SANITARY FACILITY ROOM FOR CLEAN ROOM

Abstract: This invention relates to a sanitary facility room to be in­ stalled in a computer room or a clean room found in a man­ ufacturing factory for a semiconductor element wherein the water supplying means (1) is operated by a control part (6) receiving a sensed signal from the sensing means (5) for a human body, cleaning water is supplied to the sanitary de­ vice (a) to form water films at the inner surface of the sani­ tary device (a) and to perform an automatic cleaning of the sanitary device (a).

Description: This invention relates to a sanitary facility room suitable for installation in a computer room or a clean room found in a semiconductor element manufacturing factory or the like. In a conventional clean room of this type, a sanitary facility room having some sanitary equipment such as toilet bowls and hand washing bowls or the like installed therein was not arranged in the clean room, but installed out of the clean room, so that its use was quite inconvenient. The reasons why the sanitary facility room was not mounted in the clean room consist in the facts that the splashed stain water or adhered filth during use of sanitary facility generated dusts after their dried condition, or a manual operation of the plug during washing operation caused some hand stains to be adhered to the operating part of the plug due to a relative frequent operation of the plug, and the hand stains might float in the sanitary facility room as dusts and at the same time odor or dusts in the sanitary equipment stayed in the air. Further, the reasons consist in the facts that in case of the toilet bowl, its user used a toilet paper after utilizing of the toilet bowl and in case of utilizing a hand washing bowl, the user might use a towel after its utilization, resulting in that the dusts generated from the toilet paper or towel or the like floated in the sanitary facility room and accumulated in it, and these dusts adhered to the clothes of the user and were brought into the clean room. Before summarizing the invention two prior arts are hereby acknowledged. The first is DE-A-3 226 742. It discloses prefabricated bath room units each comprising at least four surrounding walls and a floor. The units can be lifted into position during the erection of buildings., The floor of such a bathroom unit can act as the ceiling for a similar bathroom when positioned thereon. Each bath room is complete with a plumbed in bath. toilet, hand basin, heating means for the supply of hot water and an air extracting unit. The second is US-A-4 222 129 that discloses a toilet with odour extracting components. Beneath the seat is a pressure switch which when compressed by a person sitting on the seat, operates an air extractor within the toilet to withdraw air from the toilet bowl via openings spaced around the rim of the bowl. It is a first object of this invention to provide a sanitary facility room unit suitable for installation in a computor room or other clean room and in which unit there is a toilet that can be used without a need for toilet paper; and in which a user of the toilet can exercise some control over the means that replaces the conventional toilet roll. The above mentioned first object is achieved by the sanitary facility room unit and its toilet as defined in the accompanying Claim 1. The claim is divided into a two-part form, the features to be found in the first part of the claim being also present in the first prior art document mentioned above. It is a second object of the present invention to provide a sanitary facility room for a clean room in which a user can utilize the sanitary facility without touching it with his hands at all. It is a third object of the present invention to provide a sanitary facility rooom for a clean room in which a user can completely utilize the sanitary facility without using a towel even after utilization of the facility. It is a fourth object of the present invention to provide a sanitary facility room for a clean room in which odor in the toilet bowl or dusts in the hand washing bowl can be discharged. It is a fifth object of the present invention to provide a sanitary facility room for a clean room in which the sanitary facility equipment can easily be installed on site. The above-mentioned second object can be attained by means wherein a water feeding part is operated in response to a human sensing operation at a sensing part. The above-mentioned third object can be accomplished by means wherein a hand washing bowl is provided with a hot air supplying device for use in drying the hands. The above-mentioned fourth object can be attained by a means wherein the toilet bowl and the hand washing bowl are provided with an air bleeding device for discharging interior air, respectively. The above-mentioned fifth object can be accomplished by means defined in some of the accompanying dependent claims. Thus the present invention provides a sanitary facility room for a clean room in which a splashing of sewage or adhesion of filth during use of the sanitary facility is prevented and an occurrence of dusts can be prevented. Brief Description of the Drawings Other objects and features of the present invention will become apparent from the following description taken in conjunction with the attached drawings., in which: Fig.1 is a perspective view in section for showing a sanitary facility room for a clean room for illustrating one preferred embodiment of the present invention. Fig.2 is a perspective view for showing a toilet bowl. Fig.3 is a longitudinal side elevation view of Fig.2. Fig.4 is a cross sectional top plan view of Fig.2. Fig.5 is a side elevation view partly broken away for showing an enlarged sensing part. Fig.6 is an enlarged front elevation view for showing an operating part. Fig.7 is an enlarged front elevation view for showing a water force adjusting control panel. Fig.8 is a time chart for use in performing a cleaning of a toilet bowl. Fig.9 is a time chart for use in performing a local cleaning and drying operation. Fig.10 is a flow chart for use in performing a cleaning of toilet bowl, a local cleaning and a drying operation. Fig.11 is a longitudinal side elevation view for showing another preferred embodiment of a toilet bowl. Fig.12 is a cross sectional view in top plan of Fig.11. Fig.13 is a longitudinal side elevation view for showing a toilet bowl. Fig.14 is a front elevation view partly broken away. Fig.15 is a top plan view partly broken away. Fig.16 is a side elevation view partly broken away for showing an enlarged fixing structure for a sensing part. Fig.17 is a time chart for use in performing a cleaning of a toilet bowl. Fig.18 is a flow chart of performing a cleaning operation. Fig.19 is a longitudinal side elevation in section for showing another preferred embodiment of a toilet bowl. Fig.20 is a front elevation view of Fig.19. Fig.21 is a longitudinal side elevation view for showing a hand washing bowl. Fig.22 is a front elevation view of Fig.21. Fig.23 is an enlarged front elevation view for showing a control panel for use in performing a manual control. Fig.24 is a time chart for use in performing a manual control. Fig.25 is a flow chart for use in performing a manual control. Fig.26 is a time chart for use in performing a manual control. Fig.27 is a flow chart for use in performing a manual control. Figs.28 and 29 are a longitudinal side elevation in section for showing another preferred embodiment of a hand washing bowl. Fig.30 is a time chart for use in performing an automatic control. Fig.31 is a flow chart for use in performing an automatic control. Fig.32 is a time chart for use in performing a manual control. Fig.33 is a flow chart for use in performing a manual control. Detailed Description of the Preferred Embodiments In reference to Fig.1, one preferred embodiment of the present invention will be described. This figure shows a case in which a toilet bowl (a), a toilet bowl (urinal) (b) and a hand washing bowl (c) are arranged in a unit room (A). The unit room (A) is formed with an air passage (A₄) communicating with the interior of its floor (A₁), interior of a side wall (A₂) and interior of a ceiling (A₃), and a grating (A₅) having several vent holes therein is arranged over an entire floor surface, and in turn an entire ceiling wall is provided with air filters (A₆). Interior air is forcedly circulated by a circulation blower (A₇) arranged in the midway of the air passage (A₄), thereby clean and fresh air is always supplied through air filters (A₆) and the atmosphere in the room is kept clean. Each air filter (A₆) is a high grade filter which can collect dusts of ultra fine particles and its efficiency of collection is more than 99.7 %. The toilet bowl (a) is provided with a water supplying part (1) for cleaning the interior of the toilet bowl (a) as shown in Figs.2 to 4, a local cleaning device (2) and local drying devices (3) constituting a local cleaning and drying device for use in cleaning a local part of a user and thereafter drying the local part, an air bleeding device (4) for discharging odor in the toilet bowl (a) and a control part (6) for receiving a sensing signal from a sensing part (5) for sensing a human body and a signal from an operating part (7) and for controlling each of the operations of the devices. The water supplying part (1) is made such that a water passage (1a) communicating with a source of water is formed at an outer circumference of the toilet bowl (a), a water supplying pipe (1b) is connected to the water passage (1a), a solenoid valve (1c) is arranged in the midway of the water supplying pipe (1b), the solenoid valve (1c) is electrically connected to the control part (6), the solenoid valve (1c) is opened for a predetermined period of time under an instruction from the control part (6), a cleaning water is supplied to the water passage (1a) from the water supplying pipe (1b), the cleaning water is flowed along the inner wall of the toilet bowl (a) from several water flowing ports (1d) opened at the bottom wall of the water passage (1a) so as to clean the toilet bowl (a). The water supplying pipe (1b) and the solenoid valve (1c) are placed out of the unit room (A) so as not to hinder the flow of the clean air in the unit room (A) and then they are connected to the source of water. Cleaning water from the water supplying part (1) and sewage in the toilet bowl (a) are discharged out of the unit room (A) through a drain trap (1a) and a drain pipe (1f) connected to the drain trap. The local cleaning device (2) is made such that a cleaning water injection nozzle (2a) is arranged at the lower surface of a seat (a1), the nozzle (2a) is connected to the source of hot cleaning water through the water supplying pipe (2b) and the solenoid valve (2c), the solenoid valve (2c) is electrically connected to the control part (6), the solenoid valve (2c) is opened under an instruction from the control part (6), the cleaning water of desired temperature is supplied to the cleaning water injection nozzle (2a) through the water supplying pipe (2b), the nozzle (2a) injects the cleaning water toward the local part of the user so as to clean the local part. The cleaning water injection nozzle (2a) can be extended out or retracted from an opening (a2) of the seat (a1) and it is set such that its projection amount in respect to the opening (a2) is different in each of the anus cleaning and the cleaning with bidet, respectively. The water supplying pipe (2a) and the solenoid valve (2c) are out of the unit room (A) due to reasons similar to that found in case of the toilet bowl cleaning device. Local drying devices (3) are made such that hot air passages (3a) are defined within the seat (a1), the passages (3a) are connected to a hot air generating machine (3c) through air feeding pipes (3b) for guiding the passages out of the unit room (A), and the hot air generating machine (3c) is electrically connected to the control part (6). The hot air generating machine (3c) is operated under instructions from the control part (6) to feed the hot air to the hot air passages (3a), the hot air is injected toward the local part of the user from the injection ports (3d) opened at the front end walls of the passages (3a) so as to dry the local part of the user. The hot air generating machine (3c) is placed out of the unit room (A), and within the casing (32c) to which the suction pipe (31c) is connected are arranged in sequence a blower fan (33c), an air filter (34c) having a high efficiency of collection and a ceramic heater (35c) generating no oxides, and further the hot air generating machine has a less thermal loss and can supply clean hot air in such a way as the air does not pollute the interior of the unit room (A). An air bleeding device (4) is made such that an air bleeding passage (4a) is defined at an outer circumference of the seat (al), the bleeding passage (4a) is communicated with the forced discharging fan (4c) through discharging pipes (4b) for guiding the passages out of the unit room (A), the bleeding fan (4c) is electrically connected to the control part (6), the forced discharging fan (4c) is operated under the instructions from the control part (6), odor in the toilet bowl (a) is suctioned from the suction port (4d) opened to the bottom wall of the discharging passage (4a) and then discharged out of the unit room (A). A sensing part (5) is composed of a photoelectric sensor which is fixed at the rear upper position of the toilet bowl (a) at the rear wall (A₈) of the unit room (A) and is electrically connected to the control part (6). The sensor detects a human body during a use of the toilet bowl, sends a sensed signal to the control part (6) and verifies the control part (6) that a beginning of the use of the toilet bowl is found. The sensing part (5) is made such that as shown in Fig.5 a light emitting and receiving element (5a) is inclined forwardly and downwardly, a sensing area is restricted near the toilet bowl (a) and an erroneous operation is prevented in such a case as, for example, other than the use of toilet bowl, i.e. a man merely passes by in front of the toilet bowl (a), it may not detect the human body. The operating part (7) is used for making a manual change-over operation between the local cleaning device (2) and the local drying devices (3), wherein as shown in Fig.6, a photoelectri sensor (7a) is assembled in the operating panel (7b) and arranged at the side upper position of the toilet bowl (a) at the side wall (A₂) of the unit room (A). The operating part is electrically connected to the control part (6) and the photoelectrical sensor (7a) detects the hands of the user during a change-over operation and sends the sensed signal to the control part (6). That is, every time the user places his hands in front of the photoelectrical sensor (7a), operations of the local cleaning device (2) and the local drying devices (3) are changed over among a local cleaning, cleaning with bidet, drying and stop. Operation of the operating part (7) is allowed only when the sensing part (5) is operated, operation other than use of toilet bowl sensed by the sensing part (5) is prohibited and the cleaning water is prevented from accidentally being injected at the cleaning water injection nozzle (2a) in the local cleaning device (2) other than an occasion of use of the toilet bowl and further from being stained in the unit room (A). Receiving of a signal sent from the operating part (7) to the control part (6) is cancelled in case that a signal output time is in a desired period of time, e.g. less than 0.5 second, subsequent signals are also cancelled in case that output interval of signals is less than a desired period of time, e.g. less than 1 second, and operations of the local cleaning device (2) and the local drying device (3) are not unnecessarily changed over. The operating panel (7b) is provided with a display for indicating operating conditions of presence or absence of input of power supply and ranging from the cleaning to the stop and with light emitting diodes (7c) near the display for indicating the operations. At a position near the operating panel (7b) is arranged a water force adjusting operating panel (8) for use in adjusting the water force from the cleaning water injection nozzle (2a) in the local cleaning device (2). The operating panel (8) is provided with the water force adjusting switches (8a) and (8b) as shown in Fig.7. The switches (8a) and (8b) are a so-called manual touch switch. These switches are relatively less frequently used and only a part of the finger tip is contacted with the switches, so a slight adhesion of hand stain may not generate any troubles at all. Operations of the toilet bowl (a) during its use described above are performed in reference to the time chart and the flow chart as shown in Figs.8 and 10. That is, the user sits on the seat (a1), the sensing part (5) detects the human body and the sensed signal is sent to the control part (6). This sensed signal is cancelled within a desired time, e.g. within three seconds and useless operation of the water supplying part (1), local cleaning device (2) and the local drying devices (3) are prevented. When the sensed signal is fed to the control part (6) more than three seconds, the solenoid valve (1c) of the water supplying part (1) is opened and a preparatory cleaning of the toilet bowl (a) is carried out and at the same time the power supply for the operating part (7) is turned on. Further, when the sensing part (5) detects the human body and at the same time the forced discharging fan (4c) for the air bleeding device (4) is operated and the discharging or bleeding of odor is started under a suction at the suction port (4d). The reason why the preparatory cleaning is performed consists in the fact that water film is formed at the inner wall surface of the toilet bowl (a) in advance and the stains after use of the toilet bowl may easily be removed. And the bleeding operation is continued during the use of toilet bowl in such a way as odor can be discharged without leaving it as well as for a desired period of time, for example, 15 seconds after the user moved away from the toilet bowl upon completion of the use of the toilet bowl, cleaning of the local part and drying of the local part and even after the output of the sensed signal of the sensing part (5) is stopped and after the output of the sensed signal is stopped. Upon completion of use of the toilet bowl, the user sets his hands in front of the photoelectrical sensor (7a) at the operating part (7) to cause the sensor (7a) to detect the hands, thereby the local cleaning device (2) starts to operate with the output of the first sensed signal and the cleaning of the local part is carried out with the cleaning water injected from the cleaning water injection nozzle (2a). After completion of the local cleaning operation, a second sensing signal is outputted at the photoelectrical sensor (7a) at the operating part (7) again with a manual operation and a cleaning with bidet can be carried out. After washing with bidet or in case that the cleaning with bidet is not required, a third sensing signal is subsequently outputted at the photoelectrical sensor (7a) of the operating part (7), thereby the local drying devices (3) start to operate, hot air is blown from the blowing ports (3d) and then the local part is dried. A ceramic heater (35c) in the local drying devices (3) is started to heat when the sensing signal of the sensing part (5a) is outputted, and a hot air is fed instantly by a blower fan (33c) when the drying operation is started. A fourth sensing signal is outputted at the photoelectrical sensor (7a) of the operating part (7), thereby operation of the local drying devices (3) is stopped and the light emitting diode (7c) for displaying a stopped condition in the operating panel (7b) is illuminated for about one second. Further, upon completion of cleaning after use of the toilet bowl and drying of it in such a manner as described above, when the user moves away from the toilet bowl (a), an input from the sensing part (5) to the control part (6) is stopped and the power supply for the operating part (7) is turned off and at the same time the solenoid valve (1c) of the water supplying part (1) is opened again for a desired period of time under instructions from the control part (6) with a desired interval, for example, 2 seconds after the input of the signal is stopped, thus a major cleaning of the toilet bowl is carried out and the sewage is discharged out of the toilet bowl (a). After the input of the sensed signal from the sensing part (5) is stopped and after a desired period of time, for example, 15 seconds is elapsed, operation of the bleeding device is stopped and all the operations are also stopped. In this way, under a condition in which all the operations are stopped, that is, at the time other than using of the toilet bowl, the power supply for the operating part (7) is kept turned off, so that the operating part (7) does not detect the human body so long as the sensing part (5) does not output any sensing signals, and it does not produce any outputs and thus it is possible to prevent any erroneous operations of the local cleaning device (2) and the local drying devices (3). The local cleaning device (2) and the local drying devices (3) continue their operations within a desired period of time set by the control part (6) until the operating part (7) produces a new sensed signal, and stops automatically after the desired period of time is elapsed. The set time is set to, for example, 5 minutes in case of performing the local cleaning and the cleaning with bidet, and it is set to 10 minutes for example in case of performing the local drying operation. After the set time is elapsed, an alarm device will be operated after the local cleaning device (2) and the local drying devices (3) are stopped and will generate an alarm. Figs.11 and 12 illustrate another preferred embodiment of a toilet bowl (a), wherein fixing frames (9) are integrally assembled and formed at the rear part of the toilet bowl (a). Within the fixing frames (9) are fixed and arranged the water supplying part (1), local cleaning device (2), local drying devices (3), functioning part of the discharging device (4) and the control part (6). Cover panels (10) are fixed between the fixing frames (9), thereby covers the functioning part of each of the devices and the control part (6) so as to make a unified assembly. The fixing frames (9) are assembled in a box-like form higher than the toilet bowl (a) and the seat (a1), a sensing part (5) is fixed to the cover panel (10) covering the front surface and at the same time a cord (6a) pulled out of the control part (6) can be connected to a power supply cord (6b) arranged out of the cover panel (10). The functioning part of the water supplying part (1) corresponds to the water supplying pipe (1b) and the solenoid valve (1c), the base end of the water supplying part (1b) is passed through the cover panel (10) and projected outward and further can be connected to a main water supplying pipe (1h) through a connector (1g). The base end of the drain pipe (1f) connected to the toilet bowl (a) is similarly passed through the cover panel (10), projected outwardly and can be connected to the drain main pipe (1j) through a connector (1i). The functioning part of the local cleaning device (2) corresponds to the water supplying pipe (2b) and the solenoid valve (2c) except the cleaning injection nozzle (2a) and to a hot water heater (2d) connected to the extremity end of the water supplying pipe (2b) as shown in the drawings, the hot water heater (2d) is mounted on and fixed to a mounting plate (2e) arranged within the fixing frames (9) and at the same time connected to the midway part of the water supplying pipe (1b) of the water supplying part (1) through a branch pipe (2f). The functioning part of the local drying devices (3) corresponds to the air blowing pipe (3b) and the hot air generating machine (3c), the base end of the suction pipe (31c) of the hot air generating machine (3c) is passed through the cover panel (10), projected outwardly and can be connected to the suction main pipe (3d). The functioning part of the bleeding device (4) corresponds to a bleeding pipe (4b) and a forced bleeding fan (4c), the base end of the bleeding pipe (4b) is passed through the cover panel (10), projected outwardly and can be connected to the main bleeding pipe (4d). Therefore, the system shown in Figs.11 and 12 can be completed on site only by connecting a power supply code (6b), main water supplying pipe (1h), drain main pipe (1j), suction main pipe (3d) and bleeding main pipe (4d). Since this system has no troublesome operation found in Figs.3 and 4 in which the functioning part of each of the devices and the control part (6) are separately arranged and thereafter they must be connected to each other, resulting in that their mounting work is quite simple and convenient. Then, a toilet bowl (urinal) (b) will be described as follows. As shown in Figs.13 to 15, the toilet bowl (b) is provided with a water supplying part (11) for cleaning the interior of the toilet bowl (b) and a control part (13) for receiving a sensed signal from a sensing part (12) sensing the human body and for controlling the operation of the water supplying part (11). The water supplying part (11) has a water passage (11a) along an entire circumference of the opening (b1), the water passage (11a) is connected to a water supplying source through the water supplying pipe (11b) extending out of the unit room (A), a solenoid valve (11c) is arranged in the water supplying pipe (11b), the solenoid valve (11c) is electrically connected to the control part (13), the solenoid valve (11c) is opened under instructions from the control part (13), the cleaning water is supplied from the water supplying pipe (11b) to the water passage (11a). The cleaning water is flowed from several water flowing holes (11d) opened at the bottom wall of the water passage (11a) along the inner wall of the toilet bowl (b) so as to clean the interior of the toilet bowl (b). The cleaning water and sewage from the water supplying part (11) are discharged out of the unit room (A) from the toilet bowl (b) through a drain trap (11e) and a drain pipe (11f). The sensing part (12) is comprised of a photoelectric sensor, detects a human body standing in front of the toilet bowl (b) in case of using the toilet bowl, sends the sensed signal to the control part (13), causes the control part (13) to acknowledge the starting of use of the toilet bowl, and the sensing part is fixed in flush with the upper front wall (b2) of the toilet bowl (b) in such a way as it may not hinder the flow of clean air within the unit room (A). A fixing structure for the sensing part (12) is constructed as shown in Fig.16, wherein the sensing part (12) is inserted and fixed to a front wall (b2) of the toilet bowl (b) through a fixing hole (b3), a front end flange (12a) of the sensing part (12) is abutted against an outer surface of the front wall (b2) and in turn a fixing threaded shaft (12b) at the rear end is fixed to the inner surface of the front wall (b2) through bracket (12c) and nut (12d). Operation of the toilet bowl (b) during sue of the toilet bowl (b) as described above is performed in reference to the time chart and the flow chart shown in Figs.17 and 18. That is, when the user stands in front of the toilet bowl (b), the sensing part (12) detects the human body and sends the sensed signal to the control part (13). This sensed signal will be cancelled in case that the output has a desired period of time, for example, within three seconds, and a useless operation of the water supplying part (11) will be prevented. When the sensed signal is inputted to the control part (13) more than three seconds, the solenoid valve (11c) of the water supplying part (11) will be opened under the instructions from the control part (13) and then the cleaning of the toilet bowl (b) will be started before using of the toilet bowl. A duration of the solenoid valve (11c) is one second, the solenoid valve (11c) is closed after the time of opening of the valve is elapsed, the valve will be opened again after six seconds and periodical opening and closing operation of the solenoid valve (11c) is repeated by several times within a period of using the toilet bowl. The valve opening time or valve closing time of the solenoid valve (11c) is counted by a timer at the control part (13) and the solenoid valve (11c) is opened or closed with a period of setting time at the control part. Thus, a proper amount of cleaning water is supplied into the toilet bowl (b) continuously from before starting of use of the toilet bowl to after completion of use of the toilet bowl under a periodical opening and closing operation of the solenoid valve (11c), a water film is always formed at the inner wall of the toilet bowl (b), the bowl is cleaned without remaining any urine component and no odor may be produced. That is, even if the user moves away from a front part of the toilet bowl (b) upon completion of use of the bowl and input of the sensing signal from the sensing part (12) to the control part (13) is stopped, the cleaning water supplied under the opening of the solenoid valve (11c) before its stoppage cleans the interior of the toilet bowl (b). Figs.19 and 20 illustrate another preferred embodiment of the toilet bowl (urinal) (b), wherein the fixing frames (14) are integrally assembled and formed at the rear part of the toilet bowl (b), the functioning part of the water supplying part (11) and the control part (13) are fixed and arranged in the fixing frames (14), cover panels (15) are fixed between the fixing frames (14) so as to cover the functioning part of the water supplying part (11) and the control part (13) to make a unified assembly. The fixing frames (14) are assembled to form a box-like shape slightly higher than the height of the toilet bowl (b) and a code (13a0 pulled out of the control part (13) can be connected to a power supply code (13b) arranged outside of the cover panel (15). The functioning part of the water supplying part (11) corresponds to a water supplying part (11b) and a solenoid valve (11c), a base end of the water supplying pipe (11b) is passed through the cover panel (15), projected outwardly and can be connected to a main water supplying pipe (11h) through a connector (11g). The base end of the drain pipe (11f) connected to the toilet bowl (b) is passed through the cover panel (15) in the same manner as that of the water supplying pipe (11b), projected outwardly and can be connected through a main drain pipe (11j). Therefore, the system shown in Figs.19 and 20 is completed in its work on site merely by connecting the power supply code (13a), water supplying main pipe (11h) and the drain main pipe (11j) and this system may eliminate a troublesome work such as a separate mounting of the functioning part of the water supplying part (11) and the control part (13) and then a connection of these elements as found in Figs.13 to 15, resulting in that an installing work becomes simple and a convenient work is assured. A hand washing bowl (c0 will be described. (Figure 21). The hand washing bowl (c) is supported by a mounting block (c') placed out of the unit room (A), only its front opening part (c1) and a front wall (c2) around the opening are adjacent to the interior of the unit room (A) from the rear wall (A₈). The hand washing bowl (c) is provided with a hand washing water injection device (21) constituting a water supplying part, a bowl cleaning device (22), a hot air heater (23) for drying hands, air bleeding device (24) in the bowl (c) and a control part (26) for controlling an operation of each of the devices by receiving a sensed singal from a sensing part (25) for sensing the hands when the hands are washed. Each of the devices and the control part (26) are arranged within the hand cleaning bowl (c) or out of the unit room (A) so as not to prevent a flow of clean air in the unit room (A). The hand washing water injection device (21) is arranged such that the water injection nozzle (21a) is displaced from an intermediate position of a width direction outwardly on the upper wall surface (c4) of the bowl part (c3) in the hand washing bowl (c) and is fixed to face downward. The nozzle (21a) is connected to a water supplying source through the water supplying pipe (21b) having a solenoid valve (21c) therein, the solenoid valve (21c) is electrically connected to the control part (26), the solenoid valve (21c) is opened for a specified period of time under the instructions from the control part (26) to supply the cleaning water to the injection nozzle (21a) and the nozzle (21a) injects the hand washing water into the bowl (c3). The injection nozzle (21a) is inclined by a desired angle toward a vertical line passing through an intermediate position in a width direction of the hand washing bowl (c). The bowl cleaning device (22) has an annular water passage (22a) at the upper circumferential part of the bowl (c3), the water passage (22a) is connected to the water supplying source through a water supplying pipe (22b) provided with the solenoid valve (22c). The solenoid valve (22c) is electrically connected to the control part (26) , the solenoid valve (22c) is opened under instructions from the control part (26), the cleaning water is supplied to the water passage (22a), is flowed from several water flowing holes (22d) opened at the bottom wall of the water passage (22a) along the inner wall of the bowl (c3) so as to clean the interior of the bowl (c3). The cleaning water from the bowl cleaning device (22) is discharged out of the hand washing bowl (c) and unit room (A) together with the cleaning water from the hand washing water injection device through a drain trap (22e) and a drain pipe (22f). A hot air heater (23) is provided with a hot air injection nozzle (23a) at the upper wall surface (c4) of the bowl part (c3) at a position in its width direction which is symmetrical to the injection nozzle (21a). The nozzle (23a) is connected to the hot air generating machine (23c) through a flexible pipe (23b), the hot air generating machine (23c) is electrically connected to the control part (26). The hot air generating machine (23c) is operated for a desired period of time under instructions from the control part (26) to send the hot air to the injection nozzle (23a) and then the hands are dried by hot air blown from the nozzle (23a). The injection nozzle (23a) is inclined at the same angle as that of the water injection nozzle (21a) toward the vertical line passing through an intermediate position in a width direction of the hand washing bowl (c). Therefore, putting the hands at the intermediate position in a width direction in the hand washing bowl (c) causes both cleaning water from the water injection nozzle (21a) and hot air from the injection nozzle (23a) to be applied to the hands without moving them. The hot air generating machine (23c) is made such that a blower fan (233c), air filter (234c) and ceramic heater (235c) are arranged in sequence from the upstream side within a casing (232c) to which a suction pipe (231c) is connected. A thermal loss is less and a clean hot air can be fed in such a way as the clean air in the unit room (A) is not polluted. The air bleeding device (24) in the bowl (c3) is placed adjacent to the rear part of the bowl (c3) to form air bleeding passage (24a), the air bleeding passage (24a) is connected to a forced air bleeding fan (24c) through an air bleeding pipe (24b) and at the same time the air bleeding fan (24c) is electrically connected to the control part (26), the forced air bleeding fan (24c) is operated for a specified period of time under instructions from the control part (26) to suck dusts such as effete matter of hands dropped into the bowl (c3) under chafing of hands during drying of hands from the air bleeding passage (24a) together with hot air and then discharge them. The sensing part (23) is comprised of a photoelectric sensor which is arranged at a position in the upper wall surface (c4) of the bowl held between the water injection nozzle (21a) and the blowing nozzle (23a), that is, an intermediate position in a width direction of the hand cleaning bowl (c), and as shown in Fig.21, an optical axis ( ℓ₁ ) of light emitting and light receiving element is inclined downward and forward by a desired angle in respect to a vertical line. The inclination of the optical axis ( ℓ₁ ) is made in order to enable the sensing part (25) to positioned slightly deeper from the opening (c5) of the hand washing bowl (c), to prevent any erroneous operation of the sensing part (25) caused by an accidental cutting of the light beam emitted from the light emitting element with hands and to enable a rapid sensing of hands to be performed when the hands are put into the hand washing bowl (c) through the opening (c5) in case of washing hands. Operation of each of the devices in the hand washing bowl (c) is automatically controlled by the control part (26) received the sensed signal from the sensing part (25). In order to perform both hand washing and drying operations for a desired period of time, it is necessary to make a manual control over the operation of each of the devices and so in the preferred embodiment of the present invention, the manual control is performed by a switch operation at the operating panel (27). The operating panel (27) is arranged at the side position of the hand washing bowl (c) at the rear wall (A₈) of the unit room (A). The operating panel: (27) is provided with a hand washing switch (27a) and a drying switch (27b) of push-button type, light emitting diodes (27c), (27d) indicating the input condition of the switches, as shown in Fig.23, and similarly it is provided with a stop switch (27e) of a push button type switch and with light emitting diodes (27f0, (27g) for displaying either an automatic control or a manual control and for indicating its operation, and further it is electrically connected to the control part (26). Operation of the hand washing bowl (c) during hand washing is performed in reference to the time chart and the flow chart shown in Figs.24 to 27. At first, in case of an automatic control operation, when the user puts his hands into the hand washing bowl (c), the sensing part (25) detects the hands and sends the sensed signal to the control part (26). Input of a sensing signal to the control part (26) is only first time of inputting operation and the sensed signals outputted subsequent to the first input time are prohibited from being input to the control part (26). When a sensed signal is inputted to the control part (26), the solenoid valve (21c) for the hand washing water injection device (21) is opened for a desired period of time, for example, 10 seconds, under instructions from the control part (26) and the cleaning water for washing hands is injected from the water injection nozzle (21a). The solenoid valve (22c) for the bowl cleaning device (22) is opened in simultaneous with the injection of the cleaning water from the water injection nozzle (21a) and then the cleaning in the bowl (c) is started. Time of opening of the solenoid valve (22c) is for one second, the solenoid valve (22c) is closed after this valve opening time is elapsed and then the valve is opened again after six seconds. Such a periodic opening and closing of the solenoid valve (22c) is repeated by several times within a hand washing time. Valve opening and closing time of the solenoid valve (22c) is counted by a timer at the control part (26) and the solenoid valve (22c) is opened or closed at a period of specified time at the control part (26). Thus, a proper amount of cleaning water is supplied continuously into the bowl (c3) of hand washing bowl (c) until completion of hand washing action under a periodical opening and closing operation of the solenoid valve (22c), and the sewage generated after hand washing action is discharged out of the hand washing bowl (c) and out of unit room (A) without being remained in the bowl (c). After the hand washing and cleaning of the bowl (c3) are carried out, the hot air generating device (23) and air bleeding device (24) simultaneously start their operation after a desired time, for example, 5 seconds is elapsed and then the hand drying and the air bleeding of the bowl part (c3) are carried out. The reason why a delay time is made between a starting of operation of the hot air heater (23) and the air bleeding device (24) and a stoppage of operation of the hand washing water injection device (21) and the bowl cleaning device (22) consists in that the cleaning water or sewage remained in the bowl part (c3) is prevented from being splashed out of the bowl part (c3) with hot air produced from the hot air heater (23) and the air bleeding device may not badly affected under a suction of the cleaning water into the air bleeding device. The hot air heater (23) is operated such that air is heated during its passage through the ceramic heater (235c) under a rotation of the blower fan (233c) in the hot air generating machine (23c), the hot air is blown from the blowing nozzle (23a), struck against the hands to dry them. The ceramic heater (235c) is already started to heat when the sensed signal is inputted to the control part (26) and the hot air may instantly be fed by the blower fan (233c) when the drying operation is started. The air bleeding device (24) is operated such that the bowl part (c3) is suctioned through the air bleeding passage (24a) under a rotation of the forced air bleeding fan (24c), an operating time of the fan (24c) is counted by a timer at the control part (26), the fan (24c) is operated within a specified period of time at the control part (26) and then its operation is stopped after the desired delay time, for example, 5 seconds is elapsed after the operation of the hot air generating device (23) is stopped. The reason why this delay time is made consists in the fact that dusts such as waste matters produced by scrubbing of hands after drying of hands is discharged out of the bowl part (c3) without being remained in it. In case that the automatic control is changed over to a manual control, the stop pushbutton switch (27e) at the operating panel (27) is depressed and the operation performed under an automatic control is stopped and reset to its initial condition, and thereafter either the hand washing switch (27a) or the drying switch (27b) is depressed to change-over the automatic control to the manual control. Even if both the hand washing switch (27a) and the drying switch (27a) are depressed during the automatic control operation, its input is not received at the control part (26). In case that the hand washing switch (27a) is depressed, both hand washing water injection device and (21) and bowl cleaning device (22) are simultaneously started to operate in the same manner as that of the automatic control so as to perform both cleaning of hands and bowl part (c3). In order to stop the water injection of cleaning water after the hand cleaning is performed for a specified period of time, either the stop switch (27a) or the drying switch (27b) is depressed. In case that the drying switch (27b) is depressed, the hot air heater (23) and the air bleeding device (24) are started to operate with a delay of desired time in the same manner as that of the automatic control after the injection of cleaning water is stopped, a change-over from the hand washing operation to the drying operation is performed. In turn, in case that the drying switch (27b) is depressed, the hands can be dried for a desired period of time under an operation of the hot air heater (23) in the same manner as above. In order to stop the drying operation, either the stop switch (27e) or the hand washing switch (27a) is depressed, and in case of depressing of the hand washing switch (27a), the operation is changed-over to the hand cleaning operation with a delay time in the same manner as that of the automatic control. System shown in Figs.28 and 29 illustrates another preferred embodiment of the hand washing bowl (c) respectively. The system shown in Fig.28 is made such that fixing frames (28) are integrally assembled and formed from the bottom part of the hand washing bowl (c) to the upper part thereof through a rear part, and the cleaning water injection device (21), bowl cleaning device (22), hot air heater (23), the functioning part of air bleeding device (24) and the control part (26) are fixed and arranged in the fixing frames (28), and at the same time a cover panel (29) is fixed over the fixing frames (28), thereby it covers the functioning part of each of the devices and the control part to make a unified device. The fixing frames (28) are comprised of a mounting block (28a) and a frame (28b) formed in a longitudinal box-like shape and faced upwardly from the mounting block (28a), the hand washing bowl (c) is mounted and fixed on the mounting block (28a), a front opening (c1) of the hand washing bowl (c) and a front wall (c2) around the opening are projected out of the cover panel (29) and at the same time a cord (26a) pulled out of the control part (26) can be connected to a power supply cord (26b) arranged outside of the cover panel (26b). The functioning part of the cleaning water injection device (21) corresponds to the water supplying pipe (21b) and the solenoid valve (21c) except the water injection nozzle (21a), a base end of the water supplying pipe (21b) is passed through the cover panel (29), projected outwardly and can be connected to the main water supplying pipe (21e) through a connector (21d). The functioning part of the bowl cleaning device (22) corresponds to the water supplying pipe (22b) and the solenoid valve (22c), and a base end of the water supplying pipe (22b) is connected to the midway part of the water supplying pipe (21b) of the toilet cleaning water injection device (21) through a branch pipe (22b), thereby cleaning water is supplied. A base end of the drain pipe (22f) to be connected to the hand washing bowl (c) is also passed through the cover panel (29) in the same manner as that of the water supplying pipe (21b), projected outwardly and can be connected to the main drain pipe (22i) through a connector (22h). The functioning part of the hot air heater (23) corresponds to a flexible pipe (23b) and a hot air generating machine (23c) except a blowing nozzle (23a), and the hot air generating machine (23c) is mounted and fixed on a mounting plate (32d) arranged in the fixing frames (28). The functioning part of the air bleeding device (24) corresponds to a air bleeding pipe (24b) and a forced air bleeding fan (24c), a base end of the air bleeding pipe (24b) is passed through the cover panel (29), projected outwardly and can be connected to the main air bleeding pipe (24d). Therefore, system shown in Fig.28 is completed in its work on site by a mere connection of a power supply code (26b), a main water supplying pipe (21e), a main drain pipe (22i) and a main air bleeding pipe (24d) and it does not require any troublesome operation in which the functioning part of each of the devices and the control part (26) are separately mounted and then they must be connected to each other as shown in Figs.21 and 22, resulting in that a mounting work becomes simple and convenient. In turn, a system shown in Fig.29 is made such that an hot air generating machine (23c) of a hot air heater (23) and an air bleeding passage (24a0 formed adjacent to the rear part of the bowl part (c3) are connected by a suction and air bleeding pipe (23e). The air fed through the suction and air bleeding pipe (23e) from within the bowl part (c3) under a rotation of the blower fan (233c) of the hot air generating machine (23c) is heated while it is passed through the ceramic heater (235c), and then the hot air is blown from the blowing nozzle (23a) to dry the hands and at the same time dusts such as waste matters generated under a scrubbing of both hands while drying operation is suctioned and then the waste matters are removed while they are passed through the air filter (234c), and they are circulated. Operation of the automatic control in case of hand washing at the hand washing bowl (c) shown in Fig.29 is carried out in reference to the time chart and the flow chart of Figs.30 and 31, wherein in case of performing a manual control, the operation is performed in reference to the time chart and the flow chart of Figs.32 and 33. Therefore, the system shown in Fig.29 can be installed more easily than that of Fig.28 due to the fact that the air bleeding device and the main air bleeding pipe are not required to have a connection on site. Further, although the present preferred embodiments show that the toilet bowls (a) and (b) and the hand washing bowl (c) are installed in the unit room (A), it is not necessarily required to install three units (a), (b) and (c) and for example, two units of toilet bowls (a) and (b) or two units of toilet bowl (b) and the hand washing bowl (c) may be installed.

Claims: A sanitary facility room unit (A) comprising; a toilet assembly including a toilet bowl (a); water supply means (1) for supplying cleaning water to the interior surface of the toilet bowl (a) to form water films on the inner surface thereof; characterized in that the sanitary facility room unit (A) is suitable for installation in a computor room or other clean room; that said sanitary facility room unit has means (A1 to A7) for maintaining a clean atmosphere in said room unit; and that said toilet bowl (a) has a local cleaning device (2) for projecting water towards the annus of a user of the toilet or for projecting water as in a bidet; a hot air generating device and associated blower means (3c) arranged to direct hot air via the toilet towards the washed parts of a user of the toilet; the toilet assembly including a sensing part (5) for detecting a human body during a use of the toilet bowl; a control part (6) adapted to control the supply of water and hot air to the toilet bowl in response to a signal from the sensing part (5) on detecting a human body; an operating part (7) permitting a change-over operation of the local cleaning device (2) and the hot air generating device (3c); the toilet assembly being such that the operating part (7) is only capable of causing said change-over to be effected if the sensing part (5) detects a human body using the toilet. A toilet assembly as claimed in Claim 1 and wherein said operating part (7) is such that it can be used to select: (a) operation of the local cleaning device (2) for directing water towards the annus of a user of the toilet; (b) operation of the local cleaning device (2) for directing water as a bidet to a user of the toilet; (c) operation of the hot air generating device; (d) to stop said operations. A toilet assembly as claimed in Claim 1 or Claim 2 and wherein said operating part (7) is a photo-electric sensor (7a) responsive to the detection of a hand of a user of the toilet to send a signal to the control part (6) to cause said change-over operation every time that a user of the toilet places a hand in front of the photo-electric sensor (7a). A toilet assembly as claimed in any one of Claims 1 to 3 and wherein said control part (6) causes the water supply part (1) to be operated for a period on the sensing part (5) detecting that a human body is using the toilet and wherein said control part (6) again causes the water supply part (1) to be operated for a period on the sensing part (5) detecting that a human body has vacated the toilet. A toilet assembly as claimed in any one of Claims 1 to 4 and comprising an air bleeding device (4) for removing odor from the toilet bowl, said control part (6) causing the air bleeding device (4) to be operated from a time when the sensing means (5) detects a human body to a predetermined time after the sensing means (5) has detected that a human body has vacated the toilet. A sanitary facility room suitable for installation in a computor room or a clean room, said sanitary facility room having therein a toilet assembly as claimed in any one of Claims 1 to 5. A sanitary facility room as claimed in Claim 6 and wherein vent holes are arranged in its floor surface and air passages (A4) communicate with the interior of the floor (A1) and the interior of a ceiling of the sanitary facility room . A sanitary facility room as claimed in Claim 7 and including a circulation blower (A7) for supplying fresh air to the sanitary facility room via filters (A6) and said passages. A sanitary facility room as claimed in any one of Claims 6 to 8 and wherein fixing frames (9) are integrally assembled and formed at a rear part of the toilet bowl (a); the water supply part (1), the air bleeding device (4), the control part (6) and the hot air generating device and associated blower means (3c) are fixed and arranged in the fixing frame (9); and a cover panel (10) is fixed over said fixing frames (9) to cover a drain device (1f) and said parts (1,6), devices (4,3c) and means (3c) arranged in the fixing frames (9). A sanitary facility room as claimed in any one of Claims 6 to 9 and including a urinal (b). A sanitary facility room as claimed in Claim 10 and wherein a water supply means (11) for the urinal is brought into operation when a sensing means (12) detects a human body at the urinal. A sanitary facility room as claimed in Claim 11 and wherein fixing frames (14) are integrally assembled and formed at the rear part of the urinal (b); said water supply means (11) and a control part (13) for the water supply means are both carried by said fixing frames (14); a panel (15) covering said water supply means (11) and said control part (13) is secured to said fixing frames (14); and the control part (13) is controlled by said sensing means (12). A sanitary facility room as claimed in any one of Claims 6 to 12 and including a hand washing bowl (c). A sanitary facility room as claimed in Claim 13 wherein a hot air heater (23) is provided for drying hands, there being hand sensing means (25) for causing operation of the hot air heater (23) after an operation of water supplying means (21). A sanitary facility room as claimed in Claim 14 and wherein there is provided an air bleeding device (24) for removing air from the handwashing bowl (c), and means are provided for operating said air bleeding device (24) simultaneously with the operation of said hot air heater (23) in response to sensing means (25) detecting hands at the washing bowl. A sanitary facility room as claimed in Claim 14 or 15 and including means (22b, 22c) for supplying cleaning water to the bowl to wash it; said means being additional to the means (21, 21c) for supplying water for hand washing; and means for shutting off the water to both of said water supply means when the hot air heater (23) is operated. A sanitary facility room as claimed in Claim 16 and wherein manually operable switches (27) are provided to control the water supply means and the hot air heater. A sanitary facility room as claimed in Claim 15 and wherein control means (26) are provided that cause the air bleeding device (24) to continue its operation for a specified period after the operation of the hot air generating device (23) is stopped. A sanitary facility room as claimed in any of Claims to 14 to 18 and wherein a filter (234c) is arranged at a discharge side of the hot air heater (23c). A sanitary facility room as claimed in any of Claims 14 to 19 and wherein fixing frames (28) are integrally assembled and formed with the washing bowl (c), and a cover panel (29) is fixed over said fixing frames (28) to cover the water supplying means (21), the hot air heater (23), the means for operating the air bleeding device (24) and a control part (26) for the hot air heater (23) and the water supplying means (21).

Inventors: IIDA, MASAMI C/O TOTO LTD., IKENAGA, TAKAO C/O TOTO LTD., KAWAMURA, SEIJIRO C/O TOTO LTD., KUSUMOTO, AKIO C/O TOTO LTD., MORITA, KOJI C/O TOTO LTD., OKADA, HIROSHI C/O TOTO LTD., SHIGEMATSU, TOSHIFUMI C/O TOTO LTD., TAKI, MASURA C/O TOTO LTD.
Applicants: TOTO LTD.
Application year: 1985
Main classification: E03D9
IPC codes: E03D5, E03D9