JPS63204044A - Humidifying device - Google Patents

Abstract

PURPOSE:To continuously achieve function and to prevent wasteful consumption of power, by providing an alarming means which demands user to feed water by clearly displaying a dry-burning state. CONSTITUTION:When a humidifying state continue to lower a water level in a feed water tank 1 the temperature of a vaporizing cylinder 2 increases with lowering of the water level. When some temperature is reached a temperature over-increase preventing device 5 is turned OFF, and a display lamp 12 is connected in series to a heater 3 together with a high resistor 11 to light ON a display lamp 6. Simultaneously, the applying voltage of the heater 3 having a low resistance load is reduced to a very low value to hardly generate heat, and thereby the temperature of the vaporizing cylinder 2 is decreased. When temperature is decreased to the ON point of the temperature over-increase preventing device 5, the display lamp 12 is short-circuited again, a total voltage is applied on the heater 3 to generate heat. When a water level is low or a tank is empty, temperature increases to the OFF point of the temperature over- increases preventing device 5 in an extreme short time to light ON the display lamp 12 again. As noted above, the display lamp 12 is lighted ON to clearly inform a user of a dry-burning state.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a humidifying device that is added to an electric humidifier, an electric stove, or an electric warm air fan.

2. Description of the Related Art As shown in FIG. 3, a conventional electric heating type humidifier includes a water supply tank 1 having a water supply port 1a at the bottom thereof, and an evaporation tube connected to the water supply port 1a by a tube 9 and having a heater 3 on its outer surface. 2, an overtemperature rise preventer 5 fixed to the evaporator cylinder 2 to detect a temperature rise during dry heating and cut off the power to the heater 3, and a temperature overrise preventer 5 connected between both poles of the power source to power the humidifier. It was comprised of an indicator light 12 that displayed.

With the above configuration, the temperature of the evaporator tube 2 increases during empty firing,
When this is detected, the overheating preventer 5 is activated to prevent overheating during empty firing.

Problems to be Solved by the Invention However, with the above configuration, the indicator light 6 remains lit even when the air is empty, and the user cannot judge when to supply water, so the air may become dry without realizing it. However, there was a problem in that electricity was wasted even though no humidification was being performed.

In view of the above-mentioned problems of the conventional example, the present invention aims to clearly display the empty boiling state to urge the user to refill water, thereby continuously achieving the original function and preventing waste of power. It is.

Means for Solving the Problem In order to solve this problem, the humidifying device of the present invention includes a water supply tank having a water supply port at the bottom thereof, and an evaporation tube connected to the water supply port by a tube and having a heater on the outer surface. , an over-temperature rise preventer fixed to the evaporator cylinder and connected in series with the heater, and a high-resistance load dry warning means connected between the terminals of the over-temperature rise preventer. It is.

Because of the structure that exceeds the function, if the water in the empty tank or evaporator cylinder continues to be energized when the water level is low, the evaporator cylinder temperature will rise, the overtemperature rise preventer will be turned off, and the empty state transmitting means and the heater will be connected in series. Since the connection is made and the voltage is divided by the resistance ratio, the heat generation of the heater with a low resistance load is reduced compared to the empty heating warning means, preventing overheating, and the empty heating warning means makes it clear to the user that the heating condition is empty. Inform the staff and urge them to supply water or stop using the water.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 2 shows a structural sectional view of an electrothermal humidifier according to an embodiment of the present invention.

In Fig. 2, 1 is a water tank with a drain port 1b at the top and a water supply port 1a at the bottom;
3 is a heater wrapped around and fixed to the outer surface of the evaporator cylinder; 4a;
, 4b is an insulating sheet, 6 is an automatic reset type overheating preventer, 6 is an empty warning means consisting of a high resistance 11 and an indicator light 12, 7 is a water inlet and evaporation port, 8 is a power switch, 9 is a A tube connects the water supply port 1Δ of the water supply tank 1 and the evaporator cylinder, 10 is a connection pipe that connects the water inlet/evaporation lower and the evaporator cylinder 2, and 13 is the main body.

FIG. 1 shows an electrical wiring diagram in one embodiment of the present invention, in which a heater 3 is connected in series with an overtemperature preventer 6 and a power switch 8, and is connected to a power source. Also, the dry boil warning means 6 is connected between both terminals of the overtemperature rise preventer 5.

The operation of the electrothermal humidifier configured as described above will be explained.

First, when water is injected into the water inlet and evaporation lower, it passes through the evaporator tube 2 and is stored while pushing out the air in the water supply tank 1 through the drain port 1b. Next, when the power switch 8 is turned on, a current flows through the heater 3 and generates heat, heating the water in the evaporator 2 and generating water vapor. The rising air causes the water to be discharged to the outside through the water inlet and evaporation lower, where it is dispersed and absorbed into the indoor air, increasing humidity. At this time, the overtemperature rise preventer 5 is closed and the indicator light 12 is short-circuited and is not lit.

As the humidified state continues and the water level in the water supply tank 1 falls, the temperature of the evaporator tube 2 rises accordingly, and when the temperature reaches a certain temperature, the overtemperature rise preventer 5 turns off and the indicator light 12 turns on the high resistance 11.
At the same time, the heater 3 is connected in series with the heater 3, and the indicator light 6 lights up. At the same time, the voltage applied to the heater 3 with a low resistance load becomes extremely small, and the temperature of the evaporator tube 2 decreases because it hardly generates heat. When the ONN point source temperature of the overtemperature rise preventer 5 drops, the indicator light 12 is short-circuited again and the full voltage is applied to the heater 3, which generates heat, but if the water level is low or the tank is empty, the temperature will rise very quickly. The temperature rises to the OFF point of the preventer 5 and the indicator light 12 is turned on again.

As described above, according to this embodiment, when electricity is continued when the tank is empty or at a low water level (dry boiling state), the overtemperature rise preventer 5 not only operates to prevent overheating, but also turns on the indicator light 12 to indicate that the water level is low. The status can be clearly communicated to the user.

In the embodiment, the empty cooking warning means is an indicator light, but the empty cooking warning means may also be a buzzer, and if the buzzer is used, the empty cooking state can be clearly communicated more clearly than audibly even if the user is not paying attention.

Effects of the Invention As described above, the present invention includes a water supply tank, an evaporator cylinder equipped with a heater, an overtemperature rise preventer fixed to the evaporator cylinder and connected in series with the heater, and an overtemperature rise preventer. By constructing a dry boil warning means with a high resistance load connected between both terminals of the boiler, the dry boil condition can be clearly communicated to the user, and it is less likely that the boiler will be left unattended. It is highly effective in that it has a humidifying function and can also completely prevent wastage of electricity.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a humidifying device which is an embodiment of the present invention;
The figure is a cross-sectional view of the same humidifying device, and FIG. 3 is a cross-sectional view of a conventional humidifying device. 1... Water supply tank, 1a... Water supply port,
1b... Drain port, 2... Evaporator tube, 3.
...heater, 4&. 4b...Insulating sheet, 6...Temperature rise preventer, 6...Dry warning means, 7...
・Water inlet and evaporation port, 8... Power switch, 9.
...Tube, 1o...Connection pipe, 1
1...High resistance, 12...Indicator light, 13
...Body. Name of agent: Patent attorney Toshio Nakao and 1 other person 3=
1ya ripe Peter 5-° temperature overrise preventer 6- wealth warning means 8-- electric 'shihara switch 11--
- High R (wat f2-indicator light Fig. l)

Claims (1)

[Claims] A water supply tank having a water supply port at the bottom thereof, an evaporator cylinder connected to the water supply port by a tube and having a heater on its outer surface, and an overtemperature rise preventer fixed to the evaporator cylinder and connected in series with the heater. and a dry warning means with a high resistance load connected between the terminals of the overtemperature rise preventer.