JPH039968B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sanitary cleaning device for cleaning the private parts of a human body sitting on a toilet seat with warm water.

Configuration of the conventional example and its problems The configuration of the conventional example will be explained with reference to FIGS. 1 and 2. FIG. 1 is a top configuration diagram of a conventional sanitary washing device, where 1 is a toilet bowl, 2 is a cistern that stores water for flushing the inside of the toilet bowl 1, 3 is a toilet seat installed on the toilet bowl 1, and 4 is a toilet bowl. A nozzle that discharges cleansing water to a private part of the human body sitting on the toilet seat 3; 5 a tank that stores the cleansing water; 6 an electric heater that heats the cleansing water in the tank 5; 7 the temperature of the cleansing water in the tank 5; 8 is a water filter submerged in the water stored in the cistern 2; 9 is a water filter that sucks water from the water filter 8 and pressure-feeds it to the tank 5; A pump 100 controls energization of the electric heater 6 in response to a signal from the sensor 7, performs closed-loop control of the cleaning water in the tank 5 to a predetermined temperature, and energizes the pump during cleaning. A control means 10 is a storage box installed at the rear of the toilet seat 3 and housing the tank 5, pump 9, control means 100, etc.

In the above conventional configuration, the cleaning water is heated to an appropriate temperature and stored before use, so the temperature of the cleaning water rarely changes suddenly during cleaning, making it safe and comfortable, as well as using a general household power source (capacity 1KW). degree)
However, while it has the feature of being able to heat the water to an appropriate temperature, it is difficult to change the stored water temperature rapidly, making it difficult for users to wash at their preferred water temperature. When this happens, subsequent users are forced to wash at a higher temperature until the hot water in the tank is replaced and reheated, often causing discomfort. It also had the disadvantage of heat radiation loss during hot water storage.

FIG. 2 is a top configuration diagram of another conventional example,
The same members as in FIG. 1 are given the same numbers. 1
1 is an electric heater that heats the cleaning water being pumped; 12
101 is an instantaneous heat exchanger that transmits the heat of the electric heater 11 to the washing water being pumped and instantaneously heats it; 101 is an instantaneous heat exchanger that energizes the pump 9 at the same time as starting energization of the electric heater 11 during washing; heat exchanger 1
The temperature of the cleaning water at the outlet of the nozzle 2 is detected by the sensor 7, and the electric heater 11 is controlled in a closed loop to maintain the temperature at an appropriate temperature and discharge the cleaning water at the appropriate temperature from the nozzle 4.

The conventional configuration described above has the advantage of being able to instantaneously vary the temperature of the cleaning water, so it can immediately respond to the user's preferred temperature, and has the advantage of almost no heat loss. There is a danger that high-temperature water will be released instantaneously, and in order to perform reliable cleaning,
Even though the amount of washing water required is approximately 1 minute, a general household power supply (capacity approximately 1KW) is not sufficient at most.
Since it can only achieve an instantaneous temperature rise of about 13℃, it has disadvantages such as cold washing water being released in the winter, and if the maximum amount of washing water is lowered for this reason, washing will not be done sufficiently. .

Purpose of the Invention The present invention solves the above-mentioned drawbacks of the conventional technology.The temperature of the washing water can be changed instantly during use, no hunting or overshoot occurs, and the washing water can be sufficiently washed even in winter using a household power source. The purpose is to provide a comfortable and safe sanitary cleaning device that provides the appropriate amount of water and temperature.

Composition of the Invention In order to achieve this object, the present invention provides automatic hot water storage temperature control means using closed-loop control, reheating the washing water using open-loop control when washing water is released during washing, and the amount of reheating. This is a combination of instantaneous reheating means that can vary the temperature.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

FIG. 3 is a top view of an embodiment of the sanitary cleaning device of the present invention, and the same members as in FIGS. 1 and 2 are given the same numbers. A tank 5 is connected to the pump 9, and then the instantaneous heat exchanger 12
After being connected to the nozzle 4. The sensor 7 as shown in FIG. 2 is not attached to the outlet of the instantaneous heat exchanger having the above configuration. 1
Reference numeral 02 denotes a control means, which includes a hot water storage temperature control means for controlling energization of the electric heater 6 according to a signal from the sensor 7 and controlling the washing water in the tank 5 in a closed loop to a low temperature of 38°C, for example, and Said pump 9
and means for energizing the tank 5 during cleaning.
Washing water at 38°C is pumped from the electric heater 1.
1 and a heater capacity variable means for controlling the capacity of the electric heater 11 of the instantaneous reheating means consisting of the instantaneous heat exchanger 12 in an open loop to raise the temperature from 0° C. to 4° C. Reference numeral 13 denotes a setting device for setting the capacity of the electric heater 11, and by varying this setting device 13, the user can vary the temperature rise due to instantaneous reheating from 0° C. to 4° C. In addition,
The capacity of the electric heater 6 is, for example, 300W.

FIG. 4 is a control circuit diagram of the control means 102 in the above embodiment. 7 is the sensor shown in Fig. 3;
It consists of a positive characteristic thermistor, and 13 is a setting device shown in FIG. 3, which consists of a variable resistor. 14 is an AC power source, 15 is a power switch, and 16 is a switch that is normally located on the A contact side and is switched to the B contact side by the user during cleaning. 17 is a hot water storage temperature control means;
18 is a power control element. When the temperature of the cleaning water in the tank 5 falls below 38°C, the resistance value 7 of the sensor 7 rapidly decreases, the trigger phase of the power control element 18 advances, and the power applied to the electric heater 6 increases. It acts to return the temperature to 38°C, and when it rises above 38°C, the temperature is reversed to 38°C.
This is to keep the temperature constant. 19 is a heater capacity variable means, and 20 is a power control element. When the resistance value of the variable resistor 13 is set to zero, the advance of the trigger phase of the power control element 20 becomes maximum, the capacity of the electric heater 11 becomes 300W, and the washing water per minute is instantaneously raised by 4°C. let Furthermore, when the resistance value of the variable resistor 13 is maximized, the advance of the trigger phase of the power control element 20 is minimized and turned OFF.
However, the temperature rise of the washing water is zero.

In the above configuration, the power switch 15 is ON and the switch 16 is ON while cleaning is not performed.
is on the a contact side, so the electric heater 11 is
OFF, and the cleaning water temperature in the tank 5 is 38°C due to the action of the hot water storage temperature control means 17.
is kept constant. When a user sitting on the toilet seat 3 switches the switch 16 to the b contact side for flushing, the electric heater 6 is turned off and at the same time the pump 9 is energized, and the flushing water is sucked from the cistern 2. At the same time, the temperature of 38°C stored in the tank 5 is pumped to the tank 5.
The washing water is pushed up and sequentially forced to the nozzle 4 via the instantaneous heat exchanger 12 and discharged into the private parts of the human body. At this time, the capacity of the electric heater 11 is determined according to the value of the variable resistor 13, and the 38°C wash water pumped from the tank 5 is further raised by 4°C from 0°C. Therefore, the temperature of the washing water can be freely set between 38°C and 42°C. At the end of cleaning, by tilting the switch 16 to the a contact side, the electricity to the electric heater 11 is turned off, the pump 9 is deenergized, and the discharge of cleaning water is stopped, and at the same time, the hot water temperature control means is turned on again. 17 operates to heat and store water absorbed into the tank 5 from the cistern 2 to 38°C. In the above configuration, hot water is stored at a stable temperature of 38℃ using closed-loop hot water temperature control, and when used, the temperature is raised up to 4℃ via an instantaneous heat exchanger with a built-in 300W electric heater with a relatively small capacity. Moreover, since the above 4°C increase can be varied by open-loop control by changing the setting device by the user, high-temperature water can be heated during use without the hunting or overshoot characteristic of closed-loop control. Furthermore, the electric heater built into the instantaneous heat exchanger only requires a small capacity of 300W, which has the ability to raise the water temperature by about 4°C to cover the desired temperature range of the user. Therefore, even if the heater capacity variable means fails during cleaning and becomes fully conductive and the cleaning water temperature rises rapidly, the temperature will only rise to a maximum of 42°C, making it extremely safe. Furthermore, since it is open-loop control, there is no temperature fluctuation, and the user can change the temperature of the washing water on the spot according to his or her preference, providing a comfortable feeling. In addition, even though the heater capacity variable means is open-loop control, the hot water that has been previously heated and kept at 38°C is reheated by closed-loop control by the hot water storage temperature control means, so it is not affected by seasonal fluctuations in water temperature. The system is designed to provide overheating all year round, effectively overcoming the shortcomings of open-loop control. Moreover, since the hot water is kept at a low temperature of 38℃ while being stored, there is little heat loss. Furthermore, in a configuration in which the electric heater 6 for heating stored hot water and the electric heater 11 for instantaneous heating are not shared but are separated, as in this embodiment, the functions of the switch 16 can be performed at the same time.
By adopting a configuration that does not turn on, the maximum electrical rating of the entire device can be lowered, making it possible to use it with a general household power supply, but if the combined capacity of both is about 1KW, then the A configuration in which the heater is always connected to the power source is also possible, which reduces the waiting time for subsequent users.

Effects of the Invention According to the sanitary cleaning device of the present invention, the following effects can be obtained.

By operating the instantaneous reheating means and the heater capacity variable means for varying the electric heater capacity of the instantaneous reheating means by open-loop control, the cleaning water stored at a low constant temperature is washed at the time of cleaning.
Because it has a configuration that raises the cleaning water temperature to the user's preference, it does not cause hunting or overshoot that is characteristic of closed-loop control, and there is no danger of high-temperature water being released during use. The built-in electric heater only needs to have a small capacity to cover the user's desired temperature, so even if the heater capacity variable means fails during cleaning and becomes fully conductive, the cleaning water will still be hot. This is an extremely safe sanitary cleaning device that takes advantage of the instantaneous feature of being able to instantly change the temperature of the washing water without causing any heat loss, while eliminating the drawback of the instantaneous method that high-temperature water may be released. We were able to achieve this. In addition, the open-loop control does not cause temperature fluctuations, and the variable heater capacity means that the temperature can be adjusted to the user's preference instantly during use, providing a comfortable feeling.

Since the cleaning water to be force-fed to the instantaneous reheating means is heated and stored at a low constant temperature by the hot water storage temperature control means that performs closed-loop control in advance, the open-loop control performed by the instantaneous reheating means It overcomes the inherent drawback of control, that the outlet temperature changes due to fluctuations in water supply temperature, and has the advantage of providing a suitable temperature all year round, regardless of seasonal fluctuations in water temperature.

[Brief explanation of the drawing]

FIG. 1 is a top configuration diagram of a conventional sanitary cleaning device, FIG. 2 is a top configuration diagram of another conventional sanitary cleaning device, and FIG. 3 is a top configuration diagram of an embodiment of the sanitary cleaning device of the present invention. FIG. 4 is a control circuit diagram in the above embodiment. 3... Toilet seat, 4... Nozzle, 5... Tank, 6
...Electric heater, 7...Sensor, 9...Pump,
11... Electric heater, 12... Instant heat exchanger, 1
3...Setter (variable resistance), 16...Switch,
17... Hot water storage temperature control means, 19... Heater capacity variable means, 102... Control means.

Claims (1)

[Scope of Claims] 1. A tank for storing cleaning water, a sensor for detecting the temperature of the cleaning water in the tank, an electric heater for heating the cleaning water in the tank, and a sensor for heating the electric heater in accordance with a signal from the sensor. a hot water storage temperature control means for controlling energization of the tank and controlling the wash water in the tank to a predetermined low temperature in a closed loop; a nozzle for discharging the wash water to the private parts of a human body sitting on a toilet seat; a pump for force-feeding the wash water to the nozzle; an instant reheating means for instantaneously reheating the wash water pumped when the pump is activated to a desired temperature by an electric heater; A sanitary cleaning device comprising heater capacity variable means for varying electric heater capacity by open loop control. 2. The electric heater that heats the cleaning water in the tank and the electric heater of the instantaneous reheating means are each configured independently, and the heater capacity variable means includes a setting device that sets the electric heater capacity of the instantaneous reheating means, and a setting device that sets the electric heater capacity of the instantaneous reheating means, and a capacity variable circuit that varies the capacity of the electric heater of the instantaneous reheating means in accordance with a signal from the instantaneous reheating means; and a switch that shuts off energization of the electric heater for heating the washing water in the tank when the electric heater of the instantaneous reheating means is energized. A sanitary cleaning device according to claim 1.