KR100238512B1 - Air conditioner for ceiling - Google Patents

Abstract

The present invention facilitates maintenance of components, such as electric heaters, accommodated inside the basket, and at the same time reduces the ventilation resistance of inhaled air and secures a sufficient volume in the electrical parts box. And a blower 21 disposed almost at the center of the basket, a heat exchanger 25 disposed along the periphery of the blower, and a bottom of the heat exchanger. The drain plate 23 provided at the site and the inlet of the blower are formed at the lower part of the blower, and at the same time, the bell mouth 27 and the outer circumference of the drain plate divide the air suction side passage and the air ejection side passage of the heat exchanger together with the drain plate. A storage space portion 28b provided with a spout formed in the shape and refracted in a planar recess shape integrally provided on one underside of the bell mouse; It characterized in that it includes a deployed planar recessed electrical component box (28) forming the shape.

Description

Ceiling cassette type air conditioner {AIR CONDITIONER FOR CEILING}

The present invention relates to a ceiling cassette type air conditioner, and more particularly, to an improvement of a bell mouse, an electric parts box, and a basket structure.

10 and 11 show a ceiling cassette type air conditioner conventionally used. The symbol "1" in the middle of the figure is a photoreceptor, and the plane shape is octagonal with four corners cut, and only the bottom side is open.

The blower 2 is arrange | positioned in the substantially center part in the said basket 1, and the bell mouse 3 is connected to the bottom part which is the suction port of this blower.

In the space along the outer periphery of the blower (2) is arranged a heat exchanger (4) in the shape of a rectangular ring which is partially separated in plan view. In other words, the blower 2 is surrounded by the heat exchanger 4.

The heat exchanger 4 is supported by a drain plate 5 fitted in the bottom opening of the basket 1. The drain plate 5 has a plurality of ejection openings 6 open to each inner side in the vertical and horizontal directions of the photoreceptor 1.

The bell mouse attachment plate 7 is fitted into the space portion between the inner peripheral surface of the drain plate 5 and the outer peripheral surface of the bell mouse 3. The bell mouse is fixed to the bell mouse attachment plate 7 by means of installation.

In addition, the bell mouse mounting plate 7 is provided with an electrical component box 8 by appropriate means. The battery part box 8 houses electrical components required for driving control of the blower 2 and electrical components for transmitting detection signals of a room temperature sensor (not shown) to the controller.

Because of this configuration, the air suction side passage and the air blowing side passage of the heat exchanger 4 are distinguished by the bell mouse attachment plate 7 and the drain plate 5.

On the other hand, inside the photoreceptor 1, the electric heater 9 used as an auxiliary heat source at the time of heating is arrange | positioned. The position of the electric heater 9 is set almost immediately above the electric box 8.

The makeup panel 10 is fitted to the bottom opening of the photoreceptor 1 and is exposed from the ceiling plate S into the air conditioning chamber R. The panel ejection opening 10a of the same shape area is opened in this cosmetic panel 10 at the position which opposes the said ejection opening 6.

In addition, the panel suction port 10b of the same shape area is opened at a position opposite to the inner circumferential surface of the drain pan 5. The filter 11 is fitted to the panel suction port 10b and the grill 12 is covered at the same time.

In addition, this type of air conditioner is a type capable of introducing fresh external air into the air-conditioned chamber R as needed.

Specifically, a chamber installation type in which a chamber is installed between the photoreceptor 1 and the ceiling panel S and an external air duct is connected to the chamber, or a direct external in which the external air duct is directly installed in the photoreceptor 1. There is an air inlet duct type. In this direct external air introduction type, the external air introduction air path is constituted by dedicated parts (all not shown).

Conventional ceiling cassette type air conditioners are configured as described above, and the air conditioning function is comfortable without any problem. However, there are the following problems in structure.

That is, in order to rectify the blowing air, the bell mouse attachment plate 7 is required in addition to the bell mouse 3, which increases the cost of parts. In order to secure the suction area of the blower 2, the size of the electrical component box 8 is limited.

When maintenance of the electric heater 9 arranged in the photoreceptor 1 is necessary, the cosmetic panel 10 is removed and three pieces of the electrical parts box 8, the bell mouse 3, and the bell mouse attachment plate 7 are removed. It is troublesome because we have to remove parts.

In the air conditioner capable of introducing external air, the chamber installation type cannot be installed in a condition where the ceiling eye space (between the ceiling plate and the ceiling eye) is small because the height value of the basket is increased due to the installation of the chamber.

Since the chamber is sold separately, the cost of the chamber is increased. When installing the air conditioner, it is necessary to screw the photoreceptor and the chamber, which is troublesome.

In case of direct external air introduction type, special parts must be installed in the air passage for external air introduction. In order to prevent the blower airflow from becoming turbulent by the walls of the air passage for introducing the outside air, special parts for rectification must be installed. It is a bad condition that a dedicated part is necessarily used in the space of the air suction side passage and the air blowing side passage of the heat exchanger.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its object is to facilitate maintenance of a component housed within the basket, for example, an electric heater, and at the same time reduce the ventilation resistance of the intake air to the electrical parts box. It is to provide a ceiling cassette type air conditioner having a sufficient volume.

1 is an exploded perspective view of a ceiling cassette type air conditioner according to a first embodiment of the present invention;

2A is a schematic longitudinal cross-sectional view of a ceiling cassette type air conditioner of the same embodiment;

Figure 2b is a bottom view of the state removing the makeup panel,

3A is a longitudinal cross-sectional view of a ceiling cassette type air conditioner in a state in which the bell mouse and the electrical component box of the same embodiment are removed;

3b is a bottom view thereof;

Fig. 4 is a schematic longitudinal sectional view of the ceiling cassette type air conditioner with the cosmetic panel of the second embodiment taken out of the present invention;

5 is a perspective view of an electrical parts box of the embodiment;

FIG. 6 is an exploded perspective view of a ceiling cassette type air conditioner showing a first embodiment according to a second invention;

7 is a schematic cross-sectional view of a ceiling cassette type air conditioner of the same embodiment;

8 is a schematic bottom view of a ceiling cassette type air conditioner having a cosmetic panel taken out of the embodiment;

Fig. 9A is a schematic bottom view of a ceiling cassette type air conditioner with the cosmetic panel of the second embodiment taken out of the present invention;

Fig. 9B is a schematic bottom view of a ceiling cassette type air conditioner in which the makeup panel of the third embodiment of the present invention is removed;

Fig. 9C is a schematic bottom view of a ceiling cassette type air conditioner with the cosmetic panel of the fourth embodiment taken out of the present invention;

9D is a schematic bottom view of a ceiling cassette type air conditioner with the cosmetic panel of the fifth embodiment taken out of the present invention;

10A is a schematic bottom view of a ceiling cassette type air conditioner with a conventional cosmetic panel removed;

10B is a schematic longitudinal cross-sectional view of the Dongcheon cassette type air conditioner, and

11 is a bottom view of a ceiling cassette type air conditioner in a state where a bell mouse mounting plate, a bell mouse, and an electric parts box are removed.

* Explanation of symbols for main parts of the drawings

20,20A: Gwangju Riche (basket) 21: Blower

25,25A: Heat exchanger 23,23A: Drain plate

27: Bellemouth 24: Ejector

27B: Storage compartment 28, 28A: Electrical parts box

a: Sloped surface 22A: Foam insulation

35: outside air inlet 38, 39: outside air inlet

37C: Air Blowing Path (Secondary Wall)

In order to satisfy the above object, the ceiling cassette type air conditioner of the first aspect of the present invention is a photocatalyst having an open bottom surface, a blower disposed almost at the center of the photocatalyst, and a heat exchanger disposed along the periphery of the blower. A drain plate provided at the bottom of the heat exchanger, a blower at the bottom of the blower is formed, and at the same time, a bell mouse for separating the air intake side passage and the air ejection side passage of the heat exchanger together with the drain plate; In the ceiling cassette type air conditioner having a spout formed in the outer peripheral portion of the drain plate,

An accommodation space part integrally installed at one bottom side of the bell mouse and bent in a planar concave shape, and

It is characterized in that it comprises an electrical component box forming a planar recess arranged in the storage space.

Claim 2 is characterized in that the blower is set at a position in which the installation center position is deviated by a predetermined length on the side opposite to the side where the electrical component box with respect to the center of the basket is arranged.

Claim 3 is the electrical component box of claim 1, characterized in that the inclined surface inclined so as to gradually expand toward the inlet side of the bell mouse downwards.

By providing a means for solving the above problems, the invention of Claims 1 to 3 facilitates maintenance of components housed within the basket, for example, electric heaters, and at the same time reduces the ventilation resistance of the intake air. Together, secure sufficient volume in the electrical box.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show a ceiling cassette type air conditioner corresponding to the first invention. 1 to 3 are the first embodiment, and FIGS. 4 and 5 are the second embodiment.

First, what is shown in FIGS. 1-3 has described 1st Embodiment. "20" in the figure is a basket. The basket 20 is formed in an octagonal shape by cutting the square corners of the square in a plan view so that the edge is integrally installed along the periphery thereof. Also, the base of the basket is open.

The fan motor 21a constituting the blower 21 is fixed to the top wall 20a of the basket 20 by appropriate means. The axial direction of this fan motor 21a is in the vertical direction, and the fan 21b is fitted to the rotating shaft which protrudes to the lower part.

In particular, as shown in FIGS. 2B and 3B, the central position Ob of the blower 21 is set at a position away from the central position Oa of the basket 20.

In addition, a portion of the lower side remains with respect to the inner circumferential surface of the side wall of the basket 20 so that the heat insulator 22 shown in FIG. 1 is disposed on the entire surface or over the main end of the inner circumferential surface of the upper wall. The connection is installed tightly.

The drain plate 23 formed at the same outer dimension as the outer dimension of the heat insulator 22 is superimposed on the lower side of the insulator 22 so that the lower part of the side wall of the basket 20 remains connected to the inner circumferential surface. It is installed as it is.

The ejection openings 24 are respectively drilled in the longitudinally and horizontally long sides of the drain plates 23. In the substantially center position of the drain plate 23, a bell mouth attachment hole 26 of which a portion is circular and the remaining portion is straight is drilled.

A cross section is formed in a concave shape between the jet port 24 of the drain plate 23 and the bell mouth attachment hole 26, whereby the heat exchanger 25 is supported. The upper end of the heat exchanger 25 is in contact with the inner circumferential surface of the top wall of the photocursor 20, and the heat exchanger 25 is between the photocursor 20 and the drain plate 23. In addition, the heat exchanger 25 is arrange | positioned in space along the outer periphery in the photocursor 20, and becomes substantially rectangular shape in plan view, and each part of it is cut off.

A bell mouse 27 is fitted into the bell mouth attachment hole 26 of the drain plate 23. The upper end of the bell mouse 27 has a circular part connected to the suction part of the blower 21, in which the lower side is inclined outward at the same time and the edge around the tip is integrally connected with the bell mouse main body part. An accommodating space portion 27B for accommodating the electrical component box 28 to be described later is configured.

That is, the storage space 27B is provided on one lower surface side of the bell mouse 27 and is formed in a substantially concave shape in which both sides are inclined at an angle in plan view. The inner portion of the concave portion protrudes in the fan central axis direction to surround the outer circumferential end of the blower fan 21b, and at the same time, a vertical wall surface is formed in accordance with the height of the bell mouse body portion 27a.

The electrical box 28 has a substantially concave shape that is completely identical to the storage space 27B in plan view. The thickness (height value) is the same as that of the vertical wall of the storage space 27B and the position is adjusted here.

The electrical component box 28 is fixed to the storage space 27B by suitable means. The electronic parts and the like for transmitting the detection signal of the room temperature sensor (not shown) to the control unit are housed therein.

In particular, as shown in FIG. 2B, the position of the electrical parts box 28 is set so that the position of the electrical parts box 28 is shifted in a direction opposite to the center position 0b of the blower 21 with respect to the center position 0a of the photoreceptor 20. .

Because of this configuration, the bottom side opening of the bell mouse 27 is formed as a suction port. In addition, the bell mouth 27 and the drain plate 23 divide the air suction side passage, which is a position before the heat exchange, of the heat exchanger 25, and the air blowing side passage, which is the position after the heat exchange.

On the other hand, inside the photoreceptor 20, an electric heater 29 used as an auxiliary heat source at the time of heating is disposed. The position of this electric heater 29 is set in substantially the same position as the said electrical component box 28. As shown in FIG.

As shown in FIG. 2 only, the makeup panel 30 is fitted into the bottom opening of the photocursor 20 and is exposed from the ceiling plate S into the air-conditioning room. The panel 30 is provided with a panel ejection port 30a having the same shape at a position facing the ejection port 24.

And the panel suction opening 30b of the same shape area is opened in the position which opposes the inner peripheral surface of the drain dish 23. As shown in FIG. A filter 31 is fitted to this panel suction port 30b, and the filter is covered with a grill 32.

When the blower 21 is driven together with the refrigeration cycle operation in the ceiling cassette type air conditioner having such a configuration, the air in the air-conditioned chamber R is connected to the grill 32 and the filter at the panel inlet 30b of the decorative panel 30. 31 is sucked into the basket 20 through.

In addition, it is rectified by the bell mouse 27 and passes through the heat exchanger 25 by the blower 21, and heat exchanges with the refrigerant guided therein. This heat exchange air is blown into the air-conditioning chamber through the blower outlet 24 opened in the outer periphery of the drain plate 23, and the panel blower outlet 30a of the makeup panel 30.

The bell mouse 27 is provided with a bell mouse mounting hole 26 provided in the drain plate 23 and a bell mouse body 27a which is installed in connection with the suction part of the blower 21. Because of the inclined shape, the rectifying effect of the intake air is good.

Since the blower 21 center position 0b is out of the center position 0a of the photoreceptor 20, the electrical parts box 28 is installed at a position opposite to the blower center position. The volume of the parts box 28 can be secured more.

In addition, if necessary, maintenance of the electric heater 29 accommodated in the basket 20 can be performed. In this case, the cosmetic panel 30 is removed, and the drain plate 23, the bell mouse 27, and the electric parts are removed. Expose the box 28.

Then, the electrical component box 28 and the bell mouse 27 are removed. As shown in FIG. 3, the drain plate 23 may not be removed. Since the electric heater 29 is exposed to the inner circumferential side opening of the drain plate 23, the operator can remove the electric heater 29 by extending a hand between the blower 21 and the dresser 23.

That is, since the electrical component box 28 is provided in the bell mouse 27, the electric heater 29 is exposed and maintenance is easy only by removing the bell mouse 27 substantially, and workability is good.

As shown in FIG. 4 and FIG. 5 as 2nd Embodiment, in this case, only the inner side of the concave shape of the electronic component box 28A is the inclined surface a. This inclined surface a gradually inclines from the top to the bottom and from the inside to the outside.

On the other hand, the bell mouse body 27a of the bell mouse 27 is gradually enlarged from the top to the bottom direction from the inside to the outside as described above. Therefore, in the state of FIG. 4 in which the electrical component box 28A is installed, the wind is efficiently and smoothly guided to the inlet of the bell mouse by the operation of the blower 21, and the ventilation resistance of the intake air is further reduced, so that the rectifying effect is achieved. Is improved.

6 to 9 show a ceiling cassette type air conditioner of the second invention.

6 to 8 show a first embodiment. Here, the basic configuration of the ceiling cassette type air conditioner is the same as described above.

That is, as shown in FIG. 6, the ceiling cassette type air conditioner supports the heat exchanger fitted to the bottom opening of the photoreceptor 20, the blower 21 and the heat exchanger 25, and the bottom opening of the photoreceptor. 23 A of drain plates, the makeup panel 30 provided in the lower surface of a photocursor, and 22 A of foam insulation materials adhere | attached to a part of inner surface of a photocursor (bell mouse is abbreviate | omitted).

Here, each of the above-mentioned basket body 20A, the foamed heat insulating material 22A, the drain pan 23A and the heat exchanger 25A has the characteristics described below, and the same reference numerals are attached to those of the invention. Since the other components are the same, the same reference numerals are used and the new description is omitted.

That is, a hole 35 for introducing external air is drilled in the side wall 20b of the basket 20A. The side wall 20b is attached with an outside air duct 36 which is connected to the outside air introduction hole 35.

An end portion (not shown) of the external air duct 36 is connected to an external air intake opening formed in the wall of the house and allows external air to enter. A shutter mechanism is provided at the outside air inlet of the house wall, and can be opened and closed by a remote operation in the air conditioning room.

A guide hole 36 connected to the air insulation hole 35 of the side wall of the photocursor 20 is formed in the side wall 22A in the foam insulation 22A. Moreover, the auxiliary wall 37 protrudes integrally and is provided in the inner surface side of 22 A of side walls in which this guide hole 36 is provided.

The auxiliary wall 37 opens after the foamed heat insulating material 22A, and the upper surface thereof is blocked by the foamed heat insulating material upper surface part 22b. The space formed by the auxiliary wall 37 in the guide hole 36 is called an air passage 38 for introducing external air.

The drain pan 23A is provided with an air passage 39 for external air having the same shape at the same position as the air passage 38 for introducing external air formed in the foam insulation 22A. This air path 39 is drilled both above and below the drain plate 23A.

Therefore, the outside air introduction passage 38 of the foamed heat insulating material 22A and the outside air introduction passage 39 of the drain plate 23A are interposed with each other.

In particular, as shown in Figs. 6 and 8, the heat exchanger 25A is composed of a pair of heat exchangers A in an L-shape in plan view, and are arranged symmetrically apart from each other.

One end of the heat exchanger A on the side of the air passages 38 and 39 for introducing external air is connected by a shielding plate 40. That is, the outside air from the air passages 38 and 39 for introducing the outside air is blocked by the shielding plate 40 into the air blowing side passage so that the air does not escape to the air intake side passage.

In addition, the ends of the heat exchanger A opposite to the ends connected by the shielding plate 40 are in close contact with a pair of protrusions b respectively provided on a part of the inner circumferential wall of the foamed heat insulating material 22A. Also, intrusion into the air blowing side passage of the outside air, which has returned from the outer circumferential surface of the heat exchanger A, is prevented.

In the ceiling cassette type air conditioner configured as described above, when the blower 21 is driven together with the refrigeration cycle operation, the air to be processed (R) is the grill 32 and the filter at the panel inlet 30b of the decorative panel 30. Inhaled in the basket 20A through 31.

And it is rectified by the bell mouse which is not shown in figure, and is heat-exchanged with the refrigerant | coolant guide | induced through the heat exchanger 25A by the blower 21 here. This heat exchange air is blown into the air-conditioning chamber R from the blower outlet 24 opened in the outer peripheral part of 23 A of drain pans, and the panel blower outlet 30a of the makeup panel 30. FIG.

If the shutter of the outside air duct 36 is opened as needed, the outside air is led to the outside air introduction hole 35 through the outside air duct. Then, it flows along the air passages 38 and 39 for introducing the external air of the foamed heat insulating material 22A and the drain pan 23A. Mixing with the intake air of the air-conditioning chamber which came out of the air flow path 29 for introducing the external air of the drain plate 23A, and is guided through the inlet port 30b of the cosmetic panel 30.

The mixed suction side air is guided through the blower 21 to the heat exchanger 25A, heat exchanged, and blown out from the blower outlet 24 and the panel blower outlet 30a into the air-conditioning chamber R. Therefore, the heat exchange air which introduces fresh outside air air-conditions the air chamber to be processed.

In addition, the shielding plate 40 securely seals the air intake side passage of the heat exchanger 25A and the air ejecting side passage with respect to the external air guided to the air passages 38 and 39 for introducing the outside air, thereby improving heat exchange efficiency. This will be.

The external air introduction hole 35 and the external air introduction air passages 38 and 39 can obtain only a partial improvement of the existing basket 23A, the foam insulation 22A, and the drain plate 23A. A chamber or the like is unnecessary. This eliminates the need for mounting effort, greatly improves workability, and contributes to cost reduction of components.

In addition, you may employ | adopt the embodiment shown to FIG. 9A-9C as a sealing structure instead of the said shielding plate 40.

First, in the closed structure of FIG. 9A, the auxiliary wall 37A constituting the air passages 38 and 39 for introducing the outside air protrudes the inner wall thereof inward to increase the wall thickness. In this phenomenon, an engaging portion 41 is fitted to the end of the pair of heat exchange gas A and to each other.

Therefore, if the wall surface of the auxiliary wall 37A like the shield plate 40 forms a seal between the air intake side passage of the heat exchanger 25A and the air ejecting side passage, and adopts this configuration, the shield plate becomes unnecessary.

In the same figure, the wall surface of the auxiliary wall 37B is thickened inward, and at the same time, there is an engagement portion 41 which is fitted with the ends of the pair of heat exchange gases A and the air intake side passage of the heat exchanger 25A. The sealing with the air blowing side passages does not change. However, here, both side parts c of the auxiliary wall 37B are engaged in the direction orthogonal to the longitudinal direction of the heat exchange gas A. As shown in FIG.

Therefore, even though the blower airflow which passed through the heat exchanger 25A may seem to collide with the auxiliary wall 37B, since the same sharp rectangular recessed part d of FIG. Blowing noise is reduced without.

In the same figure c, only the both sides of the wall surface of the auxiliary wall 37C are thickened. Then, the end portions of one heat exchanger A are fitted to each other on the inner side, and the air suction side passage of the heat exchanger 25A and the air blowing side passage are sealed. Here, both side parts c of the auxiliary wall 37C are provided in the direction orthogonal to the longitudinal direction of the heat exchanger.

Therefore, although the blower airflow which passed through the heat exchanger may seem to collide with the auxiliary wall 37C, since the sharp rectangular recessed part d as shown in FIG. A is not formed, blowing noise is reduced without generating a gliding flow. .

In the same FIG. D, the shielding plate 40 described above is connected to each other at the ends of the pair of heat exchangers A, and the change in the sealing between the air intake passage and the air ejecting passage of the heat exchanger 25A is changed. none.

Here, the inner wall surface of the auxiliary wall 37D is parallel to the shielding plate 40 at a narrow interval, and both sides e form an air blowing passage formed in a mountain shape larger than 90 degrees.

Therefore, the blower air is smoothly guided along the air blowing passage, which is the wall surface of the auxiliary wall 37D, and the air blowing noise can be reduced without ending.

As described above, in the invention of claim 1, an accommodating space portion is formed integrally bent in a planar concave shape on one underside of the bell mouse, and an electrical parts box forming a planar concave shape is disposed at the same time. Since the bell mouse is detachably installed in the hole for attaching the bell mouse formed at the center of the drain pan, the bell mouse is practically used even when the component parts accommodated in the photoreceptor, for example, the electric heater, are managed. Since the electrical parts can be removed only by removing the from the drain plate, the management can be easily performed.

In the invention of claim 2, since the blower is set at a position deviating by a predetermined length from the side opposite to the side where the electrical component box is arranged with respect to the center of the photovoltaic body, the electrical component box can secure a sufficient volume. At the same time, it is possible to secure a sufficient exposure space inside the basket of the upper part of the electrical component box in the case of carrying out the above management in accordance with securing the sufficient volume.

In the invention of claim 3, since the electrical component box is inclined to be inclined to gradually open toward the outside of the inlet side of the bell mouse, the ventilation resistance of the intake air can be reduced and the blowing efficiency can be improved.

Claims (3)

A basket having a bottom side open, a blower disposed at the center of the basket, a heat exchanger disposed along the periphery of the blower, a drain plate provided at a bottom of the heat exchanger, and a blower at a bottom of the blower. A ceiling cassette type air conditioner having a suction port formed at the same time and having a bell mouth for separating the air suction side passage and the air discharge side passage of the heat exchanger together with the drain plate, and a blower outlet formed at the outer circumference of the drain plate. And an accommodating space part integrally installed at one bottom side of the bell mouse and being bent in a planar concave shape, and an electric parts box having a planar concave shape disposed in the accommodating space part. Characterized in that the installation is detachably free from the bell mouse mounting hole formed in the center position of the Ceiling cassette type air conditioner. 2. The ceiling cassette type air conditioner according to claim 1, wherein the blower is set at a position in which the installation center position is deviated by a predetermined length from the side opposite to the side where the electrical component box is arranged with respect to the center of the basket. group. 2. The ceiling cassette type air conditioner according to claim 1, wherein the electrical parts box has an inclined surface inclined so that the inlet side of the bell mouse is gradually enlarged toward the outside.

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