TWI552708B - Induction type handpiece - Google Patents

Description

Induction hand dryer

The invention relates to an inductive hand-drying device, in particular to an inductive hand-drying device in which the sensing area of the sensing unit covers the air outlet.

With the improvement of humanistic quality, the hygiene details in daily life are increasingly valued, and the most prominent places can be seen from public bathroom places. In order to allow the user to quickly remove the water remaining in the hand after washing the hands, the paper towel which is used for hand rubbing is generally provided in the public bathing place, but the paper towel can only be discarded once, which is not suitable for people today. For environmental protection requirements. Therefore, the dryers are gradually replaced by paper towels and are widely installed in public bath places.

With the development of infrared sensors, dryers have been developed with infrared sensors to sense the user's hand-driven technology. For example, the sanitary dehumidification hand dryer system of the Republic of China Patent No. I326207 includes a hand dryer, a dehumidification device and a temperature control device. The hand dryer comprises a hollow outer casing, a heater, an air inlet fan and an air outlet fan. The dehumidification device comprises a first thermoelectric module and a second thermoelectric module. The temperature control device is disposed on the hollow casing and provides power to the hand dryer and the dehumidification device, and performs drying and dehumidification control on the environment. The temperature control device comprises a control circuit board, an infrared sensor, a power switch button, a dehumidification start button and a forced stop button. When the hand reaches below the air outlet, the infrared sensor generates an induction to activate the air inlet fan and the air outlet fan to operate rapidly. At this time, the hot air existing in the air supply passage is pumped out of the air outlet to obtain Drying purpose. Another example is the automatic soap dispenser of U.S. Patent No. 5,186,360. In contrast to the hand dryer system, the automatic soap dispenser and hand dryer system includes a housing having an automatic soap dispenser disposed above the housing and an automatic hand dryer disposed beneath the housing. The infrared sensor is disposed under the housing, and the infrared sensor is disposed on a vertical wall surface of the front of the housing, and an air outlet of the automatic hand dryer is disposed at an angle relative to the infrared sensor, and the infrared sensor can detect The user's hand is measured and the hand dryer is automatically output to the hand dryer.

The above-described bathroom dehumidifying and drying hand system and automatic soap dispenser and hand dryer system have disclosed the hand dryer equipped with an infrared sensor, however, the infrared sensor has a separation distance with respect to the air outlet of the hand dryer. When the user intuitively places the hand near the air outlet, the infrared sensor is liable to cause the infrared sensor to not sense the user's hand due to the separation distance, and thus the dryer cannot be driven to provide the hand airflow. In addition, the user's hand must move back and forth around the air outlet to sense the infrared sensor, which is extremely inconvenient to use.

The main object of the present invention is to overcome the problem that conventional inductive hand dryers cannot effectively sense the user's hand to provide hand dryer airflow.

To achieve the above object, the present invention provides an inductive hand dryer comprising a wind flow generating device, a guiding passage and a sensing unit. The airflow generating device produces a hand dryer flow. The guiding passage includes a connecting portion that communicates with the airflow generating device to obtain the hand airflow, and an air outlet portion that communicates with the connecting portion and guides the hand airflow output, the air outlet portion includes an air outlet, and the air outlet portion surrounds the air outlet The air outlet forms a housing with an internal accommodating space. The sensing unit is disposed in the internal accommodating space of the air outlet portion and electrically connected to the airflow generating device to determine whether the airflow generating device generates the hand airflow, and the sensing unit includes a sensing region covering at least the air outlet.

In an embodiment of the invention, the airflow generating device includes a blower that produces the hand airflow.

According to an embodiment of the invention, the internal accommodating space includes a mounting portion, and the sensing unit includes a conductive wire fixed to the mounting portion and fixed along the inner wall surface of the guiding passage and connected to the airflow generating device.

According to an embodiment of the invention, the sensing unit is disposed in the mounting portion, and the internal receiving space includes an air inlet portion between the mounting portion and the air outlet and connected to the connecting portion.

In an embodiment of the invention, the sensing unit includes an inductor for detecting a thermal radiation to generate an inductive signal, and a control for electrically connecting the wind flow generating device and the inductor to the wind generating device driven by the inductive signal. Circuit.

In an embodiment of the invention, the inductor is an infrared sensor.

In an embodiment of the invention, the guiding channel includes a nozzle disposed to the air outlet.

With the above structure of the present invention, it has the following features as compared with the conventional structure:

1. The inductive hand dryer of the present invention is disposed in the guiding channel by the sensing unit, so that the sensing unit includes a sensing area covering at least the air outlet. However, the conventional inductive hand dryer has a distance between the air outlet and the infrared sensor, so that the infrared sensor cannot effectively sense the user's hand and drive the hand dryer to provide the hand airflow, and must be reciprocated near the air outlet. Move to sense the infrared sensor. Therefore, the inductive hand dryer of the present invention can solve the problem that the infrared sensor cannot be effectively sensed to drive the hand dryer.

2. The inductive hand dryer of the present invention can guide the hand airflow by using the connecting portion of the guiding passage and the air outlet portion, so that the air outlet of the hand airflow is away from the airflow generating device of the inductive hand dryer. Furthermore, the guiding channel of the inductive hand dryer can be set on One of the sinks is on the countertop, so that the user can dry the hand directly to the sink after washing the hand.

1‧‧‧Inductive hand dryer

11‧‧‧Airflow generating device

111‧‧‧Blowers

12‧‧‧ Guide channel

121‧‧‧Connecting Department

122‧‧‧Outlet Department

123‧‧‧Nozzles

124‧‧‧air outlet

125‧‧‧shell

126‧‧‧Internal accommodation space

127‧‧‧Intake Department

13‧‧‧Sensor unit

131‧‧‧ sensor

132‧‧‧Control circuit

133‧‧‧Electrical wire

14‧‧‧Installation Department

141‧‧‧ accommodating holes

142‧‧‧ accommodating slots

143‧‧‧ fixed department

2‧‧‧Washing table

21‧‧‧ countertop

A‧‧‧ Sensing area

Figure 1 is a schematic view showing the structure of the inductive hand dryer of the present invention.

2 is a partial cross-sectional view showing the structure of the inductive hand dryer of the present invention.

3 is a schematic structural view of a sensing unit and a mounting portion of the inductive hand dryer according to the present invention.

4 is a schematic view showing an embodiment of the inductive hand dryer of the present invention.

The detailed description and technical contents of the present invention will now be described as follows:

Referring to FIG. 1 and FIG. 2, the present invention is an inductive hand dryer 1 comprising a wind flow generating device 11 and a guiding channel 12 connected to the wind generating device 11. And a sensing unit 13 disposed in the guiding channel 12 and electrically connected to the airflow generating device 11. Further, the airflow generating device 11 is configured to generate a hand airflow, the guiding channel 12 obtains the hand airflow from the windflow generating device 11 and guides the direction of the hand airflow, and the sensing unit 13 is configured to detect a The user's hand determines whether the airflow generating device 11 generates the hand airflow. Referring to FIG. 4, in the embodiment, the inductive hand dryer 1 is disposed on a hand washing station 2. The airflow generating device 11 of the inductive hand dryer 1 is disposed under the hand washing station 2, and the guiding channel 12 connected to the airflow generating device 11 can be connected from the lower surface of the hand washing station 2 to a surface 21 of the hand washing table 2. on.

Referring to FIG. 2 and FIG. 3, in the embodiment, the airflow generating device 11 includes a blower 111, which can generate a high-temperature hand-drying airflow. In addition, the guide channel 12 package The utility model comprises a connecting portion 121, an air outlet portion 122 connecting the connecting portion 121, and a nozzle 123 disposed on the air outlet portion 122 to increase the output speed of the hand airflow. The air outlet portion 122 includes an air outlet 124, a housing 125 surrounding the air outlet 124, and an inner receiving space 126 located in the housing 125. The air outlet portion 122 includes a mounting portion 14 disposed in the inner receiving space 126 for the sensing unit 13 and a portion between the mounting portion 14 and the air outlet 124 and the connecting portion 121 Connected intake 127. On the other hand, the sensing unit 13 includes a sensor 131, a control circuit 132 electrically connected to the inductor 131 and the airflow generating device 11, and a conductive connection electrically connected to the control circuit 132 and the airflow generating device 11. Wire 133. The conductive wire 133 can be electrically connected to the air flow generating device 11 along the air outlet portion 122 of the guiding channel 12 and the connecting portion 121. In detail, the conductive wire 133 is mounted and fixed to the mounting portion 14 , and the conductive wire 133 is fixed to the guiding channel 12 along the inner wall surface of the guiding channel 12 . In this embodiment, the sensor 131 is an infrared sensor that generates an inductive signal by detecting heat radiation emitted by the human body, but is not limited to this embodiment. The sensing unit 13 has a sensing area A that senses and is triggered by the user to drive the airflow generating device 11 to generate the hand airflow. The mounting portion 14 includes a receiving hole 141 for mounting the inductor 131, a receiving groove 142 for engaging the receiving hole 141 and mounting the control circuit 132, and a receiving slot 142 and fixing the receiving portion 142. A fixing portion 143 of the conductive wire 133.

In order to be able to specifically explain the operation of the present invention, the sensing unit 13 of the inductive hand dryer 1 is used to determine whether to detect the user's hand and control the activation and deactivation of the airflow generating device 11 to Output or stop the hand airflow. The sensing unit 13 is disposed in the mounting portion 14 , and the mounting portion 14 is disposed in the inner receiving space 126 opposite to the air outlet 124 , and the air inlet portion 127 is disposed in the air outlet 124 and the loading portion Between the parts 14. Therefore, even if the sensing unit 13 is installed in the air outlet portion 122 of the guiding channel 12, the mounting position of the sensing unit 13 does not affect. The delivery of the hand dryer airflow. When the user places the hand on the air outlet 124, the hand is placed in the sensing area A, and the sensor 131 detects the heat radiation emitted by the hand to generate the sensing signal. The control circuit The receiving of the sensing signal and driving the airflow generating device 11 causes the airflow generating device 11 to generate the hand airflow, and the guiding channel 12 connected to the airflow generating device 11 guides the hand airflow. The hand airflow is sent from the connecting portion 121 of the guiding channel 12 to the air outlet portion 122. Further, after the connecting portion 121 of the guiding channel 12 receives the hand airflow of the airflow generating device 11, the air outlet portion 122 is connected to the connecting portion 121 through the air inlet portion 127 connected to the connecting portion 121. The hand air flow. Then, the hand airflow flows from the internal accommodation space 126 of the air outlet portion 122 to the air outlet 124 and is output through the nozzle 123. Finally, the user can dry the hand by the hand dryer airflow.

In summary, the present invention is provided in the guiding channel by the sensing unit, so that the sensing unit includes a sensing area covering at least the air outlet, thereby eliminating the conventional inductive hand dryer from the air outlet and the infrared sensing device. There is a spacing distance that prevents the infrared sensor from effectively sensing the user's hand and then driving the hand dryer to provide hand dryer airflow, which must be moved back and forth around the air outlet to cause the infrared sensor to sense the problem.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

1‧‧‧Inductive hand dryer

11‧‧‧Airflow generating device

111‧‧‧Blowers

12‧‧‧ Guide channel

121‧‧‧Connecting Department

122‧‧‧Outlet Department

123‧‧‧Nozzles

124‧‧‧air outlet

125‧‧‧shell

126‧‧‧Internal accommodation space

127‧‧‧Intake Department

13‧‧‧Sensor unit

133‧‧‧Electrical wire

14‧‧‧Installation Department

A‧‧‧ Sensing area

Claims (6)

An inductive hand drying device comprises: a wind flow generating device for generating a hand air flow; a guiding passage comprising a connecting portion communicating with the air flow generating device to obtain the hand air flow, connecting the connecting portion and guiding The air outlet portion of the air flow output, the air outlet portion includes an air outlet, a casing surrounding the air outlet and forming an inner receiving space, and a sensing unit disposed inside the air outlet portion In the space, the internal accommodating space includes a mounting portion, and the sensing unit includes a device fixed to the mounting portion and fixed along the inner wall surface of the guiding channel to electrically connect the airflow generating device to determine the wind flow generating device. Whether the conductive wire of the hand airflow is generated, and a sensing area covering at least the air outlet. The inductive hand dryer according to claim 1, wherein the airflow generating device comprises a blower that produces the hand airflow. The inductive hand-drying device of claim 1, wherein the sensing unit is mounted on the mounting portion, and the internal receiving space includes a connecting portion between the mounting portion and the air outlet and the connecting portion Connected air intake. The inductive hand-drying device of claim 1, wherein the sensing unit comprises a sensor for detecting a heat radiation to generate an inductive signal, and an electrical connection between the air flow generating device and the sensor The inductive signal drives a control circuit of the airflow generating device. The inductive hand dryer according to claim 4, wherein the sensor is an infrared sensor. The inductive hand dryer according to claim 1, wherein the guiding passage comprises a nozzle provided to the air outlet.