JPH05164381A - Multi-chamber system air-conditioner equipped with outside air intaking amount controller - Google Patents

Abstract

PURPOSE:To obtain an air-conditioner, capable of securing the amount of outside air necessary for all air-conditioned chambers in spite of the room temperatures or the ventilating amounts of respective air-conditioned chambers, in a multi- chamber air conditioning machine. CONSTITUTION:The ventilating amount of respective air-conditioned rooms are detected by a ventilating amount detecting means 20 and the ratio of outside air in respective air-conditioned rooms is obtained from the detected value and the amount of outside air necessary for respective air-conditioned rooms while the amount of necessitated outside air is determined by an outside air ratio determining means 21 based on the maximum ratio of outside air among the obtained ratios of atmosphere and the total amount of ventilation. The introduction of the outside air is controlled by an amount of outside air controller 22 based on the determined amount of atmosphere.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to a variable air volume type air conditioner having a ventilation control device.

[0002]

2. Description of the Related Art Generally, a variable air volume air conditioner, especially V
In the AV air conditioning system, the opening of the VAV unit becomes smaller as the room temperature of the air-conditioned room approaches the set value, and the amount of air supplied from the air conditioner to the air-conditioned room is reduced to secure the required outside air amount. It will not be done. Therefore, the required outside air amount in the air-conditioned room is not satisfied, and as a result, the indoor environment may be deteriorated. In order to solve this point, many proposals have been made in the past.

Conventionally, as this type of device, with respect to the return air returned to the air conditioner together with part of the exhaust air from the air-conditioned room and the outside air, the outside air amount (outside air intake amount) with respect to the return air. There is a device in which the air conditioner is controlled according to the blown air supply amount of the air conditioner (JP-A-2-29533) (hereinafter, simply referred to as Conventional Example 1).

Further, in an air conditioner that controls the room temperature by controlling the opening of the air volume control valve in the variable air volume unit according to the room temperature, the air is exhausted from the room. A CO ₂ concentration meter that measures the CO ₂ concentration of air, and the minimum opening value of the air volume control valve in the variable air volume unit is corrected by the CO ₂ concentration measurement value by the CO ₂ concentration meter (Japanese Patent Laid-Open No. 2- 233933 publication) (hereinafter, simply referred to as Conventional Example 2).

Further, even in one of the plurality of variable air supply amount adjusting means and the air-conditioned room, the load status is controlled according to the load status of each air-conditioned room. If the load condition exceeds the predetermined load reset deviation, the load reset means is provided to return the load condition that falls into the load reset deviation to the unsatisfied load condition by increasing the capacity of the air supply air temperature of the air conditioner. In the above device, the load condition returned to the load reset deviation is brought close to the load reset deviation while reducing the capacity of the blow-off air supply temperature, and the air supply to each air-conditioned room is performed by the variable air supply amount adjusting means. There is one that attempts to secure the return air amount by suppressing the decrease in the blowout amount (Japanese Patent Laid-Open No. 2-44141) (hereinafter, simply referred to as Conventional Example 3).

[0006]

In the prior art example 1, the outside air intake amount for the return air is changed according to the total blown air supply amount of the air conditioner. That is, when the total blown air supply amount of the air conditioner decreases, the outside air intake amount is increased to increase the ratio of the contained outside air, thereby compensating for the shortage of the absolute amount of outside air in the air-conditioned room. Therefore, a method for improving the environmental deterioration of the air-conditioned room has been proposed. However, Conventional Example 1 does not show how to determine the ratio of the contained outside air with respect to the total air supply amount of the air conditioner. That is, in a normal VAV air-conditioning system, there are a plurality of air-conditioned rooms, and even if the ratio of the contained outside air to the total air supply amount of the air conditioner is determined, the required outside air intake of all the air-conditioned rooms The quantity cannot be satisfied. Further, in Conventional Example 1, the ratio of the contained outside air to the total air supply amount of the air conditioner is determined, but the control of the outside air intake amount shown in the specification is merely performed by the outside air intake damper. It is practically impossible to control the outside air intake amount effectively only by adjusting the opening degree.

In Conventional Example 2, a CO ₂ concentration meter for measuring the CO ₂ concentration of the air exhausted from the room, and an air volume control valve (in the variable air volume unit) based on the CO ₂ concentration measurement value by the CO ₂ concentration meter ( A method for correcting the value of the minimum opening degree of the VAV damper) is presented. In this method, when the amount of air supplied from the air conditioner to the air-conditioned room is reduced and the required outside air volume is not secured, the air-conditioning is performed in order to minimize the decrease in the intake amount of the air-conditioned room. This is a method of increasing the lower limit of the amount of air supplied from the machine to the air-conditioned room. However, with this method, the controllability of the room temperature is completely lost.
Further, it is impossible to secure the required outside air amount by raising the lower limit of the air supply amount to some extent.

On the other hand, as is apparent from the above-mentioned conventional example 2, if the amount of air supplied from the air conditioner to the air-conditioned room is increased for the purpose of securing the amount of outside air, the room temperature of the air-conditioned room will increase. Control is often impossible. Many proposals have been made in this regard as well.

For example, in Conventional Example 3, one of a plurality of variable air supply amount adjusting means for controlling the amount of air supplied to each air-conditioned room according to the load condition of each air-conditioned room and one of the air-conditioned rooms. Even if the load condition falls into a dissatisfied state that exceeds a preset load reset deviation, the load condition is returned to within the load reset deviation by increasing the capacity of the air supply air temperature of the air conditioner. In a device provided with a reset means, the load condition returned within the load reset deviation is brought close to the load reset deviation while reducing the capacity of the blown air supply temperature, and the air-conditioned room is controlled by the variable air supply amount adjusting means. It aims to secure the return air volume by suppressing the decrease in the supply air volume to each unit.

That is, in the conventional example 3, the room temperature of the air-conditioned room approaches a set value, the amount of air supplied from the air conditioner to the air-conditioned room (= return air quantity) decreases, and the required outside air quantity is reduced. In order to prevent that the supply air temperature is not secured (for example, in heating, reduce the supply air temperature)
As a result, the air supply amount (= return air amount) to the air-conditioned room is to be secured. This method is a comparatively effective method that has been performed conventionally, but in reality, it lacks compensation to secure the supply air amount (= return air amount) to the air-conditioned room.

The present invention has been made in order to solve the above problems, and prevents the deterioration of the indoor environment by surely satisfying the required outside air amount of each air-conditioned room, and (EN) A method for promptly ventilating a deteriorated air-conditioned room, and further, for providing good control of the room temperature while surely satisfying the required outside air amount of each air-conditioned room. ..

[0012]

A multi-room air conditioner having an outside air quantity control device according to the first aspect of the present invention includes an air flow rate detecting means for detecting an air flow rate for each air conditioning room and each air conditioner. Outside air ratio determining means for determining an outside air ratio to the air flow rate that at least satisfies a predetermined required outside air amount for each air conditioning chamber, and outside air so that the outside air ratio determined by this outside air ratio determining means is realized. An outside air amount control means for controlling the intake amount and an outside air amount measuring means for measuring the outside air intake amount are provided.

Further, the multi-room air conditioner having the outside air quantity control device according to the second aspect of the present invention adjusts the blower control means for controlling the blower for blowing air to each room and the blown air quantity to each room. Damper control means for controlling the angle of the damper of the air flow rate adjusting unit, air volume measurement means for measuring the air flow rate from the blower, and pressure difference detection means for detecting the pressure difference between the outlet air pressure and the inlet air pressure of the blower. The output of the pressure difference detection means, the air flow rate measurement means, and the damper control means calculates the correlation between the air flow rate into each air-conditioned room, the opening / closing degree of the damper, and the difference in blowing pressure, and the ventilation resistance in each duct. And an air volume calculation means for calculating, and further calculating the heat load of each air-conditioned room from the difference between the set temperature of each air-conditioned room and the current room temperature,
The heat load detection means for instructing the air volume calculation means of the required air volume of each air conditioning chamber and the outside air ratio to the air flow rate that at least satisfy the predetermined outside air volume required for each air conditioning chamber are determined. The outside air ratio determining means, the outside air amount control means for controlling the outside air intake amount so that the outside air ratio determined by the outside air ratio determining means is realized, and the outside air amount measuring means for measuring the outside air intake amount are provided. It is a thing.

Further, in the multi-room air conditioner having the outside air amount control device according to the third aspect of the present invention, it is necessary that the air flow rate detecting means for each air conditioning chamber and that each air conditioning chamber is preset. An outside air ratio determining means for determining an outside air ratio with respect to the blown air amount that at least satisfies the outside air amount, and an outside air amount control means for controlling the outside air intake amount so that the outside air ratio determined by the outside air ratio determining means is realized. And an outside air amount measuring means for measuring an outside air intake amount, and a rapid ventilation control means for performing rapid ventilation in an air-conditioned room which has a particularly high ventilation demand.

Further, in the multi-room air conditioner having the outside air amount control device according to the fourth aspect of the present invention, it is necessary that the air flow amount detecting means of each air conditioning chamber and the air conditioning chamber be preset. An outside air ratio determining means for determining an outside air ratio with respect to the blown air amount that at least satisfies the outside air amount, and an outside air amount control means for controlling the outside air intake amount so that the outside air ratio determined by the outside air ratio determining means is realized. And an outside air amount measuring means for measuring the amount of intake of outside air, a rapid ventilation control means for performing rapid ventilation in an air-conditioned room with a particularly high ventilation requirement, and a contaminated air that is attached to the air-conditioned room to the outside. An exhaust damper for discharging and an exhaust damper opening / closing means for opening the exhaust damper in the air-conditioned room during rapid ventilation are provided.

Further, in the multi-room air conditioner having the outside air amount control device according to the fifth aspect of the present invention, the air flow rate detecting means of each air conditioning chamber and the air conditioning chamber must be predetermined for each air conditioning chamber. An outside air ratio determining means for determining an outside air ratio with respect to the blown air amount that at least satisfies the outside air amount, and an outside air amount control means for controlling the outside air intake amount so that the outside air ratio determined by the outside air ratio determining means is realized. And the outside air amount measuring means for measuring the outside air intake amount, and the heat source unit is controlled so that the room temperature does not overshoot while ventilating the air-conditioned room where the air conditioning load is satisfied, and the air conditioning load Heat supply control means for increasing the amount of blown air is provided for the air-conditioned room that has not been filled.

[0017]

In the multi-room air conditioner having the outside air amount control device according to the first aspect of the present invention, it is necessary to detect the amount of air blown for each air-conditioned room and set it in advance for each air-conditioned room. The outside air ratio to the blown air amount that at least satisfies the outside air amount is determined, and the outside air intake amount is set from the product of this outside air ratio and the sum of the blown air amount for each air conditioning chamber,
Finally, the outside air intake controller controls the outside air intake amount so that this outside air ratio is realized.

Further, in the multi-room air conditioner having the outside air amount control device according to the second aspect of the invention, the correlation between the air flow rate to each air conditioning chamber, the opening / closing degree of the damper, and the blast pressure difference is preliminarily set in the trial run. To calculate the ventilation resistance in each duct, and calculate the heat load of each air-conditioned room from the difference between the set temperature of each air-conditioned room and the current room temperature. Try to get the air volume. Next, from the required air flow rate for each air-conditioned room, determine the outside air ratio to the air flow rate that at least satisfies the predetermined required outside air amount for each air-conditioned room. The outside air intake amount is set from the product of the total amount of air blown for each air-conditioned room, and finally the outside air amount control device controls the outside air intake amount so that this outside air ratio is realized.

In the multi-room air conditioner having the outside air amount control device according to the third aspect of the present invention, it is necessary to detect the amount of air blown for each air-conditioned room and set it in advance for each air-conditioned room. The outside air ratio to the air flow rate that satisfies the outside air amount is determined, and the outside air intake amount is set from the product of this outside air ratio and the total air flow amount for each air conditioning room, and finally this outside air ratio. In order to realize the above, the outside air intake amount is controlled by the outside air amount control device, and further by the rapid ventilation control means,
Particularly when rapid ventilation is performed in an air-conditioned room with a high demand for ventilation, the amount of air blown into the air-conditioned room is increased and the outside air ratio is increased.

In the multi-room air conditioner having the outside air amount control device according to the fourth aspect of the present invention, it is necessary to detect the amount of air blown for each air-conditioned room and set it in advance for each air-conditioned room. The outside air ratio to the air flow rate that satisfies the outside air amount is determined, and the outside air intake amount is set from the product of this outside air ratio and the total air flow amount for each air conditioning room, and finally this outside air ratio. In order to realize the above, the outside air intake control device controls the outside air intake amount, and when performing rapid ventilation in an air conditioning room with a particularly high ventilation demand, the relevant air conditioning condition is provided by the rapid ventilation control means. The amount of air blown into the room is increased and the outside air ratio is increased, and the exhaust damper provided in the air-conditioned room is opened.

In the multi-room air conditioner having the outside air quantity control device according to the fifth aspect of the present invention, it is necessary to detect the amount of air blown for each air conditioning room and set it in advance for each air conditioning room. The outside air ratio to the air flow rate that satisfies the outside air amount is determined, and the outside air intake amount is set from the product of this outside air ratio and the total air flow amount for each air conditioning room, and finally this outside air ratio. The outside air intake control device controls the outside air intake amount so that Furthermore, in consideration of the existence of the air-conditioned room with a sufficient air conditioning load, the heat source unit is controlled so that the room temperature does not overshoot, and the amount of air blown to the air-conditioned room with an insufficient air conditioning load. Control to increase.

[0022]

【Example】

Embodiment 1 FIG. 1 is a block diagram showing the entire system of an air conditioner that is an embodiment of the present invention. In the figure, 1 is a plurality of air-conditioned rooms to be air-conditioned, and in this figure, there are three rooms. 2 is an indoor unit that is disposed in the ceiling of the air-conditioned room 1 or the like and functions as a blast source of cold air or warm air.
Is a heat exchanger for cooling or heating air, and 4 is a blower for blowing cold air or warm air. The indoor unit 2 includes a heat exchanger 3 and a blower 4. Reference numeral 5 is a main duct communicating with the air outlet of the indoor unit 2, 6 is a branch duct branched from the main duct 5 in accordance with the number of each air conditioning chamber 1, and 7 is installed in each branch duct 6 to receive air. A throttle type air blow adjusting unit for adjusting the amount of air blown to the harmony chamber 1, 8 a damper rotatably mounted in the throttle type air blow adjusting unit 7, and 9 an air outlet located at the end of the branch duct 6. 10,
Is a ceiling suction port arranged on the ceiling surface of the corridor outside the air-conditioned room 1. Reference numeral 11 denotes an air flow rate detector which is disposed in the branch duct 6 and detects the air flow rate to each air conditioning chamber 1.
Is a room thermostat for setting the room temperature and detecting the room temperature installed in each air-conditioned room 1, and 13 is a room thermostat for determining the air flow rate from the temperature difference output from the room thermostat 12, and the actual air flow rate detected by the air flow rate detector 11. The damper controller 14 controls the opening degree of the damper 8 based on the amount of the blown air, and 14 is a heat source device such as a heat pump that is connected to the heat exchanger 3 and controls the heat conversion operation in the heat exchanger 3.

Reference numeral 15 is an outside air introducing duct communicating from the outside to the indoor unit 2, 16 is a blower for blowing the outside air, and 17 is a throttle type mounted on the outside air introducing duct 15 for adjusting the amount of outside air introduced into the indoor unit 2. The blower adjusting unit, 18 is a damper rotatably mounted in the throttle type blower adjusting unit 17, and 19 is the blower amount detection which is arranged in the outside air introducing duct 15 and detects the amount of outside air introduced into the indoor unit 2. It is a vessel. In this air conditioner, depending on the difference between the room temperature and the set temperature in each air-conditioned room, when the difference is large, the amount of air blown to the air-conditioned room is large, and when the difference is small, the air The opening degree of the damper 8 is controlled so that the amount of air blown to the harmony chamber is reduced, and the heat source device 14 is controlled so that the supply air temperature blown to each air-conditioned chamber is substantially constant.

Next, introduction of outside air will be described. In FIG. 1, 20 is an air flow rate detecting means for detecting the actual air flow rate to each air conditioning chamber based on the detection signal of the air flow rate detector 11, and 21 is the air flow rate based on the output of the air flow rate detecting means 20. An outside air ratio determining means for determining the ratio of the outside air introduction amount and the outside air introduction amount derived from the ratio, and 22 is an outside air amount control means for controlling the outside air amount based on the outside air introduction amount determined by the outside air ratio determining means 21. is there. A blower adjusting unit 17 is connected to the outside air amount control means 22 and controls the outside air amount according to a signal from the outside air amount control means 22.
Reference numeral 23 is an outside air amount measuring means for measuring the actual outside air amount based on the detection signal of the air flow amount detector 19, and is determined by the outside air ratio determining means 21 based on the outside air amount measured by this outside air amount measuring means 23. The outside air amount control means 22 controls the amount of outside air so that the amount of introduced outside air is adjusted.

Here, an example of the function and operation of introducing the outside air in the air conditioner configured as described above will be described with reference to FIG. FIG. 2 is a flowchart showing the flow from the calculation of the air flow rate of each air-conditioned room to the control of the outside air quantity. Room thermostat 12 in step S1
The amount of air blown into each air-conditioned room is determined from the difference between the set temperature of each air-conditioned room and the actual room temperature detected from the above. In step S2, the air flow rate determined for each air conditioning chamber and the predetermined outside air amount to be supplied to the air conditioning chamber are included in the outside air ratio required by the air conditioning chamber, that is, the air blowing amount. Calculate the ratio of the outside air volume. In step S3, the maximum of the outside air ratios determined for each air conditioning room is selected. In step S4, the amount of outside air that should be included in the total amount of air blown is calculated by the product of the total amount of air blown, which is the sum of the amount of air blown in each air-conditioned room, and the maximum outside air ratio selected in step S3. Further, in step S5, the outside air amount control means 22 and the blower adjusting unit 17 control so that the amount of outside air introduced by the blower 16 becomes the amount of outside air calculated in step S4.

An example of the operation of steps S1 and S2 will be described with reference to FIG. FIG. 3 is a correlation diagram showing the relationship between the preset difference between the preset temperature and the room temperature, the air flow rate, and the outside air ratio. As shown in FIG. 3, when the difference between the set temperature and the room temperature is large, the air flow rate is large, and as the difference between the set temperature and the room temperature is small, the air flow rate is controlled to be small. Furthermore, by setting the set maximum air volume Q _MAX and the set minimum air volume Q _MIN to determine the maximum and minimum values of the air flow rate, the air flow rate does not exceed the set maximum air flow rate Q _MAX even if the temperature difference becomes large. Even if the difference becomes small, the air flow rate is controlled so as not to exceed the set minimum air flow rate Q _MIN . Here, even if the room temperature or the air flow rate changes, the air-conditioned room needs a certain amount of outside air (required outside air amount).

For example, the required outside air volume is the set maximum air volume Q.
_If it is 10 [%] of _MAX , the outside air ratio [%] of the blown air amount Q _i of each air-conditioned room is Q _MAX × 0.1 / Q _i × 100. Therefore, for example, if the set minimum air volume Q _MIN is half of the set maximum air volume Q _MAX , the outside air ratio in this case is 20%. In this way, the outside air ratio is determined based on the value of the air flow rate of each air conditioning chamber. That is, in other words, the outside air ratio corresponds to the air flow rate determined by the heat load of each air-conditioned room,
It will be required for each air-conditioned room. Furthermore, by selecting the largest of the outside air proportions,
At least in all the air-conditioned rooms, the required outside air volume is secured regardless of the room temperature and the air flow rate.

Since the ventilation function of the air conditioner configured as described above is only for introducing the outside air, the inside of the house becomes a positive pressure with respect to the outside world, and the polluted air is discharged to the outside such as doors and windows. It will be done through the gap. Further, in the present embodiment, the air conditioner having only the function of introducing the outside air is described, but the same applies to the air conditioner having the air supply / exhaust type ventilation device and the total heat exchange type ventilation device. The effect of can be obtained.

Embodiment 2 FIG. 4 is a block diagram showing the entire system of an air conditioner which is another embodiment of the present invention. In the figure, the same reference numerals as in the first embodiment represent the same contents. This embodiment is another embodiment relating to the air flow rate detecting means for detecting the air flow rate to each air conditioning chamber of the first embodiment, and the air flow rate to each air conditioning chamber is not direct but indirect. This is an application of Japanese Patent Application Laid-Open No. 3-177740 disclosed by the same applicant as the present case. Japanese Unexamined Patent Publication No. 3-177740 discloses, prior to trial operation, the blowing resistance of the ducts reaching each air-conditioned room by trial operation, and based on the data, rational air-blowing control and required air-blowing amount of each air-conditioned room are performed. It is one that tries to satisfy exactly.

In FIG. 4, reference numeral 24 is a blower amount detector which is arranged at the root of the main duct 5 and detects the amount of blown air from the blower 4, and 25 is a pressure difference between the outlet air pressure and the inlet air pressure of the blower 4. In the test operation mode, as shown in FIG. 3 of Japanese Patent Laid-Open No. 3-177740, the damper control means 26 changes the opening / closing degree of each damper 8 and fully closes the others in the test operation mode. The air flow rate of the blower 4 at this time is measured by the air flow rate detector 24 and the air flow rate measuring means 27, and the pressure difference between the outlet air and the inlet air of the blower 4 is measured by the pressure difference detector 25 and the pressure difference detecting means 28. taking measurement. Then, based on the opening / closing information of the damper 8 by the damper control means 26, the air volume information by the air volume measuring means 27, and the blast pressure difference information by the pressure difference detecting means 28, the air volume calculating means 29 calculates these relationships to form a table or a formula. Turn into.

This series of operations is performed for all damper systems, and in order to blow a predetermined amount of air to each branch duct 6, information on how to control the blowing pressure difference and the opening / closing degree of the damper 8 is sequentially accumulated. .. In the actual operation, the room temperature sensor 30 and the heat load detecting means 31 of each air conditioning room
Thus, the heat supply satisfaction status of each air-conditioned room is detected from the difference between the current room temperature and the set room temperature of each air-conditioned room, and the air volume calculation means 29 determines the required air volume of each air-conditioned room. After that, as shown in FIG. 4 of Japanese Patent Laid-Open No. 3-177740, in order to blow the required air volume to each branch duct 6 obtained in the trial operation mode, the air blowing pressure difference and the opening / closing degree of the damper 8 are required. The damper control means 26 sets / controls the opening angle of each damper 8 based on the information on how to control the damper 8. Further, the blower control means 32 includes the blower amount detector 24.
The rotation speed of the blower 4 is controlled so that the air flow rate measured by the air flow rate measuring means 27 and the sum of the required air flow rates for the respective branch ducts 6 become equal. As described above, according to this embodiment, it is possible to accurately and indirectly grasp the amount of air blown to each air conditioning chamber.

In this embodiment, the air flow rate detector 11 described in the first embodiment and the air flow rate detection means 20 for detecting the actual air flow rate to each air conditioning chamber based on the detection signal are not necessary, but other The configuration is similar to that of the first embodiment. That is, in this air conditioner, depending on the difference between the room temperature and the set temperature of each air-conditioned room, when the difference is large, the amount of air blown to the air-conditioned room is large, and when the difference is small, the The opening degree of the damper 8 is controlled so that the amount of air blown to the air-conditioned chambers is reduced, and the heat source unit 14 is controlled so that the supply air temperature blown to each air-conditioned chamber is substantially constant.

Next, introduction of outside air will be described. Reference numeral 21 is an outside air ratio determining means for determining the ratio of the outside air introduction amount to the blown air amount and the outside air introduction amount derived therefrom based on the output of the air flow calculating means 29, and 22 is based on the outside air introduction amount determined by the outside air ratio determining means 21. It is an outside air amount control means for controlling the outside air amount. A blower adjusting unit 17 is connected to the outside air amount control means 22 and controls the outside air amount according to a signal from the outside air amount control means 22. 23 is an air flow detector 1
9 is an outside air amount measuring means for measuring the actual outside air amount based on the detection signal of 9, and the outside air introduction amount determined by the outside air ratio determining means 21 based on the outside air amount measured by this outside air amount measuring means 23. Therefore, the outside air amount control means 22 controls the outside air amount. The subsequent operation / effect is exactly the same as that of the first embodiment.

Embodiment 3 FIG. 5 is a block diagram showing the entire system of an air conditioner which is another embodiment of the present invention. In the figure, the same reference numerals as in the first embodiment represent the same contents. In this embodiment, a rapid ventilation function is added to the first embodiment. That is, 33 is a rapid ventilation signal input means such as a switch or a gas concentration sensor provided in the air-conditioned room, and 34 is an outside air proportion determined in advance in the outside air proportion determining means 21 based on the ON output of the rapid ventilation signal input means. In addition to instructing the damper controller 13 to set the maximum ratio, the airflow rate to the air-conditioned room where the rapid ventilation signal input is turned on is set to the rated maximum value of the air-conditioned room. It is a ventilation control means.

Next, the operation of this embodiment will be described.
That is, by increasing the gas or dust concentration in a certain air-conditioned room, the occupant operates the switch,
Alternatively, when the rapid ventilation signal input means 33 is automatically turned on by a gas concentration sensor or the like, the rapid ventilation control means 34 causes the outside air ratio determining means 21 to open the outside air based on the ON output of the rapid ventilation signal input means. The damper controller is instructed to set the ratio to a predetermined maximum ratio, and the air blow rate to the air-conditioned room in which the rapid ventilation signal input is turned on is set to the rated maximum value of the air-conditioned room. Instruct to 13. Therefore, first, the amount of air blown to the air-conditioned room is
Increase to the rated maximum.

Further, the outside air ratio determining means 21 determines the outside air amount so that the outside air ratio becomes a predetermined maximum ratio on the basis of the air blowing amount information from the air blowing amount detecting means 20, and the outside air amount controlling means 22 makes the determination. The introduced outside air amount is controlled based on the outside air amount as in the first embodiment. Therefore, the amount of air blown into the air-conditioned room increases to the rated maximum value, and the outside air ratio becomes a predetermined maximum ratio. Ventilation operation is realized. At this time, the control of air blowing to the other air-conditioned room is performed based on a normal room temperature control routine, although the outside air ratio is maximized, so there is almost no effect on the room temperature.
As described above, according to the present embodiment, effective and quick ventilation is realized by maximizing the outside air introduction amount of the air-conditioned room requiring rapid ventilation, and the temperature fluctuation of other air-conditioned rooms It is possible to realize a rational rapid ventilation mode.

Embodiment 4 FIG. 6 is a block diagram showing the entire system of an air conditioner which is another embodiment of the present invention. In the figure, the same symbols as those in the first and third embodiments represent the same contents. In this embodiment, in order to further improve the rapid ventilation function of the third embodiment, an exhaust damper is added to the air-conditioned room.
That is, 35 is an exhaust damper provided on the inner surface of the air-conditioned room so as to communicate with the outside, and 36 is an exhaust damper opening / closing means for controlling the opening / closing operation of the exhaust damper 35.

In this embodiment, the rapid ventilation signal input means 33 is automatically operated by an occupant operating a switch or automatically by a gas concentration sensor or the like due to an increase in gas or dust concentration in an air-conditioned room. When turned on, the rapid ventilation control means 34 instructs the outside air proportion determining means 21 to set the outside air proportion to a predetermined maximum proportion based on the ON output of the rapid ventilation signal input means 33, and the rapid ventilation control means 34 The damper controller 13 is instructed to set the amount of air blown to the air-conditioned room whose ventilation signal input is turned on to the rated maximum value of the air-conditioned room. At the same time, the rapid ventilation control means 34 causes the exhaust damper 35 of the air-conditioned room in which the rapid ventilation signal input means 33 is turned on.
The exhaust damper opening / closing means 36 is instructed to open. By these operations / controls, first, the amount of air blown to the air-conditioned room increases to the rated maximum value regardless of the room temperature.

Further, the outside air ratio determining means 21 determines the outside air amount so that the outside air ratio becomes a predetermined maximum ratio based on the air amount information from the air flow amount detecting means 20, and the outside air amount control means 22 makes the determination. The introduced outside air amount is controlled based on the outside air amount as in the first embodiment. Therefore, the amount of air blown into the air-conditioned room increases to the rated maximum value, and the outside air ratio becomes a predetermined maximum ratio, so that the amount of outside air introduced into the air-conditioned room becomes maximum. Further, at that time, since the exhaust damper 35 installed in the air-conditioned room is opened, most of the contaminated air such as gas or dust in the air-conditioned room is released to the outside through the exhaust damper 35. Since the ratio of returning to the return port 10 of the indoor unit 2 and recirculating is extremely small, the effective ventilation amount of the air-conditioned room is increased and the diffusion of polluted air to other air-conditioned rooms is minimized. ..

At this time, the blown air to the other air-conditioned room is controlled based on a normal room temperature control routine, although the outside air ratio is maximized, so there is almost no effect on the room temperature. As described above, according to the present embodiment, by maximizing the amount of outside air introduced into the air-conditioned chamber that requires rapid ventilation, and further by opening the exhaust damper provided on the inner surface of the air-conditioned chamber in communication with the outside world. In addition to realizing more effective and quicker ventilation operation, it also realizes an extremely rational rapid ventilation mode that minimizes temperature fluctuations in other air-conditioned rooms and the diffusion of contaminated air into other air-conditioned rooms. Is possible.

Embodiment 5 FIG. 7 is a block diagram showing the entire system of an air conditioner which is another embodiment of the present invention. In the figure, Examples 1 to 4
The same symbols as are used to represent the same contents. This example is the same as Example 1.
In order to satisfy the room temperature controllability of each air-conditioned room while securing the necessary amount of outside air introduced to each air-conditioned room, by adding the heat supply control function to each air-conditioned room to the ventilation control function of Is. That is, 37 obtains the difference between the current room temperature of each air-conditioned room and the set value, that is, heat supply satisfaction status information from each damper controller 13, and controls the heat source device 14 and each damper controller 13 based on the information. It is a heat supply control means. As described in the description of the first embodiment, normally, the heat source device 14 is controlled so that the outlet air temperature (supply air temperature) of the indoor unit 2 becomes substantially constant. In addition to the control, the heat supply control means 37 is installed to control the room temperature of each air-conditioned room to a set value while securing the required outside air introduction amount to each air-conditioned room.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. This flowchart is controlled following the flowchart described in FIG. 2 of the first embodiment. That is, when the outside air introduction control as described in the first embodiment is performed, the heat supply control means 37 is
The difference between the current room temperature of each air-conditioned room and the set value, that is, heat supply satisfaction status information is input from each damper controller 13 (step S6). Based on this information, the heat supply control means 37 determines the heat load satisfaction status of each air-conditioned room (step S7). Subsequently, in step S8, it is determined whether or not the room temperature of all the air-conditioned rooms has reached the set value (whether the heat supply of all the air-conditioned rooms is sufficient). That is, when the room temperature of all the air-conditioned rooms has reached the set value, the process branches to step S9 to stop the heat source device 14 and to perform the heat conversion operation in the heat exchanger 3 provided in the indoor unit 2. Stop. When the heat supply to all such air-conditioned rooms is sufficient, as described in the description of FIG. 3 of the first embodiment, the amount of air blown to each air-conditioned room is set to a predetermined value for each air-conditioned room. It is controlled to the set minimum air volume of the air conditioning room, and the outside air ratio is controlled to the maximum value.

Therefore, when step S9 is executed, the air conditioner 2 sets the set minimum air volume Q in each air-conditioned room.
Only the air is blown with a total air flow rate equal to the sum of _MIN , and the required outside air volume is secured in each air conditioning room. On the other hand, if it is determined in step S8 that the room temperatures of all the air-conditioned rooms have not reached the set values, step S10 is executed to determine whether the room temperatures of all the air-conditioned rooms have reached the set values. (Whether the heat supply to all the air-conditioned rooms is not sufficient) is determined. If it is determined in step S10 that the heat supply to all the air-conditioned rooms is not sufficient, the process returns to step S6. On the other hand, if it is determined that only a part of the air-conditioned room is supplying heat, step S
11 is executed, and a new blowout temperature of the indoor unit 2 is controlled.

An embodiment of the contents of step S11 will be described in detail below, taking the case of heating as an example. The control of the new blowout temperature is performed in order to minimize the deviation of the temperature of the air-conditioned room in which the heat supply is satisfied from the set value. As described above, normally, the heat source unit 14
Is controlled so that the outlet air temperature (air supply temperature) of the indoor unit 2 becomes substantially constant. The target temperature at that time is T _S ,
In this case, the new target value T _S ′ of the blowout temperature is set as follows, for example.

[0045]

[Equation 1]

Here, α: coefficient N: number of air-conditioned chambers satisfying heat supply T _iSET : set room temperature of each air-conditioned chamber satisfying heat supply T _i : heat supply satisfied The current room temperature of each air-conditioned room, as is clear from the above equation, the larger the number of air-conditioned rooms that have sufficient heat supply, the more settings will be made in the air-conditioned room that has sufficient heat supply. As the difference between the current room temperature and the room temperature is larger, the new target value T _S ′ of the blowout temperature is set to be lower than the target temperature T _S at the normal time. Therefore, the difference between the temperature and the set value of the air-conditioned room where the heat supply is sufficient is controlled to the minimum.

Needless to say, the above equation may be defined as the following equation based on the number of air-conditioned chambers that are sufficiently supplied with heat. T _S ′ = T _S −α · N In this case, as is clear from the above equation, the larger the number of air-conditioned chambers in which the heat supply is satisfied, the more the new target value T _S ′ of the outlet temperature is usually. The temperature is set lower than the target temperature T _S at that time. The heat supply control means 37 controls the heat source device 14 so that the outlet air temperature (air supply temperature) of the indoor unit 2 becomes these target temperatures. Although the method of setting the new target value T _S ′ of the blowout temperature described above is the case of heating,
It goes without saying that the same processing can be performed in the case of cooling.

Now, after step S11 is executed and the new blow-out temperature of the indoor unit 2 is controlled, in step S12, a new required air volume for each air-conditioned room where the heat supply is not sufficient is set.・ Controlled. This new required air volume Q _i is set as in the following equation during heating in correspondence with the new target temperature T _S ′ setting of the outlet air temperature (air supply temperature) of the indoor unit 2. Q _i ′ = Q _i + β × (T _S −T _S ′) Here, Q _i ′: Heat supply is not sufficient New required air volume of each air-conditioned room Q _i : Heat supply is not satisfied Normal required air volume β of each air-conditioned room: Coefficient T _S : Normal target temperature of outlet air temperature (air supply temperature) of indoor unit 2 T _S ′: Outlet air temperature (air supply temperature) of indoor unit 2 as is clear from the new target temperature above equation, the new required air volume is applied to each of the air conditioning chamber heat supply does not meet Q _{i ',} to the normal request airflow Q _i, the air temperature It is set so as to increase in accordance with the decrease in the target value. That is, step S
At 12, the heat supply control means 37 instructs the respective damper controllers 13 the new required air volume Q _i ′ of each air conditioning chamber obtained by the above method, and each air conditioning that does not satisfy the heat supply. Do not reduce the heat supply of the room. Each damper controller 13 controls each air flow adjusting unit 7 based on this instruction. The new required air volume Q _i given to each air-conditioned room where the heat supply described above is not sufficient
Although the setting method of ′ was for heating, similar processing can be performed for cooling. Settings in step S12 above
After the control routine is executed, the control proceeds to the first step S
Return to 6.

As described above, according to the present embodiment, the heat supply control function to each air conditioning chamber is added to the ventilation control function of the first embodiment, while the required outside air introduction amount is secured to each air conditioning chamber. The proper heat supply that matches the heat load of each air-conditioned room is realized by changing the blowout temperature and the amount of air blown to each air-conditioned room.

[0050]

According to the present invention, the indoor environment is prevented from deteriorating by surely satisfying the required outside air amount of each air-conditioned room, and the air-conditioned room in which the indoor environment is deteriorated is quickly ventilated. In addition, the indoor temperature can be controlled well after the required outside air amount of each air-conditioned room is surely satisfied.

According to the first aspect of the invention as described above, by detecting the air flow rate for each air-conditioned room, it is possible to satisfy at least the predetermined required outside air amount for each air-conditioned room. In order to at least satisfy the predetermined required outside air amount for each air-conditioned room by determining the outside air ratio to the blown air amount and controlling the outside air intake amount so as to satisfy the outside air ratio. It is possible to prevent the deterioration of the indoor environment.

According to the second aspect of the invention as described above, the ventilation resistance in each duct is calculated by performing a trial operation to calculate the correlation between the air volume to each air conditioning chamber, the opening / closing degree of the damper, and the blast pressure difference. However, in actual operation, the heat load of each air-conditioned room is detected from the difference between the set temperature of each air-conditioned room and the current room temperature, and each air-conditioned room is indicated by indicating the required air volume. The room temperature of the room is controlled, and the outside air ratio is determined so as to at least satisfy the required outside air amount predetermined for each air-conditioned room with respect to the required air volume, and the outside air ratio is satisfied so as to satisfy the outside air ratio. By controlling the intake amount so as to satisfy at least the required outside air amount set in advance for each air-conditioned room, the air-conditioned room does not need to detect the air flow in each air-conditioned room. The required outside air volume for each room It is possible to prevent deterioration of the indoor environment can be quite satisfactory.

According to the third aspect of the invention as described above, by detecting the air flow rate for each air-conditioned room, it is possible to satisfy at least the required outside air amount predetermined for each air-conditioned room. By determining the outside air ratio to the blown air amount and controlling the outside air intake amount so as to satisfy the outside air ratio, it is possible to control at least the required outside air amount predetermined for each air conditioning chamber. , In particular, for an air-conditioned room with a high demand for ventilation, the air flow rate is increased, and the ratio of the outside air to the air flow rate is increased to control so that rapid ventilation can be performed, thereby preventing deterioration of the indoor environment. It is possible to realize rapid ventilation in an air-conditioned room whose indoor environment has deteriorated.

In the fourth aspect of the invention as described above, the air flow rate for each air-conditioned room is detected to detect the air flow rate for each air-conditioned room so as to at least satisfy the predetermined outside air amount. By determining the outside air ratio to the air volume and controlling the outside air intake amount so as to satisfy the outside air ratio, it is possible to control at least the required outside air amount that is predetermined for each air conditioning chamber, and In particular, for an air-conditioned room with a high ventilation demand, the air flow rate is increased, and the ratio of the outside air to the air flow rate is increased to control so that rapid ventilation is possible, and to discharge contaminated air to the outside. Since the exhaust damper installed in the air-conditioned room is controlled to open, the deterioration of the indoor environment is prevented and the air-conditioned room with a deteriorated indoor environment can be swiftly released. Ventilation is carried out, further most of the contaminated air is to be discharged into the open air, the diffusion of contaminated air to other of the air conditioning chamber is minimized.

In the fifth aspect of the invention as described above, the air flow rate for each air-conditioned room is detected to detect the air flow rate for each air-conditioned room so as to at least satisfy the predetermined outside air quantity. By determining the outside air ratio to the air volume and controlling the outside air intake amount so as to satisfy the outside air ratio, it is possible to control at least the required outside air amount that is predetermined for each air conditioning chamber, and Ventilate the air-conditioned room where the air-conditioning load is satisfied, while controlling the heat source unit so that the room temperature does not overshoot, and adjust the air flow to the air-conditioned room where the air-conditioning load is not satisfied. Since the control is performed so as to increase, the deterioration of the indoor environment is prevented by ensuring that the required outside air amount of each air-conditioned room is satisfied, and the indoor temperature is controlled well. It can become.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an entire system of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an outside air amount control method according to the first embodiment of the present invention.

FIG. 3 is a correlation diagram showing the relationship between the air flow rate and the outside air ratio according to the first embodiment of this invention.

FIG. 4 is a configuration diagram showing an entire system of an air conditioner of a second embodiment of the present invention.

FIG. 5 is a configuration diagram showing an entire system of an air conditioner of a third embodiment of the present invention.

FIG. 6 is a configuration diagram showing an entire system of an air conditioner according to a fourth embodiment of the present invention.

FIG. 7 is a configuration diagram showing an entire system of an air conditioner of a fifth embodiment of the present invention.

FIG. 8 is a flowchart showing a control method for an air conditioner according to a fifth embodiment of the present invention.

[Explanation of symbols]

 2 Indoor unit 14 Heat source device 20 Blower amount detecting means 21 Outside air ratio determining means 22 Outside air amount controlling means 23 Outside air amount measuring means 26 Damper controlling means 27 Air volume measuring means 28 Pressure difference detecting means 29 Air volume calculating means 31 Thermal load detecting means 32 Blower Control means 34 Rapid ventilation control means 36 Exhaust damper opening / closing means 37 Heat supply control means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Yoshikawa 3-18-1, Oga, Shizuoka City Mitsubishi Electric Corporation Shizuoka Factory

Claims (5)

[Claims] 1. A heat source unit for performing a heating / cooling operation, an air conditioner having a variable function of the amount of blown air, and an air conditioner which receives supply of air from the air conditioner, depending on the load condition of the air-conditioned room. Variable air volume control means for controlling the air flow rate of the air conditioner, control means for controlling the air flow rate of the air conditioner according to the control status of the air flow rate by the variable air volume control means, and one of the exhaust air from the air conditioning chamber. In a multi-chamber air conditioner comprising return air means for returning the air to the air conditioner together with the outside air as return air, an air flow rate detecting means for detecting an air flow rate for each air-conditioned room, and The outside air ratio to the air flow rate is determined so as to at least satisfy the predetermined required outside air amount for each air-conditioned room, and the sum of the value and the air flow rate of each air-conditioned room detected by the air flow rate detection means is determined. Based on
The outside air ratio determining means for calculating the required outside air amount, the outside air amount measuring means for detecting the intake outside air amount, and the outside air amount control means for controlling the outside air intake amount to match the calculated value of the outside air ratio determining means. A multi-room air conditioner equipped with an outside air intake control device. 2. An amount of air blown to a plurality of air-conditioned chambers, which is connected to a heat source device for cooling and heating operation and which has been heat-exchanged by a heat exchanger for circulating a heat medium, through ducts and branch ducts. An air conditioner provided with a blower having a variable function, a return air unit for returning a part of exhaust gas from the air-conditioned room to return to the air conditioner together with outside air, and attached to the branch duct section The blower adjusting means that adjusts the amount of blown air to the plurality of air-conditioned rooms by opening and closing the damper, and the opening and closing of the damper of the blower adjusting means changes the opening and closing degree for each one in the trial operation mode and all others. Closed, in operation mode, damper control means for controlling the damper at an angle corresponding to the amount of air blown to each air-conditioned room, air volume measuring means for detecting the amount of air blown by the blower, and outlet of the blower in the trial operation mode Air pressure and inlet air Pressure difference detection means for detecting the pressure difference with the pressure and the blower pressure difference for the duct system, and the heat load of each air conditioning chamber from the set temperature of each air conditioning chamber and the current room temperature in the operating mode. Ventilation resistance in each duct is calculated by the output of the heat load detection means, the pressure difference detection means, the air flow rate measurement means, and the damper control means in the test operation mode, and each output is calculated from the output of the heat load detection means in the operation mode. The air volume calculation means for calculating the required air flow rate to the air conditioning room and the output of the air volume measuring means for detecting the actual air flow rate in the operation mode and the sum total of the required air flow rate to each air conditioning room are the same. A blower control means for controlling the blower,
The outside air ratio to the air flow rate is determined so as to satisfy the predetermined required outside air quantity for each air conditioning room, and the sum of the value and the air flow rate of each air conditioning room detected by the air flow rate detecting means is determined. Based on the above, the outside air ratio determining means for calculating the required outside air amount, the outside air amount measuring means for detecting the intake outside air amount, and the outside air amount control for controlling the outside air intake amount to match the calculated value of the outside air ratio determining means. A multi-room air conditioner provided with an outside air intake amount control device. 3. A multi-room air conditioner equipped with the outside air intake amount control device according to claim 1, wherein the amount of air blown to an air-conditioned room having a particularly high ventilation requirement is increased, and the outside air ratio is increased. A multi-room air conditioner having an outside air intake amount control device, characterized in that it comprises a rapid ventilation control means for instructing the determining means to increase the outside air ratio. 4. A multi-room air conditioner equipped with the outside air intake amount control device according to claim 1, wherein the room air is discharged to the outside in order to perform rapid ventilation. An exhaust damper attached to the room, an exhaust damper opening / closing means for opening the exhaust damper, an amount of air blown to the air-conditioned room at the time of rapid ventilation of the air-conditioned room with a particularly high ventilation requirement, and the outside air ratio An outside air intake amount control device, comprising: a rapid ventilation control means for instructing the determining means to increase the outside air ratio and for instructing the exhaust damper opening / closing means to open the exhaust damper. A multi-room air conditioner equipped with. 5. A multi-room air conditioner comprising the outside air intake amount control device according to claim 1, wherein the room to be air-conditioned does not overshoot while ventilating the air-conditioned room in which the air conditioning load is satisfied. And a heat supply control means for controlling the heat source device to increase the air flow rate of the air-conditioned room where the air conditioning load is not satisfied. Multi-room air conditioner.