JPH10185233A - Air suction port device in air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change an inner filter by pulling it down manually from a position on a floor face without using a foot-stool from an air suction port of an air conditioner embedded in ceiling. SOLUTION: A device for covering an air suction port of a decorative panel 2 exposed from a ceiling-plane and mounted on the underside of an air conditioner main body 1 set in a ceiling plenum comprises a grille 3 mounted to the air suction port with the aid of a hinge 11 and provided with a hook on its opening/closing end, a damper 4 for limiting an opening degree of the grille 3, a two-staged slidable mechanism composed of a fixed guide frame 5 provided on the upper face of the grille 3 and slidable frames 6, 7 contained double in the fixed guide frame 5, and which can be extended and retracted along the inclination of the grille 3, an air filter 9 in the slidable frame 7 at the final stage, each leaf spring pressed by a slide surface between the fixed guide frame 5 and the slidable frame 6 and by a slide surface between the slidable frames 6, 7, and a hook 7b provided at a top end of the slidable frame 7. The hook 7b is caught with a hooked-shaped bar to open the grille 3, and the slidable mechanisms are then pulled down to a portion near a floor face for changing a filter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air inlet device installed at an air inlet of an air conditioner installed at a position higher than a floor surface such as a ceiling surface.

[0002]

2. Description of the Related Art A conventional ceiling-mounted air conditioner is shown in FIG. On the lower surface of the air conditioner main body 1, a decorative panel 2 having an air inlet at the center and a vent at the periphery thereof is attached in order to shield an opening provided on a ceiling when the air conditioner main body 1 is installed. Have been. A suction grill 3 is attached to a suction opening of the decorative panel 2. The suction grille 3 includes a hinge 1 serving as a fulcrum for opening and closing.
1, a chain 3 a for holding in an open state, and a claw 3 b for fixing when closed, and a filter 9 for purifying air is mounted on the upper surface of the grill 3.

[0003] This filter 9 needs to be changed for cleaning periodically or at regular intervals of time. This operation is conventionally performed by a person climbing on a stepladder 30 as shown in FIG. Since the grill 3 was opened and the filter 9 was replaced, it was troublesome and dangerous. Japanese Patent Application Laid-Open No. Hei 8-94119 proposes a decorative panel with a torque adjuster that can open and close the suction grille with one touch, but it does not solve the problem without changing to working on a stepladder. On the other hand, for example,
3565 proposes a device that raises and lowers a suction grill to a hand position by operating a remote controller or the like using an electric motor and a wire. The lifting device of this structure is actually
Practical.

[0004]

The air conditioner to which the decorative panel of the above-described automatic lifting and lowering is attached does not require a stepladder and does not need to work at a high place. However, there are problems in the following points. First, the filter cannot be replaced at the time of a power failure because an electric motor is used. Not only in the event of a power outage, but in general, it is instructed to turn off the main power supply of the equipment during service maintenance of the air conditioner.In such a case, the inconvenience of not being able to operate the elevating equipment if the setup is not done well is required. there were. Further, in the case of a failure of the motor for lifting and lowering, the suction grille cannot be opened and the motor cannot be replaced. Further, in general, such an apparatus using an electric motor is considerably expensive compared to a conventional structure, and must be said to be expensive for work performed several times a year.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is possible to manually lower the air from the air suction port of a ceiling-mounted air conditioner to near the floor, and replace the internal filter there. It is an object to provide an air inlet device.

[0006]

In order to achieve the above object, a first air suction device of an air conditioner according to the present invention (hereinafter abbreviated as a first air suction device of the present invention) is provided. An air suction port device that covers an air suction port formed in a decorative panel attached to a lower part of an air conditioner body installed in the back of a ceiling and exposed from a ceiling surface, wherein the air suction port is hinged to the air suction port. A suction grille that is attached to be openable and closable and has a hook on the open / close end, a damper that buffers opening and closing of the suction grille and limits its opening degree, a fixed guide frame fixed to the upper surface of the suction grille, and the inside of the fixed guide. A multi-stage slide mechanism, which comprises a plurality of slide frames which are multiplexed and slidable with each other and which expands and contracts in accordance with an inclination formed by opening a suction grill, and a plurality of slides. A leaf spring mounted on either the fixed guide frame or the slide frame that is in contact with the fixed guide frame and pressed against the sliding surface between the fixed guide frame and the slide frame. And a leaf spring attached to one of the slide frames that are in contact with each other and pressed against a sliding surface between these two slide frames,
A hook provided at the end of the last slide frame, and a hook with a hook is hooked on the hook of the suction grill to open and close the suction grill, and a hook with a hook is hooked on the hook of the last slide frame. It is characterized in that the expansion and contraction of the slide mechanism is performed manually from the floor surface.

[0007] In the first air suction port device, the surface on which the leaf spring between the fixed guide frame and the slide frame contacts and moves, and the surface on which the leaf spring between the slide frames contacting each other contacts and move, It is preferable to provide projections at appropriate positions in the sliding direction. With these projections, the final stage slide frame on which the air filter is mounted can be reliably held at an appropriate height from the floor surface, so that the air filter can be easily replaced.

In the second air suction port device of the present invention, the original end is fixed to the upper surface of the suction grille instead of the multi-stage slide mechanism in the first air suction port device and the leaf spring used in the mechanism. 2 arranged in parallel so as to expand and contract according to the inclination formed by the opening of the suction grille
This filter employs a telescopic shaft and a filter frame mounted on the distal end of the telescopic shaft. The filter is created by manually opening and closing the suction grill from the floor using a hooked bar to expand and contract the telescopic shaft. The frame is raised and lowered.

Further, the third air suction port device of the present invention comprises a fixed guide frame and a slide contacting the fixed guide instead of the leaf spring used in the multi-stage slide mechanism in the first air suction port device. A rail and wheels for combining frames, a rail and wheels for combining slide frames that are in contact with each other, a wire case attached to the guide base end, for urging the wire in the pullback direction, and storing the wire so as to temporarily stop at a desired position, and a wire. Using a wire extending from the case and having a tip attached to the final slide frame, hooking a hooked bar on each hook to open and close the suction grill and extend and retract the multi-stage slide mechanism manually from the floor. This raises and lowers the final slide frame on which the air filter is mounted.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows Embodiment 1 of the present invention.
1 shows an overall configuration of an air suction device of an air conditioner (hereinafter, the air suction device of the air conditioner is abbreviated as an air suction device), and a state of a replacement operation of a filter mounted on the device. The decorative panel 2 attached to the lower surface of the ceiling-embedded air conditioner main body 1 has an air inlet 2a for accommodating a rectangular panel-shaped inlet grille 3 and an outlet 2b around the air inlet 2a. The suction grill 3 has a hinge on one side for coupling to the air suction port 2a, and a hook 3c on the open / close side. The suction grill 3 is opened downward with the hinge 11 as a fulcrum by hooking and pulling a long bar (hook bar) having a hook-shaped tip on the hook 3c.
Further, an air damper 4 is attached by connecting the suction grill 2 to the inner surface of the suction port 2a of the decorative panel 2. The air damper 4 is provided for buffering the speed when the suction grill 3 is opened, and its ends are supported at fulcrums 12, 1 and 2, respectively.
3 is rotatably mounted. The position of the fulcrum is determined by the size of the air damper 4 to be used and the opening of the suction grill 3. Here, the opening of the grill 3 is set to 60 degrees from the horizontal. By employing the damper in this manner, damage to the fulcrum caused by abrupt opening of the suction grille and scattering of dust from the filter due to a shock at the time of release can be suppressed.

FIG. 1 shows a state in which the air damper 4 is fully extended. Although the opening degree of the suction grill 3 is set to 60 degrees here because the workability of the filter replacement is good, the opening degree is changed by changing the position of the fulcrum 12 on the decorative panel side or the size of the air damper. , Can be freely selected according to the ceiling height.

The multi-stage slide mechanism extending obliquely downward along the grill surface from the suction grill 3 is a two-stage operation type, and has a fixed guide 5 fixed to the suction grill 3.
And a slide guide 6 pulled out from the fixed guide 5
And a filter mounting slide 7 pulled out from the slide guide 6. If such a slide mechanism is used, the filter 9 can be removed and mounted without stepping down on the stepladder by lowering the filter mounting slide 7 on which the filter 9 is mounted to the operator's chest.

As shown in FIG. 2, each of the fixed guide 5, the slide guide 6, and the filter mounting slide 7 is a rectangular frame, and the front and rear sides orthogonal to the slide direction and both sides extending in the slide direction are plates or sections. L type L
It is composed of a mold material, a channel material having a U-shaped cross section, and the like.
A slide guide 6 is slidably housed in the fixed guide 5, and a filter mounting slide 7 is slidably housed in the slide guide 6. A hook 8 having a substantially L-shaped cross section is provided on the distal end surface of the filter mounting slide 7. The hook 8 is screwed so that one piece of the L-shaped material rotates on the distal end surface of the slide 7, and the hook at the lower end of the hook 8 fits into the hole 5 a formed in the fixed guide 5 when the slide mechanism is stored. The multi-stage slide mechanism is locked. A hole is formed in the other piece of the L-shaped material, and a hook with a hook is hooked into this hole to rotate the hook 8, thereby locking / unlocking the multi-stage slide mechanism. Further, the filter mounting slide 7 and the slide guide 6 are slid by pulling or pushing the hooked bar at the time of unlocking.

FIG. 1 shows the filter mounting slide 7.
As shown in (1), there is a claw 7a for fixing the filter 9, and the filter 9 is devised so as not to come off during sliding. In addition, the suction port 2 of the decorative panel 2
Since the fixing magnet 21 and the iron material plate 22 are attached to the inner frame and the suction grill 3 in a pair on the surfaces facing each other, the opening and closing operation can be performed with one touch. In other words, the suction grill 3 is slowly opened by its own weight by being pulled with a force greater than the holding force of the magnetic force when it is opened. On the other hand, when it is closed, it can be held by a magnetic force by closing it to a predetermined position.

FIG. 3 is an enlarged view of a sliding portion of the fixed guide 5 and the slide guide 6, and FIG. 4 is a sectional view taken along line IV-IV of FIG. Here, the side member of the fixed guide 5 is formed of a U-shaped groove member, and a long guide groove 15 is formed in a sliding direction in a web (vertical member) of the member.
On the other hand, the side member of the slide guide 6 housed in the channel member of the fixed guide 5 is also formed of a channel member.
Leaf spring 1 sliding in contact with guide groove 15 of fixed guide 5
A case 14 for holding 0 is attached by screws 23 and nuts 24. Guide groove 1 of fixed guide 5
5, small projections 16 for temporarily stopping the sliding of the leaf spring 10 are formed at predetermined intervals. Since the leaf spring 10 is deformed by the guide groove 15 and generates a spring force, a sliding resistance is generated with respect to the sliding of the slide guide 6, thereby suppressing the slide guide 6 from suddenly starting to slide. Further, at the small protrusions 16 provided at equal intervals, the deformation amount of the leaf spring 10 is further increased, so that the resistance to the slide-out is increased. That is, the small projection 16 is a so-called stopper, and the slide guide 6 can be appropriately stopped by an arbitrary small projection.
The sliding portion provided between the fixed guide 5 and the slide guide 6 as described above is similarly provided between the slide guide 6 and the filter mounting slide 7. That is, a case 14 for holding the leaf spring 10 is mounted on the slide guide 6 side, and a guide groove 15 is formed on the filter mounting slide 7 side.

FIG. 5 is a view showing a second embodiment of the present invention. This air suction device includes a fixed guide 5 and a slide guide 6 combined via a sliding portion as in the first embodiment.
The mechanism for attaching the filter 9 is different from that of the first embodiment. Here, a guide groove 6a extending in the sliding direction is formed on a side member of the slide guide 6, while a projection 9a is provided on a filter mounting frame 18 in which the filter 9 is placed.
The filter mounting frame 1 is inserted into the guide groove 6a of the slide guide 6.
The filter mounting frame 18 slides by inserting the projection 9a of No.8. The head of the projection 9a is
Since the diameter of the shaft portion is larger than that of the shaft portion a, an insertion hole for passing the head of the projection 9a is provided at the end of the guide groove 6a.

FIG. 6 shows a third embodiment of the present invention. This air suction device uses a multi-stage telescopic shaft 17 instead of the fixed guide 5, the slide guide 6, and the filter mounting slide 7 shown in the first embodiment. That is, the base end of the telescopic shaft 17 is mounted on the upper surface of the suction grill 3, and a filter mounting frame 18 is provided on the distal end of the shaft 17. The extensible shaft 17 is formed of a small-diameter tube at the base end and a large-diameter tube sequentially toward the distal end, so that when the telescopic shaft is contracted, the filter mounting frame 18 can be sucked into the upper surface of the grill 3. it can.

FIG. 7 shows a fourth embodiment of the present invention. In this air suction device, the multi-stage slide guide is composed of a fixed guide 5, a slide guide 6, and a filter mounting slide 7, which are connected to wheels and guide rails, respectively. Here, a wheel is provided on the side member of the fixed guide 5, and a guide rail is provided on the side member of the slide guide 6, and both are combined. Further, a guide rail is provided on a side member of the slide guide 6, and a wheel is provided on the filter mounting slide 7, and the two are combined. A wire case 19 containing a rewindable wire 19a using a coiled leaf spring is attached to the inner surface of the rear side member on the base end side of the fixed guide 5. The wire 19
The tip of a is mounted on the filter mounting slide 7 so that it can be freely pulled out in the sliding direction.
Note that a commercially available wire case 19 containing the wire 19a is used.

When the wire 19a is pulled out by a predetermined length, the wire 19a can be temporarily stopped at that position by a cam mechanism built in the wire case 19, and further pulled a little in the pulling-out direction, whereby the force of the coiled leaf spring can be reduced. To return to the original wire case 19.

In this embodiment, the spring force of the coiled leaf spring is adjusted so that the filter 9 and the slides 6, 7 do not slide out when the suction grill 3 is opened. A hooked bar is hooked on a hook 7b provided at the front end of the filter mounting slide 7, dragged down to a predetermined position, temporarily stopped, and the filter 9 is replaced in that state. Thereafter, the suspension is released by further pulling the wire 19a in the pulling-out direction with the hook 7b, and the wire 19a is pulled back with only a small assisting force, whereby the slide guide 6 and the filter mounting slide 7 are raised, and the fixed guide 5 is lifted. Is stored inside.

[0021]

According to the present invention, the air suction device of the air conditioner installed above the ceiling is equipped with a suction grill attached to the air suction opening via a hinge, and a filter installed on the suction grill. With a multi-stage slide mechanism or telescopic shaft attached to the tip of the frame, opening and closing the suction grill, and pulling / pushing the multi-stage slide mechanism or telescopic shaft from the floor manually using a bar with hooks. So, when replacing the filter, the worker does not climb on a stepladder, etc.
By lowering the filter near the floor, the filter replacement work, inspection, and the like can be performed safely and easily. In addition, since the air suction device is manually operated and an electric motor is not used, the filter replacement work and inspection can be performed without any problem even when the power is cut or the main power is turned off.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an overall configuration of an air outlet device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a two-stage operation slide mechanism according to the first embodiment.

FIG. 3 is a detailed view showing a configuration of a sliding portion between the fixed guide and the slide guide according to the first embodiment;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a perspective view showing a multi-stage slide mechanism according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing an air outlet device using a telescopic shaft according to a third embodiment of the present invention.

FIG. 7 is a perspective view showing a multi-stage slide mechanism according to a fourth embodiment of the present invention.

FIG. 8 is a diagram illustrating a filter replacement operation in a conventional ceiling-mounted air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air conditioner main body 2 Decorative panel 2a Air suction port 3 Suction grill 3c Hook 4 Air damper 5 Fixed guide 6 Slide guide 7 Filter mounting slide 7a Claw 7b Hook 8 Hook 9 Filter 9a Projection 10 Leaf spring 11 Hinge 12 Support point 13 Support point 14 Plate Spring case 15 Guide groove 16 Small projection 17 Telescopic shaft 17a Shaft tip 18 Filter mounting frame 19 Wire case 19a Wire 21 Magnet 22 Iron plate 23 Screw

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Makoto Nagai 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Inside Air Conditioning Systems Division, Hitachi, Ltd. (72) Inventor Kazuhisa Yagi 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Hitachi Shimizu Engineering Corporation (72) Inventor Masayuki Abe 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Within Hitachi Shimizu Engineering Co., Ltd. (72) Inventor Yoshikazu Kikuchi 1-26, Umeda-cho, Shimizu-shi, Shizuoka Prefecture Tokai System Co., Ltd. (72) Inventor Ken Matsumoto 1-26 Umeda-cho, Shimizu-shi, Shizuoka Tokai System Co., Ltd. (72) Akira Kobayashi 10-1 Yamahara, Shimizu-shi, Shizuoka Mitsumaru Stock Company In-house

Claims (4)

[Claims] 1. The air suction device of an air conditioner, which covers an air suction opening formed in a decorative panel mounted on a lower part of an air conditioner main body installed above a ceiling and exposed from a ceiling surface. A suction grille attached to the suction opening via a hinge so as to be openable and closable and provided with a hook at an open / close end, a damper for buffering the opening and closing of the suction grille and limiting its opening degree, and fixed to the upper surface of the suction grille; A fixed guide frame, a plurality of slide frames that are nested in the fixed guide and are slidable with respect to each other, and a multi-stage slide mechanism that expands and contracts according to an inclination formed by opening the suction grille; A filter mounted in a step slide frame; and a filter attached to any of the fixed guide frame and the slide frame in contact with the fixed guide. A leaf spring pressed against a sliding surface between the fixed guide frame and the slide frame, a leaf spring attached to one of the slide frames in contact with each other and pressed against a sliding surface between the two slide frames, A hook provided at the end of the last slide frame, and hooking a hooked bar on the hook of the suction grille to open and close the suction grille, and hooking a hooked bar on the hook of the last slide frame. Wherein the expansion and contraction of the multi-stage slide mechanism is manually performed from the floor surface, respectively. 2. A surface in which a leaf spring between the fixed guide frame and the slide frame contacts and moves, and a surface in which a leaf spring between the slide frames contacting with each other contacts and moves, are appropriately provided in a sliding direction. The air inlet device for an air conditioner according to claim 1, wherein a projection is provided at a position. 3. The air suction device of an air conditioner, which covers an air suction opening formed in a decorative panel which is attached to a lower part of an air conditioner main body installed above a ceiling and exposed from a ceiling surface. A suction grille which is attached to the suction opening via a hinge so as to be openable and closable, and a hook is provided on an opening and closing end side, a damper which buffers opening and closing of the suction grille and limits its opening degree, and a base end on an upper surface of the suction grille. Two telescopic shafts fixed and arranged in parallel so as to expand and contract according to the inclination formed by opening the suction grill, a filter frame mounted on the distal end of the telescopic shaft, and mounted in the filter frame. A filter, and a hook provided at the tip of the filter frame,
The hook of the suction grill is hooked on a hooked bar to open and close the suction grille, and the hook of the filter frame is hooked on a hooked bar to extend and retract the extensible shaft manually from the floor. An air inlet device for an air conditioner, wherein 4. The air suction device of an air conditioner, which covers an air suction opening formed in a decorative panel that is attached to a lower part of an air conditioner main body installed above a ceiling and exposed from a ceiling surface. A suction grille attached to the suction opening via a hinge so as to be openable and closable and provided with a hook at an open / close end, a damper for buffering the opening and closing of the suction grille and limiting its opening degree, and fixed to the upper surface of the suction grille; A fixed guide frame, a plurality of slide frames nested in the fixed guide and slidable with respect to each other, the multistage slide mechanism extending and contracting according to an inclination formed by opening the suction grill; A filter installed in the last slide frame,
A rail and a wheel for combining the fixed guide frame and the slide frame in contact with the fixed guide; a rail and a wheel for combining the slide frame in contact with each other; A wire case which is temporarily stored so as to be able to be stopped at the position, a wire extending from the wire case and having a tip attached to the final stage slide frame, and a hook provided at a distal end of the final stage slide frame. The hook with a hook is hooked on the hook of the suction grill to open and close the suction grill, and the hook with the hook is hooked on the hook of the last slide frame to expand and contract the multi-stage slide mechanism manually from the floor. An air inlet device for an air conditioner, wherein