JP3474739B2 - Temperature and humidity controller for air conditioner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature / humidity controller for an air conditioner for controlling the temperature / humidity of an air conditioner which supplies conditioned air whose intake air is adjusted to a preset temperature / humidity. It is suitable for use when supplying air-conditioned air to a coating booth or the like where it is desired to maintain a constant value and to perform coating under the same conditions.

[0002]

2. Description of the Related Art FIG. 3 shows an existing air conditioner 1 for adjusting the temperature and humidity of the outside air taken in to a predetermined temperature and humidity set in advance. An outside air intake 2 is formed at one end and the other end is formed. The conditioned air supply port 3 is formed on the side. A main heating device 4 having a variable heating capacity such as a burner is used as a temperature / humidity adjuster for adjusting the temperature / humidity of the outside air in the air flow path extending from the outside air intake 2 to the air conditioning air supply port 3. Adiabatic humidifier 5 with variable humidification capacity such as gas-liquid contactor, Cooling device 6 with variable cooling capacity such as cooling coil, Auxiliary heating device 7 called reheater capable of fine adjustment of heating capacity, Isothermal humidification such as steam discharge pipe The auxiliary humidifying device 8 for performing the above is arranged in that order. A roll filter F for removing dust in the air is provided between the main heating device 4 and the adiabatic humidifying device 5, and a blast fan 9 for sending conditioned air to the conditioned air supply port 3 is provided.
Is provided. Further, a temperature sensor T ₂ arranged on the outlet side of the adiabatic humidification device 5 and a temperature / humidity sensor TH ₂ arranged on the conditioned air supply port 3 are connected to the control device 40, and are connected by the temperature sensor T _2. The temperature of the air that has passed through the main heating device 4 and the adiabatic humidification device 5 is detected, and the temperature / humidity sensor TH is detected.
₂ is configured to detect the temperature and humidity of the conditioned air at state points. Then, the adiabatic humidifier 5 is operated at full power so that the relative humidity of the air passing through it becomes 100%, and in the controller 40, the capacity of the main heating device 4 is determined by the detection signal of the temperature sensor T ₂ , and The cooling / humidifying / heating capacities of the cooling device 6, the auxiliary heating device 7 and the auxiliary humidifying device 7 are feedback-controlled based on the detection signal of the temperature / humidity sensor TH ₂ .

In this case, when the outside air at the state point A ₀ shown in FIG. 4 is temperature-controlled / humidified, the heating operation D ₁ in the main heating device 4, the humidification operation D ₂ in the adiabatic humidification device 5, and the cooling device 6 are performed. After passing through the cooling operation (dehumidifying operation) D _{3 in} the above and the auxiliary heating device D ₄ in the auxiliary heating device 7, the state point P ₀ of the conditioned air is reached. At this time, since the temperature detected by the temperature sensor T ₂ is the temperature after the end of the humidifying operation, it becomes a state point on the saturated vapor line,
When the temperature is lower than the dew point t _{0 at} the state point P ₀ of the conditioned air, the heating capacity of the main heating device 4 is increased, and when it is higher than the dew point temperature t ₀ , the heating capacity is reduced. Further, even if the heating capacity of the main heating device 4 is set to 0, if it is still higher than the dew point temperature t ₀ , the cooling device 6 performs cooling (dehumidification). Then, the cooling capacity of the cooling device 6 is adjusted so that the absolute humidity detected by the temperature / humidity sensor TH ₂ becomes equal to the absolute humidity of the state point P ₀ , and the temperature detected by the temperature / humidity sensor 60 is changed to the state point P _0. The heating capacity of the auxiliary heating device 7 is adjusted so as to be equal to the temperature of 1., and when the cooling capacity of the cooling device 6 is reduced to the minimum and the humidity is low, the auxiliary humidifying device 8 adjusts.

However, if such control is performed, in most cases, the adiabatic humidification device 5 must be operated at full power, and at least one of the main heating device 4 and the cooling device 6 and the auxiliary heating device 7 must be operated. For example, since the temperature / humidity cannot be adjusted to the target state point P ₀ of the conditioned air, and wasteful operations such as dehumidification after humidification and heating after cooling are involved, much energy is wasted. However, there is a problem that running costs increase.

Therefore, the capacities of the main heating device 4, the adiabatic humidifying device 5, the cooling device 6, the auxiliary heating device 7, and the auxiliary humidifying device 8 may be individually controlled based on the respective outlet temperatures and outlet humidities. Thus, it is possible to perform control with relatively little waste. FIG. 5 shows a capacity setting device 10 that performs such control.
1 shows an air conditioner 1 including a main heating capacity control device 11 that feedback-controls a heating capacity of a main heating device 4, and a humidification capacity control device 12 that feedback-controls a humidification capacity of an adiabatic humidification device 5. And a cooling capacity control device 1 for feedback controlling the cooling capacity of the cooling device 6.
3, an auxiliary heating capacity controller 14 that feedback-controls the heating capacity of the auxiliary heating device 7, and an auxiliary humidification capacity controller 15 that feedback-controls the humidification capacity of the auxiliary humidifier 8.

Then, the respective capacity control devices 11 to 15
Is disposed on the input side of the main heating device 4, the adiabatic humidifying device 5, the cooling device 6, the temperature sensors T _{1 to} T ₄ provided on the outlet side of the auxiliary heating device 7, and the conditioned air supply port 3. The temperature / humidity sensor TH ₂ is connected, and the main heating device 4, adiabatic humidifying device 5, cooling device 6, auxiliary heating device 7, and auxiliary humidifying device 8 are connected to the output side thereof. According to this, by adjusting the volume of each such outlet temperature of the respective detected by the temperature sensors T ₁ through T ₄ is equal to the target outlet temperature set in advance, also detected by the temperature-humidity sensor TH ₂ Since the outlet humidity of the auxiliary humidifying device 8 is finely adjusted based on the humidity, the conditioned air whose temperature / humidity is adjusted to a predetermined temperature / humidity can be obtained.

[0007]

However, in order to set the temperature and humidity at the outlet of the air conditioner 1 to the preset target temperature and humidity, the outlet temperatures of the individual temperature and humidity regulators 4 to 7 should be set at any desired number of times. Kika is not something that is simply determined, and even if the target temperature and humidity are constant, if the temperature and humidity of the outside air changes, it will change from moment to moment.

For example, in the psychrometric chart shown in FIG.
When the outside air state point X ₁ is lower in temperature and absolute humidity than the target state point P ₀ of the conditioned air, after heating by the main heating device 4,
An adiabatic humidification operation is performed by the adiabatic humidifier 5, and at this time, the target outlet temperature of the main heating device 4 is t ₁ . Here, when the humidity of the outside air rises and the outside air state point becomes X ₂ , the target outlet temperature of the main heating device 4 drops to t ₂ , but
When the humidity decreases and the outside air state point becomes X ₃ , the target outlet temperature of the main heating device 4 rises to t ₃ . The target outlet temperature t ₁ of the main heating device 4 does not change if the absolute humidity does not change even if the temperature of the outside air rises / falls as shown by the state point X ₄ .

When the outside air state point X ₅ has a temperature higher than the target state point P ₀ of the conditioned air and the absolute humidity is low, an operation of performing adiabatic humidification with the adiabatic humidifier 5 and then cooling with a cooling device 6 is performed. At this time, the target outlet temperature of the adiabatic humidifier 5 is t ₅ . Here, when the outside air temperature does not change and the absolute humidity rises and the outside air state point becomes X ₆ , the outlet temperature of the adiabatic humidifier 5 rises to t ₆ , and the absolute humidity decreases and the outside air state point becomes When it becomes X ₇ , the outlet temperature of the adiabatic humidifier 5 drops to t ₇ .

As described above, each target outlet temperature changes every moment due to the change in temperature and humidity of the outside air, and moreover, the relationship between the outside air temperature and humidity and the target outlet temperature is complicated.
It was difficult to set the target outlet temperature in each of the capacity control devices 11 to 15, and it was difficult to perform stable control.

Therefore, not only the temperature and humidity of the conditioned air is monitored by the temperature / humidity sensor TH ₂ provided in the conditioned air supply port 3 and the capacity of the auxiliary humidifier 8 is controlled to adjust the humidity. The target outlet temperatures of the control devices 11 to 15 can be reset, but the temperature and humidity cannot change independently,
For example, when humidified by the adiabatic humidifier 5, the temperature rises at the same time as the humidity rises, and when cooled by the cooling device 6, the temperature falls and at the same time the humidity falls or does not fall.

Therefore, even if the temperature and humidity of the conditioned air is monitored by the temperature and humidity sensor TH ₂ provided in the conditioned air supply port 3, the target outlet temperatures of the temperature and humidity regulators 4 to 7 can be accurately set. It is difficult and the time lag until the temperature / humidity sensor TH ₂ detects that the temperature / humidity of the conditioned air has changed when the capacities of the temperature / humidity regulators 4 to 7 are changed is large, so the steady state is settled. However, there is a problem that it takes time to perform stable and responsive control, which results in energy loss and running cost increase.

Furthermore, one of the temperature and humidity adjusters 4
If any of the above items 7 to 7 fails, the temperature and humidity of the conditioned air cannot be kept constant, so that the coating cannot be performed under certain conditions, and the coating quality will deteriorate. And in this case,
Even if the temperature / humidity of the conditioned air sent from the conditioned air supply port 3 is monitored, it cannot be determined which of the temperature / humidity regulators 4 to 7 has the abnormality, and therefore it takes time to restore. There was a problem.

Therefore, according to the present invention, when feedback control is performed on each temperature / humidity regulator to obtain conditioned air in which the outside air is adjusted to a predetermined temperature / humidity, stable and responsive temperature / humidity control can be performed. As a result, it is a technical subject to save energy, reduce the running cost, and detect any abnormality in any of the temperature and humidity regulators as soon as possible.

[0015]

In order to solve this problem, the present invention provides a main heating device having a variable heating capacity as a temperature / humidity adjuster for adjusting the temperature of outside air taken in to a preset temperature / humidity. , An adiabatic humidifier with a variable humidification capacity, a cooling device with a variable cooling capacity, and at least one temperature / humidity adjuster of an auxiliary heating device capable of finely adjusting the heating capacity,
A temperature sensor that measures the temperature of the air that has passed through each temperature / humidity adjuster is provided at the outlet of each temperature / humidity adjuster, and the outlet temperature detected by each temperature sensor and each preset temperature / humidity adjustment A temperature / humidity controller for an air conditioner that performs temperature / humidity control of an air conditioner equipped with a capacity controller that increases or decreases the capacity of each temperature / humidity regulator by comparing the target outlet temperatures of the air conditioners,
A temperature / humidity sensor that detects the temperature and humidity of the outside air, and an air diagram table that stores the air diagram in advance, and an upper limit state point that is determined by the upper limit temperature and upper limit humidity of the conditioned air, and a lower limit that is determined by the lower limit temperature and the lower limit humidity. Target temperature / humidity line setter that sets the target temperature / humidity line connecting the state points in the air diagram table, and outside air that sets the outside air state point in the air diagram table based on the temperature and humidity of the outside air detected by the thermo-hygrometer A state point setter, a main heating line that moves in the heating direction along the absolute absolute humidity line on the air diagram from the outside air state point to any state point on the target temperature / humidity line, and an air diagram The adiabatic humidification line that moves upward in the humidification direction along the isenthalpic line, the cooling line that moves toward the cooling temperature set below the dew point temperature of the upper limit state point on the air diagram, and the air line diagram Heating along an absolute humidity line Of the auxiliary heating line to remain in direction, the estimated line setter for setting a state change estimated line which the necessary lines in response to temperature and humidity regulator air conditioner has been linked in this order,
Based on the expected state change line set by the expected line setting device, the main heating device, the adiabatic humidification device, the main heating device, the adiabatic humidification device, which have the end point temperatures of the main heating line, the adiabatic humidification line, the cooling line and the auxiliary heating line,
A target outlet temperature setting device that outputs the target outlet temperature of the cooling device and the auxiliary heating device to each of the capacity control devices, an outlet temperature of each temperature and humidity regulator detected by each of the temperature sensors, and the target outlet temperature When the difference between the target outlet temperatures of the temperature / humidity adjusters set by the setting device is larger than the allowable error and does not fall below the allowable error even after a lapse of a predetermined time, it is notified that the temperature / humidity controller is abnormal. It is characterized by having an anomaly detector.

According to the present invention, first, an air diagram in which a target temperature / humidity line connecting the upper limit state point determined by the upper limit temperature and the upper limit humidity of the conditioned air and the lower limit state point determined by the lower limit temperature and the lower limit humidity is set An outside air state point determined by the temperature and humidity of the outside air is set on the upper side. Then, from the outside air state point to an arbitrary state point on the target temperature / humidity line (for example, the closest state point), the main heating line that moves in the heating direction along the absolute humidity line on the air diagram, and the air Adiabatic humidification line that moves in the humidification direction along the isenthalpic line on the diagram, cooling line that moves toward the cooling temperature set below the dew point temperature of the upper limit state point on the air diagram, and air diagram Of the auxiliary heating lines that move in the heating direction along the isoabsolute humidity line above, the state change prediction line is set by connecting the necessary lines in this order. Then, based on the state change expected line, the end temperature of the main heating line, the adiabatic humidification line, the cooling line, the auxiliary heating line, as the target outlet temperature of the main heating device, the adiabatic humidification device, the cooling device, the auxiliary heating device, It is set according to the outside air state point.

Therefore, if the target outlet temperature is set in each volume control device of an existing air conditioner including a main heating device, an adiabatic humidification device, a cooling device, and an auxiliary heating device as a temperature / humidity adjuster, each volume control is performed. In the device, the capacity of each temperature / humidity adjusting device is independently feedback-controlled so that each outlet temperature matches the respective target outlet temperature. At this time, each target outlet temperature is not set by monitoring the temperature / humidity of the outlet of the air conditioner, but is a process for adjusting / humidifying the outside air to a predetermined temperature / humidity based on the expected state change line. Since the temperature is set to the optimum value, stable and responsive control is achieved, which leads to energy saving and running cost reduction. Furthermore, if the outlet temperature of one of the temperature / humidity regulators deviates significantly from the target outlet temperature for some reason, and the difference does not decrease even after a lapse of a predetermined time, an alarm signal is output from the abnormality detector. For example, it is possible to notify the operator of the occurrence of an abnormal situation by emitting a notification sound or turning on a warning light.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an explanatory view showing a temperature / humidity control device for an air conditioner according to the present invention, and FIG. 2 is an air diagram showing its operation. The same parts as those in FIGS. 3 and 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

The temperature / humidity control device 20 according to the present invention has, on its input side, a temperature / humidity sensor TH for detecting the temperature / humidity of the outside air.
₁ is connected to the output side of which is connected a capacity setting device 10 for setting the capacities of the main heating device 4, the adiabatic humidification device 5, the cooling device 6, the auxiliary heating device 7, and the auxiliary humidification device 8 of the air conditioner 1, The heating capacity, humidifying capacity, and cooling capacity of each of the temperature / humidity adjusting devices 4 to 8 for heating / humidifying / cooling are controlled based on the temperature / humidity of the outside air detected by the temperature / humidity sensor TH ₁ . .

The temperature / humidity control device 20 uses a psychrometric chart.
Pre-stored air diagram table 21 and temperature and humidity of conditioned air
The target temperature / humidity line L indicating the degree is shown in the air line chart table 21.
Set the target temperature / humidity line setter 22 and the target temperature / humidity line L.
Based on the psychrometric chart, the control area₁~ C_FourPartition into
Control area setter 23 and temperature / humidity meter TH ₁Detected by
Outside air state point A based on the outside temperature and humidity₁~ A_FiveThe air line
The outside air state point setter 24 set in the chart table 21 and the outside
Qi point A₁~ A_FiveControl area C to which₁~ C_Four
Control area selector 25 for selecting the₁~
A_FiveAnd the temperature / humidity change of the outside air based on the target temperature / humidity line L
Expected state change line J₁ ~ J_Five Expected line setting device 26
And the expected state change line J set by the expected line setter 26. ₁
~ J_FiveBased on the main heating device 4, adiabatic humidifier 5, cooling device
Set the target outlet temperature of the storage device 6 and auxiliary heating device 7,
Target outlet temperature setting device 27 for outputting to the amount setting device 10
And any one of the temperature / humidity regulators 4 to 7 is abnormal.
Equipped with an anomaly detector 28 that sometimes outputs an alarm signal
There is.

In the target temperature / humidity line setter 22, when the upper limit state point Ps determined by the upper limit temperature and the upper limit humidity of the conditioned air and the lower limit state point Pw determined by the lower limit temperature and the lower limit humidity are input, a line connecting them is drawn. It is automatically set as the target temperature / humidity line L. The upper limit state point Ps and the lower limit state point Pw
Are equal to the atmosphere in the coating booth in summer and winter respectively, for example, the upper limit state point Ps is set to an upper limit temperature of 28 ° C. and an upper limit humidity of 75% (relative humidity), and the lower limit state point Pw is set to an upper limit temperature of 25 ° C. and an upper limit. The humidity is set to 75% (relative humidity).

In the control area setter 23, based on the target temperature / humidity line L, the enthalpy is equal to the upper limit state point Ps, and the upper limit enthalpy line E extending from the upper limit state point Ps to the high temperature side.
s, the upper limit state point Ps and the absolute humidity are equal, and the upper limit state point P
The upper limit absolute humidity line Hs extending from s to the low temperature side, the lower limit state point Pw and the enthalpy are equal, the lower limit enthalpy line Ew extending from the lower limit state point Pw to the high temperature side, and the lower limit state point Pw and the absolute humidity are equal to the lower limit state point Pw. Each boundary line of the lower limit absolute humidity line Hw extending to the low temperature side is set on the air diagram table 21. Then, based on this, the air diagram is divided into the low temperature period control area C ₁ partitioned by the lower limit enthalpy line Ew and the lower limit absolute humidity line Hw, and the upper limit enthalpy line Es, the lower limit enthalpy line Ew, and the target temperature / humidity line L. Intermediate period low relative humidity control area C ₂ , intermediate period high relative humidity control area C ₃ partitioned by upper limit absolute humidity line Hs, lower limit absolute humidity line Hw and target temperature humidity line L, and upper limit enthalpy line Es
And is divided into four control areas C ₁ -C ₄ in the high temperature period control area C ₄ partitioned by the upper limit absolute humidity line Hs, are set respectively to the psychrometric chart table 21.

The expected line setter 26 determines whether the outside air state points A ₁ to
From A ₅ to the closest state point on the target temperature / humidity line L, the main heating line J _T that moves in the heating direction along the iso-absolute humidity line on the air diagram and the isoenthalpy line on the air diagram. Along the adiabatic humidification line J _H that moves in the humidification direction along with the cooling line J _C that moves toward the cooling temperature Tc that is set below the dew point temperature of the upper limit state point Ps on the air diagram Auxiliary heating line J _t that moves along the absolute humidity line in the heating direction
Of these, the state change forecast line J
Set _{1 to} J ₅ . In the case of this example, the outside air state point A ₁ ~
Previously storing a control procedure corresponding to the control area C ₁ -C ₄ where A ₅ belongs cold stage control procedure setter S _1, interim low relative humidity control procedure setter S _2, interim high relative humidity control procedure setter S _3, and a high temperature period control procedure setter S _4, are adapted to determine a control procedure for each control area C ₁ -C _4.

In the low temperature period control area C ₁ , the outside air state point A ₁ has a lower enthalpy and a lower absolute humidity than the lower limit state point Pw. Therefore, the enthalpy is increased by the heating operation and the absolute humidity is increased by the adiabatic humidification operation. It needs to be high. Therefore, the low-temperature control procedure setter S ₁ has a lower limit enthalpy line Ew along the iso-absolute humidity line on the air diagram from the outside air state point A ₁ to the lower limit state point Pw.
The state change prediction line J that connects the main heating line J _T that moves in the heating direction up to and the adiabatic humidification line J _H that moves in the humidification direction along the isenthalpy line on the air diagram to the lower limit state point in this order.
₁ is set.

In the intermediate low relative humidity control area C ₂ ,
Since the enthalpy of the outside air state point A ₂ is equal to any of the state points on the target temperature / humidity line L and the relative humidity is only low, it is necessary to perform isenthalpic humidification by adiabatic humidification operation. Therefore, the intermediate low relative humidity control procedure setter S ₂
From the outside air state point A ₂ to the target temperature / humidity line L,
An adiabatic humidification line J _H that changes in the humidification direction along the isenthalpic line on the psychrometric chart is set as the state change prediction line J ₂ .

In the intermediate period high relative humidity control area C ₃ ,
Since the absolute humidity of the outside air state point A ₃ is equal to any of the state points on the target temperature / humidity line L and only the temperature is low, it is necessary to perform the heating operation. This area C ₃ is the target temperature / humidity line L
Since the temperature difference from the above state point is small, it is difficult to control the temperature with the main heating device 4 having a large heating capacity, and therefore the auxiliary heating device 7 capable of finely adjusting the heating capacity is used. Then, the intermediate period high relative humidity control procedure setting device S ₃
From the outside air state point A ₃ to the target temperature / humidity line L,
An auxiliary heating line J _t that transitions in the heating direction along the iso-absolute humidity line on the psychrometric chart is set as the state change prediction line J ₃ .

In the high temperature period control area C ₄ , the outside air state points A ₄ and A ₅ have a higher enthalpy or a higher absolute humidity than the upper limit state point Ps. Therefore, even if it is necessary to perform the cooling operation, it is not necessary to increase the enthalpy by the heating operation. When the outside air state point A ₄ has a higher enthalpy and a lower absolute humidity than the upper limit state point Ps, it is necessary to pre-humidify in advance of the amount of dehumidification due to the cooling operation.
Further, when the humidity at the outside air state point A ₅ is sufficiently high, it is necessary to dehumidify by cooling operation and heat the supercooled portion by heating operation. Therefore, in the high temperature period control area C ₄ , the humidification boundary line Hc that passes through the cooling state point Pc of 100% relative humidity at the cooling temperature Tc of the cooling device 6 and the upper limit state point Ps.
In the low humidity area d on the low humidity side of the boundary line Hc.
₁ and the high-humidity area d ₂ on the high-humidity side. When the outside air state point A ₄ is in the low-humidity area d ₁ , the absolute humidity is increased by the adiabatic humidification operation, and then the dehumidification cooling is performed by the cooling operation. When the outside air state point A ₅ is in the high humidity area d ₂ , dehumidifying and cooling may be performed by a cooling operation, and then heating may be performed by a heating operation.

Therefore, the high temperature period control procedure setting device S_Four
At the outside air state point A_FourIs a low humidity area d₁When
Control procedure and outside air state point A_FiveIs a high humidity area d₂It is in
The control procedure at that time is set respectively. And the outside air
Starting point A_FourIs a low humidity area d₁The outside air state point when
From the upper limit state point Ps to
Transition along the lupi line to the humidification boundary line Hc in the humidification direction
Adiabatic humidification line J_HAnd on the humidification boundary line Hc toward the cooling direction
Cooling line J that changes to the upper limit state point Ps_CIn this order
Predicted state change line J _FourControlled along. Also,
Outside air state point A_FiveIs a high humidity area d₂Outside air when
From the state point to the upper limit state point Ps, cool the air diagram
Of the cooling device 6 at the cooling temperature Tc of 100% relative humidity
Transition to the upper limit absolute humidity line Hs toward the rejection state point Pc
Cooling line J_CAnd the upper limit state along the upper limit absolute humidity line Hs
Auxiliary heating line J that moves in the heating direction up to point Ps_tIn this order
Expected state change line J_FiveControlled along.

Then, in this way, the expected line setting device 2
When the state change prediction lines J _{1 to} J ₅ are set in step 6, the target outlet temperature setting device 27 sets the main heating device 4 based on this.
The target outlet temperatures of the adiabatic humidifier 5, the cooling device 6, and the auxiliary heating device 7 are set. In this case, in each of the state change prediction lines J _{1 to} J ₅ , the end temperature of the main heating line J _T is the target outlet temperature of the main heating device 4, and the end temperature of the adiabatic humidifying line J _H is the target outlet of the adiabatic humidifying device 5. The temperature and the end temperature of the cooling line J _C are the target outlet temperature of the cooling device 6, and the end temperature of the auxiliary heating line J _t is the target outlet temperature of the auxiliary main heating device 7. Then, the respective target outlet temperatures set in this way are output to the respective capacity control devices 11 to 14 of the capacity setting device 10, and in the respective capacity control devices 11 to 14, the temperature sensors T _{1 to} T.
The respective capacities are feedback-controlled so that the outlet temperature detected in ₄ matches the target outlet temperature.

Further, the abnormality detector 28 is connected to the target temperature setting device 27 and each of the temperature sensors T _{1 to} T ₄ on the input side thereof, and to the alarm device 29 on the output side thereof. Then, the difference between the outlet temperature of each of the temperature / humidity adjusters 4 to 7 detected by each of the temperature sensors T _{1 to} T ₄ and the respective target outlet temperature set by the target temperature setting unit 27 is calculated. When the difference is larger than the preset allowable error range, and when the difference does not fall below the allowable error range even after a lapse of a predetermined time, it is determined that an abnormality has occurred in the temperature / humidity adjusters 4 to 7 and the alarm device 29 is notified. An alarm signal is output. When the alarm signal is input, the alarm device 29 emits an alarm sound and lights a warning light to notify the operator that an abnormality has occurred. The monitor lamps that display the humidity adjusters 4 to 7 are turned on.

The above is an example of the configuration of the present invention, and its operation will be described below. First, on the psychrometric chart recorded in the psychrometric chart table 21, the temperature 28 ° C, which is the atmosphere of the painting booth in summer, the upper limit state point Ps of 75% relative humidity, and the temperature 20 ° C, which is the atmosphere of the painting booth in winter, Relative humidity 75%
When the lower limit state point Pw of is set, the target temperature / humidity line setter 2
2, the target temperature / humidity line L connecting the upper limit state point Ps and the lower limit state point Pw is set.

Next, when the target temperature / humidity line L is set, the control area setter 23 controls the low temperature period control area C ₁ which mainly controls in the winter season and the low humidity period in the spring / autumn season. Intermediate low relative humidity control area and C
_2, mainly spring / autumn half high relative humidity controlled area and C ₃ for controlling the day with a high humidity, is set four regions of high temperature period control area C ₄ to perform control mainly in summer. In each of the control areas C _{1 to} C ₄ , the enthalpy is equal to the upper limit state point Ps, the upper limit enthalpy line Es extending from the upper limit state point Ps to the high temperature side, and the upper limit state point Ps and the absolute humidity are equal to the low temperature side from the upper limit state point Ps. Upper limit absolute humidity line H
s, a lower limit enthalpy line Ew whose lower limit state point Pw is equal to the enthalpy and extends from the lower limit state point Pw to the high temperature side, and a lower limit absolute humidity line Hw whose lower limit state point Pw is equal to absolute humidity and extends from the lower limit state point Pw to the lower temperature side. It is partitioned. Also,
The high temperature period control area C ₄ has a low humidity side lower than the humidification boundary line Hc with the humidification boundary line Hc passing through the cooling state point Pc of 100% relative humidity and the upper limit state point Ps at the cooling temperature Tc of the cooling device 6 as a boundary. It is divided into a humidity area d ₁ and a high humidity area d ₂ on the high humidity side.

When controlling the temperature and humidity of the air conditioner 1,
First, to detect the outside air temperature and humidity at the temperature and humidity meter TH _1, on the basis of the detection result, to set the outside air state point A ₁ to A ₅ to psychrometric chart at ambient state point setter 24.

In the winter, the outside air state point A ₁ is often included in the low temperature period control area C _{1. In} this case, the outside air state point A _{1 is changed} to the lower limit state point Pw by the low temperature period control procedure setter S _1. Up to the main heating line J _T, which moves in the heating direction along the iso-absolute humidity line, and the adiabatic humidification line J _{H, which} moves in the humidification direction along the iso-enthalpy line on the air diagram.
A state change prediction line J ₁ is set by connecting in this order. Then, in the target outlet temperature setting device 27, the state change prediction line J
The end point of the main heating line J _T of ₁ (the point where the main heating line J _T intersects the lower limit enthalpy line Ew) B ₁ is set as the target outlet temperature of the main heating device 4, and the end point of the adiabatic humidification line J _H (lower limit The temperature of the state point Pw) is set as the target outlet temperature of the adiabatic humidifying device 5, and the respective target outlet temperatures are output to the main heating device 4 and the capacity control devices 11 and 12 of the adiabatic humidifying device 5. Thereby, first, in the main heating capacity control device 11,
The heating capacity is feedback-controlled so that the outlet temperature of the main heating device 4 detected by the temperature sensor T ₁ coincides with the temperature of the end point B ₁ of the main heating line J _T. Then, in the humidification capacity control device 12, the temperature sensor The outlet temperature of the adiabatic humidifier 5 detected at T ₂ is the end point of the adiabatic humidification line J _H (lower limit state point P
The humidification capacity is feedback-controlled so as to match the temperature of w), and the outside air state point A ₁ changes along the state change prediction line J ₁ and reaches the lower limit state point Pw. In this case, the cooling device 6 is stopped, and the auxiliary heating device 7 and the auxiliary humidifying device 8 are provided to finely adjust the temperature and humidity according to the detection result of the temperature / humidity meter TH ₂ , and have the minimum heating capacity. And keep it running at the lowest humidification capacity.

On the day when the relative humidity is low in spring / autumn, the outside air state point A ₂ is in the intermediate low relative humidity control area C ₂
In this case, from the outside air state point A ₂ to the target temperature / humidity line L by the intermediate period low relative humidity control procedure setter S ₂ , along the enthalpy line on the air diagram. The adiabatic humidification line J _H that changes in the humidification direction is set as the state change prediction line J ₂ as it is. Then, in the target outlet temperature setting device 27, the adiabatic humidification line J ₂ of the state change prediction line J _2
The temperature of the end point _H of _H (state point on the target temperature / humidity line L) B ₂ is set as the target outlet temperature of the adiabatic humidifying device 5, and this is output to the capacity control device 12 of the adiabatic humidifying device 5. As a result, in the humidification capacity control device 12, the humidification capacity is feedback-controlled so that the outlet temperature of the adiabatic humidification device 5 detected by the temperature sensor T ₂ matches the temperature of the end point B ₂ of the adiabatic humidification line J _H , and the outside air temperature is controlled. The state point A ₂ is the state change prediction line J ₂
Along the line to the state point B ₂ on the target temperature / humidity line L.
In this case, the main heating device 4 and the cooling device 6 are stopped, and the auxiliary heating device 7 and the auxiliary humidifying device 8 are used to finely adjust the temperature and humidity according to the detection result of the temperature / humidity meter TH _2. Prepare and operate in the idling state with the minimum heating capacity and the minimum humidifying capacity.

Further, on a day with high relative humidity in the spring / autumn period, the outside air state point A ₃ is the intermediate high relative humidity control area C ₃
In this case, from the outside air state point A ₃ to the target temperature / humidity line L by the intermediate period high relative humidity control procedure setter S ₂ along the iso-absolute humidity line on the air diagram. The auxiliary heating wire J _t that changes in the heating direction is the expected state change line J ₃
Is set as. If the main heating device 4 tries to change the outside air state point A ₃ , the heating capacity of the main heating device 4 is too large to perform fine adjustment.
In this control area C ₃ , an auxiliary heating device 7 that can be finely adjusted
Is used. Then, in the target outlet temperature setting device 27,
The temperature of the end point (state point on the target temperature / humidity line L) B ₃ of the auxiliary heating line J _t of the state change prediction line J ₃ is set as the target outlet temperature of the auxiliary heating device 7, and this is set in the auxiliary heating capacity control device 14. Is output. As a result, in the auxiliary heating capacity control device 14, the auxiliary heating device 7 detected by the temperature sensor T ₄ is detected.
The heating capacity is feedback-controlled so that the outlet temperature of the auxiliary heating line J _t coincides with the temperature of the end point B ₃ of the auxiliary heating line J _t , and the outside air state point A ₃ is the target temperature / humidity line L along the state change prediction line J _3.
Transition to state point B ₃ above. In this case, the main heating device 4 and the cooling device 6 are stopped, and the adiabatic humidifying device 5 is operated in the idling state of the minimum humidifying capacity in order to remove dust and dirt contained in the outside air, and the auxiliary humidifying device is operated. 8
Is prepared in order to finely adjust the humidity according to the detection result of the thermo-hygrometer TH ₂ , and is operated in the idling state of the minimum humidification capacity.

Furthermore, in the summer, the outside air state point A ₄ ,
A ₅ is often included in the high temperature period control area C ₄ . Then, when the outside air state point A ₄ is included in the low humidity area d ₁ in the control area C ₄ , the high temperature period control procedure setter S is set.
Due to ₄ , the humidification boundary line H along the isenthalpic line on the air diagram from the outside air state point A ₄ to the upper limit state point Ps
An adiabatic humidification line J _H that changes in the humidification direction to c and a cooling line J _C that changes in the cooling direction on the humidification boundary line Hc to the upper limit state point Ps are connected in this order, and a state change prediction line J ₄ is set. To be done. Then, in the target outlet temperature setting device 27, the temperature of the end point of the adiabatic humidification line J _H of the state change prediction line J ₄ (the point where the adiabatic humidification line J _H intersects the humidification boundary line Hc) B ₄ is the target of the adiabatic humidification device 5. The temperature of the end point (upper limit state point Ps) of the cooling line J _C is set as the outlet temperature, and the target outlet temperature of the cooling device 6 is set, and the respective target outlet temperatures of the adiabatic humidifying device 5 and the cooling device 6 are controlled. It is output to 12 and 13. As a result, first, the humidification capacity control device 12 feedback-controls the humidification capacity so that the outlet temperature of the adiabatic humidification device 5 detected by the temperature sensor T ₂ matches the temperature of the end point B ₄ of the adiabatic humidification line J _H. Then, in the cooling capacity control device 13, the cooling capacity is feedback-controlled so that the outlet temperature of the cooling device 6 detected by the temperature sensor T ₃ coincides with the end temperature of the cooling line Jc (the temperature of the upper limit state point Ps). , The outside air state point A ₄ reaches the upper limit state point Ps along the state change prediction line J ₄ . In this case,
The main heater 4 is allowed to stop, the auxiliary heating device 7 and the auxiliary humidifier 8 is provided in order to fine-tune the temperature and humidity in accordance with the detection result of the temperature and humidity meter TH _4, minimum heating capacity and minimum humidification capacity Keep it running idling.

Further, the outside air state point A ₅ is the control area C ₄
When it is included in the high humidity area d ₂ of No. ₂ , the cooling temperature T of the cooling device 6 is set on the air diagram from the outside air state point A ₅ to the upper limit state point Ps by the high temperature period control procedure setter S _4.
The cooling line J _C that transitions to the upper limit absolute humidity line Hs toward the cooling state point Pc of 100% relative humidity in c, and the auxiliary heating line J that transitions in the heating direction along the upper limit absolute humidity line Hs to the upper limit state point Ps. _A state change prediction line J ₅ connecting _t in this order is set. Then, the target outlet temperature setting device 27
Then, the temperature of the end point (point where the cooling line J _C intersects the upper limit absolute humidity line Hs) B ₅ of the cooling line J _C of the state change prediction line J ₅ is set as the target outlet temperature of the cooling device 6, and the auxiliary heating line J ₅ is set.
The temperature at the end point (upper limit state point Ps) of _t is set as the target outlet temperature of the auxiliary heating device 7, and the respective target outlet temperatures are the capacity control devices 13 and 1 of the cooling device 6 and the auxiliary cooling device 7.
4 is output. Thereby, first, the cooling capacity control device 13 feedback-controls the cooling capacity so that the outlet temperature of the cooling device 6 detected by the temperature sensor T ₃ matches the temperature of the end point B ₅ of the cooling line Jc, and then, In the auxiliary heating capacity control device 14, the heating capacity is feedback-controlled so that the outlet temperature of the auxiliary heating device 7 detected by the temperature sensor T ₄ coincides with the temperature of the end point (upper limit state point Ps) of the auxiliary heating line J _t. , The outside air state point A ₅ changes to the upper limit state point Ps along the state change prediction line J ₅ . In this case, the main heating device 4 is stopped, and the adiabatic humidifying device 5 is operated in the idling state of the minimum humidifying capacity in order to remove dust and dirt contained in the outside air, and the auxiliary humidifying device 8
It is provided with its heating capacity and humidifying capacity to control the feed bag in accordance with the detection result of the temperature and humidity meter TH _2, allowed to operated in an idling state of the minimum humidification capacity.

As described above, according to this example, since the main heating device 4, the adiabatic humidifying device 5, the cooling device 6, and the auxiliary heating device 7 are independently feedback-controlled at the respective outlet temperatures, the respective control amounts are controlled. Not only can it be set easily and accurately irrespective of other control amounts, but also the response speed is fast because feedback control is performed based on the outlet temperature of each device 4-7, and any desired value on the target temperature / humidity line L can be set. The temperature and humidity can be accurately controlled to the state point. Moreover, since it is controlled according to a state change estimated line J ₁ through J ₅ which is set in advance, without performing wasteful control operation, energy saving,
This will contribute to low running costs.

After the temperature / humidity control is started, the outlet temperatures detected by the temperature sensors T _{1 to} T ₄ and the target outlet temperature set by the target outlet temperature 27 are input to the abnormality detector 28, It is determined whether or not the difference is larger than a preset allowable error range. If the difference between the outlet temperature and the target outlet temperature is larger than the allowable error range and does not fall below the allowable range even after the elapse of a predetermined time, the temperature / humidity adjuster 4 to
It is judged that an abnormality has occurred in 7 and an alarm signal is output to the alarm device 29. For example, in the case of controlling in accordance with the state change estimated line J ₁ from the outside air state point A ₁ to the lower limit state point Pw, immediately after operation start of the air conditioning apparatus 1, the outlet temperature of the main heating device 4 detected by the temperature sensor T ₁ is The temperature is equal to the temperature of the outside air state point A ₁ , and the difference from the temperature of the end point B ₁ of the main heating line J _T , which is the target outlet temperature, is larger than the allowable error range. And
If a difference between the outlet temperature of the heating device 4 and the target outlet temperature falls within the allowable error range after a lapse of a predetermined time (for example, 2 minutes) after the control is started, it can be determined that the main heating device 4 is normal. On the other hand, if the difference between the outlet temperature of the heating device 4 and the target outlet temperature does not fall within the allowable error range even after the lapse of a predetermined time (for example, 2 minutes), it is determined that an abnormality has occurred in the main heating device 4. Output an alarm signal. In addition, when the main heating device 4 is over-combusted and the outlet temperature is higher than the target outlet temperature during operation of the air conditioner 1, or when the combustion temperature is lower than the target outlet temperature due to poor combustion, the outlet temperature is also the same. It is possible to determine whether or not an abnormality has occurred based on the difference between the target outlet temperature and the target outlet temperature. Further, not only the main heating device 4, but also the adiabatic humidification device 5, the cooling device 6, and the auxiliary heating device 7 are similar.

In the above description, the area in the psychrometric chart is divided into a plurality of control areas C _{1 to} C ₄ in advance, and the heating / humidifying devices 4 to 7 used in the respective areas are divided. Although the case of setting in advance has been described, the present invention is not limited to this, and any state on the target temperature / humidity line L from the outside air state points A _{1 to} A _{5 is} not divided into the control areas C _{1 to} C _4. When selecting the temperature / humidity adjusting devices 4 to 7 to be used and setting the outlet target temperature of each of the capacity control devices 11 to 14 by drawing the state change prediction lines J _{1 to} J ₅ up to the point. May be

In addition, the psychrometric chart is shown in four control areas C ₁
Has been described as being divided into -C _4, the number of installed each temperature and humidity adjusting apparatus 4-8 for heating / humidifying / cooling may be more finely divided according or configuration and capacity. For example, the high temperature period control area C ₄ is further divided into two control areas d ₁ and d ₂ with the humidification boundary line Hc as a boundary based on the cooling temperature Tc of the cooling device 6, but the other control areas C ₁ to C ₃ may be further subdivided similarly to the high temperature period control area C ₄ .

Further, in the above description, as the temperature / humidity adjuster, the main heating device 4, the adiabatic humidification device 5, the cooling device 6,
Although the case where the auxiliary heating device 7 and the auxiliary humidifying device 8 are provided has been described, the present invention is not limited to this, and, for example, an air conditioner without the cooling device 6 for cold regions, or a main heating for warm / tropical regions. It is also possible to specify an air conditioner without the device 4. In this case, for example, in the air conditioner without the cooling device 6, the outside air state points A ₄ and A ₅ are located in the high temperature period control area C ₄
Although it becomes uncontrollable when BR>, there is no inconvenience because it is an air conditioner installed in an area where outside air state points A ₄ and A ₅ cannot exist in such control area C _4. . Furthermore, the upper limit state point Ps and the lower limit state point P
The w is not necessarily set separately, but may be set as the same state point. In this case, the target temperature / humidity line L is also one point, and therefore the intermediate low relative humidity control area C is set. ₂ and the intermediate high relative humidity control area C ₃ disappear.

[0044]

As described above, according to the present invention, the optimum state change prediction line is automatically generated based on the outside air state point determined by the temperature and humidity of the outside air and the preset target temperature / humidity line. Based on this, based on this, select the device to be used for temperature and humidity control from the main heating device, adiabatic humidification device, cooling device, and auxiliary heating device installed in the air conditioner as temperature and humidity controller, and Each time the outlet temperature of the regulator is adjusted, the main heating line, adiabatic humidification line, cooling line, and
Since the heating / humidifying / cooling capacity of each device is controlled independently so as to match the end temperature of the auxiliary heating line, each control amount can be set easily and accurately regardless of other control amounts. In addition, since unnecessary control operation is not required, the response speed is fast, energy loss is minimized, and therefore running cost can be reduced, which is a very excellent effect. In addition, the control device according to the present invention is installed in an existing air conditioner, and the control device attached to the air conditioner is used as it is, or the temperature and humidity are controlled by making some software changes. Since it is possible to perform only a simple installation work and there is no need to modify the existing air conditioner, the facility cost associated with the modification can be low and the construction period can be extremely short. Furthermore, when the outlet temperature of each temperature / humidity regulator does not reach the respective target outlet temperature within a predetermined time,
An alarm signal is output to notify that one of the temperature / humidity regulators has failed, so that you can take immediate action, such as by switching to a spare air conditioner, and keep the temperature and humidity constant. There is also an effect that it is possible to prevent the unmaintained conditioned air from being supplied to the coating booth or the like, and maintain the coating quality.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a temperature / humidity control device for an air conditioner according to the present invention.

FIG. 2 is a psychrometric chart showing the operation.

FIG. 3 is an explanatory view showing a conventional device.

FIG. 4 is a psychrometric chart showing the operation.

FIG. 5 is an explanatory diagram showing an air conditioner improved from the conventional device.

FIG. 6 is a psychrometric chart showing the operation.

[Explanation of symbols]

1 ... Air conditioner 2 ... Outside air intake 3 ... Air conditioning air supply port 4 ... Main heating device 5 ... Adiabatic humidifier 6 ... Cooling device 7 ...・ ・ ・ Auxiliary heating device 10 ・ ・ ・ Capacity setting device 11 ・ ・ ・ Main heating capacity control device 12 ・ ・ ・ ・ Humidity capacity control device 13 ・ ・ ・ Cooling capacity control device 14 ・ ・ ・ Auxiliary heating capacity Control device 20 ・ ・ ・ ・ Temperature / humidity control device 21 ・ ・ ・ ・ ・ ・ Plot diagram 22 ・ ・ ・ ・ Target temperature / humidity line setting device 23 ・ ・ ・ ・ Control area setting device 24 ・ ・ ・ ・ ・ ・ Outside air condition point setting device 25 ... ・ Control area selector 26 ・ ・ ・ Expected line setting device 27 ・ ・ ・ ・ Target outlet temperature setting device 28 ・ ・ ・ ・ Abnormality detector S ₁・ ・ ・ Low temperature control procedure setting device S ₂・· interim low relative humidity control procedure setter S ₃ · · · half high relative humidity control procedure setter S ₄ · · · high temperature period control procedure Joki TH _1, TH ₂ ·· temperature and humidity sensor T ₁ through T ₄ · · Temperature sensor Ps · · · upper limit state point Pw · · · limit state point L · · · · target temperature and humidity line Es · · · upper limit enthalpy line Hs · · · upper limit absolute humidity line Ew · · · lower enthalpy Hw · · · lower absolute humidity line Hc · · · humidification border C ₁ · · · cold stage control area C ₂ · · · interim low relative humidity Control area C ₃ ... Intermediate high relative humidity control area C ₄ ... High temperature control area d ₁ ... Low humidity area d ₂ ... High humidity area A _{1 to} A ₅ ... Outside air state point J ₁ ~J ₅ ····
Expected state change line J _T ... Main heating line J _H ... Adiabatic humidification line J _C ... Cooling line J _t ... Auxiliary heating line Tc ... Cooling temperature Pc ... Cooling state point

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-5-288390 (JP, A) JP-A-9-203552 (JP, A) JP-A-2-37245 (JP, A) JP-A-63- 294445 (JP, A) JP-A-4-124546 (JP, A) JP-A-10-227483 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24F 11/02 102

Claims (2)

(57) [Claims] 1. The temperature and humidity of the outside air taken in are set in advance.
In order to adjust the temperature and humidity, the heating capacity is variable.
Main heating device (4) and adiabatic humidifier with variable humidification capacity
(5), cooling device with variable cooling capacity (6), heating capacity
At least the auxiliary heating device (7) capable of fine adjustment of
Equipped with one or more temperature and humidity regulators, The temperature of the air passing through each of the temperature and humidity regulators (4 to 7)
Temperature sensor to measure (T₁~ T_Four) Is each temperature and humidity controller
It is installed at the exit of (4-7), Each temperature sensor (T₁~ T_Four), The outlet temperature detected by
Target outlet temperature of each preset temperature / humidity regulator (4-7)
Increase or decrease the capacity of each temperature and humidity regulator (4 to 7) by comparing the temperature
Of the air conditioner (1) equipped with the capacity control device (11 to 14)
A temperature / humidity control device for an air conditioner for controlling temperature / humidity, Temperature / humidity sensor (TH₁) And the air line
And a psychrometric chart table (21) pre-stored, Upper limit determined by upper limit temperature and upper limit humidity of conditioned air
The lower limit determined by the starting point (Ps) and the lower limit temperature and lower limit humidity.
Plot the target temperature / humidity line (L) connecting the limit state points (Pw)
Target temperature / humidity line setter (22) set in the table (21)
When, The temperature and humidity sensor (TH₁) Based on the temperature and humidity of the outside air
Outside air condition point (A₁~ A_Five) To the psychrometric table (21)
The outside air status point setter (24) to be set, The outside air condition point (A₁~ A_Five) To the target temperature / humidity line (L)
Absolute humidity on the psychrometric chart until reaching any of the above state points
Main heating line that changes in the heating direction along the line (J _T) And the sky
Transition in the humidification direction along the isenthalpic line on the air diagram
Adiabatic humidification line (J_H) And the upper limit state point (Ps) on the psychrometric chart
Toward the cooling temperature (Tc) set below the dew point temperature of
Transitional cooling line (J_C) And the absolute humidity line on the psychrometric chart
Auxiliary heating wire (J_t) No
Then, in the temperature and humidity controller (4-7) that the air conditioner (1) has
Depending on the required line in this order, the state change prediction line (J₁
~ J_Five) Setting the expected line setting device (26), Expected line of state change set by the expected line setter (26)
(J₁~ J_Five), The main heating wire (J_T), Adiabatic humidification line
(J_H), Cooling line (J_C), Auxiliary heating wire (J_t) End point
Turn off the main heating device (4) of the air conditioner (1)
Heat humidifier (5), cooling device (6), auxiliary heating device
As the target outlet temperature of (7), each capacity control device (11 to
Target outlet temperature setting device (27) that outputs to 14), Each temperature sensor (T₁~ T_Four) Each temperature and humidity adjustment detected by
Set the outlet temperature of the vessel and the target outlet temperature setter (27)
Of the target outlet temperature of each of the temperature and humidity regulators (4 to 7)
The difference is larger than the permissible error, and the permissible error even after the elapse of a predetermined time
When the temperature does not fall below, the temperature / humidity controller (4-7)
Equipped with an anomaly detector (28) to inform that there is an anomaly
A temperature and humidity controller for an air conditioner. 2. The upper limit state point (Ps) is equal to the upper limit state point (Ps) on the psychrometric chart based on the target temperature and humidity line (L) set by the target temperature and humidity line setter (22). ) From the upper limit enthalpy line (Es) to the high temperature side, the upper limit state point (Ps) has the same absolute humidity, and the upper limit state point (Ps) extends to the low temperature side from the upper limit absolute humidity line (Hs) and the lower limit state point (Pw). )
And the enthalpy are equal and the lower limit enthalpy line (Ew) extends from the lower limit state point (Pw) to the high temperature side, and the lower limit absolute humidity line (Ew) that is equal to the lower limit state point (Pw) and extends from the lower limit state point (Pw) to the low temperature side (Ew). Hw) and set the psychrometric chart in the low temperature control area (C ₁ ) divided by the lower limit enthalpy line (Ew) and the lower limit absolute humidity line (Hw) and the upper limit enthalpy line (Es).
, The lower limit enthalpy line (Ew) and the target temperature / humidity line (L), the intermediate low relative humidity control area (C ₂ ), the upper limit absolute humidity line (Hs), the lower limit absolute humidity line (Hw) and the target temperature / humidity Mid-term high relative humidity control area separated by line (L)
(C ₃ ) and the high temperature control area (C ₄ ) divided by the upper limit enthalpy line (Es) and the upper limit absolute humidity line (Hs).
Select the control area setter (23) to be set to and the one control area (C _{1 to} C ₄ ) to which the outside air state points (A _{1 to} A ₅ ) set by the outside air state point setter (24) belong. The predictive line setting device (26) is provided with a control area selector (25) that operates according to the control area (C _{1 to} C ₄ ) to which the outside air state point (A _{1 to} A ₅ ) belongs. Humidity adjuster and low temperature control procedure setter (S ₁ ), intermediate low relative humidity control procedure setter (S ₂ ), intermediate high relative humidity control procedure setter (S ₃ ), high temperature with period control procedure setter and (S _4), the low-temperature phase control procedure setter (S _1), the main heater (4) and the adiabatic humidifier (5) is set as the temperature and humidity regulator for use Rutotomoni, control the outside air state point as steps from (a ₁₎ up to the lower limit state point (Pw), a psychrometric diagram equal to the heating along the absolute humidity line Utsusuru main heating line and (J _T),
Adiabatic humidifier line to remain in the humidifying direction along a psychrometric chart to isenthalpic line (J _H) state change expected line connecting in this order (J ₁₎ is set, the interim low relative humidity control procedure set In the device (S ₂ ), an adiabatic humidifier (5) is set as a temperature / humidity regulator to be used, and as a control procedure, air from the outside air state point (A ₂ ) to the target temperature / humidity line (L) An adiabatic humidification line (J _H ) that changes in the humidification direction along the isenthalpic line on the diagram is set as the state change prediction line (J ₂ ), and is set in the intermediate period high relative humidity control procedure setter (S ₃ ). The auxiliary heating device (7) is set as the temperature / humidity controller to be used, and as a control procedure, from the outside air state point (A ₃ ) to the target temperature / humidity line (L), the air diagram is equal and absolute. auxiliary heating line to remain in the heating direction along the psychrometric and (J _t) is a state change estimated line (J ₃₎ Set Te, the high temperature period control procedure setter to (S ₄₎ is adiabatic humidifier as temperature and humidity regulator for use (5), the cooling device (6), the auxiliary heating device (7) is set, As a control procedure, from the outside air state point (A _4, A ₅ ) to the upper limit state point (Ps), the adiabatic humidification line (J _H ) and the air diagram are kept below the dew point temperature of the upper limit state point (Ps). Of the cooling line (J _C ) that moves toward the set cooling temperature (Tc) and the auxiliary heating line (J _t ) that moves in the heating direction along the iso-absolute humidity line on the air diagram, the required The state change prediction line (J _4, J ₅ ) connecting the lines in this order is set up.
The temperature and humidity control device for an air conditioner described.