JP4485447B2 - Humidity control method in air conditioner - Google Patents

Description

  The present invention relates to a humidity control method in an air conditioner, and more particularly to a humidity control method in an air conditioner including a refrigerator that can be switched to a plurality of output levels in a stepwise manner.

  2. Description of the Related Art Conventionally, as shown in FIG. 2, for example, as shown in FIG. 2, an air conditioner is provided with a housing 2 of an air conditioner 1, a refrigerator 3, a cooling coil 4 connected to the refrigerator 3, an electric heater 5, a humidity regulator 6, and an exhaust. A humidity detector 9 that measures the humidity of air sucked into the housing 2 through the suction port 8 by the fan 7 and the exhaust fan 7 is provided, and the humidity measured by the humidity detector 9 is a target set humidity. If it is less than the above, the steam generated by operating the steam generator 61 of the humidity controller 6 is jetted through the connecting pipe 62 and the steam discharge pipe 63 to humidify the air. When the target set humidity is exceeded, the air is dehumidified by cooling the air by the cooling coil 4 connected to the refrigerator 3 (see Patent Document 1).

By the way, in this air conditioner 1, when dehumidifying the air, since the refrigerator 3 is normally fully loaded, the electric heater 5 is used to maintain the air temperature at the target set temperature. There is a problem in that heating is required and energy consumption increases.
In addition, when the full load operation of the refrigerator 3 is performed, the dehumidification tends to be excessive, and coupled with the poor responsiveness of humidification, the output level of the dehumidification operation of the refrigerator 3 is frequently fluctuated. There has been a problem that the target set humidity cannot be maintained stably because of repeated or humidity control fluctuations (fluctuations).
JP 2002-364889 A

  In view of the problems of the conventional air conditioner described above, the present invention provides a dehumidifying operation of a refrigerator in humidity control in an air conditioner including a refrigerator that can be switched to a plurality of output levels in stages. The number of output level fluctuations is reduced, the humidity control fluctuation (shoulder width) is reduced, the target set humidity can be stably maintained, and the humidity control is energy-saving. An object of the present invention is to provide a humidity control method in an air conditioner that can be performed.

In order to achieve the above object, a humidity control method for an air conditioning apparatus according to the present invention comprises a refrigerator that can be switched to a plurality of output levels stepwise in accordance with a dehumidifying load and a temperature load, and a humidity regulator. In the humidity control method in the air conditioning apparatus that corrects the humidity and temperature by humidification by the heater and reheating by the electric heater, the output level of the refrigerator corresponding to the dehumidifying load is the same as the output level of the refrigerator corresponding to the temperature load If the output level of the refrigerator corresponding to the temperature load is larger than the reference level of humidity, the upper limit set value and the lower limit set value across the reference set value are used as a control range to control multiple humidity in stages. set the level, in correspondence with the output level of the said humidity control level the refrigerator, control the operation of the refrigerator by the humidity signal from the humidity detector And, in the combination of a particular level of the combination of the output levels of the control level and the refrigerator of the humidity, when the control level of humidity exceeds the allowable range, the humidity signal from the humidity detector other levels In addition to shifting to a combination, the humidity set value set to the control level of each humidity is automatically changed so that the reference set value of humidity at the transferred level becomes the target set humidity, and the changed humidity set preferences value humidity control based on the of, when the output level of the refrigerator corresponding to the thermal load from the output level of the corresponding refrigerator dehumidifying load is large, the output level of the refrigerator corresponding to the temperature load while operation of the refrigerator, wherein a line Ukoto humidity control.

  According to the humidity control method for an air conditioner of the present invention, the number of fluctuations in the output level of the dehumidifying operation of the refrigerator can be reduced, and the durability of the air conditioner can be improved. (Width) becomes smaller and the target set humidity can be maintained stably, and the degree of humidification by the electric heater and the humidity controller can be reduced, and humidity control can be performed with energy saving.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a humidity control method in an air conditioning apparatus of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of a humidity control method in the air conditioning apparatus of the present invention.
The humidity control method in this air conditioning apparatus is, for example, as shown in FIG. 2, a housing 3, a refrigerator 3, a cooling coil 4 connected to the refrigerator 3, an electric heater 5, and humidity, excluding the control unit and the like. Using an air conditioner 1 similar to the prior art provided with a humidity detector 9 and the like for measuring the humidity of the air sucked into the housing 2 through the suction port 8 by the adjuster 6, the exhaust fan 7, and the exhaust fan 7. Can be implemented.

  In this case, the refrigerator 3 provided in the air conditioner 1 is not particularly limited to a plurality of levels of output levels stepwise by an external signal by using, for example, an inverter-controlled refrigerator 3. However, for example, it can be switched to four levels of 0%, 50%, 80%, and 100%.

Next, a control procedure for performing humidity control using the air conditioner 1 equipped with the refrigerator 3 that can be switched to a plurality of output levels in stages is shown in FIG. The dehumidifying load is shown on the shaft.) When the control unit of the air conditioning apparatus 1 is used, the reference set values H1, H2, and H3 of the humidity and the reference set values are sandwiched between the upper set values B and D and the lower set values. A plurality of humidity control levels are set in stages with A and C as the control range, and the humidity control level is associated with the output level of the refrigerator 3 , that is, the dehumidification levels V1, V2, and V3. The operation of the refrigerator 3 is controlled by the humidity signal from the container 9, and the humidity control level is allowed in a specific combination of the humidity control level and the dehumidification levels V 1, V 2, V 3 of the refrigerator 3. Out of range When the humidity signal from the humidity detector 9 shifts to another level combination, the reference set value of the transferred level humidity is the target set humidity, which is not particularly limited. Then, the humidity setting value set to the control level of each humidity is automatically changed so that the humidity becomes 50%, and the humidity control is performed based on the changed humidity setting value.
Thereby, the frequency | count of the fluctuation | variation of the output level of the dehumidification driving | operation of the refrigerator 3 can be reduced, and while durability of the air conditioner 1 can be improved, the fluctuation | variation (vibration width) of humidity control becomes small and it is aimed. The set humidity can be stably maintained, and the degree of reheating by the electric heater 5 and humidification by the humidity adjuster 6 is reduced, so that humidity control can be performed with energy saving.

More specifically, as shown in FIG. 3A, as a humidity control level corresponding to the dehumidification level V1 of the refrigerator 3, for example, a humidity reference set value H1: 50% (hereinafter, numerical values related to humidity are The target set humidity is 50% and the humidity is controlled within a range of ± 5% as an example. However, the numerical value is not limited to this.) Upper limit set value B: 54% Lower limit set value A: 48%, differential a: 6%.
This humidity control level indicates the humidity at which the output level change (up (UP) / down (DOWN)) command of the refrigerator 3 is commanded. For example, when the point A is reached from high humidity, the refrigerator 3 The output level of the refrigerator 3 is lowered (DOWN) from 80% to 50%, and when the point B is reached from low humidity, the output level of the refrigerator 3 is increased (UP) from 50% to 80%.

Similarly, as a humidity control level corresponding to the dehumidifying level V2 of the refrigerator, humidity reference set value H2: 52%, upper limit set value D: 56%, lower limit set value C: 50%, differential a: 6%, Step b: 2%.
The control level of the humidity is such that the output level of the refrigerator 3 is lowered (DOWN) from 100% to 80% when reaching the point C from high humidity, and the output level of the refrigerator 3 when reaching the point D from low humidity. Is increased (UP) from 80% to 100%.

  Similarly, as the humidity control level corresponding to the dehumidifying level V3 of the refrigerator, the humidity reference set value H3 is 54%, and the differential a is 6%.

Next, the operation will be described.
First, when the air conditioner 1 is activated, the dehumidification level of the refrigerator 3 is switched by the humidity signal from the humidity detector 9 so that the target set humidity is 50%.

  In addition, when the humidity measured by the humidity detector 9 is less than the target set humidity 50%, the steam generated by operating the steam generator 61 of the humidity adjuster 6 is connected to the connecting pipe 62. Further, the air can be humidified by being ejected through the steam discharge pipe 63.

  Here, for example, when the output level of the refrigerator 3 shown in FIG. 3A is 50% at the dehumidification level V1, the dehumidification load increases due to the presence of a person entering the room, and the humidity starts to increase. When the point B is reached, the output level of the refrigerator 3 is increased (UP) from 50% to 80% of the dehumidification level V2.

Even if the output level of the refrigerator 3 shifts to the dehumidification level V2, the humidity set value set to the control level of each humidity is not changed immediately, and the humidity tends to decrease according to the humidity signal from the humidity detector 9. Further, when stabilized near the point C, the humidity control level corresponding to the dehumidification level V2 of the refrigerator is set to the humidity reference set value H2: 52% → 50%, as shown in FIG. Setting value D: 56% → 54%, lower limit setting value C: 50% → 48%, differential a: 6%, step b: 2% are automatically changed. At the same time, the humidity set values set at other humidity control levels are automatically changed. Then, humidity control is performed based on the changed set value of humidity.
On the other hand, if the humidity continues to increase even after shifting to the dehumidification level V2, the set value of the humidity set to the control level of each humidity is not changed, and when the point D is reached, the output of the refrigerator 3 The level is increased (UP) from 80% to 100% of the dehumidification level V3.

  Similarly, even if the output level of the refrigerator 3 shifts to the dehumidification level V3, the humidity set value set to the control level of each humidity is not changed immediately, and the humidity signal from the humidity detector 9 As shown in FIG. 3C, the humidity control level corresponding to the dehumidification level V3 of the refrigerator is changed to the reference value H3: 54% → The setting is automatically changed to 50% and differential a: 6%. At the same time, the humidity set values set at other humidity control levels are automatically changed. Then, humidity control is performed based on the changed set value of humidity.

  On the other hand, for example, when the dehumidification load decreases due to a person leaving the room and the humidity starts to decrease, the refrigerator is reversed as shown in FIG. 3-4 (FIG. 3-5). The dehumidifying level of 3 is shifted from V3 to V2 (and further shifted to V1 as necessary), and when the humidity tends to increase and becomes stable, the humidity setting value set for each humidity control level Is automatically changed, and humidity control is performed based on the changed humidity set value.

In the above description, only the humidity control method in the air conditioner has been described, but it is also possible to control the temperature.
For example, as shown in FIG. 4, the temperature control method is similar to the humidity control method described above, in which the temperature reference set values T0, T1, T2, T3, T4, T5 and A plurality of temperature control levels are set in stages with the upper limit set value and the lower limit set value as control ranges across the reference set value, and the control level of the temperature and the output levels L0, L0 ′, L1, The operation of the refrigerator 3 is controlled by a temperature signal from a temperature detector (not shown) in association with L1 ′, L2, and L3, and the temperature control level and the output level L0, L0 ′, L1 of the refrigerator 3 are controlled. , L1 ′, L2, and L3, when the temperature control level exceeds an allowable range, the combination of other levels is detected by a temperature signal from a temperature detector (not shown). If you plan to migrate In both cases, the temperature setting value set for each temperature control level is automatically changed so that the reference temperature setting value for the transferred level becomes the target setting temperature, and the changed temperature setting value is used as a reference. (See, for example, Japanese Patent Laid-Open Nos. 2002-366233 and 2003-316448, if necessary).
In this case, the output level of the refrigerator 3 is adjusted to the larger one of the dehumidifying load and the heat load (temperature load) , and the operation of the refrigerator 3 is performed. The temperature or humidity is corrected by humidification.

  As mentioned above, although the humidity control method in the air conditioner of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, In the range which does not deviate from the meaning, it is appropriate. The configuration can be changed.

  The humidity control method in the air conditioning apparatus of the present invention reduces the number of fluctuations in the output level of the dehumidifying operation of the refrigerator, and reduces the fluctuation (vibration width) of the humidity control to a target set humidity Can be stably maintained, and the humidity control can be performed with energy saving, so that it can be switched to a plurality of output levels step by step such as an inverter control method. It can use suitably for the humidity control method of the air conditioner provided with the refrigerating machine.

It is explanatory drawing which shows one Example of the humidity control method in the air conditioning apparatus of this invention. It is explanatory drawing which shows an example of an air conditioning apparatus. It is explanatory drawing of the control process (initial state) of the humidity control method in the air conditioner of this invention. It is explanatory drawing of the control process of the humidity control method in the air conditioner of this invention (after the automatic change when the dehumidification level of a refrigerator is changed from V1-> V2 and it is stabilized at V2). It is explanatory drawing of the control process of the humidity control method in the air conditioner of this invention (after the automatic change when the dehumidification level of a refrigerator is changed to V1-> V2-> V3 and is stabilized at V3). It is explanatory drawing of the control process of the humidity control method in the air conditioner of this invention (after the automatic change when the dehumidification level of a refrigerator is changed from V3-> V2 and is stabilized at V2). It is explanatory drawing of the control process of the humidity control method in the air conditioner of this invention (after the automatic change when the dehumidification level of a refrigerator is changed to V3-> V2-> V1, and is stabilized at V1). It is explanatory drawing which shows an example of the temperature control method in an air conditioning apparatus.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Housing 3 Refrigerator 4 Cooling coil 5 Electric heater 6 Humidity regulator 61 Steam generator 62 Connection pipe 63 Steam exhaust pipe 7 Exhaust fan 8 Suction port 9 Humidity detector

Claims (1)

Air that has a refrigerator that can be switched to multiple output levels in stages according to the dehumidifying load and temperature load, and that corrects humidity and temperature by humidification by a humidity controller and reheating by an electric heater. In the humidity control method in the adjusting device, if the output level of the refrigerator corresponding to the dehumidifying load is the same as the output level of the refrigerator corresponding to the temperature load or greater than the output level of the refrigerator corresponding to the temperature load, the humidity A plurality of humidity control levels in stages with the upper limit set value and the lower limit set value as control ranges with the reference set value interposed therebetween, and the humidity control level and the output level of the refrigerator in association, and it controls the operation of the refrigerator by the humidity signal from the humidity detector, especially of the combination of the output levels of the control level and the refrigerator of the humidity When the humidity control level exceeds the allowable range in the combination of levels, the humidity signal from the humidity detector is used to shift to another level combination and the reference set value for the humidity of the shifted level is the target. automatically changing the humidity set value set in the control level of each humidity so that the set humidity to, have rows humidity control based on the humidity set value the modified, corresponding to the dehumidifying load refrigerator when the output level of the refrigerator corresponding to the thermal load from the output level is high, air conditioning, characterized in row Ukoto humidity control while operation of the refrigerator by the output level of the refrigerator corresponding to the temperature load Humidity control method in apparatus.

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