JP4436787B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner having an electrical box inside a unit body.

  DESCRIPTION OF RELATED ART Conventionally, the air conditioner which has the air conditioner air blower and heat exchanger which have arrange | positioned the heat exchanger, the air blower, and the electrical equipment box in the unit main body made from a steel plate is known (for example, refer patent document 1). In this type, as shown in FIG. 6, the electrical box 60 is installed at the end of the unit main body 61. The lower edge portion 61b of the side plate 61a of the unit main body 61 is bent inward at a right angle, and the mounting piece 60a of the electrical box 60 described above is connected to the lower end portion 61c of the portion bent inward via a screw 64. It is attached.

The wiring 63 extending from the electrical box 60 is fastened to the electrical box 60 by a clamp 65, and further, fastened to the inner wall of the side plate 61a by a clamp 66, and is led out along the lower edge 61b of the side plate 61a of the unit body 61. The tip is led out from the opening on the opposite side of the unit main body 61 far from the installation position of the electrical box 60.
Further, an air filter and a suction grill (not shown) are installed below the attachment piece 60a of the electrical box 60.
JP-A-10-197004

  However, in the above prior art, the air filter is installed on the lower side of the mounting piece 60a of the electrical box 60 with the screw 64 interposed therebetween, so that the air filter does not pass through the gap between the screw 64 and the air filter. There is a problem that unpurified air is sucked into the suction port of the blower in the unit main body 61.

  The tip of the wiring 63 extending from the electrical box 60 is led out to the opening on the opposite side of the unit main body 61 far from the installation position of the electrical box 60, but the installation interval of the clamps 66 on the inner wall side of the side plate 61a. When it becomes larger, there is a problem in that it is difficult to install the air filter and the suction grill on the lower surface of the unit main body 61 during the maintenance of the air filter.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an air conditioner in which unpurified air is not sucked into a unit body.

In the present invention, a heat exchanger, a blower, and an electrical box are disposed in a unit body made of steel plate, and an air suction port is provided on the lower surface of the unit body located below the blower and the electrical component box. In the air conditioner having a suction grille having an air filter, the suction grille is attached to a grill mounting bracket provided on a rear exterior panel of the unit body so that the rear exterior panel can be opened and closed. When the suction grill is closed, the lower edge of the panel is bent inward at a substantially right angle, and when the suction grill is closed, the suction grill and the air filter are moved upward. A lower end to be suppressed, an inner plate formed by folding the edge of the lower end upward at a substantially right angle, and one end side of the inner plate from the lower side of the inner plate In reference to the remote location by a predetermined distance, and a slope portion which is inclined to the electric-box-side, and wherein the electrical component box that has been screwed to the inclined portion.

In this case, a wiring storage portion for wiring extending from the electrical box and extending to the outside of the unit main body may be formed between a portion other than the inclined portion of the inner plate and the rear exterior panel . A notch that does not reach from the upper end of the inner plate to the lower end of the inner plate may be provided, and the inclined portion may be formed by bending a part of the inner plate along a line crossing the tip of the notch. A wiring fixture for fixing the wiring may be provided on the inner plate.

  According to the present invention, the lower edge portion of the side plate of the unit body is bent inward, a part of the inner plate bent inward is inclined, and the electric box is attached to the inclined portion. Interference between the screw and the filter can be prevented, and the problem that unpurified air is sucked into the air inlet of the blower in the unit body without passing through the air filter is solved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a ceiling-suspended air conditioner suitable for air conditioning in a kitchen room will be described as one aspect of the air conditioner. Of course, the present invention is not limited to a ceiling-suspended air conditioner, and can be applied to other air conditioners such as a ceiling-embedded type.

  FIG. 1 is a perspective view showing an external configuration of an air conditioner 1 according to the present embodiment. The air conditioner 1 has a substantially box-shaped unit main body 1A made of a steel plate such as stainless steel. The front, left, and back surfaces of the unit main body 1A have a front exterior panel 2, a left exterior panel 4, and a right face as side plates. An exterior panel 5 and a rear exterior panel 3 are provided, and a front exterior panel 2 is disposed on the lower surface (top surface) as a floor plate. Each of the left exterior panel 4 and the right exterior panel 5 of the unit main body 1A is provided with two hooks 8, and hanging bolts 15 (see FIG. 2) suspended from the ceiling are hooked on the respective hooks 8. The unit main body 1A of the air conditioner 1 is installed and fixed on the lower surface of the ceiling plate 16 of the kitchen room.

  The front exterior panel 2 in the front is provided with an air blower outlet 10 in which a wind vane (louver) 9 for changing the wind direction is detachably attached, and a suction grill 11 is detachably attached to the lower face to provide an air inlet. 12 is formed. Further, duct air outlets 13 to which spot air-conditioning ducts (not shown) are connected are provided on both the left and right sides of the air outlet 10. That is, in the case where the cool / warm air is blown out from the air outlet 10 and at the same time the cool / warm air is blown out to every corner of the air conditioning chamber, the spot air conditioning duct is connected to each of the duct outlets 13 and 13 to cool / warm the air. A part of the wind is guided from the duct outlets 13 and 13 to the spot air-conditioning duct, and spot air-conditioning is performed. When the spot air-conditioning duct is not connected to the spot air outlet 13, the spot air outlet 13 is closed by the air outlet cover 14 having a heat insulating material attached to the back surface.

  Further, the front exterior panel 2, the lower exterior panel 7, the unit main body 1A, the horizontal blade 9, the suction grille 11, and the outlet cover 14 are each formed of stainless steel, and the attached oil can be easily wiped off with a detergent. It can be done. Therefore, even if oil adheres due to oil smoke in the kitchen, a glossy and clean surface can be easily reproduced.

FIG. 2 is a cross-sectional view showing a schematic configuration inside the unit main body 1A of the air conditioner 1. As shown in FIG.
A partition plate 20 is provided in the unit main body 1A of the air conditioner 1, and the inside of the unit main body 1A is partitioned into two front and rear chambers by the partition plate 20. A front chamber (hereinafter referred to as “heat exchange chamber”) 21 provided with the air outlet 10 is provided with a heat exchanger 22 and a polystyrene pan drain pan 23 provided below the heat exchanger 22. Is done. A drain reservoir 23A having a concave section is formed on the upper surface of the drain pan 23 (the surface facing the heat exchanger 22), and the drain pan 23 is provided with a hose connection pipe (not shown) to which a drain hose is connected. The drain collected in the drain reservoir 23A is sucked up through a drain hose by a drain pump unit (not shown) and discharged out of the unit main body 1A.

  A blower unit 25 is disposed in a rear chamber (hereinafter referred to as “blower chamber”) 24 in which the air suction port 12 is provided. Below the blower unit 25, the above-described suction grill 11 is arranged, and an air filter 26 for air cleaning is attached to the suction grill 11. When the blower unit 25 is driven, the air in the kitchen room is sucked into the unit main body 1A through the suction grill 11 and the air filter 26 (arrow A), and the air is discharged to the heat exchanger 22 by the blower 25 (arrow B). After the heat exchange with the heat exchanger 22, the wind direction is adjusted by the horizontal blade 9, and the cool and warm air is blown out into the kitchen room through the air outlet 10 (arrow C).

FIG. 3 is a perspective view showing a state where the suction grill 11 is removed.
As shown in the figure, the blower unit 25 is composed of two double suction fans 32 having a fan and a fan case, and a blower motor 28 disposed between the blowers 32. It is fixed. A grill fixture 30 is disposed on the rear exterior panel 3, and the suction grill 11 fitted with the air filter 27 is attached to the grill fixture 30 so as to be openable and closable (FIG. 5).

4 is a perspective view when the electrical equipment box 55 is arranged on the unit main body 1A, and FIG. 5 is a cross-sectional view taken along line XX of FIG. 4 in a state where the electrical equipment box 55 is arranged on the unit main body 1A.
As shown in FIG. 5, the lower edge portion of the side plate (rear exterior panel 3) of the unit main body 1A is bent inward at a substantially right angle across the entire lower side of the rear exterior panel 3, and is flat. It has a lower end portion 3a and further has an inner plate 3b folded back at a substantially right angle, that is, as a whole, it is bent into a substantially U-shape. The lower end 3a is substantially parallel to the filter surface of the air filter 26 located below the lower end 3a, and suppresses the upward movement of the suction grill 11 and the air filter 26. Then, as shown in FIG. 4, a part 3c of the inner plate 3b bent inward is inclined and bent, and an electrical box 55 is attached to the part 3c (hereinafter referred to as an inclined part). Yes.

The electrical box 55 stores various electrical circuits such as a printed circuit board, a power transformer, a terminal board, and a capacitor. The electrical box 55 includes an electrical box body 55a that houses the various electrical circuits, and an electrical box lid 55b that covers the opening. It is configured.
As shown in FIG. 4, the electric box cover 55b is provided with two daruma holes 55g, and the daruma holes 55g are fitted into the fixing screws 57 screwed into the electric box body 55a so that the electric box cover 55b is moved in the horizontal direction. Then, the electric screw box lid 55b is fixed to the electric box main body 55a by tightening the fixing screw 57.

An attachment piece 55d projects from one side of the short side wall of the electrical box body 55a, and an inclined attachment piece 55c is integrally formed on the other side.
One mounting piece 55d of the electrical box main body 55a is fixed to the cover 59 via a screw 56a, and the other inclined mounting piece 55c is connected to the inclined portion of the inner plate 3b described above via a fixing screw 56b. It is fixed to 3c.

  The one mounting piece 55d and the other inclined mounting piece 55c are each provided with a saddle hole 55f, and when fixing the electrical box main body 55a, fixing screws 56a screwed into the cover 59 and the inclined portion 3c, A dart hole 55f is fitted into 56b, the electrical box lid 55b is slid in the lateral direction (arrow E direction), and the fixing screws 56a and 56b are tightened to fix the electrical box body 55a.

When the inclined part 3c of the inner plate 3b is inclined and bent, a notch 3g that does not reach the lower end 3i from the upper end 3h of the inner plate 3b is provided, and along a line that crosses the tip of the notch 3g, The inclined portion 3c is bent.
Here, the position of the notch 3g may be a position where the range of the inclined portion 3c is large enough to function as the mounting portion of the electrical box 55.

  As shown in FIG. 5, the inclined portion 3 c is on the electrical box 55 side (front exterior panel 2) on the basis of a position away from the lower side of the inner plate 3 b (matches the surface of the lower end portion 3 a) by a distance h 0. Side) at a predetermined angle r1. The angle r1 is an angle formed by the inner plate 3b and the inclined portion 3c, and in the present embodiment, the angle r1 is about 45 degrees. By providing the distance h0, the rigidity of the lower portion of the rear exterior panel 3 is enhanced as compared with the case where the distance h0 is not provided (h0 = 0).

  Further, as shown in FIG. 4, the portion 3 d other than the inclined portion 3 c of the inner plate 3 b extends in the longitudinal direction of the unit main body 1 </ b> A, and the portion 3 d other than the inclined portion 3 c and the rear exterior panel 3 A wiring storage portion 33 that stores the wiring 31 extending from the electrical box 55 is formed therebetween. The wiring storage portion 33 is formed with a size sufficient to store the wiring 31, and is formed with a width substantially the same as the dimension a of the lower end portion 3a.

  The wiring 31 is drawn into the blower chamber 24 through the eyelet rubber 53 disposed in the electrical box main body 55a, held by the electrical box side clamp 52 disposed in the electrical box main body 55a, and stored in the wiring storage unit 33. Then, as shown in FIG. 3, along the wiring storage portion 33, after being held by the three exterior panel side clamps 51, it is guided to the local wiring intake 38. The local wiring inlet 38 is formed on the right side exterior panel 5 side of the rear exterior panel 3, and a gas pipe 36 and an oil pipe 37 extending from the heat exchanger 22 (FIG. 2) are also passed therethrough. 36 and 37 are connected to an outdoor unit (not shown).

  In this embodiment, when the electrical box 55 is attached to the inclined portion 3c of the inner plate 3b, a distance h is generated between the head of the electrical box fixing screw 56 and the air filter 26 as shown in FIG. Thus, the head of the fixing screw 56 and the air filter 26 do not interfere with each other. Accordingly, there is no gap between the lower end portion 3a of the inner plate 3b and the air filter 26, so that a part of the air flowing in from the suction grill 11 is blown from the gap without flowing through the air filter 26. Troubles such as flowing into the chamber 24 are eliminated.

  Further, since the wiring storage portion 33 is provided outside the inner plate 3b, the wiring 31 can be stored in the wiring storage portion 33, thereby opening the suction grill 11 and the air filter 26 and exposing the air blowing chamber 24. When this is done, since the wiring 31 stored in the wiring storage unit 33 is difficult to see from the outside, the wiring can be stored clearly.

In this configuration, when the operator faces upward in a suspended state and the suction grille 11 and the air filter 26 are removed, the wiring 31 does not hang down and does not interfere with the maintenance. When the suction grill 11 and the air filter 26 are stored facing upward, the wiring 31 does not get in the way and can be stored easily.
Furthermore, since the exterior panel side clamp 51 is screwed to the inner side plate 3b, the exterior panel side clamp 51 does not need to be spot-welded to the rear exterior panel 3 as in the prior art, thereby improving workability. be able to.

  As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this. For example, the inclination angle of the inclined portion 3c is not limited to 45 °, and may be any angle as long as the fixed screw 56 and the air filter 26 do not interfere with each other. Moreover, in the said embodiment, although the inclination part 3c was formed in the edge part of the inner side board 3b, this inclination part 3c can change the position according to the position of an electrical equipment box. Although the inner plate 3b and the inclined portion 3c are separated by providing the cut 3g, the inclined portion 3c may be integrally formed by pressing without providing the cut 3g in the inner plate 3b.

It is a perspective view which shows one Embodiment of the indoor unit by this invention. It is sectional drawing of an indoor unit. It is a perspective view of the indoor unit in the state where the air blowing chamber is exposed. It is a perspective view at the time of arrange | positioning an electrical equipment box. It is XX sectional drawing of FIG. FIG. 5 is a view corresponding to FIG. 4 according to a conventional electrical box arrangement method.

Explanation of symbols

1 Air conditioner (ceiling suspended air conditioner)
1A Unit body 3 Side plate 3b Inner plate 3c Inclined portion 3g Notch 3h Upper end 3i Lower end 22 Heat exchanger 25 Blower unit (blower)
31 Wiring 33 Wiring storage part 51 Exterior panel side clamp (wiring fixing tool)
55 Electrical box

Claims (4)

A heat exchanger, a blower, and an electrical box are arranged in a steel plate unit body, and an air suction port is provided on the lower surface of the unit body located below the blower and the electrical box, and an air filter is provided on the air suction port. In an air conditioner having a suction grille having ,
The suction grille is detachably attached to a grill mounting bracket provided on a rear exterior panel of the unit body, and the rear exterior panel is flattened by bending a lower edge portion of the rear exterior panel inward at a substantially right angle. When the suction grill is closed, a lower end portion that comes into contact with the suction grill and the air filter and suppresses the upward movement of the suction grill and the air filter and an edge of the lower end portion are substantially perpendicular to each other. An inner plate formed by folding back upward, and an inclined portion that is inclined toward the electrical box with reference to a position where one end side of the inner plate is separated from the lower side of the inner plate by a predetermined distance upward. The air conditioner is characterized in that the electrical equipment box is screwed to the inclined portion. The wiring storage part of the wiring extended from the said electrical equipment box and extending to the exterior of the said unit main body was formed between the part other than the said inclination part of the said inner side board, and the said back surface panel. The air conditioner described.   A notch which does not reach from the upper end of the inner plate to the lower end of the inner plate is provided, and the inclined portion is formed by bending a part of the inner plate along a line crossing the tip of the notch. The air conditioner according to claim 1 or 2.   The air conditioner according to any one of claims 1 to 3, further comprising a wiring fixture for fixing the wiring to the inner plate.

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