JP2022057728A - Ceiling-embedded air conditioner - Google Patents

Abstract

To provide an air conditioner including a ceiling-embedded indoor unit capable of suppressing intrusion of air under the roof to a suction opening formed on a main body unit.SOLUTION: In a ceiling-embedded air conditioner which includes: a main body unit 2 having a supply opening 15 and a suction opening 14; an electrical equipment box 30 disposed on the main body unit 2 and housing electric equipment; and a decoration panel 3 mounted on a bottom surface of the main body unit 2 and provided with a supply port 6 and a suction port 5, and in which the main body unit 2 is disposed under the roof of a building, a wind shielding plate 25 for preventing communication between a ceiling space and the suction opening 14, is disposed between an inner side surface 28 of the decoration panel 3 at a side where an inner peripheral surface 27 of the suction port 5 is over a side surface of the main body unit 2 to an outer side, and the bottom surface of the main body unit 2.SELECTED DRAWING: Figure 7

Description

The present invention relates to a ceiling-embedded air conditioner, the structure of which is a ceiling-embedded air conditioner provided with a decorative panel on the bottom surface of the main body unit.

Patent Document 1 discloses an air conditioner (air conditioner) including a ceiling-embedded indoor unit housed in the ceiling. This indoor unit is equipped with a decorative panel on the bottom of the box-shaped main body (main unit), and this decorative panel communicates with the suction port (suction opening) and the outlet (outlet opening) of the main body unit, respectively. It has an outlet and a suction grill that can be opened and closed to cover the suction port. A blower unit, a heat exchanger, and the like (not shown) are arranged inside the main body unit, and an electrical box containing an electric control component is arranged on one side surface side inside the main body.

In the ceiling-embedded indoor unit provided with the main body, the electrical box, and the panel disclosed in Patent Document 1, an inspection port may be provided on the side surface of the electrical box for common parts. In that case, in order to secure a work space for inspection work, the width of the panel is made larger than the width of the main body, and the electrical box is arranged from the right side of the main body as shown in the schematic diagram shown in FIG. Place the panel on the left side of the main unit. Also, in order to facilitate on-site installation work, the main body should be as compact as possible, and if the panel used for other models is used, the width of the panel will be larger than the width of the main body. In addition, the panel is placed on the left side of the main body rather than on the right side of the main body.

Jikkenhei 4-125124 Gazette

As shown in FIG. 9, when the width of the decorative panel is made larger than the width of the main body unit and the decorative panel is placed offset to the electrical box side of the main body, the side surface of the main body on the electrical box side and the inner peripheral surface of the ceiling opening are arranged. There was a problem that a large gap was created between the air and the ceiling, and the air behind the ceiling flowed to the suction opening instead of the air in the room where the air was conditioned.
In view of the above problems, an object of the present invention is to provide a ceiling-embedded air conditioner provided with a ceiling-embedded indoor unit capable of suppressing air from entering the suction opening formed in the main body unit. It is a thing.

One aspect of the present invention includes a blowout opening formed on the bottom surface on the front side, a suction opening formed on the bottom surface on the rear side, a heat exchanger chamber arranged on the front side inside, and an arrangement on the rear side inside. A main unit having a blower room, an electrical box arranged in the main unit to accommodate electrical equipment, and a decorative panel attached to the bottom of the main unit to form an air outlet and a suction port. In the ceiling-embedded air conditioner installed behind the ceiling of the building, the inner surface of the decorative panel and the main unit on the side where the inner peripheral surface of the suction port is arranged beyond the side of the main unit to the outside. This is a ceiling-embedded air conditioner in which a windshield is provided between the bottom surface of the ceiling and the ceiling space to prevent communication between the suction opening and the ceiling space.

According to the present invention, there is provided an air conditioner provided with a ceiling-embedded indoor unit capable of suppressing the entry of air behind the ceiling into a suction opening formed in the main body unit.

It is an indoor unit of the ceiling-embedded air conditioner which concerns on embodiment of this invention, and is the perspective view seen from the lower back side. It is an indoor unit of the ceiling-embedded type air conditioner which concerns on embodiment of this invention, and is the perspective view seen from the upper front side. It is a perspective view from the lower front side in the state where the decorative panel is removed from the indoor unit of the ceiling-embedded air conditioner according to the embodiment of the present invention, and the state where the blowout chamber is attached to the main body unit. It is a perspective view from the lower front side in the state where the decorative panel is removed from the indoor unit of the ceiling-embedded air conditioner according to the embodiment of the present invention, and the main body unit and the blowing chamber are separated. It is a perspective view which looked at the electric box of the ceiling-embedded air conditioner which concerns on embodiment of this invention from the lower back side. It is a perspective view which looked at the blowing chamber of the ceiling-embedded air conditioner which concerns on embodiment of this invention from the lower back side. It is the indoor unit of the ceiling-embedded type air conditioner which concerns on embodiment of this invention, and is the perspective view which looked at the state which the decorative panel was hung from the main body unit attached to the ceiling from the lower front side. It is the indoor unit of the ceiling-embedded type air conditioner which concerns on embodiment of this invention, and is the perspective view which looked at the state before suspending a decorative panel from the main body unit attached to the ceiling from the lower front side. It is an indoor unit of the ceiling-embedded type air conditioner which concerns on embodiment of this invention, and it is sectional drawing which provided the windshield in the decorative panel of an indoor unit. It is an indoor unit of the ceiling-embedded air conditioner according to the embodiment of the present invention, and is a perspective view of the ceiling opening when the decorative panel is hung from the indoor unit attached to the ceiling, as viewed from the lower front side. .. It is sectional drawing of the indoor unit of the ceiling-embedded air conditioner which concerns on the prior art.

Hereinafter, embodiments of the ceiling-embedded air conditioner according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

The indoor unit 1 and the main body unit 2 will be described with reference to FIGS. 1A and 1B and FIGS. 2A and 2B. FIG. 1A is a ceiling-embedded air conditioner in which the indoor unit 1 is installed on the ceiling of the room to air-condition the room, and the embodiment in which the main body unit 2 of the indoor unit 1 is installed behind the ceiling is viewed from below. It is a perspective view. The indoor unit 1 is hung from the ceiling upper wall of the building by bolts (not shown) that are locked to the hanging metal fittings 22 at the four corners of the main body unit 2.

First, the indoor unit 1 will be described. The indoor unit 1 includes a main body unit 2 installed behind the ceiling, a blowout chamber 40 attached to the front surface of the main body unit 2, an electrical equipment box 30 arranged on the left side of the main body unit 2 and accommodating electrical components (not shown). It has a decorative panel 3 that is arranged on the indoor side of the ceiling and is attached to the bottom surface of the main body unit 2. The decorative panel 3 is provided with a suction port 5 for sucking indoor air into the main body unit 2 on the rear side and an openable / closable outlet 6 for blowing out the air flow from the main body unit 2 on the front side. The main body unit 2 is provided with an indoor heat exchanger 19 (see FIG. 2B) and a sirocco fan 20 as a blower inside, and the refrigerant flowing through the indoor heat exchanger 19 and the air sucked from the suction port 5 of the decorative panel 3 heat. The exchanged and heat-exchanged air is blown out from the outlet 6 of the decorative panel 3 through the chamber outlet 46 formed on the bottom surface side of the outlet chamber 40 described later. The suction port 5 is covered with a suction grill 4 to which a filter 7 for removing dust and dirt is attached.

In the indoor unit 1 in FIG. 1A, the direction of the decorative panel 3 is the bottom surface or the lower side, the direction opposite to the decorative panel 3 is the upper surface or the upper side, the outlet 6 side is the front surface or the front side, and the suction port 5 side is the back surface. The side or rear, the side surface on the side where the electrical box 30 is mounted is referred to as the left side or the left side, and the opposite side surface on the side where the electrical box 30 is mounted is referred to as the right side or the right side. The same applies to the following figure.

FIG. 1B is a perspective view of the indoor unit 1 as viewed from the upper front side. On the front surface of the main body unit 2, an outlet chamber 40 that changes the direction of the air flow is arranged so that the air flow blown from the rear front of the main body unit 2 toward the front is blown toward the bottom surface side. The electrical box 30 is arranged inside the corners formed on the back surface and the left side surface of the main body unit 2. The decorative panel 3 is detachably attached to the bottom surface of the main body unit 2 so as to cover the bottom surface of the main body unit 2, the bottom surface of the blowout chamber 40, and the bottom surface of the electrical box 30, and the decorative panel 3 is attached to the bottom surface of the main body unit 2. In the attached state, the suction grill 4 of the decorative panel 3 is positioned so as to cover the suction opening 14, and the outlet 6 of the decorative panel 3 is positioned so as to communicate with the chamber outlet 46 formed in the outlet chamber 40 described later. ing. When the decorative panel 3 is removed, the bottom surface of the main body unit 2, the bottom surface of the blowout chamber 40, and the bottom surface of the electrical box 30 are exposed to the indoor side.

Further, a windshield 25 is attached to the upper surface of the decorative panel 3 at a position facing the bottom surface of the electrical box 30, and the windshield 25 is formed when the decorative panel 3 is attached to the main body unit 2. Fill the gap between the decorative panel 3 and the electrical box 30. The windshield 25 can prevent the air in the ceiling, which is not the air in the room to be air-conditioned, from being sucked into the suction opening 14 of the blower room 18, which will be described later.

Next, the main body unit 2 will be described. FIG. 2A is a perspective view of a state in which the blowout chamber 40 is attached to the main body unit 2 in a state where the decorative panel 3 is removed from the indoor unit 1, as viewed from the lower front side, and FIG. 2B shows the main body unit 2 and the blowout. It is a perspective view which looked at the state which the chamber 40 was separated from the lower front side. The main body unit 2 includes a top plate 9 forming an upper surface, a pair of side plates 10 forming left and right side surfaces, a bottom plate 11 forming a bottom surface, a front plate 12 forming a front surface, a back plate 13 forming a back surface, and a front plate. It has a housing 8 having a partition plate 26 (see FIG. 3) located between the face plate 12 and the back plate 13 in the front-rear direction, and the left side plate 10 is longer in the front-rear direction than the right side plate 10. Is formed short. A heat exchanger chamber 17 is arranged on the front side of the housing 8, a blower chamber 18 is arranged on the rear side, and the heat exchanger chamber 17 and the blower chamber 18 are separated by a partition plate 26. The electrical box 30 is arranged on the inner surface of the top plate 9 inside the corner formed by the back surface of the housing 8 and the left side surface.

The heat exchanger chamber 17 is formed by a left side plate 10, a right side plate 10, a top plate 9, a bottom plate 11, a front plate 12, and a partition plate 26, and the blower chamber 18 is a right side plate 10. , The top plate 9, the partition plate 26, the back plate 13, and the electrical box 30 installed in the housing 8. The back plate 13 is removable so that the housing 8 can be used as the housing of the main body unit of the duct type air conditioner. By removing the back plate 13, the housing 8 can be placed on the back side of the housing 8. A suction opening is formed. The heat exchanger room 17 accommodates an indoor heat exchanger 19 connected to an outdoor unit installed outdoors and a drain pan 21 arranged below the indoor heat exchanger 19, and the blower room 18 accommodates the indoor heat exchanger 19. Two sirocco fans 20 as blowers for sucking indoor air through the suction port 5 of the decorative panel 3 are arranged.

A suction opening 14 that communicates with the suction port 5 of the decorative panel 3 is formed on the bottom surface side of the blower chamber 18 arranged on the rear side of the main body unit 2, and the air from the room is blown by the operation of the sirocco fan 20. It sucks into the main body unit 2 through the suction port 5 and the suction opening 14. An outlet opening 15 is formed on the front surface of the heat exchanger chamber 17 arranged on the front side of the main body unit 2, and an air flow that has exchanged heat with the refrigerant is blown out from the outlet opening 15 by the indoor heat exchanger 19. An opening (not shown) is formed in the partition plate 26 to allow the blower chamber 18 and the heat exchanger chamber 17 to communicate with each other, and the air sucked from the suction opening 14 by the sirocco fan 20 is sent to the heat exchanger chamber 17 and indoors. The air that has exchanged heat with the heat exchanger 19 is blown out from the blowout opening 15.

Next, the electrical box 30 will be described with reference to FIG. The electrical box 30 is arranged in the housing 8 adjacent to the left side of the blower chamber 18. The electrical box 30 has one electrical box side plate 32 located on the back side of the housing 8 and the other electrical box side plate 32 located on the front side of the housing 8 in a state where the electrical box 30 is arranged in the housing 8. , The electrical box front plate 34 (top plate 9) located on the left side of the housing 8, the electrical box back plate 33 located on the blower chamber 18 side, and the electrical box bottom plate 31 located on the bottom side of the housing 8. However, the upper surface is covered with the top plate 9. The back plate 33 of the electrical box functions as a partition plate for partitioning the left side of the blower chamber 18.

An electrical box bottom opening 35 is formed in the electrical box bottom plate 31, and the electrical box bottom opening 35 functions as a first inspection port in the present invention. Further, an electrical box front opening 36 is formed under the electrical box front plate 34, and the electrical box front opening 36 functions as a second inspection port in the present invention. A reinforcing bar 39 is provided as a support member between the electrical box bottom opening 35 and the electrical box front opening 36. By providing the reinforcing bar 39, the reinforcing bar 39 functions as a support member and deformation of the electrical box 30 can be suppressed. Further, the opening area of the bottom opening 35 of the electrical box is formed to be smaller than the opening area of the front opening 36 of the electrical box. Since the electrical box bottom opening 35 is mainly used for visual recognition of the inside of the electrical box 30, it is not necessary to increase the opening area, and the opening area of the electrical box bottom opening 35 is made smaller than the opening area of the electrical box front opening 36. As a result, the strength of the electrical box 30 can be maintained and deformation can be suppressed. In the present embodiment, the reinforcing bar 39 is provided between the electrical box bottom opening 35 and the electrical box front opening 36, but the reinforcing bar 39 does not necessarily have to be provided.

With the electrical box 30 arranged in the housing 8, the electrical box bottom plate 31 constituting the bottom surface of the electrical box 30 is exposed on the bottom surface side of the main body unit 2, and the electrical components constituting the left side surface of the electrical box 30. The box front plate 34 is exposed on the side surface side of the main body unit 2. In this embodiment, the left side surface of the electrical box 30 and the side surface of the main body unit 2 are arranged so as to have the same surface height without a step. A first inspection lid 37 that closes the bottom opening 35 of the electrical box is attached to the bottom opening (first inspection port) 35 of the electrical box formed in the bottom plate 31 of the electrical box. Further, a second inspection lid 38 for closing the front opening 36 of the electrical box is attached to the front opening 36 (second inspection port) of the electrical box formed in the front plate 34 of the electrical box, and the first inspection lid 37 and the first inspection lid 37 are attached. 2 The inspection lids 38 are separated from each other. The first inspection lid 37 is detachably attached to the electrical box bottom plate 31 in which the electrical box bottom opening 35 is formed by a screw 371 on one end side and a locking piece 372 on the other end side. Further, the second inspection lid 38 is detachably attached to the side plate 10 and the electrical box bottom plate 31 by three screws.

The blowout chamber 40 is formed in a box shape having a pair of end plates on both ends on the side side and openings on the bottom surface side and the back surface side, and covers the blowout opening 15 formed on the front surface of the main body unit 2. As described above, it is detachably attached to the front surface of the main body unit 2. FIG. 4 is a perspective view of the blowout chamber 40 as viewed from the lower rear side. As shown in FIG. 4, the blowing chamber 40 includes a chamber top plate 41 forming an upper surface, a chamber side plate 42 forming left and right side surfaces as end plates, a chamber front plate 43 forming a front surface, and a chamber back forming a back surface. It is provided with a face plate 44. The chamber back plate 44 communicates with the blowout opening 15 formed on the front surface of the main body unit 2, and the width L1 in the left-right direction and the width L2 in the vertical direction (see FIG. 2B) of the blowout opening 15 are substantially the same. The mouth 45 is formed. A chamber outlet 46 is formed on the bottom surface side of the outlet chamber 40 over the entire surface.

The horizontal width of the blowout chamber 40 is set longer than the horizontal width of the housing 8 constituting the main body unit 2, and the right chamber side plate 42 is the housing 8 with the blowout chamber 40 attached to the housing 8. The height of the chamber side plate 42 on the left side protrudes from the side plate 10 on the left side, which is the side on which the electrical box 30 of the housing 8 is arranged. , It is designed to protrude from the left side surface of the electrical box 30. Further, the left-right width L3 of the chamber outlet 46 is set longer than the left-right width L1 of the outlet opening 15.

The air flow blown forward from the main body unit 2 through the chamber suction port 45 enters the inside of the blowing chamber 40, and is directed toward the bottom surface of the main body unit 2 by the chamber top plate 41, the left and right chamber side plates 42, and the chamber front plate 43. Since the air is blown out from the chamber air outlet 46, the air blow chamber 40 has a function as a wind direction guide for changing the direction of the air flow. In the present embodiment, the chamber top plate 41, the left and right chamber side plates 42, and the chamber front plate 43 serve as guide portions 47 to perform a guide function of changing the direction of the air flow. Further, since the air flow blown forward from the blowout opening 15 of the main body unit 2 is blown out from the chamber outlet 46 having a width L3 longer than the width L1 in the left-right direction of the blowout opening 15, the blowout chamber 40 has an air flow. It has a function to expand the width of.

Next, the mounting structure of the decorative panel 3 and the main body unit 2 will be described with reference to FIGS. 5 and 6. FIG. 5 is a perspective view of the state in which the decorative panel 3 is removed from the bottom surface of the main body unit 2 for maintenance of the indoor unit 1 installed on the ceiling, as viewed from the lower front side, and FIG. 6 is a main body. It is a perspective view which looked at the state before attaching the decorative panel 3 to the suspension member 100 which will be described later attached to the rear side of the bottom surface of a unit 2 from the lower front side. The decorative panel 3 is detachably attached to the bottom surface of the main body unit 2 by an engaging member (not shown). In order to suspend the decorative panel 3 from the main body unit 2 in a state where the decorative panel 3 is removed from the bottom surface of the main body unit 2, apart from an engaging member (not shown) for attaching the decorative panel 3 to the bottom surface of the main body unit 2. Three suspension members 100 having the same length are arranged between the bottom surface on the rear side of the main body unit 2 and the rear surface on the upper surface of the decorative panel 3. The suspension member 100 includes a decorative panel side terminal 103 formed in a ring shape attached to the decorative panel 3, a main body unit side terminal 102 formed in a ring shape attached to the main body unit 2, a decorative panel side terminal 103, and a main body unit side terminal 102. It has a suspension wire 101 as a connection support member which is connected to and has flexibility. The main body unit side terminal 102 is locked to the hanging member fixing portion 104 fixed to the inner surface of the back plate 13 of the main body unit 2, and the decorative panel side terminal 103 is locked to the hanging member locking portion 105 attached to the upper surface of the decorative panel 3. It is locked.

The hanging wire 101 is a metal wire and has flexibility, and the length is such that the decorative panel 3 is suspended from the main body unit 2, and the rear end edge portion of the decorative panel 3 contacts the main body unit 2. It is long enough not to be used. In the present embodiment, apart from the engaging member (not shown) for attaching the decorative panel 3 to the bottom surface of the main body unit 2, the decorative panel 3 is removed from the main body unit 2 in a state where the decorative panel 3 is removed from the bottom surface of the main body unit 2. In order to suspend the main unit 2, a suspension member 100 is provided between the bottom surface on the rear side of the main body unit 2 and the rear surface on the upper surface of the decorative panel 3. Therefore, the suspension member 100 can be supported by a simple configuration without using a hinge having a complicated structure. Moreover, since the hanging wire 101 is a metal wire and has flexibility, it is easy to design according to the size and shape of the product, and it can be manufactured at low cost. The suspension member fixing portion 104 uses a screw, and the ring-shaped main body unit side terminal 102 is fixed to the main body unit 2 by a screw as the suspension member fixing portion 104. The hanging member locking portion 105 also uses screws, and the ring-shaped decorative panel side terminal 103 is fixed to the decorative panel 3 by the screws as the hanging member locking portion 105.

When the decorative panel 3 is removed from the bottom surface of the main body unit 2 by removing the engaged state of the engaging member (not shown), as shown in FIG. 5, the rear side of the decorative panel 3 is the main body unit 2 with three suspending members 100. It becomes a state of being suspended from the bottom surface on the rear side of the main body unit 2, and the entire bottom surface of the main body unit 2 is exposed. Therefore, the operator may perform maintenance including replacement work of the filter 7, maintenance of the main body unit 2, for example, replacement of electrical components housed in the electrical box 30, replacement of the motor of the sirocco fan 20, and the main body unit. By removing the bottom plate 11 of 2, maintenance including replacement of the indoor heat exchanger 19 and the drain pan 21 can be easily performed. Further, since the rear side of the decorative panel 3 is suspended from the rear bottom surface of the main body unit 2 by the hanging member 100, the removed decorative panel 3 is not bothered to be placed on the floor or handed over to another worker. Since maintenance can be performed, work efficiency can be improved.

Normally, the decorative panel 3 is not attached to the main body unit 2 at the time of shipment from the factory, and the main body unit 2 and the decorative panel 3 are sent to the site separately. Is attached to the building, and then the decorative panel 3 is attached to the main body unit 2. At the time of shipment from the factory, the suspension member 100 is attached to the main body unit 2. First, the main body unit 2 is attached to the building at the site. When the main body unit 2 is attached to the building, as shown in FIG. 6, since the hanging wire 101 of the hanging member 100 has flexibility, the hanging member 100 is in a state of being suspended from the main body unit 2. .. Next, the decorative panel 3 is attached to the hanging member 100 in a suspended state. At the site, since the work is only to attach the decorative panel 3 to the hanging member 100 in the suspended state, the decorative panel 3 can be easily attached to the hanging wire 101.

In the present embodiment, the suspension member 100 uses a flexible metal wire, but the suspension member 100 is not limited to the metal wire as long as it has flexibility and is strong enough to support the weight of the decorative panel 3. It may be a resin member containing a carbon fiber material or the like. Further, it may be a metal chain.

Next, with reference to FIGS. 6 to 8, the structure in which the decorative panel 3 is attached to the bottom surface of the main body unit 2 will be described. In FIG. 6, the upper side of FIG. 6 is the upper surface (upper side), the lower side is the bottom surface (lower side), the left side is the right side surface (right side), the right side is the left side surface (left side), and the front side of the paper is the front surface (front). ), The back side of the paper is expressed as the back side (rear side). The decorative panel 3 is detachably attached to a mounting bracket 23 attached to the bottom surface of the main body unit 2 with screws. As shown in FIG. 7, the width of the decorative panel 3 in the left-right direction is larger than the width of the main body unit 2 in the left-right direction, and the decorative panel 3 is attached to the left side of the main body unit 2 in the left-right direction. Has been done. Therefore, when the decorative panel 3 is attached to the main body unit 2 attached to the ceiling, a large work space 50 is secured between the left side surface of the main body unit 2 and the inner peripheral surface of the ceiling opening 60 formed in the ceiling. To. The suction port 5 is formed to be symmetrical in the left-right direction on the decorative panel 3, and the suction grill 4 covering the suction port 5 is attached to the lower surface of the decorative panel 3 so as to be symmetrical in the left-right direction. ing.

The width of the decorative panel 3 in the left-right direction is larger than the width of the main body unit 2 in the left-right direction. Since the suction port 5 is formed so as to be symmetrical in the left-right direction, the suction port inner peripheral surface 27, which is the inner peripheral surface of the suction port 5, has the same surface height as the side surface of the electrical box 30. It is arranged on the outer side of the left side of the above, and beyond the left side in FIG. 7. Between the bottom surface on the right side of the main body unit 2 and the inner side surface 28 of the decorative panel, which is the inner surface of the decorative panel 3, a heat insulating material 24 that prevents communication between the space behind the ceiling and the suction opening 14 is provided on the inner surface of the decorative panel. It is attached to 28. On the other hand, the suction port inner peripheral surface 27 is beyond the outer side of the side surface of the electrical box 30 which is the left side surface of the main body unit 2 (the electrical box front plate 34 constituting the left side surface of the electrical box 30) ( In FIG. 7, since it is arranged (on the left side from the side surface of the electrical box), that is, on the inside of the decorative panel facing the bottom surface on the left side of the main body unit 2, the inner side surface 28 of the decorative panel is provided with the opening of the suction port 5. Therefore, unlike the right side of the main body unit 2, the heat insulating material 24 cannot be attached between the bottom surface on the left side of the main body unit 2 and the inner side surface 28 of the decorative panel. Therefore, between the bottom surface of the electrical box 30 which is the bottom surface on the left side of the main body unit 2 and the inner side surface 28 of the decorative panel, a windshield 25 for obstructing communication between the space behind the ceiling and the suction opening 14 is provided. It is provided.

With the decorative panel 3 attached to the main body unit 2, the front flange 55 provided on the front side of the windbreak plate 25 so that the upper surface of the windshield 25 is close to the bottom surface of the electrical box 30 of the main body unit 2. The two sides of the rear flange 56 provided on the rear surface side are supported by the decorative panel 3 as shown in FIGS. 1B and 5, and the windshield 25 is attached to the decorative panel 3 by screws. Therefore, it is possible to prevent the space behind the ceiling from communicating with the suction opening 14, so that it is possible to prevent the air behind the ceiling from entering the suction opening 14. Further, a clearance 29 is provided between the bottom surface of the windshield 25 and the inner side surface 28 of the decorative panel which is the inner side surface of the decorative panel 3. Since the clearance 29 is provided, the space formed by the bottom surface of the windshield 25 and the inner surface of the decorative panel 3 functions as an air passage, and the suction port 5 (the shaded portion in FIGS. 6 and 7). All of the openings in can be used effectively. An opening (not shown) is formed in the windshield 25, and a lid 52 is attached to the opening. The opening is used to confirm that the cable is not sandwiched between the bottom surface of the main body unit 2 and the upper surface of the windshield 25 when the decorative panel 3 is attached to the main body unit 2.

In the present embodiment, the windbreak plate 25 is attached to the decorative panel 3, but if the structure obstructs the communication between the space behind the ceiling and the suction opening 14, the windshield 25 may be attached to the main body unit 2. I do not care. However, when the decorative panel 3 is removed from the main body unit, if the windbreak plate 25 is attached to the main body unit 2, the windshield 25 protrudes from the main body unit 2, which may hinder the work. It is desirable that the windshield 25 is attached to the decorative panel 3. Further, although the windshield 25 has a plate-like structure, the windshield 25 does not have to be plate-shaped, and may have another shape formed by bending a sheet metal or the like.

Further, in the present embodiment, a windshield 25 is provided between the bottom surface of the electrical box 30 and the inner side surface 28 of the decorative panel to prevent communication between the space behind the ceiling and the suction opening 14. When the suction port inner peripheral surface 27 on the side where the box 30 is not arranged is arranged beyond the side surface of the main body unit 2, it is between the bottom surface of the main body unit 2 and the inner side surface 28 of the decorative panel. The windshield 25 may be provided in the windshield 25. Since the electrical box 30 is also a part of the main body unit 2, the windshield 25 may be arranged between the bottom surface of the main body unit 2 and the inner side surface 28 of the decorative panel.

FIG. 7 is a perspective view of a state in which the decorative panel 3 is removed from the bottom surface of the main body unit 2 installed on the ceiling and the decorative panel 3 is suspended from the lower front side. The two-dot chain line shown in FIG. 7 indicates a ceiling opening 60 provided on the ceiling for installing the indoor unit 1. The electrical box bottom plate 31, which is the bottom surface of the electrical box 30, is exposed on the bottom surface side of the main body unit 2, and the second inspection lid 38 constituting the side surface of the electrical component box 30 is exposed on the side surface side of the main body unit 2. Is arranged in the main body unit 2, so that when the decorative panel 3 is removed from the main body unit 2, the electrical box bottom plate 31 of the electrical box 30 is exposed. Further, since the indoor unit 1 of the present embodiment is attached to the main body unit 2 so that the outlet chamber 40 projects toward the electrical box 30, the ceiling opening 60 is as shown by shading in FIG. 7. A work space 50 is secured. Therefore, it can be confirmed that the second inspection lid 38 is also exposed through the ceiling opening 60.

Next, a case of inspecting the indoor unit 1 of the present embodiment will be described. When the decorative panel 3 is removed from the bottom surface of the main body unit 2 installed on the ceiling and the decorative panel 3 is suspended, the electrical box 30 is exposed through the ceiling opening 60, so that the first inspection lid 37 and the second inspection lid 37 are exposed. 38 can be removed so that the electrical box bottom opening 35 and the electrical box front opening 36 appear, tools and the like can be inserted from the electrical box front opening 36, and the electrical box bottom opening 35 can be inspected as a visual window. ..

As in the past, if the inspection port is provided on only one of the bottom or the side of the electrical box, the tool or hand is put in one inspection port, so the tool or hand gets in the way and the electrical equipment is installed. There was a problem that the inside of the box could not be clearly seen, but in the indoor unit 1 of the present embodiment, since the two inspection ports of the bottom opening 35 of the electrical box and the front opening 36 of the electrical box are provided, the front opening of the electrical box is provided. By using 36 for work and using the opening 35 on the bottom of the electrical box for visual recognition, the inside of the electrical box can be visually recognized without the tools and hands getting in the way, so that workability when inspecting electrical components can be improved. Can be done.

Further, since the two inspection ports of the bottom opening 35 of the electrical box and the front opening 36 of the electrical box are provided, the light of the lighting can be input through the two inspection ports, so that the electrical equipment is compared with the case where the inspection port is one. Since the inside of the box 30 can be brightly illuminated, workability when inspecting electrical components can be improved.

Further, when the decorative panel 3 is removed from the bottom surface of the main body unit 2 installed on the ceiling, the decorative panel 3 is in a suspended state, so that the worker can carry the removed decorative panel 3 to the floor. The filter 7 provided on the suction grill 4 of the decorative panel 3 can be easily cleaned and the filter 7 can be easily replaced without getting off the ladder or the like.

In the indoor unit 1 of the present embodiment, the first inspection lid 37 provided in the bottom opening 35 of the electrical box and the second inspection lid 38 provided in the front opening 36 of the electrical box are separated. Therefore, for example, the electrical box 30 If you just want to check the display status of the electronic display device installed inside the box, you can do it by simply removing the first inspection lid 37 from the bottom side without removing the second inspection lid 38. , Workability when inspecting electrical components can be improved.

In the present embodiment, the electrical box 30 is arranged inside the corner formed by the back surface and the left side surface of the housing 8, that is, inside the main body unit 2, but the electrical box bottom opening 35 is provided. If the electrical box 30 is arranged in the housing 8 so that the electrical box front opening 36 is exposed on the bottom surface side of the main body unit 2 and the electrical box front opening 36 is exposed on the side surface side of the main body unit 2, for example, the side plate 10 of the housing 8 The electrical box 30 may be attached to the outer side surface.

In the present embodiment, the end surface of one chamber side plate 42 of the blowout chamber 40 protrudes from the side surface of the main body unit 2 on the side where the electrical box 30 is arranged, but it does not necessarily have to protrude. However, since a work space for inspection can be secured, the end surface of one chamber side plate 42 of the blowout chamber 40 protrudes from the side surface of the main body unit 2 on the side where the electrical box 30 is arranged, as in the present embodiment. It is desirable to be.

Further, in the present embodiment, the end surface of the other chamber side plate 42 of the blowing chamber 40 has the same surface height as the side surface of the main body unit 2 opposite to the side on which the electrical box 30 is arranged. However, the end faces of the chamber side plates 42 on both sides may protrude from the side surfaces on both sides of the main body unit 2. However, when packing with the packing material in the state where the blowing chamber 40 is attached to the main body unit 2, the structure of the packing material becomes simpler when the protruding portion is smaller, so that only the end surface of one chamber side plate 42 of the blowing chamber 40 is used. However, it is desirable that the main body unit 2 protrudes from the side surface on the side where the electrical box 30 is arranged.

Further, in the present embodiment, the blowing chamber 40 is formed in a box shape having end plates at both ends on the side side and openings on the bottom surface side and the back surface side, but the chamber suction port 45 on the back surface side is formed. If the chamber outlet 46 on the bottom side and the guide portion 47 arranged between the chamber suction port 45 and the chamber outlet 46 are provided, the shape does not need to be box-shaped, for example, the chamber suction port 45 and the chamber. It may be a 1/4 cylindrical column formed of a plate bent in an arc shape between the air outlets 46, or a triangular columnar shape formed in a slope shape between the chamber suction port 45 and the chamber air outlet 46.

Although the above description has been made with reference to a limited number of embodiments, the scope of rights is not limited thereto, and modifications of the embodiments based on the above disclosure are obvious to those skilled in the art.

1 ... Indoor unit, 2 ... Main unit, 3 ... Decorative panel, 5 ... Suction port, 6 ... Blowout port, 8 ... Housing, 14 ... Suction opening, 15 ... Blowout opening, 17 ... Heat exchanger room, 18 ... Blower Room, 19 ... Indoor heat exchanger, 20 ... Sirocco fan, 24 ... Insulation material, 25 ... Windshield, 26 ... Partition plate, 27 ... Suction port inner peripheral surface, 28 ... Decorative panel inner surface, 30 ... Electrical box, 31 ... Electrical box bottom plate, 32 ... Electrical box side plate, 33 ... Electrical box back plate, 34 ... Electrical box front plate, 35 ... Electrical box bottom opening (first inspection port), 36 ... Electrical box front opening (second inspection port) , 37 ... 1st inspection lid, 38 ... 2nd inspection lid, 39 ... Reinforcing rail, 40 ... Blow-out chamber, 41 ... Chamber top plate, 42 ... Chamber side plate, 43 ... Chamber front plate, 44 ... Chamber back plate, 45 ... Chamber suction port, 46 ... Chamber outlet, 47 ... Guide part, 50 ... Work space, 52 ... Lid, 55 ... Front side flange, 56 ... Rear side flange, 60 ... Ceiling opening, 100 ... Suspension member, 101 ... Suspension wire , 102 ... Main unit unit side terminal, 103 ... Decorative panel side terminal, 104 ... Suspended member fixing portion, 105 ... Suspended member locking portion

Claims (5)

It has a blowout opening formed on the bottom surface on the front side, a suction opening formed on the bottom surface on the rear side, a heat exchanger chamber arranged on the front side inside, and a blower chamber arranged on the rear side inside. Main unit and
An electrical box placed in the main unit and accommodating electrical equipment,
A decorative panel attached to the bottom surface of the main body unit and formed with an air outlet and a suction port is provided.
In a ceiling-embedded air conditioner in which the main unit is installed behind the ceiling of the building,
A ceiling space and a suction opening are provided between the inner side surface of the decorative panel on the side where the inner peripheral surface of the suction port is arranged so as to extend beyond the side surface of the main body unit and the bottom surface of the main body unit. A ceiling-embedded air conditioner characterized by being provided with a windshield that obstructs the communication of air conditioners. The ceiling-embedded air conditioner according to claim 1, wherein the upper surface of the windshield is close to the bottom surface of the main body unit. The ceiling-embedded type according to claim 1 or 2, wherein the front surface side and the rear surface side of the windshield are supported by the decorative panel, and the windshield is attached to the decorative panel. Air conditioner. The ceiling-embedded air conditioner according to any one of claims 1 to 3, wherein a clearance is provided between the bottom surface of the windshield and the inner surface of the decorative panel. .. The electrical box is arranged on one side surface side of the main body unit.
The ceiling embedding according to any one of claims 1 to 4, wherein the windshield is provided between the inner side surface of the decorative panel and the bottom surface of the main body unit on one side surface side of the main body unit. Type air conditioner.

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