JPH0421486B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of an ultra-high-speed air blowing type hand drying device.

[Conventional technology]

Conventional hand drying devices are broadly classified into two types: those that use a high-temperature blowing method with a small air volume and low wind speed, and those that use a room temperature blowing method that has a large air volume and high wind speed. In the former case, a small blower and a heater are used to blow a small amount of high-temperature air into the hand drying room, and the heat from the heater is used to dry the hands. On the other hand, in the latter case, a large blower is used to blow a large amount of high-speed airflow into the hand-drying room, and the hands are dried using the large-sized airflow and high-speed airflow.

Further, the conventional hand drying device has a structure in which the peripheral wall forming the hand drying chamber, the blower, etc. are integrated with the main casing.

[Problems to be solved by the invention] As mentioned above, in the case of a high-temperature blowing method with a small air volume and low wind speed, a small air blower is sufficient because the air volume is small, and the device itself can be made smaller, but the drying time is 40 ~
It takes a long time (50 seconds), and as the drying process progresses, your hands will gradually feel hot, and you may end up getting burned, so you may have to withdraw your hands involuntarily and leave them in the hand drying chamber until they are sufficiently dry. I couldn't do it. Furthermore, because the wind speed was slow, only the moisture on the surface of the hands was dried, so solid soapy water, hand grime, etc. remained on the surfaces of the hands, making it impossible to say that they were sufficiently clean.

On the other hand, in the case of a room temperature blowing method with a large air volume and high wind speed, the blower is large and the runner diameter is large and heavy due to the large air volume, so it takes a long time to start up, and even if the drying time after startup is quick, the actual drying time is The actual drying time was about 30 seconds, which was still insufficient. Also, since the air is blowing out at room temperature, my hands no longer feel hot, but they now feel cold, and even if I try to raise the airflow temperature, I have to install a large-capacity heater because of the large air volume, and I have to increase the power supply capacity. Either they were put away, or the blowing temperature did not rise to the appropriate temperature even when a small-capacity heater was installed. Moreover, since the blower is large, the equipment itself is also large and heavy.Furthermore, for those used in clean areas such as clean rooms, the built-in high-performance filter has a large air volume, making the equipment itself large and heavy. . For this reason, when the hand dryer is made free-standing, it occupies a large area on the floor, and when it is mounted on a wall, it is heavy and requires the hassle of reinforcing the wall.

Furthermore, in conventional hand dryers, the blower, high-performance filter, etc. are fixed inside the main body casing, making it difficult to remove them, making maintenance, formal dressing, and other operations difficult.

[Means for solving problems]

The hand drying device according to the present invention uses a commutator blower with ultra-high speed rotation and a high-performance filter to blow out a clean ultra-high-speed airflow with little dust within the power of a general commercial power source, shortening the drying time and making the device compact.・
The purpose is to reduce the price by reducing weight, simplify assembly and maintenance, and dry the surface of the hands more cleanly.

First, in the present invention, a blower is used as a commutator in order to obtain ultrahigh-speed airflow. A buffer box was provided below the discharge port of the commutator blower, and a blower box to which the blower was fixed and which surrounded the buffer box was provided outside of the buffer box. In addition, a high-performance filter is installed between the blower box and the plenum chamber that collects the airflow in one place and blows it out from the nozzle port, and these are integrated by fastening them with a one-touch clamp. The unit is structured so that it can be easily taken out.

[Effect]

Since a commutator blower is used as the blower, it is compact and can obtain ultra-high-speed airflow, shortening drying time, and since it is lightweight and has a small diameter, it has low inertia and can shorten startup time. In addition, a high-performance filter is installed between the blower box with a built-in blower and the plenum chamber, and they are integrated into one unit using a one-touch clamp, making it possible to obtain clean air in the blowout air stream, and to easily install these units. Since it can be removed at any time, it is easy to replace the high-performance filter and maintain the commutator blower.

〔Example〕

The hand drying device according to the present invention includes a buffer box 3 as shown in FIG. 1, a commutator blower 2 surrounded by a blower box 5, a high performance filter 6, and a hand drying chamber 13.
In the hand drying device constituted by the electrical equipment room 14, the airflow is sucked in from the suction grille 15 on the side surface and blown out by the commutator blower 2, and blows against the buffer box 3. Here, the airflow blown out from the commutator blower 2 absorbs thermal energy by cooling electrical components such as non-contact relays and the commutator motor in the electrical equipment room 14, resulting in an air temperature of about 45°C. Furthermore, the buffer box 3 is made by suspending a square container at the four corners below the discharge port of the commutator blower with a hanging bracket 4, and a sound absorbing material 16 is pasted on the bottom plate. If it hits the super high performance filter 6, the high performance filter 6 will be damaged or will not be able to exhibit its rated performance, so the discharge airflow is reversed to disperse the speed and slow it down. Furthermore, since the dust generated by the commutator blower 2 is struck by the buffer box 3 and is partially collected, the life of the high-performance filter 6 can be extended. And the blower box 5 surrounding these
A sound absorbing material 16 is pasted on the inside to reduce noise. The airflow coming out of the blower box 5 is uniformly flowed into the high-performance filter 6 by the airflow low resistance plate 8, and the airflow purified by the high-performance filter 6 fills the plenum chamber 7, and is passed through the blowout nozzle 11.
is accelerated and blown into the hand drying chamber 13.

As mentioned above, the blower box 5 with built-in commutator blower 2, the high-performance filter 6, and the plenum chamber 7 are connected to the one-touch clamps 9, 10 as shown in Figure 2.
The high-performance filter 6 is fixed to form one unit, and airtightness is maintained by gaskets 12 provided at the upper and lower parts of the high-performance filter 6. moreover,
The above units are integrally fixed at their upper portions to the main body casing 1, and each unit can be easily attached and detached.

〔Effect of the invention〕

The hand drying device according to the present invention uses a small commutator blower to obtain ultra-high-speed airflow, thereby blowing off dirt such as soapy water solids and dirt from hands after washing, thereby increasing the hand cleaning effect. At the same time, it was possible to shorten the drying time.

In addition, by installing a high-performance filter between the blower box and the plenum chamber and making these into a unit, it is possible to replace the high-performance filter and replace the commutator blower. Therefore, maintenance and assembly of the device are simplified, and a compact and inexpensive hand drying device can be obtained.

[Brief explanation of drawings]

FIG. 1 is a front view of a hand dryer according to the present invention, and FIG. 2 is a perspective view showing the structure of a blower box, a high-performance filter, and a plenum chamber according to the present invention. Symbols in the diagram: 1...Main body casing, 2...Commutator blower, 3...Buffer box, 4...Fishing bracket, 5...Blower box, 6...High performance filter, 7...Plenum chamber , 8...Airflow resistance plate, 9...One touch clamp body, 10...One touch clamp holder, 11...Blowout nozzle, 12...Packing, 13...Hand drying room, 14
...Electrical equipment room, 15...Suction grill, 16...Sound absorbing material.

Claims (1)

[Claims] 1. In a high-speed airflow type hand drying device, the blower box is integrated with the blower and is equipped with a buffer box that receives the airflow blown out from the blower, and the high-performance filter and plenum chamber are integrated, and each can be removed. A hand drying device characterized by being configured as a single unit.