JP3063609B2 - Ceiling-mounted air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted air conditioner.

[0002]

2. Description of the Related Art In a conventional ceiling embedded type air conditioner (for example, Japanese Patent Application Laid-Open No. 6-307666), a suction port and an air outlet are formed in a lower panel of a casing embedded in a ceiling surface, and an air filter is formed in the casing. After installing the heat exchanger and the cross flow fan, the air sucked from the suction port by the negative pressure generated by the cross flow fan is passed through an air filter to remove dust, and heat is exchanged by the heat exchanger. ,
It blows out from the outlet to the room.

[0003]

When the above-described conventional ceiling-mounted air conditioner is installed in a room where oil smoke is generated, such as a kitchen, the oil particles contained in the suction air are finer than dust, so Most passes through the air filter and adheres to the heat exchanger, reducing its heat exchange capacity. In this case, if the adhesion distribution of the oil particles varies, the heat exchange capacity differs depending on the location of the heat exchanger, so that air having a temperature difference downstream of the heat exchanger is mixed and dew condensation occurs. In addition, the oil particles contaminate not only the heat exchanger but also equipment such as a fan disposed inside the casing and the air passage, so that the performance of the air conditioner is reduced, such as a reduction in the amount of air blown out. It is difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and has as its object to remove the oil particles of the intake air before heat exchange, thereby lowering the heat exchange capacity and reducing condensation. An object of the present invention is to provide a ceiling-embedded air conditioner that can prevent problems such as occurrence beforehand. In addition, we secure compactness of air conditioner in having the function,
In addition, the object is to facilitate maintenance work and improve handling.

[0005]

The ceiling-embedded type air conditioner according to the present invention is provided with an air filter that collects dust from the intake air inside the casing, so that the intake air is removed more than the heat exchanger.
An oil guard filter 8 for collecting oil particles is provided on the upstream side.
A ceiling-mounted air conditioner installed separately from the air filter 6
In addition, the suction port 3 on the lower surface of the casing 1 is rotated downward.
A suction grille 5 is provided as much as possible, and
Panel 5 has a panel-shaped oil guard filter 8 on the back side
And one side of the periphery of the oil guard filter 8
A locking piece 9 for locking on the back side of the suction grill is protruded, and is provided on the other side.
Locks on the back of the suction grille and unlocks when elastically deformed
A flexible piece 10 which protrudes in the direction
10 is provided with a handle 12 extending to the downstream side of the suction air.
When the suction grille 5 rotates downward,
In the oil guard filter 8, the locking pieces 9 on the side
In addition, the present invention is characterized in that the flexible piece 10 is located on the lower side .

When the ceiling-mounted air conditioner is installed in a room where oil smoke is generated, the suction air flows into the heat exchanger after oil particles are removed by the oil guard filter 8, so that the suction air flows into the heat exchanger. No oil particles adhere and its heat exchange capacity is maintained. Further, oil particles do not adhere to devices such as the cross flow fan and the air passage in the casing 1. Also above
The well-mounted air conditioner has a panel-shaped oil guard filter.
Since the filter 8 is disposed on the back of the suction grill 5, oil
Even if the guard filter 8 is installed, the panel
Is formed thinly. In addition, this ceiling-mounted air conditioning
After the suction grill 5 is opened, the flexible piece 10 is
Deform it and remove it from the back of the suction grille,
If the ruta 8 is displaced, the locking piece 9 comes off from the back of the suction grill
Therefore, the oil guard filter 8 is removed from the suction grill 5
Removed. The oil guard filter 8 is also operated in the reverse order
Is attached to the suction grill 5. This ceiling-mounted air conditioning
In the machine, the handle 12 is provided with the suction air of the oil guard filter 8.
Because it is located on the downstream side, oil particles are
Does not adhere. Moreover, with this ceiling-mounted air conditioner,
The handle 12 of the flexible piece 10 is arranged at a lower position in the height direction
Therefore, installation and removal work of oil guard filter 8
Is easy.

[0007] ceiling embedded type air conditioner according to claim 2,
In the first aspect , the flexible piece 10 is characterized by being formed by a protruding piece having flexibility and extending substantially in an L-shape from the periphery of the oil guard filter 8.

In this ceiling-embedded air conditioner, the tip of the protruding piece is elastically deformed with the base end as a fulcrum.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The following is a detailed description of a specific embodiment of a ceiling-mounted air conditioner of the present invention, with reference to the drawings. FIG. 1 shows an embodiment of the present invention,
It is a perspective view of the indoor unit of a ceiling embedded type air conditioner.

In FIG. 1, reference numeral 1 denotes a casing embedded in a ceiling surface, and a lower surface panel 2 of the casing 1 has an air inlet 3 and an air outlet 4 open. The periphery of the suction port 3 of the lower panel 2 is shallowly recessed, and a suction grille 5 having a number of slits is fitted therein.
The suction grille 5 is hinged to the lower panel 2 on one side thereof, and rotates downward around the hinge during maintenance and inspection work of the air conditioner, so that the suction grille 3 is closed as shown in FIG.
The surrounding area is exposed. Reference numeral 6 denotes an air filter which is attached to the suction port 3 and collects dust from the suction air. Reference numerals 7a and 7b denote horizontal flaps provided at the outlet 4 so as to be rotatable around a horizontal axis, and deflect the blown air. A heat exchanger, a sirocco fan, and the like are disposed inside the casing 1 (not shown), and the fan sucks air sucked from the suction port 3 through the suction grill 5.
The dust is removed by passing through an air filter 6, heat is exchanged by a heat exchanger, and then blown into the room from the outlet 4.

A panel-shaped oil guard filter 8 is attached to the back surface of the suction grille 5, so that the oil guard filter 8 is positioned upstream of the air filter 6 and the heat exchanger with respect to the suction air. . The oil guard filter 8 includes a frame 8a made of resin or the like.
And the air filter 6 attached to the frame 8a.
Consisting of a filter body 8b with a finer mesh than
Oil particles in the intake air are collected by the filter body 8b.

The mounting structure of the oil guard filter 8 will be described with reference to FIGS. Oil guard filter 8
On one side of the periphery of the locking piece 9, which locks on the back of the suction grill,
On the other side, there are provided flexible pieces 10 and 10 which are locked on the back surface of the suction grille and which escape in the unlocking direction when elastically deformed. The locking piece 9 and the flexible piece 10 are formed with substantially the same thickness as the frame 8a. The flexible piece 10
It has flexibility and is approximately L from the periphery of the oil guard filter 8.
It is formed by a protruding piece extending in a letter shape. On the other hand, on the side of the slit on the back surface of the suction grille 5, there are provided holding pieces 11,... For receiving the above-mentioned locking pieces 9, 9 and flexible pieces 10, 10. The holding piece 11 is formed to have a substantially L-shaped cross section so as to hold the locking piece 9 or the flexible piece 10 with the back surface of the suction grille, and is also provided in the horizontal direction of the oil guard filter 8 (the left-right direction in FIG. 3). ) Is blocked on the side (outside) to prevent movement to Further, the flexible piece 10 is provided with a handle 12 extending to the side opposite to the suction grille 5, that is, to the downstream side of the suction air. As shown in FIG. 2, when the suction grille 5 is rotated downward, the locking pieces 9, 9 of the oil guard filter 8 move upward, and the flexible pieces 10,
Reference numeral 10 denotes an arrangement mode in which it is located on the lower side.

In the ceiling-mounted air conditioner having the above-described configuration, when the ceiling-mounted air conditioner is installed in a room, such as a kitchen, where oil smoke is generated, the intake air is
Since the oil particles are collected by the oil guard filter 8 and then flow to the heat exchanger, the oil particles do not adhere to the heat exchanger, so that the heat exchange capacity can be prevented from lowering and the air downstream of the heat exchanger can be prevented. Has a substantially uniform temperature and can prevent the occurrence of condensation. In addition, since oil particles do not adhere to devices such as a fan inside the casing 1 and the air passage and are kept in a low-contamination state, the performance of the air conditioner can be maintained for a long time.

Further, since the panel-shaped oil guard filter 8 is disposed on the back surface of the suction grille 5, the lower panel 2 of the casing 1 can be formed thin even when the oil guard filter 8 is mounted, thereby making the air conditioner compact. Can be. Further, since the suction air flows to the air filter 6 after the oil particles are collected by the oil guard filter 8, the oil particles do not adhere to the air filter 6 and the life thereof can be extended.

Further, as shown in FIG. 2, the suction grille 5 is pivoted downward and opened, and then the flexible pieces 10 and 10 are elastically deformed with the handle 12 located on the lower side and detached from the holding piece 11, If the oil guard filter 8 is shifted downward as it is, the locking pieces 9, 9 come off the holding piece 11, and the oil guard filter 8 can be removed from the suction grill 5. Further, the oil guard filter 8 can be mounted on the suction grille 5 in the reverse order. Therefore, the oil guard filter 8 can be easily attached to and detached from the suction grille 5 and can be attached and detached at a low position, and maintenance work such as replacement of the oil guard filter 8 can be facilitated.

Since the handle 12 is located on the downstream side of the intake air of the oil guard filter 8, no oil particles adhere to the handle 12. Therefore, the oil guard filter 8 can be removed from the suction grille 5 without soiling the hands.

In the above embodiment, two locking pieces 9 and 9 and two flexible pieces 10 and 10 are provided. However, one locking piece or one flexible piece may be provided. There may be more than one.

[0018]

As described above, in the ceiling-embedded air conditioner of the first aspect, since oil particles of the suction air are collected on the upstream side of the heat exchanger, the heat exchange capacity is reduced, and dew condensation is generated. Can be prevented beforehand, and devices such as fans in the casing and air passages can be kept in a state of low contamination with oil, and the performance of the air conditioner can be maintained for a long time. Also, the bottom panel of the casing can be formed thin
The air conditioner can be made compact. further,
It is easy to attach and remove the oil guard filter to the suction grille.
Maintenance work such as replacement of the oil guard filter is easy.
Become. Also, since oil particles do not adhere to the handle,
Remove the filter from the suction grill and clean your hands.
Can be done without. Moreover, the oil guard filter
Can be easily attached to and detached from the suction grill,
Maintenance work such as replacement of the filter becomes easy.

Further, according to the second aspect , since the flexible piece is formed thin, the entire oil guard filter can be made thinner, and the air conditioner can be made compact.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a ceiling-embedded air conditioner according to the present invention as viewed from below with a suction grille opened.

FIG. 2 is an exploded perspective view of the suction grill and the oil guard filter of the embodiment.

FIG. 3 is an enlarged plan view of the oil guard filter of the embodiment.

FIG. 4 is a sectional view taken along line AA in FIG. 1 of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 3 Suction port 5 Suction grill 6 Air filter 8 Oil guard filter 9 Locking piece 10 Flexible piece 12 Handle

Continuing from the front page (72) Inventor Hiroyuki Omae 1000, Oya, Oyamoto-cho, Kusatsu-shi, Shiga 2 Daiga Industries Co., Ltd., Shiga Works (72) Inventor Mitsuyo Uchida 1000, Oya, Okamoto-cho, Kusatsu-shi, Shiga 2 Daikin Industries, Ltd. Shiga Works (56) References JP-A-6-147529 (JP, A) JP-A-4-84040 (JP, A) JP-A-2-223740 (JP, A) 62415 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 1/00 371

Claims (2)

(57) [Claims] An air filter is provided inside a casing for collecting dust from suction air, and the suction air is upstream of a heat exchanger.
At the side, an oil guard filter (8) that collects oil particles
Ceiling-mounted air conditioning installed separately from the air filter (6)
Machine, in the suction port (3) on the lower surface of the casing (1)
When the suction grill (5) is provided so as to be rotatable downward,
In both cases, a panel-shaped oil is placed on the back of this suction grill (5).
A guard filter (8) is provided and an oil guard
One side of the filter (8) is locked to the back of the suction grill
Locking piece (9) that protrudes, and on the other side, the back side of the suction grille
And flexible to escape in the unlocking direction when elastically deformed
A piece (10) is protruded, and the flexible piece (10)
Is provided with a handle (12) extending downstream of the suction air.
And when the suction grille (5) rotates downward,
In the oil guard filter (8), the locking piece
(9) so that the flexible piece (10) is located on the lower side
A ceiling-mounted air conditioner characterized by being made . 2. A flexible piece (10) is according to claim 1, characterized in that it is formed by the projecting pieces extending in a substantially L shape from the periphery of flexibility have oil guard filter (8) Ceiling-mounted air conditioner.