KR100513092B1 - Air Conditioner - Google Patents

Abstract

The present invention allows the relative distance between the centrifugal blower and the bell mouse to be maintained at a predetermined value in a ceiling-embedded or ceiling-loaded air conditioner. The indoor unit 1 includes a heat exchanger 27 including a substantially spherical casing 11, a centrifugal blower 17, a plurality of recesses 27a and 27c, and a plurality of convex portions 27b and 27d. And a drain plate 25, a bell mouth 18, and an electrical device box 16. The electric device box 16 is a device for storing electric devices used for driving control and the like, and has a shape extending from the ceiling of the casing 11 to the bell mouth 18. The electrical device box 16 is disposed between the outer circumferential portion of the centrifugal blower 17 and one of the convex portions 27b of the heat exchanger 27 to support the bell mouth 18.

Description

Air Conditioner {Air Conditioner}

TECHNICAL FIELD The present invention relates to an air conditioner, in particular, a ceiling buried type or a ceiling dripping type air conditioner.

An air conditioner mainly consists of the outdoor unit containing a compressor, a heat exchanger, etc., and the indoor unit containing a centrifugal blower or a heat exchanger. As indoor units, various types of indoor units such as wall-mounted, ceiling-embedded, and ceiling dripping types are provided.

The indoor unit of the ceiling embedding type or the ceiling dropping type is mainly disposed so as to surround a casing including an intake port and a plurality of ejection openings on the lower surface, a centrifugal blower disposed inside the casing, a bell mouse disposed above the intake port, and a centrifugal blower. Heat exchanger is provided. Moreover, inside the indoor unit, the electrical device box which accommodated the electrical device used for operation control of an air conditioner, etc. is arrange | positioned.

As a conventional electric device box of an indoor unit, there is one disposed in the outer circumference of a bell mouse as disclosed in Japanese Patent Laid-Open No. 1992-236024 (see the electric device box 56 indicated by dotted lines in FIGS. 2 and 3).

However, in the electric device box of the air conditioner, the weight of the electric device box acts on the outer peripheral part of the bell mouse, and there is a fear that the vertical position of the bell mouse changes. On the other hand, since the centrifugal blower is mounted on the ceiling of the casing, the vertical position is kept constant. For this reason, the relative distance between a centrifugal blower and a bell mouse may change from a predetermined value, and there exists a possibility that the blowing performance of a centrifugal blower may fall.

An object of the present invention is to maintain the relative distance between the centrifugal blower and the bell mouse in a ceiling-embedded or ceiling-dripping air conditioner.

1 is a perspective view showing the appearance of the indoor unit of the air conditioner according to an embodiment of the present invention.

Figure 2 is a bottom view showing the interior of the indoor unit of the air conditioner according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating the A-O-A cross section of FIG. 2. FIG.

4 is an exploded perspective view illustrating the assembly of a bell mouse and a casing of an electrical device box;

5 is an enlarged cross-sectional view of the vicinity of the electrical device box shown in FIG.

An object of the present invention is to maintain the relative distance between the centrifugal blower and the bell mouse in a ceiling buried or ceiling dripping air conditioner.

The air conditioner of Claim 1 is equipped with the electrical device box in which the casing, the centrifugal blower, the heat exchanger, the bell mouse, and the electric device were accommodated in the ceiling buried type or the ceiling dripping type air conditioner. The casing is provided with an inlet for sucking air inside and a plurality of blowers for blowing air to the outside. The suction port is provided on the lower surface of the casing. The centrifugal blower is located at the bottom of the casing and is located above the suction port. The heat exchanger is arranged to surround the centrifugal blower. The plurality of ejection openings is arranged on the outer circumferential side of the heat exchanger. The bell mouse is positioned between the inlet and the centrifugal blower. The electrical box is mounted on the ceiling of the casing and extends from the ceiling of the casing to the bell mouse. Bellmouth is supported by an electrical box.

In this air conditioner, since the electrical device box is attached to the ceiling of the casing, the weight of the electrical device box does not act on the bell mouse. As a result, the relative distance between the centrifugal blower and the bell mouse is maintained at a predetermined value, and the blowing performance of the centrifugal blower can be exhibited. In this air conditioner, a bell mouse is supported by an electrical device box mounted to the ceiling of the casing. That is, the bell mouse is supported by the ceiling of the casing through the electrical device box. As a result, the vertical position of the bell mouse becomes more stable.

The air conditioner of Claim 2 is an electrical apparatus box of Claim 1, Comprising: The electrical apparatus box main body is equipped with the electrical apparatus box main body in which the electrical apparatus was accommodated, and the main body mounting member for attaching and detaching an electrical apparatus box main body. The body mounting member is attached to the ceiling of the casing.

In this air conditioner, since the electrical device box main body is detachably attached to the main body mounting member attached to the ceiling of a casing, an electrical device box main body can be easily removed at the time of an inspection of an electrical device box.

The air conditioner of Claim 3 is further equipped with the lid member for opening / closing an electrical device box main body of Claim 2. The lid member is arranged to sandwich the bell mouse between the lower end of the electrical device box body.

In this air conditioner, since the lid member of the electrical device box supports the bell mouse while closing the lower end of the electrical device box, the number of parts can be reduced.

The air conditioner of Claim 4 is an electrical apparatus box of any one of Claims 1-3 arrange | positioned at the position corresponding to a some blowing section.

In this air conditioner, the electrical device box is arrange | positioned in the position corresponding to a blowing section, and it is hard to become the blowing resistance of the air blown off from the centrifugal blower to the outer peripheral side.

In the air conditioner of Claim 5, the casing is substantially rectangular shape in Claim 4, and the some blowing port is arrange | positioned in the position corresponding to each side of the casing. And the electrical device box is arrange | positioned in the position corresponding to the rectangular corner part of a casing.

In this air conditioner, since the electrical device box is arrange | positioned in the position corresponding to the edge part in which the blowout port of a casing is not arrange | positioned, the space inside a casing can be utilized efficiently.

The air conditioner of Claim 6 WHEREIN: The heat exchanger of Claim 5 includes the some convex part formed so that it may be separated from the outer peripheral part of a centrifugal blower, and the some recessed part formed so that it may become close to the outer peripheral part of a centrifugal blower. The convex portions are arranged at least in positions corresponding to the corner portions. And the electrical device box is arrange | positioned in the position fitted in the outer peripheral part and convex part of a centrifugal blower.

In this air conditioner, the heat exchanger includes a plurality of concave portions and convex portions, and the convex portions are disposed at positions corresponding to corner portions of the substantially rectangular casing. Thereby, the area | region between the outer peripheral part of a centrifugal blower and the convex part of a heat exchanger has a space larger than another area | region. And since the electrical device box is arrange | positioned in this area | region, by forming a some recessed part and a some convex part, the effective length of a heat exchanger can increase and the space inside a casing can be utilized efficiently.

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

(1) Configuration of the air conditioner

1 shows an external perspective view of the indoor unit 1 of the air conditioner according to the embodiment of the present invention (the ceiling is omitted). The indoor unit 1 is a ceiling embedded type, and includes a casing 11 embedded in the ceiling and a makeup panel 12 disposed on the lower surface of the casing.

The casing 11 is a member for storing the components of the indoor unit 1 therein. In this embodiment, the casing 11 has a substantially rectangular outline.

The cosmetic panel 12 is provided with the suction port 20 provided in the center of lower surface, and the four jet ports 21 provided in the outer periphery side of the suction port 20. As shown in FIG.

Hereinafter, the inside of the casing 11 is demonstrated with reference to FIG. 2 and FIG. Here, FIG. 2 is a bottom view which shows the inside of the indoor unit 1, and FIG. 3 is sectional drawing A-O-A of FIG. The casing 11 mainly includes a centrifugal blower 17, a heat exchanger 27, a drain plate 25, a bell mouth 18, and an electric device box 16. In addition, at one of the corner portions 11a of the casing 11, a pipe connecting portion 26 is formed from a space for arranging the connecting pipe between the heat exchanger 27 and the outdoor unit (not shown). Here, the electrical device box 56 shown by the dotted line in FIG. 2 and FIG. 3 has shown the arrangement | positioning of the conventional electrical device box.

The centrifugal blower 17 is a device for sucking air in the room from the inlet 20 and blowing air to the side, and is disposed above the inlet 20 and mounted on the ceiling of the casing 11. Here, the rotating shaft of the centrifugal blower 17 is called rotating shaft O-0, and the rotating direction of the centrifugal blower 17 is called rotating direction R. FIG.

The heat exchanger 27 is a device for heat-exchanging air blown out from the centrifugal blower 17, and is arrange | positioned so that the centrifugal blower 17 may be enclosed. In the present embodiment, the heat exchanger 27 is formed by bending a cross fin type heat exchanger panel, and includes two concave portions 27a and 27c and two convex portions 27b and 27d. . Specifically, the recessed part 27a is a part formed so as to approach the outer peripheral part of the centrifugal blower 17, and in this embodiment, the blower outlet 21 of the R side of the piping connection part 26 in the half rotation direction. It is formed correspondingly. In addition, the convex part 27b is a part formed so that it may be separated from the outer peripheral part of the centrifugal blower 17, In this embodiment, it is formed corresponding to the edge part 11a of the semi-rotation direction R side of the piping connection part 26. have. Furthermore, the recessed part 27c is arrange | positioned corresponding to the blowing port 21 of the half rotation direction R side of the convex part 27d, and respond | corresponds to the edge part 11a of the half rotation direction R side of the concave part 27c. The convex part 27d is formed.

The drain plate 25 is a resin plate-like member for receiving condensed water generated when air is cooled in the heat exchanger 27, and is disposed below the heat exchanger 27 and is attached to the lower portion of the casing 11. . As shown in FIG. 4, the drain plate 25 includes a circular hole 25a corresponding to the suction port 20, a square hole 25b corresponding to four jet holes 21, and an outer circumferential edge of the circular hole 25a. The 1st groove part 25c which cut out the external shape further in rectangular shape is formed. The first groove portion 25c is disposed at a position corresponding to one of the corner portions 11a of the casing 11.

The bell mouse 18 is a plate-like member having a bell-shaped opening in the center, as shown in FIGS. 3 and 4, and is disposed between the suction port 20 and the drain plate 25, and has a fixing screw 30. Is attached to the drain plate 25. At the outer periphery of the bell mouth 18, the 2nd groove part 18a which cut out the position corresponding to the 1st groove part 25c of the drain board 25 is formed. And the window part 44 is formed by the 1st groove part 25c and the 2nd groove part 18a overlapping in the up-down direction, and the lower end of the electrical device box 16 is arrange | positioned.

The electrical device box 16 is a device for storing an electrical device used for driving control or the like, which has a shape extending from the ceiling of the casing 11 to the bell mouse 18. In the present embodiment, the electrical device box 16 is disposed between the outer circumferential portion of the centrifugal blower 17 and the convex portion 27b of the heat exchanger 27, as shown in FIG. As shown in Figs. 4 and 5, the electrical device box 16 is equipped with an electrical device box main body 41 in which an electrical device used for driving control and the like is stored, and the electrical device box main body 41 as a detachable material. The main body mounting member 42 and the lid member 43 for opening and closing the electrical device box main body 41 are provided.

The electrical apparatus box main body 41 is a longitudinal box-shaped member which accommodates the electrical apparatus used for operation control etc., and the rough part 41a is formed in the upper side surface.

The main body mounting member 42 has a fixed surface portion 42a mounted to the ceiling of the casing 11 by a fixing screw 31 and a first side portion extending downward from the side surface of the centrifugal blower 17 of the fixed surface portion 42a. (42b), the 2nd side part 42c extended below from the heat exchanger 27 side edge of the fixed surface part 42a, and the support surface part extended from the lower end of the 2nd side part 42c to the centrifugal blower 17 side ( 42d). The slit hole 42e is formed in the 1st side part 42b, and locks the jaw 41a of the electrical device box main body 41. As shown in FIG. A protrusion 42f protruding in the direction of the electrical device box main body 41 is formed in the second side portion 42c, and supports one side surface of the electrical device box main body 41. The support surface part 42d supports the lower end of the electrical device box main body 41.

The lid member 43 is a plate member arranged so as to sandwich the edge portion of the second groove 18a of the bell mouse 18 between the lower ends of the electrical device box main body 41, and by the fixing screw 32, the electrical device box. It is attached to the main body 41.

By the structure of the electrical device box 16 mentioned above, the electrical device box main body 41 is attached to the main body mounting member 42 with the detachable material. In addition, the edge portion of the second groove portion 18a of the bell mouth 18 is supported to be pushed upward by the lid member 43.

(2) the operation of the air conditioner

The operation of the indoor unit 1 will be described with reference to FIG. 3.

When the centrifugal blower 17 is rotated, as shown by arrow W in FIG. 3, indoor air is sucked in from the intake port 20 inside the indoor unit 1. Inhaled air is blown to the outer peripheral side of the centrifugal blower 17, as shown by arrow X of FIG. The air blown to the outer circumferential side of the centrifugal blower 17 is heat exchanged by a heat exchanger 27 disposed on the outer circumferential side of the centrifugal blower 17, as shown by arrow Y, It blows indoors from the blower outlet 21 provided in the outer peripheral part.

(3) Desorption of electrical device box

Desorption of the electrical device box main body 41 at the time of the inspection of the electrical device box 16 is demonstrated with reference to FIG.

The procedure of detaching the electric device box main body 41 from the main body mounting member 42 is demonstrated.

First, the fixing screw 32 is loosened and the lid member 43 is removed. Next, the lower end of the electrical device box main body 41 is drawn to the centrifugal blower 17 side. Then, the electrical device box main body 41 is inclined with the projection 42f of the main body mounting member 42 as a point, and the slit hole of the jaw 41a of the electrical device box main body 41 and the main body mounting member 42 is formed. 42e is separated. Then, the electrical device box main body 41 is pulled out obliquely downward from the window part 44.

On the contrary, when attaching the electric device box main body 41 to the main body mounting member 42, it is attached by reverse | removing the said removal procedure.

(4) Features of the air conditioner

The air conditioner of this embodiment has the following features.

① Maintain the gap between the bell mouse 18 and the centrifugal blower 17

Since the conventional electrical apparatus box 56 is arrange | positioned at the outer peripheral part of the bell mouse 18, as shown in FIG. 2 and FIG. 3, the weight of the electrical apparatus box 56 at the outer peripheral part of the bell mouse 18 is shown. This action may cause the vertical position of the bell mouth 18 to change.

In contrast, since the electrical box 16 of the present embodiment is mounted on the ceiling of the casing 11, the weight of the electrical box 16 is difficult to act on the bell mouse 18. As a result, the wrap band d (relative distance) between the centrifugal blower 17 and the bell mouth 18 is maintained at a predetermined value, and the blowing performance of the centrifugal blower 17 can be exhibited.

② Stability of up and down position of bell mouse 18

In this embodiment, the bell mouse 18 is supported by the electrical box 16 mounted to the ceiling of the casing 11. That is, the bell mouse 18 is supported by the ceiling of the casing 11 via the electrical device box 16. As a result, the vertical position of the bell mouth 18 is positioned and stabilized.

③ Ease of attachment and detachment of electric device box 16

In this embodiment, since the electrical device box main body 41 is detachably attached to the main body mounting member 42 attached to the ceiling of the casing 11, it is easy to check the electrical device box main body ( 41) can be removed. In addition, since the lid member 43 of the electrical device box 16 supports the bell mouse 18 while closing the lower end of the electrical device box 16, the number of parts can be reduced.

④ Arrangement of the electrical device box 16 which is hard to become a blowing resistance

In the present embodiment, since the electrical device box 16 is disposed at a position corresponding to one between the ejection openings 21 provided on each side of the casing 11, the air blown out from the centrifugal blower 17 to the outer circumferential side is It is hard to become ventilation resistance.

⑤ Increase in the effective length of the heat exchanger 27

In the present embodiment, since the heat exchanger 27 includes two concave portions 27a and 27c and two convex portions 27b and 27d, the effective length increases compared with the conventional heat exchanger. And since the recessed part 27a, 27c is arrange | positioned in the position corresponding to the jet port 21, the opening area of the jet port 21 is not made small.

⑥ Improvement of space of casing 11

In this embodiment, the convex part 27b of the heat exchanger 27 is arrange | positioned in the position corresponding to the edge part 11a of the casing 11. Thereby, the area | region between the outer peripheral part and the convex part 27b of the centrifugal blower 17 has a space larger than another area | region. And since the electrical device box 16 is arrange | positioned in this area | region, it becomes possible to utilize the space of the casing 11 efficiently.

(5) another embodiment

As mentioned above, although the Example of this invention was described based on drawing, the specific structure is not limited to this Example, A change is possible in the range which does not deviate from the summary of invention.

For example, in the present embodiment, the present invention is applied to a ceiling-embedded air conditioner, but the present invention can also be applied to a ceiling-loaded air conditioner.

According to the present invention, since the weight of the electrical device box is less likely to act on the bell mouse, the relative distance between the centrifugal blower and the bell mouse is maintained at a predetermined value, so that the blowing performance of the centrifugal blower can be exhibited. .

Claims (6)

In the air conditioner 1 of the ceiling embedding type or the ceiling dripping type, Casing (11), Is installed on the lower surface of the casing 11, the suction port 20 for sucking the air therein, In the casing 11, the centrifugal blower 17 disposed above the suction port 20, A heat exchanger 27 arranged to surround the centrifugal blower 17, A plurality of ejection openings 21 installed in the casing 11 and arranged on an outer circumferential side of the heat exchanger 27 to blow air to the outside; A bell mouse 18 disposed between the suction port 20 and the centrifugal blower 17, An electrical device box (16) containing an electrical device mounted on the ceiling of the casing (11) and extending from the ceiling of the casing (11) to the bell mouse (18). Equipped with The bell mouse 18 is supported by the electrical box 16 Air conditioner (1). The method of claim 1, The electrical device box 16, The electric device box body 41 in which the electric device is stored, Main body mounting member 42 mounted on the ceiling of the casing 11 to detachably mount the electrical device box main body 41. Air conditioner (1) having a. The method of claim 2, The electrical device box 16 is arranged to sandwich the bell mouse 18 with the lower end of the electrical device box body 41, and a lid member 43 for opening and closing the electrical device box body 41. Air conditioner (1) which is further provided. The method of claim 1, The electrical device box (16) is disposed at a position corresponding to the plurality of blower openings (21). The method of claim 4, wherein The casing 11 has a substantially rectangular shape, The plurality of ejection openings 21 are disposed at positions corresponding to the sides of the casing 11, The electrical device box 16 is arranged at a position corresponding to the corner portion 11a of the casing 11. Air conditioner (1). The method of claim 5, The heat exchanger 27 includes a plurality of convex portions 27b and 27d formed to be away from the outer circumferential portion of the centrifugal blower 17 and a plurality of concave portions 27a and 27c formed to approach the outer circumferential portion of the centrifugal blower 17. ), The convex portions 27b and 27d are arranged at least in positions corresponding to the corner portions 11a, The electrical device box 16 is arranged at a position fitted to the outer circumferential portion of the centrifugal blower 17 and the convex portions 27b and 27d. Air conditioner (1).