JP5881561B2 - Hand dryer with integrated wash-basin - Google Patents

Description

  The present invention relates to a wash-integrated hand dryer provided on a wash basin for drying wet hands.

  Conventionally, as this type of hand drying device, a wind blowing nozzle for drying wet hands after washing is provided at the top of the wash basin, and the blower built in the wash basin and the wind blow nozzle are connected by a blow duct. When a wind blow sensor provided near the wind blowing nozzle detects a hand, high-speed wind blows from the wind blowing nozzle to dry the hand (see, for example, Patent Document 1).

Japanese Patent No. 4128577 (see, for example, [0040] to [0047])

  In the above hand dryer, when the wind blow sensor detects a hand while water is stored in the basin, high-speed wind blows toward the water stored in the basin and the water is scattered. There was a problem that not only the user but also the surroundings were wetted.

  The present invention has been made in order to solve the above-described problems. Even if a wind blow sensor detects a hand in a state where water is stored in the washbasin without taking a complicated structure, An object of the present invention is to provide a hand-drying device with an integrated wash surface that is hygienic and easy to use.

The hand-drying apparatus with integrated wash surface according to the present invention is provided with a wash basin having a space for storing water, a water discharge port for discharging wash water provided at the top of the wash basin, and also provided at the top of the wash basin. An air nozzle that blows out high-speed air, a hand detection sensor that detects the presence or absence of a hand provided in the vicinity of the air nozzle, a blower that generates high-speed wind built in a washstand that supports the washbasin, and a blower The fan is driven based on the information from the air duct connecting the air nozzle, the electrostatic capacity sensor detecting the water accumulated in the basin by the electrostatic capacity, and the hand detection sensor and the electrostatic capacity sensor. A control circuit that controls, and the control circuit does not supply driving power to the blower even if the hand detection sensor detects a hand when the electrostatic capacity sensor detects that water has accumulated in the basin Is.

  According to the wash-integrated hand dryer according to the present invention, it is possible to obtain a hygienic and easy-to-use wash-integrated hand dryer that does not scatter water without taking a complicated structure.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is a side view of the wash-integrated type hand-drying apparatus based on Embodiment of this invention. [BRIEF DESCRIPTION OF THE DRAWINGS] It is a front view of the wash surface integrated type hand-drying apparatus based on Embodiment of this invention. It is a stored water detection processing flowchart of the wash integrated hand dryer according to the embodiment of the present invention. It is a hand detection process flow figure of the wash-basin integrated hand dryer which concerns on embodiment of this invention.

Embodiment.
FIG. 1 is a side view of a hand-drying apparatus with an integrated wash surface according to an embodiment of the present invention, and FIG. 2 is a front view of the hand-drying apparatus with an integrated wash face according to an embodiment of the present invention.
First, the structure of the hand-drying apparatus with an integrated wash surface according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2.
The hand-drying device with integrated wash-basin includes a wash basin 6 having a space for storing water, a water discharge port 7 for discharging wash water provided at the top of the wash basin, and a high-speed device provided at the top of the wash basin. An air nozzle 8 that blows air; a hand detection sensor 9 that is provided in the vicinity of the air nozzle to detect the presence or absence of a hand; and a blower 11 that generates high-speed air built in a washstand that supports the washbasin, Based on information from the blower duct 13 that connects the blower 11 and the air nozzle, the electrostatic capacity sensor that detects the water accumulated in the washbasin by electrostatic capacity, the hand detection sensor 9 and the electrostatic capacity sensor, And a control circuit 12 that supplies driving power to the blower 11.

  A basin 6 having a bowl-shaped hand-drying treatment space 4 for both hand-washing and hand-drying at the top of a box-shaped washstand 2 placed on the floor 1 and having a drain outlet 5 for discharging water on the bottom. Further, a discharge system unit 3 is provided at the upper back thereof. The discharge system unit 3 is provided with a water discharge port 7 that discharges cleaning water when washing hands, an air nozzle 8 that blows high-speed air when drying hands, and a hand detection sensor 9 that detects hands. The outlet 7 is arranged so that washing water is discharged toward the substantially bottom of the basin 6 when washing hands, and the air nozzle 8 is adapted to blow high-speed air toward the substantially bottom of the basin 6 when drying hands. The hand detection sensor 9 is disposed in the vicinity of the air nozzle 8.

  A blower unit 10 is provided below the wash basin 2, and a blower 11 that generates high-speed air and a control circuit 12 are built in the blower unit 10. The blower 11 and the air nozzle 8 are connected by a blow duct 13.

  On the side surface inside the wash basin 2, a wire-like capacitance detection electrode 14 for measuring the capacitance of the stored water in the basin 6 and the capacitance generated by the capacitance detection electrode 14 are detected, A capacitance sensor including a capacitance detection unit 15 that performs signal processing is provided. The capacitance detection electrode 14 connects the side surface of the wash basin 6 facing the inside of the wash basin 2 and the capacitance detection unit 15, and further connects the capacitance detection unit 15 and the control circuit 12. .

  In addition, although not shown in the drawing, the hand-drying device is provided with parts for alarming such as an alarm LED and parts for notifying such as an LED and a buzzer.

Next, the operation of the hand-drying apparatus with an integrated washing surface according to the embodiment of the present invention will be described.
After hand washing with the washing water discharged from the water discharge port 7, when the hand is held over the hand detection sensor 9, a hand detection signal is transmitted to the control circuit 12, and the control circuit 12 starts supplying driving power to the blower 11. If it does so, the high speed wind produced | generated with the air blower 11 will be ventilated by the ventilation duct 13, a high speed wind will blow off from the air nozzle 8, and it will begin drying of a hand. Thereafter, the moisture adhering to the hand is blown off by high-speed air and discharged from the drain pipe 16 through the drain port 5 located at the bottom of the basin 6. In addition, a shutoff valve 17 is provided in the upper part of the drainage port 5, and water is stored in the basin 6 by closing the shutoff valve 17 and closing the drainage port 5.

When most of the high-speed wind from the air nozzle 8 directly hits the hand when the hand is dried as described above, the high-speed wind greatly reduces the air speed immediately after hitting the hand, and the basin 6 It flows out toward the bottom. However, when most of the high-speed wind does not hit the hand during drying or immediately after drying, the high-speed wind flows out toward the bottom of the basin 6 without substantially reducing the air velocity. At that time, if the shut-off valve 17 is closed and water is accumulated in the wash basin 6, the high-speed air is blown against the water surface in the wash basin 6 with almost no change in the air speed. As a result, water in the basin 6 scatters and wets the user and surroundings.
Therefore, in order to avoid the above situation, whether or not water is stored in the washbasin 6 is detected in advance by a capacitance sensor including the capacitance detection electrode 14 and the capacitance detection unit 15.

FIG. 3 is a flow chart for detecting water stored in the hand-drying apparatus with integrated wash surface according to the embodiment of the present invention, and FIG. 4 is a flow chart of process for detecting hand in the hand-drying device with integrated face according to the embodiment of the present invention. It is.
Hereinafter, the stored water detection process by the electrostatic capacitance sensor of the washing-integrated hand dryer according to the embodiment of the present invention will be described with reference to FIGS. 3 and 4.

The capacitance detection unit 15 of the capacitance sensor first performs initialization such as memory clear (S101), and then detects the capacitance of the capacitance detection electrode 14 (S102). The capacitance value is averaged to remove noise (S103). This averaging process uses a moving average because the capacitance is sampled in time series, but may be a simple addition average.
Next, the detected capacitance or the value of the average processed capacitance is checked (S104), and if the value is other than a normal value (out of a predetermined range or exceeds a predetermined upper limit value) Is judged as abnormal, and the signal is transmitted to the control circuit 12. Then, the control circuit 12 issues an alarm such as lighting of the alarm LED as an abnormality process (S106), and notifies the user that an abnormality has occurred.
On the other hand, if the checked capacitance value is a normal value (within a predetermined range or less than a predetermined upper limit value), it is determined as normal and the process proceeds to water detection processing (S105).
In the water detection process, the presence or absence of water is determined from the water detection determination value and the water detection determination delay time. When water is not detected, if the operation of the blower 11 is not permitted (S107), the permission flag is turned on and the operation of the blower 11 is permitted (S108). If the hand detection sensor 9 detects a hand after this (S201), the control circuit 12 will start drive power supply to the air blower 11, and will start an operation | movement (S205, S206). Therefore, even if the hand detection sensor 9 detects a hand in a state where the operation of the blower 11 is not permitted, the control circuit 12 does not supply drive power to the blower 11 (S201 to S204).
On the other hand, if water is detected and the blower 11 operation is not permitted (S109), the permission flag is turned OFF and the blower 11 operation is prohibited (S110). At this time, if the blower 11 is in operation, the control circuit 12 stops the drive power supply to the blower 11 and stops the operation (S202 to S204). Then, as a notification process, lighting of an LED or a buzzer is performed (S111), and the user is informed that water is stored in the washbasin 6.
In the case of the abnormality process (S106), in addition to the above alarm process, a process for turning off the permission flag may be added.

As described above, even if the hand detection sensor 9 detects a hand while water is stored in the basin 6, the blower 11 is not operated. In addition, when the blower 11 started operation, water was not stored in the wash basin 6, but after that, even when trying to store water during the operation of the blower 11, Stop operation. Therefore, high-speed wind is not blown out from the air nozzle 8 in a state where water is stored in the wash basin 6, and the water in the wash basin 6 can be prevented from scattering, which is sanitary. Further, since it is possible to notify the user that the water is stored in the basin 6 by turning on an LED or sounding a buzzer or the like, the user opens the shut-off valve 17 and discharges the stored water. The hand can be dried and the feel is good.
From the above, it is possible to obtain a hygienic and easy-to-use wash-integrated hand dryer that does not scatter water in the washbasin 6 without taking a complicated structure as shown in FIGS. 1 and 2. .

  1 floor, 2 wash basin, 3 discharge system unit, 4 hand drying treatment space, 5 drainage port, 6 wash basin, 7 water discharge port, 8 air nozzle, 9 hand detection sensor, 10 blower unit, 11 blower, 12 control circuit , 13 Air duct, 14 Capacitance detection electrode, 15 Capacitance detection part, 16 Drain pipe, 17 Stop valve.

Claims (3)

A basin having a space for storing water;
A water discharge port for discharging cleaning water provided at the upper part of the basin;
An air nozzle that blows out high-speed air, also provided at the top of the basin,
A hand detection sensor provided in the vicinity of the air nozzle for detecting the presence or absence of a hand;
A blower that generates high-speed air built into a washstand that supports the washbasin;
A blower duct connecting the blower and the air nozzle;
A capacitance sensor for detecting water accumulated in the basin by capacitance;
A control circuit for controlling the driving of the blower based on information from the hand detection sensor and the capacitance sensor ;
The control circuit includes:
When it is detected by the capacitance sensor that water has accumulated in the basin,
Even if the hand detection sensor detects a hand, it does not supply driving power to the blower . The capacitance sensor is provided on a side surface inside the washstand,
An electrode for detecting capacitance in the basin;
The wash-integrated hand dryer according to claim 1, further comprising: a detection unit that processes a signal of capacitance detected by the electrode and determines the presence or absence of water in the wash basin. Has notification means such as LED and buzzer,
The control circuit includes:
When it is detected by the capacitance sensor that water has accumulated in the basin,
The notification means notifies the fact. The hand-drying apparatus with an integrated wash-basin according to claim 1 or 2 .

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