JPH0842903A - Heater type humidifier - Google Patents

Abstract

PURPOSE:To provide a heater type humidifier which makes it possible to detect a drop in a water level in a humidification tank without using a float and displaying accurately an equipment state, and what is more, to clean the equipment easily. CONSTITUTION:This heater type humidifier is provided with a humidification tank 3 or the humidification tank 3 and water level tank where a heater 4 is mounted to the humidification tank 3 and a first temperature sensing switch 1 is installed to change over the energization of the heater 4 at least by two stages and a second temperature sensing switch 2 is also installed to control the energization of the heater 4 with an indication circuit. During humidification time, humidification is displayed while the energization of the heat 4 is halted during a drop in a water level in the humidification tank 3 and water supply is also displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater type humidifier which heats water in a humidifying tank with a heater and humidifies the inside of a room with the steam.

[0002]

2. Description of the Related Art Conventionally, in this type of humidifier, there is a method of using a water level detecting float as a means for detecting a drop in the water level in a humidifying tank, stopping the energization of a heater, and displaying this.

[0003]

However, when the float is placed in hot water as described above, the heat resistance of the float becomes a problem, and when cleaning scale such as scale and scaly attached to the humidifying tank, The float was an obstacle and it was difficult to wash the humidifier completely, and the protrusions and recesses of the float itself were difficult to wash.

The present invention solves the above-mentioned drawbacks and provides a heater-type humidifier that can detect a drop in the water level of a humidifying tank without using a float, can clearly display the state of the equipment, and is easy to clean. is there.

[0005]

That is, in the present invention, a humidifying tank or a humidifying tank and one water level indicating tank are provided, a heater is attached to the humidifying tank, and the heater is energized in at least two stages or more. A first temperature switch for switching, a second temperature switch for controlling energization of the heater, and a display circuit are provided, and humidification is displayed during humidification, and energization of the heater is stopped when the water level in the humidification tank drops. It is configured to display water supply.

Further, according to the present invention, there is provided a humidifying tank, or a humidifying tank and one water level indicating tank, a heater is attached to the humidifying tank, and an automatic reset type thermostat for switching the energization of the heater in at least two stages or more. A thermostat of a manual reset type for controlling the energization of the heater and a display circuit are provided, and the humidification is displayed when the humidification is performed, and the energization of the heater is stopped and the water is supplied when the water level of the humidification tank is lowered.

Further, according to the present invention, there is provided a humidification tank, or a humidification tank and one water level display tank, a heater is attached to the humidification tank, and an automatic reset type thermostat for switching the energization of the heater in at least two stages or more. A relay for controlling the energization of the heater, a relay drive circuit configured to operate based on the temperature detected by the thermistor and held until the power is turned off, and a display circuit. Then, when the water level in the humidifying tank is lowered, the heater is de-energized and the water supply is displayed.

[0008]

With the above construction, in the present invention, when the water level in the humidifying tank is lowered and the water temperature rises, the second temperature sensitive switch is actuated, the energization of the heater is interrupted to stop the humidification, and the display circuit indicates water supply. To do.

Further, in the present invention, the water level in the humidifying tank is lowered,
When the water temperature rises, a thermostat of manual reset type operates, interrupts the energization of the heater to stop the humidification, and the display circuit displays the water supply. When the manual return switch is pressed, the thermostat is restored and the humidification is restarted.

Further, in the present invention, the water level in the humidifying tank is lowered,
When the water temperature rises, the relay operates based on the temperature detected by the thermistor, interrupts the power supply to the heater, and stops humidification.
The display circuit displays the water supply and the state is maintained. When the power of the device is turned off, the relay is restored, and when the power is turned on again, humidification is restarted.

[0011]

1 and 2 are vertical sectional views showing an embodiment of a heater type humidifier according to the present invention. In FIG. 1, 3 is a humidification tank, and water is put in the tank for humidification. An automatic resetting type thermostat 1 which is a first temperature sensitive switch is attached to the upper part of the humidifying tank 3, and a manual resetting type thermostat 2 which is a second temperature sensitive switch is attached to the lower part thereof. These thermostats 1 and 2 may be directly attached to the outer wall of the humidification tank 3 or may be attached in the vicinity thereof. Further, on the outer peripheral wall of the bottom of the humidifying tank 3, there is provided a heater 4 for heating the water in the tank. The heater 4 is divided as will be described later and has a structure capable of conducting electricity in two stages. is there.

Although not shown, the humidifier is provided with a humidification display section and a water supply display section for notifying the state of the equipment.

The above is the structure of the heater type humidifier, but in the example of FIG. 2, the water level indicator tank 5 is provided on one side of the humidifier tank 3 and the water level of the humidifier tank 3 can be seen through the transparent window 6. Since the other configurations are substantially the same as those in FIG. 1, the description thereof will be omitted.

FIGS. 3 and 4 are examples of control circuit diagrams of the present humidifier, and the operation of the heater type humidifier according to the present invention will be described below based on these examples.

FIG. 3 shows an embodiment in which a manual reset type thermostat 2 is used to control the energization of the heater 4. This circuit is composed of an auto-reset type thermostat 1 for switching the energization of the heater 4 between two stages of the initial heating heaters 4a, 4b and the humidifying heater 4a, and a manual reset type thermostat 2 for controlling the energization of the heater 4. It is composed of a heater circuit 10 and a display circuit 7 for displaying the state of the equipment by a humidifying lamp LP1 and a water supply lamp LP2.

With this structure, when AC power is applied to the humidifier, the heaters 4a and 4b are energized via the thermostat 1 and the thermostat 2, and the water in the humidifier tank 3 has a relatively large electric power (for example, 400 W). ) Is heated rapidly. When the water in the tank boils, this heat actuates the thermostat 1 attached to the upper part of the humidification tank 3 and the heater 4
Since the power supply to b is cut off, the heating power is halved (for example, 2
Humidification is performed in the state of (00W). During humidification, the display circuit 7 has a thermostat 2 to a humidifying lamp LP1 to a resistor R1.
Current loop is formed, the humidifying lamp LP1 lights up,
Humidification is displayed on the display.

When humidification continues and the water level in the tank drops,
The temperature around the heater 4 at the bottom of the humidifying tank 3 rises, and the thermostat 2 mounted in the vicinity thereof operates. As a result, the current flows in through the display circuit 7, so that the energizing current of the heater 4a is extremely reduced (the electric power is about 1 mW), the energizing is effectively stopped, and the humidification is interrupted. At this time, a current loop of the water supply lamp LP2-resistor R2-heater 4a is formed in the display circuit 7, the water supply lamp LP1 is turned on, and water supply is displayed on the display unit. Humidification lamp LP1
A current also flows, but it does not light because it is a small current, and the humidification display goes off. Further, since the thermostat 2 is a manual reset type, this state is maintained unless the user presses the return switch. At this time, since the thermostat 1 automatically returns, humidification is restarted by supplying water to the humidification tank 3 and pressing the return switch.

Here, the manual reset type is used for the thermostat 2. In the automatic reset type, even if the heater energization is stopped due to the operation of the thermostat 2, the thermostat 2 is restored and the humidification is resumed when the water temperature drops. Therefore, this is a means for avoiding the inconvenience that the operations of water supply-humidification-water supply are repeated.

FIG. 4 shows a relay RL for controlling the energization of the heater 4.
This is an example using. This circuit is composed of the above-mentioned heater circuit 10, the display circuit 7, and the relay drive circuit 9 which is operated by the DC power source VDD. This relay drive circuit 9
Thus, the relay RL operates based on the temperature detected by a thermistor TH (not shown in FIGS. 1 and 2) attached in place of the above-mentioned manual reset type thermostat 2 and maintains that state until the power is turned off. To be done.

That is, when the water temperature is low, the thermistor TH exhibits a high resistance, and the + input voltage of the comparator IC1 generated by the divided voltage with the resistor R3 becomes higher than the reference voltage E of the − input, so the output becomes “H”. , Inverter IC2,
The transistor Q is turned on via IC3 to operate the relay RL. Therefore, the contact rl comes into contact with the NO side, the AC power is applied through the contact rl, the heater 4 is energized, and the humidification is started in the same manner as in the above-described example. Of course, at this time, the humidification lamp LP1 is turned on and the humidification is displayed.

During humidification, if the water level in the humidifying tank 3 decreases, the water temperature rises, the thermistor TH exhibits low resistance, and the + input voltage of the comparator IC1 due to the divided voltage with the resistance R3 is-.
Since it becomes lower than the input reference voltage E, the output changes to "L" and the transistor Q is turned off. As a result, relay R
Since the energization of L is cut off and the contact rl returns to the NC side, the energization of the heater 4 is stopped and at the same time the relay contact rl to the water supply lamp L.
A current loop of P2 to resistance R2 is formed to supply water L
P2 lights up and the water supply is displayed. At this time, the humidifying lamp is turned off. After that, the water temperature drops and the comparator IC1
Even if the + input voltage of V exceeds the reference voltage E, its output remains fixed at "L". The reason is that the circuit composed of the inverters IC2, IC3, the diode D, the resistor R4, the capacitor C, etc. is a latch circuit 8 having a holding function.
Is formed. That is, the comparator IC1
This is because the output of the inverter IC3 also becomes "L" when the output of the comparator changes to "L", and this "L" level fixes the output of the comparator IC1 at "L" via the diode D. Therefore, the water supply indicator is held until the power is turned off and the latch is released. Incidentally, the resistor R4 and the capacitor C are for initial resetting of the latch circuit 8, whereby the output of the inverter IC3 is forcibly set to "H" when the power is turned on.

As described above in the embodiments, the water level is not detected by using the float as in the conventional case, but the decrease in the water level is detected by the temperature change of the humidifying tank 3, and at the same time, the humidifying and water supplying states are indicated by a lamp. Therefore, the state of the device can be clearly notified without using the float, and since the float is not used, cleaning can be facilitated, and the humidifier can be provided to the user as an extremely easy-to-use humidifier.

[0023]

As described above, according to the present invention, a humidifying tank or a humidifying tank and one water level indicating tank are provided, a heater is attached to the humidifying tank, and the heater is energized in at least two stages or more. A first temperature sensitive switch for switching to, a second temperature sensitive switch for controlling energization of the heater, and a display circuit are provided, humidification is displayed when humidifying, and energization of the heater is stopped when the water level in the humidifying tank drops. Since the water supply is also displayed, it is not necessary to attach a float for detecting the water level in the humidifying tank as in the conventional case, and it becomes possible to easily clean water stains, scaly and the like adhering to the inside of the tank. In addition, since the state of the device is clearly displayed on the lamp during humidification and water supply, it is extremely convenient for the user.

Further, according to the present invention, there is provided a humidifying tank, or a humidifying tank and one water level indicating tank, a heater is attached to the humidifying tank, and the heater is energized in at least two steps to switch the power supply to at least two stages. The thermostat, a thermostat of manual reset type for controlling the energization of the heater, and a display circuit are provided, and the humidification is displayed when the humidification is performed, and the energization of the heater is stopped and the water supply is displayed when the water level of the humidification tank is lowered. Therefore, when the water level in the humidifying tank is lowered and the water supply state is reached, this state is maintained by the thermostat of the manual reset type, so that the humidification is restarted by the subsequent decrease in the water temperature, and the operation of water supply-humidification-water supply is repeated. The safety can be improved because the user can restart humidification by pressing the manual return switch after replenishing water.

Further, according to the present invention, there is provided a humidifying tank, or a humidifying tank and one water level indicating tank, a heater is attached to the humidifying tank, and the heater is energized to switch the energization of the heater in at least two stages or more. The thermostat, a relay that controls the energization of the heater, a relay drive circuit that is configured so that the relay operates based on the temperature detected by the thermistor, and is held until the power is turned off, and a display circuit. Humidity is displayed, and when the water level in the humidification tank is lowered, the heater is turned off and the water supply is displayed.
Similarly to the above, since the water supply state is maintained until the power of the device is turned off, it is possible to eliminate the inconvenience of repeating the operations of water supply, humidification, and water supply, and the safety of the device is improved.
In addition, since the temperature detected by the thermistor is used, it is easy to set the water level for water supply. Also, since it has a control circuit with a DC power supply, more effective functions such as ringing the buzzer at the time of water supply are easily realized It is a convenient humidifier that makes possible and increases the added value.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a heater-type humidifier according to the present invention.

FIG. 2 is a longitudinal sectional view showing an embodiment of a heater type humidifier different from that of FIG.

FIG. 3 is a control circuit diagram of a heater-type humidifier.

FIG. 4 is a control circuit diagram of a heater-type humidifier different from that of FIG.

[Explanation of symbols]

1 Automatic temperature-return type thermostat which is the first temperature-sensitive switch 2 Manual reset-type thermostat which is the second temperature-sensitive switch 3 Humidification tank 4 Heater 5 Water level display tank 7 Display circuit 9 Relay drive circuit RL relay TH thermistor

Front Page Continuation (72) Inventor Kyoko Yoshida 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A first temperature-sensitive switch having a humidifying tank, or a humidifying tank and one water level display tank, wherein a heater is attached to the humidifying tank and the energization of the heater is switched in at least two stages. A heater type characterized by including a second temperature-sensitive switch for controlling the energization of the heater and a display circuit, displaying humidification when humidifying, and stopping the energization of the heater and displaying water supply when the water level in the humidifying tank drops. humidifier. 2. A humidification tank, or a humidification tank and one water level display tank, a heater is attached to the humidification tank, and an automatic reset type thermostat for switching the energization of the heater in at least two stages or more, and the heater. A heater-type humidifier, which is equipped with a manually resetting thermostat for controlling the energization of the device and a display circuit, displays the humidification when humidifying, and stops the energization of the heater and the water supply when the water level of the humidifying tank drops. . 3. A humidification tank, or a humidification tank and one water level display tank, a heater is attached to the humidification tank, and an automatic resetting type thermostat that switches energization of the heater in at least two stages or more, and the heater. It has a relay that controls the energization of the device, a relay drive circuit that is configured to operate based on the temperature detected by the thermistor, and that is held until the power is turned off, and a display circuit. A heater-type humidifier characterized in that when the water level in the tank is lowered, the energization of the heater is stopped and the water supply is displayed.