JP3336847B2 - Dehumidifier control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifier controller for dehumidifying moisture in air.

[0002]

2. Description of the Related Art FIG. 8 is a sectional view showing a conventional dehumidifier. In the drawing, reference numeral 1 denotes an evaporator provided downstream of a suction port 2, and a condenser 3 is provided downstream thereof. Downstream thereof, an air outlet 7 having a wind direction variable vane 6 is provided via a blower fan 5. The evaporator 1 is received by a drain pan 9 having a drain port 8, and a drainage tank 10 is provided below the drain port 8.

On the other hand, the evaporator 1 and the condenser 3 are connected to a compressor 12 mounted on a base 11 via a refrigerant pipe to constitute a refrigeration cycle. A control circuit 14 is provided above the blower fan 5, and a humidity sensor 15 is provided in an air passage 13 near the suction port 2. Further, an operation display section 16 is provided above the control circuit 14, and an operation switch 17, a high humidity display lamp 18 and an appropriate humidity display lamp 19 are provided as shown in FIG.

Next, the operation will be described. When the operation switch 17 is pressed to turn on the power, the compressor 12 is energized by the control circuit 14, and high-temperature and high-pressure refrigerant gas flows into the condenser 3, and the condenser 3 is maintained at a high temperature. On the other hand, the blower fan 5 is also energized by the control circuit 14, and the refrigerant gas in the condenser 3 is cooled and condensed by the air sucked into the air passage 13 from the suction port 2, and condensed into a normal-temperature high-pressure refrigerant liquid. Exits from the evaporator 3 and further passes through a capillary to flow into the evaporator 1 as a low-temperature and low-pressure gas-liquid mixed state, evaporates by being heated by air, exits the evaporator 1 as a low-pressure refrigerant gas, and exits the compressor 12. Inhaled.

At the same time, the air is simultaneously cooled by the evaporator 1 to condense the water contained therein above the saturated steam pressure, and the dehumidified and condensed water is discharged to the drain port 8 of the drain pan 9.
And is stored in a drain tank 10. At the same time, the low-temperature air that has passed through the evaporator 1 is heated by the condenser 3 and blown out from the outlet 7 as dehumidified air at room temperature.

On the other hand, the humidity of the air sucked into the air passage 13 from the suction port 2 is detected by a humidity sensor 15,
The control circuit 14 determines whether the humidity is equal to or higher than a reference humidity,
If the humidity is equal to or higher than the reference humidity, the high humidity indicator lamp 18 is turned on to perform the above-described dehumidifying operation. If the humidity is equal to or lower than the reference humidity, the appropriate humidity indicator lamp 19 is turned on and the compressor 12 and the blower fan 5 are stopped. The dehumidifying operation stops.

[0007]

Since the control device of the conventional dehumidifier is configured as described above, it is necessary to display the humidity at a constant humidity even when the room temperature changes and to control the operation. When the summer is hot, the humidity is too high for the comfortable humidity,
When the winter was cold, there was a problem that the humidity was too low.
Further, when the humidity setting at low temperature is set high and the humidity setting at high temperature is set low, there is a problem that the humidity display suddenly changes when changing from high temperature to low temperature.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a dehumidifier capable of setting an appropriate humidity in accordance with the outside air temperature and having a humidity display which does not suddenly change even when the temperature changes. The purpose is to obtain a control device.

[0009]

According to a first aspect of the present invention, there is provided a control device for a dehumidifier, wherein a humidity hysteresis is set such that the humidity at the time when each humidity display is changed is set to be several percent lower when the humidity drops than when the humidity rises. Further, a change in the set humidity when each temperature zone changes is provided with a temperature hysteresis that changes at a temperature several degrees lower when the temperature drops than when the temperature rises.

[0010] The control device of the dehumidifier according to claim 2 is configured to change the magnitude of the temperature hysteresis and the humidity hysteresis in accordance with the temperature and the humidity.

Further, the control device for the dehumidifier according to claim 3 is provided with a variable means capable of arbitrarily changing the magnitudes of the temperature hysteresis and the humidity hysteresis.

Further, in the control device for a dehumidifier according to the fourth aspect, the operation mode is changed according to each humidity level.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 20 denotes a temperature / humidity sensor provided in the air passage 13 near the suction port 2, reference numeral 21 denotes a control circuit as shown in FIG. 3, and reference numeral 22 denotes an operation display unit as shown in FIG. is there. In FIG. 2, reference numerals 23, 24, and 25 denote humidity display lamps for performing three-stage humidity display of "high humidity", "slightly high humidity", and "suitable humidity". In FIG. 3, reference numeral 26 denotes a control microcomputer;
A relay 28 that is turned off is a triac that changes the duty ratio of the blower fan 5. Figure 4 shows the humidity display lamp and the temperature
It is explanatory drawing which shows the relationship with humidity.

Next, the operation will be described. Temperature and humidity sensor 2
By detecting the room temperature and the humidity at 0, the microcomputer 26 makes a determination, and the humidity display lamps 23, 24, 25 perform humidity display. When the dehumidifier starts operation, the humidity decreases. At this time, as shown in FIG. 4, the change to “high humidity”, “slightly high humidity”, and “appropriate humidity” at the time of humidity drop is caused by the humidity hysteresis. The display changes with the line of, and the change to "appropriate humidity", "slightly high humidity", or "high humidity" when the humidity rises is changed by the line above the humidity hysteresis.

Further, the humidity indications of "high humidity", "slightly high humidity", and "suitable humidity" are set differently according to the room temperature, and "suitable humidity" at high temperatures improves comfort. In order to reduce the throat discomfort and the like, the "appropriate humidity" at a low temperature is set higher. In this case, a temperature hysteresis is provided so that the display does not change due to a minute change in the room temperature due to the operation of the dehumidifier or the like. When the room temperature rises, the display changes on the line with the higher humidity, and when the room temperature drops, the display changes on the line with the lower humidity.

As described above, according to the present invention, the humidity is displayed in two or more stages, and the humidity of the humidity display is changed in the temperature region of two or more stages. By providing the temperature hysteresis, there is an effect that a dehumidifier having a small change in humidity display with respect to a small change in humidity or temperature can be obtained.

Embodiment 2 FIG. Next, a second embodiment of the present invention will be described with reference to the drawings. In FIG. 5, the magnitudes of the temperature hysteresis a and b are changed according to the temperature and humidity.
Further, the magnitudes of the humidity hysteresis c and d are changed according to the temperature and humidity. During high temperatures and high humidity, such as in summer, the dehumidifier has a large dehumidifying capacity and the rate of humidity change is fast,
The humidity hysteresis c was increased, while the humidity hysteresis d was reduced at low temperatures and low humidity, such as in winter, because the dehumidifier had a small dehumidifying capacity and a low rate of change in humidity. Also,
The temperature hysteresis a is increased when the temperature of the dehumidifier is OFF when the temperature is low, and the temperature hysteresis b is decreased when the temperature is high because the temperature decrease is slower.

As described above, if the magnitudes of the temperature hysteresis a and b and the humidity hysteresis c and d are changed in accordance with the humidity and the temperature, the change in the humidity display can be made even more for small changes in the humidity and temperature. There is an effect that a small amount of dehumidifier can be obtained.

Embodiment 3 Next, a third embodiment of the present invention will be described with reference to the drawings. In FIG. 6, reference numeral 29 denotes an adjustment knob as a means for changing the humidity hysteresis c and d, and reference numeral 30 denotes an adjustment knob as a means for changing the temperature hysteresis a and b. FIG. 7 is a control circuit diagram thereof. In this manner, the adjustment knob 29 can be used to increase the humidity hysteresis c, d when the change in humidity is fast due to the influence of the size of the room, and to be small when the change in humidity is slow. Further, similarly, since the temperature hysteresis a and b can be adjusted by the adjusting knob 30 according to the speed of the temperature change, the hysteresis suitable for the use condition can be set.

Embodiment 4 Next, a fourth embodiment of the present invention will be described with reference to the drawings. In FIG. 3, the temperature and humidity sensor 20 detects the room temperature and humidity, and the microcomputer 26 determines which of “high humidity”, “slightly high humidity”, and “appropriate humidity” as shown in FIG. Then, based on the determination result, the operation mode of the blower fan 5 is changed. For example,
In the case of "high humidity", the blower fan 5 performs the Hi operation by increasing the duty ratio in the triac 28, and in the case of "slightly humid", the blower fan 5 becomes Lo by reducing the duty ratio by the triac 28. Operate, and in case of “appropriate humidity”, turn off blower fan 5 by triac 28
And the compressor 12 is turned off by the relay 27
Is what you do.

Thus, in the case of "high humidity", dehumidification is rapidly performed by Hi operation, in the case of "slightly high humidity", dehumidification operation without discomfort is performed quietly by Lo operation, and in the case of "appropriate humidity" Keeps the proper humidity by turning off the operation,
It is possible to realize comfort and energy saving without sound.

[0022]

As described above, according to the first aspect of the present invention, the humidity is displayed in two or more steps, and the humidity of the humidity display is changed in the temperature range of two or more steps. By providing the humidity hysteresis and the temperature hysteresis respectively, there is an effect that a dehumidifier having a small change in humidity display with respect to a small change in humidity or temperature can be obtained.

According to the second aspect of the present invention, the magnitudes of the temperature hysteresis and the humidity hysteresis are changed in accordance with the humidity and the temperature, so that the humidity display has less change in the humidity display with respect to a small change in the humidity or the temperature. There is an effect that can be obtained.

According to the third aspect of the present invention, by providing a variable means capable of arbitrarily changing the temperature hysteresis and the humidity hysteresis, the hysteresis can be set to a hysteresis suitable for use conditions. There is an effect that can be obtained.

According to the fourth aspect of the present invention, by changing the operation mode between Hi, Lo, and OFF according to each humidity level, there is an effect that a more comfortable and energy-saving dehumidifier can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional side view of a dehumidifier according to a first embodiment of the present invention.

FIG. 2 is a front view of the operation display unit according to the first embodiment of the present invention.

FIG. 3 is a control circuit diagram according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a relationship between temperature / humidity and humidity display according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a relationship between temperature / humidity and humidity display according to a second embodiment of the present invention.

FIG. 6 is a front view of an operation display unit according to a third embodiment of the present invention.

FIG. 7 is a control circuit diagram according to a third embodiment of the present invention.

FIG. 8 is a sectional side view showing a conventional dehumidifier.

FIG. 9 is a front view of an operation display unit of a conventional dehumidifier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Evaporator 3 Condenser 5 Ventilation fan 20 Temperature / humidity sensor 21 Control circuit 23, 24, 25 Humidity indicator lamp a, b Temperature hysteresis c, d Humidity hysteresis

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-74529 (JP, A) JP-A-4-64109 (JP, A) JP-A-6-74528 (JP, A) JP-A-60-1985 8647 (JP, A) JP-A-7-35389 (JP, A) JP-A-62-135055 (JP, U) JP-A-57-15012 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 11/02 102

Claims (4)

(57) [Claims] 1. A compressor, an evaporator, a condenser, a blower fan, a temperature / humidity sensor, a control circuit, a humidity display in two or more stages, and a humidity in two or more stages. In a dehumidifier with a different display setting level, a humidity hysteresis is provided in which the humidity at the time of switching each humidity display is several percent lower than when the humidity rises when the humidity drops, and further, in the high, medium, and low temperature ranges. A control device for a dehumidifier, wherein a temperature hysteresis is provided in which a change in set humidity when the temperature changes is lower by several degrees when the temperature is lower than when the temperature is higher. 2. The dehumidifier control device according to claim 1, wherein the magnitudes of the temperature hysteresis and the humidity hysteresis are changed according to the temperature and the humidity. 3. The control device for a dehumidifier according to claim 2, further comprising variable means for arbitrarily changing the magnitudes of the temperature hysteresis and the humidity hysteresis. 4. The control device for a dehumidifier according to claim 1, wherein an operation mode of the dehumidification operation is changed according to each humidity level.