JP2000220862A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner where the suction grill can be stored closely in the decorative panel when storing it in the decorative panel. SOLUTION: In an air conditioner which has a suction grill supported freely of ascent and descent by a decorative panel, a plurality of hanging strings 31, 32, 33, and 34 for hanging down this suction grill freely of ascent and descent, and winding pulleys 51, 52, 53, and 54 whereon these hanging strings are wound severally, and which lifts up and lets down the suction grill by the rotation of these winding pulleys, the suction grill is provided with guides 41, 42, 43, and 44 to pass the hanging strings at its two opposite sides, and besides the tips of the inserted hanging strings are coupled with each other through a spring 45 separately for each side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a suction grill of an air conditioner having a unit body installed on a ceiling.

[0002]

2. Description of the Related Art There is a known ceiling-mounted air conditioner in which a suction grill is provided on a decorative panel attached to a ceiling opening, and a filter is provided on the suction grill. By removing the filter provided on the suction grille and cleaning it, the performance of the air conditioner is sufficiently exhibited.

[0003] In order to lower the suction grill housed in the decorative panel from the ceiling to the work place, there has been proposed a ceiling-embedded air conditioner provided with a lifting device for raising and lowering the suction grill on the decorative panel. In this elevating device, one end of a suspension string attached to a suction grill is wound around a winding pulley provided on a decorative panel, and the suction grill is moved up and down by rotation of the winding pulley. In the elevating device, two or more pairs of suspension strings are used to stably raise and lower the suction grille, and the suspension strings are simultaneously drawn out and wound.

[0004]

However, since the lengths of the straps are not always constant and the straps are irregularly overlapped during winding, they are wound up. At the time of storage, the storage timing of each part around the suction grill may be shifted. Due to this displacement, there arises a problem that the winding of the suspension string is stopped in a state where the suction grill is not housed in close contact with the decorative panel and a part of the suction grill is in contact.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art and to provide an air conditioner capable of storing a suction grill in close contact with a decorative panel.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a suction grill supported on a decorative panel so as to be movable up and down, a plurality of suspension strings for suspending the suction grill so as to be movable up and down, and In a wind-up pulley around which a string is wound, and an air conditioner that raises and lowers a suction grill by rotation of the wind-up pulley, the suction grill is provided with a guide through which a hanging string is passed on two opposing sides. The suspension string is inserted and the ends of the suspension strings inserted for each side are connected via a spring.

When the suction grill is raised, even if one side of the suction grill comes into contact with the decorative panel first, the spring of the suspension string on the side that first comes into contact extends, so that the take-up pulley continues to rotate and the suspension string is moved. The suction grill is wound around the take-up pulley, and the other side of the suction grill is in contact with the decorative panel, and four sides of the suction grill are in close contact with the decorative panel.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a general ceiling-mounted air conditioner. In FIG. 1, reference numeral 1 denotes a ceiling-mounted air conditioner. This ceiling-mounted air conditioner 1
A unit main body 3 housed in the ceiling interior 2, a decorative panel 8 provided on a ceiling surface 7 so as to have a suction port 4 at the center and air outlets 5 at four sides of an outer periphery and to cover a ceiling hole 6, A suction grille 9 having a suction port 4.

Reference numeral 12 denotes a blower comprising a turbo fan 13 and a fan motor 15 attached to a top plate 14, 16 denotes a nozzle port for guiding room air from the suction port 4 to the turbo fan 13, and 17 denotes an inner rising portion 18; A drain pan 22 having an outer rising portion 19 and formed of styrene foam in an angular ring shape is a plate fin type heat exchanger annularly arranged on the discharge side of the turbo fan 13 so as to surround the fan. Reference numeral 23 denotes a heat insulating material wound around the peripheral surface of the unit body 3, and reference numeral 24 denotes the heat exchanger 2.
A wind guide unit for guiding the heat exchanged air to the air outlet 5, a hanging bolt 25 for hanging the unit body 3 to a ceiling beam with a hanging tool, and a filter 26 mounted on the downstream side of the suction grill 9. is there.

Next, the main part of this embodiment will be described with reference to FIGS. 2 and 3. In FIG. 2, the suction grille 9 is manually operated through four suspension cords 31, 32, 33 and 34. And is supported by the decorative panel 8 so that it can be lowered. As the four suspension strings 31, 32, 33, and 34, a resin wire or a metal wire having a vinyl coating on the outer periphery is used. Four suspension strings 31, 32, 33, 34
Are guide pulleys 35, 36 provided on two opposing sides inside the decorative panel 8, panel guides 37, 38, 39,
40, grill pulley 4 provided on two sides of suction grill 9
1, 42, 43, and 44, respectively. Hanging string 3
1 and the tip of the hanging string 32, the tip of the hanging string 33 and the hanging string 34
Are connected to each other by a spring 45.
The winding ends of the suspension strings 31, 32, 33, 34 are wound around winding pulleys 51, 52, 53, 54, respectively. In addition, each grill pulley 41,42,43,44 and each hanging string 3
A slight resistance is provided between 1, 32, 33, and 34 so that the suction grille 9 does not inadvertently tilt.

The take-up pulleys 51, 52, 53, 54
And 52, 53 and 54 are respectively connected and fixed to a shaft 56 pivotally supported by the decorative panel 8.
The shaft 56 is rotated by the operation of the winding means 57.

The take-up means 57 is a take-up roll 59 fixed to the shaft 55 and incorporating a ratchet mechanism (not shown).
And the basic roll 5 for winding the leaf spring 60 of the spiral spring 61
8, and the tip of the leaf spring 60 is attached to the take-up roll 59. The leaf spring 60 is taken up by the take-up roll 59 when the take-up roll 59 rotates counterclockwise by pulling down the suction grill 9.

A handle 63 is provided substantially at the center of the lower surface side of the suction grill 9, and the tip of the pull-down bar 62 is hooked on the handle 63.

As described above, the suction grill 9 is provided with
It is hung on the decorative panel 8 by 2, 33, 34 so as to be able to move up and down freely.

Next, the operation of the embodiment will be described. The suction grill 9 is hooked on the handle 63 on the lower surface of the suction grill 9 and pulled down, so that the suction grill 9 is
It is pulled down while being hung on 2, 33, 34. The take-up pulleys 51, 52, 53, 54 rotate counterclockwise,
At the same time, the shaft 56 also rotates counterclockwise and descends while maintaining a horizontal state. In this case, while the suction grille 9 is urged upward by the rotational force of the spiral spring 61 built in the basic roll 58, the pulldown rod is reduced to the sum of the pulling force and the load (the weight of the suction grille 9 and the filter 26). 6
The force of 2 is added and it is lowered. Therefore, the descending operation is stable and is lowered quietly. In the process of lowering the suction grill 9, the ratchet mechanism of the winding roll 59 always operates, so that the suction grill 9 can be temporarily stopped at an arbitrary position. A filter 26 for purifying air is mounted on the upper part of the suction grill 9, so when the suction grill 9 is pulled down from the ceiling surface 7 and temporarily stopped halfway, the work such as replacement and cleaning of the filter 26 can be performed in a low place. Can be done with
Therefore, as compared with the case of working at a high place, not only the work is simplified, but also the safety of the work can be improved.

When the suction grill 9 is pulled down to the lowermost position, all the leaf springs 60 of the basic roll 58 are wound by the winding roll 59, the ratchet mechanism is operated, and the suction grill 9 is stopped at the lowest position. You. On the other hand, when the suction grille 9 is slightly moved downward in this state, the ratchet mechanism is released (operated), whereby the take-up roll 59 is rotated clockwise by the force of the spiral spring 61 to rotate. The shaft 56 integrally rotates clockwise, and two suspension strings are simultaneously wound on the pair of winding pulleys.

At this time, the suspension strings 31, 32 and 33, 3
If four of the four rolls are wound at the same time, the suction grille 9
Rises while maintaining a substantially horizontal state, but may become stepped when the hanging string is wound.
Even if the lengths 1, 32, 33, and 34 are initially the same, the lengths are not uniform, and the suction grill 9 may be pulled up in a slightly inclined state. If the suction grill 9 is lifted without correcting the tilted state, a part of the suction grill 9 reaches the decorative panel 8 first, and between the grill pulleys 41 and 42 and 43 and 44 on the side that has reached first. As a result, the hanging strings 31, 32 and 33, 34 move, and one side of the suction grill 9 comes into contact with the decorative panel 8. Even if one side of the suction grill 9 comes in contact with the decorative panel 8 first, the spring 45 of the hanging string on the side that comes in contact with the first is extended, so that four more winding pulleys 51, 5 are provided.
The rotation of 2, 53, 54 is continued, and the suspension strings 31, 32, 3
3 and 34 are wound around take-up pulleys 51, 52, 53 and 54, the other side of suction grille 9 abuts decorative panel 8, and when four sides of suction grille 9 come into close contact with decorative panel 8, take-up pulley 51, The rotation of 52, 53, 54 stops. In this way, even when the suction grill 9 is slightly inclined and reaches the upper limit position, the suction grill 9 is stored in close contact with the decorative panel 8 without any gap. Note that the spring force of the spring 45 is
And smaller than the spring force of the spiral spring 61. The spring force of the spiral spring 61 is substantially constant irrespective of the winding amount.

According to this embodiment, even if the suction grille 9 is lifted in an inclined state, all of the suspension strings 31,
Until the winding of the winding pulley 5, 32, 33, 34
Since the rotation of 1, 52, 53, 54 is continued, the suction grill 9 is lifted until it becomes horizontal. In this case, the spring 45 is extended and the take-up pulleys 51, 52, 53,
Can be rotated. Suspension cords 31, 32, 33, 3
Since the unbalance of the length 4 is absorbed by the extension of the spring 45, the suction grill 9 is completely adhered to the decorative panel 8, and there is no gap there.

In addition, one take-up roll is used, and other guide pulleys 35, 36, panel guides 37, 38, 3
9, 40, and only the use of the grill pulleys 41, 42, 43, 44 can provide an inexpensive support structure for the suction grill 9.

As described above, the present invention has been described based on one embodiment, but the present invention is not limited to this. For example, the winding means is not limited to the mechanism described above. As another embodiment, the shaft 56 may be rotated forward and reverse by an electric motor, and the winding pulley may be rotated forward and reverse to draw out and wind up the suspension string, thereby moving the suction grill 9 up and down.

[0022]

As described above, according to the present invention,
At the end of the winding of the suspension string, the storage timing of the suction grill is shifted, and even if the winding of the suspension string on the side that has reached the decorative panel first is completed, the spring continues to rotate the winding pulley, The suspension string on the other side that has not been completely wound up is also wound up. By providing the springs as described above, the winding of all the hanging strings is completed even if the winding time of each of the hanging strings is shifted, so that the suction grill can be stored in close contact with the decorative panel.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a ceiling-mounted air conditioner according to the present invention.

FIG. 2 is a perspective view showing one embodiment of a ceiling-mounted air conditioner according to the present invention.

FIG. 3 is a perspective view showing a state where the suction grille of the present invention is suspended.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ceiling embedded type air conditioner 8 Decorative panel 9 Suction grill 26 Filter 31, 32, 33, 34 Suspension cord 35, 36 Guide pulley 37, 38, 39, 40 Panel guide 41, 42, 43, 44 Grill pulley 45 Spring 51 , 52, 53, 54 take-up pulley 57 take-up means 59 take-up roll

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Michiko Suzuki 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. F-term (reference) 3L051 BG06 BH08 BJ10

Claims (1)

[Claims] 1. A suction grill supported on a decorative panel so as to be able to move up and down, a plurality of suspension strings for suspending the suction grill so as to be able to move up and down, and a winding pulley around which the suspension strings are wound. In the air conditioner, wherein the suction grill is moved up and down by rotation of a take-off pulley, the suction grill is provided with a guide for passing a suspension string on two opposing sides, and the suspension string is inserted, and for each side, An air conditioner characterized in that the ends of the inserted suspension cords are connected via a spring.