JP2006097937A - Ceiling embedded type air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling embedded type air conditioner enlarging strength of a drain pan, and contributing to reduction of the number of components, reduction of manhours, and reduction of costs. <P>SOLUTION: The ceiling embedded type air conditioner is provided with a casing 1 partitioned into two chambers 7A and 7B in a width direction by a partition plate 6, a heat exchanger 9 and the drain pan 10 arranged in one chamber, a blower 8 arranged in the other chamber, a communication hole 6a provided on the partition plate to guide air blown from the blower to the heat exchanger, and a decorative panel 2 fit on a casing lower face opening, and provided with a blowout opening 15 exposed to a room and facing the heat exchanger, and a suction opening 12 facing the blower. The blowout opening is opened throughout a longitudinal length of the decorative panel, the drain pan is a synthetic resin foamed product arranged along a substantially whole longitudinal length of the casing, a reinforcing fitting 17 is embedded throughout a longitudinal direction of the drain pan, both side ends of the reinforcing fitting is protruded from both drain pan side parts and fixed to the casing, and the partition plate is provided with a latch part 20 for fitting in a side part (a) of the drain pan. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a one-way blowout ceiling-embedded air conditioner that includes a decorative panel formed in a horizontally-long rectangular shape, and is provided with one blowout opening over substantially the entire length in the longitudinal direction of the decorative panel.

When air-conditioning a wide space such as a store as an indoor unit of an air conditioner, heat exchange air can be blown out uniformly over a wide range from the ceiling surface rather than the so-called wall-mounted type attached to the wall surface, In addition, there is a tendency to frequently use air conditioners that are embedded in the ceiling that are less squeezed by residents.
This type of air conditioner is disclosed in [Patent Document 1], specifically, a blower chamber in which an air conditioner main body (hereinafter referred to as a housing) is arranged by a partition plate and a blower is disposed; It is divided into heat exchanger chambers where heat exchangers are placed. A decorative panel is provided at the opening on the lower surface of the housing, and a suction port and a blow-out port are opened here. By driving the blower, indoor air is sucked from the suction port and is led to the heat exchanger chamber to exchange heat with the heat exchanger. The heat-exchanged air is blown out into the room through the blowout port, and air-conditions the room.
The decorative panel is formed in a horizontally-long rectangular shape in accordance with the shape of the lower surface opening of the housing. The suction port is provided as large as possible in order to uniformly apply the sucked air to the entire heat exchanger, and occupies substantially half the area of the decorative panel. The blowing outlet is preferably formed as long as possible from the characteristics of the blowing air, and is provided along one side edge of the decorative panel and over substantially the entire length in the longitudinal direction to form a one-way blowing.
Japanese Patent No. 2902857

By the way, a drain pan for receiving condensed water (drain water) generated in the heat exchanger during cooling operation and draining it outdoors is attached to the lower part of the heat exchanger. The drain pan is formed in a plan view area that is slightly larger than the plan view area of the heat exchanger in order to reliably capture the condensed water dripping from the heat exchanger.
In general, the drain pan is a foam molded article made of a foamable synthetic resin material, and is not high in strength due to its composition. Since there is a difficulty in mounting and fixing to the housing as it is, the support of the drain pan is supported by attaching a support plate processed with sheet metal etc. to the lower part of the drain pan and screwing it to the main body or partition plate at several places on the support plate. There is no.
In such a normal structure, the drain pan is securely attached and fixed to the housing. However, since a separate support plate is required in addition to the drain pan, the number of parts increases and the part cost increases. Further, since dust or the like floating in the air accumulates on the drain pan in addition to the dew condensation water, it is necessary to remove these deposits in a timely manner, and it takes time and effort not only to install but also to remove.

  The present invention has been made paying attention to the above circumstances, and the purpose thereof is to increase the strength while maintaining the material composition of the drain pan, and to be a separate component for mounting the drain pan to the air conditioner body. Therefore, it is intended to provide a ceiling-embedded air conditioner that contributes to the reduction of man-hours and costs by reducing the number of parts and speeding up the work of removing and installing the drain pan.

In order to solve the above problems and achieve the object, the ceiling-embedded air conditioner of the present invention is mounted on the back of the ceiling of the air-conditioned room, has an open rectangular bottom, and is partitioned into two chambers by a partition plate. The main body of the machine, a heat exchanger arranged in one chamber, a drain pan arranged in the lower part for receiving drain water, a blower arranged in the other chamber, and a wind blown from the blower provided in the partition plate And a decorative panel provided at the lower surface opening of the air conditioner main body and exposed to the air-conditioned room and facing the heat exchanger and having a blowout port and a blower port facing the blower,
The drain pan is a synthetic resin foam molded product, and reinforcing metal fittings are embedded in the longitudinal direction of the drain pan. Both end portions of the reinforcing metal metal metal protrude from both sides of the drain pan and are fixed to the air conditioner body. A latching portion into which the side of the drain pan is fitted is provided.

  According to the present invention, the number of parts can be reduced while increasing the strength of the drain pan, and the drain pan can be attached and removed quickly, thereby contributing to reductions in man-hours and costs.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is an exploded perspective view of a ceiling-embedded air conditioner according to an embodiment of the present invention, FIG. 2 is a sectional view of the air conditioner, and FIG. 3 is a bottom view of the air conditioner with a decorative panel removed. is there.
An air conditioner main body (as an embedded ceiling type air conditioner) that is inserted into an opening for installation provided on a ceiling plate of an air-conditioned room and is suspended and fixed to the back of the ceiling (not shown) via suspension bolts or the like ( (Hereinafter referred to as a housing) 1.

The casing 1 has an entire lower surface opened, and a decorative panel 2 is attached to the opening 1a. The decorative panel 2 is exposed to the room in a state where it is attached to the housing 1 and at a height position that matches the ceiling plate. And the decorative panel 2 has shielded the clearance gap between the opening part for attachment provided in a ceiling board, and the housing | casing 1 side part.
The casing 1 is molded into a horizontally-long rectangular box shape whose longitudinal direction is longer than the width direction which is a direction orthogonal to the longitudinal direction. The exterior of all other surface portions except the lower surface opening 1a is formed by sheet metal processing of a metal thin plate, and a heat insulating material is incorporated on the inner surface to form a heat insulating structure.

A pair of mounting brackets 3 are attached to both side surfaces 1b in the width direction of the housing 1 so as to be separated from each other. Each mounting bracket 3 is a hanging bracket portion 3A whose upper end protrudes horizontally from the housing side surface portion 1b. 3 A of said suspension metal fittings are notched from the protrusion edge toward the side part 1b, and this notch part is latched by the suspension bolt (not shown) suspended from the ceiling back.
Further, the mounting bracket 3 is integrally provided with a fixing bracket portion 3B which is bent along the lower end of the casing 1 forming the lower surface opening 1a. The fixing metal part 3B is provided with three screw holes at a predetermined interval along the width direction of the housing 1, but one side of the housing 1 in the width direction (upper side in FIG. 3). The screw holes on both sides of all the fixing metal parts 3B are for fixing screws for attaching the decorative panel 2 to the housing 1, except that only the screw hole at the center part of the fixing metal part 3B is used for attaching the drain pan 10 described later. Used.

Two refrigerant connection pipes 4 and one end of one cable pipe 5 protrude from the side surface 1b of one side of the housing 1 (the right side surface in FIGS. 1 and 3) in the vicinity of the mounting bracket 3. . The refrigerant connection pipe 4 communicates with a heat exchanger 10 (described later) disposed in the housing 1, and the refrigerant connection pipe 4 has refrigerant transition pipes (neither shown) extending from the outdoor unit. Connected. A crossover cable (not shown) that is electrically connected to the indoor unit, the outdoor unit, and the power supply unit is inserted into the cable pipe 5.
A partition plate 6 is provided over the longitudinal direction of the casing at approximately half the position in the width direction in the casing 1. Therefore, the inside of the housing 1 is divided into two chambers 7A and 7B in the width direction by the partition plate 6.
One chamber partitioned by the partition plate 6 inside the housing 1 is called a blower chamber 7A, and a blower 8 is disposed here. The other chamber divided by the partition plate 6 is referred to as a heat exchange chamber 7B, in which a heat exchanger 9 and a drain pan 10 are disposed below the heat exchanger.

The blower 8 is provided with a fan motor FM at the center, and this fan motor is a biaxial motor in which the rotating shaft n protrudes from the left and right sides. Each rotary shaft n is connected to a fan (so-called multi-blade fan) F of a type that sucks air from the axial direction and blows it out in the circumferential direction as it rotates, and each fan F is surrounded by a fan casing 8a. Bend.
The fan casing 8a is attached and fixed to the upper surface portion of the housing 1, and an opening through which the rotation shaft n of the fan motor FM is inserted is provided on one side, and an opening for air suction guidance is provided on the other side. m is provided.

A blower outlet K is projected from the end of the fan casing 8a on the side of the partition plate 6 and is fixed to the partition plate 6. That is, a communication hole 6a is opened in the partition plate 6, and the outlet port K of the fan casing 8a is connected thereto. Accordingly, the communication hole 6a can guide the air blown from the blowout opening K of the fan casing 8a to the heat exchange chamber 7B side as the blower 8 is driven.
On the other hand, the heat exchanger 9 disposed in the heat exchange chamber 7B is on a tray-like drain pan 10 described later, and is disposed in a posture in which the vertical direction is inclined obliquely. This is because the vertical dimension of the heat exchanger 9 cannot be set to a sufficient length because the vertical dimension of the housing 1 is shortened as much as possible to reduce the thickness.

On the other hand, it is necessary to secure the heat exchange area of the heat exchanger 9 as much as possible to improve the heat exchange efficiency. Therefore, it is possible to ensure a sufficient heat exchange area while suppressing the vertical dimension in a state where the heat exchanger 9 is inclined obliquely in the vertical direction.
When such a heat exchanger 9 is seen in a plan view, the plan view area of the drain pan 10 is formed larger than the plan view area. Therefore, when the cooling operation described later is performed, the drain pan 10 can reliably capture the dew condensation water (drain water) generated in the heat exchanger 9 during the operation.

On the other hand, the decorative panel 2 is composed of a molded product of a synthetic resin material in order to obtain a light weight and an improved aesthetic appearance. Since this decorative panel 2 is fitted into the lower surface opening 1a of the housing 1, it has a horizontally long rectangular shape whose longitudinal direction is longer than the width direction in accordance with the shape of the lower surface opening.
A suction port 12 is opened at one side of the decorative panel 2 in the width direction, and a suction grill 13 is fitted therein. The suction grill 13 is provided separately from the decorative panel 2, but may be integrally formed with the decorative panel 2. The suction grill 13 is covered with a filter 14 that is detachably attached to the back surface of the decorative panel 2.
In a state where the decorative panel 2 is attached to the lower surface opening 1a of the housing 1, the suction grill 13 is formed at a portion facing the blower chamber 7A. Since the longitudinal direction of the suction grill 13 is provided over substantially the entire length of the decorative panel 2 in the longitudinal direction, it substantially coincides with the longitudinal direction of the housing lower surface opening 1a.

One side edge of the suction grill 13 in the width direction is formed in the vicinity of one side edge of the decorative panel 2, and the other side edge is set at a position facing the lower end of the partition plate 6. Accordingly, the suction grill 13 is formed to have substantially the same shape and area as the entire air blowing chamber 7A.
A blowout port 15 is opened along the other side edge of the decorative panel 2 in the width direction, and a louver 16 is pivotally attached to the blowout port. A drive source 16M is attached to one side of the outlet 15 and is connected to the louver 16 via a connection mechanism (not shown). When the drive source 16M is driven, the louver 16 is controlled to rotate, and the blowing angle from the blowing port 15 can be adjusted. The outlet 15 is formed in a portion facing the blower chamber 7 </ b> A in a state where the decorative panel 2 is attached to the lower surface opening 1 a of the housing 1.
The blowout port 15 will be described. The blowout port is provided along a side edge along the longitudinal direction of the decorative panel 2 that is parallel to the partition plate 6 at a predetermined interval. The outlet 15 is opened over substantially the entire length in the longitudinal direction of the decorative panel 2 and has a horizontally long shape whose width direction is extremely short with respect to the longitudinal direction.

Next, the drain pan 10 will be described in detail.
The drain pan 10 is a molded product obtained by foaming a foamable synthetic resin material such as urethane foam, for example, and both side portions 10a along the width direction thereof are fitted along the width direction both side portions 1b of the housing 1. .
That is, the length of the drain pan 10 in the longitudinal direction is set to be substantially the same as the length of the heat exchange chamber 7 </ b> B formed in the housing 1. One side part a along the longitudinal direction of the drain pan 10 is hooked to the lower end part of the partition plate 6 as described later, and the other end part b is supported by the side end part of the outlet 15. In other words, the drain pan 10 is disposed over the entire surface of the heat exchange chamber 7 </ b> B except for the portion facing the outlet 15.
And since the drain pan 10 is a foam molded product, reinforcing ribs R are integrally provided on the lower surface and the side surface in order to ensure strength. Further, in order to ensure the strength of the drain pan 10, a reinforcing metal fitting 17 described later is embedded (insert molding) along the side end portion on the outlet 15 side.

FIG. 5A is a plan view of the reinforcing bracket 17, and FIG. 5B is a partial perspective view of the reinforcing bracket 17.
The reinforcing metal fitting 17 is obtained by sheet metal processing a metal thin plate, and both side end portions are flat mounting portions 17a. Most of the both-side mounting portions 17a sandwiched between each other is a straight long reinforcing portion 17b whose cross section is bent in a deformed U shape.
Actually, the reinforcing portion 17 b of the reinforcing metal fitting 17 is completely embedded in the drain pan 10, and most of the both side mounting portions 17 a, at least the tip portion, are formed so as to protrude from the drain pan 10.
A mounting hole 18 is provided at the tip of the mounting portion 17a that reliably projects from the drain pan 10. In the reinforcing portion 17b, one bent side piece is formed longer than the other bent side piece, and a plurality of hole portions 19 are provided at predetermined intervals. The foamed synthetic resin material freely flows through the hole 19 and solidifies in a state where the reinforcing metal fitting 17 is insert-molded in the drain pan 10, so that the reinforcing metal fitting 17 is reliably embedded in the drain pan 10.

FIG. 4 is a view for explaining a state in which one side portion a of the drain pan 10 is fitted and fixed to the partition plate 6.
The partition plate 6 is provided with a latching portion 20 having a U-shaped cross section over the entire length in the longitudinal direction of the partition plate at a lower portion of the communication hole 6a.
In terms of work, the drain pan 10 is held, and the one side portion a along the longitudinal direction is opposed to the latching portion 20 of the partition plate 6 and fitted. Since the partition plate 6 is provided along the longitudinal direction of the housing 1 and the latching portion 20 is provided along the longitudinal direction of the partition plate 6, the drain pan 10 is fitted into the latching portion 20 over the entire length in the longitudinal direction. Will be.
In addition, when the other side portion b along the longitudinal direction of the drain pan 10 is aligned with the lower surface opening portion 1a of the housing 1, as shown in FIG. 3, the attachment projecting from the left and right side portions 10a of the drain pan 10 of the reinforcing bracket 17 is performed. The portion 17a faces the fixing bracket portion 3b of the mounting bracket 3 provided on the lower surface of the left and right side portions 1b of the casing.

Since the mounting hole 18 of the reinforcing bracket mounting portion 17b communicates with the screw hole of the fixing bracket portion 3B, the fixing screw can be inserted into the mounting hole 18 from the lower surface side of the housing 1 and screwed into the screw hole. Thus, both side portions a and b of the drain pan 10 are attached and fixed to the housing 1. Therefore, the drain pan 10 can be quickly attached and fixed to the housing 1.
The drain pan 10 is removed by removing the fixing screw inserted into the mounting hole 18 and removing one side portion a of the drain pan 10 from the latching portion 20 of the partition plate 6. Can be removed from. Actually, it is necessary to remove the decorative panel 2 from the housing 1 in advance, but it goes without saying that the drain pan 10 can be quickly removed from the housing 1.

In the ceiling-embedded air conditioner configured as described above, when the blower 8 is driven, room air is sucked into the blower chamber 7 </ b> A in the housing 1 through the suction grille 13 and the filter 14. The room air is guided to the heat exchange chamber 7B through the fan casing 8a constituting the blower 8 and the communication hole 6a provided in the partition plate 6, and exchanges heat with the heat exchanger 9.
The heat exchange air after heat exchange with the heat exchanger 9 is guided to the blowout port 15 and blown out into the room through the louver 16 to perform a heat exchange action in the room. During the cooling operation, condensed water is generated and dripped with the heat exchange action of the heat exchanger 9. All the dew condensation water is collected by the drain pan 10 and finally drained to the outside.

In any of the air conditioning operations of the cooling operation and the heating operation, the heat exchange air is blown out from one blowout port 15 provided in the decorative panel 2. However, by controlling the attitude of the outlet 15 with respect to the louver 16, heat exchange air can be blown out and guided uniformly over a wider area in the room, and an efficient air conditioning operation can be obtained.
And since the said blower outlet 15 is provided along the one side edge of the width direction of the decorative panel 2, and is opened over the substantially full length of the longitudinal direction of the decorative panel 2, it is a wider range with respect to a room | chamber interior The blowout characteristics are good even with one-way blowout.

In addition, in order to distribute | circulate heat exchange air efficiently, the said blower outlet 15 cannot arrange | position the member used as resistance of distribution | facing facing a blower outlet. Therefore, it must be avoided that a part for mounting to the housing 1 with respect to the drain pan 10 arranged along the side portion of the outlet 15 protrudes toward the outlet.
Since the blowout port 15 itself is provided in the decorative panel 2 with low strength and is open over substantially the entire length in the longitudinal direction of the decorative panel, the strength of the peripheral portion forming the blowout port 15 is low. On the other hand, since the drain pan 10 is a foam molded product, its strength is low as it is.

Here, since the reinforcing metal fitting 17 is embedded along the longitudinal direction of the drain pan 10, it is useful for increasing the strength of the drain pan itself. In the state where the drain pan 10 is attached to the housing 1, the reinforcing metal fitting 17 is provided along the side portion of the blowout port 15 and over the entire length of the blowout port, which is useful for increasing the strength of the blowout port. .
The mounting portion 17b of the reinforcing metal fitting 17 embedded along the one side portion b of the drain pan 10 protrudes from the drain pan and is fixedly attached to both side portions of the housing 1. Therefore, the reinforcing metal fitting 17 is attached to the lower surface opening of the housing 1. Reinforces 1b.

And since one side part a of the drain pan 10 is engage | inserted in the latching | locking part 20 provided in the partition plate 6 over the full length, both sides a and b along a longitudinal direction are directly or indirectly attached to the housing | casing 1. It will be attached and fixed, and it is attached and fixed to the housing with sufficient strength as a whole while being a foam molded product.
Further, as described above, not only can the drain pan 10 be quickly attached to the housing 1 but also the drain pan 10 can be quickly removed from the housing 1 to improve workability. is there.
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

1 is an exploded perspective view of a ceiling-embedded air conditioner according to an embodiment of the present invention. Sectional drawing of the ceiling embedding type air conditioner based on the embodiment. The top view in the state which removed the decorative panel of the ceiling embedded type air conditioner based on the embodiment. The figure explaining the attachment to the air conditioner main body of the drain pan based on the embodiment. The top view and partial perspective view of a reinforcement metal fitting based on the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1a ... Lower surface opening part, 6 ... Partition plate, 7B ... Heat exchange chamber, 7A ... Blower chamber, 1 ... Case (air conditioner main body), 9 ... Heat exchanger, 10 ... Drain pan, 8 ... Blower, 6a ... Communication Hole: 15 ... Outlet, 12 ... Suction port, 2 ... Cosmetic panel, 17 ... Reinforcing metal fitting, 20 ... Hook.

Claims (2)

An air conditioner body that is attached to the ceiling of the air-conditioned room, has a rectangular lower surface that is opened, and is partitioned into two chambers by a partition plate;
A heat exchanger disposed in one chamber in the air conditioner body, a drain pan disposed in a lower portion of the heat exchanger and receiving drain water generated by the heat exchanger, a blower disposed in the other chamber,
A communication hole provided in the partition plate for guiding the air blown from the blower to the heat exchanger;
A decorative panel attached to the lower surface opening of the air conditioner body and exposed to the air-conditioned room, provided with a blowout opening facing the heat exchanger, and provided with a suction opening facing the blower. ,
The drain pan is a synthetic resin foam molded product,
Reinforcing metal fittings are embedded along the longitudinal direction of the drain pan, and both end portions of the reinforcing metal metal fittings protrude from both side of the drain pan and are fixed to the air conditioner body.
The ceiling-embedded air conditioner, wherein the partition plate includes a hook portion into which a side portion of the drain pan is fitted. The outlet is provided along one side edge of the decorative panel,
The drain pan is disposed between the side edge opposing portion of the outlet and the partition plate,
The reinforcing bracket is embedded in the side end on the outlet side,
The ceiling-embedded air conditioner according to claim 1, wherein the hooking portion is provided over the entire length of the partition plate, and a drain pan side portion is fitted over the entire length in the longitudinal direction.

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