JP5371282B2 - Air conditioning control device and air conditioning control method - Google Patents

Description

  The present invention relates to an air conditioning control device and an air conditioning control method for controlling the temperature and humidity of air supply from an air conditioner to an air-conditioned space.

  Conventionally, not only the temperature of the air supply from the air conditioner to the air-conditioned space but also the humidity of the air supply is controlled. In this case, there are humidification control and dehumidification control as the humidity control of the supply air.

  For example, in the air conditioning control system disclosed in Patent Document 1, in order to prevent dehumidification control or humming of humidification control, the dew point temperature when the relative humidity setting upper limit value and the temperature setting lower limit value are set is determined as the dew point permitting indoor dew point temperature. The dew point temperature when the relative humidity setting lower limit value and temperature setting upper limit value are set as the set value, and the indoor dew point temperature measured value exceeds the indoor dew point temperature set value for dehumidification permission. On the other hand, the dehumidification is performed when the measured value of the indoor dew point temperature falls below the set value of the indoor dew point temperature for permitting humidification.

  When performing humidification control, the humidification valve is opened, water vapor is added to the passing air, and the amount of water contained in the indoor air supply is increased. This humidification by adding water vapor is called water humidification. When water evaporates, it takes heat away from the surrounding air. Therefore, water humidification has an effect of cooling the passing air (humidification cooling effect).

JP 2000-11124 A

  As described above, water humidification has a humidification cooling effect, and when the air conditioner is cooling (in a supply air supply mode using cold heat), the energy of the air conditioner is reduced. Work in the direction. However, when the air conditioner is heating (when it is in the supply mode of supply air using warm heat), it works in the direction of increasing the energy of the air conditioner. That is, when the air conditioner is heating, the warm air is cooled, and extra energy is required.

  The present invention has been made in order to solve such a problem. The object of the present invention is to promote energy reduction when the air conditioner is cooling, and the air conditioner is heated. It is in providing the air-conditioning control apparatus and air-conditioning control method which can suppress the increase in energy in case of being.

In order to achieve such an object, the present invention provides an air supply control mode for controlling the temperature and humidity of air supply from an air conditioner to an air-conditioned space. located in either whether in supply mode of supply air by using the heat, and the air supply supply mode determining means for determining whether there supply mode of the supply air using a non cold / heat, the air-conditioned space to Humidity setting value determining means for setting a higher humidity value as a cooling humidity setting value and a lower humidity as a heating humidity setting value with respect to a reference humidity setting value defined for If it is determined that the air conditioner is in the supply air supply mode using cold heat, the air conditioner uses the heat by the supply air supply mode determination means with the cooling humidity setting value as the actual humidity setting value. It is determined that the air supply mode is If it is determined that the supply air supply mode in the case and using a non-cold / heat is, as a heating time of the humidity set value actual humidity set value, and the actual humidity of the supply air from the air conditioner Humidity control means for adjusting the amount of humidified water to be included as water vapor in the air passing through the air conditioner is provided so that the humidity set value matches. The present invention can be realized not as an air conditioning control device but also as an air conditioning control method.

According to the present invention, when the air conditioner is in the supply air supply mode using cold heat, that is, when the air conditioner is cooling, the humidity value is higher than the reference humidity setting value. Humidified water that is included as water vapor in the air that passes through the air conditioner so that the humidity of the supply air from the air conditioner matches the actual humidity setting value, with the specified humidity setting value for cooling as the actual humidity setting value. The amount is adjusted . Thereby, a humidification cooling effect is heightened and reduction of energy when an air conditioner is cooling is promoted.

Further, according to the present invention, when the air conditioner is in the supply air supply mode using heat, that is, when the air conditioner is heating, the humidity is lower than the reference humidity set value. Humidity to be included as water vapor in the air passing through the air conditioner so that the humidity of the supply air from the air conditioner matches the actual humidity setting value, with the heating humidity set value determined as the value as the actual humidity set value The amount of water is adjusted . Thereby, a humidification cooling effect is lowered and an increase in energy when the air conditioner is heating is suppressed.

In the present invention, the determination of the supply mode of the air supply of the air conditioner (determination of whether cooling, heating, or other than cooling / heating ) is performed in the cold water supply passage and the hot water supply passage provided to the air conditioner. It is possible to carry out based on the opening degree of the valve and the hot water valve. For example, if the opening degree of the cold water valve is 0% or more, it is determined that the air conditioner is cooling. If the opening degree of the hot water valve is 0% or more, the air conditioner is heating. If the opening degree of the cold water valve and the hot water valve are both 0%, it is determined that the state is other than cooling / heating. The determination of whether the air conditioner is cooled or heated is not limited to that based on the opening degree of the cold water valve or the hot water valve. For example, the determination may be made from a mode signal indicating cooling / heating. And so on.

According to the present invention, when the air conditioner is in a supply mode of supply air using cold (when the air conditioner is cooling), the humidity value is set higher than the reference humidity setting value. Using the cooling humidity setting value as the actual humidity setting value , the amount of humidified water to be included as water vapor in the air passing through the air conditioner so that the humidity of the supply air from the air conditioner matches the actual humidity setting value. If the air conditioner is in supply air supply mode using warm heat (when the air conditioner is heating), the heating is set as a lower humidity value than the reference humidity setting value Adjusting the amount of humidified water to be included as water vapor in the air that passes through the air conditioner so that the humidity of the air supply from the air conditioner matches the actual humidity setting value with the hourly humidity set value as the actual humidity set value So that the air conditioner is cooling As well as promote the reduction of energy coupling, so the increase in energy when the air conditioner is performing heating can be suppressed.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is an instrumentation diagram showing an embodiment of an air conditioning control system using an air conditioning control device according to the present invention.

  In the figure, 1 is an air conditioner, 2 is an air-conditioned space that receives supply of air supply from the air conditioner 1, 3 is an air-conditioning control device according to the present invention, and 4 is an air supply to the air-conditioned space 2. A supply air temperature sensor for detecting temperature, 5 is a cold water valve, 6 is a hot water valve, and 7 is a humidification valve. The air-conditioned space 2 is provided with a humidity setting device 8, a temperature setting device 9, a humidity sensor 10, and a temperature sensor 11.

  The air conditioner 1 includes a cooling coil (cooling heat exchanger) 1-1, a heating coil (heating heat exchanger) 1-2, a humidifier 1-3, and a blower 1-4. . The cold water valve 5 is provided in the cold water supply passage to the cooling coil 1-1. The hot water valve 6 is provided in a hot water supply passage to the heating coil 1-2. The humidifying valve 7 is provided in the humidifying water supply passage to the humidifier 1-3.

The humidifier 1-3 is a vaporizing humidifier, and increases the amount of water contained in the passing air by evaporating water, that is, by using water vapor . At this time, since the heat is taken away from the surrounding air, the temperature of the passing air decreases according to the evaporated water.

  In this air conditioning control system, the humidity setting value for the air-conditioned space 2 from the humidity setting device 8 is set in the air conditioning control device 3 as the indoor humidity setting value (reference humidity setting value) Hsp. The temperature setting value for the air-conditioned space 2 is set as the indoor temperature setting value tsp. Further, the air conditioning control device 3 includes an actual measurement value Hpv of humidity (indoor humidity) in the air-conditioned space 2 detected by the humidity sensor 10 and a temperature (indoor temperature) in the air-conditioned space 2 detected by the temperature sensor 11. An actual measurement value tpv and an actual measurement value tSpv of the temperature (supply temperature) of the supply air to the air-conditioned space 2 detected by the supply air temperature sensor 4 are given.

  FIG. 2 shows an outline of the hardware configuration of the air conditioning control device 3. In the figure, 3-1 is a CPU, 3-2 is a RAM, 3-3 is a ROM, 3-4 is a storage device such as a hard disk, and 3-5 to 3-7 are interfaces. The CPU 3-1 operates in accordance with a program stored in the ROM 3-3 or the storage device 3-4 while accessing the RAM 3-2.

  The storage device 3-4 stores a supply air temperature / humidity control program for controlling the temperature and humidity of the supply air as a program unique to the present embodiment. This supply temperature / humidity control program is provided in a state of being recorded on a recording medium such as a CD-ROM, for example, and is read from the recording medium and installed in the storage device 3-4.

FIG. 3 shows a functional block diagram of the main part of the air conditioning control device 3. The air-conditioning control device 3 uses the warm air to determine whether the air conditioner 1 is in the air supply mode using cold heat based on the opening θ1 of the cold water valve 5 and the open angle θ2 of the hot water valve 6. The supply air supply mode determination unit 3A for determining whether or not the current supply mode is set, and the reference humidity set value Hsp determined for the air-conditioned space 2, the higher humidity value is lower than the cooling humidity set value CHsp. When the air conditioner 1 is determined to be in the air supply mode using cold heat by the humidity setting value determining unit 3B that determines the humidity value of the air as the heating humidity setting value HHsp and the air supply mode determination unit 3A When the cooling air humidity setting value CHsp is set as the actual humidity setting value, when the air supply mode determination unit 3A determines that the air conditioner 1 is in the supply mode of the supply air using warm heat, and other than cooling / heating Using the supply air supply mode When it is determined that the humidity is within the range, a humidity control unit 3C that controls the opening degree θ3 of the humidifying valve 7 using the heating humidity setting value HHsp as the actual humidity setting value is provided. In the air conditioning control device 3, the air supply mode determination unit 3A, the humidity set value determination unit 3B, and the humidity control unit 3C are realized as processing functions of the CPU 3-1 (FIG. 2).

  Hereinafter, the processing operation executed by the CPU 3-1 in accordance with the supply air temperature / humidity control program stored in the storage device 3-4 will be described separately for supply air temperature control and supply air humidity control.

(Supply air temperature control)
When performing cooling, the CPU 3-1 acquires the measured value tpv of the room temperature from the temperature sensor 11 and the set value tsp of the room temperature from the temperature setter 9, and sets the measured value tpv of the room temperature and the room temperature. The opening degree θ1 of the cold water valve 5 is controlled so that the value tsp matches. Thereby, the quantity (the quantity of cold heat) of the cold water to the cooling coil 1-1 of the air conditioner 1 is adjusted, and the temperature of the air supply to the air-conditioned space 2 is controlled. A state in which cold water is supplied to the air conditioner 1 for cooling, that is, a state in which a supply air supply mode using cold heat is in effect is a state in which the air conditioner 1 is cooling.

  When performing heating, the CPU 3-1 acquires the measured value tpv of the room temperature from the temperature sensor 11 and the set value tsp of the room temperature from the temperature setter 9, and sets the measured value tpv of the room temperature and the room temperature. The opening degree θ2 of the hot water valve 6 is controlled so that the value tsp matches. As a result, the amount of hot water (the amount of heat) to the heating coil 1-2 of the air conditioner 1 is adjusted, and the temperature of the supply air to the air-conditioned space 2 is controlled. A state in which warm water is supplied to the air conditioner 1 to perform heating, that is, a state in a supply mode of supply air using warm heat is a state in which the air conditioner 1 is heating.

[Air supply humidity control]
The CPU 3-1 acquires the indoor humidity setting value (reference humidity setting value) Hsp from the humidity setting device 8 (FIG. 4: step S 101), and cools the humidity value higher than the reference humidity setting value Hsp. The time humidity set value CHsp is set (step S102), and the lower humidity value is set as the heating humidity set value HHsp (step S103). For example, when the reference humidity setting value Hsp is 45% RH, the cooling humidity setting value CHsp is determined as 50% RH, and the heating humidity setting value HHsp is determined as 40% RH.

  And the measured value Hpv of the indoor humidity from the humidity sensor 10 is acquired (step S104), and it is judged whether the air conditioner 1 is cooling or heating from the current control state of the air conditioner 1. (Step S105). In this embodiment, if the opening degree θ1 of the cold water valve 5 is 0% or more, it is determined that the air conditioner 1 is in a cooling state, and the opening degree θ2 of the hot water valve 6 is 0% or more. For example, it is determined that the air conditioner 1 is in a heating state. When the opening θ1 of the cold water valve 5 and the opening θ2 of the hot water valve 6 are both 0%, it is determined that the state is other than cooling / heating.

  If the CPU 3-1 determines in step S105 that the air conditioner 1 is in a cooling state, the CPU sets the cooling humidity set value CHsp determined in step S102 as the actual humidity set value (step S106), and the room humidity. Of the humidification valve 7 is controlled so that the actual measurement value Hpv of the same and the humidity setting value CHsp during cooling coincide with each other (step S109). Thereby, the quantity of the humidification water to the humidifier 1-3 of the air conditioner 1 is adjusted, and the quantity of the moisture contained in the supply air to the air-conditioned space 2 is controlled.

  At this time, since the humidity setting value CHsp during cooling is higher than the reference humidity setting value Hsp, the humidification cooling effect by water humidification is enhanced, and the energy is reduced when the air conditioner 1 is cooling. Is promoted. In addition, since humans have a dull sense of humidity, even if the actual humidity setting value is set slightly higher than the reference humidity setting value Hsp, the person does not feel much discomfort.

  If the CPU 3-1 determines in step S105 that the air conditioner 1 is in the heating state, the heating humidity setting value HHsp determined in step S103 is set as the actual humidity setting value (step S107), and the room humidity The opening degree θ3 of the humidifying valve 7 is controlled so that the actual measured value Hpv and the heating humidity set value HHsp coincide (step S109). Thereby, the quantity of the humidification water to the humidifier 1-3 of the air conditioner 1 is adjusted, and the quantity of the moisture contained in the supply air to the air-conditioned space 2 is controlled.

  At this time, since the heating humidity set value HHsp is lower than the reference humidity set value Hsp, the humidification cooling effect by water humidification is reduced, and the energy increases when the air conditioner 1 is heating. Is suppressed. In addition, since a person has a dull sense of humidity, even if the humidity setting value is set a little lower than the reference humidity setting value Hsp, the person does not feel much discomfort.

When determining that the air conditioner 1 is in a state other than cooling / heating in step S105, the CPU 3-1 sets the heating humidity setting value HHsp determined in step S103 as the actual humidity setting value (step S108), and the room humidity. The opening degree θ3 of the humidifying valve 7 is controlled so that the actual measured value Hpv matches the actual humidity set value (heating humidity set value HHsp) . Thereby, the quantity of the humidification water to the humidifier 1-3 of the air conditioner 1 is adjusted, and the quantity of the moisture contained in the supply air to the air-conditioned space 2 is controlled. In this case, since the humidity of the air-conditioned space 2 is adjusted to the heating humidity set value HHsp, the amount of humidified water is reduced, and the water bill can be reduced.

  In step S105, when the current control status of the air conditioner 1 is determined from the opening degree of the cold water valve 5 or the hot water valve 6, the duration may be included in the condition. For example, when the opening degree θ1 of the cold water valve 5 is 0% or more for 10 minutes or more, it is determined that the air conditioner 1 is in a cooling state.

  In step S105, it is determined from the mode signal indicating the cooling / heating of the air conditioner 1 that cooling is performed during cooling, and heating is performed during heating, or cooling is performed when the cooling PID output of the control device 3 is> 0. It may be determined that the heating PID output is> 0 and heating is performed, or the air conditioning unit mixing point temperature is lower than the supply air temperature, and the air conditioning unit mixing point temperature is higher than the supply air temperature.

  Moreover, in embodiment shown in FIG. 1, although the type (double coil air conditioner) which has two coils, the cooling coil 1-1 and the heating coil 1-2, as the air conditioner 1 was demonstrated, a cooling coil and a heating coil When using a type of air conditioner (single-coil air conditioner) that shares the same temperature, the water supply temperature to the air conditioner is detected, and cooling is performed when the water supply temperature is <12 ° C and the hot / cold water valve> 0% The case where the water supply temperature> 30 ° C. and the cold / hot water valve> 0% may be determined as heating.

  In the embodiment shown in FIG. 1, the application example to the air conditioning control device 3 attached to the air conditioner 1 has been described. However, the air supply control mode 3 is a device located above the air conditioning control device 3. A determination may be made and the humidity setting value used in the air conditioning control device 3 (existing air conditioning control device) may be rewritten. In this case, the air conditioning control device according to the present invention is configured by the device located at the upper level and the existing air conditioning control device. By doing in this way, it becomes possible to aim at energy saving operation, without requiring any change of the existing air conditioning control device.

1 is an instrumentation diagram showing an embodiment of an air conditioning control system using an air conditioning control device according to the present invention. It is a figure which shows the outline of the hardware constitutions of the air-conditioning control apparatus in this air-conditioning control system. It is a functional block diagram of the principal part of this air-conditioning control apparatus. It is a flowchart which shows the processing operation in the case of supply air humidity control which CPU of this air-conditioning control apparatus performs.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Air conditioner, 2 ... Air-conditioned space (indoor) 1-1 ... Cooling coil, 1-2 ... Heating coil, 1-3 ... Humidifier, 1-4 ... Blower, 3 ... Air-conditioning control apparatus, 3-1 ... CPU, 3-2 ... RAM, 3-3 ... ROM, 3-4 ... storage device, 3-5-3-7 ... interface, 3A ... air supply mode determination unit, 3B ... humidity set value determination unit, 3C DESCRIPTION OF SYMBOLS ... Humidity control part, 4 ... Supply air temperature sensor, 5 ... Cold water valve, 6 ... Hot water valve, 7 ... Humidification valve, 8 ... Humidity setter, 9 ... Temperature setter, 10 ... Humidity sensor, 11 ... Temperature sensor.

Claims (4)

In the air conditioning control device that controls the temperature and humidity of the air supply from the air conditioner to the air-conditioned space,
Whether the air conditioner is in a supply air supply mode using cold, in a supply air supply mode using warm heat, or in a supply air supply mode using something other than cold / hot Supply air supply mode determination means for determining whether or not
Humidity setting value determination means for setting a higher humidity value as a cooling humidity setting value and a lower humidity value as a heating humidity setting value with respect to a reference humidity setting value determined for the air-conditioned space;
When it is determined by the supply air supply mode determination means that the air conditioner is in a supply air supply mode using cold heat, the cooling supply humidity setting value is set as an actual humidity setting value, and the supply air supply mode When it is determined by the determining means that the air conditioner is in the supply mode of supply air using warm heat and when it is determined that the air conditioner is in the supply mode of supply air using other than the cold / heat, Humidification water to be included as water vapor in the air that passes through the air conditioner so that the humidity of the supply air from the air conditioner and the actual humidity setting value coincide with the humidity setting value during heating as the actual humidity set value An air conditioning control device comprising: humidity control means for adjusting the amount. In the air-conditioning control device according to claim 1,
The air supply mode determination means includes
The air-conditioning control apparatus, wherein the supply mode of the supply air is determined based on the opening degree of the cold water valve and the hot water valve provided in the cold water supply passage and the hot water supply passage to the air conditioner. In the air conditioning control method for controlling the temperature and humidity of the air supply from the air conditioner to the air-conditioned space,
Whether the air conditioner is in a supply air supply mode using cold, in a supply air supply mode using warm heat, or in a supply air supply mode using something other than cold / hot An air supply mode determination step for determining whether or not
Humidity setting value determination step for setting a higher humidity value as a cooling humidity setting value and a lower humidity value as a heating humidity setting value with respect to a reference humidity setting value determined for the air-conditioned space;
When it is determined in the supply air supply mode determination step that the air conditioner is in a supply air supply mode using cold heat, the cooling supply humidity setting value is set as an actual humidity setting value, and the supply air supply mode When it is determined by the determination step that the air conditioner is in a supply air supply mode using heat and when it is determined that the air conditioner is in a supply air supply mode using other than the cold / heat, Humidification water to be included as water vapor in the air that passes through the air conditioner so that the humidity of the supply air from the air conditioner and the actual humidity setting value coincide with the humidity setting value during heating as the actual humidity set value And a humidity control step of adjusting the amount. In the air-conditioning control method according to claim 3,
The air supply mode determination step includes
An air conditioning control method, comprising: determining a supply mode of the supply air based on an opening degree of a cold water valve and a hot water valve provided in a cold water supply passage and a hot water supply passage to the air conditioner.

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