JP3071038B2 - Suction grill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction grill in which a number of bars arranged at a suction portion of an exterior body are inclined in the same direction.

[0002]

2. Description of the Related Art A suction grill in which a number of bars are arranged at a suction portion of an exterior body is disclosed, for example, in Japanese Utility Model Publication No. 3-11622. The crossbar described in this publication is inclined to the side opposite to the outlet, and the gap between the crossbars is set substantially the same at the front end and the rear end of the suction side surface.

[0003]

In the above-described bar of the suction grill, the rear end 50 of the suction side protrudes in a triangular shape toward the suction passage with respect to a perpendicular to the exterior body, as shown in FIG. , The air intake resistance was high. In addition, the noise was increased as the ventilation resistance was increased.

[0004] The present invention provides a suction grill with low ventilation resistance and noise.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a method for absorbing an exterior body.
The side where many flat-shaped crosspieces face the windward side
(Hereinafter referred to as the leeward side) and the side facing the leeward side (hereinafter referred to as the leeward side).
In the same direction to have a downwind side surface).
In suction grille which is arranged, the windward side of the bar
Rear surface (the leeward side end portion) recessed, upwind of each bar
The length of the side surface is shorter than the length of the leeward side surface .

[0006]

[Function] In this suction grill, it is arranged inclined in the same direction.
Recessed to the rear end of the windward side of the the suction grill bars, its
The length of the leeward side of each crosspiece is calculated from the length of the leeward side.
Since Also short gap桟同Zhi adjacent this recess, i.e., air passage size Kunar suction air.

[0007]

An embodiment of the present invention will be described with reference to the drawings. In FIG. 2, reference numeral 1 denotes an exterior body including a heat exchanger 2, a drain pan 3, and a blower 4, which is suspended in a ceiling space. Reference numeral 5 denotes a decorative panel which is hermetically attached to a lower portion of the exterior body and the ceiling plate 6.

In FIG. 3 to FIG. 6, reference numeral 7 denotes a blowing device, which comprises wind direction changing plates 8, 9, an interlocking plate 10, a motor 11 for driving the wind direction changing plate 8, and a blowing frame 12 to which these are attached. It is composed of Reference numeral 13 denotes a display device, which is a mounting plate 14 having a brand name or a model name written on a surface thereof, and a display substrate 1 mounted on the mounting plate and having a display lamp and the like.
And 5. Reference numeral 16 denotes a suction grill to which two hooks 17 and metal reinforcing members 18, 19, 20 are attached. The suction grill is made of a resin material and has a frame 16a and a crosspiece 16b. The support portions 18a, 20a into which the insertion portions 21a of the air filter 21 are inserted and hooked are inserted into the reinforcing members 18, 20, respectively.
Are formed. Also, the panel body 2 is attached to the reinforcing member 20.
2 is formed with a pivot 20b.

The panel body 22 has an inlet 22a and an outlet 22b, and a female latch 23a into which a male latch described later is fitted. Then, the blowing device 7 is screwed to the boss 22c so as to be continuous with the blowing port 22a. Further, a display device 13 is attached next to the blowing device 7. Further, the grille 16 is attached to the front side of the panel body 22.

[0010] In FIGS. 1 and 6, the bars 16b are inclined to the blower 4 side, moreover, the rear end of the windward-side surface of the bar 16b gap桟同Zhi adjacent than the rear end 50 of the prior art Is formed. In other words, this recess 16c is formed ,
The length of the leeward side of the crossbar is shorter than the length of the leeward side
So that the adjacent piers
The gap is enlarged. The notch 16c is formed by a vertical portion 16d and a curved portion 16e smoothly connected to the vertical portion. Reference numeral 16f denotes a horizontal portion formed in the cutout portion 16c, which has a size of about 0.3 to 0.5 mm. Due to the presence of the horizontal portion, burrs are less likely to occur during manufacturing with a mold.

The hook 17 has a hook 17a that hooks on the panel body 22, and an inclined surface 17b that makes it easy to get over the hook of the panel body 22 when the suction grill 16 is pushed toward the exterior body 1. A bar 16b of the suction grill 16 and a knob 17c having the same cross section are formed. When this knob is pressed, the hook piece 17a comes off the panel body 22. Reference numeral 17 d denotes a spring fitted into the hook 17, which pushes the hook 17 a toward the hook of the panel body 22. The spring fits into a groove (not shown) of the panel body 22 and is fixed at a predetermined position. 17e is a shaft for passing the spring 17d, and 17f is a stopper for preventing the spring 17d from coming off the shaft. And this hook 1
7 and at both ends of the suction grill 16 are provided with the male latches 23b. Therefore, after the hook 17 is hooked on the panel body 22, the suction grill 1 corresponding to the position of the male latch 23b is provided.
When the front side of No. 6 is pushed toward the exterior body 1, the male latch 23b fits into the female latch 23a on the panel body 22 side.

FIGS. 5 to 9 show an air filter, 21c is an air filter frame, 21d is an air filter net, and this net is formed in a corrugated shape so that even if a large amount of dust adheres, the suction passage is formed. There is no blockage. Reference numeral 21e denotes a fixing piece that hits the inside of the crest of the net 21d to prevent the net from shifting. The fixing piece has an inclined surface 21f for guiding air smoothly. 2
1g and 21h are relief portions of the latch 23b and the hook 17;
Reference numeral 21i denotes a reinforcing portion of the net 21d. The reinforcing portion has a surface inclined toward the crest, and this surface is smoothly connected to the crest.

In FIG. 10, reference numerals 22d and 22e denote claws formed on the panel body 22, which fit into the blowout frame 12. Then, on the suction grill side (right side in the figure), the blowout frame 12 and the panel main body 22 are fixed by screws 25. In addition, since the reinforcing metal fitting 26, the blowout frame 12 and the panel main body 22 are integrally tightened with the screws 27 on the end side, these components are more firmly fixed. Reference numeral 22g denotes a flocking provided at the outlet of the panel body 22.

The air conditioner thus constructed is assembled as follows. When assembling the decorative panel, first, the blowing device 7, the display device 13, and the suction grill 16 are separately assembled.

The blowing device 7 can be assembled by attaching the wind direction change plates 8 and 9 and the motor 11 to the blowing frame 12. The display device 13 can be assembled by mounting the display substrate 15 on the mounting plate 14. The suction grill 16 can be assembled by attaching the reinforcing members 18, 19, 20 and the hooking device 17, and further inserting the insertion portion 21a into the support portion of the reinforcing members 18, 20, and attaching the air filter 21. .

When the display device 13, the blowing device 7, and the suction grill 16 are assembled to the panel main body 22, the decorative panel 5 is mounted.
Is assembled.

As described above, since the blowing device 7, the display device 13, and the suction grill 16 are formed separately from the panel body 22, the blowing frame 12, the wind direction plate 8,
9, the number of display lamps of the display device 13, the type and brand name to be displayed, the suction grill 16
When changing the number and shape of the crosspieces 16b, it is only necessary to newly redesign only the portion to be changed, so that a different decorative panel can be designed and manufactured with a minimum necessary change. Further, in the conventional device in which parts are sequentially assembled to the panel main body, the large panel main body must be moved on the line, and there is a possibility that the panel main body is stained or damaged. In order to assemble the assembled display device 13, blowout device 7, and suction grill 16,
The assembly time is shortened, and the possibility that the decorative panel 5 is soiled or damaged can be reduced. Further, since the blow-out device 7, the display device 13, and the suction grill 16 of the decorative panel 5 are configured separately from the panel main body 22, replacement at the time of failure may be performed only at the failed portion. The burden and replacement work can be reduced.

When the decorative panel 5 is attached to the lower part of the exterior body 1 installed in the ceiling space, the installation of the air conditioner is completed.

When the decorative panel 5 is attached to the lower part of the exterior body 1, the suction grill is particularly elongated easily because it has an elongated shape made of resin and is formed thin.
However, since metal reinforcements 18, 19, and 20 are attached to the back surface of the suction grill 16 of the decorative panel 5, the reinforcements 18, 19, and 20 are used by the reinforcements 18, 19, and 20.
Since the deformation and bending of the suction grille 6 are suppressed, the suction grill 16 is prevented from sagging as much as possible. Further, since the rotation side (the reinforcement 18 side) of the suction grill 16 is fixed to the panel main body 22 by two hooks 17 and three male latches 23b, the suction grill 16 on the reinforcement 18 side is provided. Is prevented from hanging down by its own weight.

The suction grill 16 of this air conditioner is
Pushing the knob 17c toward the reinforcing member 18 removes the hooking piece 17a from the panel main body 22, and pushes the front side of the suction grill 16 corresponding to the position of the male latch 23b toward the exterior body 1 to pull the suction grill 16 and the panel main body 22 together. Since the hook is released, the suction grill 16 can be rotated.

In this air conditioner, when the air conditioner is in operation, air flows through the bars 16b of the suction grill 16 as shown in FIG.
Flowing through the gap. As shown in FIG. 1, the air near the bar 16bα near the reinforcing member 18 rises almost directly above,
The air in the vicinity of β flows diagonally upward to the left, and the air in the vicinity of the brace 20 flows diagonally upward to the left, generally along the direction in which the bar 16bγ is inclined , along the windward side surface of the bar .

The air in the vicinity of the bar 16bα passes through a gap [suction passage] L larger than the gap of the conventional lattice, so that the ventilation resistance is small. In addition, since the curved portion 16e of the bar 16b is formed in a round shape, the air flowing along the vertical portion 16d is easily separated from the curved portion 16e and the flow of the air is not easily disturbed, so that the ventilation resistance is hardly increased. In addition,
The air around bβ has a larger gap than the conventional gap,
Since the air passes through the large gap (suction passage), the ventilation resistance is small. Furthermore, the air near the bar 16bγ is
Since it flows along γ, the ventilation resistance is small. in this way,
Depress the rear end of the windward side of the crosspiece, and
By making the side length shorter than the leeward side length
And the angle of the grilles 16bα, 16bβ,
The ventilation path of the suction air passing through 16bγ is expanded and
Since the ventilation resistance between the crosspieces can be reduced, the noise caused by the ventilation resistance can also be reduced.

By the way, in the air conditioner provided with the suction grill 16, it was confirmed that the noise was reduced by about 2.5 dB as compared with the air conditioner provided with the conventional suction grill having the bar 50.

The air filter 21 is also provided with a fixed piece 21.
e smoothly guides the intake air, so the ventilation resistance is small.
The noise is also small.

[0025]

According to the present invention, in a suction grill in which a number of crosspieces are inclined in the same direction , the suction grille is arranged to be inclined in the same direction.
Trailing edge recessed in the windward side of the crosspiece of the suction grille, it
Make the length of the leeward side of each crossbar longer than the length of the leeward side
Because of this shortening , the gap between adjacent piers,
That air passage of the suction air is large no longer, the same structure and dimensions
The ventilation resistance of the suction air can be reduced as compared with the grill having the crosspiece . In addition, since the ventilation resistance is small, noise accompanying the ventilation resistance can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of a grille of a suction grille showing an embodiment of the present invention.

FIG. 2 is a sectional view of an air conditioner provided with the suction grill.

FIG. 3 is a perspective view showing a panel main body of the air conditioner.

FIG. 4 is a perspective view showing a blowing grill and a display device of the air conditioner.

FIG. 5 is a perspective view showing a suction grill of the air conditioner.

FIG. 6 is a sectional view of a suction grill of the air conditioner.

FIG. 7 is a plan view showing an air filter of the air conditioner.

FIG. 8 shows an air filter of the air conditioner in FIG.
FIG. 8 is a sectional view taken along line VIII-VIII.

FIG. 9 is a sectional view taken along line IX-IX of the air filter of the air conditioner.

FIG. 10 is a fragmentary cross-sectional view showing the vicinity of a blowing device of the air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exterior body 16 Suction grill 16b Bar 16c Notch [dent]

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 401

Claims (1)

(57) [Claims] 1. A large number of flat bars are provided at a suction portion of an exterior body.
Has a side facing leeward and a side facing leeward
In the suction grille which is arranged so as to be inclined in the same direction so that the rear end of the windward side surface of the crosspiece is depressed ,
Make the length of the leeward side of the crossbar shorter than the length of the leeward side.
A suction grill characterized by the following.