidet cleaning, etc. It has a hot water cleaning function, and in order to stably maintain the temperature of the discharged cleaning water within a predetermined range, the supplied hot water in the discharge pipe is discharged through the nozzle pre-cleaning pipe until the temperature of the mixed hot water reaches a constant temperature. In a sanitary cleaning device that performs a "pre-cleaning/residual water treatment operation", a water temperature detection means is provided near the nozzle in the water discharging pipe in which the pre-cleaning/residual water treatment means is provided, and the pre-cleaning/residual water treatment The residual water treatment means overflows the residual water in the piping until the temperature in the water discharge piping reaches a preset temperature, and the pre-cleaning time control means counts the time from the start of overflow, and the residual water treatment time is set in advance. If the set time is exceeded, it is determined that there is an "abnormality in the device" and the overflow operation is interrupted by the pre-cleaning/residual water treatment means.

[0006]

[Function] Therefore, when the user sits on the toilet seat and hot water at a preset temperature is obtained, the pre-washing/residual water treatment means uses the cooled water that has accumulated in the water discharge pipe as cleaning water for the nozzle. The operation of flooding is performed until the preset temperature is reached. This operation is counted by a pre-cleaning time control means, and if this count time exceeds a preset time (for example, 7 seconds), it is determined that "the device is abnormal" and the pre-cleaning/residual water treatment is performed. Pre-cleaning and
It operates to interrupt the residual water treatment operation. By interrupting the overflowing operation, the user can confirm that the device is malfunctioning and can avoid wasting hot water.

[0007]

[Embodiment] An embodiment of the fault diagnosis method for residual water treatment in a sanitary washing device according to the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 shows the configuration of a piping system of a sanitary cleaning device equipped with a functional device embodying the present invention. Reference numeral 1 designates a nozzle for private cleaning constructed in the main body A. This nozzle 1 has a structure in which it is displaced and driven by a nozzle motor 2 between a predetermined use position (anal cleaning and bidet cleaning) and a storage position, and the rear end of the nozzle 1 communicates with a discharge hole for discharging hot cleaning water. is connected to the latter stage of the electromagnetic valve 4 of the valve unit C configured in the functional part B via the check valve 3 branching from the overflow e pipe, and discharges water d into the pipe communicating with the nozzle 1.
A temperature limiter thermistor sensor 5 for monitoring temperature is provided.

The electromagnetic valve 4 is a thermovalve 6 which will be described later.
The electromagnetic valve 4 is opened until the predetermined water temperature (42°C), which is set in advance as detected by the temperature control thermistor sensor 8, is obtained. Drain remaining water from nozzle 1. The thermovalve 6 of the temperature control system constituting the electronic valve unit D of the functional section B has a temperature of the secondary side feed water communicated with the solenoid valve 4 of the valve unit C by changing the mixing ratio by the mixing motor 7 for control driving. at a preset temperature (4
2° C.), and the temperature control thermistor sensor 8 is provided in the water discharge pipe 17 on the secondary side. The thermovalve 6 of this electronic valve unit D supplies water and hot water from the external equipment of this device to the primary side, and the water supply pipe a communicates via a check valve 9 with a strainer and a pressure reducing valve 10. The hot water supply pipe b is connected via a strainer-equipped check valve 11 and a pressure reducing valve 12, and also communicates with a waste hot water solenoid valve 13 provided in the valve unit C.
A thermistor sensor 14 for controlling the waste hot water is provided in the branch pipe line between the drain and the drain.

The secondary side of the waste water electromagnetic valve 13 communicates with a waste water pipe c that communicates with the secondary side pipe of the throttle valve 15 configured in the valve unit C, and the throttle valve 15
is provided by branching the pipe line from the check valve 3 provided after the electromagnetic valve 4, and is connected to the waste water pipe c by the flow rate adjustment motor 16.
The structure is such that the flow rate of the hot cleaning water flowing through the nozzle 1 is adjusted by controlling the amount of water flowing to the side.

FIG. 2 is a block diagram showing the control system of this device that controls and drives the piping system, and the operation flowchart of the entire sanitary cleaning device shown in FIG. The timing chart shown in FIG. 4 will be described below.

That is, 20 controls the waste water solenoid valve 13 based on the temperature information from the waste water control thermistor sensor 14 to waste low temperature hot water of less than 42°C, and discard the remaining water in the hot water supply pipe. It is a wastewater treatment means for discharging water from the water pipe c, and the residual water treatment of the present invention is formed at the latter stage of the wastewater treatment means 20, and is located at the second stage of the thermovalve 6 after mixing the water supply pipe a and the hot water supply pipe b. Monitor the next water temperature. The wastewater treatment means 20 is
The control operation is started in response to a "seating signal" from a seating sensor installed near the toilet seat. Reference numeral 21 denotes a pre-cleaning/residual water treatment means 21 that opens the solenoid valve 4 for a certain period of time t1 (for example, 2 seconds) to clean the nozzle 1 after the "waste water treatment" by the waste water treatment means 20 is completed; If the temperature information from the pre-cleaning water temperature detection means 22 consisting of the control thermistor sensor 8 is less than 42°C, the pre-cleaning process is continued even after the processing time t1 has elapsed, and the pre-cleaning/residual water treatment is continued. The time t2 from the ON driving of the means 21 is counted by the pre-cleaning time control means 23. When this cleaning time t2 exceeds a preset time (for example, 7 seconds), it is determined that there is an "device abnormality" and a pulse signal is generated, and this signal causes the pre-cleaning/residual water treatment means 21 to 4
It operates to "close" the motor. When the pre-cleaning time control means 23 finishes within the predetermined time t2, the subsequent cleaning water discharging means 24 waits for a "water discharging signal" from the cleaning signal input means 25 for "butt washing" or "bidet washing". .

[0013]

[Effects of the Invention] Since the fault diagnosis method for residual water treatment in a sanitary washing device according to the present invention is constructed as described above, it is possible to set the temperature within the water discharge piping so that a comfortable water discharge temperature (for example, 42°C) can be obtained. For equipment that performs a ``drainage operation'' that discharges hot water that has stagnated and cooled, if the ``drainage time'' exceeds a preset time, it will be determined that ``the equipment is abnormal'' and the ``drainage operation'' will stop. This eliminates the problem of water waste continuing forever. However, by stopping the water discharging operation midway, it becomes possible to perform a failure diagnosis of the device, and water saving can be expected. Therefore, the effects of implementing the present invention are extremely large.

[Brief explanation of the drawing]

FIG. 1 is an apparatus piping diagram showing a configuration for realizing a fault 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 method of controlling the device.

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

[Explanation of symbols]

A Main body part B Functional part C Valve unit D Electronic valve unit 1 Nozzle 2 Nozzle motor 3 Check valve 4 Solenoid valve 5 Thermistor sensor for temperature limiter 6 Thermo valve 7 Mixing motor 8 Thermistor sensor for temperature control 9, 11 Check valve 10, 12 Pressure reducing valve 13 Solenoid valve for waste water 14 Thermistor sensor for waste water control 15 Throttle valve 16 Flow rate adjustment 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 discharging means 25 Cleaning signal input means a Water supply piping b Hot water supply piping c Water waste piping d Water discharge e Overflow

Claims (1)

[Claims] [Claim 1] To mix and adjust the water and hot water supplied to the device and discharge the mixture, to have hot water cleaning functions such as anal cleaning and bidet cleaning, and to stably maintain the temperature of the discharged cleaning water within a predetermined range. In a sanitary cleaning device configured to perform a "pre-washing/residual water treatment operation" in which hot water supplied in the water discharge pipe is discharged through the nozzle pre-cleaning pipe until the temperature of the mixed hot water reaches a constant temperature, A water temperature detection means is provided in the vicinity of the nozzle in the water discharge pipe provided with the pre-cleaning/residual water treatment means, and
The pre-cleaning/residual water treatment means overflows the remaining water in the pipe until the temperature inside the water discharge pipe reaches a preset temperature, and the pre-cleaning time control means counts the time from the start of overflow, A fault diagnosis method for residual water treatment in a sanitary cleaning device, characterized in that if the time exceeds a preset time, it is determined that there is an "device abnormality" and the overflow operation is interrupted by the pre-cleaning/residual water treatment means. .