JP2006132938A - Ceiling embedded air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem of a conventional constitution of a ceiling embedded air conditioner that the contact of a drain pan with a power supply cable causes the degradation of the drain pan because the material of the drain pan is generally styrene foam and the surface material of the power supply cable extended from an electric equipment box is vinyl chloride. <P>SOLUTION: The ceiling embedded air conditioner comprises a box-shaped air conditioner body storing a heat exchanger, a blower, and the drain pan for covering the lower surface of the heat exchanger, and a decoration panel mounted to the lower surface of the air conditioner body. The electric equipment box is arranged between the drain pan and the decoration panel, and formed of an electric equipment box body and a lid body. The electric equipment box has a substantially U-shaped notch for passing the power supply cable at the side wall of the electric equipment box body, and has an outer end extending outward from the side wall of the electric equipment box body so that the lid body covers the substantially U-shaped notch. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a structure of a ceiling-embedded air conditioner.

Generally, a ceiling-embedded air having a box-shaped air conditioner main body containing a drain pan that covers a lower surface of a heat exchanger, a blower, and a heat exchanger, and a decorative panel attached to the lower surface of the air conditioner main body Harmonic devices are known.

In this type of ceiling-embedded air conditioner, it is common to have an electrical box in the space between the decorative panel and the drain pan.
JP 9-49640 A

  This electrical box is composed of an electrical box main body and a lid. Notches are provided.

  However, in the conventional configuration, since the notch is opened and the terminal plate is exposed, there is a risk of electric shock if a finger is accidentally inserted into the power cable insertion notch during maintenance. .

  Conventionally, this power cable extends from the electrical box and extends outside through a groove provided in the drain pan.

  However, in the conventional configuration, since the drain pan is generally made of styrene foam and the surface material of the power cable is vinyl chloride, there is a problem that the drain pan deteriorates when the drain pan and the power cable are brought into contact with each other.

  That is, the invention of claim 1 includes a box-shaped air conditioner main body that houses a heat exchanger, a blower, and a drain pan that covers the lower surface of the heat exchanger, and a decorative panel attached to the lower surface of the air conditioner main body. The ceiling-embedded air conditioner includes an electrical box disposed between the drain pan and the decorative panel, the electrical box comprising an electrical box body and a lid, and a power source is provided on a side wall of the electrical box body. It has a substantially U-shaped cutout for inserting a cable, and the lid has an outer end portion extending outward from the side wall of the electrical box body so as to cover the substantially U-shaped cutout. To do.

  According to the first aspect of the present invention, since the substantially U-shaped notch for inserting the power cable is provided on the side wall of the electrical box main body, the power cable can be easily inserted, and the labor of the operation can be simplified. Since the outer end portion extends outward from the side wall of the electrical box body so as to cover the substantially U-shaped notch, it is difficult for fingers to enter the substantially U-shaped notch and there is no fear of electric shock.

  The invention according to claim 2 includes a box-shaped air conditioner body that houses a heat exchanger, a blower, and a drain pan that covers the lower surface of the heat exchanger, and a decorative panel attached to the lower surface of the air conditioner body. The ceiling-embedded air conditioner includes an electrical box disposed between the drain pan and the decorative panel, and a guide plate for preventing the power cable extending from the electrical box and the drain pan from contacting the drain pan. It is characterized by having.

  In the invention described in claim 2, since the drain pan has a guide plate for preventing contact between the power cable extending from the electrical box and the drain pan, if the power cable is wired along the guide plate, the power cable is connected to the drain pan. There is no direct contact. For this reason, it is possible to prevent the deterioration of the drain pan caused by the power cable directly contacting the drain pan.

  As described above in detail, according to the present invention, since the drain plate is provided with the guide plate that houses the power cable and guides it to the outside, there is no direct contact between the drain pan and the power cable. Even when a chemical change is likely to occur when the member comes into contact, the drain pan can be prevented from being deteriorated and the drain pan can be protected.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view of an embodiment of a ceiling-embedded air conditioner according to the present invention. As shown in FIG. 1, this ceiling-embedded air conditioner has an indoor air conditioner 10 (hereinafter referred to as an air conditioner) that is suspended and fixed in a ceiling space 11 of a building 40. . The air conditioner 10 includes the above-described decorative panel 14 and an air conditioner body 22. A suction port 16 is opened at the center of the decorative panel 14 of the air conditioner 10, and a suction grille 52 is provided there. A total of four air outlets 18 are open at positions around the four sides of the suction port 16 of the decorative panel 14.

  The air conditioner body 22 includes a drain pan 23, a fan motor 24 at a substantially center, and a turbo fan 26 connected to a rotation shaft 24 a of the fan motor 24. A heat exchanger 31 bent into a substantially rectangular shape is provided so as to surround the turbo fan 26.

  Further, as shown in FIG. 2, the drain pan 23 is provided with a drain pump 30 on the upper right side in the drawing, and a drain pipe 32 connected to the drain pump 30. In addition, a refrigerant pipe 34 connected to the heat exchanger 31 is provided on the upper left side in the drawing.

  The heat exchanger 31 is supplied with refrigerant from an outdoor unit (not shown) through the refrigerant pipe 34.

  As shown in FIG. 1, when the fan motor 24 in the air conditioner body 22 is operated, the turbo fan 26 rotates and the air in the room R is sucked from the suction port 16. The sucked air is purified by the filter 20, sent to the heat exchanger 31, heat exchanged by the heat exchanger 31, and then blown into the room R from the four outlets 18.

  Further, hanging metal fittings 44 are provided at the four corners of the air conditioner main body 22, and four bolts 42 fixed to the building 40 are connected to the hanging metal fittings 44.

  By the way, in this embodiment, as shown in FIG. 2, an electrical box 36 for storing electronic components and the like is provided in the space between the decorative panel 14 and the drain pan 23.

  As shown in FIG. 2, since the length of the electrical box 36 in the long side direction is short, the space is installed in a bent shape.

  Hereinafter, the shape of the electrical box 36 will be described with reference to FIGS.

  As shown in FIG. 5, the electrical box 36 includes a metal electrical box body 37 and a lid 38. The electrical box body 37 has a side wall 37a on the long side as shown in FIG. 37b, side walls 37c and 37d on the short side, and a bottom plate 37e.

  The electrical box main body 37 is provided with a bent portion 37f at the approximate center of one long side wall 37a of the electrical box main body 37, and the other long side wall 37b and the bottom plate 37e are joined with cutouts 39b, 39e. There is. The right side in the figure is the electrical box body 37A and the left side in the figure is the electrical box body 37B with the bent portion 37f as a boundary.

  The bent portion 37f is processed so as to be less rigid than the other metal portions of the electrical box main body 37 so that it can be bent. In this embodiment, as shown in FIG. 5, the bent portion 37 f is provided with a slit S extending over the length L 4, and the rigidity is lower than the other metal portions of the electrical box main body 37.

  A bending portion 45 for bonding is provided at the end of the side wall 37b of the electrical box main body 37A facing the notch 39b for bonding. The bending portion 45 for bonding is bent outward by about 45 ° C. with respect to the side wall 37b, and the inner surface 45a of the bending portion 45 for bonding contacts the side wall 37b of the electrical box main body 37B. The joining bent portion 45 is provided with a joining screw hole 46a. A screw hole 46b for joining is provided at the end of the side wall 37b facing the joining notch of the electrical box body 37B, and a joining overhang is provided at the end of the bottom plate 37e in the joining notch direction of the electrical box body B. 47 is provided. The bottom surface 37e is provided with a shape retaining plate 41 for connecting the electrical box main body 37A and the electrical box main body 37B and maintaining the shape during transportation.

  A terminal plate 49, a capacitor 51 for the fan motor 24, a transformer 53, and a control board 55 are mounted inside the electrical box main body 37. The control board 55 is mounted on the electrical box body 37A, and the terminal board 49, the capacitor 51 for the fan motor 24, and the transformer 53 are mounted on the electrical box body 37B. The control board 55 is formed by mounting electronic components on a rectangular board, and includes screw holes 55a to 55d at four corners of the rectangle.

  Of the four screwing holes 55, the screwing hole 55a that faces the joining notch 39 overlaps the bottom plate 37e of the electric box main body 37B so that it overlaps when the electric box main body 37 is bent. A screw hole 57 for fixing the control board is provided.

  Next, an operation when the electrical box body 37 is bent will be described.

  First, the shape holding plate 41 is cut off from the electrical box main bodies 37A and 37B, and when the electrical box main body 37 is bent with reference to the bent portion 37, it becomes a dogleg shape as shown in FIG. The joining bent part 45 of the side wall 37b in the joining notch direction and the side wall 37b of the electrical box main body B are overlapped, and the joining screw hole 46a provided in the joining bent part 45 and the side wall of the electrical equipment box main body B are overlapped. The screw hole 46b for joining provided in 37b overlaps. Through screws 59 are passed through and fixed to these joining screw holes 46a and 46b. At this time, the joining protruding portion 47 of the bottom plate 37e in the joining notch direction of the electrical box body 37B slides into the lower surface of the bottom plate 37e of the electrical box body 37A.

  When the electrical box body 37 is bent, the screw fixing hole 55a of the control board 55 and the control board fixing hole 57 overlap. Screw these holes and fix them.

  That is, in this embodiment, when the electrical box main body 37 cannot be installed unless the electrical box main body 37 is folded according to the space shape in which the electrical box main body 37 is installed, the electrical box main body 37 includes the bent portion 37f, and the bent portion 37f is used as a reference. Since it can be bent and can be transported without being bent during transportation, the transportation cost can be suppressed without being bulky as compared with the case of transportation in a bent shape.

  Next, features of the electrical box main body 37, the terminal plate 49 attached to the electrical box main body 37, and the lid 38 will be described.

  As shown in FIG. 5, the terminal plate 49 has a terminal portion 49 a on the upper surface for screwing the bare metal wire of the power cable 70 and screwing the wires to the capacitor 51, the transformer 53, and the control board 55. Yes. Further, the terminal plate 49 has a pair of fork-like leg pieces 49b and 49c extending on both sides, and a screw fixing hole 49e is provided in a portion corresponding to the crotch of the fork. Further, the side wall 37a of the electrical box main body 37 is provided with an opening 61 into which the leg piece 49b of the terminal plate 49 can be inserted.

  Since one leg piece 49b of the terminal plate 49 is inserted and fixed in the opening 61 cut out in the side wall 37a of the electrical box body 37, only the other leg piece 49c is screwed to the bottom plate 37e of the electrical box body 37. The mounting work of the terminal board 49 can be simplified, and the manufacturing cost such as the reduction of the number of parts can be suppressed.

  Furthermore, as shown in FIG. 5, the electrical box main body 37 has a substantially U-shaped notch 63 on the side wall 37 c on the short side of the electrical box main body 37, and the lid body 38 has this substantially U-shaped shape. The outer end 65 extends outward from the side wall 37 a of the electrical box main body 37 so as to cover the notch 63. The U-shaped notch 63 is for securing a space for inserting the power cable 70 from above the electrical equipment box body 37.

  As shown in FIG. 2, the length L1 of the long side of the lid 38 that covers the electrical box main body 37B is longer than the length L2 of the long side of the electrical box main body 37B by ΔL. This ΔL is about 15 mm in this embodiment. Further, as shown in FIG. 5, the outer end portion 65 of the lid body 38 is bent downward by ΔT.

  According to these configurations, since the substantially U-shaped notch 63 for inserting the power cable 65 is provided in the short side wall 37c of the electrical box main body 37B, the power cable 70 can be easily inserted, and the work is troublesome. In addition, the lid body 38 has the outer end portion 65 extending outward from the side wall 37a of the electrical box main body 37B so as to cover the substantially U-shaped cutout 63, so that the substantially U-shaped cutout There is no risk of electric shock because it is difficult for a finger or the like to enter the notch 63.

  As shown in FIG. 2, a guide plate 67 is provided on the left side of the electrical equipment box 36 in the drawing. The guide plate 67 is formed of a resin member in this embodiment, and the power cable 70 and the signal line 69 are not directly in contact with the power cable 70 and the signal line 69 extending from the electrical box 36 and the drain pan 23. Is provided to guide the outside. As shown in FIG. 6, the guide plate 67 is closely attached to the groove formed in the drain pan 23 and formed in a bowl shape so as to accommodate the power cable 70, and has a height T1, a width W1, and a length L3. I have. The height T 1 of the guide plate 67 is substantially the same as the height of the groove formed in the drain pan 23.

  According to this configuration, if the power cable 70 and the signal line 69 are wired along the guide plate 67, the power cable 70 and the signal line 69 do not directly contact the drain pan 23. For this reason, for example, the surface material of the power cable 70 and the signal line 69 is made of vinyl chloride, the material of the drain pan 23 is made of foamed polystyrene, and even when these materials are in direct contact with each other, a chemical change is likely to occur. Since the cable 70 and the signal line 69 do not directly contact the drain pan 23, the drain pan 23 is not deteriorated, and the drain pan 23 can be protected.

It is sectional drawing which shows one Embodiment of the air conditioning apparatus of this invention. It is a top view of the air conditioning apparatus shown in FIG. It is a top view before bending of an electrical equipment box main body. It is a top view after the electric box main body is bent. It is a perspective view of an electrical equipment box. It is a perspective view of a drain pan and a guide plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Indoor air conditioner 14 Cosmetic panel 22 Air conditioner main body 23 Drain pan 36 Electrical box 37 Electrical box main body 37f Bending part 38 Cover body 49 Terminal board 49b, 49c Leg piece 65 Outer end 67 Guide board 70 Power cable

Claims (2)

A ceiling-embedded air conditioner comprising a box-shaped air conditioner body that houses a drain pan that covers the lower surface of a heat exchanger, a blower, and a heat exchanger, and a decorative panel attached to the lower surface of the air conditioner body The electrical equipment box is disposed between the drain pan and the decorative panel, and the electrical equipment box includes an electrical equipment box body and a lid, and a power cable is inserted into a side wall of the electrical equipment box body. A ceiling-embedded air conditioner having a notch and having an outer end extending outward from the side wall of the electrical equipment box body so as to cover the substantially U-shaped notch. A ceiling-embedded air conditioner comprising a box-shaped air conditioner body that houses a drain pan that covers the lower surface of a heat exchanger, a blower, and a heat exchanger, and a decorative panel attached to the lower surface of the air conditioner body A ceiling plate comprising an electrical box disposed between the drain pan and the decorative panel, wherein the drain pan has a guide plate for preventing contact between the power cable extending from the electrical box and the drain pan. Implantable air conditioner.

Images