JPH0420734A - Air conditioning system - Google Patents

Abstract

PURPOSE:To enable a fast and positive adjustment of desired temperature adjustment to be carried out by a method wherein it is determined whether or not the highest one of temperature adjustment loads of each of a plurality of air conditioned spaces is an over-loaded state larger than a set load. CONSTITUTION:During a heating operation, a sensing degree of opening V of a degree-opening sensor 7 or a deviation DELTAt between an actual temperature got by an air amount controller 3A and a target temperature is inputted to a controller 8. The controller 8 calculates information for adjusting an air blowing capability of an air blower 2 in response to the deviation DELTAt and an appropriate temperature T of a temperature adjusting device adjusted by an air conditioner 1 is calculated in reference to information of a detected degree of opening V. Air blowing capability of the air blower 2 is adjusted under an inverter control in response to a variation of an entire temperature adjustment load (an entire temperature adjustment load for an entire room 1) and then a non-required driving force of the air blower is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides an air blower that supplies temperature-controlled air whose temperature is adjusted by an air conditioner to a plurality of air-conditioned spaces, and a blower that supplies temperature-controlled air to a plurality of air-conditioned spaces. The present invention relates to an air conditioning system provided with a variable air volume device that adjusts the supply amount of the temperature-controlled air according to the temperature-controlled load of each air-conditioned space.

[Conventional technology]

Conventionally, in this type of air conditioning system, the temperature of the air conditioned by the air conditioner is always maintained constant.

In other words, in conventional air-conditioning systems, each air-conditioned space is controlled by adjusting the amount of temperature-conditioned air supplied to each air-conditioned space using a variable air volume device according to the increase or decrease in the temperature control load of each air-conditioned space. This will maintain the desired temperature control. The regulated temperature of the temperature-controlled air by the air conditioner is determined on the premise that even in temperature control when the temperature control load is small, ventilation in excess of the required amount can be performed. Incidentally, in general, the amount of air blown by an air blower is adjusted to increase as the heat load increases, depending on the temperature control load of the entire plurality of air-conditioned spaces.

[Problem to be solved by the invention]

In conventional air conditioning systems, the temperature control load is eliminated only by adjusting the supply amount of temperature control air to each air-conditioned space, while maintaining the controlled temperature of the temperature control air constant regardless of fluctuations in the temperature control load. Therefore, if the temperature control load is large in any or all of the multiple air-conditioned spaces, it may take a long time to adjust the air-conditioned space to the desired temperature condition, and the heating If the temperature control load is extremely large due to a large amount of heat dissipated from the air-conditioned space or a large amount of heat acquired into the air-conditioned space during cooling, it is necessary to bring the air-conditioned space to the desired temperature control state. (There was a possibility that the adjustment could not be made.) Improvements were desired.

The present invention has been made in view of the above circumstances, and its purpose is to provide an air conditioning system that can quickly and accurately adjust the temperature to a desired temperature even when the temperature control load of the space to be air-conditioned is large. It is in the point of doing.

[Means to solve the problem]

The air conditioning system of the present invention is provided with a blower that supplies temperature-controlled air whose temperature is adjusted by an air conditioner to a plurality of air-conditioned spaces, and in which each of the air-conditioned spaces is provided with a blower according to the temperature control load of each air-conditioned space. A variable air volume device is provided for adjusting the supply amount of the temperature-controlled air, and a first characteristic configuration thereof is that the temperature-controlled load is the largest among the temperature-controlled loads of each of the plurality of air-conditioned spaces. A determining means is provided for determining whether or not an overload is greater than a set load, and the air conditioner control means for controlling the operation of the air conditioner detects an overload when the determination result of the determining means is an overload. The present invention is configured to change the adjusted temperature of the temperature-controlled air to the side where the load is eliminated compared to when there is no load.

The second characteristic configuration described below specifies a preferable specific configuration when implementing the above-mentioned first characteristic configuration.

A second characteristic configuration is that the air conditioner control means is configured to change the adjusted temperature of the temperature-controlled air to a load canceling side as the load increases in the case of the overload.

[For production]

According to the first characteristic configuration, when the determination means determines the existence of an air-conditioned space where the temperature control load is overloaded, the adjusted temperature of the temperature-conditioned air by the air conditioner is changed to the side where the temperature control load is overloaded. Become. As a result, the temperature control load in the air-conditioned space is eliminated by adjusting the supply amount of temperature-conditioned air to the air-conditioned space and adjusting the temperature of the temperature-conditioned air, and the temperature control load in the air-conditioned space is large. In any case, the desired temperature can be adjusted quickly and accurately.

According to the second characteristic configuration, when the temperature control load of the air conditioned space is overloaded, the larger the temperature control load is, the adjusted temperature of the temperature controlled air is changed to the side where the load is eliminated. The space can be quickly and accurately adjusted to a desired temperature control state, and disadvantages such as overshoot can be avoided as much as possible in the temperature control of the temperature-controlled space.

In other words, if the temperature to be adjusted in the case of overload is set to a temperature that allows the air-conditioned space to be quickly and reliably adjusted to the desired temperature condition even when the temperature control load is quite large, the temperature control When the load is not so large, there is a disadvantage that overshoot is likely to occur in the temperature control of the space to be air-conditioned, but this can be avoided.

〔Effect of the invention〕

According to the first characteristic configuration, even when the temperature conditioning section of the air-conditioned space is overloaded, the supply amount of temperature-controlled air to the air-conditioned space and the temperature of the temperature-controlled air are adjusted quickly and accurately. Therefore, the space to be air-conditioned can be appropriately adjusted to a desired temperature-controlled state regardless of the size of the temperature-controlled load.

Moreover, according to the present invention, if the temperature control load becomes overload in one of the plurality of air-conditioned spaces, the adjusted temperature of the temperature-controlled air is changed to relieve the load. Compared to changing the adjusted temperature of the temperature-controlled air while determining whether the sum of the adjusted temperatures of all the air-conditioned spaces is overloaded, the temperature control capacity of all the air-conditioned spaces is It is possible to ensure that there is no shortage of

According to the second characteristic configuration, not only can the air-conditioned space be quickly and accurately adjusted to the desired temperature-controlled state, but also it is possible to avoid disadvantages such as overshoot as much as possible in temperature-conditioning the air-conditioned space. Since then, it has become possible to perform better air conditioning.

〔Example〕

The air conditioning system shown in Fig. 2 adjusts the temperature of a plurality of air-conditioned rooms (A) as spaces to be air-conditioned, and includes a heat pump type air-conditioning unit) (F) and this air-conditioning unit) (F). ) A supply air duct (4A) that guides temperature-controlled air from ) to multiple air-conditioned rooms (A), and a return duct (4B) that guides exhaust air from each air-conditioned room (A) to the air conditioning unit) (F). A variable air volume device (3) is provided that adjusts the amount of temperature-controlled air supplied to each air-conditioned room (A) according to the temperature-controlled load of the air-conditioned room (A).

The air conditioning unit (F) includes a temperature-controlled air circulation passage (D) located between the supply air duct (4A) and the return duct (4B), and an outside air passage (E). There is. The temperature-controlled air circulation passage (D) is equipped with an indoor heat exchanger (IA), an air supply fan (2A), an intake fan (2B), etc., and the outside air passage (E) is equipped with an indoor heat exchanger (IA), an air supply fan (2A), an intake fan (2B), etc. , outdoor heat exchanger (IB), intake fan for introducing outside air (20)
, an air fan (2D) for exhausting outside air, etc. are installed. In addition, a compressor (IC), an expansion valve, etc. are also provided to configure the air conditioner (1), and an air supply fan (2A) for circulating the temperature controller and an intake fan (2B) are used to provide temperature-controlled air. A blower (2) for blowing air is configured.

The variable air volume device (3) adjusts the amount of temperature-controlled air supplied by adjusting the opening of the air passage, and further includes an air volume controller (3A) as shown in FIG. This air volume controller automatically adjusts the amount of air supplied. The air volume controller (3A) is
For each air-conditioned room (A), the air supply amount is set so as to reduce the positive and negative deviation (△t) between the actual temperature detected by the detector (5) and the target temperature set by the setting device (6). Adjust.

In other words, each variable air volume device (3), in the case of cooling operation,
As shown in Figure 5, the deviation (△t) is a positive set value (∆t
a) When the deviation (△t) becomes the negative set value (△
The air passage opening degree is gradually increased at a predetermined speed until the deviation (△t) becomes equal to or less than the negative set value (△t
b) When Ja falls below, the deviation (△t) becomes the next positive set value (
The air passage opening degree is gradually decreased at a predetermined speed until it reaches Δta) or more.

In addition, in the case of heating operation, it is configured to operate in the opposite manner to the above.

As shown in FIG. 1, an opening detection sensor (7) for detecting the opening of the air passage of each of the variable air volume devices (3) is provided, as well as a controller (8) using a microcomputer. The controller (8) records the opening degree (V) detected by the opening detection sensor (7) and the deviation (△) between the actual temperature and the target temperature determined by the air volume controller (3A).
t) is input. The controller (8) adjusts the air blowing capacity of the blower (2) by converting the information of t into the deviation (△
t) and the appropriate temperature (T) of the temperature controller adjusted by the air conditioner (1) is determined from the information on the detected opening degree (V).

To explain, the air blowing capacity of the air blower (2) is adjusted by inverter control according to fluctuations in the overall temperature control load (temperature control load as a whole for all rooms (1)),
This is to avoid unnecessary consumption of blower drive power. Therefore, each room (1) is controlled by a controller (8).
The sum (ΣΔt) of positive and negative deviations (Δt) is calculated,
Furthermore, the calculated value (Σ△t) and the set equilibrium value (S)
(5=0 in this example) and the difference value (ΔS=EΔt
-3) is required. Then, the blower drive motor (2
A regulator (10) that gives an adjustment command to the inverter circuit (9) of m) gives an adjustment command based on the difference value (ΔS). In other words, this regulator (10) has the above difference value (△S
) is configured to give an adjustment command to the inverter circuit (9) in a state in which the speed of changing the air blowing capacity is increased as the difference value (ΔS) is larger; The adjusted temperature (T) of the temperature-controlled air by the air conditioner (1)
) is changed to the load cancellation side when the largest temperature control load among the temperature control loads of each of the plurality of air conditioned rooms (A) becomes an overload that is larger than the set load, and in the case of overload, the above-mentioned The temperature control capability of the air conditioner (1) is adjusted by inverter control in order to change the adjusted temperature of the temperature-controlled air toward the load-relieving side as the temperature-controlled load increases.

At that time, the controller (8) uses the opening degree (V) of each of the variable air volume devices (3) as information indicating the temperature control load of each air-conditioned room (A). (A) Based on the opening degree (V) of each variable air volume device (3), overload where the largest temperature control load among the temperature control loads of each air conditioned room (A) is greater than the set load. If the result of the determination is overload, the adjusted temperature (T) of the temperature-controlled air is changed to the load-relieving side compared to the case where there is no overload, and the temperature-controlled air is In the adjustment, as the load increases, the adjusted temperature (T) of the temperature-controlled air is changed to the side where the load is eliminated. In other words, in the case of air conditioning, the third
As shown in the figure, the opening degree (
V) If the largest opening (Vmax) is less than the set opening (for example, 50%), the adjusted temperature (
T) is maintained at the set temperature (for example, 15 degrees), and the opening degree (V) of the plurality of variable air volume devices (3).If the largest opening degree (ν"max) among them exceeds the set opening degree, , the more the temperature control temperature (T) is lowered to the lowest temperature (for example 1
2 degrees). The detected temperature (Tg) of the temperature sensor (11) that detects the temperature of the temperature-controlled air in the supply air duct (4A) and the adjusted temperature (Tg)
) is determined by the comparator (12), and the inverter circuit (13
), the regulator (I4) gives an adjustment command to the deviation (△
Give adjustment commands based on T). In other words, this regulator (
10), as shown in FIG. 4, when the deviation (Δt) exceeds the positive set value (ΔTa), the compressor (I
C) is adjusted to its maximum capacity, and when the deviation (ΔT) becomes less than the negative set value (ΔTb), the compressor (I
C) is adjusted so that it has the lowest capacity, and the deviation (△
When t) is between the positive set value (ΔTa) and the negative set value (ΔTb), the adjustment is made so that the more positive the deviation (Δt), the greater the capacity of the compressor (1C).

In this embodiment, the controller (8) constitutes a determining means, and the air conditioning control means (t~) comprises the controller (8), the comparator (12), and the regulator (14) as main parts. configured.

Sleep Embodiment] In carrying out the present invention, the specific configuration of each part, such as the means for detecting the temperature control load and the configuration of the air sensor (1), can be changed in various ways depending on the intended use.

Incidentally, although reference numerals are provided in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the air conditioning system according to the present invention.
The figure is a block diagram showing the control configuration, FIG. 2 is a general schematic diagram of the air conditioning system, and FIGS. 3 to 5 are graphs showing control operations. (1)...Air conditioner, (2)...Blower, (8)...Discrimination means, (A>...Air conditioned space, ( W)..., air conditioning control means.

Claims (1)

[Scope of Claims] 1. A blower (2) is provided that supplies temperature-controlled air to a plurality of air-conditioned spaces (A), the temperature of which has been adjusted by the air conditioner (1), and ) An air conditioning system in which each of the plurality of air-conditioned spaces (A) is provided with a variable air volume device (3) that adjusts the supply amount of the temperature-controlled air according to the temperature-controlled load of each of the air-conditioned spaces (A). (A) Discrimination means (8) is provided for determining whether or not the largest temperature control load among the respective temperature control loads is an overload that is larger than the set load, and the determination means (8) is configured to control the operation of the air conditioner (1). Air conditioner control means (W
), the air conditioning system is configured to change the adjusted temperature of the temperature-controlled air to a side that eliminates the load when the determination result of the determining means (8) is overload than when there is no overload. 2. The air conditioning system according to claim 1, wherein the air conditioner control means (W) is configured to change the adjusted temperature of the temperature-controlled air to a load canceling side as the load increases in the case of the overload. .