JPH06281239A - Air conditioner - Google Patents

Abstract

PURPOSE:To prevent ventilation performance to be decreased while elaborately adjusting the room temperature and precisely controlling the room temperature into the target temperature improving the intake system to a room subject to air- conditioning. CONSTITUTION:In an air conditioner, a wind quantity adjusting means 21 for adjusting the intake amount to a room subject to air-conditioning R by adjusting of the opening is provided on an intake wind passage 20 to the room subject to air-conditioning, and a control means 23 for adjusting the opening of the wind quantity adjusting means 21 from full closing to full opening on the basis of the detected room temperature of a room temperature detecting means 18 for detecting the room temperature of the room subject to air-conditioning so that the detected temperature may become the target temperature is provided. The intake wind passage 20 is composed of a main passage 20m through which intake air flows after passing the wind quantity adjusting means 21 and an auxiliary passage 20b through which intake air flows while being detoured, and a passage opening/closing means 22 is provided on the auxiliary passage 20b. When the control means 23 adjusts the opening of the wind quantity adjusting means 21 into that in full closed or that approximately in full closed, the passage opening/closing means 22 is switched into the opened state from the closed state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with an air flow rate adjusting means for adjusting the amount of air supplied to the air conditioning target room by adjusting the opening degree in the air supply air path for the air conditioning target room. The present invention relates to an air conditioner provided with a control means for adjusting the opening degree of the air volume adjusting means from fully closed to fully opened so that the detected room temperature reaches a target temperature based on the detected room temperature of the room temperature detecting means.

[0002]

2. Description of the Related Art Based on the room temperature detected by the room temperature detecting means, such an air conditioner adjusts the opening of the air volume adjusting means from fully closed to fully opened so that the detected room temperature reaches a target temperature. That is, by widening the adjustment range of the opening of the air volume adjusting means, the opening of the air volume adjusting means is adjusted even for a slight change in room temperature to adjust the amount of air supplied to the air-conditioned room. By doing so, it is possible to finely adjust the room temperature and accurately control the room temperature to the target temperature. Therefore, in this device, when the opening degree of the air volume adjusting means is adjusted to the fully closed state by the control means, the amount of air supplied to the air-conditioned room becomes zero.

[0003]

However, when the amount of air supplied to the air-conditioned room becomes zero, the ventilation of the air-conditioned room deteriorates. Since the time ratio at which the amount becomes zero becomes large and the ventilation of the air-conditioned room decreases significantly, improvement has been desired.

By the way, in order to prevent the decrease in the ventilation of the air-conditioned room, the opening of the air volume adjusting means is changed from the opening that can secure the air supply enough to maintain the ventilation of the air-conditioned room to the full opening. It is assumed that the amount of air supply is sufficient to maintain the ventilation of the air-conditioned room by performing the adjustment. However, in this case, since the adjustment range of the opening of the air volume adjusting means is narrow, it is not possible to finely adjust the room temperature,
As a result, there is a problem that the room temperature cannot be accurately controlled to the target temperature.

The present invention has been made in view of the above circumstances, and an object thereof is to rationally improve the form of air supply to a room to be air-conditioned so that the room temperature can be finely adjusted and the room temperature can be accurately adjusted. The purpose is to be able to control the target temperature while preventing a decrease in ventilation.

[0006]

The air conditioner according to the present invention is characterized in that the air supply air passage has a main passage through which the air supply air passes through the air flow rate adjusting means and an auxiliary passage through which the air supply bypasses. A flow path, the auxiliary flow path is provided with a flow path opening / closing means, and when the control means adjusts the opening of the air volume adjusting means to a fully closed or an opening close to the fully closed, the flow The road opening / closing means is configured to be switched from the closed state to the open state.

[0007]

According to the above characteristic structure, the control means adjusts the opening degree of the air volume adjusting means from fully closed to fully open based on the detected room temperature of the room temperature detecting means so that the detected room temperature becomes the target temperature. Further, the control means switches the flow passage opening / closing means provided in the auxiliary flow passage from the closed state to the open state when the opening degree of the air flow rate adjusting means is adjusted to the fully closed state or an opening degree close to the fully closed state. In other words, since the adjustment range of the opening of the air volume adjusting means is wide, the opening of the air volume adjusting means can be adjusted even if the room temperature changes slightly. Further, when the opening of the air volume adjusting means becomes a fully closed or an opening close to the fully closed and the air supply amount decreases to such an extent that the ventilation of the air-conditioned room decreases, the air supply is controlled through the auxiliary flow path. Can be supplied to the chamber. The amount of air supplied to the room to be air-conditioned through the auxiliary flow path is preferably set to an amount that has little effect on the room temperature of the room to be air-conditioned.

[0008]

Therefore, as described above, since the opening degree of the air volume adjusting means can be adjusted even for a slight change in the room temperature, the room temperature can be finely adjusted and the room temperature can be accurately controlled to the target temperature. Became. Moreover, when the amount of air supply decreases to the extent that the ventilation of the air-conditioned room decreases, the air supply can be supplied to the air-conditioned room from the auxiliary flow path, so it is possible to prevent the ventilation of the air-conditioned room from decreasing. I can do it now.

[0009]

Embodiments will be described below with reference to the drawings.
In FIG. 1, K indicates an air conditioner and R indicates an air conditioning target room.
Although there are a plurality of air-conditioning target rooms R, in FIG.
Only the chamber is shown.

In the air conditioner K, the air supply side heat exchanger 1, which functions as an evaporator during the cooling operation by switching the refrigerant flow direction and functions as a condenser during the heating operation, and this air supply side heat exchange. The heat exchanger 2 on the exhaust side, which has a function opposite to that of the device 1 during cooling and heating operations, and these heat exchangers 1, 2.
A heat pump having a compressor 4 and a expansion valve 5 as main devices is provided in a refrigerant circulation path 3 connecting the two.

The structure of the air passage will be described. After passing the outside air OA through the outside air passage 6 to the exhaust side heat exchanger 2 as a target for radiating condensation heat during cooling operation and as a target for absorbing evaporation heat during heating operation, the outside air fan 8 is connected.
At the same time, the exhaust air EA is discharged to the outside of the system as the exhaust air EA through the exhaust air passage 7, and in parallel with this, the return air RA from the air conditioning target room R is conducted to the air supply side heat exchanger 1 through the return air air passage 9. After the temperature is adjusted by the air supply, the air supply fan 10 distributes and supplies the air supply SA to each air conditioning target room R through the main air supply air passage 11.

Furthermore, a part of the return air RA flowing through the return air passage 9 is diverted, and the diverted return air RAb is merged with the outside air OA flowing through the outside air passage 6; A part of the outside air OA flowing through the outside air flow path 6 is diverted upstream of the confluence with the return mood air flow path 9b, and the diverted outside air OAb is downstream of the divergence point of the return air flow path 9b. An outside air flow passage 6b is provided to join the return air RA flowing through the return air passage 9. Furthermore, by adjusting the opening of each, the return air RA
Air flow rate adjusting dampers 12, 13, 14, 15 for adjusting the flow dividing ratios of b and the divided outside air OAb are provided. The split return air RAb and the split outside air OAb are adjusted to have substantially the same air flow rate.

That is, the exhaust heat is recovered by combining the split return air RAb with the outside air OA which is conducted to the exhaust side heat exchanger 2, and the return air RA which is conducted to the supply air heat exchanger 1.
On the other hand, by joining the freshly divided outside air OAb, ventilation is performed in accordance with cooling or heating of each air conditioning target room R.

The main air supply air passage 11 is provided with a supply air temperature sensor 16 for detecting the temperature of the supply air SA. 17 in the figure
Indicates a control device. The control device 17 adjusts and maintains the supply air temperature ts at the target temperature tsp based on the deviation between the supply air temperature ts detected by the supply air temperature sensor 16 and the set target supply air temperature tsp. Adjust the output of 4.

In each air conditioning target room R, a room temperature sensor 18 for detecting a room temperature tr of the air conditioning target room R, and an air conditioning target temperature t
A setting device 19 for setting rp is provided. In the branch air supply air passage 20 for each room R to be air-conditioned, the detected room temperature tr is set based on the room temperature tr detected by the room temperature sensor 18.
A variable air volume device V is provided to adjust the amount of air supplied to the air-conditioned room R so that the target temperature trp set in step 1 is reached.

The branch air supply air passage 20 will be further described.
The branch air supply air passage 20 includes a main flow passage 20m and the main flow passage 20m.
And the auxiliary flow path 20b branched from the above.

The variable air volume device V will be further described. The variable air volume device V includes an air volume adjusting damper 21 as an air volume adjusting means provided in the main flow passage 20m, an auxiliary flow passage damper 22 as a flow passage opening / closing means provided in the auxiliary flow passage 20b, and a control unit 23. . The air volume adjustment damper 21 adjusts the amount of air supplied to the air conditioning target room R by adjusting the opening degree, and the control unit 23 sets the detected room temperature tr to the target temperature trp based on the deviation between the detected room temperature tr and the target temperature trp. So that the air volume adjustment damper 2
Adjust the opening of 1 from fully closed to fully open. That is, the branch air supply air passage 20 is composed of a main flow passage 20m through which the air supply SA flows through the air volume adjustment damper 21 and an auxiliary flow passage 20b that bypasses the air volume adjustment damper 21 and flows. .

Further, the control unit 23 includes an air volume adjusting damper 21.
When adjusting the open position, the auxiliary flow path damper 2
When 2 is closed and the air volume adjustment damper 21 is adjusted to the fully closed state, the auxiliary flow path damper 22 is switched from the closed state to the open state, and the fact that the auxiliary flow path damper 22 is open is notified. The auxiliary channel damper open signal is transmitted to the control device 17.

When the control device 17 receives the auxiliary flow path damper opening signal from the control unit 23, the set target supply air temperature tsp is set to one of the high temperature side during cooling and the low temperature side during heating. Change about 2 ° C.

In other words, the amount of air supplied to the air conditioning target room R through the auxiliary flow path 20b is such that the room temperature of the air conditioning target room R is hardly affected. When SA is supplied to the air-conditioning target room R, the temperature of the supply air SA is changed to the high temperature side during cooling or to the low temperature side during heating, thereby reducing the influence on the room temperature of the air conditioning target room R. is doing.

The variation device V will be further described with reference to FIG. Duct 11 forming main air supply passage 11
A duct 20A forming the branch air supply air passage 20 is communicatively connected to A. 26 in FIG. 2 is the ceiling R of the room R to be air-conditioned.
The outlet attached to s is shown. The box-shaped body 24 that forms the exterior body of the air volume changing device V is provided in a state of being connected to the duct 20A and the blowout port 26 so as to communicate with each other. Inside the box-shaped body 24, a rectifying porous body 25 is provided. Further, inside the box-shaped body 24, two tubular portions along the flow path direction are formed by the partition member 24B on the downstream side of the installation location of the porous body 25. The main passage 20m is formed by the tubular portion having the larger opening area, and the auxiliary passage 20b is formed by the tubular portion having the smaller opening area.
Has been formed. Further, the air flow rate adjusting damper 21 and the control unit 23 are provided in the tubular portion having the larger opening area, and the auxiliary flow path damper 22 is provided in the tubular portion having the smaller opening area.

[Other Embodiments] Next, other embodiments will be listed. In the above-described embodiment, as the configuration for adjusting the amount of air supplied to the room R to be air-conditioned, the variable air volume device V integrally including the air volume adjustment damper 21 and the control unit 23 for adjusting the opening thereof is used. However, instead of this, the control unit 23 may be provided separately from the air volume adjustment damper 21. As a configuration in which the control unit 23 is provided separately from the air volume adjustment damper 21, for example, the control configuration of the control unit 23 is
It may be provided in the control device 17.

In the above embodiment, the control unit 23 is configured to switch the auxiliary flow path damper 22 from the closed state to the open state when the air volume adjustment damper 21 is adjusted to the fully closed state. Instead of this, when the air volume adjustment damper 21 is adjusted to an opening degree close to full closure (that is, an opening degree that reduces the air supply amount to such an extent that the ventilation of the air conditioning target room R decreases), The flow path damper 22 may be configured to be switched from the closed state to the open state.

In the above-described embodiment, the case where the main flow path 20m and the auxiliary flow path 20b are integrally formed in the box-shaped body 24 has been exemplified, but instead of this, the main flow path 20m and the auxiliary flow path 20b are respectively formed. It may be formed by another duct.

It should be noted that reference numerals are given in 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 is an overall configuration diagram of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view around a variable air volume device in an air conditioner.

[Explanation of symbols]

 18 Room temperature detecting means 20 Air supply air passage 20b Auxiliary flow passage 20m Main flow passage 21 Air volume adjusting means 22 Flow passage opening / closing means 23 Control means R Air-conditioned room

Claims (1)

[Claims] 1. An air supply air duct (2) for an air-conditioned room (R).
0) is provided with air volume adjusting means (21) for adjusting the amount of air supplied to the air conditioning target room (R) by adjusting the opening degree, and room temperature detecting means (18) for detecting the room temperature of the air conditioning target room (R). )
An air conditioner provided with control means (23) for adjusting the opening degree of the air volume adjusting means (21) from fully closed to fully open so that the detected room temperature reaches a target temperature. In the air supply air passage (20), air supply is performed by the air volume adjusting means (2).
1) A main flow path (20m) that passes through and a bypass flow path (20b) that bypasses and flow, and a flow path opening / closing means (22) is provided in the auxiliary flow path (20b). When the control means (23) adjusts the opening degree of the air volume adjusting means (21) to a fully closed state or an opening degree close to the fully closed state, the flow path opening / closing means (22) is changed from the closed state to the open state. An air conditioner configured to switch to.