JP2001324166A - Ceiling built-in type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling built-in type air conditioner having a function in which a suction grill is stopped automatically at a desired descending position when the desired descending position is stored in a memory and it is raised or lowered again. SOLUTION: There is provided a ceiling built-in type air conditioner in which a suction grill is supported in such a way it can be raised or lowered through an ascending or descending motor for the suction grill. This air conditioner has a function in which a desired descending position of the suction grill is stored in a memory and the suction grill is stopped automatically at the desired descending position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift function of a suction grill of an embedded ceiling air conditioner having an indoor unit installed on a ceiling.

[0002]

2. Description of the Related Art Conventionally, a ceiling-mounted type air conditioner in which a ceiling-mounted decorative panel is provided with a suction grille which can be moved up and down and an air filter is detachably provided on the suction grille, thereby facilitating cleaning of the air filter. Was known.

As a conventional ceiling-mounted air conditioner of this type, for example, a ceiling-mounted air conditioner described in JP-A-9-72569 has been proposed.

Conventionally, the above-described method of cleaning an air filter of a ceiling-mounted type air conditioner is based on a method in which a cleaning operator checks the position of a suction grill while visually checking the position of the suction grill, and detaches / cleans the air filter. It was common to do.

[0005]

For this reason, the cleaning operator must keep an eye on the ceiling-mounted air conditioner until it confirms that the suction grill has been lowered to the desired lowering position and gives a stop instruction. There is a problem that it takes time and effort because it cannot be done.

[0006] Therefore, there is a demand for saving the trouble by automatically storing the desired lowering position and automatically stopping the suction grill at the desired lowering position when moving up and down again. Was getting stronger.

Therefore, the present invention has been made in consideration of the above points,
It is an object of the present invention to provide a ceiling-mounted air conditioner having a function of automatically stopping a suction grill at a desired lowering position when a desired lowering position is stored and then moved up and down again.

[0008]

Means for Solving the Problems In order to solve the above problems, the invention according to claim 1 is directed to a ceiling-embedded air conditioner that supports the suction grill so as to be able to move up and down via a motor for lifting and lowering the suction grill. And a function of storing a desired lowering position of the suction grill and automatically stopping the suction grill at the desired lowering position.

The invention according to claim 2 is characterized in that the function of automatically stopping the suction grill at a desired lowering position is performed by the energization time of the lifting motor.

The invention according to claim 3 is characterized in that the function of automatically stopping the suction grill at a desired lowering position is provided with a stepping motor as a lifting / lowering motor, and is performed by the number of steps of the stepping motor.

According to a fourth aspect of the present invention, a plurality of ceiling-mounted air conditioners are installed, a desired lowering position of each suction grill is stored in advance, and a plurality of ceiling-mounted air conditioners are stored. It is characterized in that the suction grill is raised and lowered automatically at the same time by an instruction from one of the display operation units of the plurality of ceiling-mounted air conditioners.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is an explanatory view of a ceiling-mounted air conditioner showing an embodiment of the present invention. FIG. 2 is an explanatory sectional view of a ceiling-mounted air conditioner showing an embodiment of the present invention. FIG.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a flowchart of a ceiling-embedded air conditioner showing Embodiment 1 of the present invention. FIG. 4 is a flowchart of a ceiling-embedded air conditioner showing Embodiment 2 of the present invention.

FIG. 1 and FIG. 2 show an indoor unit of an air conditioner embedded in a ceiling, which shows an embodiment of the present invention. The unit main body 2 is housed inside the ceiling and a suction hole 3 is provided at the center. The air outlet 4 is provided on four sides of the ceiling, and the ceiling surface 6 is
And a suction grille 9 provided at the center of the decorative panel 7 and having an air inlet 8.

Reference numeral 10 denotes a blower including a turbo fan and a fan motor, 14 denotes a nozzle port for guiding room air from the intake port 8 to the blower 10, 15 denotes a drain pan made of styrene foam in a square ring shape, and 16 denotes a drain pan. Blower 10
Is a plate-fin type heat exchanger arranged in an annular shape so as to surround the blower 10 on the discharge side of the fan. Reference numeral 21 denotes a baffle for guiding the heat exchanged heat by the heat exchanger 16 to the outlet 4. Reference numeral 22 denotes a suspension bolt for suspending the unit body 2 to a ceiling beam by using a hanger. Reference numeral 24 denotes a downstream side of the suction grill 9. It is an air filter attached to the side.

The suction grill 9 is supported via four suspension strings 31 so as to be able to move up and down. As the four suspension strings 31, a resin wire or a metal wire with a vinyl coating on the outer periphery is used, but a dial code may be used. One end of each of the four suspension strings 31 is connected to the suction grill 9.
, And the other ends of the four suspension strings 31 are wound around pulleys 100, respectively.

Further, a drive unit 150 for raising and lowering the suction grille 9 including the pulley 100 described above is provided.
They are collectively arranged on a support plate 151 provided in the opening of the unit body 2.

This support plate 151 is fixed to the decorative panel 7. An electrical box 160 containing control means of the present air conditioner is provided in the opening of the unit body 2 so as to face the support plate 151. This electrical box 160
The drive unit 150 is located in the so-called air intake opening of the unit body 2, and the drive unit 150 is fixed to the decorative panel 7, whereas the electric box 160 is fixed to the unit body 2. ing.

An upper limit position detecting sensor 52 (not shown) is provided to accurately store the suction grill 9 in the decorative panel 7. This upper limit position detection sensor detects the upper limit position of the suction grille 9 by, for example, a microswitch or the like.

A display operation unit (not shown) for operating the ceiling-mounted air conditioner includes, for example,
A fixed type such as a wall-mounted type may be used, and it may be connected to the unit main body 2 with a cable.

Next, the operation of the first embodiment of the present invention will be described with reference to FIGS.

The operator of the air filter of the ceiling-embedded air conditioner presses the lowering operation switch of the suction grill 9 of the display / operation unit (step S1).

Then, the elevating motor (not shown) of the suction grille 9 is rotated to drive the drive unit 150, and the suction grille 9 starts to descend via the suspension string 31.
The timer of the control means starts integration (step S
2).

When the suction grill 9 is lowered to a desired lowering position, the cleaning operator presses the lowering switch of the suction grill 9 again (step S3).

Then, the motor for raising and lowering the suction grill 9 (not shown) is stopped, the suction grill 9 is stopped from descending, and the timer in the electrical box 160 stops integrating (step S4).

At this time, when the cleaning operator sets the lowered position of the suction grill 9, the setting switch of the display operation unit is further pressed (step S5).

Then, the time accumulated by the timer is stored in the storage device of the control means (step S6).

Next, the cleaning operator moves the suction grill 9 down.
The air filter 24 that is detachably housed in the
It is cleaned and stored in the suction grill 9 again.

When the cleaning is completed, the cleaning operator presses the up operation switch of the suction grill 9.

Then, a lifting motor (not shown) of the suction grill 9 is rotated to drive the drive unit 150, and the suction grill 9 starts to rise via the suspension string 31.

When the suction grill 9 reaches the upper limit position after the suction grill 9 has started to move upward, the upper limit position detection sensor 52 of the decorative panel 7 operates, and the rotation of the lifting motor 140 of the suction grill 9 is stopped. Thus, the suction grille 9 is accurately stored in the decorative panel 7.

Next, the operation of the second embodiment of the present invention will be described with reference to FIGS.

The cleaning operator operates the suction grill 9 of the display operation unit.
Is pressed (step S1).

Then, the motor for raising and lowering the suction grill 9 (stepping motor: not shown) rotates, and the drive unit 15
0 is driven, the suction grill 9 starts to descend via the suspension string 31, and the storage device in the electrical box 160 starts to accumulate the number of steps of the stepping motor (step S2).

When the suction grill 9 is lowered to a desired lowering position, the cleaning operator presses the lowering switch of the suction grill 9 again (step S3).

Then, the lifting / lowering motor (not shown) of the suction grill 9 is stopped, the suction grill 9 is stopped from descending, and the storage device in the electrical box 160 stops the accumulation of the number of steps of the stepping motor. (Step S4).

At this time, when the cleaning operator sets the lowering position of the suction grill 9, the setting switch of the display operation unit is further pressed (step S5).

Then, the accumulated number of steps is stored in the storage device in the electrical box 160 (step S6).

Next, the cleaning operator moves the suction grill 9 down.
The air filter 24 that is detachably housed in the
It is cleaned and stored in the suction grill 9 again.

When the cleaning is completed, the cleaning operator presses the up operation switch of the suction grill 9.

The ascending operation is the same as that of the first embodiment, and will not be described. As described above, once the cleaning operator stores the lowering position of the suction grill 9 in the storage device, the next time the cleaning of the air filter 24 is performed, the cleaning operator presses the lowering operation switch once to lower the suction grill 9. Is started, the suction grill 9 is automatically lowered until it reaches the lowered position stored in the storage device, and stops there.

For this reason, when a plurality of the above-described ceiling-mounted air conditioners are installed, a plurality of suction grills are simultaneously operated by pressing the suction grille lowering operation switch for each of the ceiling-mounted air conditioners. Since it can be lowered, it is possible to save the labor of the cleaning operator.

Further, a plurality of ceiling-mounted air conditioners are installed, and the desired lowering positions of the respective suction grills are stored in advance in the control means, so that the suction grilles of the plurality of ceiling-mounted air conditioners are stored. If lifting and lowering are performed simultaneously from one display operation unit of a plurality of ceiling-mounted air conditioners, it is necessary to press the suction grill descent operation switch for each ceiling-mounted air conditioner one after another. Is eliminated, so that the labor of the cleaning operator can be greatly reduced.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

[0045]

As described above, according to the first aspect of the present invention, a suction grill is provided in a ceiling-mounted air conditioner that supports the suction grill so as to be able to move up and down via a motor for lifting and lowering the suction grill. The ceiling recessed type air conditioner has a function of storing the desired lowering position of the air conditioner and automatically stopping the suction grill at the desired lowering position, thereby facilitating cleaning of the air filter provided in the suction grille. Can be provided.

According to the second aspect of the present invention, the function of automatically stopping the suction grill at the desired lowering position is performed by the energization time of the lifting / lowering motor, thereby cleaning the air filter provided on the suction grill. , A ceiling-embedded air conditioner can be provided.

According to the third aspect of the present invention, the function of automatically stopping the suction grill at the desired lowering position is achieved by providing a stepping motor as a motor for elevating and lowering the suction grille by using the number of steps of the stepping motor. A ceiling-embedded air conditioner that facilitates cleaning of an air filter provided on a grill can be provided.

According to the fourth aspect of the present invention, a plurality of ceiling-embedded air conditioners are installed, the desired lowering position of each suction grill is stored in advance, and the plurality of ceiling-embedded air conditioners is stored. The suction filter of the suction grill can be easily cleaned by automatically raising and lowering the suction grill of the machine at the same time according to the instruction from one of the display operation units of the multiple ceiling-mounted air conditioners. It is possible to provide an embedded ceiling type air conditioner.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embedded ceiling air conditioner showing an embodiment of the present invention.

FIG. 2 is an explanatory sectional view of a ceiling-embedded air conditioner showing an embodiment of the present invention.

FIG. 3 is a flowchart of a ceiling-embedded air conditioner showing Embodiment 1 of the present invention.

FIG. 4 is a flow chart of a ceiling-embedded air conditioner showing Embodiment 2 of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 ceiling embedded type air conditioner 2 unit main body 3 suction port 4 blowout port 7 decorative panel 9 suction grille 14 elevating motor 24 air filter 31 suspension string

Claims (4)

[Claims] 1. A ceiling-embedded air conditioner that supports a suction grill so as to be able to move up and down via a motor for lifting and lowering the suction grill, wherein a desired lowering position of the suction grill is stored, and the desired lowering position is stored. And a function of automatically stopping the suction grille. 2. The ceiling-embedded air conditioner according to claim 1, wherein the function of automatically stopping the suction grill at a desired lowering position is performed based on a power-on time of the lifting / lowering motor. 3. The apparatus according to claim 1, wherein the function of automatically stopping the suction grill at a desired lowering position includes a stepping motor as the elevating motor, and the function is performed by the number of steps of the stepping motor. Ceiling-mounted air conditioner. 4. A plurality of ceiling-mounted air conditioners are installed, and a desired lowering position of each suction grill is stored in advance, and the suction grills of the plurality of ceiling-mounted air conditioners are moved up and down. The ceiling-mounted air conditioner according to any one of claims 1 to 3, wherein the step (c) is automatically performed at the same time by an instruction from a display operation unit of one of the plurality of ceiling-mounted air conditioners.