JP2548823B2 - Air conditioning system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air conditioning system, and more specifically, a fan for supplying temperature-controlled air whose temperature has been adjusted by an air conditioner to a plurality of air-conditioned rooms is provided. In each of the, the air flow rate unit that changes the supply amount of temperature adjustment to the corresponding air-conditioned room by adjusting the air passage opening according to the difference between the target temperature and the detected temperature of the air-conditioned room, As a supply air temperature control means for changing the temperature of the temperature-controlled air supplied to each of the air-conditioned rooms according to the air-conditioning load, the specified sound of temperature-controlled air and the detected temperature so that the temperature of the temperature-controlled air becomes the specified temperature. The present invention relates to an air conditioning system provided with an air supply temperature adjusting means for adjusting the temperature adjusting ability of the air conditioner according to the deviation between the air conditioner and an air supply temperature specifying means for changing the specified temperature of the temperature adjustment according to the air conditioning load.

[Conventional technology]

Conventionally, the target temperature Trp of the air conditioning target room is the target temperature Trp of the air conditioning target room as the air temperature control means for changing the temperature of the temperature adjustment (so-called air supply temperature Ts) supplied from the air conditioner to the air conditioning target room according to the air conditioning load of the air conditioning target room. The temperature control temperature Ts is changed according to the deviation ΔTr (room temperature deviation) from the detected temperature Tr, or the opening of the temperature control supply air passage to this air conditioning target room is changed to the room temperature deviation of that air conditioning target room. When providing a variable air volume unit (so-called VAV unit) that adjusts according to ΔTr, a type has been proposed in which the temperature Ts of temperature adjustment is changed according to the air passage opening adjustment state of this variable air volume unit. (For example, Japanese Patent Application No. 1-21
No. 2511).

That is, in the basic configuration in which the temperature control capacity of the air conditioner is adjusted by the air temperature adjusting means so that the temperature Ts of the temperature adjustment becomes the specified temperature Tsp, the specified temperature Tsp of the temperature adjustment is set to the above room temperature deviation ΔTr. Alternatively, the air temperature specification means changes the designation according to the air passage opening adjustment state of the variable air volume unit.

Further, there are a plurality of air-conditioning target rooms, and the supply amount of temperature-controlled air (the so-called air supply amount v) to the air-conditioning target unit, that is, the corresponding air-conditioning target room, is referred to as the room temperature deviation Δ of the air-conditioning target room.
In an air conditioning system in which a variable air volume unit that is changed by adjusting the air passage opening according to Tr is provided in each of these multiple air conditioning target rooms, the room temperature deviation ΔTr is different for each air conditioning target room, and The adjustment state of the air passage opening in each room also differs depending on the room to be air-conditioned, and simply changes the room temperature deviation ΔTr as described above and the temperature adjustment temperature Ts according to the air passage opening adjustment state of the variable air volume unit. Because it is not possible,
As can be seen in Japanese Laid-Open Patent Publication No. 62-66043, among a plurality of air-conditioning target rooms, depending on the room-temperature deviation (maximum deviation) of the target room having the largest room-temperature deviation ΔTr, or among the plurality of air-conditioning target rooms. , Temperature control air temperature Ts in accordance with the room temperature (maximum room temperature) of the air-conditioned room where the room temperature is the highest in cooling, and the room temperature (minimum room temperature) of the air-conditioned room where the room temperature is the lowest in heating. There are some that have been changed.

That is, so that the temperature Ts of temperature adjustment is the specified temperature Tsp, in the basic configuration for adjusting the temperature adjustment capacity of the air conditioner by the air temperature adjusting means, the specified temperature Tsp of this temperature adjustment, the maximum deviation, Alternatively, the designation may be changed by the supply air temperature designation means according to the maximum room temperature or the minimum room temperature.

Incidentally, in the above-mentioned Japanese Patent Laid-Open No. 62-66043, the capacity F of the fan for supplying the temperature-controlled air to the plurality of air-conditioned chambers is, together with the temperature Ts of the temperature-controlled air, the above-mentioned maximum deviation (or It takes the form of changing according to the above-mentioned maximum room temperature and minimum room temperature.

[Problems to be Solved by the Invention]

However, in an air conditioning system equipped with a variable air volume unit in each of a plurality of air conditioning target rooms, the temperature Ts for temperature adjustment (specified temperature Tsp for temperature adjustment) according to the "maximum deviation" etc. as in the conventional system described above. By changing the temperature control temperature Ts to a constant value, the required amount of temperature control supply to the air conditioning load change is reduced, which allows the temperature control supply by the air flow rate unit. When adjusting the amount, secure a wide load fluctuation range that can correspond to the entire multiple air-conditioned rooms and each of the multiple air-conditioned rooms, and significantly affect the air-conditioning comfort in each air-conditioned room. Although it is possible to obtain the effect of suppressing the change in the air flow effect to be given, there are the following problems.

The problem is that the temperature adjustment temperature Ts (Tsp) is changed according to the "maximum deviation", and the temperature adjustment temperature Ts (Tsp) is changed according to the "maximum room temperature or minimum room temperature". Since the same applies to the case where the above configuration is adopted, the following description will be made on behalf of the configuration in which the temperature Ts (Tsp) of temperature adjustment is changed according to the “maximum deviation”.

In other words, if the "maximum deviation" is the same, a certain specified temperature Tsp is specified regardless of whether the room temperature deviation ΔTr in the air conditioning target rooms other than the air conditioning target room in the maximum deviation status is large or small as a whole. As a result, the temperature Ts of the temperature adjustment is regulated to a constant value. In other words, the temperature adjustment temperature Ts (Ts
The change of p) does not correspond appropriately to the overall air conditioning load of multiple air-conditioned rooms. Therefore, for example, in an air-conditioned room other than the air-conditioned room with the maximum deviation, , It is easy for the variable air volume unit to reach the airway throttling limit and the temperature of the air-conditioned room cannot be adjusted. Then, there is a problem that the air-conditioning comfort of these other air-conditioned rooms is easily impaired.

An object of the present invention is to provide an air conditioning system of a type in which a plurality of air conditioning target rooms are equipped with a variable air volume unit, by changing and adjusting the temperature of temperature control supplied to these air conditioning target rooms in a rational manner. , While ensuring the wide range of load fluctuations that can be dealt with while solving the above problems,
This is to effectively suppress changes in the air flow effect in each air-conditioned room.

[Means for solving the problem]

A first characteristic configuration of an air conditioning system according to the present invention (a characteristic configuration of the invention according to claim 1) is that a fan for supplying temperature-controlled air whose temperature has been adjusted by an air conditioner to a plurality of air-conditioned chambers is provided. In each of the, the air flow rate unit that changes the supply amount of temperature adjustment to the corresponding air-conditioned room by adjusting the air passage opening according to the difference between the target temperature and the detected temperature of the air-conditioned room, As the air temperature control means for changing the temperature of the temperature-controlled air supplied to each of the air-conditioned rooms according to the air-conditioning load, the specified temperature of the temperature-controlled air and the detected temperature are adjusted so that the temperature of the temperature-controlled air becomes the specified temperature. In the configuration provided with an air supply temperature adjusting means for adjusting the temperature control capacity of the air conditioner in accordance with the deviation between the air conditioning device and a supply air temperature specifying means for changing the specified temperature of the temperature adjustment according to the air conditioning load. The temperature designating means supplies temperature control to the plurality of air-conditioned rooms. In accordance with the detected value of the sum of, lies in that it is constituted to override the specified temperature of the air temperature control.

A second characteristic configuration of the air conditioning system according to the present invention (a characteristic configuration of the invention according to claim 2) specifies a system configuration that is configured in the implementation of the first characteristic configuration described above. In the characteristic configuration, a fan capacity control unit that changes the capacity of the fan according to an air conditioning load is provided, and the fan capacity control unit is configured to respond to a detected value of a sum of temperature-controlled air supply amounts to the plurality of air-conditioning target chambers. The configuration is such that the capacity of the fan is changed.

[Work]

In the first characteristic configuration, the temperature adjustment by the air conditioner is supplied to the plurality of air-conditioning target rooms by the fan, while the air-conditioning target chambers corresponding to each of the plurality of air-conditioning target rooms The amount of temperature control air supplied to the air-conditioning target room is changed according to the deviation between the target temperature and the detected temperature of the room to be air-conditioned. The temperature is adjusted to an equilibrium state in which the air-conditioning load and the air-conditioning capacity are balanced in the vicinity temperature within the allowable range for

Then, in the change adjustment of the temperature control supply amount by these air flow rate units, the sum of the temperature control supply amounts to the plurality of air-conditioned rooms (in other words, the total supply amount from the air conditioner) changes. According to the detected value of the sum of the temperature adjustment supply amounts, the temperature control means changes the temperature adjustment temperature to be sent from the air conditioner to the plurality of air conditioning corresponding rooms.

Specifically, the air temperature adjusting means adjusts the temperature control capacity of the air conditioner according to the deviation between the specified temperature of the temperature adjustment and the detected temperature, and adjusts the temperature of the temperature adjustment to the specified temperature. By changing the specified temperature of this temperature adjustment by the air supply temperature specifying means in accordance with the detected value of the sum of the above temperature adjustment supply amounts, the temperature of the temperature adjustment sent from the air conditioner to the plurality of air-conditioned rooms can be adjusted. In cooling, the temperature is changed to a lower temperature side as the detected value of the sum increases, and in heating, the temperature is changed to a higher temperature side as the detected value of the sum increases.

That is, as described above, each variable air volume unit changes the temperature adjustment supply amount to each air conditioning target room so as to balance the air conditioning load and the air conditioning capacity for each of the plurality of air conditioning target rooms. The sum of the temperature-controlled supply amounts to the air-conditioned rooms is a value that indicates the overall air-conditioning load of the plurality of air-conditioned rooms as a real value. If the temperature adjustment temperature is changed according to the detected value, the temperature adjustment temperature will be changed compared to the conventional system that changes the temperature adjustment temperature (specified temperature) according to the maximum deviation. , It is possible to appropriately change the overall air conditioning load of a plurality of air conditioning target rooms.

In this way, by changing the temperature of temperature adjustment in accordance with the overall air conditioning load of multiple air-conditioning target rooms, compared to the type in which the temperature of temperature adjustment is fixed at a constant value By reducing the required amount of change in the supply amount, a wide range of load fluctuations that can be accommodated for all of the multiple air conditioning target rooms and each of the multiple air conditioning target rooms can be secured, and in each air conditioning target room Effectively suppress changes in airflow effects that have a major impact on air conditioning comfort.

In the second characteristic configuration, in the change adjustment of the temperature adjustment supply amount by the air flow rate unit, the sum of the temperature adjustment supply amounts to the plurality of air-conditioned chambers (total supply amount) is changed, but the temperature adjustment is performed. In parallel with the temperature change, and in the same way as this temperature adjustment temperature change, the capacity of the temperature adjustment supply fan is adjusted according to the detected value of the sum of the temperature adjustment supply amounts for the multiple air-conditioned rooms. , The fan capacity is changed to the capacity increasing side by the fan capacity control means as the detected value of the sum increases in each of cooling and heating.

That is, if the fan capacity is changed according to the detected value of the sum of the temperature-controlled air supply amounts to the plurality of air-conditioned rooms in this manner, the maximum deviation, etc. can be obtained in the same manner as the above-mentioned temperature-controlled air temperature change. As compared with the above-described conventional system in which the capacity of the fan is changed in accordance with the above, the capacity of the fan can be appropriately changed in accordance with the overall air conditioning load of the plurality of air conditioning target rooms.

In this way, by changing the capacity of the temperature-controlled air supply fan according to the overall air-conditioning load of a plurality of air-conditioned rooms, the air passage opening can be adjusted compared to the case where the fan capacity is fixed at a constant value. In the adjustment of the temperature-controlled air supply amount in each variable air volume unit, the necessary change amount of the air passage opening for the change in the air-conditioning load in the air-conditioned room (that is, the temperature-controlled air supply quantity to the air-conditioned room is changed by the same amount). The amount of change in the air passage opening required for air conditioning is kept small and the air passage opening is kept as stable as possible in the vicinity of a relatively large appropriate opening. It can be adjusted.

〔The invention's effect〕

That is, according to the first characteristic configuration of the present invention, in a form in which each of the plurality of air-conditioning target rooms is equipped with a variable air volume unit, the temperature of temperature adjustment sent to the plurality of air-conditioning target chambers is set to the plurality of air-conditioning target rooms. Since it can be changed appropriately corresponding to the overall air conditioning load of the room, the problem that occurred in the above-mentioned conventional system that changes the temperature of temperature adjustment according to the maximum deviation, that is, the air conditioning target in the maximum deviation situation Air conditioners other than the air-conditioning target rooms other than the air-conditioning target room that are in the maximum deviation status, such as those where the variable air volume unit reaches the airway throttling limit and temperature adjustment to the air-conditioning target room becomes impossible. It is possible to prevent the problem that the air conditioning condition in the target room becomes unsuitable and the air conditioning comfort of these other air conditioning target rooms is easily impaired, thereby achieving improvement in air conditioning comfort of each of the multiple air conditioning target rooms. While, to secure a wide adaptable load variation range, also the basic object can be achieved such suppresses the change in the air flow effects a significant effect on air-conditioning comfort in each air conditioned room.

According to the second characteristic configuration of the present invention, the required change amount of the air passage opening with respect to the change of the air conditioning load (that is, the change of the air passage opening required to change the temperature adjustment supply amount to the air conditioning target chamber by the same amount). Amount) to keep the air passage opening near a relatively large proper opening as stable as possible, and to allow the air volume changing unit to function as a temperature adjustment function for the air-conditioned room, thereby changing each air volume changing unit. It is possible to reduce the waste of fan power by reducing the operating state with a large pressure loss that causes the valve to function with a small air passage opening state.

In addition, since the fan capacity can be changed appropriately in response to the overall air conditioning load of multiple air conditioning target rooms, the variable air volume unit can change the air path in the air conditioning target room other than the air conditioning target room in the maximum deviation situation. The waste of the fan power can be reduced more reliably and effectively as compared with the above-described conventional system in which it is easy to reach the throttling limit.

〔Example〕

FIG. 1 shows the overall configuration of an air conditioning system, where 1 is an air conditioning target part having a plurality of air conditioning target chambers 1a, 2 is an air conditioner, and this air conditioner 2 is an evaporator in cooling by switching the refrigerant flow direction. Heat exchanger 3 for temperature control that functions as a condenser in heating, a heat exchanger 4 for heat source that performs the opposite functions in cooling and heating to the heat exchanger 3 for temperature control, and these. A heat pump circuit H mainly including a compressor 6 and an expansion valve 7 which are interposed in a refrigerant circulation circuit 5 connecting both heat exchangers 3 and 4 is incorporated.

As a basic function of the air conditioner 2, the temperature of the return air RA returning from each air conditioning target room 1a via the return air passage 8 is adjusted by the temperature control heat exchanger 3 (that is, cooling in cooling, heating in heating).
Then, this temperature adjustment is sent to the air supply air passage 10 by the air supply fan 9 as air supply SA to each air conditioning target room 1a. In parallel with this, the outside air OA taken in from the outside air duct 11 by the outside air fan 12 is exchanged with the heat source heat exchanger 4 as a heat radiation target in cooling and as a heat collection target in heating, and then,
The outside air OA is used as the exhaust air EA, and the exhaust fan 13 exhausts the air.
Outgoing via 14

In addition to this basic function, in the air conditioner 2, a part of the return air RA is diverted by adjusting the dampers 15 and 16, and the diverted return air RA ′ is recovered as exhaust heat (that is, cold heat recovery in cooling). , The heat is recovered in heating) and then sent out to the outside so that it is merged with the intake outside air OA upstream of the heat source heat exchanger 4, while the amount of the intake outside air OA corresponding to the above-mentioned return mood flow rate is collected. The outside air OA ′ is divided by adjusting the dampers 17 and 18, and the divided outside air OA ′ is temperature-controlled and supplied as fresh air for ventilation to each air-conditioning target room 1a at an upstream side of the temperature-adjusting heat exchanger 3. Join the return air RA.

In the air conditioner 2, the total amount of the return air RA is sent to the outside through the heat source heat exchanger 4 and the exhaust air passage 14 by adjusting the dampers 15, 16, 17, 18 and, on the other hand, Fresh air
A so-called all-fresh operation is also possible, in which the entire amount of OA is supplied to each air-conditioning target room 1a via the temperature control heat exchanger 3 and the air supply air passage 10.

The air conditioner 2 adjusts the capacity of the compressor 6 in the heat pump circuit H in each of cooling and heating,
The air supply temperature adjusting means 23 for adjusting the temperature Ts (air supply temperature) of the air supply SA sent to each air conditioning target room 1a to a specified air supply temperature Tsp described later is provided,
Specifically, this air temperature adjusting means 23 is
As shown in the figure (b), the supply air temperature specifying unit 36 of the specified controller 36
The designated air supply temperature Tsp designated by A and the air supply temperature Ts detected by the air supply temperature sensor 19 are compared by the comparator 20, and the designated air supply temperature Ts given as the comparison result by the comparator 20.
In accordance with the deviation ΔTs between p and the detected supply air temperature Ts, the controller 22 adjusts the inverter controller 21 for the compressor 6 by the PID control method or the like, thereby adjusting the supply air temperature Ts to the specified supply air temperature Tsp. It is configured to do so.

The air conditioner 2 is also provided with a fan capacity adjusting means 26 for adjusting the capacity F of the air supply fan 9 to a specified fan capacity Fp described later in each of cooling and heating, and specifically, the fan capacity adjusting means. 26 is a PID control system or the like by the controller 25 according to the designated fan capacity Fp designated by the fan capacity designating unit 36B of the designated controller 36.
The inverter controller 24 is adjusted and controlled to adjust the capacity F of the air supply fan 9 to the designated fan capacity Fp.

In contrast to this air conditioner configuration, on the side of the air conditioning target room 1a,
As shown in FIG. 2 and FIG. 2 (a), each air conditioning target room 1a is equipped with a variable air volume unit 27, and by these variable air volume units 27, the supply amount of supply air SA to each air conditioning target room 1a is increased. The v (air supply amount) is individually changed and adjusted according to a room temperature deviation ΔTr in each air conditioning target room 1a, which will be described later.

Each variable air volume unit 27 adjusts the opening degree of the branch air supply air passage 10a to the air conditioning target room 1a to adjust the air supply amount v to the air conditioning target room 1a, and the adjusted air supply amount v by this motor damper 28. The temperature Tr detected by the air flow sensor 29 and the room temperature sensor 30 for detecting the temperature Tr of the air-conditioned room 1a is compared with the target temperature Trp set by the room temperature setter 31, and these deviations (ΔTr = Tr−T
rp), and a controller 33 for adjusting and controlling the motor damper 28 based on the room temperature deviation ΔTr determined by the comparator 32 and the supply air amount v detected by the air flow sensor 29. With the adjustment control of the motor damper 28 by the device 33, the air supply amount v for each of the air-conditioned rooms 1a is changed and adjusted.

Specifically, the controller 33 in the variable air volume unit 27
Is based on a preset air supply amount adjustment pattern vl (solid line pattern for cooling, broken line pattern for heating) as shown in FIG. The air supply amount v corresponding to the room temperature deviation ΔTr is set as the target air supply amount vp, and the motor damper 28 is controlled by the PID control method or the like according to the deviation Δv between the target air supply amount vp and the detected air supply amount v. By performing the adjustment control, the air supply amount v to the air-conditioned room 1a is adjusted to the above target air supply amount vp.

In FIG. 3, ΔTr1 is an allowable lower limit value of the room temperature deviation ΔTr, ΔTr2 is an allowable upper limit value of the room temperature deviation ΔTr, vmin is a set minimum supply air amount, and vmax is a set maximum supply air amount.

In other words, according to the variable air volume unit 27 described above, in the rising process after the start of the air conditioning operation, when the room temperature deviation ΔTr in the case of cooling is in the state of the allowable upper limit value ΔTr2 or more,
Also, in the case of heating, the room temperature deviation ΔTr is the allowable lower limit value Δ
When Tr1 or less, the air supply amount v is the set maximum air supply amount v
The adjustment is maintained at max, and as a result, the room temperature deviation ΔTr shifts toward 0.

Then, when the start-up progresses and the room temperature deviation ΔTr becomes less than the allowable upper limit value ΔTr2 in the case of cooling, and when the room temperature deviation ΔTr becomes larger than the allowable lower limit value ΔTr1 in the case of heating, the supply is performed according to the room temperature deviation ΔTr. As a result of increasing or decreasing the air volume v (target air supply volume vp), the room temperature deviation ΔTr converges to a certain value within the allowable upper and lower limit range (ΔTr1 ≤ ΔTr ≤ ΔTr2) (that is, the air-conditioning target room 1a is air-conditioned). The load q and the air conditioning capacity for the air conditioning target room 1a are matched), but the air conditioning load q (that is, the cooling and heating load) of the air conditioning target room 1a changes from this equilibrium state, and the room temperature deviation ΔTr becomes the above convergence value. Change from the target air supply amount vp accompanying this, the air supply amount v is changed to follow the changed air conditioning load q.
To obtain a new equilibrium condition for the motor damper 28
Is adjusted and controlled, and the air supply amount v is automatically changed.

That is, qualitatively, as the air conditioning load q of the air conditioning target room 1a increases, the air supply amount v to the air conditioning target room 1a gradually increases, and as the air conditioning load q of the air conditioning target room 1a decreases, The air supply amount v to the air-conditioned room 1a is gradually reduced.

Looking at the plurality of air-conditioning target chambers 1a as a whole, the group of motor dampers 28 constitutes the air volume adjusting means 34 for adjusting the total air supply amount (V = Σv) to the plurality of air-conditioning target chambers 1a. The control system group for the motor damper 28 is
Depending on the overall air conditioning load (Q = Σq) of the plurality of air conditioning target rooms 1a, the total air supply amount (V
= Σv) is changed to configure the air volume system control means 35.

In contrast to the above-described air supply amount adjustment by the air flow amount unit 27, the designated controller 36 described above detects the air supply amount v detected by the air flow sensor 29 in each air flow amount unit 27, and
The above-mentioned set maximum air supply amount vmax set in each variable air volume unit 27 is used as control information for each variable air volume unit 27.
Input from the information output unit 27a, and based on this input information (v, vmax), the specified air supply temperature Tsp is determined in the air supply temperature specifying unit 36A, and similarly, this input information (v, vmax) Based on the above, the specified fan capacity Fp is determined in the fan capacity specification unit 36B.

Specifically, the supply air temperature designation unit 36A determines the sum total of the detected supply air amount v (V = Σv) and the sum total of the set maximum supply air amount vmax (Vm
ax = Σvmax) and calculate the sum V, Vmax
The ratio value (V / Vmax) is calculated, and based on the preset air temperature adjustment pattern Tl as shown in FIGS. 4 (a) and 4 (b), the above calculation is performed on this air temperature adjustment pattern Tl. Supply air temperature Ts corresponding to the ratio value (V / Vmax) is the specified supply air temperature Tsp
Then, the designated supply air temperature Tsp is designated as the adjustment target value to the supply air temperature adjusting means 23.

That is, FIG. 4 (a) shows the air supply temperature adjustment pattern Tl in the case of cooling, and FIG. 4 (b) shows the air supply temperature adjustment pattern Tl in the case of heating. By determining the specified air supply temperature Tsp based on Tl as described above, the larger the calculated ratio value (V / Vmax) is, that is, the total sum of the set maximum air supply amount vmax (Vmax = Σvma
Since x) is the sum of the set values and is a fixed value, in other words, as the total sum (V = Σv) of the detected supply air amount v increases, the specified supply air temperature Tsp gradually decreases in the case of cooling. In the case of heating, the designated supply air temperature Tsp is gradually increased, and conversely, the smaller the calculated ratio value (V / Vmax) is, that is, the total sum of the detected supply air amount v (V = As Σv) becomes smaller, the designated supply air temperature Tsp is gradually increased in the case of cooling, and the designated supply air temperature Tsp is gradually decreased in the case of heating.

In short, in the present example, the above-mentioned supply air temperature designating unit 36A and the supply air temperature adjusting means 23 adjust the temperature adjustment ability of the air conditioner 2 to adjust the sum of the supply air amounts v to the plurality of air-conditioned rooms 1a (Σv =
V) according to the detected value of the air supply temperature control means for changing the air supply temperature Ts in accordance with the detected value of the sum (Σv = V) of the air supply amount v for the plurality of air-conditioned chambers 1a. By changing the supply air temperature Ts by changing the supply air temperature Ts, the supply air temperature Ts is changed according to the room temperature deviation (maximum deviation) of the air conditioning target room having the largest room temperature deviation ΔTr among the plurality of air conditioning target rooms 1a. Alternatively, among the plurality of air-conditioning target rooms 1a, the room temperature of the air-conditioning target room where the room temperature Tr is the highest in the cooling (maximum room temperature), and the room temperature of the air-conditioning target room where the room temperature Tr is the lowest in the heating (minimum room temperature) Compared to the conventional air conditioning system that changes the air supply temperature Ts according to the room temperature), the air supply temperature Ts can be changed by appropriately corresponding to the overall air conditioning load (Q = Σq) of a plurality of air conditioning target rooms 1a. There is.

FIG. 5A shows the total cooling load (Q = Σq) and the total supply air temperature (V = V) in the case of cooling in the air conditioning system of this example.
Σv) and the supply air temperature Ts are shown, and FIG. 5 (B) shows the total heating load (Q = Σq) and the total supply amount (V = V) in the case of heating in the air conditioning system of this example. Σv)
And the supply air temperature Ts are shown below.
Is appropriately changed to the total air conditioning load (Q = Σq) of the plurality of air conditioning target rooms 1a (that is, the sum Σ of the air supply amounts v
As shown in FIG. 8, the air conditioning temperature Ts is fixed to a constant value and the total air conditioning load Q The required change amount ΔV of the total air supply amount V with respect to the change ΔQ of the
Also regarding the change of the air supply amount by 27, the necessary change amount Δv of the air supply amount v with respect to the air conditioning load change Δq of the air-conditioning target room 1a is reduced, whereby the entire plurality of air-conditioning target rooms 1a and the plurality of air-conditioning units are controlled. A wide load fluctuation range that can be dealt with for each of the target rooms 1a is secured. In addition, by reducing the necessary change amount Δv of the air supply amount v with respect to the air conditioning load change Δq in each individual air conditioning target room 1a, changes in the air flow effect that greatly affects air conditioning comfort are also effectively suppressed.

Furthermore, as shown in (a) and (b) of FIG. 7, the portion corresponding to the change in the air conditioning load Q is fixed by changing the air supply amount V with the air supply temperature Ts kept constant. And supply temperature Ts
Compared with the configuration in which the portion corresponding to the change in the air conditioning load Q is arranged side by side in the load variation range only by changing the
(In other words, by adopting a mode in which the air supply amount v of each individual air-conditioning target room 1a) and the supply air temperature Ts are changed in parallel to the load fluctuation coping side, the entire plurality of air-conditioning target rooms 1a, and For each of the plurality of air-conditioning target rooms 1a, the convergence of the air-conditioning loads Q and q to the equilibrium state in which the air-conditioning capacity is matched is accelerated.

On the other hand, the fan capacity designating unit 36B calculates the above-mentioned ratio value (V / Vmax) from the input information (v, vmax) in the same manner as the air supply temperature designating unit 36A, and the preset value as shown in FIG. Based on the fan capacity adjustment pattern Fl, the fan capacity F corresponding to the calculated ratio value (V / Vmax) on the fan capacity adjustment pattern Fl is determined as the specified fan capacity Fp, and the specified fan capacity Fp is determined. For the fan capacity adjusting means 26 of
Specify it as the adjustment target value.

That is, by determining the designated fan capacity Fp as described above based on such a fan capacity adjustment pattern Fl, the calculated ratio value (V /
The larger the Vmax), in other words, the larger the total sum (V = Σv) of the detected air supply amount v, the designated fan capacity Fp.
Gradually increase, and conversely, the calculated ratio value (V / Vmax)
Becomes smaller, in other words, the smaller the total sum (V = Σv) of the detected supply air amount v becomes, the designated fan capacity Fp is gradually decreased.

In short, in this example, the above-mentioned fan capacity designating unit 36
B and the fan capacity adjusting means 26 constitute a fan capacity control means for changing the fan capacity F of the air supply fan 9 according to the detected value of the sum (Σv = V) of the air supply amounts v for the plurality of air-conditioned rooms 1a. In this way, by adopting a mode in which the fan capacity F is changed according to the detected value of the sum (Σv = V) of the air supply amount v for the plurality of air-conditioned rooms 1a, the maximum deviation, etc., like the air temperature Ts, can be obtained. Compared to the conventional air conditioning system in which the fan capacity F is changed in accordance with the above, the fan capacity F can be changed by appropriately corresponding to the overall air conditioning load (Q = Σq) of the plurality of air conditioning target rooms 1a. .

Then, the fan capacity F of the air supply fan 9 is changed so as to appropriately correspond to the overall air conditioning load (Q = Σq) of the plurality of air conditioning target rooms 1a (that is, according to the detected value of the sum Σv of the air supply amounts v). In this case, when the fan capacity F is fixed to a constant value, the required change amount of the air passage opening with respect to the air conditioning load change Δq (that is, the air conditioning target The amount of change in the air passage opening required to change the air supply amount v for the chamber 1a by the same amount) is made small, and the air passage opening is kept as stable as possible near a relatively large appropriate opening. The variable air volume unit 27 can be made to function, whereby the operating state of large pressure loss that causes each variable air volume unit 27 to function in a small air duct opening state is reduced, and waste of fan power is reduced.

By reducing the required change amount of the air passage opening in this way, the air passage opening can be kept as stable as possible in the vicinity of a relatively large appropriate opening, and waste of fan power is reduced. As for the above, as the required change amount Δv of the air supply amount v itself due to the change of the air supply temperature is decreased, the required change amount of the air passage opening degree with respect to the air conditioning load change Δq becomes small, which also contributes to the effective achievement thereof. ing.

In the claims of the present invention, reference numerals are given for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

1 to 6 show an embodiment, FIG. 1 is an overall system configuration diagram, FIGS. 2 (a) and 2 (b) are control block diagrams respectively, and FIG. 3 shows a supply amount adjustment pattern. Graph, 4th
Figures (a) and (b) are graphs showing the air supply temperature adjustment pattern, respectively. Figures 5 (a) and (b) are correlation graphs of load, air supply amount, and air temperature, and Fig. 6 is a fan capacity adjustment pattern. It is a graph which shows. 7 (a) and 7 (b) are correlation graphs of load, air supply amount, and air temperature showing a comparative example, and FIG. 8 shows load, air supply amount, and air temperature of another comparative example. It is a correlation graph. (2) …… Air conditioner, (SA) …… Temperature control, (1a) …… Air conditioning target room, (9) …… Fan, (v) …… Temperature control supply amount,
(Trp) …… Target temperature, (Tr) …… Detected temperature, (ΔTr) ……
Deviation, (27) …… Variable air volume unit, (Ts) …… Temperature control temperature, (Tsp) …… Temperature control designated temperature, (ΔTs) …… Deviation, (2
3) ... Air temperature adjusting means, (36A) ... Air temperature specifying means,
(Σv) …… sum of temperature control supply, (F) …… fan capacity, (36B, 26) …… fan capacity control means.

Claims (2)

(57) [Claims] 1. A fan (9) for supplying temperature-controlled air (SA) whose temperature is adjusted by an air conditioner (2) to a plurality of air-conditioning target rooms (1a), each of the air-conditioning target rooms (1a) The supply amount (v) of temperature-controlled air (SA) to the corresponding air-conditioned room (1a) is defined as the deviation (ΔTr) between the target temperature (Trp) and the detected temperature (Tr) of the air-conditioned room (1a). According to the air-conditioning load, a temperature change unit (27) that changes the air-passage opening according to the air-conditioning load is provided, and the temperature (Ts) of the temperature adjustment (SA) supplied to each of the air-conditioning target chambers (1a) is changed according to the air-conditioning load. As a means for controlling the supply air temperature, the deviation between the specified temperature (Tsp) of the temperature adjustment (SA) and the detected temperature (Ts) so that the temperature (Ts) of the temperature adjustment (SA) becomes the specified temperature (Tsp). The temperature control means (23) for adjusting the temperature control capacity of the air conditioner (2) according to (ΔTs) and the designated temperature (Tsp) of the temperature control (SA) are designated and changed according to the air conditioning load. Designation of supply temperature An air conditioning system provided with means (36A), wherein the air supply temperature designating means (36A) is a detection value of a sum (Σv) of temperature adjustment supply amounts (v) to the plurality of air conditioning target chambers (1a). The air conditioning system is configured to change the designated temperature (Tsp) of temperature adjustment (SA) according to the. 2. A fan capacity control means (36B, 26) for changing the capacity (F) of the fan (9) according to an air conditioning load is provided, and the fan capacity control means (36B, 26) is provided with a plurality of the above. Sum (Σv) of temperature control supply (v) to the air-conditioned room (1a)
The air-conditioning system according to claim 1, wherein the capacity (F) of the fan (9) is changed according to the detected value of.