JPH0626690B2 - Humidifier - Google Patents

Description

The present invention relates to a humidifying device such as an ultrasonic humidifying device for supplying water in a water tank to a room.

(B) Conventional Technology A conventional humidifier of this type is disclosed in Japanese Utility Model Laid-Open No. 56-86427 and so on. The indoor humidity is obtained using a humidity sensor, and the indoor humidity is adjusted to a set value. It was the one that controlled the source.

(C) Problems to be Solved by the Invention However, since the indoor temperature and humidity have a close correlation and the humidity sensor itself is affected not only by the humidity but also by the temperature, the signal of the humidity sensor depends on the indoor humidity. Was fluctuating. Therefore, if the temperature is high, higher humidity is detected, and conversely, if the temperature is low, lower humidity is detected, and accurate humidity control and humidity display cannot be performed.

The present invention has been made in view of the above-described facts, and an object of the present invention is to provide a humidifying device that performs accurate humidity control and humidity display.

(D) Means for Solving the Problem In the present invention, in a humidifying device that supplies water in a water tank to a room, a humidity setting operation member that sets room humidity, a humidity sensor that detects the room humidity, and A temperature sensor for detecting the temperature inside the room, a correction means for correcting the signal of the humidity sensor by the signal of the temperature sensor, and a comparison means for comparing the output of the correction means and the level set by the humidity setting operation member, The control means controls the humidification source of the humidification device based on the output of the comparison means, and the display means that displays the indoor humidity based on the output of the correction means, and the display means has a plurality of indicator lights. At the same time, the plurality of indicator lamps are lit and displayed in stages according to the set level of the humidity setting operation member.

(E) Action As described above, the humidity sensor for detecting the indoor humidity and the temperature sensor for detecting the indoor temperature are provided, and the correcting means for correcting the signal of the humidity sensor by the signal of the temperature sensor is provided. Thereby, accurate humidity control and humidity display can be performed based on the output of the correction means.

Further, it is possible to accurately grasp the value of the indoor humidity with respect to the set level by causing the plurality of indicator lights to be lit and displayed stepwise according to the set level based on the output of the correction means. Therefore, it is possible to display humidity with good visibility and excellent design.

(F) Embodiment One embodiment of the present invention will be described in detail below with reference to the drawings. First (1)
Is the main body of the humidifier on the box with the legs (2) at the four corners of the lower surface,
A blower (3) and an ultrasonic transducer (humidification source) in the main body (1)
An oscillator circuit (4) and the like for driving (5) are provided.
A tank mounting table (6) and a water tank (7) are connected to the upper part of the main body (1), and a supply section (8) for supplying water to the water tank (7) is provided on the mounting table (6). A drop-type water supply tank (9) included therein is detachably mounted. When the ultrasonic transducer (5) attached to the bottom surface of the water tank (7) is driven, a water column is set up on the water surface for atomization work.

(10) is a spray cover located above the water tank (7) and juxtaposed with the tank (9) and detachably attached to the main body (1), and a spray port (11) is opened at the top. Detachable spray tube (1
2), and a lead-out tube (13) communicating with the spray port (11) and hanging down to near the water surface in the water tank (7) is integrally formed. Therefore, a water column is generated in the lead-out tube (13) by the vibrator (5), and the air blown by the blower (3) is introduced into the tube through the suction port (14) to rise and become a fine mist. It goes out with it and is supplied to the room.

(15) is an operation section provided on the front surface of the main body (1), which includes a driving operation knob (16) and a humidity setting lever (humidity setting operation member) (1
7) and a humidity display section (display means) (18) are provided. When the operation knob (16) is operated, the power switch (19) is closed, and the ultrasonic oscillation circuit (4) can be controlled to control the spray amount per minute. The setting lever
(17) can be set to an arbitrary humidity such as "low", "appropriate humidity", "high", "continuous", etc., and changes the resistance value of the variable resistor (20). The humidity indicator 18 comprises a light emitting diode capable of displaying that the indoor humidity is 30% to 70% and sequentially emitting light in proportion to the indoor humidity.

Further, (21) is a temperature sensor such as a thermistor, which is connected to the suction port (1
It is provided in the vicinity of 4) and detects the indoor temperature, and the resistance value decreases as the temperature rises. (22) is a humidity sensor provided on the circuit board (23), which detects indoor humidity.The resistance value decreases as the humidity increases, but it is also affected by temperature and the resistance value increases if the temperature is high. Becomes smaller.

Next, the electric circuit diagram of the present invention will be described with reference to FIG. (24) is a step-down transformer, and the input coil (25) is a general commercial AC power supply (26) of AC100V via the power switch (19).
Connected with. A smoothing capacitor (29) which is grounded to the diode (28) is connected to one output coil (27) of the transformer (24). (31) is an ultrasonic oscillator
A relay constituting a control circuit (control means) (30) for supplying or stopping power to an oscillation circuit (4) for oscillating (5), one end of which is the connection point (A) between the diode (28) and the capacitor (29). )It is connected to the. (32) is a transistor whose collector is connected to the other end of the relay (31) through a resistor (33), whose emitter is grounded and whose base is connected through a resistor (34) to a comparator (comparing means) described later. It is connected to the output terminal of the comparator (37) via (35) and the resistor (36). That is, the comparator (35) (3
The output of 7) controls the transistor (32) and the relay (3
Since 1) is excited or demagnetized, the vibrator (5) is controlled.

(38) is a transistor whose emitter is connected to the connection point (a) via resistors (39) and (40), and whose base is connected between the resistors (39) and (40) via a Zener diode (41). In addition, it is grounded through a resistor (42). Further, the collector of the transistor (38) is a light emitting diode (indicator light) as an indicator light for indicating humidity (43) (44) (45) (46) (47)
Is connected in series with the ground, and the humidity is 30% to 70%.
It is possible to display up to%.

(22) is the humidity sensor described above to which the voltage divided by the resistors (49) and (50) connected between the output terminals of the other output coil (48) of the step-down transformer (24) is applied. (twenty two)
The other end of the resistor (51), capacitor (52), diode (53),
It is grounded through a capacitor (54). Further, between the capacitor (52) and the diode (53), a reverse diode (55) and a capacitor (56), which are both grounded, are connected in parallel.

(57) is an amplifier, the non-inverting input terminal is grounded through a series circuit of a resistor (58) and a variable resistor (59), and the connection point between the diode (53) and the capacitor (54). It is connected to (B). The inverting input terminal of the amplifier (57) is grounded through the resistor (60) and is connected to the output terminal through the resistor (61). (21) is the above-mentioned temperature sensor such as a thermistor whose one end is grounded, and the other end is connected to the output terminal of the amplifier (57) through the resistor (62). And the resistor (62) form a correction means. (63)
Reference numerals (64), (65), and (66) are first to fourth comparators that form a display circuit, and the non-inverting input terminals of these comparators are resistors (67) (6).
8) It is connected to the other end of the temperature sensor (21) through (69) and (70), and is connected to the respective output terminals through resistors (71), (72), (73) and (74). The inverting input terminal of the fourth comparator (66) is connected to one end of the output coil (48) via the resistors (75) and (76), the diode (77) and the resistor (78). A smoothing capacitor (79) that can be grounded is connected to the connection point (C) between the diode (77) and the resistor (76).

The inverting input terminals have resistors (80), (81), (82) so that the reference voltages of the first to fourth comparators (63) (64) (65) (66) increase in order. ) Is connected to the connection point (D) between the inverting input terminal of the fourth comparator (66) and the resistor (75), and the inverting input terminal of the comparator (63) is connected via the resistor (95). Grounded. The divided potential between the voltage from the humidity sensor (22) and the output voltage from the temperature sensor (21) amplified by the amplifier (57) is supplied to these comparators (63) (64) (65) (66). It will be input, but at this time these comparators (63) (64) (65) (66)
Each of the output terminals has a diode (83) (84) (85) (86) so that the light emitting diodes (44) (45) (46) (47) emit light when the output of ) Is connected.

The resistance value of (20) changes due to the humidity setting lever (17) that sets the indoor humidity. With the variable resistor described above,
The other end is connected to 6) and is also connected to the non-inverting input terminals of the comparators (35) and (37) via resistors (87) and (88), respectively. (89) is the resistance of the comparator (35), (90) is the comparator (35)
Is a capacitor as a noise filter connected between both input terminals.

The output from the humidity sensor (22) thus amplified by the amplifier (57) is corrected by the humidity sensor (21), and the output of the comparator (35) is inverted via the resistor (91). It will be input to the input terminal.

One end of the inverting input terminal of the comparator (37) is an output coil (4
It is connected to the connection point between the resistor (92) and the resistor (93) connected to 8), and the capacitor (94) as a noise filter is connected between both input terminals.

The operation will be described below with the above configuration. First, rotate the operating knob (16) clockwise to turn on the power switch (1
9) closed, the other output coil (48) of the step-down transformer (24)
A step-down power source appears in. The power supply is half-wave rectified by a diode (77) through a resistor (78) and then a capacitor (7
Smoothed by 9) and used as a DC power source (76), variable resistor
(20), applied to the non-inverting input terminal of the comparator (35) via the resistor (87) and applied to the non-inverting input terminal of the comparator (37) via the resistor (88). Further, this DC power source is applied to the inverting input terminal of the fourth comparator (66) via the resistor (75) and the first to third comparators are respectively applied via the resistors (82) (81) (80). (6
3) Applied to the inverting input terminals of (64) and (65) respectively.

On the other hand, the power source from the output coil (48) is smoothed by the capacitor (54) after half-wave rectification by the diode (53) via the resistor (49), the humidity sensor (22), the resistor (51) and the capacitor (52). The power is supplied to the non-inverting input terminal of the amplifier (57). That is, the voltage input to the non-inverting input terminal of the amplifier (57) is a value that the humidity sensor (22) detects and outputs the indoor humidity, but if the indoor humidity is constant, the indoor temperature is low. Sometimes the output voltage of the humidity sensor (22) is low and the output voltage of the humidity sensor (22) is high when the room temperature is high.
The output of the humidity sensor (22) is linearly amplified by the amplifier (57), and then the temperature sensor (2) is passed through the resistor (62).
It is output to the other end of 1). Therefore, the output corrected by the temperature sensor (21) is output by the first to fourth comparators (63) (64) (65) (66).
It is to be input to the non-inverting input terminal of each via resistors (67), (68), (69) and (70) and to the comparator (35) via the resistor (91). is there.

Therefore, the change in the output due to the temperature change, which is the characteristic of the humidity sensor (22), can be corrected by the temperature sensor (21). That is, for example, if the room temperature is high, the humidity sensor (2
Although 2) is affected by not only humidity but also temperature, it has a smaller resistance value, but since the temperature sensor (21) has a small resistance value, it can be corrected by lowering the potential of the connection point (E). It is a thing.

Next, the humidity sensor corrected by the temperature sensor (21)
The display circuit operation for causing the light emitting diodes (43) (44) (45) (46) (47) of the humidity display section (18) to emit light based on the output from (22) will be described.

First, the output from the above-mentioned corrected humidity sensor (22) is applied to the non-inverting input terminals of the first to fourth comparators (63) (64) (65) (66) respectively with resistors (67) and (68). ), (69), and (70). At this time, when the indoor humidity does not reach 40%, the input level of the inverting input terminal of each comparator (63) (64) (65) (66) is higher than that of the non-inverting input terminal. Outputs a low level. The transistor (38) is conductive because the power source generated by the output coil (27) is applied through the diode (28) and the resistors (40) and (39), and the comparator (63) outputs a low level. Since the diode (83) is conducting, the light emitting diode (4
3) emits light. That is, the light emitting diode (43), which is turned on when the humidity does not reach 40%, may be used as a power indicator.

Next, the operation in which the indoor humidity gradually rises and the light emitting diodes (44) (45) (46) (47) light up will be described.
First, as described later, when the humidifying operation continues, the humidity sensor
Since the resistance value of (22) gradually decreases, the potential of the connection point (E) increases and sequentially exceeds the reference potential of each of the comparators (63) (64) (65) (66). At this time, for example, when the input level of the non-inverting input terminal of the comparator (63) exceeds the reference potential, the comparator (63) outputs a high level, but the output level of the comparator (64) is a low level. Since the diode (84) is conducting, the light emitting diodes (43) and (44) emit light, and it can be displayed that the humidity is 40%. In this way each comparator (63) (64) (65)
Each light emitting diode based on the output level of (66) (43) (44)
The blinking control of (45) (46) (47) is possible and the humidity is 70%.
Can be displayed.

Of course, the reverse operation is performed when the indoor humidity decreases.

Next, the operation of the humidity control by the humidity setting will be described. First, when the humidity setting lever (17) shown in FIGS. 1 and 3 is set to an arbitrary position, for example, a humidity of about 40%, the resistance value of the variable resistor (20) changes, and the comparator (35) The power source generated by the output coil (48) is applied to the non-inverting input terminal through the variable resistor (20) and the resistor (87). On the other hand, the output obtained by correcting the output of the humidity sensor (22) by the temperature sensor (21) is input to the inverting input terminal of the comparator (35). Therefore, the comparator (35) compares both inputs and outputs the comparison output to the control circuit (3
Send to 0. Therefore, if the input level of the non-inverting input terminal is higher, in other words, if the detected humidity is a value lower than 40% of the set humidity, the comparator (35) outputs the high level output as a resistance.
Output to the gate of the transistor (32) via (34), the transistor (32) becomes conductive, the relay (31) is excited, power is supplied to the oscillation circuit (4), and the ultrasonic transducer (5 ) Drives. That is, if the output of the humidity sensor (22) corrected by the temperature sensor (21) has a lower level than the output of the set humidity, the ultrasonic transducer (5) is driven from the time when the power switch (19) is closed, and the water tank (7) Atomizing work was carried out by setting up a water column on the water surface in
The wind from the blower (3) enters the outlet tube (13) through the suction port (14) and rises, and is supplied to the room through the spray port (11) together with mist. When the room is humidified in this way, the resistance value of the humidity sensor (22) gradually decreases and the potential of the connection point (E) gradually increases as described above. Therefore, when the input level of the non-inverting input terminal of the comparator (35) is exceeded, the transistor (32) is made non-conductive and the driving of the vibrator (5) is stopped. After this, of course, the comparator (35) works based on the change in the output of the humidity sensor (22) to control the vibrator (5), but the comparator (35) has a resistance (89).
The size of the operating range is determined by changing the resistance value of.
That is, for example, when the set humidity is 40%, the comparator (35) outputs a high level until the detection output corrected by the temperature sensor (21) of the humidity sensor (22) reaches a value corresponding to humidity 42%, and thereafter. By outputting a low level to a value corresponding to 38%, the humidity can be maintained at 40%.

In this way, the indoor humidity can be maintained at the set humidity.

Next, if you want to quickly humidify, set the humidity setting lever (1
7) should be moved to the "continuous" position shown in FIG. That is, in this "continuous" position, the resistance (20) changes and the comparator (3
The input level to the non-inverting input terminal of 7) rises, and this comparator (37) that uses the potential of the connection point (F) of the output coil (48) with the resistance (92) (93) of the power source , The high level is output because the input level of the non-inverting input terminal exceeds the value corresponding to the humidity of 70% or more, which is the reference potential. Therefore, regardless of the output of the humidity sensor (22) corrected by the temperature sensor (21), moving the humidity setting lever (17) to the "continuous" position forcibly turns on the transistor (32) and relays.
The ultrasonic transducer (5) is driven by the oscillation circuit (4) by exciting (31). Therefore, it is possible to rapidly humidify.

The output terminals of the comparators (35) and (37) are connected to resistors (34) (3
Since the base of the transistor (32) is connected via (6), the output of the comparator (37) is low level when it is set to less than 70% and is influenced by the output of the comparator (37). It can be controlled only by the output of the comparator (35).

(G) Effect of the Invention With the configuration of the present invention as described above, not only can accurate humidity control and humidity display be performed based on the output of the correction unit, but also the indoor humidity can be adjusted relative to the set level. It is possible to accurately understand whether it is a place value,
It is possible to display humidity with good visibility and good design.

[Brief description of drawings]

FIG. 1 is a front view of the humidifying device of the present invention, FIG. 2 is a vertical sectional front view of the humidifying device of the present invention, and FIG. 3 is an enlarged front view of an operating portion.
FIG. 1 is an electric circuit diagram showing an embodiment of the humidifying device of the present invention. (5) …… Ultrasonic transducer (humidification source), (17) …… Humidity setting lever (temperature setting operation member), (18) …… Humidity display section (display means), (21) …… Temperature sensor, (22) …… Humidity sensor, (3
0) ... control circuit (control means), (35) ... comparator (comparison means), (43) (44) (45) (46) (47) ... light emitting diode (indicator).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Kawada 180 Sakata, Odaizumi-cho, Gunma-gun Ogura-gun, Toyo Sanyo Electric Co., Ltd. (72) Takeshi Osawa 180 Sakata, Oizumi-cho, Uraku-gun, Gunma Prefecture Tokyo Sanyo Electric Co., Ltd. (56) Reference Japanese Patent Laid-Open No. 56-46937 (JP, A) Actually developed 57-60214 (JP, U)

Claims (1)

[Claims] 1. A humidifying device for supplying water in a water tank to a room, a humidity setting operation member for setting indoor humidity, a humidity sensor for detecting the indoor humidity, and a temperature sensor for detecting the indoor temperature. Correcting means for correcting the signal of the humidity sensor by the signal of the temperature sensor, comparing means for comparing the output of the correcting means with a level set by the humidity setting operation member, and the comparing means based on the output of the comparing means. The humidifying device is provided with a control means for controlling a humidifying source and a display means for displaying the indoor humidity based on the output of the correcting means, the display means having a plurality of indicator lights and setting of the humidity setting operation member. A humidifying device characterized in that the plurality of indicator lights are lit and displayed in stages according to the level.