JPH0792258B2 - Air conditioning system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention supplies temperature-controlled air whose temperature is controlled by an air conditioner to a plurality of air-conditioned spaces, and exhausts air from each air-conditioned space. An air blower that merges and returns to the air conditioner is provided, and in each of the air conditioning target spaces, the supply amount of the temperature adjustment air is adjusted so that the actual temperature detected by the detector becomes the target temperature set by the setter. The present invention relates to an air conditioning system provided with a variable air volume adjusting device.

[Conventional technology]

In this type of air conditioning system, conventionally, the adjustment temperature for temperature adjustment has always been kept constant.

In other words, in the conventional air conditioning system, each air conditioning target space is controlled by adjusting the supply amount of temperature air conditioning to each air conditioning target space by the air flow rate changing device according to the increase or decrease of the temperature control load of each air conditioning target space. The desired temperature control state will be maintained. Then, the adjusted temperature of the temperature adjustment by the air conditioner is determined on the premise that ventilation more than necessary amount can be performed even in the temperature adjustment when the temperature adjustment load is small. By the way, generally, according to the temperature control load of the plurality of air-conditioned spaces as a whole, the amount of air blown by the blower is adjusted to increase as the temperature control load increases.

[Problems to be Solved by the Invention]

In a conventional air conditioning system, the temperature adjustment load is eliminated only by adjusting the supply amount of temperature adjustment air to each air conditioning target space while maintaining the adjustment temperature of temperature adjustment constant regardless of fluctuations in the temperature adjustment load. Therefore, if the temperature control load is large, for example, at the start of operation, it may take a long time to adjust the air conditioning target space to the desired temperature control state, and furthermore, during heating, the air conditioning target space When the temperature control load is extremely large due to the large amount of heat radiated from the air conditioning system and the large amount of heat acquired in the air conditioning target space during cooling, the air conditioning target space may not be adjusted to the desired temperature control state. Therefore, improvement was desired.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an air conditioning system that can be quickly and accurately adjusted to a desired temperature control state even when the temperature control load of the air conditioning target space is large. There is a point to do.

[Means for Solving the Problems]

In the air conditioning system of the present invention, a blower that supplies temperature-controlled air whose temperature has been adjusted by an air conditioner to a plurality of air conditioning target spaces, and joins the exhaust air from each of the air conditioning target spaces and returns it to the air conditioner is provided. Each of the air-conditioned spaces is provided with a variable air volume device that adjusts the supply amount of the temperature adjustment air so that the actual temperature detected by the detector becomes the target temperature set by the setter. The characteristic configuration is that a temperature sensor is provided for detecting the temperature of the return temperature control returned to the air conditioner, and the detected temperature of the temperature sensor and the target in the setter of each of the air conditioning target spaces. A determination means for determining whether or not the overload is equal to or more than a set value based on the comparison with the average value of the temperature is provided, and the air conditioner control means for controlling the operation of the air conditioner is the determination result of the determination means. Is overloaded In that it is configured to modify the adjustment temperature of the temperature control air to the load eliminates the side than when not load.

[Work]

According to the above characteristic configuration, when the determination unit determines that the temperature adjustment load is overload, the adjustment temperature of the temperature adjustment by the air conditioner is changed to the load elimination side. As a result, the temperature control load of the air conditioning target space is eliminated by adjusting the amount of temperature control air supply to the air conditioning target space and adjusting the temperature of the temperature control air, and the air conditioning target space has a large temperature control load. Even in some cases, the desired temperature control state can be adjusted quickly and accurately.

Moreover, according to the present invention, since the temperature adjustment load is determined by comparing the temperature of the return temperature adjustment air with the average value of the target temperature of each air conditioning target space, the difference in the capacity of each air conditioning target space It is easy to know accurately whether the total temperature control load for all of the multiple air-conditioned spaces is overloaded, regardless of the conditions, etc. You can control the temperature.

That is, for example, the deviation between the actual temperature and the target temperature in each air-conditioning target space is added, and it is determined whether or not the temperature adjustment load is overloaded by comparing the calculated added value and the set value. However, in the case of this means, since the temperature control load is not discriminated while considering the difference in the capacity of each air conditioning target space, it is possible to accurately determine whether or not the total temperature control load is an overload. However, there is a disadvantage that an erroneous operation is likely to occur, for example, the adjusted temperature of the temperature adjustment is not changed to the load-relieving side as desired even though it is actually an overload.

〔The invention's effect〕

Therefore, even if the total temperature control load on multiple air-conditioning spaces is overloaded at the start of operation, etc., the temperature control load is adjusted by adjusting the supply amount of temperature air-conditioning space and adjusting the temperature. Can be quickly and accurately resolved, and moreover, by determining whether or not the total temperature control load is overload in consideration of the difference in the capacity of each air conditioning target space, a better temperature control can be achieved. Can be done.

〔Example〕

The air conditioning system shown in FIG. 1 executes temperature adjustment of a plurality of air conditioning target rooms (A) as air conditioning target spaces, and includes a heat pump type air conditioning unit (F) and this air conditioning unit (F). Temperature control for multiple air-conditioned rooms (A)
To the air conditioning duct (4A), a return duct (4B) that joins the exhaust gas from each air conditioning target room (A) and returns it to the air conditioning unit (F), and temperature control to each air conditioning target room (A) A variable air volume device (3) is provided to adjust the supply amount of air according to the temperature control load of the air-conditioned room (A).

The air conditioning unit (F) is a passage (D) for temperature regulation circulation located between the air supply duct (4A) and the return duct (4B).
And a passage (E) for outside air. An indoor heat exchanger (1A), an air supply fan (2A), an intake fan (2B), etc. are provided in the temperature-controlled circulation passage (D), and an outside air passage (E) is provided. , Outdoor heat exchanger (1B), outdoor air intake fan (2C), outdoor air discharge fan (2D)
Etc. are equipped. Further, a compressor (1C), an expansion valve, etc. are provided to configure the air conditioner (1), and
The air blower (2A) for circulating the temperature controller and the intake fan (2B) constitute a blower (2) for blowing the temperature controller.

The air volume changing device (3) adjusts the supply amount of temperature adjustment by adjusting the opening degree of the air passage, and each air conditioning target room (A)
With respect to, the supply air amount is adjusted so as to reduce the deviation between the actual temperature detected by the detector (5) and the target temperature set by the setting device (6).

Return temperature (TR) returned to the air conditioner (1)
A first temperature sensor (S1) for detecting the temperature, a second temperature sensor (S2) for detecting the temperature of temperature adjustment from the air conditioner (1), and an air conditioning target room (A) farthest from the air conditioner (1). ), A pressure sensor (S3) for detecting the static pressure of temperature adjustment in the air supply duct (4A) is provided at a location near
A controller (W) using a microcomputer is provided. To the controller (W), the detection information of each of the sensors (S1, S2, S3) and the target temperature information set by the setting device (6) of each air conditioning target room (A) are input, and the controller (W) ), The rotation speed control of the blower (2) and the temperature control capability control of the air conditioner (1) are executed.

The rotation speed control of the blower (2) by the controller (W) adjusts the rotation speed of the blower (2) by inverter control so that the detection value of the pressure sensor (S3) is maintained at a set value. Is configured.

The temperature control capacity control of the air conditioner (1) by the controller (W) is performed by detecting the temperature (TR) of the first temperature sensor (S1) and the target temperature in the setter (6) of each air conditioning target space (A). It is determined whether or not the overload is equal to or more than the set value (t) based on the comparison with the average value (TV) of (for example, when cooling,
It is determined whether the average value (TV) is 3 degrees higher than the detected temperature (TR)). If the determination result is overload, the adjustment temperature of the temperature adjustment is set to the load elimination side compared to the case without overload. In particular, when there is no overload, the inverter drive controls the compressor drive so that the temperature detected by the second temperature sensor (S2) becomes the set value (for example, 17 degrees). The number of rotations of the motor is adjusted, and in the case of overload, the number of rotations of the compressor driving motor is adjusted to the maximum number of rotations by inverter control so that the maximum capacity is obtained.

In this embodiment, the controller (W) is
A discriminating means (100) and an air conditioner control means (101) are configured.

Next, based on FIG. 2 and FIG. 3, the controller (W)
The control operation of is added.

When the operation is started, the compressor rotation speed and the blower rotation speed are set to the maximum rotation speed, and the operation is started.

After that, when a suitable time (several minutes) elapses, the control of the subroutine which is the original operation control is started.

The control of the subroutine includes a process of obtaining the average value (TV) of the target temperatures in the setters (6) of the respective air-conditioned spaces (A), the first temperature sensor (S1), and the second temperature sensor (S).
After executing the measurement process of reading the detection values of 2) and the pressure sensor (S3), it is determined whether or not there is an overload.

If it is overloaded, the compressor rotation speed is set to the maximum rotation speed, and the blower rotation speed is adjusted so that the detected value of the pressure sensor (S3) is maintained at the set value, and the operation is continued.

If there is no overload, the rotation speed of the compressor drive motor is adjusted so that the temperature detected by the second temperature sensor (S2) reaches the set value, and the detected value of the pressure sensor (S3) is maintained at the set value. Continue the operation while adjusting the blower rotation speed as described above.

[Another embodiment]

In carrying out the present invention, a variable air volume device (3) and an air conditioner (1)
The specific configuration of each unit, such as the configuration of, can be variously changed according to the use target.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by this entry.

[Brief description of drawings]

The drawings show an embodiment of an air-conditioning system according to the present invention.
The figure is a block diagram showing the control configuration, and FIGS. 2 and 3 are flowcharts showing the control operation. (1) ... air conditioner, (2) ... blower, (100) ... discrimination means, (101) ... air conditioning control means, (A) ... air conditioning target space.

Claims (1)

[Claims] 1. Air-conditioning by supplying temperature-controlled air whose temperature has been adjusted by an air conditioner (1) to a plurality of air-conditioning target spaces (A) and joining exhaust air from each of the air-conditioning target spaces (A). A blower (2) for returning to the device (1) is provided, and the actual temperature detected by the detector (5) is set to the target temperature set by the setter (6) in each of the air-conditioned spaces (A). An air conditioning system provided with a variable air amount device (3) for adjusting the supply amount of the temperature adjustment in order to improve the temperature (TR) of the return temperature adjustment returned to the air conditioner (1).
A temperature sensor (S1) for detecting the temperature is provided, and a detected temperature (TR) of the temperature sensor (S1) and an average value (TV) of target temperatures in the setters (6) of the respective air-conditioned spaces (A) ), An air conditioner control means (10) for controlling the operation of the air conditioner (1) is provided with a judging means (100) for judging whether the overload is equal to or more than a set value (t).
1) is an air conditioning system configured to change the adjustment temperature of the temperature adjustment to the load elimination side when the determination result of the determination means (100) is overload, as compared with the case where there is no overload.