JPH029752Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a hand washing device installed in a clean room.

(Conventional technology and its problems) Conventionally, sanitary facilities such as large urinals and wash basins were not installed in clean rooms to prevent the infiltration of bacteria and other fine dust. The workers change their clothes and go in and out of the room each time, which is not only troublesome, but also poses a risk of dirt and dust getting in when they go in and out.

Therefore, it has been desired to install sanitary equipment in the room that allows workers to automatically wash, hand wash, and dry items without touching anything.

However, as shown in FIG. 10, in conventional hand washing devices, the sensing part 104 is provided around the periphery of the hand insertion opening in order to improve sensing accuracy, so it is often the case that the hand is inserted into the sensing area by mistake, and the purpose of use is lost. Even without it, it often malfunctioned.

Therefore, it is possible to install the sensing unit 104 near the cleaning water nozzle and hot air nozzle, but if this is installed too far, it may be troublesome as cleaning and drying cannot be done unless the hand is inserted deep into the area. Otherwise, there was a problem in that the hand was inserted too far and hit the back wall of the ball part.

(Technical problem to be solved by the invention) The technical problem to be solved by the invention is to prevent malfunctions and to be able to wash and dry the sensing area of the sensor without having to insert your hand deep into the sink. It is to be located in a place.

(Technical means for achieving the technical problem) The technical means of the present invention for achieving the above-mentioned technical problem is to provide a sensing section consisting of a photoelectric sensor on the inside of the wall above the bowl of the washbasin, The projection direction of the sensing unit is tilted forward with respect to the vertical line.

(Function) When you insert your hand into the bowl of the washbasin to some extent, the sensor detects the hand and sends the sensing signal to the control unit, and the control unit sends a constant amount of cleansing water from the cleansing water nozzle. Wash your hands with water for an hour.

At the same time as the water is spouted from the water spouting nozzle, the inside of the bowl is also washed, and the dirty water from hand washing is discharged to the outside of the hand wash without remaining inside the bowl.

Then, after a predetermined period of time has passed after the washing, the drying device is activated and hot air is blown out from the hot air nozzle for a predetermined period of time to dry the hands.

(Effects of the invention) Since the present invention has the above configuration, it is possible to prevent malfunctions of the handwashing device and increase the sensing accuracy of the sensing part, so that washing can be performed without having to insert the hand all the way into the handwashing device. Can be dried.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

The hand-washing device of this embodiment has a hand-washing device _A1 installed in a unit room A as shown in FIG. Unit room A has its floor A ₂ from the inside to the side wall
A grating 26 is formed inside A ₃ and has a large number of ventilation holes on the entire floor surface, while an air filter 27 is provided on the entire ceiling wall A ₄ . By forcing the inside air to circulate with the provided circulation blower 28, clean air is constantly supplied through the air filter 27, and the atmosphere is maintained clean. The air filter 27 is made of a high-performance filter capable of collecting very fine particles of dirt and dust, and has a collection efficiency of 99.97% or more.

As shown in FIGS. 2 and 3, the wash basin 1 is supported on a mounting stand 6 outside the unit room A, and only the front opening 1a and the surrounding front wall 1b are connected to the rear wall _A5 into the unit room A. The water discharging device for hand washing, the drying device for drying hands, the exhaust device in the ball part 1c, and the ball part cleaning device,
A control unit 5 that controls the operation of each of the devices in response to a sensing signal from a sensing unit 2 that detects the hand during hand washing, and each of the devices and the control unit 5 are provided inside the handwash basin 1 or outside the unit room A. , so as not to obstruct the flow of clean air within the unit room A.

The water discharging device for hand washing is a ball part 1 in a hand washing basin 1.
c Attach the water spout nozzle 3 for handwashing downward on the upper wall surface 1d, deviating outward from the middle position in the width direction,
The nozzle 3 is connected to a water supply pipe 3b provided with a solenoid valve 3a.
The solenoid valve 3 is connected to a water supply source via the
a is electrically connected to the control section 5, and the control section 5
The solenoid valve 3a opens for a predetermined period of time to supply washing water to the hand washing water spouting nozzle 3, and the same nozzle 3 spews washing water for hand washing into the ball portion 1c.

The water spouting nozzle 3 for handwashing is inclined at a predetermined angle toward a vertical line passing through an intermediate position in the width direction of the handwashing basin 1.

The drying device is provided with a hot air blowing nozzle 4 at a position symmetrical in the width direction to the hand washing water spouting nozzle 3 on the wall surface 1d above the ball part 1c, and the nozzle 4 is connected to a hot air generator 4a via a flexible pipe 4b. At the same time, the hot air generator 4a is electrically connected to the control unit 5, and the hot air generator 4a operates for a predetermined period of time according to a command from the control unit 5 to blow hot air to the hot air blowing nozzle 4. The warm air blown from the nozzle 4 dries the hands. The hot air blowing nozzle 4 is inclined at an equal angle with the hand washing water spouting nozzle 3 toward a vertical line passing through the middle position in the width direction of the hand washing basin 1. Therefore, by inserting your hand into the middle position in the width direction of the hand wash basin 1, you can receive the washing water from the hand wash water spouting nozzle 3 and the warm air from the hot air blowing nozzle 4 without moving your hand. .

The hot air generator 4a has a blower fan 303a, an air filter 304a, and a ceramic heater 305a arranged sequentially from the upstream side in a case 302a to which an intake pipe 301a is connected, and has a small heat loss and clean air in the unit room A. It is designed to blow clean warm air so as not to contaminate the area.

The exhaust device within the ball portion 1c forms an exhaust passage 7 adjacent to the rear of the ball portion 1c, and connects this exhaust passage 7 to a forced exhaust fan 7a via an exhaust pipe 7b, and also connects the exhaust passage 7 to a forced exhaust fan 7a via an exhaust pipe 7b. is electrically connected to the control section 5, and the forced exhaust fan 7a is activated by a command from the control section 5, and when the hands are dry, by rubbing the hands together, the ball section 1 is
Dust such as hand waste that falls into the exhaust pipe 7 is sucked and discharged from the exhaust passage 7 along with warm air.

The ball part cleaning device forms an annular water passage 8 at the upper peripheral edge of the ball part 1c, connects this water passage 8 to a water supply source via a water supply pipe 8b provided with an electromagnetic valve 8a, and The valve 8a is electrically connected to the control unit 5, and the solenoid valve 8a opens in response to a command from the control unit 5 to supply cleaning water to the water passage 8, and a large number of Cleaning water flows along the inner wall of the ball portion 1c from the water flow hole 8c to clean the inside of the ball portion 1c. The washing water from the washing device is discharged to the outside of the wash basin 1 and the unit room A through the drain trap 9 and the drain pipe 10 together with the washing water from the water discharging device.

The sensing unit 2 is composed of a photoelectric sensor, and is provided at a position sandwiched between the handwashing water spouting nozzle 3 and the hot air blowing nozzle 4 on the wall surface 1d above the bowl part, that is, at an intermediate position in the width direction of the handwashing basin 1, as shown in FIG. As shown in the figure, the optical axis _l1 of the light emitting and light receiving element is directed downward and inclined forward at a predetermined angle with respect to the vertical line. The optical axis
The slope of l ₁ positions the sensing part 2 slightly further back than the opening of the washbasin 1 to prevent the sensing part 2 from malfunctioning due to the light emitted from the light emitting element or being accidentally blocked by a hand or the like. This is to enable the hand to be immediately detected when the hand is inserted into the hand wash basin 1 through the opening 1a during hand washing.

The mounting structure of the sensing section 2 is such that the sensing section 2 is inserted into the wall surface 1d above the ball section 1c through the mounting hole 1e, and the light emitting and light receiving plate 2a at the front end of the sensing section 2 is brought into contact with the outer surface of the wall surface 1d. At the same time, the mounting screw shaft 2b at the rear end is fixed to the inner surface of the wall surface 1d via a bracket 2c and a nut 2d.

The operation of each device in the handwash basin 1 is controlled by the sensing section 2.
However, in order to perform hand washing and drying for a desired time, it is necessary to manually control the operation of each device, and in this embodiment, the manual Control is performed by operating switches on the operation panel 11.

The operation panel 11 is located on the rear wall _A5 of unit room A.
A hand washing switch 11a and a drying switch 11b, which are provided at a side position of the hand washing basin 1 as shown in FIG.
A stop switch 11e, which is also a pushbutton switch, and light emitting diodes 11f, 11 that indicate whether control is automatic or manual and indicate its execution.
g is provided and electrically connected to the control section 5.

The operation of the above-mentioned hand washing basin 1 during hand washing is as shown in the time charts and flow charts of FIGS. 6 to 9.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional perspective view of the hand-washing device of the present invention installed in a unit room, Fig. 2 is a longitudinal side view of the hand-washing device, and Fig. 3 is a partially cutaway front view of the same.
Fig. 4 is an enlarged cross-sectional side view showing the mounting structure of the sensing section, Fig. 5 is an enlarged front view of the operation panel for manual control, Fig. 6 is a time chart for automatic control,
FIG. 7 is a flowchart of the same, FIG. 8 is a time chart in the case of manual control, FIG. 9 is a flowchart of the same, and FIG. 10 is a sectional view showing a conventional example of the hand washing device. In the figure, _A1 ...hand washing device, 1...hand washing basin, 2...sensing section are shown, respectively.

Claims (1)

[Scope of utility model registration request] In a hand washing device that automatically washes and dries hands in a wash basin using a sensing signal from a sensing section that senses the hands, a sensing section consisting of a photoelectric sensor is provided on the inside of the wall above the bowl of the wash basin, and the sensing section is A hand washing device whose projection direction is tilted forward with respect to the vertical line.