JPH0642794A - Dehumidifier equipped with humidity sensor - Google Patents

Abstract

PURPOSE:To permit the reduction of the fluctuation width of humidity by provid ing a dehumidifying means, a humidity sensor, a timer and a controller for stopping and/or operating the dehumidifying means. CONSTITUTION:A controller 9 stops the operation of a dehumidifying means and starts a timer 80 when an electric output (e), outputted by a humidity sensor 6, becomes lower than a reference value with respect to a set humidity. Further, the controller 9 operates the dehumidifying means when the electric output (e), outputted by the humidity sensor 6, becomes higher than the reference value with respect to the set humidity or the predetermined time of the timer 80 is finished during stopping the dehumidifying means. According to this method, a humidity in a room can be controlled in the vicinity of the set humidity upon dehumidifying operation, the fluctuating width of humidity can be reduced and prominent comfortability can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifier equipped with a humidity sensor.

[0002]

2. Description of the Related Art Conventionally, a dehumidifying means for reducing the amount of water vapor in room air, a humidity sensor for sending an output voltage e corresponding to the humidity of the room air, and an output voltage e during the operation of the dehumidifying means.
Is less than or equal to the reference value E ₁ for the set humidity, the controller deactivates the dehumidifying means, and operates the dehumidifying means when the output voltage e is greater than or equal to the reference value E ₁ for the set humidity while the dehumidifying means is stopped. There is known a dehumidifying device including a humidity sensor.

[0003]

By the way, the humidity sensor has a hysteresis characteristic and has a set humidity (for example, 60%).
The output voltage e = reference value E ₁ is designed so that the output voltage is lower than the set humidity (for example, 57%) in the dehumidifying phase while the dehumidifying means is operating, as shown in FIG. e
= Reference value E ₁ , and the output voltage e = reference value E ₁ when the humidity exceeds the set humidity (for example, 63%) in the humidification phase while the dehumidifying means is stopped. Therefore, in the dehumidifying device equipped with the humidity sensor, even if the humidity is maintained at 60% (predetermined humidity) during the dehumidifying operation, the actual humidity is 53% to
There is a drawback that it fluctuates between 67%, the humidity fluctuation range is large, and the comfort is poor.

The object of the present invention is to control the indoor humidity in the vicinity of the set humidity during dehumidifying operation, and to reduce the fluctuation range of humidity.
(EN) Provided is a dehumidifying device having a humidity sensor which is excellent in comfort.

[0005]

In order to solve the above problems, the present invention relates to a dehumidifying means for reducing the amount of water vapor in room air, a humidity sensor for sending out an electric output according to the humidity of the room air, and a predetermined time. Is set, a timer that starts timing when the electric output becomes equal to or lower than a reference value for the set humidity during operation of the dehumidifying unit, and the timer when the electric output becomes equal to or less than the reference value for the set humidity during operation of the dehumidifying unit. And a controller that stops the operation of the dehumidifying means and operates the dehumidifying means when the electric output becomes equal to or higher than a reference value with respect to a set humidity while the dehumidifying means is stopped, or when the predetermined time ends. It was adopted.

[0006]

The controller deactivates the dehumidifying means when the electric output sent from the humidity sensor falls below the reference value for the set humidity while the dehumidifying means is operating, and also starts the timer. The dehumidifying means is operated when the electric output sent from the sensor becomes equal to or higher than the reference value for the set humidity or when the predetermined time of the timer expires. Here, when the dehumidifying means is stopped, the predetermined time of the timer is set so that the timer times out before the electric output sent from the humidity sensor reaches the reference value for the set humidity. The highest point of humidity decreases and approaches the set humidity from above, and the lowest point of humidity when the dehumidifying means stops reactivating increases and approaches the set humidity from below.

[0007]

As a result of the above operation, the dehumidifying device equipped with the humidity sensor can control the indoor humidity in the vicinity of the set humidity during dehumidifying operation, have a small humidity fluctuation range, and are excellent in comfort.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, an air conditioner A includes an indoor unit 1 having a blower casing 11, a convection fan 12, a refrigerant evaporator 13, and a heating heat exchanger 14, and a refrigerant compressor 2.
1, an outdoor unit 2 having a refrigerant condenser 22, a circulation pump 23, and an outdoor heat exchanger 24, and a room temperature sensor 3 for detecting the room temperature.
And a temperature setter 4 for setting the room temperature, a temperature sensor 5,
A humidity sensor 6, a humidity setter 7, an indoor unit control circuit 8 and an outdoor unit control circuit 9 that control the convection fan 12, the refrigerant compressor 21, the circulation pump 23, and the like are provided, and cooling operation and dehumidifying operation are performed. And heating operation is possible.

The blower casing 11 has an inlet 112 for taking in the indoor air 111 and an outlet 114 for blowing out the conditioned air 113. The convection fan 12 whose energization is controlled by the indoor unit control circuit 8 is arranged in the blower casing 11 in the vicinity of the air outlet 114, and extends from the air inlet 112 to the air outlet 1.
The airflow toward 14 is generated. Refrigerant evaporator 13
Is placed in the blower casing 11 near the suction port 112, and cools the indoor air 111 taken in during the dehumidifying / heating operation. The heating heat exchanger 14 is arranged behind the refrigerant evaporator 13 and heats the air that has passed through the refrigerant evaporator 13.

The refrigerant compressor 21 is connected to the refrigerant evaporator 13 by a refrigerant return pipe 211 and compresses the sucked refrigerant and discharges it to the refrigerant condenser 22 during the cooling / dehumidifying operation. The number of revolutions of the refrigerant compressor 21 changes according to the amount of energization, and the refrigerant discharge amount can be increased or decreased in stages.

The refrigerant condenser 22 is provided downstream of the refrigerant compressor 21, and heat-exchanges the inflowing compressed refrigerant and the air blown by the electric fan 221 during the cooling / dehumidifying operation to condense the refrigerant. . Further, the condensed refrigerant is supplied to the refrigerant evaporator 13 via the refrigerant outward pipe 222.

The circulation pump 23 is connected to the heating heat exchanger 14 by a hot water return pipe 231, and the hot water flowing out of the heating heat exchanger 14 during the heating / dehumidifying operation is used for the outdoor heat exchanger 2.
Send to 4.

During the heating / dehumidifying operation, the outdoor heat exchanger 24 is heated by the gas burner 241 whose combustion capacity can be changed in a plurality of stages, and makes the circulating water supplied by the circulating pump 23 hot water. Further, the hot water is returned to the heating heat exchanger 14 via the hot water outgoing pipe 242.

In the present embodiment, the dehumidifying means is a refrigerating cycle C composed of the refrigerant evaporator 13, the refrigerant return pipe 211, the refrigerant compressor 21, the refrigerant condenser 22 and the refrigerant outgoing pipe 222, and for heating. Heat exchanger 14, hot water return pipe 231,
Circulation pump 23, outdoor heat exchanger 24, hot water outgoing pipe 24
2 and a hot water circuit H including a gas burner 241. When performing the dehumidifying operation, the taken-in room air 111 is cooled by the refrigerant evaporator 13, and the cooled air is heated by the heating heat exchanger 14, whereby the room air 1
Dehumidification is performed without lowering the temperature of 11. And
In the present embodiment, the dehumidifying means is in an operating state when the refrigerant compressor 21 and the electric fan 221 are operating, the circulation pump 23 is operating, and the gas burner 241 is burning. In addition, the dehumidifying means is in a stopped state when the refrigerant compressor 21 and the electric fan 221 are stopped, the circulation pump 23 is stopped, and the gas burner 241 is extinguished.

The room temperature sensor 3 is arranged at a predetermined position of the indoor unit 1 where the conditioned air 113 does not directly come into contact therewith, and sends an electric output having a value corresponding to the room temperature to the indoor unit control circuit 8.

The temperature setting device 4 for setting the room temperature is the indoor unit 1
And is electrically connected to the indoor unit control circuit 8.

Hot water outflow pipe 2 on the outlet side of the outdoor heat exchanger 24
The temperature sensor 5 arranged at 42 detects the temperature of the circulating hot water at the outlet of the outdoor heat exchanger 24, and sends an electric output having a value corresponding to the temperature of the circulating hot water to the indoor unit control circuit 8. .

The humidity sensor 6 is manufactured by film-forming a Y ₂ O ₃ -based moisture sensitive material on a pair of comb-shaped electrodes adhered on an insulating substrate, and the humidity sensor 6 of the indoor unit 1 which is not directly exposed to the conditioned air 113. An output between load resistance terminals corresponding to humidity, which consists of a well-known sensor body placed at a predetermined location, a load resistance electrically connected in series to the sensor body, and a DC power supply that supplies power to the sensor body via the load resistance. The voltage e is sent to the indoor unit control circuit 8.

The humidity setter 7 arranged on the indoor unit 1 side generates a reference voltage E ₁ corresponding to the set humidity and sends it to the indoor unit control circuit 8.

The indoor unit control circuit 8 sets the hot water temperature T, the burner ignition hot water temperature T ₁ , and the burner extinguishing temperature based on the set room temperature set by the temperature setter 4 and the detected room temperature detected by the room temperature sensor 3. The hot water temperature T ₂ is calculated, and the calculated hot water temperature data, detected circulating water temperature data, indoor humidity data, set humidity data, etc. are sent to the outdoor unit control circuit 9. The set hot water temperature T
Is calculated from the set room temperature and the detected room temperature, the burner ignition hot water temperature T ₁ is set to the set hot water temperature T-7 ° C., and the burner extinguishing hot water temperature T ₂
Is set temperature + 7 ° C. In addition, the control circuit 8 for the indoor unit
Is set to a predetermined time χ (3 minutes in the present embodiment), and the timer 80 that starts timing when the output voltage e sent from the humidity sensor 6 during dehumidification becomes equal to or less than the reference value E ₁ for the set humidity.
Equipped with.

The outdoor unit control circuit 9 uses the electric fan 221 and the circulation pump based on the hot water temperature data, the detected circulating water temperature data, the indoor humidity data, the set humidity data, etc. sent from the indoor unit control circuit 8. 23 energization control,
The rotation speed of the refrigerant compressor 21 and the combustion capacity of the gas burner 241 are controlled. In the dehumidifying operation, the outdoor unit control circuit 9 stops the operation of the dehumidifying means when the output voltage e sent by the humidity sensor 6 becomes equal to or lower than the reference value E ₁ for the set humidity during the operation of the dehumidifying means. The output voltage e sent from the humidity sensor 6 during the stop is the reference value E for the set humidity.
_When it becomes ₁ or more or when the predetermined time χ ends, the dehumidifying means is activated. The outdoor unit control circuit 9 determines that the detected circulating water temperature is the burner ignition hot water temperature T ₁ during the dehumidifying operation and the heating operation.
When it becomes the following, the gas burner 241 is put into a combustion state, and when the burner extinguishing water temperature T ₂ or more, the gas burner 241 is extinguished. Further, the outdoor unit control circuit 9 sends the combustion state of the gas burner 241, the operating states of the refrigerant compressor 21, the electric fan 221, and the circulation pump 23 to the indoor unit control circuit 8 as electric signals.

The operation switch 81 is a switch for instructing the operation start / stop of the air conditioner A. The operation mode switch 82 is a switch that selects an operation mode of the air conditioner A, and can select any one of a cooling operation, a heating operation, and a dehumidifying operation.

Next, the air conditioner during the dehumidifying operation
Operation of A (operation of dehumidifying means-part related to operation stop)
Based on the flowchart of FIG. 3 and the graph of FIG.
explain. The dehumidification operation is operated by the operation mode switch 82.
Then, in step S1, the dehumidifying means is activated.
State (state 91 in FIG. 4). In step S2, output power
Pressure e is reference value E₁It is judged whether or not the following, and e> E ₁
If (No), the operation of the dehumidifying means is continued, and e ≦
E₁If (Yes), the process proceeds to step S3. Su
At step S3, the dehumidifying means is stopped, and then step S4 is performed.
Proceed (states 92 and 95 in FIG. 4). In step S4, Thailand
Start Ma 80 and proceed to step S5 (state of FIG. 4
State 93, 96). In step S5, the output voltage e is the reference value
E₁It is judged whether or not the following, and e> E ₁If it is
(No) proceeds to step S6, where e ≦ E₁If it is
(Yes) returns to step S1. In step S6,
Determines whether the predetermined time χ of the timer 80 has elapsed
If not elapsed (No), return to step S5.
If it has elapsed, the process returns to step S1 (see FIG. 4).
State 94).

The air conditioner A of this embodiment has the following advantages. In the dehumidifying operation, the outdoor unit control circuit 9 stops the operation of the dehumidifying means and stops the timer 80 when the output voltage e sent by the humidity sensor 6 becomes equal to or lower than the reference value E ₁ for the set humidity during the operation of the dehumidifying means. When the output voltage e sent from the humidity sensor 6 becomes equal to or higher than the reference value E _{1 with} respect to the set humidity while the dehumidifying means is stopped and the dehumidifying means is stopped, the dehumidifying means is operated when the predetermined time χ (3 minutes) ends. In the present embodiment, by setting the length of the predetermined time χ of the timer 80 to 3 minutes, it is possible to bring the maximum humidity rising point (67%) when the dehumidifying means is restarted close to the set humidity (60%). In addition, the lowest point of humidity (53%) when the dehumidifying means is stopped from reactivating can be brought close to the set humidity (60%). Therefore, the air conditioner A can control the indoor humidity to be near the set humidity during the dehumidifying operation, have a small humidity fluctuation range, and are excellent in comfort.

The present invention includes the following embodiments in addition to the above embodiments. a. In the above embodiment, the length of the predetermined time χ of the timer 80 is set to 3 minutes, but the output voltage e sent from the humidity sensor 6 is the reference value E _{1 with} respect to the set humidity while the dehumidifying means is stopped.
The time may be increased or decreased as long as the time is set so that the timer 80 may time out before reaching. b. When the dehumidifying means is stopped, the convection fan 12 may be stopped or operated. c. The hot water circuit may be stopped in the operating state of the dehumidifying means.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a block diagram of the air conditioner.

FIG. 3 is a flowchart showing the operation of the air conditioner.

FIG. 4 is a graph showing a variation state of indoor humidity in the air conditioner.

FIG. 5 is a graph showing changes in indoor humidity in a conventional air conditioner.

[Explanation of symbols]

6 Humidity sensor 9 Outdoor unit control circuit (controller) 80 Timer A Air conditioner (dehumidifier equipped with humidity sensor) e Output voltage (electrical output) χ Predetermined time E ₁ Reference value

Claims (1)

[Claims] 1. A dehumidifying means for reducing the amount of water vapor in the indoor air, a humidity sensor for sending out an electric output according to the humidity of the indoor air, a predetermined time period is set, and the electric output is set during the operation of the dehumidifying means. A timer that starts timing when the humidity is below the reference value for the set humidity, and stops the operation of the dehumidifying means when the electric output is below the reference value for the set humidity during operation of the dehumidifying means, and while the dehumidifying means is stopped. A dehumidifying device provided with a humidity sensor, comprising a controller that operates the dehumidifying means when the electric output becomes equal to or higher than a reference value for a set humidity or when the predetermined time period ends.