JPH05177152A - Air purification unit - Google Patents

Abstract

(57) [Summary] [Structure] On the front surface of the service door 1b, the electrical component box 10 of the electrostatic precipitating element 9 is arranged. [Effect] Since the electrical equipment box 10 can be projected into the maintenance work space S which has been set conventionally, the air cleaning unit 1 and the other air conditioning unit 2 can be directly connected at the time of installation. Moreover, since the casing 1a itself does not need to be modified in designing the electrical equipment box 10, there is an advantage that the casing 1a can be prevented from being upsized and its implementation becomes extremely easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaning unit, and more particularly to an air cleaning unit that is connected to another air conditioning unit as an air conditioning unit of a ceiling-embedded air conditioner.

[0002]

2. Description of the Related Art Generally, an air conditioner for air conditioning in a room is constructed by connecting an air conditioning unit, an air cleaning unit, etc. Among them, a ceiling embedded type is, for example, a conventional type. An air conditioner A having the configuration shown in FIG. 3, which is a schematic plan view, has been proposed (see Japanese Patent Laid-Open No. 2-284654).

In this structure, the air cleaning unit 1 to which the suction duct 3 is connected and the fan chamber 2 as another air conditioning unit to which the blowout duct 4 is connected are provided. The air cleaning unit 1 and the fan. The chamber 2 is connected by a connection duct 5. In the casing 1a of the air cleaning unit 1, a plurality of electric dust collecting elements 9 (only one is shown in FIG. 3) are housed along the longitudinal direction thereof, and these electric dust collecting elements 9 are connected in series. Are separably connected to each other. Further, in order to put the electrostatic precipitating element 9 in and out of the casing 1a, element inlets and outlets 1c which are opened and closed by the service door 1b are formed on both sides of the casing 1a. A predetermined maintenance work space S is secured in front of the service door 1b.

The electrostatic precipitator element 9 includes an ionization section 9a for charging positive dust to dust particles in the air, and a dust collection section 9b for collecting and accumulating the charged dust particles. In order to supply power to the ionization section 9a and the dust collecting section 9b, the casing 1a is provided with an electrical component box 10 adjacent to the side surface of the connection duct 5.

[0005]

In order to downsize the air conditioner A, it is preferable to eliminate the connection duct 5 and directly connect the air cleaning unit 1 and the fan chamber 2. However, in the above-described conventional configuration, since the electrical component box 10 adjacent to the side surface of the connection duct 5 is disposed in the casing 1a, the air cleaning unit 1 and the fan chamber 2 are provided by the size of the electrical component box 10. It was not possible to abolish the connecting duct 5 as a result of the need to space it between

Further, the electrical component box 10 is installed in the casing 1.
Although it may be incorporated in a, in that case, it is necessary to secure a space for housing the electrical component box 10 without changing the opening area of the air flow passage, and as a result, the casing of the air cleaning unit 1 is obtained. There is a problem that 1a becomes large. The present invention has been made in view of the above problems, and an object of the present invention is to provide an air cleaning unit that can be directly connected to another unit without increasing the size of the casing.

A further object of the present invention is to provide an air cleaning unit which has a simple structure and which can operate the safety switch of the power supply in accordance with the opening operation of the service door.

[0008]

In order to solve the above-mentioned problems, an air purification unit of the present invention is an electric dust collecting element for purifying air introduced from a room, and a casing for accommodating the electric dust collecting element in a retractable manner. , And a service door that opens and closes the element inlet / outlet of the casing, and is installed in the ceiling by being connected to another air conditioning unit in a state where a predetermined maintenance work space is secured in front of the service door. In the air cleaning unit, the electric component box of the electrostatic precipitating element is arranged in front of the service door.

The electrical equipment box may be provided with a safety switch for controlling power supply to the electrostatic precipitating element.

[0010]

According to the air cleaning unit of the present invention having the above-mentioned structure, the electrical equipment box is disposed in front of the service door. Therefore, at the time of installation, the maintenance work space where the electrical equipment box is conventionally provided is provided. It can be projected inward. Further, a safety switch for controlling power supply to the electrostatic precipitator element is provided in either one of the electrical component box and the casing, and the other safety switch is operated in association with the opening / closing operation of the service door. In the case where the operation member is provided, when the service door is closed, the safety switch can be operated by the operation member to supply power to the electrostatic precipitating element. On the other hand, when the service door is opened, the safety switch and the operating member are separated from each other, so that the electricity collecting element is not supplied with power.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an air conditioner A employing an air cleaning unit 1 according to an embodiment of the present invention.
It is a perspective view showing a usage state of. Referring to the figure, this air conditioner A is of a ceiling-embedded type and serves as another air conditioner unit in which an air purifying unit 1 of the present invention to which a suction duct 3 is connected and a blowout duct 4 are connected. The fan chamber 2 of FIG.

The air conditioner A is provided on the back side of the ceiling 8 with the air inlet 3a of the intake duct 3 and the air outlet 4a of the outlet duct 4 facing the room through the opening of the ceiling 8. ing. The air purifying unit 1 and the fan chamber 2 are each set to be long in a direction orthogonal to the air passage B from the suction duct 3 to the blowout duct 4, and both of them are provided with a bolt 7 or the like (not shown). Is hung on.

The casing 1a of the air cleaning unit 1
A plurality of electrostatic precipitating elements 9 are accommodated in the inside thereof and are connected in series so as to be separable from each other. The electric dust collecting element 9 is installed in the casing 1
In order to put it in and out of a, the casing 1a has
Element doorway 1 opened and closed by service door 1b
c (illustrated only in FIG. 2) is formed.

Referring to FIG. 2, the service door 1b is
One side is connected to the casing 1 a via a hinge 12. The casing 1a is provided at the other end of the service door 1b.
Insertion hole 1 into which the bolt 13 projecting from the facing surface of the
4 is drilled. The service door 1b can be fixed to the casing 1a and the side portion of the casing 1a can be closed by screwing a nut (not shown) into the bolt 13 in a state where the bolt 13 is fitted in the fitting hole 14. At the same time, by screwing a nut (not shown) from the bolt 13, the service door 1b can be opened and the side portion of the casing 1a can be opened.

Referring to FIG. 1, a predetermined maintenance work space S is secured in front of at least one of the service doors 1b according to the construction conditions of the air conditioner A. An opening 8a for maintenance work is provided in a portion of the ceiling plate 8 facing the maintenance work space S. The opening 8a is opened and closed by attaching and detaching the lid 8c with the screw 8b, and when opening, the electric dust collecting element 9 is removed or inserted into the ceiling.

In the above-mentioned structure, the electrical equipment box 10 is fixed to the front surface of the service door 1b of the air cleaning unit 1 of this embodiment. Referring to FIG.
The electrical equipment box 10 is provided with a limit switch SW as a safety switch. A rod-shaped operating member W2 for operating the lever W1 of the limit switch SW is fixed to the casing 1a side,
As shown by the arrow X from the state of FIG. 2, when the service door 1b is rotated about the hinge 12 in the closing direction and the bolt 13 is fitted into the fitting hole 14, the operation member W2 moves the lever W1 of the limit switch SW. Power is supplied by pressing and closing the limit switch SW, and at the same time as shown in FIG. 2 from the state of FIG.
When b is opened, the limit switch SW is separated from the operation member W2, so that the limit switch SW is opened and the power supply can be cut off.

According to the air cleaning unit 1 having the above structure,
By arranging the electrical component box 10 on the front surface of the service door 1b, the electrical component box 10 can be projected into the maintenance work space S that has been conventionally set. The other air conditioning unit 2 can be directly connected. As a result, the overall size of the air conditioner A that employs the air cleaning unit 1 of this embodiment can be reduced.

Moreover, since the casing 1a itself does not need to be modified in designing the electrical component box 10, it is possible to prevent the casing 1a from increasing in size and to make the implementation extremely easy. is there. Further, in the present embodiment, the safety switch SW for controlling the power supply to the electric dust collecting element 9 is provided in the electrical component box 10.
And the service door 1 on the casing 1a.
Since the operation member W2 for operating the safety switch SW in accordance with the opening / closing operation of b is provided, the safety switch SW can be operated in accordance with the opening / closing operation of the service door 1b, and as a result, maintenance work can be performed safely. There is an advantage that you can.

The above-described embodiment is merely a preferred embodiment of the present invention. For example, the safety switch SW is provided on the casing 1a and the operation member W2 is provided on the service door 1b, or another unit is used. Needless to say, an air controller or a heat exchange unit may be connected, and various design changes can be made without departing from the scope of the present invention.

[0020]

As described above, according to the air cleaning unit of the present invention, by disposing the electrical component box on the front surface of the service door, the electrical component box can be installed in the maintenance work space which is conventionally set. Since it can be projected, the remarkable effect that the air cleaning unit and another air conditioning unit can be directly connected at the time of installation. As a result, the size of the entire air conditioner that employs the air cleaning unit of the present invention can be reduced.

In addition, since there is no need to change the design of the casing itself when arranging the electrical component box, it is possible to prevent the casing from becoming large, and it is very easy to implement. Further, in the case where a safety switch for controlling power supply to the electric dust collecting element is provided in the electrical equipment box, the safety switch can be operated in accordance with the opening / closing operation of the service door, resulting in maintenance work. Has the advantage that it can be done safely.

[Brief description of drawings]

FIG. 1 is a perspective view of a ceiling-embedded air conditioner that employs an air cleaning unit according to an embodiment of the present invention.

FIG. 2 is a partially cutaway plan view showing a state in which an electric component box is provided on a service door of the air cleaning unit.

FIG. 3 is a schematic plan view of a ceiling-embedded air conditioner that employs a conventional air cleaning unit.

[Explanation of symbols]

 A Air conditioner 1 Air cleaning unit 1a Casing 1b Service door 1c Element entrance / exit 10 Electrical equipment box S Maintenance work space SW Limit switch

Claims (2)

[Claims] 1. An electrostatic precipitator element (9) for purifying air introduced from a room, a casing (1a) for accommodating the electrostatic precipitator element (9) in a freely retractable manner, and an element inlet / outlet port (1c) of the casing (1a). ) Including the service door (1b) that opens and closes the other air conditioning unit (2) with a predetermined maintenance work space (S) in front of this service door (1b).
In the ceiling-embedded air cleaning unit (1) that is connected to the above and is installed in the back of the ceiling, the electrostatic precipitating element
An air purification unit comprising the electrical component box (10) of (9). 2. The air cleaning unit according to claim 1, wherein a safety switch (SW) for controlling power supply to the electric dust collecting element (9) is arranged in the electric equipment box.