JP2001272086A - Air conditioner, air conditioning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform energy saving operation effectively when an air conditioner and a fan are operated simultaneously. SOLUTION: The air conditioner comprises a ventilation means for introducing outdoor air into a room, means for detecting the temperature of outdoor air introduced from the ventilation means, means for detecting the humidity of outdoor air introduced from the ventilation means, means for detecting the temperature of air sucked from the room to an air conditioning means, means for detecting the humidity of air sucked from the room to an air conditioning means, means for detecting the temperature of air circulating through the room, means for detecting the humidity of air circulating through the room, and means for controlling the air conditioning means and the ventilation means based on the temperature and humidity detected by each detecting means. Since the temperature and humidity of indoor air are brought close to target levels, health air conditioning is realized while saving energy by utilizing outdoor air effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for energy-saving operation of an air conditioner. And a technology for reducing energy consumption using the temperature and humidity of outside air.

[0002]

2. Description of the Related Art FIG.
It shows the technology of the conventional air conditioner described in No.
111 is an air conditioner, and 1 has an indoor unit 1 attached to the ceiling of the room 2. Reference numeral 3 denotes an indoor heat exchanger for exchanging heat between the refrigerant flowing inside the tube and the air flowing outside the tube blown by the indoor fan 5.
00 is a ventilation fan of a ventilation fan that directly introduces air into the indoor unit 1, 7 is a refrigerant pipe that circulates refrigerant between the outdoor heat exchanger 25 and the indoor heat exchanger 3 housed in the outdoor unit 8. , 18 is an outside air temperature sensor which is housed in the outdoor unit 8 and measures an outdoor temperature, and 19 is a room temperature sensor which is provided in the vicinity of a suction grill 35 for sucking air circulating in the room and measures an indoor air temperature which is a suction temperature. , 21 are wall surfaces forming a room together with the floor surface, 34 is a blowout grill for blowing air from the indoor unit 1, 110
Is a duct opened and closed by a duct damper to ventilate the indoor unit.

In the configuration shown in FIG. 32, an indoor unit 1 of an air conditioner embedded in a ceiling is embedded in a ceiling or the like, and an indoor fan 5 such as a cross flow fan and a heat exchanger 3 are mounted inside the indoor unit. The inlet grill 35 and the outlet grill 34 are respectively opened on the upstream and downstream sides of the indoor heat exchanger 3 of the decorative panel provided on the facing part.
By the rotation of the indoor fan 5, a circulating wind is formed in the room. A ventilation fan 10 is provided in the ventilation passage on the upstream side of the indoor heat exchanger 3.
A duct 110 provided with a zero is connected to be able to communicate with the outside. The outside air is selectively introduced by a duct damper which is turned on and off in conjunction with the on / off control of the ventilation fan.

The indoor unit 1 of the conventional ceiling-mounted air conditioner has a room temperature sensor 19 for detecting a room temperature and an indoor controller having a built-in control device such as a microcomputer installed therein. The indoor controller reads the room temperature detection value detected by the room temperature sensor 19 and the room temperature set value set in advance by a room temperature setting device such as a remote controller, and performs an operation necessary for setting the room temperature detection value to the room temperature set value. The frequency signal is provided to the outdoor unit 8. In the outdoor unit 8, this signal is given to an outdoor controller constituted by, for example, a microprocessor or the like, and the operation of the built-in compressor is similarly controlled and controlled by the outdoor controller, and the refrigerant is discharged from the outdoor heat exchanger 25. It is sent to the indoor heat exchanger 3 via the pipe 7. Further, when the ventilation operation is selected by a remote controller or the like, the indoor controller gives an ON signal to the ventilation fan 31 and the duct damper so as to operate to introduce fresh outside air into the indoor unit 1.

The temperature of the outside air to be introduced is determined by an outside air temperature sensor 18.
The value detected by the room temperature detection sensor 19 is corrected according to the outside air temperature detected by the outside air temperature sensor 18. Since operations such as heating and cooling of the air conditioner are performed at the detected room temperature, the operation according to the fluctuation of the outside air temperature can be performed by using the room temperature corrected by the outside air. This temperature correction is a corrected temperature obtained by multiplying the amount of air blown into the room by the detected value of the room temperature and multiplying the amount of outside air introduced by the detected value of the outside air temperature by the sum of the respective airflows.

On the other hand, Japanese Patent Application Laid-Open No. 60-1985 discloses a conventional technique for measuring the temperature and humidity of the outside air and the temperature and humidity of the room to perform air conditioning.
A technique as disclosed in Japanese Patent No. 232445 is known. In this case, the air conditioner and the ventilation fan are separately provided, and first, it is determined whether the indoor temperature is higher than a set value, that is, it is determined whether the room temperature control is necessary, and the air conditioner is cooled.
However, if the indoor temperature is higher than the set value, the air conditioner is operated for dehumidification, or if the indoor absolute humidity is higher than the outside air humidity, the air conditioner is not operated and the ventilation fan is operated. The absolute humidity is obtained by converting the input relative humidity from the humidity sensor together with the detected temperature on the psychrometric chart to obtain the absolute humidity.

[0007]

However, when air conditioning, for example, heating and humidification, is performed, processing for sensible heat for raising only the temperature and processing for latent heat for raising only the humidity are performed simultaneously. Regarding this, for example, a book published on April 20, 1987 from the above-mentioned literature Yokendo,
Refrigeration and Air Conditioning, 17th Edition, page 210, shows diagrams before and after heating and humidification on a diagram together with sensible latent heat. Therefore, when the introduction of ventilation is controlled only by the air temperature, when the outside air temperature is lower than the room temperature but the outside air humidity is lower than the room humidity, the indoor humidity increases, and in order to reduce the humidity, A problem arises in that the refrigeration cycle tries to reduce indoor water vapor components and wasteful work is performed in the air conditioner. When the temperature and humidity are detected and the air conditioner and the ventilation fan are individually controlled in accordance with the detected values, that is, the temperature is adjusted by the air conditioner by comparing the indoor temperature with the set value, and the humidity is controlled between the outside and the inside. In comparison, performing only humidity control with a ventilation fan has a problem in that the intake of fresh outside air is greatly restricted and the energy of the outside air cannot be used effectively, causing the air conditioner to operate wastefully. In addition, we fix air volume of ventilation fan,
If the operation is performed based on comparison of only the absolute humidity, there is a problem that useless work is performed in the refrigeration cycle in the same manner as described above. Furthermore, in the conventional control that follows the individual figures of the resulting temperature and humidity, only the equipment used is specified, and the control of other equipment that adjusts other types of cooling, heating, humidifying, and humidifying. It has nothing to do with it and cannot take into account the effects of other equipment with various characteristics.
Further, there is a problem that air quality cannot be improved in consideration of energy efficiency.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and aims at performing comfortable air conditioning while introducing fresh outside air by ventilation. The present invention also relates to an apparatus and a method for improving air quality in consideration of energy efficiency. Furthermore, the present invention relates to a simple control method for integrally controlling temperature and humidity.

[0009]

According to a first aspect of the present invention, there is provided an indoor air supply system having a suction port and a discharge port in a room, wherein indoor air is sucked from the suction port by a blower, and blown out from the discharge port to circulate. Air conditioning means for performing air conditioning by changing the temperature and humidity, an opening for introducing outside air from outside to the room or exhausting air from the room to the outside, and an opening / closing means for opening and closing the opening or a ventilation adjusting means for adjusting the amount of ventilation Ventilation means having, outside air temperature detection means for detecting the temperature of the outside air introduced from the ventilation means, and outside air humidity detection means for detecting the humidity of the outside air introduced from the ventilation means,
Suction temperature detecting means for detecting the temperature of the air sucked into the air conditioner from the room, indoor heat exchanger temperature detecting means for detecting the temperature of the indoor heat exchanger of the air conditioner, and a room for detecting the temperature of the air circulating in the room At least one of the temperature detecting means, the outside air temperature detecting means, the outside air humidity detecting means, the suction temperature detecting means, and the temperature and humidity detected from at least one of the indoor heat exchanger temperature detecting means and the indoor temperature detecting means. Control means for controlling the harmony means and the ventilation means, so that the temperature of the room air approaches the target temperature.

According to a second aspect of the present invention, the temperature and humidity of room air having a suction port and a discharge port in a room, wherein room air is sucked from the suction port by a blower and blown out from the discharge port to circulate are changed. Air conditioning means for performing air conditioning by letting the outside air be introduced into the room from the outside or exhausting air from the room to the outside, and ventilation means having opening / closing means for opening / closing this opening or ventilation adjusting means for adjusting the amount of ventilation. Detecting the temperature of the outside air introduced from the ventilation means, detecting the humidity of the outside air introduced from the ventilation means, detecting the temperature of the air taken into the air conditioning means from the room Suction temperature detection means, suction humidity detection means for detecting the humidity of air sucked into the air conditioning means from the room, and an indoor room for detecting the temperature of air circulating in the room Temperature detection means, indoor humidity detection means for detecting the humidity of air circulating in the room, outside air temperature detection means, outside air humidity detection means, suction temperature detection means, suction humidity detection means, indoor temperature detection means, and indoor humidity detection A control means for controlling the air conditioning means and the ventilation means based on the temperature and humidity detected by the means, so that the temperature and humidity of the indoor air are brought close to the target values of temperature and humidity.

According to a third aspect of the present invention, the control means performs the control while relating the detected temperature and humidity of each air.

An indoor temperature detecting means for detecting the temperature of the air circulating in the room according to the present invention, and
At least one of the indoor humidity detecting means for detecting the humidity of the air circulating indoors detects at least one of the temperature and the humidity of the air circulating indoors near the outlet.

According to a fifth aspect of the present invention, there is provided at least an indoor temperature detecting means for detecting a temperature of air circulating in a room, and an indoor humidity detecting means for detecting humidity of air circulating in a room. One is for detecting at least one of the temperature and the humidity of the mixed air of the air introduced from the ventilation means and the air blown out from the outlet.

According to a sixth aspect of the present invention, there is provided a ventilating means provided with an air blowing means capable of performing both ventilation from the outside to the room and exhaust from the room to the outside.

The ventilating means of the present invention according to claim 7 is a ventilation fan capable of exchanging heat.

According to the present invention, the indoor air is circulated by an air conditioner having an intake port and a discharge port in the room, wherein the air is sucked from a suction port by a blower and blown out from the discharge port. Performing air conditioning by changing the temperature and humidity of the air, and adjusting an opening for introducing outside air from outside to the room or exhausting air from the room to the outside, and an opening / closing means for opening / closing the opening or an amount of air passing through the opening. Ventilating between the outside and the room with ventilation means having a ventilation adjusting means to perform, the temperature of the outside air, the humidity of the outside air, the temperature of the air sucked into the air conditioner from the room, and the room of the air conditioner Detecting the temperature of the heat exchanger or the temperature of the air circulating in the room,
The air-conditioning means and the ventilation means are controlled based on the detected temperature and humidity, and the temperature and humidity are integrally changed so that the temperature and humidity of the indoor air approach the target values of temperature and humidity.

According to a ninth aspect of the present invention, there is provided a method of determining the enthalpy of the outside air and the enthalpy of the air sucked into the air conditioner from the room, and comparing both the enthalpies, When the refrigeration cycle is lower than the enthalpy, the outside air is introduced into the room by the ventilation means and the refrigeration cycle is operated under predetermined conditions.

According to a tenth aspect of the present invention, there is provided a method for determining an enthalpy of air circulating in a room and an enthalpy of air sucked from a room into an air conditioner, and determining an indoor load from both enthalpies. A step of obtaining the target temperature and humidity of the air circulating in the room from the target values of the temperature and humidity and the temperature and humidity of the air sucked into the air conditioner from the room; Operating the cycle under predetermined conditions.

The present invention according to claim 11, comprising a step of detecting the temperature and humidity of the air taken in by an air conditioner having an air inlet in the room and performing air conditioning by sucking room air from the air inlet through a blower; A step of detecting the temperature and humidity of air that is blown out from the outlet of the air conditioner into the room and circulated into the room; a step of detecting the temperature and humidity of outside air that introduces outside air into the room from outside; and a target value of the indoor air. Setting the temperature and humidity, and the temperature and humidity of the air in which the indoor air and the outside air are directly sucked into the indoor heat exchanger to achieve the target value of the indoor air and reduce the energy of the refrigeration cycle. Setting the target value of

According to a twelfth aspect of the present invention, a step of detecting the temperature and humidity of the air taken in by an air conditioner having an air inlet in the room and performing air conditioning by sucking room air from the air inlet by a blower, Detecting the temperature, humidity, and air volume of air blown out from the air outlet of the air conditioner into the room and circulating in the room; detecting the temperature, humidity, and air volume of outside air for introducing outside air into the room from outside; Setting the temperature and humidity, which are the target values of the air, and the target values of the temperature and humidity of the air blown directly from the indoor heat exchanger to achieve the target values of the indoor air and reduce the energy of the refrigeration cycle And the step of setting

According to a thirteenth aspect of the present invention, there is provided a method of operating the air conditioner by setting the evaporation temperature of the refrigeration cycle to a predetermined value or setting the sensible heat ratio to a predetermined value. It is a thing.

According to a fourteenth aspect of the present invention, the difference in enthalpy between the temperature and the humidity of the air directly sucked into the indoor heat exchanger and the temperature and the humidity of the air directly blown from the indoor heat exchanger is reduced. It operates a refrigeration cycle.

According to a fifteenth aspect of the present invention, the temperature and humidity of room air having a suction port and a discharge port in the room, and circulating the room air from the suction port by the blower and blowing out from the discharge port, are changed. Air conditioning means for performing air conditioning by an indoor heat exchanger, an opening for introducing outside air from the outside to the room or exhausting air from the room to the outside, and opening / closing means for opening / closing the opening or adjusting the amount of air passing through the opening. Ventilation means having ventilation adjustment means, outside air temperature detection means for detecting the temperature of the outside air introduced from the ventilation means, outside air humidity detection means for detecting the humidity of the outside air introduced from the ventilation means, and indoor air conditioning means Suction temperature detecting means for detecting the temperature of the air sucked from the room, indoor suction temperature setting means for setting a target temperature of the indoor air, and a target humidity of the indoor air Indoor suction humidity setting means to be set, and control means for calculating the enthalpy from the temperature and humidity of the outside air and the suction air and controlling the air conditioning means and the ventilation means with the calculated enthalpy, and setting the temperature of the indoor air to a target value. Is to approach a certain temperature.

According to a sixteenth aspect of the present invention, there is provided a room having a suction port and a blow-out port, in which room air is sucked from the suction port by the rotation of the blower and blown out from the blow-out port, and the indoor temperature and humidity are changed by the heat exchanger. Air conditioning means that performs operations such as cooling or heating by changing the capacity of the air conditioner, and is connected to the air conditioning means, and adjusts the rotation of the blower and the capacity of the heat exchanger so that the indoor temperature and humidity are target values. A target value setting means for setting at least one of temperature and humidity, and a target value set by the target value setting means as a zone comprising a plurality of bands, and a target value according to an operation state of the air conditioning means. The width of the zone can be selected from a plurality of bands.

According to a seventeenth aspect of the present invention, a room has a suction port and a discharge port, and the indoor air is sucked from the suction port by the rotation of the blower and blown out from the discharge port to exchange the temperature and humidity in the room. Air conditioning means for performing operations such as cooling and heating by changing the capacity of the vessel, ventilation means for ventilating the room having an opening through which air can pass between the room and the outside and a ventilation fan for ventilating the air, Control means connected to the harmony means and the ventilation means, for controlling the rotation of the blower and the capacity of the heat exchanger and the rotation of the ventilation fan to control the temperature and humidity in the room so as to approach the target values of temperature and humidity; and , Air can be blown from the air conditioning means or the ventilation means to another place or another room via a duct, and the blowing means and the ventilation means are controlled by the control means for temperature and humidity. A is intended to control together.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, an air conditioner and an air conditioning method according to Embodiment 1 of the present invention will be described. FIG. 1 is an overall configuration diagram showing an air conditioner according to Embodiment 1 of the present invention. FIG. 2 shows an example of a configuration of an existing energy-efficient vapor compression refrigeration cycle for obtaining cold or warm heat. It is a refrigerant circuit diagram shown.
The present invention is an air conditioner that cools or heats indoor air by performing air conditioning so that the temperature or humidity of indoor air approaches the target values of temperature and humidity, and introduces fresh outdoor air. Air conditioning is performed so that a comfortable indoor space can be obtained by effectively using the room. In particular, when the air conditioner is operated and controlled when the outside air is positively used, the air humidity is considered together with the air temperature. The basis for controlling the air temperature and the air humidity while associating them with each other is a well-known wet psychrometric chart. Hereinafter, this psychrometric chart will be described briefly. FIG. 3 is a diagram showing the outline of a wet psychrometric chart described on page 199 of a document (“Frozen and Air Conditioning”, 17th edition, published on April 20, 1987, by Yokendo). The psychrometric chart is a diagram showing the state of humid air, which is general air. The enthalpy i of the humid air and the absolute humidity x
Are plotted on an oblique axis, and related data such as temperature are summarized assuming that the atmospheric pressure is constant at 760 mmHg.
If the dry-bulb temperature is constant, i and x can be represented by a linear relationship, and the isothermal line (t-line) is a straight line. The angle between the isenthalpy line (i-line) and the x-ray is determined so that the memory of i and x is appropriately selected so that the line at t = 0 ° C. is orthogonal to the x-ray. It also describes the relationship between absolute humidity and relative humidity, the relationship between sensible heat and latent heat, and the like. Note that the horizontal axis represents temperature, and the vertical axis is substantially orthogonal to the absolute humidity. A curve H is called a saturation line, and shows the absolute humidity and the temperature when the relative humidity is 100%. In the region to the right of the saturation line, the water vapor is in the state of superheated steam, and it is understood that when the temperature of the air decreases and the superheated steam is cooled, condensation starts at the saturation line. In this way, the change in the state of the humid air can be easily known in the humid air chart, and the outside air is positively introduced into the room based on the outside air state and the indoor air state actually detected based on this. Use effectively for air conditioning.

In FIG. 1, reference numeral 1 denotes an indoor unit of an air conditioner mounted on a wall of a room, and 2 denotes a room to be air-conditioned. 3 is an indoor heat exchanger, 4 is a heating means, 5 is an indoor fan, and 6 is outside air introduction means for introducing outside air into the room, for example, in the indoor unit 1, and is attached to, for example, an opening penetrated through a wall surface of the room. In addition, it has a fan 31 for sucking outside air and a damper 67 as an outside air inlet opening / closing mechanism. The indoor unit 1 incorporates an indoor heat exchanger 3, a heating means 4, an indoor fan 5, and an outside air introduction means 6. The heating means 4 is, for example, a heater in the present embodiment, and is disposed in an air flow path between the outlet of the indoor heat exchanger 3 and the inlet of the indoor fan 5 as shown in FIG. When the temperature of the air heat exchanged by the indoor heat exchanger 3 is too low, the heater 4 provided in the air flow path on the downstream side of the indoor heat exchanger 3 heats the air. The outside air introducing means 6 opens and closes the damper 67 at predetermined time intervals, adjusts the opening degree of the damper 67 by changing the opening degree of the damper 67 stepwise or continuously, or changes the rotation speed of the fan 31. By changing the fan speed, the amount of outside air introduced can be variably adjusted and controlled.

Reference numeral 7 denotes a refrigerant pipe, and 8 denotes an outdoor unit.
To the indoor heat exchanger 3. Here, for example, the refrigerant pipe 7, the outdoor unit 8, and the indoor heat exchanger 3 are constituted by a vapor compression refrigeration cycle.

As shown in FIG. 2, the outdoor unit 8 includes:
Compressor 22, four-way valve 23 as flow switching means, outdoor heat exchanger 25, outdoor fan 41, expansion valve 26 as pressure reducing means
The outdoor unit 8 and the indoor heat exchanger 3 are connected by a refrigerant pipe 7. As the refrigerant, for example, HCF
R22 as C refrigerant is circulated in the refrigerant pipe. Less than,
The operation of the refrigerant circulation when the indoor heat exchanger 3 performs indoor cooling in this vapor compression refrigeration cycle will be described. When cooling the room, the outdoor heat exchanger 25 is operated as a condenser and the indoor heat exchanger 3 is operated as an evaporator, and the four-way valve 2 is operated.
3 is connected as shown by the solid line. The high-pressure gas refrigerant compressed by the compressor 22 flows from the discharge port of the compressor 71 to the outdoor heat exchanger 25 via the four-way valve 23, where the outdoor fan 41
Dissipates heat to the outside air blown by. The refrigerant condenses and flows out of the outdoor heat exchanger 25 as a high-pressure liquid refrigerant. Thereafter, the refrigerant flows to the expansion valve 26 and is adiabatically expanded to become a low-pressure two-phase refrigerant. Furthermore, the low-pressure two-phase refrigerant circulates through the refrigerant pipe 7 and flows to the indoor heat exchanger 3, where the indoor air is cooled by exchanging heat with indoor air when collecting heat and evaporating. Then, the refrigerant flows out of the indoor heat exchanger 3 as a low-pressure gas refrigerant, and then passes through the refrigerant pipe 7 to the outdoor unit 8.
And returns to the suction port of the compressor 22 via the four-way valve 23. By such an operation, cold heat is obtained in the indoor heat exchanger 3. The amount of change in the temperature and humidity of the indoor air is determined by the evaporation temperature of the refrigerant in the indoor heat exchanger 3 and the temperature and humidity of the indoor air. The evaporation temperature has a feasible temperature tolerance. Generally, in a refrigeration cycle for performing air conditioning, the lower limit of the evaporation temperature is set to about 10 ° C. due to heat resistance of each device and measures against dew.

The operation of refrigerant flow during operation when the indoor heat exchanger 3 heats the room will be described. When heating the room, the outdoor heat exchanger 25 is operated as an evaporator, the indoor heat exchanger 3 is operated as a condenser, and the four-way valve 2 is operated.
Numeral 3 switches the refrigerant circuit in the cooling operation and connects it as shown by the dotted line. The high-pressure gas refrigerant compressed by the compressor 22 flows from the discharge port of the compressor 22 to the indoor heat exchanger 3 of the indoor unit 1 through the refrigerant pipe 7 through the four-way valve 23, where heat is released and condensed. In doing so, the room is heated by exchanging heat with room air. Then, the refrigerant flows out from the indoor heat exchanger 3 as a high-pressure liquid refrigerant and flows out of the expansion valve 26 of the outdoor unit 8.
Adiabatic expansion in the outdoor heat exchanger 25
Flows into Further, the refrigerant collects heat from the outside air blown by the outdoor fan 41 in the outdoor heat exchanger 25, evaporates, flows out as low-pressure gas refrigerant, and returns to the suction port of the compressor 22 through the four-way valve 23. By such an operation, heat is obtained in the indoor heat exchanger 3.

The air conditioner shown in FIG. 1 is provided with means for detecting the air condition of the outside air and the room air. Reference numeral 9 denotes indoor air temperature detecting means as suction temperature detecting means, and reference numeral 10 denotes indoor air humidity detecting means as suction humidity detecting means, each of which is provided, for example, at an indoor air intake of the indoor unit 1. The temperature of the return air, which is the indoor air taken into the indoor unit 1 from the indoor unit 1, is detected by the indoor air temperature detecting means 9, and the indoor unit 1
The indoor air humidity detecting means 10 detects the humidity of the return air, which is the indoor air taken into the apparatus. Reference numeral 11 denotes an outside air temperature detecting means, and 12 denotes an outside air humidity detecting means, each of which is provided, for example, outside the room, around an intake port to the outside air introducing means 6, and is a temperature of outside air taken into the indoor unit 1 by the outside air temperature detecting means 11. And the humidity of the outside air taken into the indoor unit 1 is detected by the outside air humidity detecting means 12. 13 is a blow-off air temperature detecting means for detecting the temperature of the air blown out from the air conditioner and circulating in the room, and 14 is a blow-off air humidity detecting means for detecting the humidity of the air circulating in the room similarly. The outlet air temperature detection means 13 detects the temperature of the air blown from the indoor unit 1 to the room 2 by the outlet air temperature detection means 13 and blows the air from the indoor unit 1 to the room 2 by the discharge air humidity detection means 14. Detect the humidity of the air to be discharged. Further, the indoor heat exchanger temperature, that is, the evaporation temperature of the refrigerant, is measured by the indoor heat exchanger pipe temperature detecting means 18 provided in the refrigerant pipe of the indoor heat exchanger 3. Reference numeral 32 denotes an electronic box, which is an indoor control device provided in the indoor unit 1 and stores, for example, one or a plurality of microprocessors, and detects indoor air-conditioning load detection means, operation operation setting means, outside air amount control means, and operation operation. The operation of the control means is performed. This operation will be described later in detail.

FIG. 4 is a diagram for explaining the relationship between the flow of refrigerant and the flow of air in the system system according to one embodiment of the present invention.
Is an indoor unit of an air-conditioning air conditioner mounted on the wall surface 21 of the room 2 and includes an indoor heat exchanger 3, a heater 4 as a heating means, and an indoor fan 5. Reference numeral 32 denotes an indoor control device that performs operation start and stop, temperature adjustment, change of set values, information transmission with the outdoor control device 33, and the like in accordance with commands from a remote control device (not shown). 34
Is an outlet grill, 35 is a suction grill, and 39 is an indoor filter. Reference numeral 6 denotes an outside air introduction means for taking in outside air from an opening penetrated through the wall surface 21 and is constituted by a ventilation fan 31, an outdoor filter 40, and a shutter 15. 8
Is an outdoor unit connected to the indoor heat exchanger 3 by the refrigerant pipe 7, and includes a compressor 22, a four-way valve 23, an outdoor heat exchanger 25, an expansion valve 26, an accumulator 24, and an outdoor fan 41 that constitute a refrigeration cycle. Built-in. A control device 33 adjusts the physical state of the refrigerant 16 flowing through the refrigerant pipe 7 by combining the rotation speed of the compressor 2, switching of the four-way valve 23, rotation speed of the outdoor fan 41, adjustment of the opening of the expansion valve 26, and the like. It is. 9 is an inlet temperature detecting means, 10 is an inlet humidity detecting means, 11 is an outside air temperature detecting means, 12 is an outside air humidity detecting means, 13 is an outlet temperature detecting means, 14
Denotes outlet humidity detecting means.

In this configuration, a fresh outside air amount x * Vo, which is outside air, is taken in from the outdoor to the intake side of the indoor unit 1 by the ventilation fan 31 of the outside air introduction means 6 which is a ventilation fan.
The indoor return air volume of the return air, which is air returned by the indoor fan 5 of the indoor unit 1 and circulated in the indoor unit 1 and is sucked into the suction grill 35 by circulating the outside air amount x * Vo.
VR is the amount of air taken into the indoor unit 1. The drawn air is cooled by the indoor heat exchanger 3. That is, the refrigerant compressed by the compressor 22 of the refrigeration cycle is condensed in the outdoor heat exchanger 25 and cooled by external air, the pressure is reduced by the expansion valve 26, the refrigerant is evaporated by the indoor heat exchanger 3, and the heat exchanger Cool the tubes. This refrigerant circulates through a refrigeration cycle that is returned to the compressor again. The indoor heat exchanger, which is an evaporator, can cool the room by cooling the outside air amount x * Vo passing therethrough and the room return air flow amount VR. The room can be heated by switching the four-way valve 23 provided in the refrigeration cycle.
The heating means 4 is operated when necessary, such as at the time of heating, and shows a heater by electric input. However, the air may be heated by another method, for example, by reheating the refrigerant. Outdoor filter 4
Numeral 0 is a filter for treating outside air, which can remove not only dust and the like but also harmful gases such as pollen and NOX. Thereby, fresh and clean outside air can be taken in. The indoor filter 39 removes dirt from the air returning from the room, and can remove dirt generated in the room such as dust, virus, and smell of cigarettes.

The symbols T and X, such as To and Xo, shown in the figures indicate temperature and humidity as shown in the figures.
However, humidity is represented by absolute humidity. Qe is the cooling capacity of the indoor heat exchanger including cooling and dehumidification, and ET is the evaporation temperature which is the temperature of the tube of the indoor heat exchanger which is the evaporator. The temperature measurement shows a structure in which the temperature sensor is directly measured, but especially for the indoor temperature and the blowout temperature, one of them is directly measured and the other is obtained by calculating from the cooling capacity and air flow, that is, the number of revolutions, etc. But it is natural that it is good. Humidity is measured with a humidity sensor, but in this case, relative humidity is usually measured. Therefore, it is necessary to convert the measured value of the relative humidity and the temperature into the absolute humidity by a microcomputer provided in the control device. Also, the temperature of the room and the outlet,
It is explained that the humidity is measured by a sensor installed inside the indoor unit, but it is good if the position can also play a role outside the indoor unit, especially for the blowout temperature by taking data from another thermometer arranged indoors Is also good.

The target temperature T * is set as a zone. However, the target temperature zone width is about ± 1-3 ° C. as a zone in which a plurality of regions of about ± 0.3-0.5 ° C. determined by the resolution capability of the microcomputer used are continuously provided.
That is, in general, a person feels that when the outside air temperature is low, the room temperature is lower even at the same temperature, so that the target temperature band width can be switched. Alternatively, the target value is set to a wide zone. This is because women feel lower than men at the same temperature, and older women feel lower at the same temperature. Since the sense of this temperature difference may be about 3 ° C. in some cases, the operation of the compressor or the fan is switched to an operation for maintaining a temperature that does not require much energy by entering the target temperature zone, for example. As a result, it is possible to perform efficient driving while giving a comfortable feeling to various people. Driving that gives a comfortable feeling to the air conditioning in homes, especially for women and the elderly, by switching the operation of the compressor, etc., to an operation that maintains the temperature after always reaching a high temperature in the target temperature zone Can be performed. Switching such a temperature band width, or switching the operation of the refrigeration cycle or the indoor fan when the temperature band width is reached, may be performed by a setting using a remote controller, or controlling one or both of indoor and outdoor. It is stored in a microcomputer provided in the device and switched according to the operation pattern and operation mode.

The target humidity X * is similarly set as a zone. However, the zone width of the target humidity is a zone in which a plurality of areas divided in a range determined by the accuracy of a sensor or the like to be used are continuous. In this example, the relative humidity is set as 50-65%. That is, depending on the season, for example, in the rainy season when the humidity of the outside air is extremely high, etc., the user feels comfortable without extremely increasing the difference from the outside. I can do it. As will be described in detail later, if the relative humidity reaches 65%, the cooling operation is not stopped even if the relative humidity reaches 65% in order to integrally control the operation of setting the temperature and humidity to the target values in relation to the cooling operation. Humidity decreases. Further, the width of the humidity target band may be switched for use. For example, you can set a lower setting when drying laundry indoors or when taking measures against dew point in winter,
Alternatively, the width may be reduced. Switching the humidity target zone width or switching the operation of the refrigeration cycle or the indoor fan when the humidity target zone width is reached is provided in other settings such as a remote controller and in the indoor or outdoor control device or both. It can be easily implemented with the operation pattern stored in the microcomputer.

Although there is a humidity sensor which outputs an absolute humidity signal as a humidity sensor, the relative humidity is generally measured. In the organic polymer type humidity sensor, when the moisture in the atmosphere increases, the ionization action becomes easy, and the mobile ion concentration increases. Therefore, by applying a voltage, the movement of the movable ions is detected as a change in impedance, and humidity is detected. The ceramic type humidity sensor captures the change in the surface state due to the chemical adsorption of water molecules on the surface. When the thermistor element is used as a humidity sensor, the thermal conductivity of the humid air changes according to the amount of water vapor in the air, which changes the degree to which the thermistor in a heated state is cooled. Is measured.

FIG. 5 is an explanatory diagram showing the flow of air near the indoor heat exchanger 3 in the air conditioner according to the present embodiment. Here, T is temperature [° C.] and X is absolute humidity [kg].
/ Kg '] and V represent the air volume [m ³ / h]. Outside air OA (temperature TOA, humidity XOA, air volume VOA) is introduced into the suction side of the indoor unit 1, and return air RA (temperature TR, humidity XRA, air volume VRA) of the suction air, which is room air.
And flows into the indoor heat exchanger 3 as mixed air KA (temperature TKA, humidity XKA, air volume VRA + VOA). Hot or cold heat is transported to the indoor heat exchanger 3 by the refrigerant passing through the refrigerant pipe 7 as a heat transport means, and heat is exchanged when air flows around the refrigerant pipe in the indoor heat exchanger 3. The mixed suction air KA that has been heat-exchanged with the refrigerant having the evaporation temperature ET [° C.] in the indoor heat exchanger 3 changes at least one of its temperature and humidity, and in some cases, is heated by the heater 4 or as it is. At this temperature, the air flows out of the indoor unit 1 as indoor air SA (temperature TSA, humidity XSA, air volume VRA + VOA). This blowing air S
A is sensible heat SH [kca of indoor load while circulating in the room 2.
1 / h], that is, the one that changes the temperature and the latent heat LH [k
cal / h], that is, the one that changes the absolute humidity, receives the load and returns to the return air RA again.
A and flows into the indoor heat exchanger 3.

That is, FIG. 5 shows a structure in which ventilation for introducing outside air to the intake side of an indoor unit is introduced into the inside of an air conditioner. The temperature and humidity are integrally controlled in an air conditioner having a structure in which an indoor unit of the air conditioner and a ventilation fan are integrated. FIG. 4 is a diagram for explaining the content of control for approaching a target value. First, as a target zone for the temperature and humidity sucked into the suction port, which is the indoor temperature and humidity, a temperature of 26 ° C. ± 1 ° C. and a humidity of 50-65% age,
Assuming the rainy season, the upper limits are temperature 26 ° C and humidity 65%
Set to. This setting may be performed by storing a seasonal calendar in advance and switching with a timer in the control device, or by setting with a remote controller. For example, the microcomputer determines the existing classification based on the calendar function stored in the control device and the detected outside air temperature. The constant temperature and humidity control aiming at one point will be described. The heater 4 does not operate as long as it is not overcooled, and the humidity is expressed as absolute humidity by converting relative humidity. Return air RA temperature TRA and humidity XRA from room to air conditioner, outside air OA temperature TOA
And the humidity XOA, and the temperature TSA and the humidity XSA of the supply air SA from the air conditioner to the room are obtained by the means for detecting each temperature and humidity. Until now, the detection of each temperature and humidity has been explained by each sensor, but indirectly from other quantities, for example, for some temperatures, it is indirectly obtained by calculation from the data of the refrigeration cycle etc. Alternatively, if the data is fixed, for example, in a region where the seasonal weather is relatively constant, use a microcomputer with a built-in seasonal calendar. From
For example, if the measured humidity rises during the dry high temperature period, it is assumed that it is raining and the temperature is reduced by 3 ゜ C from the average temperature stored in the microcomputer as the detection value. The method of calculation calculated in step (1) may be used as the detection means.

As shown in FIG. 5, the temperature TRA and the humidity XRA of the return air RA from the room to the air conditioner, the temperature TOA and the humidity XOA of the outside air OA, the temperature TKA and the humidity XKA of the mixed air KA, and the air conditioner to the room. 8 data of each temperature and humidity of supply air SA temperature TSA and humidity XSA are required, but temperature and humidity of outside air, suction, that is, temperature and humidity of return air, and blowout, that is, supply air to the room. The temperature TKA and the relative humidity ΦKA of the mixed air can be determined by measuring the temperature and humidity of the indoor air with six sensors like the detecting means for detecting the temperature and humidity of the indoor air.
And the outside air volume VOA. On the contrary, there is a method of measuring the temperature TKA and the humidity XKA of the mixed air, and obtaining the temperature TOA and the humidity XOA of the external air OA from the return air volume VRA and the external air volume VOA, but the former is preferable to the latter. In the former case, that is, when the outside air is measured, the directly detected data can be used when judging the introduction of the outside air. In the latter, once the outside air is introduced and operated, the temperature and humidity of the outside air are determined. In addition, there is a case where the temperature of the outside air is measured, for example, in an outdoor unit, and the detection value obtained by the outside air temperature sensor is used. The supply air temperature TSA can be regarded as substantially the same as the indoor heat exchanger temperature ET. Therefore, if the indoor heat exchanger temperature is being measured, the supply air temperature measurement can be substituted for it, and vice versa. Further, the supply air humidity XSA may be assumed to be 100%. In the case of Japan, making this assumption saves on measurements, as lowering this leads to better directions. If the target value of the humidity XRA of the intake air, that is, the return air is set to 40 to 65%, the measurement may be omitted by using this numerical value at home. However, outside air humidity XOA
Is necessary in the present invention. Therefore, by storing numbers in a microcomputer or the like, the minimum required measurement sensor requires four data: return air temperature TRA, outside air temperature TOA, indoor heat exchanger temperature E or supply air temperature TSA, and outside air humidity sensor ΦOA. I do.

Here, the air that flows out after exchanging heat in the indoor heat exchanger 3 is referred to as outlet air, and the blown air is the air that is blown from the indoor unit 1 into the room 2. When heating with this, the temperature of the outlet air is different from the temperature of the blown air. In addition, the room is not usually closed, and extra room air naturally flows out of the room through a gap in the room, an exhaust port, or the like. In that case, since the interior 2 is pressurized, it is possible to prevent odor, dust, and the like from flowing from another adjacent room. Further, the room 2 may be configured to introduce outside air and mechanically exhaust indoor air with a ventilation fan or the like. In that case, the balance of the indoor pressure can be maintained, and the introduction of outside air can be performed smoothly and reliably.

FIG. 6 is a diagram for explaining the control device. As shown in the block diagram of FIG. 6, the microprocessor of the electronic box 15 includes an indoor air-conditioning load detecting means 81, an operation setting means 82, and an outside air amount controlling means. 83 and the operation control means 84 are stored as software programs. The indoor air-conditioning load detecting means 81 detects the indoor air-conditioning load QL. For example, the enthalpy iRA of the return air is obtained from the temperature TRA of the return air and the humidity XRA of the return air, and similarly the temperature TSA of the blown air and the humidity of the blown air. The enthalpy of the blown air iSA is obtained from XSA, and the following equation 1 is obtained.
, The indoor air-conditioning load QL (SH, LH), QL =
SH + LH is detected. For example, at the time of cooling, the indoor air-conditioning load QL is obtained by calculation using Equation 1. QL = (VRA + VOA) · ρ · (iRA−iSA) (1) VRA: Return air volume VOA: Outside air volume ρ: Density iRA: Enthalpy of return air iSA: Enthalpy of blown air

The operation setting means 82 includes the outside air temperature and the outside air humidity (TOA, XOA) as the outside air state detected by the outside air temperature detecting means 11 and the outside air humidity detecting means 12, the indoor air temperature detecting means 9 and the indoor air humidity detecting means 10 The return air temperature and the return air humidity (TRA, XRA) are detected as the indoor air conditions detected by the target indoor air temperature and the target indoor air humidity (Tt, X) are set as the target indoor air conditions set by the indoor remote control switch and the like.
t), the indoor air-conditioning load QL detected by the indoor air-conditioning load detecting means 81 and the like are input, the outside air introduction amount VOA, the air-conditioning capacity Qe, the evaporation temperature ET, the heating amount W of the heater 4 as the heating means, if necessary, Information such as the total air volume VRA + VOA of the air passing through the heat exchanger 3 is set. The outside air introduction amount VOA is
For example, it is set in consideration of the mixing ratio x: y (x + y = 1) of the return air flow rate VRA and the outside air flow rate VOA. The setting method at this time will be described later in detail based on a flowchart. In addition, the evaporation temperature ET of the refrigerant flowing through the indoor heat exchanger 3 and the air conditioning capacity Qe are set from control vectors on the psychrometric chart showing changes in temperature and humidity between the intake air and the blown air.

The outside air amount control means 83 controls the operation of the outside air introduction means 6 so that the outside air introduction amount VOA set by the operation setting means 82 is obtained. Specifically, for example, the outside air introduction amount can be varied by controlling the opening and closing of the damper 67 as an outside air introduction opening / closing mechanism, controlling the opening degree, or controlling the rotation speed of the fan 31 provided in the outside air introduction means 6. The outside air introduction amount is set, for example, as a ratio x: y between the return air RA and the outside air OA supply amount, and the outside air introduction amount VOA in the outside air introduction means 6 and the total airflow VRA + VOA from the indoor unit 1 are set to this ratio. And control. At this time, when the outside air is sucked into the indoor unit 1 at 100% of the total air volume, that is, when only the outside air is sucked into the indoor unit 1, for example, the fan 31 of the outside air introduction means is operated at the maximum high-speed operation, and the indoor fan 5 is operated at the ultra-low speed at a low speed. The outside air can be taken into the room at a rate of 100%. When the amount of outside air taken in is 100% or less, by adjusting the amount of outside air introduced and the total amount of air blown from the indoor unit, excess room air naturally flows out of the room through the gap between the rooms, and the ratio of outside air to the total amount of air Can be controlled. The total amount of air blown from the indoor unit 1 can be controlled by changing the rotation speed of the indoor fan 5.

The operation control means 84 controls the operation of the refrigeration cycle as the heat transport means so that the air conditioning capacity Qe and the evaporation temperature ET set by the operation setting means 82 are attained. To obtain the desired refrigerant temperature ET and the air conditioning capacity Qe. The operation of the refrigeration cycle is, specifically, the rotation speed control of the indoor fan 5 on the indoor side, and the opening degree control of the expansion valve 75, the frequency control of the compressor 71, the rotation speed control of the outdoor fan 74, etc. on the outdoor side. is there. Further, when the set operation includes heating by the heater 4, on / off control of the heater 4 is performed. Equation 2 shown below is an example of a method for controlling the operation of the refrigeration cycle, as a target air conditioning capacity change amount ΔQe * and a target evaporation temperature change amount ΔE of the refrigerant.
This is an equation for calculating the compressor frequency change amount Δfz and the rotational speed change amount ΔNi of the indoor fan 5 from T *. The coefficients a, b, c, and d in this equation may be obtained in advance by simulation in consideration of experimental data and theoretical values and stored as data. This control is generally performed by VPM (vec
tortern matching) control, the frequency fz of the compressor 71, the number of rotations N of the indoor fan 5
i, the air conditioning capacity Qe, and the increase or decrease of the evaporation temperature ET are shown. For example, if the frequency is increased (Δfz>
0), the air conditioning capacity increases (ΔQe *> 0), and the evaporation temperature decreases (ΔET * <0). Further, for example, when the rotation speed of the indoor fan is increased during the cooling operation (ΔNi> 0), the air conditioning capacity is increased (ΔQe *> 0), and the evaporation temperature is increased (ΔET).
*> 0).

[0046]

(Equation 1)

When the above description is qualitatively expressed, it is expressed by the following equation 3, where A> 0, B> 0, C> 0, and D> 0. The quantitative values of A, B, C, and D are obtained by experiments and simulations, and after the values are obtained, the values of coefficients a, b, c, and d are obtained by transforming Expression 3 as shown in Expression 2. Can be

[0048]

(Equation 2)

The indoor air-conditioning load detecting means 81, the driving operation setting means 82, the outside air amount control means 83, and the driving operation control means 84 may all be incorporated in one microprocessor as a computer program. May be built in different microprocessors.

The feature of the present invention is that the temperature and humidity of the outside air and the indoor air are detected, and the temperature and humidity drawn on the humid air chart are grasped as a vector state, and the indoor air temperature and humidity are set as target temperatures. An object of the present invention is to control an air conditioner such as a refrigeration cycle or an indoor fan, a heater, a circulating blower, and a ventilator so as to approach the temperature and humidity. For example, when outside air can be used for indoor air conditioning, the outside air is introduced into the room by the outside air introduction means 6 positively.

FIG. 7 is an explanatory diagram showing an example of a change in the air condition of the indoor air when the air conditioner cools and dehumidifies the indoor air on the psychrometric chart. FIG. 7 shows a general psychrometric chart as described above, wherein the vertical axis represents absolute humidity X [kg / kg '], and the horizontal axis represents dry bulb temperature T [° C.].
Is shown. The air state is represented by one point on the humid air chart based on the temperature and the humidity. Here, this air state is referred to as the temperature and humidity of the air. The outside air enthalpy is calculated from the outside air temperature and the outside air humidity detected by the outside air temperature detection unit 11 and the outside air humidity detection unit 12, and the return air is calculated from the return air temperature and the return air humidity detected by the room temperature detection unit 9 and the indoor humidity detection unit 10. Calculate the enthalpy. Then, the outside air enthalpy is compared with the return air enthalpy. If the outside air enthalpy is smaller than the return air enthalpy, the outside air (outside temperature humidity OA) is introduced from the outside air introduction means 6. In the present embodiment, whether or not to introduce outside air is determined by enthalpy and the user's ventilation requirements. This will be described with reference to FIG.

The intake air temperature / humidity KA, which is a mixed air in which the return air (return air temperature / humidity RA) introduced from the room 2 to the indoor unit 1 and the outside air (outside air temperature / humidity OA), is equal to the return air temperature / humidity RA. The temperature and humidity are on a straight line connecting the outside temperature and humidity OA, and the temperature and humidity change according to the amount of outside air introduced. Return air supply amount: Outside air supply amount = x: y The mixed air that has been introduced and has the suction air temperature and humidity KA so that x: y is exchanged with the refrigerant in the indoor heat exchanger 3. It is cooled and dehumidified. When the evaporation temperature of the indoor heat exchanger 3 (the temperature of the refrigerant pipe measured by the indoor heat exchanger pipe temperature detecting means 68, that is, the pipe temperature) is ET, the temperature is on a straight line connecting the suction air temperature humidity KA and the evaporation temperature ET. Air temperature and humidity, which is air of temperature and humidity, flows out as air on the outlet side of the indoor heat exchanger 3. In the present embodiment, the heater 4 is provided in the air flow path on the air outlet side of the indoor heat exchanger 3,
If the air is excessively cooled to perform dehumidification in the indoor heat exchanger 3, the air can be heated by the heater 4. The air that has passed through the heater 4 is blown air (blow air temperature and humidity S).
A), and the air is blown into the room from the indoor unit 1. Thereafter, the indoor air-conditioning load QL (SH, LH) is applied to the air blown out from the indoor unit 1 and is taken in the indoor unit 1 again as return air (return air temperature / humidity RA). The return air temperature / humidity RA should be slightly different from the initial return air temperature / humidity and approach the target room air temperature / humidity t.

Here, in the initial operation, when the operation is performed at the evaporation temperature ET of the refrigerant with only the return air as the intake air without introducing outside air, the blow-off air enthalpy calculated from the blow-off air temperature and the blow-off air humidity, The indoor air conditioning load QL is estimated from the enthalpy of the return air calculated from the air temperature and the return air humidity, that is, the return air enthalpy on the suction side. The change in the indoor load in the horizontal direction is the sensible heat load SH, and the change in the vertical direction is the latent heat load LH.

Finally, in order to set the return air temperature / humidity RA to the target indoor air temperature / humidity t in FIG. 7, the target outlet air temperature / humidity SA * is calculated from the target indoor air temperature / humidity t and the indoor air conditioning load QL. You. Then, the suction air temperature and humidity KA and the target evaporation temperature ET are set so as to realize the target outlet temperature and humidity SA * while minimizing the air-conditioning capacity Qe.
Determine *. By determining the suction air temperature / humidity KA, the mixing ratio of the return air temperature / humidity RA and the outside air temperature / humidity OA taken into the indoor unit 1 from the room 2 is determined,
The outside air introduction amount is determined. In the control of the outside air introduction amount, the outside air introduction unit 6 controls the outside air introduction amount. For example, in order to achieve the target outlet temperature and humidity SA * at the evaporation temperature ET *,
When the outside air temperature and humidity OA and the return air temperature and humidity RA are mixed to obtain the suction air temperature and humidity KA, the outside air is introduced with respect to the total amount of air sucked into the indoor heat exchanger 3 (corresponding to the total air volume blown into the room from the indoor unit). The proportions of the quantities are obtained as | KA-RA | / | OA-RA | = y / (x + y) = VOA / (VOA + VRA). The operation of the refrigeration cycle is controlled according to the evaporation temperature ET * and the air conditioning capacity Qe at this time. Here, since the air conditioning capacity Qe is made as small as possible, the input to the air conditioner can be minimized, and energy is saved.

Considering the state of the air before and after the indoor heat exchanger 3, while the suction air having the suction air temperature and humidity KA flows into the indoor heat exchanger 3 and flows inside the indoor heat exchanger 3 outside the refrigerant pipe. Then, the refrigerant exchanges heat with the refrigerant having the evaporation temperature ET * flowing through the refrigerant pipe, and flows out of the indoor heat exchanger 3 as the outlet-side air temperature and humidity SA. In the psychrometric chart, the air with the temperature and humidity SA at a point on a straight line connecting the point of temperature and humidity KA and the point of the temperature ET * on the saturation line flows out as the air on the exit side of the indoor heat exchanger 3. Conversely, if it is desired that the suction air with the temperature and humidity KA flow into the indoor heat exchanger 3 and the outlet air with the temperature and humidity SA be discharged, the temperature and humidity KA is changed from the temperature and humidity KA on the psychrometric chart. The air-conditioning capacity Qe, which is the length of the control vector, and the refrigerant having the temperature at the intersection of the straight line extending from the control vector and the saturation line may be circulated through the indoor heat exchanger 3 so as to change. In the present invention, in order to make it easier to control the operation of the indoor heat exchanger 3, a target indoor air temperature / humidity t and a target outlet air temperature / humidity SA * which is a target of the air to be blown out from the indoor air-conditioning load QL are set. Control is performed so that the temperature and humidity of air blown from the exchanger 3 approach the target air temperature and humidity SA *.

However, there is a limit to the gradient of the control vector that can be realized, and SHFmin ≦ SHF ≦ SHFmax (maximum 1) must be within the allowable range of the sensible heat ratio (SHF) of the refrigeration cycle. Here, the sensible heat ratio (SHF) is represented by Equation 4, and is expressed by gas H ₂ O in the total heat quantity Q [kcal / h] (sensible heat + latent heat) used to lower the temperature of air. Of heat Q used to condense water into liquid H ₂ O
It is the ratio of LH [kcal / h] (latent heat) subtracted. SHF = (Q−QLH) / Q = sensible heat / (sensible heat + latent heat) (4) Therefore, the operation at SHFmax is a high sensible heat operation, SHFm
The operation in is the maximum dehumidification operation. For example, if the dehumidification amount is 0, SHF = 1 (high sensible heat operation), and if only dehumidification is possible without lowering the room temperature, SHF = 0 (maximum dehumidification operation).
It is. Actually, there is a limit to the dehumidifying capacity. In terms of the psychrometric chart, when the extension line of the control vector does not intersect with the saturation line, the limit of the dehumidifying capacity is exceeded, and this is a state that cannot be realized. That is, when a straight line connecting the intake air temperature and humidity KA to the indoor heat exchanger 3 and the outlet side air temperature and humidity SA is extended on the psychrometric chart, this straight line does not intersect with the saturation line. At this time, even if heat is exchanged with the refrigerant, air with the temperature and humidity SA cannot be obtained at the outlet side of the indoor heat exchanger 3.
As described above, in general, in a refrigeration cycle for air conditioning, the lower limit of SHF is limited by setting the lower limit of the evaporation temperature to about 10 ° C from the heat resistance of each device and measures against dew. There is also.

As described above, the flow of air is the return air R
The air volume VRA of A and the air volume VOA of the outside air OA are mixed, and the temperature / humidity K of the mixed air having a mixing ratio x: y (x + y = 1) is obtained.
A, the temperature / humidity KA of the mixed air is cooled and dehumidified by the indoor heat exchanger, which is an evaporator, to become the temperature / humidity SA of the supply air. The temperature and the humidity can be measured by the outlet temperature detecting means and the outlet humidity detecting means provided near the outlet grill 34 of the air conditioner outlet. FIG. 7 is a diagram for explaining the state of this phenomenon on the psychrometric chart.
In FIG. 7, the state of the return air temperature / humidity RA, the outside air temperature / humidity OA, and the supply air temperature / humidity SA can be plotted on a graph with the horizontal axis representing temperature and the vertical axis representing absolute humidity. As the axis of enthalpy i is described in the psychrometric chart of FIG. 3, the temperature and the absolute humidity have the following relationship with the enthalpy i
The oblique axis is uniquely determined. That is, i = 0.
24 * temperature + (597.5 + 0.441 * temperature) * absolute humidity. Therefore, if the temperature and the humidity are detected, the microcomputer can calculate the enthalpy and the magnitude of the load which is energy. Conversely, if the load is mainly a computer and lighting, such as in a computer room, the enthalpy can be calculated from the power consumption of the load using the data stored in the microcomputer and used as the temperature. As described above, in this example, the enthalpy of the room air is larger than the enthalpy of the outside air, and the outside air is introduced from the outside air introduction means 6.

Although the enthalpy is not shown in FIG. 7, between the return air temperature and humidity RA and the supply air temperature and humidity SA, the sensible heat SH of the indoor load, that is, the one that changes the temperature, and the latent heat LH, that is, the absolute heat LH, that is, By changing the humidity, in other words, as shown in the figure, by the component of enthalpy which is energy, it can be obtained by calculation. In FIG. 7, the data of the psychrometric chart is a correlated physical quantity, and since the data is stored as a chart or an equation, these calculations are easily performed by a control device using a microcomputer. From this state, the room temperature and humidity are adjusted to the target temperature and humidity t by adjusting the ventilation means and the refrigeration cycle.
Must be. Assuming that the point of the target temperature / humidity is t, the temperature / humidity RA of the return air must be set to the target value of the temperature / humidity t. Therefore, the shape formed by the dashed line formed by the sensible heat and the latent heat as shown in FIG. By moving in parallel with the target, the target supply temperature / humidity SA * can be obtained.

In the air conditioner of the present invention, a basic concept of a driving method for actively introducing and effectively using outside air to obtain a comfortable indoor space will be described. The suction air temperature / humidity KA, which is a mixture of the return air temperature / humidity RA and the outside air temperature / humidity OA, is selected so that the enthalpy difference between the suction air temperature / humidity KA and the target air temperature / humidity SA * becomes small. The gradient of the control vector from the intake air temperature / humidity KA to the target outlet air temperature / humidity SA * is within the allowable range of the refrigeration cycle sensible heat ratio (SHF).
The above 1. Choose one with a small enthalpy difference. When the control vector cannot be realized due to insufficient dehumidification even in the maximum dehumidifying operation SHFmin of the refrigeration cycle, the temperature of the target blow-off air is lowered to operate so as to satisfy the humidity, and the outlet side air flowing out of the indoor heat exchanger 3 is heated. To control the air to be at the target air temperature and humidity SA *. That is, the refrigerant temperature of the indoor heat exchanger 3 is set so as to be the humidity of the target blown air, and the outlet side air that has exchanged heat with the refrigerant at that temperature in the indoor heat exchanger 3 is lower in temperature than the target blown air. In some cases, it is heated to the temperature of the target blowing air.

One of the above ideas is as follows. And the enthalpy difference is set to be as small as possible, so that the total sum of the inputs to the compressor 71, the outdoor fan 74, the indoor fan 5 and the like of the air conditioner can be minimized, and energy can be saved without performing unnecessary operation. Become. Furthermore, 3. In the case where the heating means is used, when the air exchanged in the indoor heat exchanger is heated by the heating means, the total energy of the heat transport capacity and the heating amount for obtaining the refrigerant temperature in the indoor heat exchanger 3 is The amount of outside air introduced is set to be small, and operation control is performed to save energy. That is, the operation control is performed so that the total amount of the air conditioning capacity Qe and the input energy to the heater 4 is reduced.

For this reason, the operation setting operation performed by the operation setting means 82 is to determine whether the outside air can be used for air conditioning in the room and to set the operation based on the determination. Accordingly, each device of the air conditioner is actually operated by the operation control operation performed by the outside air introduction amount control means 83 and the operation operation control means 84. On the wet psychrometric chart, the area is divided into three areas according to the outside air state, the processing is performed on each area, and the outside air introduction amount, the air conditioning capacity, and the heating amount are set. FIG. 8 is an explanatory diagram showing the area of each zone in the psychrometric chart, and FIG. 9 is a flowchart showing a processing procedure of a zone division portion of the outside air utilization method according to the outside air state.
As shown in FIG. 8, the return air temperature / humidity RA, the target outlet air temperature / humidity SA *, and the outside air temperature / humidity OAx (x = 1 to
The air chart is divided into three zones as to how the outside air is used depending on the state of 3). The zone is an area above the isenthalpy line (straight line A) passing through the return air temperature and humidity RA, and the outside air temperature and humidity OA1 is equal to the return air temperature and humidity R.
This is when the enthalpy is higher than A. The zone is a region where the outside air temperature and humidity OA2 is lower enthalpy than the return air temperature and humidity RA, and the outside air temperature is lower than the return air temperature.
This is a region at a lower temperature side than the line connecting * (straight line B). The zone is a region in which the outside air temperature and humidity OA3 is lower in enthalpy than the return air temperature and humidity RA and the outside air humidity is lower than the return air humidity, and is a region on the lower humidity side than a line (straight line B) connecting RA and SA *.

In the flowchart of FIG. 9, the return air temperature / humidity RA and the return air enthalpy are calculated from the return air temperature and humidity detected by the suction temperature detecting means 9 which is the room temperature and the suction humidity detecting means 10 which is the room humidity ( ST1, ST2: indoor air temperature / humidity detection step), the outside air temperature humidity OA and the outside air enthalpy are calculated from the outside air temperature and humidity detected by the outside air temperature detecting means 11 and the outside air humidity detecting means 12 (ST3, ST4: outside air temperature and humidity) Detection step). Next, a target indoor air temperature / humidity is calculated from the target temperature and the target humidity (ST5: target indoor air temperature / humidity setting step). Next, in ST6 (indoor air-conditioning load detection step), a target outlet air temperature and humidity SA * is set from the return air temperature and humidity RA and the indoor air-conditioning load QL detected in advance.
The indoor air conditioning load can be easily obtained from the outlet temperature and humidity and the return temperature and humidity as described above. At ST7, the outside air enthalpy is compared with the return air enthalpy. If the outside air enthalpy is greater than the return air enthalpy, the zone is operated (ST7).
9). As a result of comparing the outside air enthalpy with the return air enthalpy in ST7, if the outside air enthalpy is smaller than or equal to the return air enthalpy, the return air temperature / humidity RA and the target outlet air temperature / humidity S
Draw a straight line B, which is a vector connecting A *, and
It is determined whether A is above or below this straight line B (ST
8). When the outside air temperature and humidity OA is in the region above the straight line B, that is, in a region lower than the return air temperature and humidity RA, the zone (ST10), and below the straight line B, that is, the return air temperature and humidity R
Zone A (ST1)
1).

In practice, for example, in order to know the positional relationship between two points on a plane, it is possible to calculate the cross product of the two points and determine the sign of the result. The cross product is two vectors, C (c1,
c2) and D (d1, d2) can be calculated by the formula of CxD = c1xd2-d1xc2. By utilizing this, it is possible to easily know which of the three zones the outside temperature / humidity OA is located in. Note that C and D are vectors and are quantities having a magnitude and a direction. When C * D> 0, C exists clockwise from D.

Next, the processing for setting the outside air introduction amount, air conditioning capacity and heating amount in each of the three regions will be described. FIG. 10 is a flowchart showing a processing procedure when the outside air temperature OA1 is a zone area, that is, when the outside air temperature OA1 is higher in enthalpy than the return air temperature humidity RA in FIG. In this case, the introduction of outside air increases the air-conditioning load. Therefore, when importance is placed on the energy saving effect, no outside air is introduced. For example, damper 67
Is closed and the fan 31 is stopped to close the outside air introducing means 6 and circulate only return air from the room. However, outside air may be introduced when ventilation is required due to a user request. Further, even if the setting is made such that the outside air is not introduced, the outside air introduction amount may not actually become 0 due to a gap in a wall or the like, and the outside air introduction means 6 may be operated so as to minimize the outside air introduction amount. .

In the processing flow, it is determined whether or not ventilation is required in ST21. If ventilation is required, the outside air introduction amount is reduced by a predetermined amount for ventilation, for example, the damper 17 of the outside air introduction means 6 is controlled. The fan 16 is fully opened or the fan 16 is rotated at a high speed (ST22). Then, as the suction air temperature and humidity KA of the indoor heat exchanger 3, the temperature and humidity of the mixed air in which the return air and the outside air are mixed are set (ST23). On the other hand, when ventilation is not required, the outside air introduction means 6 is closed to set the outside air introduction amount to 0 (ST24), and the suction air temperature and humidity KA of the indoor heat exchanger 3 sets the return air temperature and humidity RA ( ST25). In ST26, it is determined whether or not the control vector can be realized, that is, whether or not the SHF of the refrigeration cycle is within the allowable range. If the extension line of the control vector to the intake air temperature / humidity KA and the target outlet air temperature / humidity SA * intersects the saturation line and is within the allowable range of the evaporation temperature, ST27
Is performed. In ST27, a control vector for determining the air-conditioning capacity is set based on the suction air temperature / humidity KA and the target outlet air temperature / humidity SA * on the humid air chart. That is, a vector connecting the intake air temperature / humidity KA and the target outlet air temperature / humidity SA * is set, and the temperature at the intersection of the extension line of this vector and the saturation line is set as the refrigerant temperature of the indoor heat exchanger 3. S
If the extension line of the control vector does not intersect with the saturation line in the judgment of T26, it is out of the allowable range, and the SHFm
In the in operation, the outlet side air having the same level of humidity as the target humidity flows out of the indoor heat exchanger 3 and is heated to the target temperature by the heater 4 so that the air-conditioning capacity and the refrigerant temperature are obtained so as to obtain the target outlet air temperature and humidity SA *. And the heating amount of the heater are set. ST61
In the (operation control step), the outside air having the outside air amount set by the outside air amount control unit 83 is introduced into the indoor unit 1, and the refrigeration cycle is operated based on the control vector set by the operation operation control unit 84. Further, the heater 4 is operated as needed. Actually, each component of the air conditioner, such as the operating frequency of the compressor 71, the opening degree of the expansion valve 75, the rotation speed of the indoor fan 5 and the outdoor fan 24, the heater 4, and the outside air introducing means 6, is operated. You. ST21-
By repeating ST28 and ST61 in a cycle of a predetermined time, for example, about 1 minute, the indoor air condition gradually becomes the target indoor air temperature and humidity t, and the air conditioning of the indoor 2 is performed.

The zone is an area having a lower enthalpy than the return air temperature / humidity RA and a lower temperature side than a line B connecting the return air temperature / humidity RA and the target outlet air temperature / humidity SA *.
That is, control when the outside air temperature and humidity OA2 is in the zone above the straight line B in this zone will be described.
In other words, in the zone of this zone, the rate of change of the humidity difference with respect to the temperature difference between the outside air and the return air in the area where the outside air enthalpy is smaller than the return air enthalpy and the temperature of the outside air is lower than the temperature of the return air. ,
This is an area excluding the outside air temperature and humidity where the rate of change of the humidity difference with respect to the temperature difference between the target outlet air and the return air is larger. When the outside air is in the zone, the low-temperature characteristics of the outside air are used to introduce the outside air and mainly use it for lowering the temperature of the indoor air, and mainly use the refrigeration cycle to exchange heat with the refrigerant in the indoor heat exchanger 3. Control to reduce the humidity of the indoor air. If the temperature to be lowered by outside air is not enough, lower the temperature by a refrigeration cycle.

FIG. 11 is a flowchart showing a processing procedure when the outside air temperature and humidity OA2 are in the zone area.
FIG. 12 and FIG. 13 are explanatory diagrams each showing how to determine the control vector. In ST31, it is determined whether a line extended by connecting the return air temperature / humidity RA and the target outlet air temperature / humidity SA * intersects with the saturation line, that is, whether the extension line reaches a saturation line indicating a refrigerant temperature within an allowable range. ST32, ST33, FIG. 1
This is indicated by 2. If they intersect, search for the point where the saturation line H and the extension line are in contact with each other so as to operate at the sensible heat ratio SHFmin where the dehumidification capacity is the maximum, or the ET which is the lower limit of the allowable range of the refrigeration cycle, and the extension corresponding to this point The temperature / humidity KA2 of the mixed air is set on the line to be the suction air temperature / humidity KA (ST32). The temperature and humidity of the suction air mixed with the room air by introducing the outside air change between the outside temperature humidity OA2 and the return air temperature and humidity RA in relation to the temperature and humidity according to the amount of outside air introduced. As shown in the psychrometric chart, OA2
And the temperature and humidity on the straight line connecting RA and RA. So this OA
Considering a control vector connecting a point on 2-RA, the target outlet air temperature / humidity SA *, and an evaporation temperature within an allowable range on the saturation line, the indoor heat exchanger temperature should be as low as possible within the allowable range. When the control vector having the maximum dehumidifying ability, that is, a control vector having a large change in humidity with respect to a change in temperature, that is, an extension line in which the extension line is in contact with the saturation line H, the suction air temperature and humidity become KA2. At this time, the internal dividing point K between RA and OA2
The outside air introduction amount is set at the ratio of A2 (ST33), and then the process of ST39 is performed.

Here, selecting a control vector having a large change in humidity with respect to a change in temperature means that the temperature of the intake air approaches the temperature of the target blown air or the gradient of the control vector becomes large. In this case, the low temperature characteristics of the outside air are used to the maximum extent.

The method of determining the control vector when the control vector does not intersect with the saturation line in ST31 is described in ST34 to ST38 in FIG.
Indicated by. In this case, the extension line from the return air temperature / humidity RA to the target outlet air temperature / humidity SA * deviates from the saturation line indicating the allowable range of the refrigerant temperature. * Because it is not possible to directly cool and dehumidify the refrigeration cycle,
Cool and dehumidify within the allowable range of F. That is, OA2 and RA
On the OA2-RA including the target air temperature and humidity S
The refrigeration cycle was operated as a control vector by connecting the same level of humidity as that of A * (on the line parallel to the horizontal axis passing through SA *) and the allowable temperature on the saturation line, and the refrigeration cycle was overcooled. In this case, the outlet side air flowing out of the indoor heat exchanger 3 is heated by the heater 4, and the target outlet air temperature and humidity SA *
Get. At this time, when importance is placed on energy saving, when the return air temperature / humidity RA is cooled and reheated, and when the outside temperature / humidity OA2 is cooled and reheated, the air conditioning capacity which is an input to the air conditioner is determined. By comparing the sum of the inputs to the heater 4 at the time of reheating, the operation is performed with the smaller total input energy. Here, the outside air introduction amount is set to 0% or 100% of the intake air amount. For example, even if the outside air introduction amount is set to 0% or 100%, the configuration or installation of the outside air introduction means 6 is actually performed. Depending on the condition, it may not be completely 0% or 100%. In this case, the operation may be performed so that the outside air introduction unit 6 can minimize or maximize the introduction of outside air.

In the processing flow, the return air temperature / humidity RA is cooled and dehumidified and reheated in ST34, and the target air temperature / humidity S
The air conditioning capacity at the time of A * and the input energy to the heater 4 are calculated to be E (RA). The input energy to the heater 4 is calculated and set as E (OA2). In ST36, E (RA) and E (O)
A2) is compared, and the smaller of the total input energy is selected in ST37 and ST38, and the outside air introduction amount (0 or 10) is selected.
0%: minimum or maximum), the suction air temperature / humidity KA, the heater input amount, and the like.

In ST39, a control vector for determining operation control is obtained from the intake air temperature / humidity KA and the target outlet temperature / humidity SA *. In ST61 (operation control step), the refrigeration cycle is operated based on the control vector determined by the outside air amount control means 83 and the operation operation control means 84. In addition, heating is performed as necessary. In fact, the operating frequency of the compressor,
Each component of the air conditioner is operated according to the rotation speed of the indoor and outdoor fans, the input of the heater 4, and the amount of outside air introduced. By repeating ST31 to ST39 and ST61 for a certain period of time, for example, in a cycle of about 1 minute, the indoor air condition gradually becomes the target indoor air temperature and humidity t, and the air conditioning of the indoor 2 is performed.

The zone has a lower enthalpy and a lower humidity than the return air temperature and humidity RA, and the return air temperature and humidity R
A description will be given of control when the outside air temperature and humidity OA3 exists in this zone, which is an area on the lower humidity side than the line B connecting A and the target outlet air temperature and humidity SA *, that is, the area below the straight line B. In other words, in the area of this zone, in the area where the outside air enthalpy is smaller than the return air enthalpy and the outside air humidity is lower than the return air humidity, the rate of change of the humidity with respect to the temperature of the outside air and the return air is the target. This is a region excluding the outside air temperature and humidity, which is smaller than the rate of change of humidity with respect to the temperature of the blown air and return air. When the outside air is in the zone, the low humidity characteristic of the outside air is used to introduce the outside air and mainly use it for lowering the humidity of the indoor air. Then, control is performed to lower the temperature of the indoor air. If the humidity is not enough due to outside air, lower the humidity with a refrigeration cycle.

FIG. 14 is a flowchart showing a processing procedure when the outside temperature and humidity OA3 is in the zone area.
FIG. 15, FIG. 16, and FIG. 17 are explanatory diagrams each showing how to determine the control vector. In this case, the suction air temperature and humidity K
A has the smallest enthalpy when it is the same as the outside temperature and humidity OA3. Therefore, in ST41, it is determined whether or not a line extended by connecting the outside air temperature and humidity OA3 and the target outlet air temperature and humidity SA * intersects with the saturation line, that is, whether or not this extension line reaches a saturation line indicating a refrigerant temperature within an allowable range. ST42 to ST45, and FIGS. 15 and 16 show how to determine and determine the control vector when they intersect. In this case, the refrigeration cycle is set to operate at the sensible heat ratio SHFmax, utilizing the low humidity characteristics of the outside air. The temperature and humidity of the suction air mixed with the room air by introducing the outside air vary between the outside temperature humidity OA3 and the return air temperature and humidity RA in relation to the temperature and humidity according to the amount of outside air introduced. OA3 in the psychrometric chart shown in FIG.
And the temperature and humidity on the straight line connecting RA and RA. So this OA
Considering a control vector connecting the point on 3-RA, the target outlet air temperature / humidity SA *, and the evaporation temperature within an allowable range on the saturation line, the dehumidifying ability is minimum, that is, the change in humidity with respect to the change in temperature is small. When the control vector is selected, OA3 in FIG. 15 and KA3 having the same humidity as SA * in FIG. 16 become the intake air temperature and humidity KA.

In the processing flow, the absolute humidity of the outside air is compared with the absolute humidity of the target blown air in ST42. If the absolute humidity of the outside air is higher, the outside air introduction amount is set to 100% as shown in FIG. Then, the outside air temperature and humidity OA3 is set to the suction air temperature and humidity KA (ST43). At this time, if the outside air introduction amount cannot be actually set to 100%, the outside air introduction means 6
And the maximum amount that can be introduced. That is, as much outside air as possible is introduced. In the case where the absolute humidity of the target blown air is higher than the outside air in the comparison in ST42, as shown in FIG. 16, the sensible heat ratio SHFmax, in this case, becomes approximately 1 defined on the humid air chart. The temperature / humidity KA3 is set to the suction air temperature / humidity KA (ST44). At this time, the outside air introduction amount is set at the ratio of RA and the inner dividing point KA3 of OA3 (ST45), and then the process of ST51 is performed.

Here, selecting a control vector having a small change in humidity with respect to a change in temperature means that the humidity of the intake air approaches the humidity of the target blown air, or the inclination of the control vector becomes small. In this case, the low humidity characteristics of the outside air are used to the maximum extent.

The method of deciding the control vector when it does not cross the saturation line in ST41 is described in ST46 to ST50, FIG.
Indicated by. In this case, the extension line from the outside air temperature and humidity OA3 to the target outlet air temperature and humidity SA * deviates from the saturation line indicating the allowable refrigerant temperature, and the outside air temperature and humidity OA
Since the cooling air dehumidification cannot be performed directly from Step 3 to the target outlet air temperature and humidity SA *, the cooling air dehumidification is performed within the allowable range of the SHF of the refrigeration cycle. That is, OA3 including OA3 and RA
-A point on RA and the same level of humidity as target outlet air temperature / humidity SA * (on SA * and on a line parallel to the horizontal axis)
And the evaporating temperature within the allowable range on the saturation line, the refrigeration cycle is operated as a control vector, and the heater 4 heats the outlet-side air flowing out of the indoor heat exchanger 3 when it is overcooled, so that the target blowing is performed. Obtain the air temperature and humidity SA *. At this time, when importance is placed on energy saving, the return air temperature / humidity RA is cooled and reheated, and the outside air temperature / humidity OA
When cooling and reheating the air conditioner 3, the air conditioner, which is an input to the air conditioner, and the sum of the input to the heater 4 at the time of reheating are compared, and the operation is performed with the smaller total input energy.

In the processing flow, the return air temperature / humidity RA is cooled and dehumidified and reheated in ST46, and the target outlet air temperature / humidity S
The air-conditioning capacity at the time of A * and the input energy to the heater 4 are calculated to be E (RA). The input energy to the heater 4 is calculated and set to E (OA3). E (RA) and E (O) in ST48
A3) is compared, and the smaller of the total input energy is selected in ST49 and ST50, and the outside air introduction amount (0 or 10) is selected.
0%: minimum or maximum), the suction air temperature / humidity KA, the heater input amount, and the like.

In ST51, a control vector for determining operation control is obtained from the intake air temperature / humidity KA and the target outlet temperature / humidity SA *. In ST61 (operation control step), the refrigeration cycle is operated based on the control vector determined by the outside air amount control means 83 and the operation operation control means 84. Heating is performed if necessary. Actually, each component of the air conditioner is operated according to the operating frequency of the compressor, the rotational speeds of the indoor and outdoor fans, the input of the heater 4, and the amount of outside air introduced. ST41 to ST51, ST61 for a certain time,
For example, by repeating a cycle of about 1 minute, the indoor air condition gradually becomes the target indoor air temperature and humidity t, and the air conditioning of the indoor 2 is performed.

In the above, it is divided into whether or not outside air is introduced into the zone, the other zone, and the zone. In the case of one zone, the outside air enthalpy is larger than the return air enthalpy, so air conditioning is performed with a refrigeration cycle without introducing outside air, and the other zone,
In the case of, since the outside air enthalpy is smaller than the return air enthalpy, outside air is introduced as much as possible and used for indoor air conditioning. In addition, the operation can be divided into zones in which the operation having a large dehumidifying capacity or the high sensible heat operation is performed based on the air conditioning capacity of the refrigeration cycle. In the case of one zone, the refrigeration cycle operates with a large dehumidifying capacity by utilizing the low temperature characteristics of the outside air. In the case of the other zone, the refrigeration cycle performs a high sensible heat operation by utilizing the low humidity characteristics of the outside air.
In this way, by dividing into zones according to the temperature and humidity state of the outside air with respect to the temperature and humidity state of the indoor air, and setting appropriate controls for each, the amount of outside air introduced is set to the optimal amount for the air conditioning target, without wasteful work In addition, it is possible to maximize the use of the outside air and save energy.

As described above, outside air is positively introduced according to the outdoor air condition relative to the indoor air condition to effectively utilize the air for air conditioning, and minimize the energy of the air to be heat-treated by the air conditioner. Therefore, energy can be saved while introducing fresh outside air. In particular, since the fine control is performed in consideration of not only the temperature of the outside air and the indoor air but also the humidity, a more comfortable indoor space can be obtained. In addition, since the target indoor air state is approached while controlling while changing the temperature and the humidity in relation to each other, the target indoor space can be obtained more quickly, and energy can be saved. In addition, by keeping the indoor air fresh with fresh outside air, it is possible to secure good quality indoor air, and it can be expected that this will have a positive effect on the health of indoor people or animals and plants.

The above description has been made mainly on the ventilation between the outside of the room 2 and the outside of the room 2 as the center. Ventilation has two functions, intake and exhaust, which are classified according to the natural flow or the blower. The outside air from the outside is mainly discharged by a fan, that is, mechanical ventilation or forced ventilation, and the exhaust is naturally exhausted. The configuration has been described. In the present invention, the above description has been given for the sake of controlling where to focus.However, a room having a different temperature and humidity state in another room such as a sanitary room or a basement, such as a sanitary room or a basement, Naturally, the control of the present invention may be used for adjusting the temperature and humidity conditions at night. Further, as the type of ventilation, intake and exhaust may be forcibly performed, or in a specific temperature / humidity environment, for example, an environment in which the outside air introduction amount is always a fixed value, the ventilation opening is not provided without providing the ventilation fan 31. May be provided and ventilation may be performed by an indoor fan. Although the present invention has been described on the air chart, these can be easily obtained by vector calculation on the air chart described in the microcomputer. Alternatively, as described above, the psychrometric chart summarizes the relationship between the physical quantities in the drawing, and the physical quantities can be obtained by calculation. For example, in the control contents of how to operate a refrigeration cycle, a blower, a ventilation fan, etc. in order to obtain a set target temperature / humidity t *, in a state of a current return air temperature / humidity RA and a current capacity. The supply air temperature and humidity SA are maintained, and QL [Kcal /
The absolute value of h] is expressed as: air volume * density * difference in enthalpy between supply air and return air. That is, | QL
| = (VRA + VOA) * ρa * (iRA-iSA). The load ratio between latent heat and sensible heat for this load condition is LH [g] / SH [゜ C] = (Xra-Xsa)
/ (Tra-Tsa), and thus the calculation of the present invention, such as the load state, can be grasped by a combination of calculation expressions without using any air map.

An air conditioner is used for cooling from spring to autumn and mainly for heating in winter. However, it is a reality that there is not much application of a load of full capacity due to, for example, a decrease in temperature at night. For example, in the Kanto area, the average load factor is reported to be 13.3%. FIG. 18 shows an explanatory diagram of the distribution of outside air temperature and humidity. From May operating mainly for cooling
The horizontal axis shows the temperature and humidity on the horizontal axis and the absolute humidity on the vertical axis, with the temperature and humidity of the outside air in Tokyo at all times of the day and night until the month. The number of hours is listed. “a” indicates that, of the 744 hours in May, the time when the temperature and the humidity are lower than the reference value is 595 hours, and the time when the temperature is low and the humidity is high is 140 hours.
b shows that in June, the time when the temperature is low and the humidity is high is 458 hours, the time when both the temperature and the humidity are low is 203 hours, and the time when both the temperature and the humidity are high is 59 hours. c: July: 420 hours of low temperature and high humidity, 280 hours of high temperature and humidity
The time when both time and temperature and humidity are low indicates 40 hours.
d indicates that in August, the time when both the temperature and the humidity are high is 430 hours, and the time when the temperature is low and the humidity is high is 312 hours. e is 9
363 hours when the temperature is low and the humidity is high, 187 hours when the temperature and humidity are high, and 1 when the temperature and humidity are low
70 hours is shown. f indicates the total time from May to September.

It can be seen that only 26% of the outside air has a temperature and humidity higher than the target values of the room temperature and the humidity in the five months from May to September. Further, it can be seen that the time when the humidity is high is extremely large even when the temperature is low. Naturally, in the air conditioner, it is necessary to remove the heat load and humidity generated in the room, and it can be roughly determined from this figure that the use of the low temperature of the outside air is very effective. Further, the indoor load can be obtained by a predetermined coefficient * indoor area * temperature difference, and when this load amount is obtained from each temperature distribution and averaged, the average annual load factor of the air conditioner is only 13.3% of the maximum cooling capacity. Therefore, the cooling capacity and the reheating capacity can be reduced as much as possible by effectively utilizing the ventilation by the outside air. Of course, this relationship changes depending on regional characteristics and weather fluctuations. You can do it. As a result, it is possible to avoid the repetition of turning on and off small loads such as night-time cooling of the air conditioner by introducing outside air, which not only reduces energy but also reduces noise and prevents the body from getting too cold. can get. Similarly, it can respond effectively to cooling needs in the interim period such as spring and autumn. Conventionally, ventilation fans have been considered mainly for ventilation of indoor contaminated air, but energy can be reduced by accurately utilizing the temperature and humidity of the outside air introduced.

As described above, the psychrometric chart is employed because it is easy to understand when determining the magnitude of the enthalpy difference and the positional relationship between temperature and humidity. Therefore, the psychrometric chart does not need to be used. However, the relationship between temperature and humidity may be stored in the microcomputer as a chart. According to the present invention, the temperature and humidity are adjusted by introducing outside air as described above. However, simultaneous processing can be performed continuously by using digital control. In addition, calculation and operation may be performed by intermittent processing in consideration of the delay due to the thermal time constant of the room temperature. In addition, the temperature and humidity detected for this processing are treated as one parameter to obtain the operation amount such as the setting of the target value and the capability, etc., and the operation of the equipment is explained based on this data. An operation for combining individual parameters as separate parameters is also possible. That is, while grasping the temperature / humidity state, the humidity may be controlled only by controlling the refrigeration cycle or the ventilator without controlling the humidity in a predetermined range or in some cases, as already described when the humidity does not significantly change. It is natural to be as effective. As described above, the present invention changes at least one of the temperature and humidity of room air in which room air is sucked from an inlet, blown out from an outlet and circulated by an indoor fan of an air conditioner indoor unit having an inlet and an outlet in the room. The air-conditioning system has a ventilation fan on the suction side of the indoor unit, an opening for introducing outside air from the outside to the room or exhausting air from the room to the outside, a shutter for opening and closing this opening, and ventilation. A device for adjusting the amount, for example, adjusting the number of rotations of the fan or changing the angle of the shutter to adjust the ventilation may be provided. Thereby, in the indoor heat exchanger of the air conditioner, both the return air from the room sucked from the suction port and the outside air introduced by the ventilation fan are cooled or heated. The temperature and humidity of the outside air are detected, and the temperature and humidity of the air sucked into the air conditioner from the room, and the temperature and humidity of the air blown out from the air conditioner and circulated into the room are also detected. That is, adjust the refrigeration cycle of the air conditioner, change the number of rotations of the indoor fan, adjust the number of rotations of the ventilation fan and the shutter so that the temperature and humidity returned to the air conditioner approach the target values of temperature and humidity. ing.

Although the present invention detects the temperature and humidity of each part, the temperature is related to the load and air flow in the room, and may be measured directly or indirectly. Humidity also depends on the season and weather, and strict measurement is not always necessary for indoor air conditioning.Therefore, it is indirectly detected using stored data and parameters such as the temperature of outside air. Is also good. Alternatively, data detected from a distant place may be sent as information on a telephone line or a power line, and based on this information, not only the operation of the device but also the operation relating to the control of temperature and humidity may be performed.

With the device of the present invention, when both the temperature and the humidity in summer are high, the ventilation by the outside air is hardly performed.
When the temperature is relatively low and the humidity is low, when the temperature and humidity are low,
When the temperature is high but the humidity is low, the ventilation rate is set to reduce the energy used for air conditioning. As an example of the energy saving effect, when the outside air temperature and humidity are low and high humidity in a zone, the load when the room is cooled by using the low temperature of the outside air and the maximum dehumidification operation is performed in a refrigeration cycle will be estimated. Outside temperature 21 which usually appears frequently in June
° C and an absolute humidity of 12 g / kg (about 77% relative humidity).
It is assumed that there are two persons in this room at 2.8 g / kg (about 60% relative humidity). The sensible heat ratio SHFmin is obtained when the introduction ratio of the return air and the outside air is 0.65: 0.35, and the load ratio due to the enthalpy (the enthalpy difference between the intake air and the target air) / (return air and the target air). (Enthalpy difference of air) is 0.5. That is,
In the case where the outside air is actively introduced as in the present embodiment, for example, when the outside air is introduced by 35% of the total air volume of the indoor unit to perform air conditioning, unlike the conventional case, the outside air is introduced without introducing the outside air. Air conditioning can be performed with half the energy of air conditioning when only return air is circulated as suction air.

In the above description, the control in the case of the operation with emphasis on energy saving has been described. However, if a predetermined ventilation rate is required, the same control can be performed after securing the ventilation rate. Further, the heater 4 is not always necessary, and may not be particularly provided. In this case, when the control vector cannot be realized due to insufficient dehumidification even with the maximum dehumidification operation SHFmin of the refrigeration cycle, the target blown air is operated so as to satisfy the temperature by increasing the humidity thereof, and the outlet air flowing out of the indoor heat exchanger 3 is discharged. It is also possible to provide a dehumidifying means for dehumidifying and control so as to reach the target outlet air temperature and humidity SA *. Further, the heating means 4 may not be provided inside the indoor unit 1, and the air flow path downstream of the indoor heat exchanger 3, that is, the outlet of the air flowing out of the indoor heat exchanger 3, the target indoor air temperature and humidity, What is necessary is just to be the position which heats the air which flows through the air flow path between the area | regions which want to do, for example, the living area of a person.

When an outside air treatment filter is provided on the entire surface of the outside air introduction port of the outside air introduction means 6 to prevent pollen, dust, dust and the like mixed in the outside air from being taken into the room, the indoor space can be made even more healthy. Can be kept comfortable and comfortable. If at least a part of the outside air treatment filter is made of a material that adsorbs offensive odor or the like, it is possible to prevent the offensive odor mixed with the outside air from entering the room on a garbage collection day or the like.

As described above, the air condition involved in the control when air conditioning the room includes return air (RA) as room air, outside air (OA), mixed air (KA) as suction, and room air. Blowing air (S
The respective temperature and humidity of A) are related to each other in the air condition. Therefore, all of these values may be obtained by calculation without actually detecting them. Further, it may be calculated by other methods, for example, from information such as the frequency of the compressor, the evaporation temperature, the tube temperature, and the rotation speed of the fan.
For example, return air, blown air,
The temperature and humidity of the outside air are detected by measurement, and the temperature and humidity of the mixed air are calculated. Also, instead of detecting the temperature and humidity of the outside air by measurement, the temperature and humidity of the intake air in which the outside air and the return air are mixed are measured and detected, and the detected value, the outside air volume VOA, and the return air volume VRA are used to calculate the outside air volume. May be calculated. Further, the temperature is also related to the indoor load and air flow, and can be indirectly obtained from these. In addition, the humidity may be affected by the season or weather, etc.In some cases, it is not necessary to perform strict measurement when performing indoor air conditioning. , May be detected by inference or calculation indirectly from other parameters. Also,
If both return air and blown air conditions are measured, the indoor air-conditioning load can be accurately grasped.However, when this indoor air-conditioning load can be estimated from other information such as the operation state of the refrigeration cycle, Alternatively, the air condition of one of the return air and the blown air may be detected by measurement, and the other may be estimated. In addition, as the indoor air condition, the temperature and humidity of the return air were detected, but the return air is not limited to the return air, and the temperature at that location is detected by a blowout air or air in another indoor space, for example, a sensor provided at a predetermined location in the room. And humidity may be detected and used. In the case of a predetermined place in the room, the air condition while the indoor air-conditioning load is being received is detected. However, if the indoor air-conditioning load from the measurement location is grasped, the control can be similarly performed.

Embodiment 2 In the first embodiment, the outside air introducing means 6 is formed integrally with the indoor unit 1, whereby outside air is introduced into the indoor unit 1, and the indoor air circulates and mixes with the return air taken into the indoor unit 1. Thus, the intake air to the indoor heat exchanger 3 was used.
In the present embodiment, the outside air introducing means 6 is not integrated with the indoor unit 1 but is separately disposed separately from the indoor unit 1 so as to take outside air into the room 2. However, the operation of the air conditioner, refrigeration cycle, and ventilator is performed by detecting the temperature and humidity of the air outside and inside the room, and using the correlation of each physical quantity shown on the air chart or the air chart. The state is treated in a vector manner, the enthalpy and the like are calculated, and the control for reducing the energy used is performed in the same manner as in the first embodiment. Further, not only such configuration and operation but also similar effects can be obtained. This is the same as in the first embodiment.

FIG. 19 is a partial configuration diagram showing the configuration in the vicinity of indoor unit 1 arranged in the room of the air conditioner according to the present embodiment. The same reference numerals as those described in the drawings described in the first embodiment denote the same components. The outside air introduction means 6 is attached to, for example, a wall surface in a room,
Fresh outdoor air can be taken into the room. The outside air introduction means 6 has, for example, a damper 67 as an outside air introduction port opening / closing mechanism and a fan 31 for sucking outside air. Thus, the amount of outside air introduced into the room can be controlled. A control signal line 69 is connected to a microprocessor in the electronic box 32 installed in the indoor unit 1. For example, a control signal from the outside air amount control unit 83 in the microprocessor is transmitted to the outside air introduction unit 6, and the opening / closing control and the opening degree control of the damper 67 and the rotation speed control of the fan 31 are actually performed.

FIGS. 19 and 20 are views for explaining the configuration and operation of an air conditioner according to another embodiment of the present invention. In the first embodiment, a ventilation fan 6 for taking in outside air is connected to an indoor unit of the air conditioner, that is, an indoor unit 1. Are provided at different positions without being integrated, and the same reference numerals as those described above denote the same components. FIG. 20 is a diagram illustrating the contents of control for controlling the temperature and humidity integrally to approach a target value in an air conditioner having a structure in which an indoor unit and a ventilation fan are separated. As shown in FIGS. 19 and 20, suction air, which is room air returning to the indoor heat exchanger 3 in the indoor unit 1, ie, return air, is cooled and cooled in the heat exchanger 3 by the refrigerant circulating in the refrigeration cycle. The air is dehumidified and supplied to the room as blown air, that is, supply air by the rotation of the indoor fan 5. The return air and the supply air have the same air volume and VRA. A ventilation fan 6 serving as outside air introduction means provided adjacent to the air conditioner at a position different from the indoor unit, for example, on the lower wall surface at the outlet of the air conditioner, supplies outside air to the same room. The supply air and the outside air flow are added, that is, the return air flow VRA and the outside air flow VOA are mixed air in which the air flow is VRA + VOA, and the mixed air circulates through the room. When the number of rotations of the indoor fan is constant, almost constant return air is secured. If the relationship between the rotation speed of the fan and the air volume is stored in the memory of the microcomputer, the air volume at each air volume ratio and the air volume at the time of calculating the load by Equation 1 can be easily calculated. The temperature and humidity KA of the mixed air circulating in the room is equal to the load Q
The temperature is increased and humidified by the sensible heat component SH and the latent heat component LH of L, and the temperature and humidity of the return air temperature and humidity RA are set.

The symbols T and X, such as TOA and XOA, shown in the figure indicate temperature and humidity as described above, and the humidity is an absolute value. In the detecting means for measuring the temperature and the humidity, the suction port temperature detecting means 9 and the suction port humidity detecting means 10 are attached to the position of the suction grill 35 of the air conditioner as shown in FIG. Further, as shown in FIG. 1, the outside air introducing means 6 which is a ventilation fan is located at a position different from that in FIG. 1, but the outside air temperature detecting means 11 and the outside air humidity detecting means 12 are provided in the same manner as in FIG. Attached to the indoor side. The outlet temperature detecting means 13 and the outlet humidity detecting means 14
Is also provided at the outlet of the air conditioner as shown in FIG. However, in the configuration of FIG. 1, the outlet temperature detecting means 13 and the outlet humidity detecting means 14 are mounted inside the outlet grill 34 of the air conditioner so as to measure the temperature of the mixed air. The air from the outlet is return air, and the temperature and humidity of the mixed air, that is, the air circulating in the room, are the temperature and humidity measured near the grill at the outlet and the temperature measured at the outlet of the ventilation fan. With respect to the humidity and the humidity, the air volume at each position is obtained from the rotation speeds of the indoor fan and the ventilation fan, and is obtained as an average value according to the air volume ratio. Of course, if the air outlet temperature detecting means 13 and the air outlet humidity detecting means 14 are structured such that the air conditioner indoor unit and the ventilation fan are arranged adjacent to each other and the air is blown downward from the indoor unit, both air outside the lower part of the indoor unit 1 are discharged. May be arranged at a position where they are mixed, and directly measured by the detectors 52 and 53 which detect the temperature and humidity of the mixed air. Even if the indoor unit 1 of the air conditioner and the ventilation fan are located at a distance from each other, a detector for measuring the temperature and humidity of the mixed air may be provided at the mixing position.

In the first embodiment, the mixed air of the outside air and the return air circulates in the room, becomes the air sucked into the indoor heat exchanger 3, and exchanges heat with the refrigerant flowing through the indoor heat exchanger 3.
The temperature / humidity SA of the blown air circulates indoors and becomes the temperature / humidity RA of the return air that returns after receiving a heat load in the room,
The load QL can be known from the temperature and humidity SA and RA.
That is, in the psychrometric chart, the temperature / humidity RA is obtained by adding the vector of the load QL to the temperature / humidity SA. Since the load QL vector is known, the load QL vector can be moved in parallel so that the return air temperature / humidity RA overlaps the target temperature / humidity t to obtain the target outlet air temperature / humidity SA *. The temperature / humidity SA of the supply air is detected or known from the indoor load. In this state, the temperature / humidity KA of the mixed air is the outside air temperature / humidity OA and the return air temperature / humidity R.
A determination is made as to where on the line segment A the difference between the enthalpy of the temperature and humidity KA of the mixed air and the enthalpy of the temperature and humidity SA of the supply air is minimized, i.e., i (KA * -SA)
*) If the minimum is obtained, KA * with the lowest energy can be obtained. On the other hand, in the second embodiment, only the return air becomes the intake air and exchanges heat with the refrigerant, so that the air blown out from the indoor unit 1 and the outside air are mixed. Therefore, in the second embodiment, the temperature / humidity OA and the air volume VOA of the outside air and the temperature / humidity SA and the air volume VSA of the blown air are detected or can be obtained from the detected values. Similarly, the temperature / humidity KA of the mixed air, that is, the temperature / humidity KA of the circulating air circulating indoors, is on a line connecting the temperature / humidity OA of the outside air and the temperature / humidity SA of the blown air on the psychrometric chart, and at a point divided by the air volume ratio. Desired. The temperature / humidity KA of the mixed air circulates in the room, receives the load QL, and returns to the air conditioner as return air RA. That is, the temperature / humidity RA is obtained by adding the vector of the load QL to the temperature / humidity KA calculated or measured in the psychrometric chart. Since this load QL vector is known, the load QL vector can be translated so that the return air temperature / humidity RA overlaps the target temperature / humidity t, and the target mixed air temperature / humidity KA * can be obtained. In this state, where the temperature and humidity SA of the blown air are on the line segment of the outside air temperature and humidity OA and the mixed air temperature and humidity KA * circulating in the room, the enthalpy of the return air temperature and humidity RA and the enthalpy of the supply air temperature and humidity SA Is obtained, i.e., if i (RA-SA *) minimum is obtained, SA * having the smallest energy can be obtained.

In the first embodiment, i (KA * -SA *) mi
As a method of obtaining the nimum, KA is located somewhere in the subdivision of OA and RA.
SA *) x air volume, so KA * is RA and OA
The smaller the i (KA * -SA *) on the line segment, the lower the capability. However, the outside air OA may be various, and FIG.
In the zone of ゾ ー ン, when RA = KA, KA * -SA * is minimized, and energy is smaller when no outside air is introduced. In the zone of FIG. 8, the temperature / humidity KA * of the mixed air having an intersection where the vector line passing through KA and SA * on the dividing point between OA and RA contacts the saturation line H, and KA * -SA * is minimized. Become. In the zone of FIG. 8, the vector line passing through KA and SA * on the subdivision point of OA and RA has an intersection with the saturation line H, but the temperature and humidity KA * of the mixed air where SHF = 1 is satisfied.
However, KA * -SA * is minimized. On the other hand, in Embodiment 2, the temperature and humidity RA of the return air are cooled and dehumidified to become the temperature and humidity SA of the blown air, and the temperature and humidity SA of the blown air.
And the temperature / humidity OA of the outside air are mixed to become the temperature / humidity KA of the circulating air circulating in the room, and the indoor load QL is added to the temperature / humidity KA of the mixed air to become the temperature / humidity RA of the return air. As a method of obtaining i (RA-SA *) minimum, the mixed air KA is located somewhere in the internal dividing point between the outside air OA and the blown air SA *.
Since (RA-SA *) × air volume, the temperature / humidity KA * of the mixed air is smaller as i (RA-SA *) on the line segment of the temperature / humidity OA of the outside air and the temperature / humidity SA * of the supply air. Ability decreases. However, what is known is the return air and the mixed air, and the outside air OA may be various.

The i (RA-SA *) mini of the second embodiment
The method of obtaining mum is shown in the psychrometric diagrams of FIGS. 21, 22, and 23. FIG. 21 is an explanatory diagram of the zone, and the hatched portion in the figure indicates the range of the zone. In the figure, the method of using fresh outside air differs depending on the zones classified by the return air temperature / humidity RA and the target mixed air temperature / humidity KA *. It is desirable that the temperature / humidity OA1 of the outside air shown in FIG. The temperature / humidity SA of the air blown out of the air conditioner must be created on the opposite side of the temperature / humidity KA1 of the outside air with the temperature / humidity KA * of the target mixed air, which increases the energy of the refrigeration cycle. Enthalpy difference i (R
A-SA *) minimum is minimum when SA * = KA *. FIG. 22 is an explanatory diagram of the zone, and the hatched portion in the figure indicates the range of the zone. Outside air temperature and humidity OA2
Is lower than the energy of KA *, and the vector RA-KA *
In the zone where the temperature is lower, the refrigeration cycle makes full use of the dehumidifying capacity by making full use of the low-temperature characteristics of the outside air. As a result, energy can be saved, but the dehumidifying capacity is limited. For example, when the extension line of the vector RA-SA * cannot be in contact with the saturation line H or when the indoor heat exchanger temperature ET is lower than the allowable range. The minimum value of the sensible heat ratio, that is, SHFRminimum, which is the limit of the gradient of the vector RA-SA *, is selected. In the zone, the temperature / humidity SA of the air discharged from the air conditioner comes on the opposite side of the temperature / humidity OA1 of the outside air with the temperature / humidity KA * of the target mixed air.
If the temperature and humidity SA of the target blown air having a point where the extension line of the vector RA-SA * is in contact with the saturation line H is selected, the target supply air temperature and humidity SA * at which the enthalpy difference RA-SA * of the refrigeration cycle becomes the smallest can be obtained. .

FIG. 23 is an explanatory view of a zone. The hatched portion in the figure indicates the range of the zone. The refrigeration cycle performs high sensible heat operation using the low humidity characteristics of the outside air in the zone where the temperature and humidity OA3 of the outside air are lower in energy than KA * and lower in humidity than the vector RA-KA *. . The temperature and humidity SA of the air discharged from the air conditioner, which is set on the opposite side of the temperature and humidity OA1 of the outside air with respect to the temperature and humidity KA * of the target mixed air, are the temperature and humidity RA of the return air and the temperature and humidity SA * of the blown air. When the diagram becomes horizontal, that is, when SHF = 1, the enthalpy difference RA-SA * of the refrigeration cycle becomes the smallest. The range in which the use of outside air in the zone according to the configuration of the second embodiment is not desirable increases as compared with the integrated configuration of the first embodiment. The control operation in the case of the configuration of the second embodiment will be described with reference to FIG. , The magnitude of the load is obtained as QL = (VRA + VOA) × density × enthalpy difference, and this load is the enthalpy difference between the temperature and humidity RA of the return air and the temperature and humidity KA of the mixed air.
It is divided into a sensible heat load SH and a latent heat load LH. In order to set the room at the target temperature / humidity t, the temperature / humidity RA of the return air must be set to the target temperature / humidity t, and the load is moved in parallel to determine the target mixed air KA *. Temperature and humidity K of this target mixed air
The conditions under which the energy is smaller than that of A * due to the temperature and humidity of the outside air, that is, the condition in which the enthalpy difference between the temperature and humidity of the return air and the temperature and humidity of the target supply air is minimized are shown in FIGS.
2. The selection is made as shown in FIG. In the zone of FIG. 24 in which the temperature and humidity of the outside air are lower than the vector RA-KA *, the refrigeration cycle performs a high sensible heat operation, that is, an operation of SHF = 1, using the low humidity characteristics of the outside air. By determining the temperature and humidity of each air in this manner, the indoor heat exchanger temperature ET * having a sensible heat ratio within an allowable range is obtained. Further, the refrigeration cycle capacity Qe, that is, the vector RA * SA * is determined. Further, SA * is determined on the line segment of the temperature and humidity OA and KA *, and the air flow ratio between the supply air and the outside air is determined by the proportional ratios x * and y *. As described above, the basic concept of minimizing the enthalpy difference of the temperature and humidity changes while taking into account the allowable range of the SHF of the refrigeration cycle and the like is the same as in the first embodiment, and the energy saving operation of the air conditioner becomes possible. .

As the axis of enthalpy i is described in the psychrometric chart of FIG. 3, the oblique axis of enthalpy i is uniquely determined according to the following relationship between temperature and absolute humidity. That is, i = 0.24 * temperature + (597.5 + 0.441 * temperature) * absolute humidity. Therefore, if the temperature and the humidity are detected, the microcomputer can calculate the magnitude of the indoor load, which is energy, and the load ratio of latent heat and heat demand. Ql [K, the magnitude of the indoor load
The absolute value of cal / h] is expressed as: air volume * density * difference in enthalpy between mixed air and return air. The load ratio between latent heat and sensible heat for this load condition is LH [g] / SH [゜ C] = (Xra-Xk
a) / (Tra-Tka), and the state of the load can be grasped by calculation. The calculation of the x: y air volume ratio is determined because, for example, the relationship between the number of revolutions of the fan and the air volume is stored in the microcomputer of the control device. OA and KA from the temperature and humidity KA and the air volume ratio
Obtained on an extension of The enthalpy between the straight line connecting the return air temperature / humidity RA and the obtained supply air temperature / humidity SA is the capacity Qe of the air conditioner. Furthermore, the point where this extension line intersects with the saturation line at a relative humidity of 100% is regarded as the evaporation temperature ET. Since the data of the psychrometric chart is stored, these calculations are easily performed by the microcomputer of the control device.

The idea of increasing the frequency of the compressor with respect to the increase in the air-conditioning capacity Qe is described in detail in Equation 2 and the like. However, since the air-conditioning capacity Qe is determined by the vector (RA, SA), the increase ΔQe is (Qe + ΔQe) / Qe = [i
(RA-SA *)] / [i (RA-SA)]. On the other hand, if the current frequency is fz, the increment of the frequency corresponds to the increase of the air conditioning capacity (fz + Δfz) /
fz. When the outside air introduction means 6 is provided separately from the indoor unit 1 as in the present embodiment, the outside air utilization range that saves energy is narrower than when it is provided integrally. Compared to the conventional case that does not actively use, there is an energy saving effect, and the effect on health by introducing fresh outside air is great. In addition, in such a configuration, the configuration change from the indoor unit that is currently widely used is small, and for example, it is only necessary to change the configuration so that the control signal is transmitted to the outside air introduction unit 6 through the signal line 69. realizable.
Furthermore, since it is not integrated, cleaning and maintenance of only the portion of the outside air introducing means 6 can be easily performed.

Further, since the outside air introduction means 6 is independent of the indoor unit 1, the outside air introduction means 6 may have the function of a conventional ventilation fan. That is, if the configuration is such that the indoor air can be led out of the room by, for example, inverting the fan, air conditioning with a large ventilation function can be performed. This example is shown in FIG.
It will be explained in. FIG. 25 shows an indoor heat exchanger 3 and an indoor fan 5 in the indoor unit 1 and a ventilation fan 6 as an outside air introducing means.
Are the same, 31 is a ventilation fan, and 32 is an indoor control device. The content of setting the operation with a small enthalpy difference based on the temperature and humidity of each air such as return air and supply air is the same as that described above, but the outside air introduction means 6
Is different from that of the first embodiment in that indoor air is exhausted by the ventilation fan 31. Therefore, the temperature and humidity of the return air have a form in which the exhaust air is subtracted from the indoor air in a vector manner. Ventilation fan 31
Is controlled by a signal from the indoor control device 32. FIG. 26 shows an example of another configuration. FIG. 26 also shows a configuration in which the air conditioner and the outside air introducing means 6 are provided separately, but a total heat heat exchanger, an air supply fan 44, and an exhaust fan 43 are provided in the outside air introducing means 6, and the intake air for introducing outside air is provided. In this configuration, heat generated when the indoor air is exhausted is transmitted to prevent waste of indoor thermal energy. The operation of the air supply fan 44 and the exhaust fan 43 is controlled by a signal from the indoor control device 32.
Also for this configuration, the supply of the outside air introducing means 6 requires a vector operation including the temperature and humidity of the region, but as described above, a low-energy operation setting using the enthalpy difference of the temperature and humidity is possible. Yes, further energy savings can be achieved. FIGS. 25 and 26 show an example in which the operation of the outside air introduction means is controlled by the microcomputer in the indoor control device. However, it is obvious that the operation may be controlled by another control device such as a remote controller. Although this signal is provided with a signal line and transmitted, the signal may be conveyed by a power line together with electric power, or a configuration without a signal line such as a radio wave may be employed.

Regarding the indoor heat exchanger temperature ET, which is the evaporation temperature, regardless of whether it is an integrated type or a separate type,
That there is an acceptable range and, as an example, a lower limit of 10
It has been described in 説明 C. FIGS. 27 and 28 show examples in which the lower limit is obtained from the viewpoint of the performance of the air conditioner. FIG. 27 is an explanatory diagram for setting the indoor heat exchanger temperature ET on the psychrometric chart, where P is the temperature and humidity of the air sucked into the indoor heat exchanger 3.
The temperature is 24 ° C and the relative humidity is 50%. This is the temperature / humidity KA * of the target mixed air in the integrated structure, and the temperature / humidity RA of the return air in the separate structure. The intersections of the straight lines having different sensible heat ratios SHF and the saturation lines H are ET = 1 ° C, 5 ° C, and 10 ° C, respectively. FIG. 28 shows the evaporation temperature on the horizontal axis,
As the vertical axis in FIG. 28, (a) is the sensible heat ratio, and (b) is the coefficient of performance COP of the air conditioner. From FIG. 28A, there is no difference in the sensible heat ratio below that value as the indoor heat exchanger temperature decreases. On the other hand, from (b), if the indoor heat exchanger temperature ET is lowered, the coefficient of performance COP is reduced in proportion and the performance is reduced. Therefore, as shown in the figure, the indoor heat exchanger temperature E
Even if the lower limit of T is lowered below about 5 ° C., the effect of reducing the energy is not obtained. Therefore, the saturated lower limit of about 5 ° C. is adopted as the lower limit of ET. That is, from point P in FIG.
The straight line drawn to T becomes a contact point at the point of ET = 1, and if it goes below that, the SHF rises. In the present invention, first, the target value of the temperature and humidity of the air circulating in the room in order to obtain the indoor load, for example, the air blown out of the air conditioner in the integrated type, and the temperature of the mixed air of the air conditioner circulating in the room and the outside air in the separate device It was set. Secondly, based on the temperature and humidity of each air including the outside air, the evaporation temperature which reduces the enthalpy difference between the air directly sucked into the indoor heat exchanger and the air blown out, that is, reduces the energy of the refrigeration cycle. Seeking ET. However, at this time, the description has been given of the case where the control is performed depending on which zone the temperature of the outside air is with the temperature of each air in the room. In the calculation for obtaining the SFHmin as in the zone or the like, if the saturation value described above is used from the beginning, for example, if this fixed lower limit value such as 5 ° C. is used, it is not necessary to obtain a point in contact with the saturation line H, Becomes easier. This control, whether integrated ventilation control or separate ventilation control, depends on the conditions of the area or room where the air conditioner is located, or the ratio of the air volume to be ventilated if dehumidifying operation is required due to operation requirements. First of all, it is considered that dehumidification is performed as much as possible in the indoor heat exchanger, that is, SFHmin operation is performed. Therefore, it is necessary to operate the apparatus at a fixed temperature of 5 ° C. which is the lower limit of the evaporating temperature in consideration of performance degradation. Control is simple and efficient operation can be performed. mailto: w @

Further, for such a combination of an air conditioner and a ventilator, dehumidification is required when a high-temperature and high-humidity state exists regardless of whether the ventilation control is integrated or separate, and a simpler fixed value is required. Can be controlled. As described above, in the case of the integrated ventilation control, the enthalpy of the outside air is larger than the enthalpy of the return air iRA.
If OA is small, outside air is introduced by outside air introduction means. In the case of separate ventilation control, if the enthalpy iOA of the outside air is smaller than the enthalpy iOA of the mixed air obtained by mixing the air blown out from the air conditioner and the outside air, the outside air is introduced by the outside air introduction means.
When calculating the enthalpy difference in introducing the outside air, effective dehumidification can be performed even if it is not a strict numerical value. That is, irrespective of the combination of the air conditioner and the ventilator, the relationship between the temperature and humidity iRA of the indoor air of the return air returning to the air conditioner and the enthalpy iOA of the outside air is set to iRA-iOA <α. This description is shown in FIG. In the psychrometric chart of FIG. 29, Φ indicates the relative humidity at each temperature. The temperature and humidity of the indoor air are RA and the temperature and humidity of the outside air are OA, and this enthalpy difference is obtained, and as shown in the figure, iRA-iOA <α,
Detect that a slight difference exists. By operating a ventilation fan with a constant fan rotation speed, the heat exchanger is determined from the relationship between the air volume of the outside air and the volume of the indoor air at this time. Is set as the temperature and humidity K of the air directly sucked into the air. A line connecting the K point and the fixed evaporation temperature of 5 ° C. and a target room temperature Tt
Is the target temperature and humidity t, and is controlled to this value. As a result, the difference between the enthalpy iK of the room temperature and humidity and the enthalpy it of the target temperature and humidity t is smaller than the difference of the enthalpy it of the target temperature and humidity t at point K, and the load to be cooled and dehumidified is small. Becomes As described above, the simple control that the dehumidification is performed when the target temperature is reached only by operating the ventilation fan under the condition of iRA-iOA <α.

In the above description, a heater is used as the heating means 4. However, the heating means 4 is not limited to a heater as long as it can heat air, for example, at a temperature of several degrees to 20 degrees Celsius. FIG. 30 is an explanatory diagram showing an example of a structure in which air is heated by heat exchange with a refrigerant, which is generally called a reheating method as a heating means. In the figure, 3a and 3b are two indoor heat exchangers,
26b is an expansion valve which is a pressure reducing means different from the expansion valve placed in the outdoor unit 8 of the refrigeration cycle.

In the figure, for example, during the cooling operation of the first embodiment, the outside air temperature and humidity are in the zone or the area,
Target outlet air temperature / humidity SA from return air temperature / humidity RA
When the extension of the vector to * does not intersect with the saturation line, or when the outside temperature and humidity are in the zone area, the outside temperature and humidity OA
When the extension line of the vector from No. 3 to the target outlet air temperature / humidity SA * does not intersect the saturation line, it was impossible to achieve the target outlet air temperature / humidity SA * in the refrigeration cycle. At this time, the refrigeration cycle makes the humidity coincide with the target and makes the outlet side air low in temperature, and this air is heated to achieve the target blown air temperature and humidity SA *. As shown in FIG. 30, two indoor heat exchangers 3a and 3b are provided, and one of the indoor heat exchangers 3a and 3b is provided.
a is operated as a condenser, and the other indoor heat exchanger 3b is operated as an evaporator. The indoor heat exchanger 3b that operates as an evaporator is disposed, for example, on the upstream side of the air flow path, and the indoor heat exchanger 3a that operates as a condenser is disposed, for example, on the downstream side of the air flow path. An expansion valve 26b is provided between the two indoor heat exchangers 3a and 3b.

The operation during the cooling operation of the refrigeration cycle shown in FIG. 30 will be described below. The high-pressure gas refrigerant compressed by the compressor flows from the outlet of the compressor to the outdoor heat exchanger via the four-way valve, and radiates heat to the outside air blown by the outdoor fan. The refrigerant condenses and becomes a high-pressure liquid refrigerant and flows out of the outdoor heat exchanger. Thereafter, the pressure is reduced to the intermediate pressure by the expansion valve 26 provided in the outdoor unit, and the gas is partially gasified and flows through the refrigerant pipe, so that the indoor heat exchanger 3a of the indoor unit 1
Flows into The refrigerant is further condensed in the indoor heat exchanger 3a and heats the air flowing around the refrigerant pipe of the indoor heat exchanger 3a. Thereafter, the refrigerant flowing out of the indoor heat exchanger 3a is reduced to a low pressure by the expansion valve 26b, and becomes a low-pressure two-phase refrigerant. Further, the low-pressure two-phase refrigerant flows to the indoor heat exchanger 3b, where it cools and dehumidifies the indoor air by exchanging heat with the air flowing around when collecting heat and evaporating. Then, the refrigerant flows out of the indoor heat exchanger 3b as a low-pressure gas refrigerant, flows through the refrigerant pipe 7 to the outdoor unit 8, and returns to the suction port of the compressor via the four-way valve 22. By such an operation, the indoor heat exchanger 3a serves as a heating unit, and the indoor heat exchanger 3b obtains cold heat.

By using such a reheating type heating means, for example, hydrocarbons or R290
Even if a flammable refrigerant such as that described above is used, the refrigerant does not burn and a safe air conditioner can be provided. In recent years, from the viewpoint of global environmental protection, there has been an increasing demand for using a refrigerant that does not destroy the ozone layer and has a global warming potential of 0. R29
0 satisfies this condition, but the problem is that its property is flammable. If configured as in the present embodiment, fresh outside air can be positively and effectively used,
An air conditioner which is energy-saving, has good health, and can be used safely even with a flammable refrigerant can be obtained. Further, in the present invention, the heat exchanger for heating or cooling or humidifying or dehumidifying the air circulated by the blower is provided in the refrigerant cycle for circulating the refrigerant as described above, and the temperature of the air and the amount of water vapor component in the air are provided. May be a heat exchanger that can change the temperature of the air, a simple heater such as an oil heater that can change only the temperature of the air, or an adsorption type that can mainly change the water vapor component in the air. It is clear that the present invention can be realized even when a plurality of types of devices that affect the temperature and humidity of the air circulating in the room are provided even with the dehumidifier described above, or a combination thereof.

FIG. 31 is a diagram for explaining an air conditioner.
On the ceiling 20, the air sucked from the suction grill 35 is sent to another location through a duct 48 to the auxiliary grill outlet grill 3.
Air conditioner 1 for air-conditioning the indoor air provided with air duct 4 and duct 36
, A ceiling-mounted ventilation fan 46 for taking in outside air is provided. In this way, an auxiliary grill, a circulating blower, and the like are provided in the air conditioner through the duct, and the air conditioned by one air conditioner can be blown to another place in the room or to the room of the ear. As a method of circulating air whose temperature has been adjusted indoors, there is a method of operating a fan in a room where an air conditioner exists, but the effect of cooling and heating is limited to circulation using only partial air in the room. Although it is limited, and the effect is lost in a very wide range and it is not possible to share another room together, the device of the present invention uses a circulating blower etc. to effect the temperature-controlled air through a duct It can be circulated efficiently and with low noise. Through a duct, air conditioning in another room and temperature control in multiple rooms and corridors can be performed with simple equipment. It is a matter of course that the air conditioning of each room may be provided with the humidity adjusting device of the present invention to perform humidity adjusted air conditioning. Further, even if a humidifier 50 or a heater 51 which affects the temperature and humidity of the indoor air is provided in the room, the control by the enthalpy or the like is only performed by increasing the number of the temperature and humidity of the air to be detected and controlled. It can be done with.

The present invention cools or heats room air with an air conditioner to change the temperature or humidity of room air in relation to the room air conditioner so that the room air conditioner approaches the target values of temperature and humidity. The outside air is introduced into the room by outside air introduction means capable of adjusting the amount of outside air introduced, and the outside air temperature and humidity, the temperature and humidity of the room air, and the temperature and humidity that are the target values of the room air, By changing the amount of air to be introduced, it is possible to introduce external air in accordance with the outdoor air condition and to effectively utilize the air to perform air conditioning so as to obtain a comfortable indoor space. .

Further, according to the present invention, when the enthalpy of the outside air is greater than the enthalpy of the room air, the outside air introduction means is closed to minimize the amount of outside air, thereby introducing outside air in accordance with the outdoor air condition. By effectively utilizing this, air conditioning can be performed so as to obtain a comfortable indoor space, and energy saving can be realized without performing unnecessary work.

Further, according to the present invention, the enthalpy of the outside air is smaller than the enthalpy of the room air, and the temperature and humidity of the outside air are smaller than the extension of the change from the temperature and humidity of the room air to the target values of temperature and humidity. When the temperature is low, when the temperature and humidity of the mixed air, which is a mixture of outside air and room air, approach the target values of temperature and humidity, the outside air is adjusted so that the amount of change in humidity relative to the amount of change in temperature increases. By adjusting the introduction amount, it is possible to introduce outside air according to the outdoor air condition and use it effectively to perform air conditioning so as to obtain a comfortable indoor space, and to do more wasteful work Energy savings.

Further, according to the present invention, the enthalpy of the outside air is smaller than the enthalpy of the room air, and the temperature and humidity of the outside air are lower than the extension of the change from the temperature and humidity of the room air to the target values of temperature and humidity. When the temperature is close to the target temperature and humidity from the temperature and humidity of the mixed air that mixes the outside air and the indoor air, the outside air is introduced so that the change in humidity with respect to the change in temperature is small. By adjusting the volume, outside air can be introduced according to the outdoor air condition, and this can be used effectively to perform air conditioning so that a comfortable indoor space can be obtained, and without doing unnecessary work. Energy saving can be realized.

Further, the present invention provides an indoor heat exchanger for exchanging heat between hot or cold heat transported by a heat transport means and suction air to change at least one of the temperature and humidity of the suction air; An indoor fan that blows air after the heat exchange by the exchanger into the room as blown air,
An outside air introduction unit that introduces outside air from outside the room, an outside air temperature detection unit that detects the temperature of the outside air, an outside air humidity detection unit that detects the humidity of the outside air, an indoor temperature detection unit that detects a temperature of the indoor air, and an indoor air Indoor humidity detecting means for detecting the humidity of the room, indoor air conditioning load detecting means for detecting the air conditioning load in the room, the outside air state obtained from the temperature and humidity of the outside air, and the indoor air state obtained from the temperature and humidity of the indoor air The indoor air-conditioning load obtained by the indoor air-conditioning load detecting means, the target indoor air state obtained from the target indoor air temperature and the target indoor air humidity, the outside air state, the indoor air state, the indoor air-conditioning load, and the target indoor air state. An operation setting means for setting the amount of outside air introduced into the room based on the outside air and the amount of change in temperature and humidity between the intake air and the blown air in the indoor heat exchanger, based on
Outside air amount control means for controlling the operation of the outside air introduction means so as to attain the outside air introduction amount set by the operation operation setting means, and a change in temperature and humidity between the intake air and the blown air set by the operation operation setting means. By providing the driving operation control means for controlling the driving operation of the heat transport means to obtain
The outside air is introduced according to the outdoor air condition, and the air can be effectively used to perform air conditioning so as to obtain a comfortable indoor space.

Further, according to the present invention, the outside operation enthalpy obtained from the outside air temperature detected by the outside air temperature detection unit and the outside air humidity detected by the outside air humidity detection unit is determined by the operation setting unit.
By setting to introduce outside air when the indoor air temperature is smaller than the indoor air enthalpy required from the indoor air temperature detected by the indoor air temperature detection means and the indoor air humidity detected by the indoor air humidity detection means, the outdoor air condition The air conditioner can introduce air outside according to the air conditioner and use the air effectively to perform air conditioning so as to obtain a comfortable indoor space, and further achieve an energy saving device without wasteful work and energy saving.

Further, according to the present invention, when the temperature / humidity of the outside air is lower than the line connecting the indoor air temperature / humidity and the target indoor air temperature / humidity in the humid air chart, the driving operation setting means introduces the outside air. Mainly reduce the temperature of the indoor air and set it to reduce the humidity of the indoor air mainly by exchanging heat with the refrigerant in the indoor heat exchanger to introduce the outside air according to the outdoor air condition. By using this effectively, air conditioning can be performed so as to obtain a comfortable indoor space, and an air conditioner that can realize energy saving without performing unnecessary work can be obtained.

Further, according to the present invention, when the temperature and humidity of the outside air are lower than the line connecting the room air temperature and the target room temperature and humidity in the humid air chart, the outside air is introduced by the operation setting means. By mainly setting the humidity of the indoor air to be lowered and the temperature of the indoor air to be lowered mainly by heat exchange with the refrigerant in the indoor heat exchanger, the outside air is introduced according to the outdoor air condition. By effectively utilizing this, air conditioning can be performed so as to obtain a comfortable indoor space, and energy saving can be realized without performing unnecessary work.

Further, the present invention includes a heating means provided in the air flow path on the downstream side of the indoor heat exchanger for heating the air flowing out of the indoor heat exchanger. An air conditioner that can perform air conditioning so as to obtain a comfortable indoor space by introducing and effectively using outside air, and that can achieve energy saving without performing unnecessary work can be obtained.

Further, according to the present invention, the heating means heats the air by heat exchange with a heater or a refrigerant, so that outside air is introduced in accordance with the outdoor air condition and this is used effectively. Air conditioning can be performed to obtain a comfortable indoor space, and energy saving can be achieved without performing unnecessary work.

Further, according to the present invention, the outside air introduction means has at least an outside air introduction port opening / closing mechanism, and the outside air introduction opening / closing mechanism is opened / closed or the opening degree of the outside air introduction port opening / closing mechanism is adjusted, so that the outside air introduction means is controlled. The introduction amount is variable, so that the outside air can be introduced according to the outdoor air condition, and this can be used effectively to achieve air conditioning so that a comfortable indoor space can be obtained. Can be realized.

The present invention also provides a refrigeration cycle in which the heat transport means is connected to the compressor, the heat source side heat exchanger, the pressure reducing means, and the use side heat exchanger by a refrigerant pipe to circulate the refrigerant. Is constituted by the use-side heat exchanger and the cold or warm heat is transported to the indoor heat exchanger by the refrigerant flowing through the refrigerant pipe, or the indoor heat exchanger is different from the use-side heat exchanger in heat. By using an existing energy-efficient refrigeration cycle, it is possible to use the outdoor heat exchanger by having a circulation path configured to be configured with an exchanger and transporting cold or hot heat in the use-side heat exchanger to the another heat exchanger. In accordance with the air condition of the outside air, air conditioning can be performed so that a comfortable indoor space is obtained by effectively utilizing the outside air.

Further, according to the present invention, on the psychrometric chart, air having a temperature and humidity which varies between the temperature and humidity of the outside air and the temperature and humidity of the room air in accordance with the amount of introduced outside air is used as intake air, and as target air to be blown out. The air of the set temperature and humidity is used as the blow-off air, and the change of the temperature and humidity from the suction air to the blow-off air is used as the control vector. By setting the temperature and humidity of the suction air and the refrigerant temperature within the allowable range, the outside air can be introduced and used effectively according to the outdoor air condition, and when the outside air is actively used In controlling the air conditioner, a method of controlling the air conditioner that can perform air conditioning so as to obtain a comfortable indoor space by relating the air humidity together with the air temperature is obtained.

Further, the present invention provides a method for controlling the intake air such that the extension of the control vector reaches the temperature and humidity of the saturation line within a range limited from the allowable range of the refrigerant temperature, and the input of the air conditioner is minimized. By setting the temperature and humidity and the refrigerant temperature within an allowable range, outside air can be introduced and used effectively according to the outdoor air condition, and further energy saving can be realized.

Also, according to the present invention, by controlling the temperature and humidity of the intake air so as to control the amount of the outside air introduced so that the enthalpy of the intake air is equal to or less than the enthalpy of the indoor air, the outside air is controlled according to the outdoor air condition. Air conditioning can be performed so that a comfortable indoor space can be obtained by effectively introducing and using this, and energy saving can be realized without performing unnecessary work.

Further, according to the present invention, when the temperature and the humidity of the outside air are lower than the extension line of the change of the temperature and the humidity from the room air to the target air, the temperature of the intake air approaches the temperature of the target air. The outside air is introduced in accordance with the outdoor air condition by controlling the amount of outside air introduced so that the inclination of the control vector becomes large, and a comfortable indoor space is obtained by effectively utilizing the outside air. In this manner, air conditioning can be performed, and energy can be saved without performing unnecessary work.

Further, according to the present invention, when the temperature and the humidity of the outside air are lower than the extension line of the change of the temperature and the humidity from the room air to the target air, the humidity of the intake air approaches the humidity of the target air. By controlling the amount of outside air introduced so that the inclination of the control vector becomes small, the outside air is introduced according to the outdoor air condition, and this is used effectively to obtain a comfortable indoor space. In this manner, air conditioning can be performed, and energy can be saved without performing unnecessary work.

Further, according to the present invention, air having a temperature and humidity that varies between the temperature and humidity of the outside air and the temperature and humidity of the room air in accordance with the amount of outside air is set as the intake air and set as the target blown air on the humid air chart. When the change in temperature and humidity from the suction air to the blown air is outside the range of the saturation line temperature and humidity that is restricted from the allowable range of the refrigerant temperature when the air with the specified temperature and humidity is used as the blown air, the blown air When the air with the same level of humidity as the target value of humidity is blown air, the change in temperature and humidity from suction air to blown air is used as the control vector, and the extension of the control vector is limited from the allowable range of the refrigerant temperature. Set the temperature and humidity of the suction air and the refrigerant temperature within the allowable range to reach the temperature and humidity of the saturation line in the range, and heat the target air when the temperature of the blown air is lower than the temperature of the target blown air. By setting the heating amount to be the temperature, the outside air can be introduced and used effectively according to the outdoor air condition, and when controlling the air conditioner when the outside air is actively used, the air Air conditioning can be performed so as to obtain a comfortable indoor space by relating the air humidity with the temperature.

Further, the present invention provides a method for controlling the intake air so that the extension of the control vector reaches the temperature and humidity of the saturation line within a range limited from the allowable range of the refrigerant temperature, and the input of the air conditioner is minimized. By setting the temperature and humidity and the refrigerant temperature within the allowable range, outside air can be introduced and used effectively according to the outdoor air condition, and further energy saving can be realized.

Further, according to the present invention, the temperature of the intake air is changed between the temperature and the humidity of the outside air and the temperature and the humidity of the indoor air, or the temperature of the blown air is changed at the same level as the humidity of the target blown air. By setting the control vector so that the total amount of energy between the air conditioning capacity and the heating amount, which is the length of the control vector, becomes small, outside air can be introduced according to the outdoor air condition, and this can be used effectively. Energy savings can be achieved without complicated work.

Further, according to the present invention, the amount of outside air introduced is determined according to the region of outside air where the enthalpy of outside air is larger than the enthalpy of room air, and the region of outside air where the enthalpy of outside air is smaller than the enthalpy of room air. By setting, the outside air can be introduced and used effectively according to the outdoor air condition, and when controlling the air conditioner when the outside air is actively used, the air humidity is related with the air temperature. Air conditioning can be performed to obtain a comfortable indoor space, and control is easy.

Further, according to the present invention, the region where the temperature and humidity of the outside air is lower than the extension line of the change of the temperature and humidity from the room air to the target blown air, and the temperature and humidity of the outside air from the room air to the target blown air are changed. By setting the air conditioning capacity of the refrigeration cycle according to the area on the lower humidity side than the extension line of the temperature and humidity changes, the outside air is introduced according to the outdoor air condition and used effectively. Air conditioning can be performed so as to obtain a comfortable indoor space, and energy saving can be achieved without performing unnecessary work.

Further, according to the present invention, a region of the outside air in which the enthalpy of the outside air is larger than the enthalpy of the room air, the enthalpy of the outside air is smaller than the enthalpy of the room air, and the temperature and humidity of the outside air are changed from the room air to the target blowing air. An area that is on the lower temperature side than the extension line of the temperature and humidity change, the enthalpy of the outside air is smaller than the enthalpy of the room air, and the temperature and humidity of the outside air are from the extension line of the temperature and humidity change from the room air to the target blowing air. By setting the amount of outside air introduced, the air-conditioning capacity of the refrigeration cycle, and the refrigerant temperature in accordance with the three regions, that is, the region on the low-humidity side, the outside air is introduced according to the outdoor air condition, and this is effectively performed. Air conditioning can be performed so as to obtain a comfortable indoor space by using the air conditioner, and energy saving can be realized without performing unnecessary work.

Although the present invention has been described above in which reheating is performed using a heater or a heat exchanger of a refrigeration cycle as described above, the operation method described with reference to FIG. Is slightly reduced, for example, by about -2 ° C, so that dehumidification can be performed effectively. First, as a sensor,
Outside air temperature TOA and return air suction temperature TRA
Are actually measured. In order to obtain the enthalpy iOA at the temperature and humidity of the outside air, the humidity of the outside air is required, but this is calculated by an outside air humidity detecting means. For example, the average relative humidity can be stored in the microcomputer from the annual weather data frequency table. To further improve the accuracy of the humidity value, φOA = φ (TOA) may be set as the outside air humidity using the temperature and humidity data of the standard weather data. That is, the temperature and humidity of the outside air are obtained by using the value obtained by changing the average value of the outside air humidity according to the detected outside air temperature as the outside air humidity, and the enthalpy of the outside air iOA = f (TOA, φO
A) can be calculated.

Next, the humidity of the suction air is set to a target humidity, for example, 60% relative humidity. Detected suction temperature T
The temperature and humidity of the suction air are calculated by calculating the RA and the target humidity by the detected humidity of the suction air, and the enthalpy of the suction air iRA = f (TRA, 60%) can be calculated. As described above, the outside air temperature sensor, the suction air temperature sensor, the outside air humidity calculation means, the suction air humidity calculation means,
Each enthalpy is calculated by the suction air enthalpy calculation means, and a signal for operating the ventilation fan when this condition is satisfied is issued by the determination means of iRA-iOA <α described with reference to FIG. As a result, only by using a simple detection sensor, the target temperature and the target humidity are set, the enthalpy is calculated from the temperature and the humidity of the outside air and the intake air, and the control means for controlling the air conditioning means and the ventilation means by the enthalpy is used. When the air conditioner is operated to the set temperature and reaches the target temperature, FIG.
As described in 9, the dehumidification can be performed based on the temperature and humidity data. In addition, effective dehumidification using outside air can be performed together, and air conditioning of temperature and humidity can be performed with less energy using an air conditioner and a ventilation fan. And can be performed efficiently with simple control.

[0133]

As described above, according to the first aspect of the present invention, an indoor room having a suction port and a discharge port in a room, in which room air is drawn in from a suction port by a blower, and blown out from the discharge port to circulate. Air conditioning means for performing air conditioning by changing the temperature and humidity of air, an opening for introducing outside air from outside to the room or exhausting air from the room to the outside, and an opening / closing means for opening / closing this opening or a ventilation for adjusting the amount of ventilation. Ventilation means having adjustment means, outside air temperature detection means for detecting the temperature of the outside air introduced from the ventilation means, outside air humidity detection means for detecting the humidity of the outside air introduced from the ventilation means, and from the room to the air conditioning means Suction temperature detecting means for detecting the temperature of the air to be sucked, indoor heat exchanger temperature detecting means for detecting the indoor heat exchanger temperature of the air conditioning means, and the temperature of the air circulating in the room. The temperature detected from at least one of the indoor temperature detecting means and the outside air temperature detecting means, the outside air humidity detecting means, the suction temperature detecting means, and the indoor heat exchanger temperature detecting means and / or the indoor temperature detecting means, Control means for controlling the air conditioning means and the ventilation means according to the humidity, so that the temperature of the indoor air is brought close to the target temperature, so that the outside air can be used effectively and energy during operation is reduced. An air conditioner is obtained.

According to the second aspect of the present invention, there is provided a suction port and a discharge port in the room, and the temperature and the temperature of the room air which sucks room air from the suction port, blows out from the discharge port, and circulates the air by a blower. Air conditioning means for performing air conditioning by changing humidity, an opening for introducing outside air from outside to the room or exhausting air from the room to the outside, and an opening / closing means for opening / closing this opening or a ventilation adjusting means for adjusting the amount of ventilation. Ventilation means, outside air temperature detection means for detecting the temperature of the outside air introduced from the ventilation means, outside air humidity detection means for detecting the humidity of the outside air introduced from the ventilation means, and temperature of the air taken into the air conditioning means from the room Temperature detection means for detecting air temperature, suction humidity detection means for detecting humidity of air sucked into the air conditioning means from the room, and temperature detection of air circulating in the room That the interior temperature detection means, and the indoor humidity detecting means for detecting the humidity of the air circulating in the chamber, the outside air temperature detection means, the outside air humidity detecting means, the suction temperature detecting means,
Suction humidity detection means, indoor temperature detection means, and control means for controlling the air conditioning means and ventilation means according to the temperature and humidity detected by the indoor humidity detection means, the temperature and humidity of the indoor air is a target temperature and Since it is made to approach the humidity, healthy air conditioning can be obtained with less energy by effectively utilizing the outside air.

According to the third aspect of the present invention, the control means associates the detected temperature and humidity of each air with each other.
Since the control is performed, an air conditioner that can efficiently control the temperature and the humidity simultaneously can be obtained.

According to the fourth aspect of the present invention, there is provided an indoor temperature detecting means for detecting the temperature of the air circulating in the room,
And at least one of the indoor humidity detecting means for detecting the humidity of the air circulating in the room detects at least one of the temperature and the humidity of the air circulating in the room near the outlet, so that reliable control is possible. A simple air conditioner can be obtained.

According to the fifth aspect of the present invention, there is provided an indoor temperature detecting means for detecting a temperature of air circulating in a room, and an indoor humidity detecting means for detecting humidity of air circulating in a room. , At least one of the temperature and the humidity of the air mixed with the air introduced from the ventilation means and the air blown out from the outlet is detected, so that an air conditioner capable of reliable control is obtained. .

According to the sixth aspect of the present invention, since a ventilation means capable of performing both ventilation from the outside to the room and exhaust from the room to the outside is provided, it is easy to maintain a favorable environment in the room. An air conditioner is obtained.

Further, according to the invention of claim 7, since the ventilation means is a ventilation fan capable of exchanging heat, an air conditioner which can further achieve energy saving can be obtained.

According to the eighth aspect of the present invention, the indoor air is circulated by the air conditioner which has a suction port and a discharge port in the room and in which the indoor air is sucked from the suction port by the blower and blown out from the discharge port. Changing the temperature and humidity in the room to perform air conditioning, and an opening for introducing outside air from outside to the room or exhausting air from the room to the outside, and an opening / closing means for opening / closing the opening or ventilation for passing through the opening. Ventilating between the outside and the room with ventilation means having ventilation adjusting means for adjusting the amount; temperature of outside air, humidity of outside air, temperature of air sucked from the room into the air conditioner, and air conditioning. Detecting the temperature of the indoor heat exchanger of the device or the temperature of the air circulating in the room;
The temperature and humidity are changed integrally so that the temperature and humidity of the indoor air are brought close to the target values of temperature and humidity by controlling the air conditioning means and the ventilation means based on the detected temperature and humidity. Can be used effectively,
An air conditioning method with less energy during operation can be obtained.

According to the ninth aspect of the present invention, the step of obtaining the enthalpy of the outside air and the enthalpy of the air sucked into the air conditioner from the room and comparing both enthalpies, and the step of transferring the enthalpy of the outside air from the room to the air conditioner When the air is lower than the enthalpy of the air to be sucked in, a step of introducing outside air into the room by the ventilation means and operating the refrigeration cycle under predetermined conditions is provided, so that an air conditioning method with less energy can be obtained by a simple method.

According to the tenth aspect of the present invention, the step of obtaining the enthalpy of the air circulating in the room and the enthalpy of the air sucked from the room into the air conditioner and obtaining the indoor load from both the enthalpies; Step of obtaining the temperature and humidity of the air circulating in the target room from the target values of the temperature and humidity of the indoor air and the temperature and humidity of the air sucked from the room into the air conditioner, and introducing the outside air into the room by the ventilation means And a step of operating the refrigeration cycle under predetermined conditions, so that an air-conditioning method capable of performing an effective energy-saving operation using outside air can be obtained.

According to the eleventh aspect of the present invention, the temperature and humidity of the air taken in by an air conditioner which has a suction port in the room and suctions room air from the suction port with a blower to perform air conditioning is detected. Detecting the temperature and humidity of air that is blown out from the air outlet of the air conditioner into the room and circulated into the room; detecting the temperature and humidity of the outside air that introduces outside air into the room from outside; Setting temperature and humidity, which are target values of the above, and air in which indoor air and outdoor air are directly sucked into the indoor heat exchanger to achieve the target value of indoor air and reduce the energy of the refrigeration cycle. And a step of setting a target value of the temperature and humidity of the air conditioner, so that an air conditioning method with high reliability and low energy can be obtained.

According to the twelfth aspect of the present invention, the temperature and humidity of the air taken in by an air conditioner which has a suction port in the room and inhales room air from the suction port with a blower to perform air conditioning is detected. Detecting the temperature, humidity, and air volume of the air blown out from the air outlet of the air conditioner into the room and circulating in the room, and detecting the temperature, humidity, and air volume of the outside air for introducing the outside air from the outside to the room Setting a temperature and humidity that are target values of indoor air;
Setting the target value of the temperature and humidity of the air blown directly from the indoor heat exchanger in order to achieve the target value of the indoor air and to reduce the energy of the refrigeration cycle. An air-conditioning method that does not use energy is obtained.

According to the thirteenth aspect, the evaporating temperature of the refrigeration cycle is set to a predetermined value, or
Setting the sensible heat ratio to a predetermined value and operating the air-conditioning apparatus, so that an air-conditioning method capable of surely controlling and achieving energy saving can be obtained.

According to the fourteenth aspect of the present invention, the difference in enthalpy between the temperature and the humidity of the air directly drawn into the indoor heat exchanger and the temperature and the humidity of the air directly blown from the indoor heat exchanger is small. Since the refrigeration cycle is operated as described above, an air conditioning method that can reliably achieve energy saving can be obtained. .

[0147] According to the fifteenth aspect of the present invention, the temperature and humidity of the indoor air, which has a suction port and a discharge port in the room and in which the indoor air is sucked from the suction port by the blower and blown out from the discharge port to be circulated, are controlled. An air conditioning means for performing air conditioning by changing the indoor heat exchanger, an opening for introducing outside air into the room from the outside or exhausting air from the room to the outside, and an opening / closing means for opening / closing the opening or a ventilation volume passing through the opening Ventilation means having ventilation adjusting means for adjusting the temperature, outside air temperature detection means for detecting the temperature of the outside air introduced from the ventilation means, outside air humidity detection means for detecting the humidity of the outside air introduced from the ventilation means, and air conditioning Means for detecting the temperature of the air taken into the room from the room, means for setting the indoor suction temperature for setting the target temperature of the indoor air, and means for detecting the humidity of the indoor air. Indoor suction humidity setting means for setting a target value, and control means for calculating the enthalpy from the temperature and humidity of the outside air and the sucked air and controlling the air conditioning means and the ventilation means with the calculated enthalpy, and Is brought close to the target temperature, so that an air conditioner that can achieve comfortable air conditioning and energy saving with a simple device can be obtained.

According to the sixteenth aspect of the present invention, the air conditioner has a suction port and a discharge port in the room, and the indoor air is sucked from the suction port by the rotation of the blower and blown out from the discharge port, thereby controlling the temperature and humidity of the room. Air conditioning means that performs operations such as cooling and heating by changing according to the capacity of the heat exchanger, and is connected to the air conditioning means to adjust the rotation of the blower and the capacity of the heat exchanger to set the indoor temperature and humidity to target values. Target value setting means for setting to approach at least one of the temperature and humidity, and a target value set by the target value setting means as a zone consisting of a plurality of bands, according to the operation state of the air conditioning means Since the zone width can be selected from a plurality of target value bands, comfortable indoor air conditioning can be obtained.

Further, according to the seventeenth aspect of the present invention, there is provided a suction port and a discharge port in the room, and the indoor air is sucked from the suction port by the rotation of the blower and blown out from the discharge port.
An air conditioning unit that performs operations such as cooling and heating by changing the temperature and humidity of the room according to the capacity of the heat exchanger, and an opening that allows ventilation between the room and the outside and a ventilation fan that performs this ventilation. Ventilation means for ventilation, connected to air conditioning means and ventilation means, adjust the rotation of the blower, the capacity of the heat exchanger and the rotation of the ventilation fan to bring the indoor temperature and humidity closer to the target values of temperature and humidity. Control means to control the air conditioning means or the ventilation means to be able to blow air to another place or another room via a duct from the air conditioning means or the ventilation means, and to control the temperature of the air blowing means and the ventilation means by the control means. Since humidity is controlled integrally, efficient air conditioning can be achieved in many places and rooms at the back.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a refrigerant circuit diagram illustrating a refrigeration cycle according to Embodiment 1 of the present invention.

FIG. 3 is an explanatory diagram showing a general psychrometric chart of the present invention.

FIG. 4 is an overall configuration diagram showing an air conditioner according to Embodiment 1 of the present invention.

FIG. 5 is an explanatory diagram showing a flow of air in a room according to the first embodiment of the present invention.

FIG. 6 is a block diagram showing a control flow according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a change in an air state in a psychrometric chart according to the first embodiment of the present invention.

FIG. 8 is an explanatory diagram related to Embodiment 1 of the present invention, illustrating zoning of an outside air utilization method based on an outside air state on a psychrometric chart.

FIG. 9 is a flowchart showing a procedure of zoning processing of an outside air utilization method based on an outside air state according to the first embodiment of the present invention.

FIG. 10 is a flowchart illustrating a processing procedure when the outside air state is a zone according to the first embodiment of the present invention.

FIG. 11 is a flowchart showing a processing procedure when the outside air state is a zone according to the first embodiment of the present invention.

FIG. 12 is an explanatory diagram illustrating a control vector on a psychrometric chart when the outside air state is a zone according to the first embodiment of the present invention.

FIG. 13 is an explanatory diagram illustrating a control vector on a psychrometric chart when the outside air state is a zone and a heater is used according to the first embodiment of the present invention.

FIG. 14 is a flowchart illustrating a processing procedure when the outside air state is a zone according to the first embodiment of the present invention.

FIG. 15 is an explanatory diagram illustrating a control vector on a psychrometric chart when the outside air state is a zone according to the first embodiment of the present invention.

FIG. 16 is an explanatory diagram illustrating control vectors on a psychrometric chart when the outside air state is a zone according to the first embodiment of the present invention.

FIG. 17 is an explanatory diagram illustrating a control vector on a psychrometric chart when the outside air state is a zone and a heater is used according to the first embodiment of the present invention.

FIG. 18 is an explanatory diagram of an outside air temperature and humidity distribution according to the first embodiment of the present invention.

FIG. 19 is an explanatory diagram illustrating a configuration near an indoor unit according to the air-conditioning apparatus according to Embodiment 2 of the present invention.

FIG. 20 is an explanatory diagram showing a flow of air in a room according to Embodiment 2 of the present invention.

FIG. 21 is an explanatory diagram showing a change in air state in a psychrometric chart according to the second embodiment of the present invention.

FIG. 22 is an explanatory diagram showing a change in an air state in a psychrometric chart according to the second embodiment of the present invention.

FIG. 23 is an explanatory diagram showing a change in an air state in a psychrometric chart according to the second embodiment of the present invention.

FIG. 24 is an explanatory diagram showing a change in air state in a psychrometric chart according to the second embodiment of the present invention.

FIG. 25 is an explanatory diagram showing a configuration near an indoor unit according to the air-conditioning apparatus according to Embodiment 2 of the present invention.

FIG. 26 is an explanatory diagram showing a configuration near an indoor unit according to the air-conditioning apparatus according to Embodiment 2 of the present invention.

FIG. 27 is an explanatory diagram showing a change in an air state in a psychrometric chart relating to the air-conditioning apparatus according to Embodiment 2 of the present invention.

FIG. 28 is a characteristic diagram with respect to an indoor heat exchanger temperature in the air-conditioning apparatus according to Embodiment 2 of the present invention.

FIG. 29 is an explanatory diagram showing a change in air state in a psychrometric chart relating to the air-conditioning apparatus according to Embodiment 2 of the present invention.

FIG. 30 is an explanatory diagram showing a configuration near an indoor unit according to the air-conditioning apparatus according to Embodiment 2 of the present invention.

FIG. 31 is an explanatory view showing an indoor arrangement according to the second embodiment of the present invention.

FIG. 32 is a configuration diagram showing a conventional air conditioner.

[Explanation of symbols]

Reference Signs List 1 indoor unit, 2 room, 3a, 3b indoor heat exchanger, 4 heating means, 5 indoor fan, 6 outdoor air introduction means, 7 refrigerant pipe, 8 outdoor unit, 9 indoor air temperature detection means as intake air, 10 Indoor air humidity detecting means as suction air, 11 Outside air temperature detecting means, 12
Outside air humidity detecting means, 13 outlet air temperature detecting means,
14 outlet air humidity detecting means, 20 ceiling, 21
Wall surface, 22 compressor, 23 flow path switching means, 25
Outdoor heat exchanger, 26, 26b pressure reducing means, 31 ventilation fan, 32 indoor control device, 33 outdoor control device, 34 outlet grill, 35 suction grill,
36 duct, 39 indoor filter, 40 outdoor filter, 41 outdoor fan, 46 ceiling embedded ventilation fan, 47 floor surface, 50 humidifier, 51 heater, 52 mixed air temperature detector, 53 mixed air humidity detector, 67 outside air introduction means Damper, 68
Indoor heat exchanger pipe temperature detecting means, 81 Indoor air conditioning load detecting means, 82 Operating operation setting means, 83 Outside air amount controlling means, 84 Operating operation controlling means.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L056 BD02 BD03 BE01 BE07 BF06 3L060 AA06 AA07 CC01 CC02 CC03 CC04 CC06 CC07 DD02 EE01 EE45

Claims (17)

[Claims] 1. An indoor heat exchanger which has a suction port and a discharge port in a room, and changes the temperature and humidity of room air which sucks room air from the suction port, blows out from the discharge port and circulates the air by a blower. Air conditioning means for performing air conditioning, an opening for introducing outside air into the room from the outside or exhausting air from the room to the outside, and an opening / closing means for opening / closing the opening or a ventilation adjusting means for adjusting the amount of air passing through the opening A ventilator having: an outside air temperature detector that detects the temperature of the outside air introduced from the ventilator; an outside air humidity detector that detects the humidity of the outside air introduced from the ventilator; Suction temperature detecting means for detecting the temperature of the air taken in from the air, indoor heat exchanger temperature detecting means for detecting the indoor heat exchanger temperature of the air conditioning means, and the room At least one of circulating air temperature detecting means for detecting the temperature of air circulating in the outside air temperature detecting means, the outside air humidity detecting means, the suction temperature detecting means, and the indoor heat exchanger temperature detecting means, and Control means for controlling the air conditioning means and the ventilation means based on the temperature and humidity detected from at least one of the circulating air temperature detection means, and the temperature of the indoor air approaches the target temperature. An air conditioner, characterized in that: 2. A room having a suction port and a discharge port, wherein the temperature and humidity of room air to be circulated by sucking room air from the suction port and blowing out from the discharge port with a blower are changed by a heat exchanger. Air conditioning means for conditioning, an opening for introducing outside air into the room from a fan and the outside or exhausting air from the room to the outside, and an opening / closing means for opening / closing the opening or a ventilation adjustment for adjusting the amount of air passing through the opening Ventilation means having a means, an outside air temperature detection means for detecting the temperature of the outside air introduced from the ventilation means, an outside air humidity detection means for detecting the humidity of the outside air introduced from the ventilation means, and the air conditioning means. Suction temperature detecting means for detecting the temperature of the air drawn in from the room, and suction humidity detecting means for detecting the humidity of the air drawn into the air conditioning means from the room Circulating air temperature detecting means for detecting the temperature of the air circulating in the room, circulating air humidity detecting means for detecting the humidity of the air circulating in the room,
The outside air temperature detecting means, the outside air humidity detecting means, the suction temperature detecting means, the suction humidity detecting means, the circulating air temperature detecting means, and the air conditioning means and the temperature and humidity detected by the circulating air humidity detecting means and Control means for controlling the ventilation means, wherein the temperature and humidity of the indoor air are made to approach the target values of temperature and humidity. 3. The air conditioner according to claim 1, wherein the control means controls the temperature and humidity of each detected air in association with each other. 4. A circulating air temperature detecting means for detecting a temperature of air circulating in a room, and a circulating air humidity detecting means for detecting a humidity of air circulating in a room, wherein at least one of the air conditioning means 4. The air conditioner according to claim 1, wherein at least one of temperature and humidity of air circulating in the room near the outlet is detected. 5. A circulating air temperature detecting means for detecting a temperature of air circulating in a room and a circulating air humidity detecting means for detecting a humidity of air circulating in a room are introduced from a ventilating means. 4. The air conditioner according to claim 1, wherein at least one of temperature and humidity of air mixed with air to be blown out and air blown out from the outlet is detected. 6. The at least one of claims 1 to 5, wherein the ventilating means includes a blowing means capable of ventilating from the outside to the room or exhausting from the room to the outside.
The air conditioner as described in the above. 7. The air conditioner according to claim 1, wherein the ventilation means has a heat exchange means capable of exchanging heat between an intake of outside air and an exhaust from the room. 8. An air conditioner having a suction port and a discharge port in a room, wherein the air is circulated by an air conditioner in which room air is sucked from the suction port by a blower and blown out from the discharge port to circulate room temperature and humidity. A step of performing air conditioning by changing, an opening for introducing outside air from outside to the room or exhausting air from the room to the outside, and an opening / closing means for opening / closing the opening or a ventilation adjusting means for adjusting the amount of ventilation passing through the opening; Ventilating between the outside and the room by the ventilation means having the temperature of the outside air, the humidity of the outside air, the temperature of the air sucked into the air conditioner from the room, and the indoor heat exchanger of the air conditioner. Detecting the temperature or the temperature of the air circulating in the room, and controlling the air conditioning means and the ventilating means based on the detected temperature and humidity. An air conditioning method characterized by integrally changing the temperature and the humidity so that the temperature and the humidity of the internal air approach the target values of the temperature and the humidity. 9. A step of determining the enthalpy of the outside air and the enthalpy of the air sucked from the room into the air conditioner, and comparing both the enthalpies with each other. If the enthalpy of the outside air is lower than the enthalpy of the air sucked into the air conditioner from the room, the ventilation means A step of introducing outside air into the room at the same time and operating the refrigeration cycle under predetermined conditions. 10. An enthalpy of air circulating in the room and an enthalpy of air sucked from the room into the air conditioner, and an indoor load is obtained from both enthalpies. The target values of the indoor load and the temperature and humidity of the indoor air are obtained. Obtaining the temperature and humidity of the air circulating in the target room from the temperature and humidity of the air sucked from the room into the air conditioner;
Introducing outside air into the room with ventilation means and operating the refrigeration cycle under predetermined conditions. 11. A step of detecting the temperature and humidity of the air taken in by an air conditioner having an air inlet in the room and performing air conditioning by sucking room air from the air inlet through a blower; Detecting the temperature and humidity of the air blown out from the outlet and circulating in the room; detecting the temperature and humidity of the outside air for introducing the outside air from outside to the room; and detecting the target temperature and humidity of the room air. Setting the target value of the indoor air, and setting the target value of the temperature and humidity of the air in which the indoor air and the outdoor air are directly mixed into the indoor heat exchanger to achieve the target value of the indoor air and reduce the energy of the refrigeration cycle. Performing the air conditioning. 12. A step of detecting the temperature and humidity of the air taken in by an air conditioner having an air inlet in the room and performing air conditioning by sucking room air from the air inlet through a blower; A step of detecting the temperature, humidity, and air volume of air blown out from the outlet and circulating in the room; a step of detecting the temperature, humidity, and air volume of outside air for introducing outside air from outside to the room; and a target value of room air. Setting the temperature and humidity, and setting the target value of the temperature and humidity of the air directly blown from the indoor heat exchanger to achieve the target value of the indoor air and reduce the energy of the refrigeration cycle. An air conditioning method, comprising: 13. The method according to claim 1, further comprising the step of: setting the evaporation temperature of the refrigeration cycle to a predetermined value or setting the sensible heat ratio to a predetermined value to operate the air conditioner. 13. The air conditioning method according to at least one of 8 to 12. 14. The refrigeration cycle is operated so that the difference in enthalpy between the temperature and humidity of air directly sucked into the indoor heat exchanger and the temperature and humidity of air directly blown out from the indoor heat exchanger is reduced. 13. The method according to claim 8, wherein:
The air conditioning method according to at least one of the above. 15. An indoor heat exchanger which has a suction port and a discharge port in a room, and changes the temperature and humidity of room air which sucks room air from the suction port, blows out from the discharge port and circulates the air by a blower. Air conditioning means for performing air conditioning, an opening for introducing outside air into the room from the outside or exhausting air from the room to the outside, and an opening / closing means for opening / closing the opening or a ventilation adjusting means for adjusting the amount of air passing through the opening A ventilator having: an outside air temperature detector that detects the temperature of the outside air introduced from the ventilator; an outside air humidity detector that detects the humidity of the outside air introduced from the ventilator; Suction temperature detection means for detecting the temperature of the air sucked from, and indoor suction temperature setting means for setting a target temperature of the indoor air,
Indoor suction humidity setting means for setting a humidity target value of indoor air, and control means for controlling the air conditioning means and the ventilation means by calculating the enthalpy from the temperature and humidity of the outside air and the suction air, and calculating the enthalpy,
An air conditioner comprising: bringing the temperature of room air closer to a target temperature. 16. A room having a suction port and a discharge port in a room, and by rotating a blower, air is sucked from the suction port and blown out from the discharge port, and the temperature and humidity in the room are changed by the capacity of the heat exchanger. Air conditioning means for performing operations such as cooling and heating, and connected to the air conditioning means, and adjusts the rotation of the blower and the capacity of the heat exchanger to adjust the indoor temperature and humidity to target values of temperature and humidity. A target value setting means for setting the target value to approach at least one of the target values, and a target value set by the target value setting means as a zone comprising a plurality of bands, and An air conditioner characterized in that a zone width can be selected from a plurality of bands. 17. A room having a suction port and a discharge port in a room, in which room air is sucked from the suction port and blown out from the discharge port by rotation of a blower, and the temperature and humidity in the room are changed by the capacity of the heat exchanger. Air conditioning means for performing operations such as cooling and heating, ventilation means for ventilating a room having an opening through which air can pass between the room and the outside, and a ventilation fan for ventilating the air; and the air conditioning means and the ventilation means Control means connected to the means, for controlling the rotation of the blower and the capacity of the heat exchanger and the rotation of the ventilation fan to control the temperature and humidity in the room to approach the target values of temperature and humidity, And air can be blown from the air conditioning means or the ventilation means to another place or another room via a duct, and the blowing means and the ventilation means are controlled by the control means. An air conditioner characterized by integrally controlling temperature and humidity in a step.