JPH0938523A - Ceiling embedding type air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure in which the maintenance work can be carried out more easily for a ceiling embedding type air cleaner. SOLUTION: A maintenance door 8 is set on a surface facing the indoor space side of an air cleaner. The maintenance door 8 is pivotal on a body 4, and is hung down from the body 4 to the indoor space almost vertically in the state of being opened. At least a dust collecting section of an electric dust collecting element 14 is installed removably on a rear face 13 of the maintenance door 8. Also a sterilization lamp 15 is installed thereon. Air is flowed from the surface of the door 8 through the rear face, and a louver structure is formed on the door 8 for the purpose of preventing the leakage of light of the sterilization lamp 15 set on the rear face of the door 8 to the indoor side. The air passing through the maintenance door 8 is introduced to the electric dust collecting element 14 by the louver structure, and the sterilization lamp 15 is designed not to be struck by air flow. The maintenance work is easy, and the light of the sterilization lamp is not leaked to the indoor, and the lamp is scarcely soiled to make the service life of an air cleaner longer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called ceiling-embedded air purifier in which an air purifier body is arranged in a ceiling space, and an air intake port and an air discharge port are arranged along the ceiling surface. is there.

[0002]

2. Description of the Related Art As an air purifier installed in a house or a pachinko parlor, there is known a ceiling-embedded air purifier in which a main body is embedded in a ceiling space and an air intake and exhaust grill is arranged on the ceiling surface. Is. As a structure of this type of air cleaner, an interesting prior art to the present invention is disclosed in Japanese Patent Application Laid-Open No. 3-127640, which is a prior application of the present applicant. The air purifier disclosed in this publication is provided with a frame-shaped frame for holding a plurality of dust collecting elements. Then, the frame-shaped frame can be swung from the casing to the indoor space side.

In the air cleaner described in the above publication, when the dust collecting element is replaced, the dust collecting element can be taken out into the indoor space while being held by the frame, so that the dust collecting element can be easily replaced or maintained. There is an advantage.

[0004]

By the way, in the maintenance work of the air purifier, generally, the work of replacing the entire electrostatic precipitating element, only the collecting part of the electrostatic precipitating element (that is, leaving the ionization part as it is) is performed. , The dust collecting part only) and the sterilizing lamp is provided, and the sterilizing lamp is replaced and cleaned. Among them, in particular, the dust collecting part needs to be replaced or cleaned in a relatively short period of time as compared with the ionization part due to its property.

The present invention has been made based on such a background, and an improved ceiling-embedded air purifier that is easier to perform maintenance than the conventional air purifier described in the above publication is improved. The purpose is to provide.

[0006]

According to the first aspect of the present invention,
Ceiling-embedded type including a main body having an electric dust collecting element arranged in the ceiling space, and a maintenance door provided on the surface of the main body facing the indoor space side, rotatable to the indoor space, and allowing air to pass therethrough In the air purifier, the ceiling-embedded air purifier is characterized in that at least the dust collecting portion of the electric dust collecting element is detachably attached to the back surface of the maintenance door that faces the inside of the main body when closed. is there.

According to this structure, the electrostatic precipitator element is attached to the rear surface of the maintenance door, that is, the surface facing the inside of the main body when the maintenance door is closed. The electric dust collecting element includes an ionization unit and a dust collecting unit, and at least the dust collecting unit is detachable. Therefore, when the maintenance door is opened, the rear surface of the door appears in the indoor space so as to hang from the main body, and the electrostatic precipitating element to be maintained is attached thereto. Therefore, the dust collecting portion can be replaced relatively easily.

Further, maintenance work includes replacement of only the dust collecting portion, replacement of the entire electric dust collecting element including the dust collecting portion and the ionization portion, and the like, regardless of the type of work.
Any maintenance work can be done easily. According to a second aspect of the present invention, in the ceiling-embedded air cleaner according to the first aspect, a sterilizing lamp is further provided, and the sterilizing lamp is detachably attached to the back surface of the maintenance door. The feature is a ceiling-embedded air purifier.

According to this structure, the sterilizing lamp which is the object of the maintenance work is also attached to the back surface of the maintenance door. That is, the objects to be maintained are intensively attached to the back surface of the maintenance door. Therefore, the maintenance target including the sterilization lamp can be easily replaced and cleaned. At that time, the worker can work sideways, and does not have to face upwards, which is the ceiling surface side, and the work is easy.

According to a third aspect of the present invention, in the ceiling-embedded air cleaner according to the second aspect, the maintenance door has a louver structure for preventing light of the sterilization lamp from leaking to the indoor space side. It is a ceiling-embedded air purifier characterized by being provided. According to this structure, the air passes through the maintenance door and the light of the sterilization lamp does not leak to the indoor side. Therefore, the user does not have to worry about the eyes being damaged by the light of the germicidal lamp.

The invention described in claim 4 is the invention according to claim 2 or 3.
In the above-described ceiling-embedded air purifier, the sterilization lamp is attached to a rear surface of the maintenance door at a position avoiding an air passage, and is a ceiling-embedded air purifier. According to this structure, the sterilizing lamp is not exposed to the flow of the air sucked into the air purifier, and the surface of the sterilizing lamp is unlikely to get dirty. Also,
The life of the germicidal lamp is extended.

[0012]

1 is a perspective view showing the external configuration of a ceiling-embedded air cleaner according to an embodiment of the present invention. The air purifier 1 according to this embodiment has a decorative frame 3 attached to an opening (not shown) formed in the ceiling plate 2.
And a main body 4 arranged in the ceiling space above the ceiling plate 2.

In the decorative frame 3, a large decorative door 5 having a substantially horizontal plane is arranged at the center thereof. The decorative door 5 is provided with a suction grill 6 for sucking air into the main body 4. Four outlets 7 are arranged around the makeup door 5. The air sucked from the suction grill 6 is purified in the main body 4 and blown into the indoor space from the air outlet 7 as described later.

FIG. 2 is a makeup door 5 of the air purifier shown in FIG.
It is a perspective view showing a state in which the maintenance door 8 is opened. One side 9 of the decorative door 5 is rotatably connected to the decorative frame 3 by, for example, a spindle (see 34 in FIG. 3 described later). A lock device (not shown) is provided on the side of the other side 10 of the decorative door 5 that faces the one side 9. When the decorative door 5 is closed as shown in FIG. 1, the lock device provided on the other side 10 side engages with the decorative frame 3, and the closed state of the decorative door 5 is maintained.

On the other hand, when the lock device (not shown) of the decorative door 5 is released, the decorative door 5 rotates about one side 9 and opens from the decorative frame 3 so as to hang substantially directly below, as shown in FIG. The back side of the decorative door 5 (when the decorative door 5 is closed, the main body 4
The pre-filter 17 is attached to the surface (facing the side). The pre-filter 17 has a suction port 7 (see FIG. 1).
It is for removing relatively large dust from the air sucked from the.

When the makeup door 5 is opened, a maintenance door 8 appears behind it. Maintenance door 8 has one side 1
1 is rotatably attached to the main body 4 by, for example, a spindle (see 35 in FIG. 3). A lock device (not shown) is provided on the side of the other side 12 of the maintenance door 8 that faces the one side 11. In a substantially horizontal state where the maintenance door 8 is closed, the opposite side 12 of the maintenance door 8 is engaged with the main body 4 by the lock device. On the other hand, when the lock device is released, as shown in FIG. 2, the maintenance door 8 rotates about one side 11 and is in an open state in which the maintenance door 8 hangs substantially directly below the main body 4.

When the maintenance door 8 is opened, the back surface 13 of the door, which has been exposed to the inside of the main body 4 when it is closed, appears. Back side of this door 1
On top of the 3 is, for example, two electrostatic precipitating elements 14,
A germicidal lamp 15 arranged in the center of the two electrostatic precipitator elements 14 is attached. When the maintenance door 8 is opened, the ozone decomposition catalyst panel 16 appears inside the main body 4. A blower fan described later is provided inside the panel 16.

FIG. 3 is a schematic sectional view for explaining the internal structure of the air cleaner 1. In FIG. 3, the makeup door 5 and the maintenance door 8 are in a closed state. The air sucked from the suction grill 6 of the decorative door 5 passes through the pre-filter 17 and the air passage (described later in detail) formed in the maintenance door 8, and passes through the electrostatic precipitator element 1.
4 given. While passing through the element 14, fine dust in the air is removed. More specifically, the electrostatic precipitator element 14 includes an ionization section and a precipitator, as will be described later. Then, a negative voltage is usually applied to the ionization section, which charges the dust in the air to a negative potential and generates ozone. The negatively charged dust is collected by the dust collector. Further, the ozone can kill the collected bacteria and bacteria in the air by irradiating with ultraviolet rays. Then, after the ozone component generated in the electrostatic precipitator element 14 is removed through the ozone decomposition catalyst panel 16, the ozone component passes through the air passage 18 and is blown out from the air outlet 7 into the indoor space.
This air flow is generated by the rotation of the fan 19 provided inside the ozone decomposition catalyst panel 16.

Reference numeral 36 indicates an electrical equipment box. FIG. 4 is a sectional view taken along line IV-IV in FIG. FIG. 4 shows the structure of the maintenance door 8 and the electrostatic precipitator element 1 arranged on the back surface 13 of the maintenance door 8.
4 and the germicidal lamp 15 are shown. The maintenance door 8 has a louver structure including a door frame 20 forming the outer periphery of the door and a large number of blades 21 arranged on the door frame 20. The large number of blades 21 are long thin plates extending in the direction orthogonal to the paper surface in FIG. The space between the large number of blades 21 is an air passage through which air can pass from the lower side to the upper side in FIG. A large number of wing boards 2 arranged almost in parallel
1 is an electrostatic precipitator element arranged on both the left and right sides of the back side (upper side in FIG. 4) of the maintenance door 8 by distributing the air flow coming from the front side (lower side in FIG. 4) of the maintenance door 8 to the left and right sides. Lead to 14. In other words,
The sterilizing lamp 15 arranged in the center of the rear surface side of the maintenance door 8 is set so that the air passing through the maintenance door 8 is hardly hit. As a result, the sterilization lamp 15 is less likely to be contaminated with dust or the like contained in the airflow. The sterilization lamp 15 is, for example, an ultraviolet lamp, and its outer side is constituted by a glass tube, like a fluorescent lamp. Therefore, the lamp life is extended when the wind or the like does not hit the glass tube. This is the germicidal lamp 1
5 is also preferable for improving the life.

Furthermore, the large number of blades 21 are used for the sterilization lamp 1.
The light emitted from 5 passes through the maintenance door 8 and is prevented from leaking from the surface side (lower side in the figure). For this reason, each blade 21 is angled so as to block the light of the germicidal lamp 15. Therefore, the light emitted from the sterilization lamp 15 cannot pass through the ventilation path between the blades 21 and 21 and does not leak to the surface side of the maintenance door 8. As a result, even if the maintenance door 8 is looked up from the front surface side of the maintenance door 8, that is, the indoor space side, sterilizing light (for example, ultraviolet light) does not leak from the maintenance door 8, so that the user can see with the ultraviolet light or the like. There is no worry of damaging it.

In this embodiment, the above function is realized by a louver having a large number of blades 21 having a curved cross section. The curved shape of the blade of this louver structure is an example, and the above-described function can be realized even if the blade has another shape, for example, the blade 21 is not curved. FIG. 5 is a diagram for explaining how to perform maintenance work on this air purifier. At the time of maintenance work, as shown in FIG. 5, the makeup door 5 and the maintenance door 8 are opened. At the time of opening, the decorative door 5 and the maintenance door 8 are in a state of hanging substantially vertically downward from the decorative frame 3 or the main body 1 as described above. Therefore, the back surface 13 of the maintenance door 8
The side appears almost vertically in the indoor space. Then, on the back surface 13 of the maintenance door 8, as described above, the electrostatic precipitating element 14 and the sterilizing lamp 15 which are the objects of maintenance are attached.

Therefore, the worker is
For example, only the dust collecting portion of the electric dust collecting element 14 is removed from the back surface 13 of the door. This removal work can be performed by the operator in a horizontal direction. That is, it is not necessary to face the ceiling side, and the work can be performed in a posture facing the back surface 13 of the maintenance door 8 that hangs substantially vertically. Therefore, it is easy to remove the dust collecting part.

If the object to be maintained is the entire electric dust collecting element 14, the entire electric dust collecting element 14 may be removed. Alternatively, if the maintenance target is the sterilization lamp 15, the sterilization lamp 15 may be removed. This removal can be performed, for example, by replacing a normal fluorescent lamp. Even in this case, since the sterilizing lamp is attached to the back surface 13 of the maintenance door 8 which is substantially vertically hanging, the sterilizing lamp 1 can be operated in a horizontal state without looking up at the ceiling.
5 is easy to replace.

FIG. 6 shows the dust collecting portion 22 from the electric dust collecting element 14 attached to the back surface 13 of the maintenance door 8.
It is a figure explaining the work which removes. The electrostatic precipitator element 14 includes an ionization section 24 attached to the back surface 13 of the maintenance door 8 by, for example, an attachment screw 23.
And the dust collecting part 22 fitted in the ionizing part 24. The dust collecting portion 22 is fixed by so-called one-touch pins 26 to mounting plates 25 arranged at both upper and lower ends of the ionizing portion 24. Therefore, the dust collecting part 22
When removing, the one-touch pin 26 may be removed and the dust collecting part 22 may be removed from the ionizing part 24.

In this embodiment, the ionization section 24
The dust collecting section 22 and the dust collecting section 22 have the following structures. The ionization unit 24 includes a large number of flat plates 27 arranged in parallel at regular intervals. The lower side of each flat plate 27 (Fig. 6
A large number of discharge protrusions 28 are formed on the right side of the side facing the maintenance door 8. The large number of flat plates 27 are held by, for example, two holding bars 29. A high voltage is applied to the holding rod 29 from a high voltage generator (not shown). As a result, a high voltage is applied to each flat plate 27 through the holding rods 29, discharge is performed from each discharge protrusion 28, and dust particles in the air are charged. Mounting plates 25 for mounting the dust collecting unit 22 are provided at the upper and lower ends of the ionizing unit 24.

On the other hand, the dust collecting part 22 is provided with a large number of flat plates 30 arranged in parallel at regular intervals. Many flat plates 30
The upper side is supported by two support bars 31 in a so-called cantilever state, and a constant parallel distance is maintained. The flat plates 30 at both ends of the dust collecting unit 22 are attached to the mounting plates 2 of the ionizing unit 24
The flange 32 facing 5 is formed. A locking hole 33 is formed in the flange 32. Further, locking holes are also formed in both end mounting plates 25 of the ionization section 24. When the flange 32 and the mounting plate 25 are fitted to each other and the one-touch pins 26 are fitted to both locking holes, the dust collecting portion 22 can be attached to the ionization portion 24.

At this time, a large number of flat plates 30 of the dust collecting section 22 are arranged in a non-contact state between a large number of flat plates of the ionization section 24. That is, a large number of flat plates of the ionization unit 24 and a large number of flat plates 30 of the dust collection unit 22 are alternately arranged. Dust collection unit 2
When 2 is attached to the ionization section 24, the dust collecting section 22 is charged by applying a predetermined voltage from an electric circuit (not shown). Therefore, the flat plate 30 electrically adsorbs the charged dust particles. Since the principle of such an electrostatic precipitator element is already known, detailed description thereof is omitted here.

In this embodiment, in the dust collecting portion 22, for example, the flat plate 30 and the support rod 31 are all made of aluminum. Therefore, after the dirty dust collecting portion is removed from the ionization portion 24, when the dust collecting portion 22 is recycled, it is made of the same material, which is advantageous in that it can be easily recycled. Ionizer 24 and dust collector 22
The connecting structure between and can be realized by a method using an elastic holder as described below, instead of the method using the one-touch pin 26 described above.

FIG. 7 shows an ionization section 2 using an elastic holder.
4 is a perspective view for explaining a connection structure between the dust collecting part 22 and the dust collecting part 22. FIG. The ionization part 24 is provided with a large number of flat plates 27 arranged in parallel at regular intervals as in the case shown in FIG. 6, and mounting plates 25 are provided at both ends thereof. Notches are formed on the upper side of the mounting plate 25 on both left and right sides, and the bent portion 41 is formed.
Is formed, and the elastic holder 40 is attached thereto.

FIG. 8 is a perspective view showing the structure of the elastic holder 40 attached to the bent portion 41. The elastic holder 40 includes a fixed portion 42 attached to the bent portion 41.
And a pair of opposed plates 43 that rise upward from both ends of the fixed portion 42. A curved portion 44 is formed in the middle of the facing plate 43 so as to bulge outward. The support rod 31 of the dust collecting portion 22 is elastically received between the bent portions 44.

Returning to FIG. 7, in the dust collecting portion 22, as in the structure of FIG. 6, a large number of flat plates 30 arranged in parallel at regular intervals.
Is provided. A large number of flat plates 30 are supported in a so-called cantilever state on the upper side by a support rod 31, and a constant parallel spacing is maintained. In the dust collecting part 22 shown in FIG.
The support rod 31 is configured by a single U-shaped curved rod. A part of the support rod 31 is fitted to the elastic holder 40 described above, and the dust collecting part 22 is attached to the ionizing part 24.

The dust collecting part 22 shown in FIG.
And if the support bar 31 is made entirely of aluminum,
It has the advantage of being easy to recycle. In the embodiment described above, the maintenance door has been described as an example in which the maintenance door is opened so as to pivot into one of the indoor spaces around one side of the door. However, in addition to such a configuration, the maintenance door may be a so-called double door that opens to the indoor space. In this case, it suffices to arrange the electrostatic precipitating element, the sterilizing lamp, and the like to be maintained, on the back side of each maintenance door (the side facing the inside of the main body when closed).

The configuration of the electrostatic precipitating element, that is, the configurations of the ionization section 24 and the dust collecting section 22 are not limited to the above-mentioned ones, but may be other configurations. The structure of the sterilization lamp may be different from that of the embodiment, and may be, for example, a spherical lamp such as an electric lamp.

[0034]

According to the invention of claim 1, at the time of maintenance work, it is possible to open the maintenance door and remove only the object to be maintained arranged on the back surface of the door, for example, the dust collecting portion of the electrostatic precipitating element. . Therefore, it is possible to provide a ceiling-embedded air cleaner that facilitates maintenance work.

Particularly, at the time of maintenance work, since the maintenance door is opened in a state of being hung in the indoor space, it is very easy to remove or clean the maintenance target object provided on the back side of the maintenance door. According to the second aspect of the invention, the sterilization lamp which is the maintenance target is also attached to the back side of the maintenance door, and the sterilization lamp can be easily replaced and cleaned.

In the third aspect of the present invention, the maintenance door has a structure that allows air to pass through but does not allow the light of the sterilization lamp to leak to the inside of the room. Therefore, during use, the light of the sterilization lamp does not leak to the inside of the room, so that the user does not have to worry about the injury of the light of the sterilization lamp. In the invention according to claim 4, the air passing through the maintenance door does not hit the germicidal lamp. Therefore, the germicidal lamp is less likely to be contaminated with dust or the like contained in the air, and the life of the germicidal lamp is extended.

[Brief description of drawings]

FIG. 1 is an external view of a ceiling-embedded air cleaner according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which a makeup door and a maintenance door of the air cleaner are opened.

FIG. 3 is a schematic sectional view for explaining an internal structure of the air cleaner.

FIG. 4 is a view showing a structure of a maintenance door and an arrangement relationship of an electric dust collecting element and a sterilizing lamp in the air purifier.

FIG. 5 is a diagram for explaining how to perform maintenance work in the air cleaner.

FIG. 6 is a diagram illustrating a state in which only the dust collecting unit is removed from the ionization unit in the electric dust collecting element.

FIG. 7 is a diagram for explaining another coupling structure of an ionization section and a dust collection section.

FIG. 8 is a view showing an example of an elastic holder used in the above-mentioned coupling structure.

[Explanation of symbols]

 1 Air Purifier 4 Main Body 8 Maintenance Door 13 Door Back 14 Electrostatic Dust Collection Element 15 Sterilization Lamp 20 Door Frame 21 Feather Plate 22 Dust Collection Section 24 Ionization Section

Claims (4)

[Claims] 1. A main body (4) having an electrostatic precipitator element (14) arranged in a ceiling space, and a surface of the main body (4) facing the indoor space side, rotatable to the indoor space, and , A ceiling-embedded air purifier (1) including a maintenance door (8) through which air can pass, the back surface (13) of the maintenance door (8) facing the inside of the main body (4) when closed Dust collection element (14)
At least the dust collecting part (22) is detachably attached to the ceiling-embedded air purifier (1). 2. The ceiling-embedded air cleaner (1) according to claim 1, further comprising a sterilization lamp (15), the sterilization lamp (15) being provided on a rear surface of the maintenance door (8). 1
A ceiling-embedded air purifier (1), which is detachably attached to (3). 3. The ceiling-embedded air cleaner (1) according to claim 2, wherein the maintenance door (8) has the germicidal lamp (1).
A ceiling-embedded air cleaner (1), which is provided with a louver structure for preventing the light of 5) from leaking to the indoor space side. 4. The ceiling-embedded air cleaner (1) according to claim 2 or 3, wherein the sterilization lamp (15) is provided on a rear surface (1) of a maintenance door.
3) The ceiling-embedded air purifier (1), which is installed at a position avoiding an air passage.