JPH06281199A - Air passage switching chamber unit - Google Patents

Abstract

PURPOSE:To provide an air chamber unit capable of switching a recirculation air conditioning state, a partial return air conditioning state and a total outside air conditioning state to one another with inviting less cost increase in a total air conditioning apparatus and less deterioration in workability. CONSTITUTION:A first chamber CH1 is provided with an outside air introducing port 6 having an outside air damper OD for controlling the amount of air introduced from outside and with an air supply port 7 for supplying air to an air conditioner main body 1, and a second chamber CH2 is provided with a return air inlet port 8 from an air conditioning zone A and with an exhaust port 9 to outside. An exhaust damper ED for controlling the amount of air exhausted outside through the exhaust port 9, a return air damper RD for controlling the amount of return air to the first chamber CH1 through a return air supply port 12, and an exhaust control means for adjusting the exhaust damper ED according to detection information given by a detection means for detecting the amount of the introduced outside air so that the amount of the exhausted air becomes approximately equal to that of the introduced outside air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air passage switching chamber unit used when constructing an air conditioning facility.

[0002]

2. Description of the Related Art In an air-conditioning facility, the circulating air-conditioning state in which the total amount of return air from the air-conditioning target area is adjusted by the air conditioner body and then supplied again to the air-conditioning target area, and the return air and the outside air from the air-conditioning target area are controlled. Partial return air that is mixed at a predetermined ratio and adjusted in the air conditioner body and then supplied to the air conditioning target area, and the entire amount of return air from the air conditioning target area is discharged to the outside, while outside air is supplied to the air conditioner body. Many forms are adopted in which the air conditioner is adjusted and then the outside air is supplied to the air conditioning target area according to the air conditioning conditions.
In the conventional technology that enables the adoption of such a form, the outside air introduction duct is connected to the return air duct from the air conditioning target area to the main body of the air conditioner so that the return air amount and the outside air amount meet and join. On the other hand, an exhaust duct to the outside is connected to the air supply duct from the air conditioner main body to the air conditioning target area so that the air supply amount and the exhaust amount are in a predetermined ratio, and the air volume in each duct is adjusted with a damper or the like. This is a technique for making the above three states appear by adjusting.

[0003]

However, according to the above-mentioned conventional technique, since the ducts are connected to each other, the mutual installation of the ducts is restricted, and the ventilation of each duct is maintained well. It is also necessary to maintain the desired duct performance, such as the fact that the duct equipment is congested due to an unreasonable increase in the number of bends in the duct or an unreasonably long length. This leads to an increase in the space required for the equipment, and as a result, not only is the duct equipment expensive and poor in workability, but it also restricts the installation of the air conditioner body in the machine room, and This has led to increased costs and reduced workability.
An object of the present invention is to make it possible to switch between a circulating air conditioning state, a partial return air conditioning state, and an all outside air conditioning state, without increasing the cost of the entire air conditioning facility and reducing the workability. .

[0004]

The air passage switching chamber unit of the present invention is characterized in that an outside air introduction port having an outside air damper for adjusting the amount of outside air introduced and an air supply port to the air conditioner body are formed. One chamber is provided, and a second chamber in which a return air inlet from the air-conditioning target area, an exhaust port to the outside, and a return air supply port to the first chamber are provided is provided to the outside via the exhaust port. An exhaust damper for adjusting the exhaust amount and a return air damper for adjusting the return air amount to the first chamber via the return air supply port are provided.

[0005]

[Function] The outside air introduction port is communicated with the outside through the outside air introduction duct or directly, the air supply port is communicated with the air conditioner body through the supply duct or directly, and the return air duct is returned through the return air duct or directly. The air intake port is communicated with the area to be air-conditioned, the exhaust port is communicated with the outside through the exhaust duct or directly, and in that state, the outside air damper, the exhaust damper, and the return air damper are appropriately adjusted to operate. You can reveal two states. More specifically, the outside air damper and the exhaust damper are both closed, while the return air damper is opened so that the entire amount of return air from the air conditioning target area is adjusted by the air conditioner main body, and then the air is again supplied to the air conditioning target area. The air-conditioning state can be displayed, and each damper is opened and its opening is adjusted to mix the return air from the air-conditioning target area and the outside air at a predetermined ratio and adjust the air-conditioner body, and then the air-conditioning target area. Partial return air air-conditioning condition can be revealed, and both the outside air damper and the exhaust damper are opened, while the return air damper is closed to exhaust all the return air from the air conditioning target area to the outside. After adjusting the outside air with the main body of the air conditioner, the entire outside air air-conditioning state in which air is supplied to the air-conditioning target area can be displayed. As a result, although the above three states can be appropriately expressed,
It is not necessary to connect ducts to each other, and moreover, ducts can be connected in one place. Moreover, since the exhaust control means is provided to make the outside air introduction amount and the exhaust amount equal or substantially equal, it is possible to maintain the pressure in the air conditioning target region constant or almost constant.

[0006]

As described above, according to the present invention, it is possible to bring out the three states while making the entire air conditioning equipment good in workability and inexpensive without causing congestion of the duct equipment and cost increase. In addition, it is possible to provide an air passage switching chamber unit that can achieve the improvement of the air conditioning performance by stabilizing the pressure in the air conditioning target area at the same time.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an air conditioner includes an air conditioner body 1, an air passage switching chamber unit 2, a total heat exchanger 3, and duct equipment. The air conditioner main body 1 has a connection chamber CI on the upper surface thereof with an air supply duct DI for supplying air SA adjusted to the interior area AI of the air conditioning target area A.
And an air supply duct 4I for connecting the interior air supply port 4I and the air supply SA adjusted to the perimeter area AP.
Air supply port 4P for the perimeter, which is connected to the exhaust air through the connection chamber CP, and return air RA and outside air OA from the air conditioning target area A
4 to 6, and has an air supply fan FSA for interior and perimeter as shown in FIGS. The air passage switching chamber unit 2 is mounted and fixed on the upper portion of the air conditioner body 1, and
As shown in FIG. 3, a first chamber CH1, a second chamber CH2, an outside air damper OD, an exhaust damper ED, a return air damper RD, and an exhaust control unit are provided. The first chamber CH1 has a rectangular shape in a plan view, and the second chamber CH2 has a size equal to that of the first chamber CH1.
It is L-shaped along the side, and the distribution chamber C is divided by the partition plate 5.
It is divided into two parts, hd and the exhaust chamber Che. The outside air introducing port 6 for connecting to the outside air introducing duct DO is formed on the side surface of the first chamber CH1, and the air conditioner main body 1 is provided on the bottom surface so as to supply the internal air to the air conditioner main body 1. Air supply port 7 for connecting to the receiving port 4 of
Are formed. Also, the distribution chamber section Ch of the second chamber CH2
A return air inlet 8 for connecting to the return air duct DR is formed on the side surface of d, and an exhaust port 9 for connecting to the exhaust duct DE is formed on the side surface of the exhaust chamber Che. A communication port 10 for communicating the exhaust chamber Che with the distribution chamber Chd is formed at 5. In addition, the first chamber C
On the boundary wall 11 between the H1 and the distribution chamber section Chd, the two are communicated, that is, the return air supply port 12 from the distribution chamber section Chd to the first chamber CH1 is formed. Outside air damper OD
Is for adjusting the opening of the outside air inlet 6 to adjust the amount of outside air introduced. The exhaust damper ED is for adjusting the opening of the communication port 10 to adjust the amount of exhaust to the outside via the exhaust port 9. Return air damper R
D is for adjusting the opening of the return air supply port 12 to adjust the amount of return air to the first chamber CH1 via the return air supply port 12. Therefore, as shown in FIG. 4, the air passage switching chamber unit 2 closes both the outside air damper OD and the exhaust damper ED, while opening the return air damper RD, so that the return air RA from the air conditioning target area A After adjusting the total amount with the air conditioner main body 1, the circulating air conditioning state in which air is supplied to the air conditioning target area again appears, and as shown in FIG.
By opening D, ED, and RD and adjusting the opening thereof, the return air RA from the air conditioning target area A and the outside air OA are mixed at a predetermined ratio and adjusted by the air conditioner main body, and then the air conditioning target area A is adjusted. A partial return air air-conditioning state is supplied, and the outside air damper OD and the exhaust damper ED are both opened while the return air damper RD is closed as shown in FIG. While the whole amount of the return air RA is discharged to the outside, the outside air OA is adjusted by the air conditioner main body 1 and then the entire outside air air conditioning state in which the air is supplied to the air conditioning target area A is displayed. An exhaust fan F is installed in the exhaust chamber Che. The exhaust control unit controls the exhaust damper ED so that the exhaust amount is equal to or substantially equal to the external air introduction amount based on the detection information from the external air introduction amount detection unit.
Is a means for adjusting and operating. First, the outside air introduction amount detecting means will be described. The outside air introduction amount detecting means measures the outside air introduction amount using the metering unit 20 as a connecting portion of the outside air introduction duct DO to the air passage switching chamber unit 2. Specifically, as shown in FIG. 2, a flap 21 that rotates according to the air volume is provided in the weighing unit 20, and the rotation angle θ of the flap 21 is
Is output as an outside air introduction amount by an encoder or the like. The exhaust control means is based on the following principle. << Principle >><1> The outside air introduction amount QI (m ³ / h) is determined by the rotation angle θ of the flap 21. <2> When the rotation speed of the exhaust fan F is constant, the exhaust amount QE (m ³ / h) is almost determined if the opening β of the exhaust damper ED is determined. <3> Therefore, if the relationship between the rotation angle θ of the flap 21 and the opening β of the exhaust damper ED is grasped, QI
= QE. <4> As a result, as shown in FIG. 7, if the rotation angle θ is detected and the opening β of the exhaust damper ED is controlled, QI = QE
Can be Then, specifically, as shown in FIG. 8, the actuator 22 that operates the exhaust damper ED is used.
And a controller 23 that controls the actuator 22 based on the rotation angle θ. The total heat exchanger 3 is the outside air OA.
And the exhaust gas EA are heat-exchanged.

[Other Embodiment] In the above embodiment, the exhaust chamber C
He, that is, the exhaust fan F is provided in the air passage switching chamber unit 2, but the exhaust fan F may be provided in the exhaust duct DE.

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 a perspective view showing a schematic configuration of air conditioning equipment.

FIG. 2 is a cross-sectional plan view of the air passage switching chamber unit.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is an air passage configuration diagram showing a circulating air conditioning state.

FIG. 5 is an air passage configuration diagram showing a partial return air conditioning state.

FIG. 6 is an air passage configuration diagram showing an all-outside air conditioning state.

FIG. 7 is a graph showing the relationship between the flap rotation angle θ and the exhaust damper opening β.

FIG. 8 is a control block diagram.

[Explanation of symbols]

 OD Outside air damper 6 Outside air introduction port 1 Air conditioner body 7 Air supply port CH1 1st room A Air conditioning target area 8 Return air inlet 9 Exhaust port 12 Return air supply port CH2 2nd room ED Exhaust damper RD Return air damper

Claims (1)

[Claims] 1. An outside air damper (OD) for adjusting the amount of outside air introduced.
A first chamber (CH1) in which an outside air inlet (6) provided with and an air supply port (7) to the air conditioner body (1) are formed,
Return air inlet (8) from the air conditioning target area (A), exhaust port (9) to the outside, and return air supply port (1) to the first chamber (CH1)
2) is formed, and an exhaust damper (ED) for adjusting the amount of exhaust to the outside through the exhaust port (9) and the return air supply port (12). Based on the return air damper (RD) for adjusting the return air amount to the first chamber (CH1) and the detection information from the means for detecting the outside air introduction amount, the exhaust amount is equal to or almost equal to the outside air introduction amount. An air passage switching chamber unit provided with exhaust control means for adjusting and operating the exhaust damper (ED) so as to be equal.