JPH05203245A - Air conditioner - Google Patents

Abstract

PURPOSE:To change the quantity of air blown off periodically by a setting changing pattern under the state, in which the quantity of temperature-regulated air from an air-supply path is kept constant, by varying the quantity of ambient air sucked by adjusting an output from an auxiliary air blower and altering the quantity of blowing-off air of a blowing-off device. CONSTITUTION:In air-conditioning facilities using large space such as in-factory air as space to be air-conditioned 1, blowing-off devices 3 for air conditioning are mounted at a plurality of every partial air-conditioning object region 2. An air conditioner 4 mixing returned air Ar returned through an air returning path 5 from the space to be air-conditioned 1 and the outside air Ao taking in through an outside-air intake path 6 and forming temperature-regulated air As is installed, and the temperature-regulated air As is forwarded to each of the blowing-off devices 3 through an air-supply path by an air-supply blower 7. Auxiliary air blowers 15 sucking ambient air Ar and mixing ambient air with temperature-regulated air As and forwarding the mixed air is set up to each blowing-off device 3. The quantity of ambient air sucked is varied by adjusting outputs from the auxiliary air blowers 15, thus periodically changing the quantity of air blown off by a setting changing pattern.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention distributes the temperature-controlled air blown by the air-supply fan to an air-supply fan that blows temperature-controlled air from an air conditioner and separate blow-off devices for a plurality of local air-conditioning target areas. The present invention relates to an air conditioner provided with an air supply passage and an air volume control means for periodically changing the amount of air blown from the air blower in a set change pattern.

[0002]

2. Description of the Related Art An air conditioner of the above type is provided with a separate blowing device for a plurality of local air conditioning target areas.
Each of these local air-conditioning target areas is spot-conditioned,
Also, by periodically changing the blowing air volume of the blowing device in a setting change pattern, it is intended to improve the comfort in each of the local air conditioning target area, conventionally, in this type of air conditioning device, As shown in FIG. 4, the blowing device 3 has a structure in which only the temperature-adjusted air As supplied from the air supply air passage 8 is blown out as the blowing air to the local air-conditioning target area 2. Therefore, the blowing device is controlled by the air volume control means 16A. In order to periodically change the blown air volume Q of the air blower 3 in the setting change pattern P, the blowing device 3 is also provided with a damper D for changing the temperature-controlled air supply amount from the air supply air passage 8 or a blowout of the supply temperature-controlled air As. Equipped with a booster fan F to assist, the opening adjustment of these dampers D and booster fan F
The blowing air amount Q is changed by changing the supply amount of the temperature-controlled air As by adjusting the output.

[0003]

However, in the above-mentioned conventional device, even if the blowing air amount Q of each of the blowing devices 3 is changed by the same setting change pattern P, the setting change pattern different for each blowing device 3 is obtained. Even if it is changed by P, when the blowout air amounts Q of the plurality of blowing devices 3 are the same and the temperature-controlled air blown amount ΣQ from the air conditioner 4 and the air supply fan 7 is greatly increased, conversely. When the blowout air amounts Q of the plurality of blowing devices 3 overlap with each other and the temperature-controlled air blown amount ΣQ from the air conditioner 4 and the air supply fan 7 greatly decreases, such a large fluctuation range occurs. Since the air supply fan 7 and the air conditioner 4 are operated in an unstable state in which the increase and decrease of the blown air volume are repeated, there is a problem that the service life of the air supply fan 7 and the air conditioner 4 is reduced.

Further, in the conventional device, in the two blowing devices 3 that are adjacent to each other on the path of the air supply air passage 8, the blowing amount of the temperature-controlled air As in one blowing device 3 is changed, so that the other blowing device 3 is affected. For example, a change in the supply amount of the temperature-controlled air As may occur, and the change in the blowing air amount Q of the blowing devices 3 may interfere with each other. Therefore, the actual change in the blowing air amount Q of the blowing devices 3 may change each setting change pattern. It becomes out of P, and the air conditioning performance for the corresponding local air conditioning target area 2 becomes out of the desired one.
There was also a problem.

An object of the present invention is to solve the above problems by changing the blown air volume with a rational configuration.

[0006]

A first characteristic configuration of an air conditioner according to the present invention is characterized in that an air supply fan for blowing temperature-controlled air by an air conditioner and separate blowing devices for a plurality of local air conditioning target areas are provided. In a configuration provided with an air supply air passage for distributing the temperature-controlled air blown by an air supply fan, and an air volume control means for periodically changing the amount of air blown out of the blowing device according to a set change pattern, the ambient air is sucked into the blowing device. Then, an auxiliary fan that blows out a mixture of the intake ambient air and the temperature-controlled air supplied from the air supply air duct to the corresponding local air conditioning target area is provided, and the air volume control means controls the ambient air by adjusting the output of the auxiliary fan. Is configured so as to change the amount of air blown from the blowing device by changing the amount of suction of the air. The action and effect are as follows.

[0007]

In other words, in the above-mentioned first characteristic configuration, by changing the intake amount of the ambient air by adjusting the output of the auxiliary fan, the blowing air amount of the blowing device (that is, the temperature-adjusted air supplied from the air supply air passage and the intake air). The amount of air blown from the air-fuel mixture with the ambient air) is changed, so that the amount of temperature-controlled air supplied from the air supply air passage in each blowing device can be periodically changed in a set change pattern while the amount of temperature-controlled air supplied is constant. ..

Therefore, even if a plurality of blowing devices overlap each other when the blowing air amount becomes maximum or when the blowing air amount becomes minimum, the temperature control air blowing amount from the air conditioner and the air supply fan is increased. Can be constant.

Further, since the temperature-controlled air supply amount from the air supply air passage is a change in the amount of air blown out in a constant state, one temperature-controlled air supply amount is provided between the air-blowing devices adjacent to each other on the air supply air passage route. It is also avoided that the other temperature-controlled air supply amount changes due to the influence of the change and mutual interference occurs in the change in the blown air amount of these blowing devices.

Incidentally, in the above-mentioned first characteristic structure in which the air-fuel mixture of the intake ambient air and the temperature-controlled air supplied from the air supply passage is blown out as the air blown to the target area for local air conditioning, the temperature-controlled air supplied from the air supply passage is supplied. Compared with the conventional device that blows out only
The amount of temperature-controlled air supplied is reduced by the amount of the ambient air mixed, and the temperature of the temperature-controlled air supplied is reduced accordingly for cooling and higher for heating. It is possible to equalize the cooling and heating capacity and the blown air volume with respect to the conventional device, and accordingly, it is possible to reduce the size of the air supply fan and the diameter of the air supply air passage as compared with the conventional device.

[0011]

As described above, as a result of the operation, according to the first characteristic configuration of the present invention, the blowing air amount of each blowing device is changed according to the setting change pattern to improve the comfort in each local air conditioning target area. However, the service life of the air supply fan and the air conditioner can be improved because the air supply fan and the air conditioner can be stably operated in a constant air flow rate state.

Further, even in each of the blowing devices adjacent to each other on the path of the air supply air passage, the blowing air amounts thereof can be accurately changed in accordance with the respective setting change patterns without mutual interference, so that the local air conditioning target A desired air conditioning property can be accurately obtained in each of the regions, and thus the comfort improvement in each of the local air conditioning target regions can be achieved more effectively.

[Second to Fourth Characteristic Configurations of the Present Invention] A second characteristic configuration of the air conditioner according to the present invention is an output adjustment of the auxiliary fan that periodically changes the blowing air volume of the blowing device in a setting change pattern. The reference blowout air volume setting means for changing the reference fan output value is provided.

That is, according to the second characteristic configuration, by changing the reference fan output value, the change pattern of the blown air volume is maintained at the desired setting change pattern while the blown air volume of the reference is changed. The air volume (in other words, the reference air volume to be used to change the air volume at which the air volume is changed) can be changed in accordance with a change in the required air conditioning conditions, switching between heating and cooling, and the like.

A third characteristic configuration of the air conditioner according to the present invention is that pattern setting means for changing the setting change pattern of the blown air volume is provided.

That is, according to the third characteristic configuration, in order to improve comfort by periodically changing the blown air volume, the change pattern of the blown air volume is most effectively achieved. Can be appropriately changed and adjusted.

A fourth characteristic configuration of the air conditioner according to the present invention is that an air supply amount setting means for changing the amount of temperature-controlled air supplied from the air supply air passage to the blowing device is provided.

That is, according to the fourth characteristic configuration, by changing the temperature-controlled air supply amount, it is possible to change / adjust the cooling / heating capacity itself for the local air conditioning target area in accordance with the seasonal change of the cooling / heating load.

[0019]

EXAMPLES Next, examples will be described.

FIG. 1 shows an air-conditioning facility in which a large space such as a space in a factory is set as an air-conditioning target space 1. In contrast to the presence of a plurality of workplaces in the factory, one work area is set as one local air-conditioning target area 2. A plurality of local air-conditioning target areas 2 are set in the air-conditioning target space 1 in the form of setting, etc., and each of these local air-conditioning target areas 2 is provided with an air conditioning blowing device 3.

In the figure, reference numeral 4 designates the air-conditioning space 1 to the return air passage 5.
Is an air conditioner that adjusts the temperature of a mixture of return air Ar returning via the outside air and outside air Ao taken in through the outside air intake air duct 6 (and performing humidity adjustment if necessary).
It is an air supply fan that blows temperature-controlled air As by the air conditioner 4 to each of the blowing devices 3 via the air supply air passage 8 as air supply to the air conditioning target space 1.

Further, 9 is a return air fan, and 10 is an exhaust air passage for discharging a part of the return air Ar (amount substantially equal to the intake amount of outside air) to the outside.

As shown in FIG. 2, the blowing device 3 includes a tubular casing 12 having an opening on one end side as an outlet 11, and a branched air supply air passage 8a is formed in the center of the opening on the other end side of the tubular casing 12. The temperature-controlled air discharge port 13 is provided.

At the other end side opening of the tubular casing 12, the peripheral portion of the temperature-controlled air outlet 13 is used as an inlet 14, and the ambient air Arr around the blowing device 3 (return air from the corresponding local air conditioning target area 2). Of the intake ambient air Arr and the temperature-controlled air As supplied from the branch air supply air passage 8a are mixed in the tubular casing 12, and the mixture Air Am is blown out from the outlet 11 to the corresponding local part. The auxiliary fan 15 blown out to the air conditioning target area 2 is installed in the tubular casing 12, and the corresponding local air conditioning target area 2 is cooled or heated by blowing the air-fuel mixture Am.

Reference numeral 16 denotes a controller for controlling each of the blowing devices 3. The controller 16 changes the suction amount of the ambient air Arr by adjusting the output of the auxiliary fan 15 to blow from the branch air supply passage 8a. While the supply amount of the temperature-controlled air As to the device 3 is constant, for example, (a), (b) in FIG.
An air volume control unit 16A that periodically changes the air flow rate Q of each of the air blowers 3 in the setting change patterns P1, P2, P3 for each of the air blowers 3 as shown by the solid line in (c) is provided. Therefore, the comfort in each of the local air-conditioning target areas 2 is improved.

Reference numeral 17 changes the setting of the fan output value, which serves as a reference in the output adjustment of the auxiliary fan 15 for changing the blowing air amount Q with the setting change pattern P, so that the changing pattern of the blowing air amount Q is changed. While maintaining the desired setting change pattern P, a reference blowing air amount for performing the blowing air amount change is set as the blowing device 3
The setting is changed every time (for example, in (a) of FIG. 3, the blowing air amount Q is changed along the solid line P1. However, as the blowing air amount change pattern, the blowing air amount Q is changed along the broken line P1 ′ equal to the solid line P1. Is a reference blowout air volume setting device.

Further, 18 changes the setting change pattern P of the blowing air amount Q for each blowing device 3 (for example, the blowing air amount Q is changed in the changing pattern shown by the solid line P2 in FIG. 3B). Is changed to a state in which the blown air volume Q is changed in a change pattern indicated by a broken line P4).

That is, the reference blowout air volume setting device 1 described above.
7 and the pattern setter 18 can be used to change and adjust the reference airflow rate and the variation pattern of the airflow rate for each local air conditioning target area 2 in accordance with the work content in the area, the preference of the worker in the area, or the switching of air conditioning and heating. Is done.

By the setting operation of the pattern setting device 18, the blown air amount Q can be fixed to a constant amount without changing the blown air amount Q depending on the local air conditioning target area 2.

On the other hand, reference numeral 19 adjusts the opening degree of a damper 20 provided in the branch air supply air passage 8a to supply the temperature control air As from the air supply air passage 8a to the air blowing device 3.
The setting is changed every time (for example, in (c) of FIG. 3, the blowing air amount Q is changed along the solid line in a state where the supply amount of the temperature-controlled air As is fixed to a value indicated by a thin line. The air supply amount setter that changes the blown air flow rate Q along the solid line P3 with the supply amount of the temperature-controlled air As fixed to the value shown by
By the setting operation for 9, the cooling / heating capacity itself for the local air conditioning target area 2 can be changed / adjusted for each local air conditioning target area 2.

The air conditioner 4 has all the local air conditioning target areas 2 according to the setting of the temperature-controlled air supply amount As in each blowing device 3.
It is operated with a temperature control output commensurate with the total cooling and heating load.

Another Embodiment Next, another embodiment will be described.

A blower 13 for sucking the ambient air Arr by the auxiliary fan 15 and blowing out a mixture Am of the intake ambient air Arr and the temperature-controlled air As supplied from the air supply air passage 8 to the local air conditioning target area 2. Various modifications can be made to the specific structure.

The blowing air volume Q may be periodically changed with the same setting change pattern P for two or more arbitrary numbers (including the total number) of the blowing devices 13.

To change the setting change pattern P of the blown air amount Q, the basic blown air amount, the temperature-controlled air supply amount, etc., change the setting by any number of 2 or more (including the total number).
The blowing device 13 may be collectively configured.

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 configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Fig. 1] Equipment configuration diagram of air conditioning equipment

FIG. 2 is a structural diagram of a blowing device.

FIG. 3 is a graph showing changes in the blown air volume in (a), (b), and (c) respectively.

FIG. 4 is a block diagram of an air conditioning facility showing a conventional example.

[Explanation of symbols]

 2 Local air-conditioning target area 3 Blow-off device 4 Air-conditioner 7 Air supply fan 8 Air supply air duct 15 Auxiliary fan 16A Air volume control means 17 Reference air volume setting means 18 Pattern setting means 19 Air supply volume setting means Q Air flow rate P setting change pattern As Temperature controlled air Arr Ambient air Am Mixture

Claims (4)

[Claims] 1. An air supply fan (7) for blowing temperature-controlled air (As) by an air conditioner (4) and the air supply device (3) for each of a plurality of local air conditioning target areas (2). An air supply air passage (8) for distributing the temperature-controlled air (As) by the fan (7) and an air volume control for periodically changing the air volume (Q) of the air blower (3) in a set change pattern (P). An air conditioner provided with a means (16A), the ambient air (Arr) being sucked into the blowing device (3), and the intake ambient air (Arr) and the air supply air passage (8).
Auxiliary fan (15) that blows out the air-fuel mixture (Am) with the temperature-controlled air (As) supplied from the room to the corresponding local air conditioning target area (2)
The air volume control means (16A) adjusts the output of the auxiliary fan (15) to change the intake volume of the ambient air (Arr) to change the air volume (Q) of the air blower (3). The air conditioner configured in. 2. A reference for changing a fan output value which is a reference in the output adjustment of the auxiliary fan (15) which periodically changes the blown air volume (Q) of the blowing device (3) in a setting change pattern (P). Blow-off air volume setting means (1
7. The air conditioner according to claim 1, which is provided with 7). 3. The air conditioner according to claim 1, further comprising pattern setting means (18) for changing a setting change pattern (P) of the blown air volume (Q). 4. An air supply amount setting means (19) for changing the supply amount of temperature-controlled air (As) from the air supply air passage (8) to the blowing device (3). The air conditioner according to any one of 3 above.