JP3538007B2 - 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 control device for an air conditioner for controlling the temperature / humidity of an air conditioner for supplying conditioned air whose intake air is adjusted to a preset temperature / humidity. It is suitable for use when supplying conditioned air to a painting booth or the like where it is desired to maintain a constant value and paint under the same conditions.

[0002]

2. Description of the Related Art FIG. 3 shows an existing air conditioner 1 for controlling the temperature and humidity of taken-in outside air to a predetermined temperature and humidity. The 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. As a temperature / humidity controller for controlling the temperature / humidity of the outside air in the air flow path from the outside air inlet 2 to the conditioned air supply port 3, a main heating device such as a burner and the like having a variable heating capacity, a filling material type. Adiabatic humidification device 5 with variable humidification capacity such as a gas-liquid contact device, cooling device 6 with variable cooling capacity such as a cooling coil, auxiliary heating device 7 called a reheater capable of finely adjusting the heating capacity, and isothermal humidification such as a vapor discharge pipe Are provided in this order. A roll filter F for removing dust in the air is interposed between the main heating device 4 and the heat insulating humidifying device 5, and a blower fan 9 for sending out conditioned air to the conditioned air supply port 3.
Are arranged. Further, a temperature sensor T ₂ arranged on the outlet side of the adiabatic humidifier 5, the temperature and humidity sensor TH ₂ disposed in the air conditioning air supply port 3 is connected to the control device 40, the temperature sensor T ₂ The temperature of the air passing through the main heating device 4 and the adiabatic humidification device 5 is detected, and the temperature and humidity sensor TH is detected.
_2, the temperature and humidity of the conditioned air are detected at the state point. The adiabatic humidifier 5 is operated at full power so that the relative humidity of the air passing through it is 100%, the control device 40, the capacity of the main heating device 4 by the detection signal from the temperature sensor T _2, also , the cooling device 6, an auxiliary heating device 7 and the auxiliary humidifier 7 and the cooling / humidifying / heating capacity is feedback controlled based on the detection signal of the temperature-humidity sensor TH _2.

In this case, when the temperature and humidity of the outside air at the state point A ₀ shown in FIG. 4 are adjusted, 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. Through the cooling operation (dehumidifying operation) D ₃ and the auxiliary heating device D ₄ in the auxiliary heating device 7 to reach the state point P ₀ of the conditioned air. At this time, the temperature detected by the temperature sensor T ₂ are, in a state point of the saturated vapor line from a temperature after humidification operation end,
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 the temperature 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 the dew point temperature is still higher than the dew point temperature t ₀ , the cooling device 6 performs cooling (dehumidification). Then, temperature and humidity cooling capacity of the cooling device 6 so that the absolute humidity detected by the sensor TH ₂ is equal to the absolute humidity of the state point P ₀ is adjusted, the temperature and humidity sensor 60 temperature detected by 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 the above. If the humidity is still low even if the cooling capacity of the cooling device 6 is reduced to the minimum, the adjustment is made by the auxiliary humidifying device 8.

However, when such control is performed, in most cases, the adiabatic humidifier 5 must be operated at full power, and one of the main heating device 4 and the cooling device 6 and the auxiliary heating device 7 must be operated. if unable to humidity conditions point P ₀ two tempering / adjustment of the conditioned air to a target, or dehumidified after humidification, to accompany wasteful operation such as heating after cooling, energy wasteful of However, there is a problem that the running cost increases.

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 are individually controlled based on the respective outlet temperatures and outlet humidity. If this is the case, relatively less wasteful control can be performed. FIG. 5 shows a capacity setting device 10 for performing such control.
Is shown, the capacity setting device 10 comprises a main heating capacity control device 11 for performing feedback control of the heating capacity of the main heating device 4 and a humidification capacity control device 12 for performing feedback control of the humidification capacity of the adiabatic humidification device 5. Cooling capacity control device 1 for feedback-controlling the cooling capacity of cooling device 6
3, an auxiliary heating capacity control device 14 for feedback-controlling the heating capacity of the auxiliary heating device 7, and an auxiliary humidification capacity control device 15 for feedback-controlling the humidification capacity of the auxiliary humidification device 8.

The capacity control devices 11 to 15
Are provided on the input side to the temperature sensors T _{1 to} T ₄ provided on the outlet side of the main heating device 4, the adiabatic humidifier 5, the cooling device 6, and the auxiliary heating device 7, and to the conditioned air supply port 3. It is connected to the temperature and humidity sensor TH _2, the output main heating device in a side 4, the adiabatic humidifier 5, a cooling device 6, an auxiliary heating device 7 and the auxiliary humidifier 8 is connected. According to this, the respective capacities are adjusted so that the respective outlet temperatures detected by the respective temperature sensors T _{1 to} T ₄ coincide with the preset target outlet temperatures, and the temperature is detected by the temperature / humidity sensor TH _2. Since the outlet humidity of the auxiliary humidifier 8 is finely adjusted based on the measured humidity, conditioned air adjusted to a predetermined temperature and humidity can be obtained.

[0007]

However, in order to set the temperature and humidity at the outlet of the air conditioner 1 to a preset target temperature and humidity, the outlet temperatures of the individual temperature and humidity controllers 4 to 7 should be set several times. The temperature is not simply determined, but changes every moment if the temperature and humidity of the outside air change even if the target temperature and humidity are constant.

For example, in the psychrometric chart shown in FIG.
After the outside air state point X ₁ is when the temperature and absolute humidity than the target state point P ₀ of the conditioned air is low, heating by the main heater 4,
Operation of the adiabatic humidifier adiabatic humidifier 5 is carried out, this time, the target outlet temperature of the main heating device 4 is t _1. Here, when the humidity of the outside air increases and the outside air state point becomes X ₂ , the target outlet temperature of the main heating device 4 decreases to t ₂ ,
If the outside air state point humidity is lowered becomes X _3, the target outlet temperature of the main heating device 4 rises up to t _3. Incidentally, for example, if the absolute humidity is also temperature of the outside air rises / lowers changes as shown in state point X _4, the target outlet temperature t ₁ of the main heating device 4 is not changed.

When the outside air state point X ₅ is higher in temperature than the target state point P ₀ of the conditioned air and the absolute humidity is low, the operation of cooling with the cooling device 6 after performing adiabatic humidification with the adiabatic humidification device 5 is performed. We, this time, the target outlet temperature of the adiabatic humidifier 5 is t _5. Here, if the outside air state point becomes X ₆ absolute humidity of outside air temperature is not changed is increased, the outlet temperature of the adiabatic humidifier 5 is increased to t _6, the outside air state point absolute humidity is lowered If it becomes X _7, the outlet temperature of the adiabatic humidifier 5 is reduced to t _7.

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

For this reason, the temperature and humidity of the conditioned air are monitored by a temperature and humidity sensor TH ₂ provided at the conditioned air supply port 3, and the capacity of the auxiliary humidifier 8 is controlled to adjust the humidity. Although it is possible to reset the target outlet temperature of the control devices 11 to 15, the temperature and the humidity cannot change independently,
For example, when humidified by the adiabatic humidifier 5, the temperature increases and the temperature decreases at the same time, and when cooled by the cooling device 6, the temperature decreases and the humidity decreases or does not decrease depending on the temperature.

Therefore, even if the temperature and humidity of the conditioned air are monitored by the temperature and humidity sensor TH ₂ provided at the conditioned air supply port 3, the target outlet temperatures of the temperature and humidity controllers 4 to 7 can be accurately set. difficult, and because time lag until it detects that the temperature and humidity of the conditioned air is changed in case of changing the capacity of the temperature and humidity regulator 4-7 in temperature and humidity sensor TH ₂ is large, settles to a steady state It takes a long time, and stable and responsive control cannot be performed. As a result, there is a problem that energy is lost and running cost is increased.

Therefore, the present invention can perform stable and responsive control when performing feedback control of each temperature and humidity controller to obtain conditioned air in which outside air is adjusted to a predetermined temperature and humidity, Finally, it is a technical issue to save energy and reduce running costs.

[0014]

SUMMARY OF THE INVENTION 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 taken-in outside air to a preset temperature and humidity. Adiabatic humidification device with variable humidification capacity, cooling device with variable cooling capacity, and at least one temperature and humidity controller among auxiliary heating devices capable of fine adjustment of heating capacity,
Temperature sensors for measuring the temperature of the air that has passed through each of the temperature and humidity controllers are provided at the outlets of the respective temperature and humidity controllers, and the outlet temperature detected by each of the temperature sensors and each of the preset temperature and humidity adjustments Comparing the target outlet temperature of the air conditioner, a temperature and humidity control device for an air conditioner that performs temperature and humidity control of an air conditioner having a capacity control device that increases and decreases the capacity of each temperature and humidity controller,
A temperature and humidity sensor that detects the temperature and humidity of the outside air, and a pneumatic chart table that stores a pneumatic chart in advance, and an upper limit state point determined by the upper limit temperature and upper limit humidity of the conditioned air, and a lower limit determined by the lower limit temperature and lower limit humidity A target temperature / humidity line setting device for setting a target temperature / humidity line connecting the state points in the air chart table, and an external air state point based on the temperature / humidity of the outside air detected by the temperature / humidity sensor are set in the air chart table. An outside air state point setter, a main heating line that changes in a heating direction along an iso-absolute humidity line on an air line diagram from the outside air state point to an arbitrary state point on the target temperature and humidity line, and an air line. On the diagram, an adiabatic humidification line that changes in the humidification direction along the isenthalpy line, on the air line diagram, a cooling line that changes toward the cooling temperature set below the dew point temperature of the upper limit state point, and on the air line diagram Along the absolute humidity line Of the auxiliary heating line to remain in the heating direction I, the maximum two depending on the temperature and humidity regulator air conditioner has
A prediction line setting device that sets a state change prediction line in which the types of lines are connected in this order, and a main heating line, an adiabatic humidification line, a cooling line, and an auxiliary line based on the state change prediction line set by the prediction line setting device. The temperature at the end of the heating line is determined by the main heating device of the air conditioner,
A target outlet temperature setting device is provided which outputs the target outlet temperature of the adiabatic humidifier, the cooling device, and the auxiliary heating device to each of the capacity control devices.

According to the present invention, first, an air line chart in which a target temperature and humidity line connecting an upper limit state point determined by an upper limit temperature and an upper limit humidity of conditioned air and a lower limit state point determined by a lower limit temperature and a lower limit humidity is set. Above, an outside air state point determined by the temperature and humidity of the outside air is set. Next, from the outside air state point to an arbitrary state point on the target temperature / humidity line (for example, the closest state point), a main heating line that changes in a heating direction along an iso-absolute humidity line on the psychrometric chart, and air Adiabatic humidification line that changes in the humidification direction along the isenthalpy line on the diagram,
Of the cooling line that changes toward the cooling temperature set below the dew point temperature of the upper limit state point on the psychrometric chart, and the auxiliary heating line that changes in the heating direction along the iso-absolute humidity line on the psychrometric chart, A state change prediction line in which two types of lines are connected in this order is set. Then, based on the state change prediction line, the end point temperatures of the main heating line, the adiabatic humidification line, the cooling line, and the auxiliary heating line are set as target outlet temperatures of the main heating device, the adiabatic humidification device, the cooling device, and the auxiliary heating device, It is set according to the outside air state point.

Therefore, if the target outlet temperature is output to each capacity control device of an existing air conditioner equipped with a main heating device, an adiabatic humidifier, a cooling device, and an auxiliary heating device as a temperature and humidity controller, each of the capacity control devices is output. In, the capacity of each temperature and humidity adjustment device is independently feedback controlled so that each outlet temperature matches each target outlet temperature. At this time, the respective target outlet temperatures are not set by monitoring the temperature and humidity at the outlet of the air conditioner. Since the temperature is set to an optimal value, the temperature is controlled stably and with good responsiveness, thereby saving energy and reducing running costs. Here, the adiabatic humidification by the adiabatic humidifier is not limited to the adiabatic humidification in a strict sense, but also includes a case where the enthalpy increases or decreases with some heat flow.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a temperature / humidity control device for an air conditioner according to the present invention, and FIG. 2 is an air line diagram showing the operation thereof. 3 and 5 are denoted by the same reference numerals, and detailed description is omitted.

The temperature / humidity control device 20 according to the present invention has a temperature / humidity sensor TH on its input side for detecting the temperature / humidity of the outside air.
_1, a capacity setter 10 for setting the capacity 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 of the air conditioner ₁ is connected to the output side thereof. on the basis of the temperature and humidity of the outside air detected by the temperature and humidity sensor TH _1, the heating capacity of each temperature and humidity adjusting apparatus 4-8 for heating / humidifying / cooling, humidification capacity is adapted to control the cooling capacity .

This temperature / humidity control device 20
The air chart table 21 stored in advance and the temperature and humidity of the conditioned air
The target temperature / humidity line L indicating the degree is stored in the air chart table 21.
The target temperature / humidity line setting device 22 to be set and the target temperature / humidity line L
Based on the psychrometric map based on a plurality of control areas C₁~ C_FourPartition
Control area setting device 23 and thermo-hygrometer TH ₁Detected by
Outside air state point A based on the temperature and humidity of the outside air₁~ A_FiveAir line
An outside air state point setter 24 set in the diagram table 21
Qi state point A₁~ A_FiveControl area C to which₁~ C_Four
Control area selector 25 for selecting the air conditioner and the outside air state point A₁~
A_FiveAnd the temperature and humidity change of the outside air based on the target temperature and humidity line L
State change expected line J₁ ~ J_Five Line setting device 26 for setting
And the state change prediction line J set by the prediction line setting unit 26 ₁
~ J_FiveBased on the main heating device 4, adiabatic humidification device 5, cooling equipment
6, set the target outlet temperature of the auxiliary heating device 7,
Target outlet temperature setter 27 that outputs to quantity setter 10
It has.

In the target temperature / humidity line setting unit 22, when an upper limit state point Ps defined by the upper limit temperature and the upper limit humidity of the conditioned air and a lower limit state point Pw defined by the lower limit temperature and the lower limit humidity are input, a line connecting these is formed. It is automatically set as the target temperature / humidity line L. Note that the upper limit state point Ps and the lower limit state point Pw
Is equal to the atmosphere in the painting booth in summer and winter, respectively. For example, the upper limit state point Ps is set to the upper limit temperature of 28 ° C. and the upper limit humidity of 75% (relative humidity), and the lower limit state point Pw is set to the upper limit temperature of 25 ° C. and the upper limit. Humidity is set to 75% (relative humidity).

In the control area setting unit 23, based on the target temperature / humidity line L, the upper limit state point Ps and the enthalpy are equal and the upper limit enthalpy line E extending from the upper limit state point Ps to the high temperature side is set.
s, the upper limit state point Ps is equal to the absolute humidity, and the upper limit state point P
s, the lower limit state point Pw and the enthalpy are equal, and the lower limit state point Pw is equal to the lower limit enthalpy line Ew, and the lower limit state point Pw is equal to the absolute humidity. Each boundary line of the lower limit absolute humidity line Hw extending to the low temperature side is set on the psychrometric chart table 21. Then, based on this, the psychrometric chart is partitioned by 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 by the upper limit enthalpy line Es, the lower limit enthalpy line Ew, and the target temperature / humidity line L. the interim low relative humidity control area C _2, a half high relative humidity controlled area C ₃ partitioned by the upper limit absolute humidity line Hs, lower absolute humidity line Hw and the target temperature and humidity line L, the upper limit enthalpy 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 anticipation line setting unit 26 calculates the outside air state points A ₁ to A ₁ .
From A ₅ up to the nearest state point on the target temperature and humidity line L, isenthalpic line and main heating line J _T to remain in the heating direction along a psychrometric chart to equal absolute humidity line, a psychrometric chart and adiabatic humidifier line J _H to remain in the humidifying direction along a cooling line J _C to remain towards the cooling temperature Tc which is set a psychrometric diagram below the dew point temperature of the upper limit state point P _S, psychrometric chart auxiliary heating line J _t to remain in the heating direction along the equal absolute humidity line on
Of, sets the state change estimated line J ₁ through J ₅ linked up two lines in this order. For this example, stores a control procedure corresponding to the control area C ₁ -C ₄ the outside air state point A ₁ to A ₅ belonging previously cold-life 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 , since the outside air state point A ₁ has a lower enthalpy and a lower absolute humidity than the lower limit state point Pw, the enthalpy is increased by the heating operation, and the absolute humidity is reduced by the adiabatic humidification operation. Need to be higher. Therefore, the low-temperature control procedure setter S ₁ includes the lower limit enthalpy line Ew along the iso-absolute humidity line on the air line diagram from the outside air state point A ₁ to the lower limit state point Pw.
The expected state change line J is formed by connecting a main heating line J _T that changes in the heating direction up to the heating direction and an adiabatic humidification line J _H that changes in the humidifying direction along the isenthalpy line to the lower limit state point on the psychrometric chart in this order.
₁ is set.

In the intermediate period low relative humidity control area C ₂ ,
Since the outside air state point A ₂ has the same enthalpy as any state point on the target temperature / humidity line L and has only a low relative humidity, it is necessary to humidify in an isenthalpy manner by an adiabatic humidification operation. Therefore, the intermediate period low relative humidity control procedure setting device S ₂
The, from the outside air state point A ₂ up to the target temperature and humidity line L,
Adiabatic humidifier line J _H to remain in the humidifying direction along a psychrometric chart to isenthalpic line is set as a state change estimated line J _2.

In the intermediate period high relative humidity control area C ₃ ,
Outside air state point A ₃ equal absolute humidity in either state point on the target temperature and humidity line L, because 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 upper state point is small, it is difficult to control the temperature with the main heating device 4 having a large heating capacity. 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
The, from the outside air state point A ₃ to reach the target temperature and humidity line L,
Auxiliary heating line J _t to remain in the heating direction along a psychrometric chart to equal absolute humidity line is set as a state change estimated line J _3.

In the high temperature control area C ₄ , the outside air state points A ₄ and A ₅ have higher enthalpy or higher absolute humidity than the upper limit state point Ps. Therefore, even if it is necessary to perform a cooling operation, it is not necessary to increase enthalpy by a heating operation. Then, when the outside air state point A ₄ is high and the absolute humidity is lower enthalpy than the upper limit state point Ps, it is necessary to humidify advance in anticipation of allowances dehumidified by the cooling operation.
Also, when the humidity of the outside air state point A ₅ is sufficiently high, dehumidified by the cooling operation, it is necessary to heat the heating operation the amount corresponding to the supercooled. Therefore, the high temperature period control area C _4, humidified border Hc through the cooling temperature cooling state point of 100% relative humidity at Tc Pc and the upper limit state point Ps of the cooling device 6
The low humidity area d on the low humidity side from the boundary line Hc
_1, previously divided into the high humidity area d ₂ of high humidity side, when the outside air state point A ₄ is in a low humidity area d _1, after increasing the absolute humidity by adiabatic humidification operation, dehumidification cooling by the cooling operation when the outside air state point a ₅ is in a high humidity area d _2, after dehumidification cooled by a cooling operation, it may be heated by the heating operation.

Therefore, the high-temperature period control procedure setting device S_Four
Has an outside air state point A_FourIs low humidity area d₁When in
Control procedure and outside air state point A_FiveIs high humidity area d_TwoIt is in
Each control procedure is set. And outside air
Attitude A_FourIs low humidity area d₁, The outside air state point
From the point of time to the upper limit state point Ps on the psychrometric chart.
Transition in the humidification direction along the rupi line to the humidification boundary line Hc
Adiabatic humidification line J_HOn the humidification boundary line Hc in the cooling direction
The cooling line J changes to the upper limit state point Ps_CIn this order
Predicted state change line J _FourIs controlled along. Also,
Outside air state point A_FiveIs high humidity area d_TwoWhen in
From the state point to the upper limit state point Ps, the cooling
100% relative humidity at the cooling temperature Tc of the cooling device 6
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 changes in the heating direction up to point Ps_tIn this order
Expected state change line J_FiveIs controlled along.

Then, the prediction line setting device 2
When the state change estimated line J ₁ through J ₅ are set at 6, on this basis, the target outlet temperature setter 27, the main heater 4,
The target outlet temperatures of the adiabatic humidifier 5, the cooling device 6, and the auxiliary heating device 7 are set. In this case, the state change estimated line J ₁ through J ₅ each, the main end point temperature of the heating line J _T is the main heating device 4 of the target outlet temperature, the target outlet end point temperature of the adiabatic humidifier 5 of adiabatic humidifier line J _H temperature, the target outlet temperature of the endpoint temperature of the cooling line J _C a cooling device 6, endpoint temperature of the auxiliary heating line J _t is the target outlet temperature of the auxiliary main heating device 7. Then, the target outlet temperature of each of the thus set is outputted to each of the displacement control device 11 to 14 of the capacitance setting circuit 10, the capacity control device 11 to 14 In the temperature sensor T ₁ through T
The respective capacities are feedback-controlled so that the outlet temperature detected in ₄ matches the target outlet temperature.

The above is an example of the configuration of the present invention, and its operation will be described next. First, on the psychrometric chart recorded in the psychrometric chart table 21, the upper limit state point Ps of 28 ° C. and the relative humidity of 75%, which is the atmosphere of the painting booth in summer, and the temperature of 20 ° C., which is the atmosphere of the coating booth in winter, are shown. 75% relative humidity
Is set, the target temperature and humidity line setting device 2
2, a 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 setting unit 23 performs control in the low temperature control area C ₁ , which mainly performs control in winter, and mainly in the low humidity period in spring / autumn. Interim 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. Each of the control areas C _{1 to} C ₄ includes an upper limit enthalpy line Es having the same enthalpy as the upper limit state point Ps and extending from the upper limit state point Ps to the high temperature side, and an upper limit state point Ps having the same absolute humidity as the upper limit state point Ps and having a lower temperature range from the upper limit state point Ps. Extended upper limit absolute humidity line H
s, a lower limit enthalpy line Ew where the lower limit state point Pw and the enthalpy are equal and extend from the lower limit state point Pw to the high temperature side, and a lower limit absolute humidity line Hw where the lower limit state point Pw and the absolute humidity are equal and the lower limit state point Pw extends to the lower temperature side. It is partitioned. Also,
The high-temperature period control area C ₄ is defined by a low-humidity side lower than the humidification boundary line Hc with a humidification boundary line Hc passing through a cooling state point Pc of 100% relative humidity and an upper-limit state point Ps at a cooling temperature Tc of the cooling device 6. humidity area d _1, is divided into a high humidity area d ₂ of 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 winter, the outside air state point A ₁ is often included in the low-temperature period control area C ₁ , and in this case, the low-temperature period control procedure setter S ₁ changes the outside air state point A ₁ to the lower limit state point Pw. Until the main heating line J _T changes in the heating direction along the iso-absolute humidity line on the psychrometric chart, and the adiabatic humidifying line J _H changes in the humidifying direction along the iso-enthalpy line on the psychrometric chart.
The state change estimated line J ₁ which connects in this order is set. Then, in the target outlet temperature setting device 27, the state change prediction line J
₁ of the temperature of the end point (the main point heating line J _T crosses the lower enthalpy Ew) B ₁ of the main heating line J _T is set as the target outlet temperature of the main heating device 4, the adiabatic humidifier line J _H endpoint (lower The temperature at the state point Pw) is set as the target outlet temperature of the adiabatic humidifier 5, and the respective target outlet temperatures are output to the main heating device 4 and the capacity controllers 11 and 12 of the adiabatic humidifier 5. Thereby, first, in the main heating capacity control device 11,
Heating capacity is feedback controlled so that the outlet temperature of the main heating device 4 detected by the temperature sensor T ₁ is to match the temperature of the end point B ₁ of the main heating line J _T, then the humidifier capacity control device 12, a temperature sensor outlet temperature of the detected adiabatic humidifier 5 by T ₂ is adiabatic humidifier line J _H endpoint (lower state point P
humidifying capacity to match the temperature of w) are feedback-controlled, the outside air state point A ₁ is remained along the state change estimated line J _1, it reaches the lower limit state point Pw. In this case, the cooling device 6 is allowed to stop, the auxiliary heating device 7 and the auxiliary humidifier 8 is provided with a temperature and humidity in accordance with the detection result of the temperature and humidity meter TH ₂ for fine-tuning, a minimum heating capacity And it is operated in the idling state of the minimum humidification capacity.

On the day when the relative humidity is low in the spring / autumn season, the outside air state point A ₂ is set to the intermediate low relative humidity control area C _2.
Often is included in, this case, the interim low relative humidity control procedure setter S _2, from the outside air state point A ₂ up to the target temperature and humidity lines L, along a psychrometric chart to isenthalpic line adiabatic humidifier line J _H to remain in the humidifying direction is set as a state change estimated line J ₂ as it is. Then, the target outlet temperature setter 27, the adiabatic humidifier line state changes estimated line J ₂ J
_The temperature at the end point _H (state point on the target temperature / humidity line L) B ₂ is set as the target outlet temperature of the adiabatic humidifier 5, and is output to the capacity control device 12 of the adiabatic humidifier 5. Thus, the humidification capacity control device 12, the humidifying capacity as the exit temperature of the adiabatic humidifier 5 detected by the temperature sensor T ₂ is equal to the temperature of the end point B ₂ of the adiabatic humidifier line J _H is feedback-controlled, the outside air The state point A ₂ is a state change expected line J ₂
Transitions to state point B ₂ on the target temperature and humidity line L along.
In this case, the main heating device 4 and cooling device 6 is allowed to stop, the auxiliary heating device 7 and the auxiliary humidifier 8, the temperature and humidity in accordance with the detection result of the temperature and humidity meter TH ₂ to fine tune Be prepared and operated in the idling state with the minimum heating capacity and the minimum humidification capacity.

Further, on the day when the relative humidity is high in the spring / autumn season, the outside air state point A ₃ is set to the intermediate high relative humidity control area C _3.
In this case, in this case, the intermediate-stage high relative humidity control procedure setting device S ₂ is used to move along the iso-absolute humidity line on the psychrometric chart from the outside air state point A ₃ to the target temperature / humidity line L. state change auxiliary heating line J _t to remain in the heating direction estimated line J ₃
Is set as Here, when the main heating device 4 attempts 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,
Temperature end point (state point on the target temperature and humidity line L) B ₃ of the auxiliary heating line J _t state change estimated line J ₃ is set as the target outlet temperature of the auxiliary heating device 7, which is the auxiliary heating capacity control device 14 Is output. Thus, the auxiliary heating capacity control device 14, auxiliary heater detected by the temperature sensor T ₄ 7
Heating capacity as the outlet temperature is equal to the temperature of the end point B ₃ of the auxiliary heating line J _t are feedback controlled, the outside air state point A ₃ along the state change estimated line J ₃ target temperature and humidity line L
To transition to state point B ₃ of the above. In this case, the main heating device 4 and the cooling device 6 are stopped, and the adiabatic humidification device 5 is operated in an idling state with a minimum humidification capacity to remove dust and dust contained in the outside air. 8
It is provided to finely adjust the humidity 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.

Further, in summer, the outside air state point A ₄ ,
A ₅ is often included in the high temperature period control area C _4. 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 setting device S
By _4, from the outside air state point A ₄ up to the upper limit state point Ps, along a psychrometric chart to isenthalpic line humidified border H
and adiabatic humidifier line J _H to remain in the humidifying direction to c, the cooling line J _C state changes estimated line J ₄ which connects in this order setting on humidifying boundary Hc toward the cooling direction transitions to the upper limit state point Ps Is done. Then, the target outlet temperature setter 27, the end point of the adiabatic humidifier line J _H state change estimated line J ₄ (that adiabatic humidifier line J _H crosses the humidification boundary Hc) temperature B ₄ is adiabatic humidifier 5 goals The outlet temperature is set, and the temperature at the end point (upper limit state point Ps) of the cooling line _JC is set as the target outlet temperature of the cooling device 6, and the respective target outlet temperatures are the capacity control devices of the adiabatic humidifying device 5 and the cooling device 6. Output to 12 and 13. Thus, first, in the humidification capacity control device 12, the humidification capacity is feedback controlled so that the outlet temperature of the adiabatic humidifier 5 detected by the temperature sensor T ₂ is equal to the temperature of the end point B ₄ of the adiabatic humidifier line J _H then, 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 are matched to the end temperature of the cooling line Jc (upper temperature limit state point Ps) , The outside air state point A ₄ reaches the upper limit state point Ps along the predicted state change 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 Operate in idling state.

The outside air state point A ₅ is set in the control area C ₄
Is contained in the high humidity area d ₂ , the high temperature control procedure setter S ₄ moves the cooling temperature T of the cooling device 6 on the air line diagram from the outside air state point A ₅ to the upper limit state point Ps.
c, a cooling line J _C that changes to the upper limit absolute humidity line Hs toward the cooling state point Pc at a relative humidity of 100%, and an auxiliary heating line J that changes in the heating direction along the upper limit absolute humidity line Hs to the upper limit state point Ps. state change expected line J ₅ that connects the _t in this order is set. Then, the target outlet temperature setting device 27
In the end point of the cooling line J _C state change estimated line J ₅ (that cooling line J _C crosses the upper limit absolute humidity line Hs) temperature B ₅ is set as a target exit temperature of the cooling device 6, the auxiliary heating line J
The temperature at the end point of _t (upper limit state point Ps) 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. Thus, firstly, the cooling capacity control device 13, the cooling capacity as the outlet temperature of the detected cooling device 6 at a temperature sensor T ₃ is equal to the temperature of the end point B ₅ cooling line Jc is feedback-controlled, then in the auxiliary heating capacity control device 14, the heating capacity is feedback controlled so that the outlet temperature of the temperature sensor T ₄ at the detected auxiliary heating device 7 is matched to the temperature of the end point of the auxiliary heating line J _t (upper state point Ps) outside air state point a ₅ are, transitions to the upper limit state point Ps along a state change estimated line J _5. In this case, the main heating device 4 is stopped, and the adiabatic humidification device 5 is operated in an idling state with a minimum humidification capacity to remove dust and dust contained in the outside air.
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 the present embodiment, 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 reduced. Not only can it be set simply and accurately irrespective of other control amounts, but also the feedback speed is controlled based on the outlet temperature of each device 4 to 7 so that its response speed is fast and any Temperature and humidity can be accurately controlled to the state point. In addition, since the control is performed in accordance with the preset state change prediction lines J _{1 to} J ₅ , unnecessary control operations are not performed, and energy saving is achieved.
This contributes to low running costs.

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 each of the heating / humidifying devices 4 to 7 used in each of the control areas C _{1 to} C _4. 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. by drawing a state change estimated line J ₁ through J ₅ up to the point, if while selecting each temperature and humidity adjusting apparatus 4-7 to be used, sets the outlet target temperature of each capacity control device 11 to 14 It may be.

In addition, the psychrometric chart is divided into 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 phase control area C ₄ is the boundary of humidification border Hc based on the cooling temperature Tc of the cooling device 6, but further divided into two control areas d _1, d _2, another control areas C ₁ ~ C ₃ may also each other further subdivided in the same manner as the high temperature phase control area C _4.

Further, in the above description, the main heating device 4, the adiabatic humidification device 5, the cooling device 6,
The case in which the auxiliary heating device 7 and the auxiliary humidifying device 8 are provided has been described. However, the present invention is not limited to this. For example, an air conditioner without the cooling device 6 in a cold region, or a main heating device in a warm / tropical region specification An air conditioner without the device 4 can also be used. 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 set to the high temperature period control area C _4.
, The control becomes impossible, but since the air conditioner is originally installed in an area where the outside air condition points A ₄ and A ₅ cannot exist in such a control area C ₄ , there is no inconvenience. Furthermore, the upper limit state point Ps and the lower limit state point Pw are not necessarily set separately, but may be set as the same state point. In this case, the target temperature / humidity line L becomes one point. , therefore, half the low relative humidity control area C ₂ and half high relative humidity controlled area C ₃
Disappears.

[0041]

As described above, according to the present invention, an optimum state change prediction line is automatically determined based on the outside air state point determined by the outside air temperature and humidity and a preset target temperature and humidity line. Based on this, a device to be used for temperature / humidity control is selected from among a main heating device, an adiabatic humidifier, a cooling device, and an auxiliary heating device installed in the air conditioner as a temperature / humidity controller. The heating / humidification / cooling capacity of each device is adjusted so that the outlet temperature of the humidity controller matches the end temperatures of the main heating line, the adiabatic humidification line, the cooling line, and the auxiliary heating line of the preset state change prediction line. Independent control allows each control amount to be set easily and accurately irrespective of other control amounts. In addition, since unnecessary control operations are not required, the response speed is high, and energy loss is reduced. Minimize,
Therefore, there is an extremely excellent effect that the running cost can be reduced. Further, the control device according to the present invention is installed in an existing air conditioner, and controls the temperature and humidity by using the control device attached to the air conditioner as it is or by making a slight software change. Since only simple installation work is required and there is no need to modify an existing air conditioner, the cost of equipment associated with the modification is low and the construction period is extremely short.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a temperature and 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 view showing an air conditioner obtained by improving a conventional device.

FIG. 6 is a psychrometric chart showing the operation.

[Description of Signs] 1 ... Air Conditioning Device 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 Humidifying capacity control device 13 Cooling capacity control device 14 ··· Auxiliary heating capacity control device 20 ··· Temperature and humidity control device 21 ··· Pneumatic chart table 22 ··· Target temperature / humidity line setting device 23 ··· Control area setting device 24 ··· Outside air state point setter 25 Control area selector 26 Predicted line setter 27 Target outlet temperature setter S ₁ Low temperature control procedure setter S ₂ Middle Phase low relative humidity control procedure setting device S ₃・ ・ ・ Intermediate period high relative humidity control procedure setting device S ₄・ ・ ・ High temperature period control procedure setting device T H _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 Hs・ ・ ・ Upper limit absolute humidity line Ew ・ ・ ・ Lower limit enthalpy line Hw ・ ・ ・ Lower limit absolute humidity line Hc ・ ・ ・ Humidification boundary line C ₁・ ・ ・ Low temperature control area C ₂・ ・ ・ Intermediate low relative humidity control area C ₃ · · · half high relative humidity controlled area C ₄ · · · high temperature period 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 ····
State change estimated line J _T · · · main heat line J _H · · · adiabatic humidifier line J _C · · · cooling line J _t · · · auxiliary heating line Tc · · · cooling temperature Pc · · · cooling statepoints

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-5-288390 (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. A main heating device (4) having a variable heating capacity and an adiabatic humidifying device (5) having a variable humidification capacity as a temperature / humidity controller for adjusting the taken-in outside air to a preset temperature and humidity.
A cooling device (6) having a variable cooling capacity; and an auxiliary heating device (7) capable of finely adjusting the heating capacity. ) temperature sensor for measuring the temperature of air passing through the _(T 1 through T ₄₎ is provided at the outlet of each of the temperature and humidity regulator (4-7), said detected by the temperature sensors _(T 1 through T ₄₎ The set outlet temperature is compared with a preset target outlet temperature of each of the temperature and humidity controllers (4 to 7) to increase or decrease the capacity of each of the temperature and humidity controllers (4 to 7). An air conditioner temperature / humidity control device for controlling the temperature / humidity of an air conditioner (1) provided with 14), wherein a temperature / humidity sensor (TH ₁ ) for detecting the temperature and humidity of the outside air and an air chart are stored in advance. An air chart table (21) is provided, which is determined by the upper limit temperature and upper limit humidity of the conditioned air. The upper limit state point and (P _S), the lower limit temperature and the lower limit state point determined by limit humidity (P _W) target temperature and humidity line setting unit to set the connecting I target temperature and humidity line (L) a psychrometric chart table (21) (22) and said temperature and humidity sensor (TH ₁₎ outside air state point based on the temperature and humidity of the detected outside air _(a 1 to a ₅₎ of the outside air state point setter for setting a psychrometric chart table (21) ( 24) and from the outside air state point (A _{1 to} A ₅ ) to an arbitrary state point on the target temperature / humidity line (L) in the heating direction along the iso-absolute humidity line on the air line diagram. Main heating wire (J
And _T), adiabatic humidifier line to remain in the humidifying direction along a psychrometric chart to isenthalpic line with the (J _H), set the psychrometric diagram below the dew point temperature of the upper limit state point (P _S) cooling Of the cooling line (J _C ) moving toward the temperature (T _C ) and the auxiliary heating line (J _t ) moving in the heating direction along the iso-absolute humidity line on the psychrometric chart, the air conditioner (1) maximum two lines state changes estimated line which is connected in this order and (J 1 _{through J 5)} estimated line setter for setting (26), the expected depending on the temperature and humidity regulator (4-7) having the based on the line setting unit (26) set at state change estimated line _(J 1 through J _5), a main heating line _(J T), adiabatic humidification line _(J H), cooling line _(J C), the auxiliary heating line ( _Jt )
Of each of the capacity control devices (11) as target outlet temperatures of the main heating device (4), the adiabatic humidifier (5), the cooling device (6), and the auxiliary heating device (7) of the air conditioner (1). 14. A temperature and humidity control device for an air conditioner, comprising: a target outlet temperature setting device (27) that outputs the temperature to a target outlet. 2. An upper limit state point (PS) equal to an upper limit state point (P _S ) on the psychrometric chart based on the target temperature / humidity line (L) set by the target temperature / humidity line setting device (22). Upper limit enthalpy line (E _S ) extending from P _S ) to the high temperature side
And an upper limit absolute humidity line (H _S ) in which the upper limit state point (P _S ) is equal to the absolute humidity and extends from the upper limit state point (P _S ) to the low temperature side.
And the lower limit state point (P _W ) is equal to the enthalpy, the lower limit enthalpy line (E _W ) extending from the lower limit state point (P _W ) to the high temperature side, and the lower limit state point (P _W ) is equal to the absolute humidity and the lower limit state point (E A lower limit absolute humidity line (H _W ) extending from P _W ) to the lower temperature side is set, and the psychrometric chart is divided into a lower limit enthalpy line (E _W ) and a lower limit absolute humidity line (H _W ). (C ₁ ), the upper limit enthalpy line (E _S ),
An intermediate low relative humidity control area (C ₂ ) separated by a lower limit enthalpy line (E _W ) and a target temperature and humidity line (L), an upper limit absolute humidity line (H _S ), a lower limit absolute humidity line (H _W ), and a target An intermediate period high relative humidity control area (C ₃ ) separated by a temperature and humidity line (L) and a high temperature period control area (C ₄ ) separated by an upper limit enthalpy line (E _S ) and an upper limit absolute humidity line (H _S )
At least four control area setting unit to set the respective regions psychrometric chart table is divided into regions (21) and (23), the outside air state point set by the outside air state point setter (24) (A ₁ ~ of one control area a ₅₎ belongs _(C 1 _~C 4)
Together and a selecting control area selection unit (25), the estimated line setting unit (26), outdoor air state point _(A 1 ~
A ₅₎ belongs control area (C 1 _-C 4 temperature and humidity regulator for use in accordance _with) and prestored low temperature stage control procedure setter that step (S _1), interim low relative humidity control procedure setter (S ₂ ), an intermediate-stage high relative humidity control procedure setting device (S ₃ ), and a high-temperature control procedure setting device (S ₄ ), and the low-temperature control procedure setting device (S ₁ ) includes a temperature to be used. Main heating device (4) and adiabatic humidifier (5) as humidity controller
Is set, and as a control procedure, from the outside air state point (A ₁ ) to the lower limit state point (P _W ), the main heating line (J which changes in the heating direction along the iso-absolute humidity line on the air line diagram is used. _{T 1} ) and an adiabatic humidification line (J _H ) that changes in the humidification direction along the isoenthalpy line on the psychrometric chart in this order, and a state change prediction line (J ₁ ) is set. In the humidity control procedure setting device (S ₂ ), an adiabatic humidifier (5) is set as a temperature / humidity controller to be used, and as a control procedure, the temperature is changed from the outside air state point (A ₂ ) to the target temperature / humidity line (L). Adiabatic humidification line ( _JH ) that changes in the humidification direction along the isoenthalpy line on the psychrometric chart until
Is set as a state change prediction line (J ₂ ). In the intermediate period high relative humidity control procedure setting device (S ₃ ), an auxiliary heating device (7) is set as a temperature / humidity controller to be used, and control is performed. As a procedure, from the outside air state point (A ₃ ) to the target temperature / humidity line (L), an auxiliary heating line (J _t ) which changes in the heating direction along the iso-absolute humidity line on the psychrometric chart is a state change expected line. (J ₃ ), and the high-temperature period control procedure setting device (S ₄ ) includes an adiabatic humidifier (5), a cooling device (6), and a temperature / humidity controller to be used.
Together with an auxiliary heating device (7) is set, from the outside air state point as a control procedure _(A 4, _{A 5)} up to the upper limit state point _{(P S),} the adiabatic humidifier line and _{(J H),} psychrometric chart A cooling line (J _C ) that moves upward to a cooling temperature (T _C ) set below the dew point temperature of the upper limit state point (P _S ) and a heating direction along an iso-absolute humidity line on the psychrometric chart auxiliary heating line to remain within the (J _t), the maximum two lines state changes estimated line which is connected in this order _{(J 4,} J ₅₎ is so made claims 1 air conditioning system according as set Temperature and humidity control device.