JPH029758Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hand dryer that allows wet hands to be placed under the air outlet and dried by warm air blown out from the air outlet.

Generally, this type of dryer uses a heater to heat the air sucked into the main body of the dryer by an air blower, and then blows out dry hot air from the air outlet for a certain period of time. It is designed so that when you put your hand out, the hot air blows out to dry your hand.

However, in conventional hand dryers, in order to dry wet hands as quickly as possible, the air sucked in from the blower is instantly heated by a heater to a temperature suitable for drying. In order to maintain this during the drying period, a heater with a large heater capacity (for example, 1KW) was required. However, using a large-capacity heater for a hand dryer is difficult in a typical household because of its contracted current (for example, 15A,
This was difficult because there was a risk of exceeding the limit (20A contract, etc.). For this reason, it is possible to lower the capacity of the heater to a certain extent and use it within the contracted current, but in this case, the temperature of the hot air is lukewarm, so it takes time to dry, and the longer the drying time, the lower the electricity consumption. This is extremely uneconomical as consumption also increases.

In view of the above points, the present invention can be used in general households within the contracted current range, and moreover, shortens the drying time by blowing hot air suitable for drying wet hands for a certain period of time, and reduces power consumption. The purpose is to provide an economical hand dryer with a small number of units.The embodiments of the present invention will be explained below using figures.1 is an outer box of the hand dryer of the present invention;
is made of a thin metal plate or heat-resistant resin, and the upper part has a blower storage chamber 2, and the lower part has the above-mentioned blower storage chamber 2.
Hot air drying chamber 3 with a double wall structure that communicates with the front lower part of the
are each provided as an integral structure. 4
is an electric blower consisting of a fan 5 and an electric motor 6,
The electric motor 6 is housed in the blower storage chamber 2 by placing the fan 5 facing above the hot air drying chamber 3 and installing the motor 6 on the floor surface 2a of the blower storage chamber 2 via the mounting legs 6a. Reference numeral 7 denotes a heating device installed in the double wall of the hot air drying chamber 3 with the inner peripheral surface exposed inside the hot air drying chamber 3. It is constituted by a heat storage body 9 formed by laminating materials having a high specific heat. 10 is a heat insulating material such as rock wool surrounding the heat storage body 9; 11
12 is a hot air outlet opened at the lower end of the hot air drying chamber 3; 13 is a power terminal; 14 is a temperature fuse; 15 is a temperature regulator.

The outer box 1 is a wall 16 near the washstand (not shown).
It is attached by means such as latching.

Next, to explain the operation, first, power terminal 1
3 is connected to an external power source and energized, the heat storage body 9 of the heating device 7 installed in the double wall of the hot air drying chamber 3
The heater 8 embedded therein generates heat to heat the heat storage body 9, and when the heat storage body 9 reaches a predetermined temperature, the temperature regulator 15 operates to cut off the current supply. From this point on, the heat storage body stores its heat for a long time without electric current. When you want to dry your wet hands after washing them, turn on the waterproof push button switch 17, and when the normally open contact Xa is closed by the relay X, the timer T starts and the electric blower 4 starts. do.
The air intake port 1 of the outer box 1 is opened by starting the electric blower 4.
The air flowing into the hot air drying chamber 3 from the air blower storage chamber 2 from 1 takes away the heat stored in the heat storage body 9 and becomes hot air, and the air flows through the hot air outlet 12 of the hot air drying chamber 3.
It is discharged from. For this reason, the hot air discharge port 12
When a wet hand is placed on the underside of the hand, moisture on the surface of the hand is forcibly dried and removed by the hot air heated by the heat storage body 9, allowing the hand to be dried. Since the hand drying time is usually about 30 to 30 seconds, the heat storage body 9 will not lose any heat within this time. This drying time can be easily set using the timer T, and when the drying time ends after drying the hands during this set time, the normally closed contact Tb of the timer T opens and the operation of the electric blower 4 is stopped. let Furthermore, when drying is completed within the set time, the user can turn off a power switch (not shown) to stop the operation of the electric blower 4 and stop discharging hot air. After drying your hands, if the temperature of the heat storage body 9 falls below the predetermined temperature, the temperature controller 1
5 is activated and the power supply to the heating heater 8 is restarted.

In addition, in the present invention, an example has been described in which the electric blower 4 is turned on and shut off using the waterproof push button switch 17, but instead of using the push button switch 17, the electric blower 4 can be started by stepping on a petal, or an infrared When the electric blower 4 is shut off manually, a photoelectric element is actuated to operate a switch and start the electric blower 4.

In addition, an opening/closing damper is attached to the hot air outlet 12, and this damper is opened manually or automatically when the hand dryer is used, and when the hand dryer is not in use, the hot air outlet 12 is closed so that the heat of the heat storage body 9 is discharged from the hot air. Natural heat radiation from the outlet 12 may be prevented.

Furthermore, the present invention can be realized even if a hot air discharge tube of a hair dryer is connected to the hot air outlet 12 and used as a hair dryer.

Further, the heat storage body 9 is provided with a heat storage body sealed with an appropriate amount of a latent heat storage material of melting such as caustic soda having a high melting point on the outer periphery, and the latent heat of melting stored when the heat storage material liquefies is utilized. The present invention also works even if the temperature of the hot air is kept constant.

As mentioned above, when drying wet hands, etc., the present invention generates hot air using the heat of a heat storage body that has been stored at a predetermined temperature. This is completely different from the conventional method which uses a large-capacity heater to generate hot air, and the present invention uses a small-capacity heater to heat the heat storage body to the required temperature in advance and then transfers the heat. It stores heat, and when drying hands, etc., the heat of the heat storage body can be used to generate hot air, so a heater with a small capacity can be used, so it is not limited to contract current in ordinary homes. This makes it possible to install a hand dryer without having to do so.
Further, since the heat storage body is always heated at the required temperature, hot air suitable for drying can be obtained from the desired stage during drying, so that the drying time can be shortened.
Furthermore, in this case, the heat storage body is heated to an appropriate temperature using a small-capacity heater, and thereafter the temperature of the heat storage body is controlled to be constant by a temperature controller. Moreover, when hot air is required, the heat storage body is In addition to utilizing the heat of the hands, the power consumption when drying hands, etc. can be significantly reduced compared to the case of using conventional large-capacity heaters, making it economical. Hand dryers have many excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing the hand dryer of the present invention, FIG. 2 is a sectional view taken along line A--A in FIG. 1, and FIG. 3 is an electrical wiring diagram. 1...Outer box, 2...Blower storage room, 3...Hot air drying room, 4...Electric blower, 9...Heat storage body, 12
...Hot air outlet.

Claims (1)

[Scope of utility model registration request] The electric blower is stored in a blower storage chamber with an air inlet opening on the side at the top of the outer box, and the lower part of the outer box has a double-walled blower storage chamber facing the position corresponding to the fan of the electric blower. A wall-shaped hot air drying chamber is provided so as to be able to communicate with the blower storage chamber, and a heat storage body in which a heating heater is embedded is stored in the double wall of the hot air drying chamber with the heat storage body exposed inside the hot air drying chamber. A hand dryer made of