KR20180119778A - Blower and air conditioner therewith - Google Patents

Abstract

According to the present invention, a blower and an air conditioner having the same are provided. According to the present invention, the blower comprises: an impeller rotating about a shaft extending in a lateral direction, wherein a space portion into which air sucked through a side portion flows is formed therein; and a scroll housing in which an accommodating space accommodating the impeller is formed, and a first suction hole and a second suction hole forming a path through which outdoor air is sucked into the space portion are formed in a side portion. The scroll housing comprises: a first side plate arranged in a side portion at one side of the scroll housing, and having the first suction hole; a second side plate arranged in a side portion at the other side of the scroll housing, and having the second suction hole; a scroll arranged between the first side plate and the second side plate, wherein the accommodating space is formed therein, and an inner circumferential surface is formed to be a curved surface surrounding an outer circumferential surface of the impeller; a connection plate arranged between the first side plate and the second side plate, surrounding an external side of a circumferential direction of the scroll, and connecting the first side plate and the second side plate; a discharge unit formed to penetrate into the front of the scroll and the connection plate, and forming a path through which air sucked into the accommodating space is discharged; and a cut-off unit formed on a boundary surface between the connection plate and the discharge unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a blower,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air blower and an air conditioner having the same, and more particularly, to an air blower that sucks air to blow air in a centrifugal direction and an air conditioner having the same.

The centrifugal blower is a blower using centrifugal force and has an impeller located in the scroll housing. In this centrifugal blower, the inlet flow of the impeller is in the direction of the rotational axis, and the impeller outlet flow is in the direction perpendicular to the rotational axis.

When the impeller rotates, the impeller can flow air, and the air flowed by the impeller is guided along the inner wall of the scroll housing and then discharged through the discharge portion.

The centrifugal blower may be classified into a multi-bladed blower, a turbo blower, and a plate blower according to the structure of the impeller.

Such a centrifugal blower may be used to effect air flow by being applied to various devices for flowing air such as an air conditioner.

For example, the centrifugal blower may be provided in such a form that an inlet is formed on both sides of an impeller, i.e., a scroll housing having a fan, and a discharge portion is formed in front of the scroll housing. And a double-suction centrifugal blower sucking and blowing.

The two-suction centrifugal blower is advantageous in that air can be blown in a large amount compared to a one-way centrifugal blower in which air is sucked in one direction by allowing air to be sucked in both right and left directions. However, noise and vibration are relatively increased .

This problem is mainly due to the uneven suction resistance applied to the fan. For example, when a large amount of air resistance is generated on the right side of the fan located on the suction side formed on the right side of the scroll housing compared to the left side of the fan located on the left side of the scroll housing, the right side of the fan slowly rotates, The vibration of the both suction centrifugal blower is generated and the noise is generated, and the blowing performance of the both suction centrifugal blower is deteriorated.

Also, when the double-suction centrifugal blower is operated, air resistance due to the secondary flow of the air generated at the corner portion inside the scroll housing may be generated inside the scroll housing, and the air resistance thus generated may cause vibration and noise But also causes a deterioration in the blowing performance of the double suction centrifugal blower.

Also, if the rotational force of the fan is increased to increase the blowing performance of the double suction centrifugal blower, the vibration and the noise can be increased as well. Therefore, if the discharge amount of the air through the discharge portion can be increased without increasing the rotational force of the fan, The blowing performance of the humidified inlet centrifugal blower can be improved.

An object of the present invention is to provide an air blowing device and an air conditioner having the same, which can provide improved air blowing performance while suppressing vibration and noise generation.

According to an aspect of the present invention, there is provided an air blowing apparatus comprising: an impeller which rotates about an axis extending in a lateral direction and in which a space into which air sucked through a side is introduced is formed inside; And a scroll housing in which a housing space for accommodating the impeller is formed and in which a first suction hole and a second suction hole are formed on a side portion to form a passage through which external air is sucked toward the space portion, The housing includes a first side plate disposed at one side of the scroll housing, the first side plate defining the first suction hole; A second side plate disposed on the other side of the scroll housing, the second side plate defining the second suction hole; A scroll formed between the first side plate and the second side plate and having a receiving space formed therein and having an inner circumferential surface formed as a curved surface surrounding the outer circumferential surface of the impeller; A connecting plate disposed between the first side plate and the second side plate and surrounding the circumferential outer side of the scroll and connecting the first side plate and the second side plate; A discharge portion formed in the front of the scroll and the connection plate to form a passage through which the air sucked into the accommodation space is discharged; And a cut-off portion formed at an interface between the connection plate and the discharge portion, wherein the cut-off portion is formed such that a center portion in the width direction is recessed in a downward direction with respect to both widthwise sides, And the width in the widthwise direction of the cut-off portion is equal to the width in the front-rear direction.

Further, the present invention further includes a hub installed inside the impeller to divide the space part in the lateral direction, and the cut-off part has a concave shape in a downward direction as the position in the width direction of the cut- .

It is preferable that the cut-off portion is formed in a "V" shape in which the central portion in the width direction forms the lowest surface.

It is preferable that the cut-off portion includes a spline shape in which the center in the width direction forms the lowest surface.

The cut-off portion may include a curved surface formed by connecting curved surfaces formed with a curvature corresponding to a rate of change of the amount of air passing through the angular position of the cut-off portion along the width direction of the cut-off portion continuously along the width direction of the cut- As shown in Fig.

Further, it is preferable that the front surface of the connecting plate on which the cut-off portion is formed is formed in a recessed shape with the center portion in the width direction more rearward than the widthwise both sides.

Further, it is preferable that the front surface of the connecting plate on which the cut-off portion is formed is formed in such a shape that the portions along the width direction of the cut-off portion are equally spaced from the inner circumferential surface of the scroll in the longitudinal direction.

According to an aspect of the present invention, there is provided an air blowing apparatus comprising: an impeller which rotates about an axis extending in a lateral direction and in which a space into which air sucked through a side is introduced is formed inside; And a scroll housing in which a housing space for accommodating the impeller is formed and in which a first suction hole and a second suction hole are formed on a side portion to form a passage through which external air is sucked toward the space portion, The housing includes a first side plate disposed at one side of the scroll housing, the first side plate defining the first suction hole; A second side plate disposed on the other side of the scroll housing, the second side plate defining the second suction hole; A scroll provided between the first side plate and the second side plate, the accommodation space being formed in the inside and the inner circumferential surface being formed as a curved surface surrounding the outer circumferential surface of the impeller; And a through passage formed to pass through the scroll housing and open between one lateral side of the scroll housing and the other lateral side of the scroll housing.

Preferably, the through-passage portion is formed through a part of the first side plate and the second side plate.

Further, the present invention may further include a connecting plate disposed between the first side plate and the second side plate, the connecting plate surrounding the circumferential outer side of the scroll and connecting the first side plate and the second side plate, And is preferably disposed between the scroll and the connecting plate.

Further, it is preferable that the through-passage portion is disposed at a position of at least one of a rear upper side, a rear lower side and a front lower side of the scroll housing.

According to another aspect of the present invention, there is provided an air blowing apparatus comprising: an impeller which rotates about an axis extending in a lateral direction and in which a space into which air sucked through a side is introduced is formed inside; And a scroll housing in which a housing space for accommodating the impeller is formed and in which a first suction hole and a second suction hole are formed on a side portion to form a passage through which external air is sucked toward the space portion, The housing includes a first side plate disposed at one side of the scroll housing, the first side plate defining the first suction hole; A second side plate disposed on the other side of the scroll housing, the second side plate defining the second suction hole; And a scroll disposed between the first side plate and the second side plate and having a receiving space formed therein and having an inner circumferential surface formed by a curved surface surrounding the outer circumferential surface of the impeller, At least one of a connecting portion between the inner circumferential surface of the scroll and the inner circumferential surface of the scroll and a connecting portion between the inner circumferential surface of the scroll and the second side plate has a curved surface connecting portion that forms a curved surface connecting between the inner circumferential surface of the scroll and the first shank or between the inner circumferential surface of the scroll and the second shank .

It is also preferable that the curved connecting portion forms a curved surface having an R value of 3 to 5 mm.

According to another aspect of the present invention, there is provided an air conditioner comprising: a blower; A first suction body disposed at one side of the air blowing device and having a first air suction part; And a second suction body which is disposed on the other side of the air blowing device and in which a second air suction part is formed, wherein the blowing device is arranged between the first suction body and the second suction body, And the air sucked through the air suction unit and the second air suction unit is sucked and discharged forward.

According to the air blowing apparatus of the present invention and the air conditioner having the blowout apparatus, since the cut-off portion is formed in such a shape that the width in the vertical direction of the passage formed by the discharge portion increases as the flow rate discharged from the impeller is increased, It is possible to increase the discharge flow rate through the discharge portion without increasing the rotational force of the fan and thus to provide improved blowing performance while suppressing vibration and noise generation.

In addition, the present invention provides a lateral passage through which the scroll housing can laterally pass on the scroll housing, thereby allowing smooth intake of air through both sides of the impeller, thereby suppressing the increase in vibration and noise And provide improved ventilation performance.

Further, according to the present invention, the flow path resistance in the scroll is reduced by using a curved surface connecting portion that acts to reduce the resistance due to the secondary flow of air at the portion connecting the inner circumferential surface of the scroll and the side plate, Can be provided.

1 is a front view showing a configuration of an indoor unit of an air conditioner according to a first embodiment of the present invention.
2 is an exploded perspective view showing the decomposition state of the air conditioning module shown in FIG.
3 is a sectional view taken along the line " III-III "in Fig.
4 is a perspective view illustrating the scroll housing according to the first embodiment of the present invention.
5 is a front view of the scroll housing shown in Fig.
6 is a sectional view taken along the line "VI-VI" in Fig.
7 is a sectional view taken along the line "VII-VII" in Fig.
8 is a perspective view illustrating a scroll housing according to a second embodiment of the present invention.
9 is a front view of the scroll housing shown in Fig.
FIG. 10 is a graph showing a change in the blowing amount at each position of the impeller along the lateral direction.
11 is a perspective view showing a scroll housing of a fan apparatus according to a third embodiment of the present invention.
12 is a view schematically showing the air flow on both lateral sides of the scroll housing in which the through passage portion is not formed.
Fig. 13 is a view schematically showing the air flow on both lateral sides of the scroll housing shown in Fig. 11. Fig.
14 is a side sectional view showing the internal shape of the scroll housing shown in Fig.
FIG. 15 is a graph showing a comparison between the air volume of the impeller according to the third embodiment of the present invention and the number of rotations of the impeller of the conventional air fan.
16 is a graph showing a comparison between the noise levels of the fan units according to the third embodiment of the present invention and the noise levels of the impellers of the conventional fan unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an air blower and an air conditioner having the same according to the present invention will be described with reference to the accompanying drawings. For convenience of explanation, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

[Overall structure of indoor unit]

FIG. 1 is an exploded perspective view showing the disassembled state of the air conditioner module shown in FIG. 1, and FIG. 3 is an exploded perspective view of the air conditioner shown in FIG. 1 Sectional view taken along the line "III-III ".

Referring to FIG. 1, an indoor unit 1 of an air conditioner according to an embodiment of the present invention may include an air conditioning module 10 for sucking outside air, exchanging heat with a refrigerant, and discharging the air to the outside.

The air conditioner may further include a base 20 for supporting the air conditioning module 10 on the floor of the room. can do.

The air conditioning module 10 may be installed on the base 20, and in this case, the air conditioning module 10 may air-inhale air at a predetermined height in the room.

The air conditioning module 10 may be detachably coupled to the base 20. For example, the air conditioning module 10 can be fastened to the base 20 by a fastening member such as a screw in a state where the air conditioning module 10 is mounted on the base 20. As another example, the air conditioning module 10 may be mounted on the base 20 in the form of a hook using a hook or the like while being put on the base 20.

As another example, the air conditioning module 10 may be mounted on the base 20 in the form of a sliding engagement while being mounted on the base 20. [ In this case, the sliding rail may extend in the front-rear direction or the left-right direction in either the lower part of the air conditioning module 10 or the upper part of the base 20, and the other one may be slidably guided along the sliding rail A sliding guide may be formed.

The air conditioning module 10 can discharge air through a portion other than the bottom surface. In this case, the air conditioner can concentratively discharge the air ventilated in the front direction of the air conditioning module 10. [

The air conditioning module 10 can suck air through a portion other than the front surface, for example, at least one of a left side surface and a right side surface of the air conditioning module 10. [ The air conditioning module 10 may include a suction body having an air inlet. Preferably, the air conditioning module 10 may include a plurality of suction bodies 110 and 120 so that indoor air can be sucked and air-conditioned more quickly.

2 and 3, a passage for sucking the air outside the air conditioning module 10, that is, indoor air, into the air conditioning module 10 is connected to each of the suction bodies 110 and 120 through a suction body (not shown) 110 and 120 are formed on the outer circumferential surface of the outer circumferential surface.

According to the present embodiment, the air conditioning module 10 is provided in such a manner that air is sucked through both side surfaces and air is discharged through the front surface. When the air conditioning module 10 is configured to suck air through the front surface and to discharge air through the front surface, the air discharged through the front surface of the air conditioning module 10 can not be spread out to the room, A phenomenon of being again sucked may occur.

In contrast, in the air conditioning module 10 of this embodiment, air is sucked through both side surfaces and air is discharged through the front surface so that the air sucking and discharging are performed in different directions, while the air sucking portion and the air discharging portion So that the air can be sucked and discharged smoothly.

Specifically, the air conditioning module 10 provided in the indoor unit 1 of the present embodiment includes the first suction body 110, the second suction body 120, and the discharge devices 400 and 450.

The first suction body 110 may be provided in the form of a rectangular panel. The first suction body 110 is disposed on one lateral side of the air conditioning module 10 and constitutes a left side surface of the air conditioning module 10, for example, the air conditioning module 10. The first suction body 110 The first air intake part 111 is formed. The first air intake part 111 is formed to penetrate the first suction body 110 in a lateral direction and the first suction body 110 is formed with a plurality of first air intake parts 111, That is, the room air is sucked into the inside of the air conditioning module 10. [

The second suction body 120 may be provided in a rectangular panel shape similar to the first suction body 110. The second suction body 120 is disposed on the other side of the air conditioning module in the lateral direction to form the other side surface of the air conditioning module 10, for example, the right side surface of the air conditioning module 10. In the second suction body 120, An air suction portion 122 is formed. The second air intake part 122 is formed to penetrate the second suction body 120 in the lateral direction and the second suction body 120 is formed with a plurality of second air intake parts 122, That is, the room air is sucked into the inside of the air conditioning module 10. [

The first suction body 110 and the second suction body 120 are spaced apart from each other on both sides of the air conditioning module 10 with a blower 200 to be described later interposed therebetween, And the second air intake part 121 are arranged on the left side and the right side of the air conditioning module 10 so as to face each other.

The indoor air is supplied to both sides of the air conditioning module 10 through the first air intake part 111 of the first suction body 110 and the second air suction part 121 of the second suction body 120, And can flow into the air conditioning module 10 through the air conditioning module 10 in the lateral direction from the side.

In addition, the air conditioning module 10 provided in the indoor unit 1 of the present embodiment may further include a blowing device 200. The air blowing device 200 is disposed between the first suction body 110 and the second suction body 120 and receives air into the air conditioning module 10 through the side of the air conditioning module 10, 10 to form an air flow for discharging air to the outside of the air conditioning module 10.

According to the present embodiment, the air outside the air conditioning module 10 flows into the air conditioning module 10 by the airflow formed by the air blowing device 200, and the first air intake part 110 of the first suction body 110, Through the second air intake part 121 of the second intake body 120 and the air conditioning module 10 from both sides of the air conditioning module 10 to the inside of the air conditioning module 10 ≪ / RTI >

The air introduced into the air conditioning module 10 has a first suction hole 211a formed to penetrate one side of the side of the air blowing device 200 and the other side of the side of the air blowing device 200, that is, the left side and the right side of the air blowing device 200, And sucked into the blower 200 through the second suction hole 212a.

At this time, the air introduced into the air conditioning module 10 through the first air intake part 111 of the first suction body 110 is blown through the first suction hole 211a formed on the left side of the air blowing device 200 The air introduced into the air conditioning module 10 through the second air intake part 121 of the second suction body 120 is sucked into the inside of the apparatus 200, And is sucked into the air blowing device 200 through the two suction holes 212a.

That is, the air flowing into the left side of the air blowing device 200 is sucked into the air blowing device 200 through the independent flow path connecting the first air suction part 111 and the first suction hole 211a, The air flowing into the right side of the second air intake part 200 is sucked into the air blowing device 200 through an independent flow path connecting between the second air suction part 121 and the second suction hole 212a. The air sucked into the interior of the air blowing apparatus 200 can be discharged forward through the discharge unit 215 formed on the front surface of the air blowing apparatus 200.

The air conditioning module 10 provided in the indoor unit 1 of the present embodiment may include a plurality of heat exchanging units 310 and 315 for exchanging the air introduced into the air conditioning module 10 with the refrigerant. At this time, the plurality of heat exchanging units 310 and 315 may be disposed laterally spaced apart from each other through the air blowing device 200.

In this embodiment, the air conditioning module 10 is exemplified as including the first heat exchanging portion 310 and the second heat exchanging portion 315. At this time, the first heat exchanging part 310 is installed between the first suction body 110 and the air blowing device 200. The second heat exchange unit 315 is installed between the second suction body 120 and the blower 200. The first heat exchange unit 310 and the second heat exchange unit 315 are disposed between the blower 200 I.e., in the left-right direction.

The first heat exchanging part 310 may be disposed on the flow path connecting the first air suction part 111 and the first suction hole 211a and may be disposed on the flow path connecting the first air suction part The air flowing from the first heat exchanger 111 toward the first suction hole 211a may be sucked into the blower 200 through the first suction hole 211a after passing through the area where the first heat exchanger 310 is installed have.

The second heat exchanging unit 315 may be disposed on a flow path connecting the second air suction unit 121 and the second suction hole 212a. When the blower 200 is driven, The air flowing from the first heat exchanger 121 to the second suction hole 212a passes through the area where the second heat exchanger 315 is installed and then sucked into the blower 200 through the second suction hole 212a .

As an example, the first heat exchanging unit 310 and the second heat exchanging unit 315 may be configured as a refrigerant-air heat exchanger such as a fin-tube heat exchanger or a microchannel tube heat exchanger for exchanging air with refrigerant .

Also, the first heat exchanging unit 310 and the second heat exchanging unit 315 may be provided in such a manner that the refrigerant flow paths through which the refrigerant flows are connected in series, or the refrigerant flow paths are connected in parallel.

The first heat exchanging part 310 and the second heat exchanging part 315 may be connected to each other by a separate refrigerant tube connecting between the first heat exchanging part 310 and the second heat exchanging part 315, have.

As another example, the first heat exchanging unit 310 and the second heat exchanging unit 315 may be part of a single heat exchanging unit. In this case, one heat exchange unit may be formed in a substantially U-shape, and a portion corresponding to the left side of the heat exchange unit is a first heat exchange unit 310, and a portion corresponding to the right side of the heat exchange unit is a second heat exchange unit 315), and a portion corresponding to the rear portion of the heat exchange unit may constitute a rear heat exchange unit connecting between the first heat exchange unit 310 and the second heat exchange unit 315.

As another example, the first heat exchanging part 310 and the second heat exchanging part 315 may not be formed as one heat exchanging unit, but may also be provided with separate heat exchangers which are not connected to each other .

In addition, the air conditioning module 10 provided in the indoor unit 1 of the present embodiment may further include filter modules 320 and 325. In this embodiment, the air conditioning module 10 is illustrated as including a first filter module 320 and a second filter module 325.

At this time, the first filter module 320 is installed between the first suction body 110 and the blower 200, more specifically between the first suction body 110 and the first heat exchanger 310. The second filter module 325 is installed between the second suction body 120 and the blower 200 and more specifically between the second suction body 120 and the second heat exchanger 315, 1 filter module 320 and the second filter module 325 are disposed to be laterally spaced apart from each other with the air blowing device 200 interposed therebetween.

The first filter module 320 and the second filter module 325 are provided with a prefilter 320a for filtering a large dust and a heap filter or an electrostatic precipitator for filtering minute dust smaller than the dust filtered by the prefilter 320a A dust filter 320b such as a filter, and a deodorization filter 320c such as an activated charcoal filter or a carbon filter for removing odors. In this embodiment, the first filter module 320 and the second filter module 325 are exemplified as including both the pre-filter 320a, the dust-collecting filter 320b, and the deodorizing filter 320c.

As an example, each of the first filter module 320 and the second filter module 325 is configured such that the pre-filter 320a and the dust-collecting filter 320b are arranged in the order of the pre-filter 320a and the dust- As shown in FIG.

As another example, each of the first filter module 320 and the second filter module 325 may include a pre-filter 320a and a deodorization filter 320c along the air flow direction, As shown in FIG.

As another example, each of the first filter module 320 and the second filter module 325 may include a pre-filter 320a, a deodorization filter 320c, and a dust collection filter 320b, The deodorization filter 320c, and the dust collection filter 320b in this order.

Each of the first filter module 320 and the second filter module 325 may be provided in the form of a prefilter 320a, a deodorization filter 320c and a dust filter 320b installed in the filter frame 320d have. In this case, each of the first filter module 320 and the second filter module 325 is configured such that the pre-filter 320a, the deodorization filter 320c, and the dust filter 320b together with the filter frame 320d constitute one module can do.

The filter frame 320d and the suction bodies 110 and 120 may be provided with filter sliding rails capable of slidingly guiding at least one of the pre-filter 320a, the deodorizing filter 320c, and the dust- have.

The filter sliding rail includes a first filter sliding rail formed on the filter frame 320d so that a part of the pre-filter 320a, the deodorizing filter 320c, and the dust-collecting filter 320b is slide-guided on the filter frame 320d, And a second filter sliding rail formed on the suction bodies 110 and 120 so that the rest of the pre-filter 320a, the deodorizing filter 320c, and the dust-collecting filter 320b are slide-guided to the suction bodies 110 and 120.

The filter frame 320d is provided with a prefilter 320a, a deodorization filter 320c and a dust collection filter 320b so that at least one of the prefilter 320a, the deodorization filter 320c and the dust collection filter 320b can be elastically attached and detached. And 320b may be formed.

The first filter module 320 and the second filter module 325 may be arranged symmetrically with respect to the air conditioning module 10 and may be provided so that the filter is installed in the same configuration, They may be different from each other.

As another example, the first filter module 320 and the second filter module 325 may be provided in such a manner that a plurality of filters are arranged in the vertical direction, and the types of the filters located on the upper side and the lower side are Or may be provided in a different arrangement.

On the other hand, the discharge guide portions 140 and 145 are provided in front of the air conditioning module 10, more specifically, in front of the air blowing device 200. The discharge guide portions 140 and 145 are provided in front of the discharge portion 215 of the air blowing device 200 and discharge flow paths a and b are formed in the discharge guide portions 140 and 145 therein. The inlet side of the discharge flow paths a and b is connected to the discharge portion 215 and the outlet side of the discharge flow paths a and b is branched into a number corresponding to the number of the discharge devices 400 and 450 to be described later, 400, and 450, respectively.

In this embodiment, the discharge passages a and b include a first discharge passage a and a second discharge passage b in which the outlets branch in different directions, and the discharge guide portions 140, A first discharge guide portion 140 in which a discharge passage a is formed and a second discharge guide portion 145 in which a second discharge passage b is formed.

A plurality of discharge devices 400 and 450 provided in the plurality of discharge guide sections 140 and 145 are operated to adjust the opening degree of the discharge flow paths a and b formed in the discharge guide sections 140 and 145, respectively.

Each of the discharging devices 400 and 450 is operated to adjust the degree of opening of the discharging outlets a and b respectively formed in the discharging guide portions 140 and 145. The operation of each of the discharging devices 400 and 450 is independently .

The ejection apparatuses 400 and 450 include a first ejection apparatus 400 installed in the first ejection guide unit 140 and a second ejection apparatus 450 installed in the second ejection guide unit 145 . The first discharging device 400 is installed in the first discharging guide part 140 and is operated to regulate the degree of opening of the outlet of the first discharging flow path a, (145) so as to adjust the degree of opening of the outlet of the second discharge passage (b).

The operations of the first and second discharging devices 400 and 450 are performed independently of each other so that the control of the discharge mode of the air through the first discharging flow path a and the control of the flow rate of the air through the second discharging flow path b And the discharge mode of the air is independently controlled.

[Structure of blower device]

The air blowing device 200 is disposed between the first suction body 110 and the second suction body 120. The air blowing apparatus 200 is configured such that air is sucked into the air conditioning module 10 through the side of the air conditioning module 10 and air is discharged to the outside of the air conditioning module 10 through the front of the air conditioning module 10 And comprises at least one double suction centrifugal fan (201, 202, 203).

In this embodiment, the blowing apparatus 200 is exemplified as a structure in which a plurality of double suction centrifugal fans 201, 202, and 203 are vertically connected. As an example, the fan apparatus 200 may be configured such that two suction centrifugal fans 201, 202, and 203 arranged in the vertical direction are connected to each other. In another example, the fan apparatus 200 includes three suction centrifugal fans The fans 201, 202 and 203 may be connected.

When the air blowing apparatus 200 includes three or more double suction centrifugal fans 201, 202, and 203, the plurality of double suction centrifugal fans 201, 202, and 203 include the upper two suction centrifugal fans 203 positioned at the uppermost position, And at least one central double-suction centrifugal fan 202 disposed between the upper side double suction centrifugal fan 203 and the lower dual suction centrifugal fan 201. [

Each of the double suction centrifugal fans 201, 202, and 203 may include a scroll housing 210, an impeller 220, and a driving unit 230.

The scroll housing 210 forms an outer appearance of both the suction centrifugal fans 201, 202 and 203, and a space for accommodating the impeller 220 is formed in the scroll housing 210. A first suction hole 211a and a second suction hole 212a are formed in a side portion of the scroll housing 210 to form a passage through which the outside air is sucked to the inside of the impeller 220. The scroll housing 210 may include a first side plate 211, a second side plate 212, a scroll 213, a connecting plate 214, and a discharge unit 215.

The first side plate 211 is disposed on one side of the scroll housing 210 and forms one side, that is, the left side, of the scroll housing 210. In the first side plate 211, a first suction hole 211a is formed to penetrate in the lateral direction.

The second side plate 212 is disposed on the other side of the scroll housing 210 and forms the other side, i.e., the right side, of the scroll housing 210. In the second side plate 212, a second suction hole 212a is formed to penetrate laterally.

The first side plate 211 and the second side plate 212 are disposed to be spaced apart from each other at a predetermined interval along the lateral direction, and are disposed to face each other in the lateral direction. A scroll (213) is provided between the first side plate (211) and the second side plate (212). A space for receiving the impeller 220 is formed in the scroll 213 and an inner circumferential surface of the scroll 213 is formed as a curved surface surrounding the outer circumferential surface of the impeller 220.

A connecting plate 214 is disposed between the first side plate 211 and the second side plate 212 and on the outer side in the circumferential direction of the scroll 213. The connecting plate 214 surrounds the circumferential outer side of the scroll 213 between the first side plate 211 and the second side plate 212 and connects the first side plate 211 and the second side plate 212, A front surface and a rear surface, and upper and lower surfaces of the housing 210 are formed.

The discharge portion 215 is provided in front of the scroll housing 210. The discharge unit 215 is formed so as to pass through the front of the scroll 213 and the connecting plate 214 so that the air sucked into the housing space in which the impeller 220 is accommodated is discharged to the outside of the blower 200 .

The impeller 220 is provided so as to be rotatable about a laterally extending axis. The impeller (220) has a space portion through which air sucked through the side of the impeller (220) flows.

The impeller 220 includes a hub 221 having a rotation shaft connection portion to which a rotation shaft of a motor provided in the driving portion 230 is connected. The impeller 220 connected to the rotation shaft of the motor provided in the driving unit 230 through the hub 221 is provided to be rotatable about a laterally extending axis.

The impeller 220 includes a first blade 223 formed on one side of the hub 221, that is, a left side surface of the hub 221, and a second blade 223 formed on the other side of the hub 221, And the second blade 225 may be further included.

The impeller 220 may include a turbo fan, a sirocco fan, or the like. When the impeller 220 is provided in a form including a turbo fan, the first blade 223 and the second blade 225 may be configured in the form of a rear blade of a turbo fan. When the impeller 220 is provided in a form including a sirocco fan, the first blade 223 and the second blade 225 may be configured as multi-blade blades of a sirocco fan.

The first blade 223 is installed so as to be positioned between the left side surface of the hub 221 and the first side plate 211 of the scroll housing 210 and spaced apart from the first side plate 211 . The second blade 225 is installed between the right side surface of the hub 221 and the second side plate 212 of the scroll housing 210 so as to be spaced apart from the second side plate 212 do.

In the impeller 220 thus formed, a space portion into which the air sucked through the side of the impeller 220 flows is formed. The driving unit 230 may be installed inside the impeller 220 having the space formed therein. In this embodiment, the driving unit 230 is exemplified as including a motor that provides rotational force.

A bracket 260 may be coupled to the scroll housing 210. A bracket 260 coupled to the scroll housing 210 may be coupled to a mounter 265 on which the drive unit 230 is mounted. The driving unit 230 is mounted on the mount 265 and is fixed to the inside of the impeller 220. The rotation axis of the driving unit 230 installed in this way can be arranged in the horizontal direction and the impeller 220 can be rotated around the rotation axis of the driving unit 230 arranged in this way.

On the other hand, the fan apparatus 200 may further include a horizontal plate 240 disposed between two vertically adjacent two-suction centrifugal fans.

The horizontal plate 240 can be connected to the lower portion of the scroll housing 210 of the dual suction centrifugal fan located on the upper side among the two suction centrifugal fans adjacent in the vertical direction, And may be connected to the upper portion of the scroll housing 210 of the fan.

The air conditioning module 10 may further include a first side frame 130 and a second side frame 135 that support the air blowing device 200. The first side frame 130 is fixed to the inside of the first suction body 110 and the second side frame 135 is fixed to the inside of the second suction body 120. Each of the first side frame 130 and the second side frame 135 is formed in the shape of a rectangular frame and each of the first side frame 130 and the second side frame 135 has a first suction body 110 Through the second suction body 120 and the second suction body 120, through the air blowing device 200 side.

The blower 200 may further include a first fastening plate 250 fixed to the first side frame 130 and a second fastening plate 255 fastened to the second side frame 135 .

The first fastening plate 250 may be formed to protrude leftward from the rear portion of the scroll housing 210. The first fastening plate 250 may be fastened by using a fastening member such as a screw or a hook, And may be fixed to the frame 130.

The second fastening plate 255 may protrude rightward from the rear portion of the scroll housing 210. The second fastening plate 255 may also be fastened to the second side frame 135 in the form of a hook using a fastening member such as a screw or a hook or a hook.

The first fastening plate 250 can function as a left shielding portion that obstructs the space between the first side plate 211 of the scroll housing 210 and the rear end of the first side frame 130, It can function as a shielding portion that intercepts between the second side plate 212 of the housing 210 and the rear end of the second side frame 135.

[Structure of Discharge Guide and Discharging Apparatus]

The first discharge passage a formed inside the first discharge guide portion 140 is formed so as to extend forward from the inlet side of the discharge passage a and b and the outgoing side thereof is shifted to the left side from the discharge portion 215 As shown in FIG. The second discharge passage b formed inside the second discharge guide portion 145 is formed so as to extend forward from the inlet side of the discharge passage a and b and the outlet side thereof extends from the discharge portion 215 to the right side And extend forward so as to be positioned at a biased position.

In the first discharge guide portion 140, a first discharge device 400 is provided to operate to adjust the opening degree of the first discharge passage a. The second ejection guide unit 145 is provided with a second ejection apparatus 450 so as to control the degree of opening of the second ejection channel b.

Each of the discharge guide portions 140 and 145 may include a guide body portion 140a, an opening portion 140b, and a flow path side wall portion 140c.

The guide main body part 140a is installed in front of the first suction body 110 and the second suction body 120 and is disposed in front of the first suction body 110 and the second suction body, And forms an outer wall of the discharge guide portions 140 and 145 which obstruct the opened front side of the module 10.

The opening 140b is formed in the front of the guide body portion 140a so as to pass through in the front-rear direction. The opening 140b forms a passage for discharging the air inside the air conditioning module 10 to the outside of the air conditioning module 10, that is, the room. The lateral opening width of the opening 140b may be determined according to the wind direction range to be implemented through the adjustment of the rotational angle of the discharge devices 400 and 450. [ The lateral opening width of the opening portion 140b is set to be larger than the width of the guide body portion 140a from the center of the guide body portion 140a when the airflow direction of the air discharged through the discharge devices 400, And may be formed to have a width extending in the lateral direction of the portion 140a by 35 degrees or more.

The flow path side wall portion 140c is provided in each of the first discharge guide portion 140 and the second discharge guide portion 145 so that the discharge flow path a and b are formed inside the guide body portion 140a Both side walls of the discharge flow paths a and b are formed. A first discharge passage a is formed in the first discharge guide portion 140 by a flow passage side wall portion 140c formed in the first discharge guide portion 140 and a second discharge guide passage a A second discharge passage b is formed in the second discharge guide portion 145 by a passage side wall portion 140c formed inside the second discharge guide portion 145. [

The flow path side wall portion 140c provided in the first discharge guide portion 140 and the inlet side of the first discharge flow path a therein are connected to the discharge portion 215. The flow path side wall portion 140c provided in the first discharge guide portion 140 and the outlet side of the first discharge flow path a in the first discharge guide portion 140 are connected to the flow path side wall portion 140c ) And the first discharge passage (a) therein, but is positioned biased toward the first suction body (110) side. That is, the flow path side wall portion 140c provided in the first discharge guide portion 140 and the first discharge flow path a therein are formed so as to be inclined so that the discharge side thereof is positioned at a position offset to the left.

The flow path side wall portion 140c provided in the second discharge guide portion 145 and the inlet side of the second discharge flow path b therein are connected to the discharge portion 215. The flow path sidewall portion 140c provided in the second discharge guide portion 145 and the outlet side of the second discharge flow path b in the second discharge guide portion 145 are connected to the flow path side wall portion 140c ) And the second discharge flow passage (b) inside thereof, but is biased toward the second suction body (120) side. The flow path side wall portion 140c provided in the second discharge guide portion 145 and the second discharge flow passage b therein are formed so as to be inclined such that the exit side thereof is positioned at the right side.

As a result, the outlets of the first discharge passage (a) and the outlets of the second discharge passage (b) are located at positions spaced laterally from each other.

According to the present embodiment, the ejection apparatuses 400 and 450 include a first ejection apparatus 400 installed in the first ejection guide unit 140 and a second ejection apparatus 450 installed in the second ejection guide unit 145 . Each of the first ejecting apparatus 400 and the second ejecting apparatus 450 may include the ejecting body portion 400a and the ejecting opening portion 400b.

The discharge main body portion 400a forms an outer appearance of the discharge devices 400 and 450 and is installed in the discharge guide portions 140 and 145 to be rotatable laterally. The discharge main body portion 400a may be formed in a cylindrical shape in which a space is formed therein and a rear portion, an upper portion and a lower portion are opened.

The rotation center of the discharge main body portion 400a may be connected to the rotation axis of the drive motor provided to generate the power for rotating the discharge main body portion 400a. At this time, the drive motor connected to the discharge main body portion 400a, And may be provided in the form of a step motor capable of rotating the rotary shaft 400a in the left-right direction by a selected rotation angle.

The discharge opening portion 400b forms a passage for passing the inside and the outside of the discharge main body portion 400a to the outer peripheral surface of the discharge main body portion 400a. In this embodiment, it is exemplified that the discharge opening portion 400b is formed so as to pass through the front side of the discharge main body portion 400a.

The discharge main body part 400a may be divided into an open area and a closed area. The open region is a region where the discharge opening portion 400b is formed on the outer peripheral surface of the discharge main body portion 400a and the closed region is a closed region where the outer peripheral surface of the discharge main body portion 400a is closed. The open area and the closed area separate the discharge main body part 400a from the left and right sides of the outer peripheral surface of the discharge main body part 400a.

The discharge main body portion 400a is provided between the open position where the discharge opening portion 400b is connected to the discharge flow paths a and b and the closed position where the discharge opening portion 400b and the discharge flow paths a and b are closed Lt; / RTI >

In the closed position, the closed region of the discharge main body portion 400a is located in the opening portion 140b, and the discharge main body portion 400a closes the opening portion 140b. In the open position, the open region of the discharge main body portion 400a is located in the opening portion 140b, and the discharge flow paths a and b discharge the discharge guide portions 140 and 145 through the opening portion 140b and the discharge opening portion 400b, May be open to the outside of the devices 400 and 450.

A first insertion space 140e is formed between one side wall of the guide body 140a and one side wall of the flow side wall 140c and the other side wall of the guide body 140a and the flow side wall 140c The second insertion space portion 140f is formed between the other side wall of the main body 110a.

In the first guide body portion 140a, the first insertion space portion 140e is a space formed between the wall surface adjacent to the first suction body 110 and the side wall of the flow-path side wall portion 140c disposed opposite to the first insertion body portion 140e, that is, Is a space formed on the left side of the first discharge passage (a), and the second insertion space portion 140f corresponds to a space formed on the right side of the first discharge passage (a).

That is, the first insertion space 140e and the second insertion space 140f are spaces formed on the left side and the right side with the flow path side wall portion 140c and the first discharge flow path a therebetween, The space portion 140e and the first discharge passage a and the second insertion space 140f are defined by a flow passage side wall portion 140c formed in the first guide body portion 140a.

In addition, in the second guide body portion 140a, the first insertion space portion 140e has a space formed between the wall surface adjacent to the second suction body 120 and the side wall of the flow-path side wall portion 140c disposed to face the second suction body 120, That is, a space formed on the right side of the second discharge passage b and the second insertion space 140f corresponds to a space formed on the left side of the second discharge passage b.

That is, the first insertion space 140e and the second insertion space 140f are spaces formed respectively on the right side and the left side with the flow path side wall portion 140c and the second discharge flow path b interposed therebetween, The space portion 140e, the second discharge flow passage b and the second insertion space portion 140f are defined by a flow path side wall portion 140c formed in the second guide body portion 140a.

A partition 140d for partitioning between the first discharge guide portion 140 and the second discharge guide portion 145 is provided between the first discharge guide portion 140 and the second discharge guide portion 145 . The other side wall of the guide body portion 140a adjacent to the second insertion space portion 140f may be formed by both side walls of the partition portion 140d.

The closed region of the discharge main body portion 400a is located in the opening portion 140b so that the discharge main body portion 400a closes the opening portion 140b, Is inserted into the portion 140f. In the open position, the open region of the discharge main body portion 400a is located in the opening portion 140b, and the discharge flow paths a and b are connected to the discharge guide portions 140 and 145 through the opening portion 140b and the discharge opening portion 400b, And the closed region of the discharge main body portion 400a is inserted into the first insertion space portion 140e.

[Overall operation of the entire air conditioner]

Hereinafter, the operation and effect of the air conditioner according to the present embodiment will be described.

When the operation of the air conditioner is started, air is exchanged by the heat exchanging units 310 and 315 in the air conditioning module 10 provided in the indoor unit 1, and the heat exchanged air in the indoor unit 1 is discharged And is discharged to the indoor space through the apparatuses 400 and 450.

Specifically, when the operation of the air blowing apparatus 200 is started, a flow of air outside the indoor unit 1, that is, indoor air, is introduced into the air conditioning module 10, To the inside of the air conditioning module 10 through the two side portions of the air conditioning module 10.

At this time, the room air passes through the first air intake part 111 formed in the first intake body 110 and flows into the inside of the air conditioning module 10 through the left side of the air conditioning module 10, Through the second air intake part 121 formed in the air conditioning module 120 and may be introduced into the air conditioning module 10 through the right side of the air conditioning module 10.

The air introduced into the air conditioning module 10 is sucked into the air blowing device 200 and the air sucked into the air blowing device 200 is blown through the blowing device 200 As shown in FIG.

The air introduced into the air conditioning module 10 from the left side of the air conditioning module 10 through the first air intake part 111 is supplied to the inside of the air conditioning module 10 through the first air intake part 111 and the air blowing device 200 Exchanged by the first heat exchange unit 310 and then introduced into the interior of the air blowing device 200 through the first suction hole 211a formed in the first side plate 211 of the air blowing apparatus 200. [ The air introduced into the air conditioning module 10 from the right side of the air conditioning module 10 through the second air intake part 121 is supplied to the air intake part 121 through the second air intake part 121 and the air blowing device 200 Exchanged by the second heat exchanger 315 and then introduced into the blower 200 through the second suction hole 212a formed in the second side plate 212 of the blower 200. [

The air sucked into the inside of the air blowing device 200 through both side portions of the air blowing device 200 is discharged to the front of the air blowing device 200 through the discharge portion 215 formed in front of the air blowing device 200 . The air discharged to the front of the air blowing apparatus 200 passes through the discharging apparatuses 400 and 450 and is discharged toward the outside of the indoor unit 1, that is, toward the indoor space.

That is, the air conditioner of the present embodiment includes a first heat exchanging unit 310 that sucks air at the left and right sides of the indoor unit 1, and air sucked through the respective points is installed at both sides of the indoor unit 1, Exchanged by the first heat exchanger 315 and the second heat exchanger 315, and then the heat exchanged air is discharged in the forward direction.

The air conditioner of this embodiment is provided in such a manner that after sucking in air from both the left and right sides using both the suction centrifugal fans 201, 202, 203 and then concentrating and discharging the sucked air forwardly without changing the direction in the vertical direction or the lateral direction , It is possible to reduce the flow path resistance while improving the air suction efficiency, thereby providing a further improved blowing performance.

In addition, the air conditioner of the present embodiment is configured such that air is sucked from both the left and right sides by using both the suction centrifugal fans 201, 202, and 203, and a plurality of spaces are formed in the plurality of spaces formed between the portions where air is sucked and the double suction centrifugal fans 201, 202, The heat exchange units 310 and 315 can be provided in the form of being disposed, respectively, thereby maximizing the heat transfer area, thereby providing a further improved cooling and heating performance.

The discharge position and direction of the air discharged to the front of the air blowing device 200 can be adjusted by the discharge devices 400 and 450 installed in front of the air conditioning module 10 as described above.

According to the present embodiment, the discharge passages a and b, which are the passages through which air discharged to the front of the air blowing device 200 flows, are divided into a first discharge passage a forming a passage branched in the left- And branches to the flow path (b). The first ejection guide unit 140 having the first ejection flow path a therein is provided with a first ejection apparatus 400 so as to control the degree of opening of the exit side of the first ejection flow path a. The second ejection guide unit 145 in which the second ejection flow path b is formed is provided with a second ejection apparatus 450 so as to control the degree of opening of the exit side of the second ejection flow path b.

 The operations of the first and second discharging devices 400 and 450 are performed independently of each other, thereby controlling the blowing mode through the first discharging flow path a and the blowing mode through the second discharging flow path b Adjustment is performed independently of each other.

For example, when intensive ventilation through the left side of the indoor unit 1 of the indoor unit 1 is to be realized, the first discharging device 400 is operated while maintaining the position of the second discharging device 450 in the closed position. The first discharging device 400 is rotated to the open position.

When the position of the first discharging device 400 is changed to the open position, the open area of the first discharging device 400 is located in the opening 140b, Can be opened to the outside of the indoor unit (1) through the opening (140b) of the indoor unit (140) and the discharge opening (400b) of the first discharge device (400).

The closed region of the second discharging device 450 is located in the opening portion 140b so that the opening portion 140b of the second discharging guide portion 145 The second discharging device 450 can not close the second discharging device 450.

The outlet side of the second discharge passage b is closed by the second discharge device 450 and only the outlet side of the first discharge passage a is opened by the first discharge device 400, Only the blowing by the blower 400 is performed. When only the air blowing by the first discharging device 400 is performed in this manner, concentrated blowing to a partial area of the indoor space located on the left side of the indoor unit 1 can be performed.

The direction of the air blow by the first discharging device 400 can be adjusted by changing the position of the discharging opening 400b of the first discharging device 400 and by controlling the position of the discharging opening 400b for controlling the wind direction The first discharging device 400 is disposed within the range in which the discharging opening portion 400b of the first discharging device 400 is connected to the first discharging flow path a and the opening portion 140b of the first discharging guide portion 140 Or the like.

As another example, when intensive ventilation through the right side of the indoor unit 1 is to be realized, the first ejection apparatus 400 is changed to the closed position and the second ejection apparatus 450 And the position of the second discharging device 450 is changed to the open position.

When the position of the second discharging device 450 is changed to the open position, the open area of the second discharging device 450 is located in the opening 140b, Can be opened to the outside of the indoor unit (1) through the opening (140b) of the first discharge device (145) and the discharge opening (400b) of the second discharge device (450).

When the position of the first discharging device 400 is changed to the closing position, the closed region of the first discharging device 400 is located in the opening 140b, and accordingly, the opening 140b of the first discharging guide portion 140, Is closed by the first discharge device (400) so that the blowing through the first discharge device (400) can no longer be made.

The outlet side of the first discharge passage a is closed by the first discharge device 400 and only the outlet side of the second discharge passage b is opened by the second discharge device 450, Only the blowing by the blower 450 is performed. If only the air blowing by the second discharging device 450 is performed in this manner, intensive ventilation can be performed on a partial area of the indoor space located on the right side of the indoor unit 1. [

The direction of the air blow by the second discharging device 450 may be adjusted by changing the position of the discharging opening 400b of the second discharging device 450 and may be adjusted by adjusting the position of the discharging opening 400b The second discharging device 450 is disposed within the range in which the discharging opening portion 400b of the second discharging device 450 is connected to the second discharging flow path b and the opening portion 140b of the second discharging guide portion 145 Or the like.

As another example, when it is desired to implement airflow through the entire front area of the indoor unit 1, the positions of both the first ejection apparatus 400 and the second ejection apparatus 450 are changed to the open position.

When the positions of both the first ejecting apparatus 400 and the second ejecting apparatus 450 are changed to the open position, the blowing through the first ejecting apparatus 400 and the blowing through the second ejecting apparatus 450 are performed together , So that air blowing to the entire front area of the indoor unit (1) can be performed evenly.

That is, the air conditioner of the present embodiment can selectively perform left / right air blowing and front air blowing, and can provide an independent airflow control function using a plurality of independent discharge devices 400 and 450.

The air conditioner of the present embodiment as described above constitutes a flow path of a bidirectional suction type and a front direct discharge type in which air is sucked from both the left and right sides to concentrate and forwardly and the heat exchange portions 310 and 315 It is possible to improve the air suction efficiency and the heat transfer area while reducing the flow path resistance and to provide an improved ventilation performance compared to the size of the air conditioner.

[First Embodiment of Structure of Scroll Housing]

FIG. 4 is a perspective view illustrating the scroll housing according to the first embodiment of the present invention, and FIG. 5 is a front view of the scroll housing shown in FIG. 6 is a cross-sectional view taken along line VI-VI in Fig. 4, and Fig. 7 is a cross-sectional view taken along line VII-VII in Fig.

3 to 5, a connecting plate 214 is disposed between the first side plate 211 and the second side plate 212 and on the outer side in the circumferential direction of the scroll 213. The connecting plate 214 surrounds the circumferential outer side of the scroll 213 between the first side plate 211 and the second side plate 212 and connects between the first side plate 211 and the second side plate 212, A front surface and a rear surface of the scroll housing 210, and top and bottom surfaces.

The discharge portion 215 is provided in front of the scroll housing 210. The discharge unit 215 is formed to pass through the front surface of the scroll housing 210 formed by the connecting plate 214 and the front of the scroll 213 and is formed to be received in the scroll housing 210 accommodated in the impeller 220 Thereby forming a passage through which the air sucked into the space is discharged to the outside of the air blowing device 200.

In addition, a cut-off portion 216 is formed in front of the scroll housing 210. The cutoff portion 216 is formed at the interface between the front surface 214a and the discharge portion 215 of the scroll housing 210 formed by the connection plate 214 and allows the flow of air discharged toward the front of the scroll housing 210 Guide.

The air flow in the air blowing apparatus 200 can be effectively prevented by allowing air to be sucked into the interior of the impeller 220 through the both side surfaces of the scroll housing 210, 215, respectively.

That is, as the impeller 220 rotates, the air sucked into the center of the impeller 220 through the suction holes 211a and 212a formed on both sides of the scroll housing 210 is discharged to the outer peripheral surface side of the impeller 220 by centrifugal force And passes through the gap between the blades 223 and 225 to be discharged to the outside of the impeller 220.

At this time, the air that has escaped to the outside of the impeller 220 is guided by the inner circumferential surface of the scroll 213 surrounding the impeller 220 and the cut-off portion 216 and is discharged forward through the discharge portion 215 .

The cut-off portion 216 is formed in the upper end portion of the front surface of the scroll housing 210 formed by the connecting plate 214 and is formed in the front and rear portions of the scroll housing 210 so as to reduce the passage resistance at a portion where air passes through the cut- It is preferable to form it in a rounded shape in the direction of the arrow.

In addition, the cut-off portion 216 is formed to have a concave shape in the width direction center portion in a downward direction as compared with both sides in the width direction. In this embodiment, the cut-off portion 216 is illustrated as being formed in the "V" shape in which the center portion in the width direction forms the lowest surface.

According to the present embodiment, the impeller 220 includes a hub 221 having a rotation shaft connection portion to which a rotation shaft of a motor provided in the driving portion 230 is connected. The hub 221 is disposed inside the impeller 220 and laterally divides the space formed inside the impeller 220.

That is, the space portion inside the impeller 220 is partitioned into a left space portion and a right space portion by a hub 221 installed inside the impeller 220, and air sucked through the first suction hole 211a is partitioned into a left space portion And the air sucked through the second suction hole 211b flows into the right space portion.

The flow rate of air flowing out to the outside of the impeller 220 at this time is controlled by the impeller 220 in which the hub 221 is located, The distance from the center to the center in the width direction of the body 220 increases. That is, the closer to the hub 221 the angular position of the impeller 220 in the width direction, the greater the flow rate of the air discharged to the discharge portion 215 side.

As an example, the driving unit 230 may be installed inside the left space part. In this case, when the hub 221 is disposed at the center in the width direction of the impeller 220, the space occupied by the driving unit 230 causes a difference between the volume of the left space and the volume of the right space, The suction performance difference between the left side and the right side of the blower 200 may be increased to increase the noise and degrade the blowing performance of the blower 200.

The hub 221 may be disposed at a position slightly offset to the right in the widthwise center of the impeller 220 so that the left and right sides of the impeller 220 may exhibit the same or similar suction performance.

The cut-off portion 216 is preferably formed in a shape in which the lowest surface is formed at a position in the width direction corresponding to the widthwise position of the hub 221, that is, at a position slightly rightwardly shifted from the center in the width direction of the cut- Do. That is, it is preferable that the cutoff portion 216 is formed in a more concave shape in the downward direction as the position along the width direction of the cutoff portion 216 is closer to the hub 221.

The cut-off portion 216 formed in this shape increases the width in the vertical direction of the passage formed by the discharge portion 215 as the flow rate discharged from the impeller 220 is larger, The resistance is reduced, and the blowing performance of the blower 200 is improved.

On the other hand, in the cut-off portion 216, the cut-off portions 216, which are adjacent to the first side plate 211 and the second side plate 212, Are formed to have the same width in forward and backward directions.

That is, the interface between the front surface of the scroll housing 210 and the discharge portion 215 formed by the cutoff portion 216 includes a left side portion adjacent to the first side plate 211, a right side portion adjacent to the second side plate 212, And the center portion between the right side portion and the right side portion are equal to each other.

4 and 6, the cut-off portion 216 includes a front upper end portion of the connecting plate 214 forming the front surface 214a of the scroll housing 210, And is formed in a curved shape connecting between the front ends.

Since the scroll 213 is formed in a curved shape, the front surface 214a of the scroll housing 210 formed by the connecting plate 214 is formed in a vertical plate shape, The front-rear direction distance between the front surface of the scroll housing 210 and the scroll 213 is gradually increased in a downward direction.

When the front surface of the scroll housing 210 connected to the front side of the cutoff portion 216 is formed in the form of a flat plate vertically connected to both the side surface and the bottom surface of the scroll housing 210, It is inevitably different from each other in the width direction position of the cutoff portion 216. [

The thickness of the cut-off portion 216 in the forward-backward direction is reduced as the portion located at a relatively upper portion on the cut-off portion 216 as in the laterally opposite side ends of the cut-off portion 216, Off portion 216 is formed in such a manner that the thickness of the cut-off portion 216 in the front-back direction increases as the portion located relatively below the cut-off portion 216 is formed.

However, when the cut-off portion 216 is formed in such a manner that the thickness of the cut-off portion 216 in the front-rear direction varies depending on its lateral position, the area of air contact at each lateral angle position of the cut- Which can act as a cause of flow resistance and noise increase.

In this case, the portion located at a portion having a large flow rate of air discharged to the discharge portion 215 side in the width directional position of the cutoff portion 216, that is, the portion located relatively below the cutoff portion 216, The thickness of the cut-off portion 216 is increased to increase the width of the passage formed by the discharge portion 215 as the discharge flow rate increases, resulting in a discoloration of the "V" shape of the cutoff portion 216 .

When the cut-off portion 216 is formed in a concave shape in the shape of "V" in order to increase the width in the vertical direction of the passage located at a part where the flow rate of the impeller 220 is large, The effect of reducing the flow path resistance, which is obtained by forming the cutoff portion 216 in the "V" shape, is weakened.

As a result, in the above case, only the cost required to change the cut-off portion 216 into a concave shape in the "V" shape is added, and the effect of improving the blowing performance of the blower 200 is not obtained.

In view of this, in the present embodiment, the cut-off portion 216 is formed in a concave shape in a "V" shape so that the position along the width direction of the cut- And both widthwise sides of the cut-off portion 216 and widthwise center portions of the cut-off portions 216 are formed to have the same width in forward and backward directions.

That is, the cutoff portion 216 of the present embodiment is formed so as to have a concave shape in a "V"

4 and 7, the front surface 214a of the connecting plate 214 formed at the upper end of the cut-off portion 216 has a recessed central portion in the width direction as compared with both widthwise sides thereof .

The front surface 214a of the connecting plate 214 having the cutoff portion 216 formed at the upper end thereof is formed so that the portions of the cutoff portion 216 along the width direction are kept at the same interval in the forward and backward directions from the inner circumferential surface of the scroll 213 .

For example, if the cutoff portion 216 is formed so as to have a concave "V" shape in the widthwise direction when viewed from the front, the cutoff portion 216 is formed on the front surface 214a of the connecting plate 214 formed at the upper end, May be formed so as to form a concave "V" shape rearward in the center in the width direction when viewed from above.

The front surface 214a of the connecting plate 214 is connected to the connection plate 214 so that the shape of the metal mold used to manufacture the scroll housing 210 is simplified and the scroll housing 210 can be easily removed from the mold. In a direction perpendicular to the upper direction.

The blowing device 200 of the present embodiment as described above is configured such that the width of the passage formed by the discharge portion 215 is increased as the flow rate discharged from the impeller 220 is larger, Since the flow resistance of the discharge portion 215 is reduced by including the portion 216 and the discharge flow rate through the discharge portion 215 can be increased without increasing the rotational force of the fan, Thereby providing improved ventilation performance.

[Second Embodiment of Structure of Scroll Housing]

Meanwhile, the blowing device having the above-described structure is merely a preferred embodiment of the present invention, and various embodiments can be substituted for the same.

Hereinafter, other embodiments of the present invention will be described with reference to FIGS. 8 to 14. FIG.

Here, the same reference numerals as those shown in the drawings denote the same members having the same function, and a duplicate description will be omitted here.

FIG. 8 is a perspective view showing a scroll housing according to a second embodiment of the present invention, FIG. 9 is a front view of the scroll housing shown in FIG. 8, and FIG. 10 is a graph showing changes in air blowing amount at each position of the impeller in the lateral direction FIG.

8 and 9, the scroll housing 270 of the blower according to the second embodiment of the present invention is configured such that the shape of the cutoff portion 276 is different from that of the cutoff portion 216 (see FIG. 4) As shown in FIG.

According to this, the cut-off portion 276 may include a spline shape in which the center in the width direction forms the lowest surface.

The cutoff portion 276 is located at a position slightly shifted to the right in the widthwise position corresponding to the widthwise position of the hub 221 (see FIG. 3), that is, the widthwise center portion of the cutoff portion 276 It is preferable that the lowermost surface is formed. That is, it is preferable that the cutoff portion 276 is formed in a more concave shape in the downward direction as the position along the width direction of the cutoff portion 276 is closer to the hub 221.

The curved surface formed by the curvature corresponding to the change rate of the amount of airflow passing through the angular position of the cutoff portion 276 in the width direction of the cutoff portion 276 is larger than the curved surface of the cutoff portion 276 And a curved surface continuously connected along the width direction.

The front face 214b of the connecting plate 214 formed at the upper end of the cut-off portion 276 is recessed rearward in the center in the width direction as compared with both sides in the width direction. And is formed in a shape including a corresponding curved surface.

For example, if the cut-off portion 276 is formed so as to have a concave curved surface in the downward direction when viewed from the front, the front surface 214b of the connecting plate 214 formed at the upper end of the cut- The cut-off portion 276 may be formed to have a concave curved surface shape in the width direction center portion, but may have the same width in the front-back direction of the entirety of the cut-off portion 276 .

9 and 10, the amount of air discharged toward the discharging portion 215 increases as the position of the impeller 220 (see FIG. 3) in the widthwise direction adjacent to the hub 221 increases. At this time, the impeller 220 (Hereinafter referred to as "air amount per width direction position") passing through the width direction angular position of the cut-off portion 276 appears as a curve rather than a straight line . That is, the change in the amount of airflow in each of the widthwise positions appears as a curve in which the amount of air passing through the corresponding portion increases at a higher rate of change as the hub 221 (see FIG.

In view of this, the cut-off portion 276 of the present embodiment is formed into a shape in which curved surfaces formed with a curvature corresponding to the rate of change of the amount of wind by position are continuously connected. As a result, the shape of the passage formed by the discharging portion 215 can be formed to have a vertical width corresponding to the air volume for each widthwise position with high accuracy, so that the flow path resistance in the discharging portion 215 can be more effectively reduced So that the blowing performance of the blower can be improved more effectively.

[Third Embodiment of Structure of Scroll Housing]

FIG. 11 is a perspective view showing a scroll housing according to a third embodiment of the present invention, FIG. 12 is a view schematically showing the air flow on both lateral sides of a scroll housing in which a through passage is not formed, 11 schematically show the air flow on both lateral sides of the scroll housing shown in Figs.

Referring to FIG. 11, the fan apparatus according to the third embodiment of the present invention is provided with a through passage portion 287 formed in the scroll housing 280.

The through passage portion 287 is formed so as to pass through the scroll housing 280 and is disposed between the one side of the scroll housing 280 in the lateral direction and the other side of the scroll housing 280 in the lateral direction, Lt; / RTI > The through-passage portion 287 is exemplified by a portion of the first side plate 211 and the second side plate 212 formed laterally.

The through passage portion 287 is disposed between the scroll plate 213 and the connecting plate 214 surrounding the circumferential outer side of the scroll 213 and is formed at a plurality of points on the scroll housing 280.

For example, the through passage portion 287 may be disposed at a position of at least one of the rear upper side, the rear lower side, and the front lower side of the scroll housing 280. In this embodiment, it is exemplified that the through passage portion 287 is formed at the rear upper side, the rear lower side and the front lower side of the scroll housing 280, that is, at three points.

As described above, since the passage passage portion 287 is formed in the scroll housing 280, the scroll housing 287 can be moved in the lateral direction without passing through the impeller 220 (see FIG. 3) Thereby forming a passage in the lateral direction that allows passage therethrough. The space located on the left side of the scroll housing 280 and the space located on the right side of the scroll housing 280 are blocked by the scroll housing 280 and the impeller 220, ) Serves as a path for connecting the two closed spaces.

During operation of the blower, there may be a difference in suction performance between the left and right sides of the impeller 220 due to various factors. The flow rate of the air flowing into the left side of the impeller 220 through the first air intake part 111 (see FIG. 3) and the flow rate of the air flowing into the right side of the impeller 220 through the second air intake part 121 The difference in the air flow rate can also be caused by a number of factors.

For example, when the flow of air to the left side of the impeller 220 through the first air intake part 111 is higher than the flow of air toward the right side of the impeller 220 through the second air intake part 121 The operation of the blower can be performed with the suction performance of the right side of the impeller 220 being higher than the suction performance of the left side of the impeller 220.

In this case, if the space located on the left side of the scroll housing 2 and the space located on the right side of the scroll housing 2 are clogged as shown in Fig. 12, sufficient suction of air is possible on the right side of the impeller On the other hand, at the left side of the impeller having a low suction performance, the air introduced at a high flow rate can not be properly sucked and stagnation occurs in the space, thereby increasing the vibration and noise and deteriorating the blowing performance of the blower Problems arise.

In comparison, in the fan apparatus of this embodiment as shown in Figs. 11 and 13, a passage in the lateral direction through which the scroll housing 280 can pass laterally is formed by the passage passage portion 287. The air introduced into the space located on the left side of the scroll housing 280 can be moved to the space located on the right side of the scroll housing 280 and the air introduced into the space located on the right side of the scroll housing 280 can be moved to the scroll housing 280, To a space located on the left side of the display unit 280.

As a result of the movement of the air passing through the through passage portion 287, the air volume imbalance between the left and right sides of the scroll housing 280 can be eliminated, The air moved to the space can fill in the amount of the inflow air at the high suction performance, so that the suction performance of the blower (the entire suction performance can be improved.

3) through the first air intake part 111 (see FIG. 3) to the left side of the impeller 220 through the second air intake part 121 (see FIG. 3) Even if the impeller 220 is operated at a higher flow rate than the air flow to the right side and the suction performance of the impeller 220 is higher than that of the impeller 220 on the left side, So that the air can be sucked smoothly through both sides of the air bag.

In other words, the air conditioner of the present embodiment is configured such that a lateral passage through which the scroll housing 280 can pass laterally is formed in the scroll housing 280 so that air can be sucked smoothly through both sides of the impeller 220 , It is possible to suppress an increase in vibration and noise and to provide an improved ventilation performance.

[Internal structure of scroll housing]

14 is a side sectional view showing the internal shape of the scroll housing shown in Fig.

Referring to FIGS. 11 and 14, the scroll housing 280 of the present embodiment may be formed in a shape including a curved surface connecting portion 288.

The curved surface connecting portion 288 is formed on at least one of a connecting portion between the inner circumferential surface of the scroll 213 and the first side plate 211 and a connecting portion between the inner circumferential surface of the scroll 213 and the second side plate 212. It is exemplified that a curved surface connecting portion 288 is formed in both the connecting portion between the inner circumferential surface of the scroll 213 and the first side plate 211 and the connecting portion between the inner circumferential surface of the scroll 213 and the second side plate 212 in this embodiment.

The curved surface connecting portion 288 formed at the connecting portion between the inner circumferential surface of the scroll 213 and the first side plate 211 is formed to connect curved surfaces between the inner circumferential surface of the scroll 213 and the first side plate 211. The curved surface connecting portion 288 formed at the connecting portion between the inner circumferential surface of the scroll 213 and the second side plate 212 is formed to connect curved surfaces between the inner circumferential surface of the scroll 213 and the second side plate 212.

The curved connecting portion 288 serves to reduce resistance due to the secondary flow of air at a portion connecting between the inner circumferential surface of the scroll 213 and the side plates 211 and 212, It is possible to provide an air blowing device in which the air flow resistance inside the scroll 213 is reduced by the action of the air blowing device, thereby improving the blowing performance more effectively.

The curved surface connecting portion 288 preferably forms a curved surface having an R value of 3 to 5 mm. When the R value of the curved surface formed by the curved surface connecting portion 288 is less than 3 mm, the shape of the curved surface connecting portion 288 becomes closer to the angled edge than the curved surface, so that the curved surface connecting portion 288 provides the effect of reducing the flow path resistance It becomes difficult. If the R value of the curved surface formed by the curved surface connecting portion 288 exceeds 5 mm, only the manufacturing cost for forming the curved surface connecting portion 288 is increased compared with the increasing value of the channel resistance reducing effect obtained by increasing the R value It is preferable that the R value of the curved surface connecting portion 288 is set to about 3 to 5 mm.

FIG. 15 is a graph showing a comparison between a blowing device according to the third embodiment of the present invention and the impeller of the conventional blowing device in terms of the number of revolutions, FIG. 16 is a graph showing the relationship between the blowing device according to the third embodiment of the present invention and the conventional blowing device 14 is a graph showing a comparison of the noise according to the amount of airflow of the impeller. As shown in FIG. 14, the airflow having the scroll housing 280 having the curved surface connecting portion 288 formed between the inner circumferential surface of the scroll 213 and the second side plate 212 And an air flow rate in a blowing device having a scroll housing in which the inner scroll surface of the scroll bar 213 and the second side plate 212 are connected in an angular manner.

Experiments were carried out under the condition that the diameter of the impeller 220 was 185.0 mm, the width of the impeller 220 was 105.0 mm and the R value of the curved surface connecting portion 288 was 3 mm. The presence or absence of the curved surface connecting portion 288, Except for the number of revolutions.

As a result of the experiment, in the experiment for measuring the air flow rate by the number of revolutions of the impeller, the suction air amount A1 in the air blowing apparatus having the scroll housing 280 formed with the curved surface connecting portion 288 is larger than the suction air amount A1 in the inner surface of the scroll 213, 212) is about 2% higher than the suction air amount B1 of the blower having the scroll housing connected in an angled manner (see FIG. 15).

In the experiment for measuring the noise, the noise A2 generated in the fan apparatus having the scroll housing 280 formed with the curved surface connecting portion 288 is distributed between the inner circumferential surface of the scroll 213 and the second side plate 212 Was measured to be about 3% lower than the suction air amount B2 of the blower having the scroll housing connected in an angular manner (see FIG. 16).

That is, the scroll housing 280 having the curved surface connection portion 288 formed therein, has a scroll housing in which the inner circumferential surface of the scroll 213 and the second side plate 212 are connected in an angular manner, It is possible to confirm that the noise is lower while providing a higher suction performance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of protection of the present invention should be defined by the following claims.

1: indoor unit
10: Air conditioning module
20: Base
110: first suction body
111: first air intake part
120: second suction body
121: a second air intake part
130: first side frame
135: second side frame
140: first discharge guide portion
140a: Guide body portion
140b:
140c:
140d:
140e: a first insertion space
140f: a second insertion space
145: second discharge guide portion
200: blower
201: lower side suction centrifugal fan
202: Centrifugal centrifugal centrifugal fan
203: upper positive suction centrifugal fan
210, 270, 280: scroll housing
211: first shroud
211a: first suction hole
212: second shroud
212a: second suction hole
213: Scroll
214: connection plate
215:
216: cutoff part
276: Cutoff section
287: Through-
288:
220: Impeller
221: Hub
223: First blade
225: second blade
230:
240: Horizontal plate
250: first fastening plate
255: second fastening plate
260: Bracket
265: Mounter
310: first heat exchanger
315: second heat exchanger
320: first filter module
325: second filter module
320a: Pre-filter
320b: dust filter
320c: deodorization filter
320d: filter frame
400: First discharge device
400a:
400b: Discharge opening
450: Second Discharging Apparatus

Claims (14)

An impeller rotatable about an axis extending in a lateral direction and having a space formed therein for introducing air sucked through the side; And
And a scroll housing having a housing space formed therein for housing the impeller and having a first suction hole and a second suction hole formed on a side thereof to form a passage through which external air is sucked into the space,
The scroll housing includes:
A first side plate disposed at one side of the scroll housing, the first side plate having the first suction hole formed therein;
A second side plate disposed on the other side of the scroll housing and having the second suction hole formed therein;
A scroll provided between the first side plate and the second side plate, the accommodation space being formed in the inside and the inner circumferential surface being formed as a curved surface surrounding the outer circumferential surface of the impeller;
A connecting plate disposed between the first side plate and the second side plate and surrounding the circumferential outer side of the scroll and connecting the first side plate and the second side plate;
A discharge portion formed in the front of the scroll and the connection plate to form a passage through which the air sucked into the accommodation space is discharged; And
And a cut-off portion formed at an interface between the connection plate and the discharge portion,
Wherein the cut-off portion is formed in a shape in which a central portion in the width direction is recessed in a downward direction with respect to both sides in the width direction,
Wherein a width in the width direction of the cut-off portion and a width in the widthwise direction of the cut-off portion are equal to each other.
The method according to claim 1,
And a hub installed in the impeller and partitioning the space laterally,
Wherein the cut-off portion is formed in a concave shape in a downward direction as the position of the cut-off portion in the width direction is adjacent to the hub.
The method according to claim 1,
Wherein the cut-off portion is formed in a "V" shape in which the central portion in the width direction forms the lowest surface.
The method according to claim 1,
Wherein the cut-off portion includes a spline shape in which a central portion in the width direction forms the lowest surface.
5. The method of claim 4,
Wherein the cutoff portion includes a curved surface formed by connecting curved surfaces formed with a curvature corresponding to a change rate of the amount of air passing through the angular position of the cutoff portion in the width direction of the cutoff portion along the width direction of the cutoff portion And the air blowing device is formed into a shape.
The method according to claim 1,
Wherein the front surface of the connecting plate on which the cut-off portion is formed is formed in a concave shape with a widthwise center portion being rearward as compared with both widthwise sides.
The method according to claim 6,
Wherein the front surface of the connecting plate on which the cut-off portion is formed is formed in such a shape that the portions along the width direction of the cut-off portion are spaced equally from the inner circumferential surface of the scroll in the front-rear direction.
An impeller rotatable about an axis extending in a lateral direction and having a space formed therein for introducing air sucked through the side; And
And a scroll housing having a housing space formed therein for housing the impeller and having a first suction hole and a second suction hole formed on a side thereof to form a passage through which external air is sucked into the space,
The scroll housing includes:
A first side plate disposed at one side of the scroll housing, the first side plate having the first suction hole formed therein;
A second side plate disposed on the other side of the scroll housing and having the second suction hole formed therein;
A scroll provided between the first side plate and the second side plate, the accommodation space being formed in the inside and the inner circumferential surface being formed as a curved surface surrounding the outer circumferential surface of the impeller; And
And a through passage formed to penetrate through the scroll housing and open between one side of the side of the scroll housing and the other side of the side of the scroll housing.
9. The method of claim 8,
Wherein the through-passage portion is formed through a portion of the first side plate and the second side plate.
10. The method of claim 9,
And a connecting plate disposed between the first side plate and the second side plate and surrounding the circumferential outer side of the scroll and connecting the first side plate and the second side plate,
And the through-passage portion is disposed between the scroll and the connecting plate.
11. The method of claim 10,
Wherein the through-passage portion is disposed at a position of at least one of a rear upper side, a rear lower side, and a front lower side of the scroll housing.
An impeller rotatable about an axis extending in a lateral direction and having a space formed therein for introducing air sucked through the side; And
And a scroll housing having a housing space formed therein for housing the impeller and having a first suction hole and a second suction hole formed on a side thereof to form a passage through which external air is sucked into the space,
The scroll housing includes:
A first side plate disposed at one side of the scroll housing, the first side plate having the first suction hole formed therein;
A second side plate disposed on the other side of the scroll housing and having the second suction hole formed therein;
And a scroll disposed between the first side plate and the second side plate and having a receiving space formed therein and having an inner circumferential surface formed as a curved surface surrounding the outer circumferential surface of the impeller,
At least one of a connecting portion between the inner circumferential surface of the scroll and the first side plate and a connecting portion between the inner circumferential surface of the scroll and the second side plate is provided with at least one of an inner circumferential surface of the scroll and the inner circumferential surface of the scroll, Wherein a curved surface connecting portion is formed in a curved surface.
13. The method of claim 12,
Wherein the curved connecting portion forms a curved surface having an R value of 3 to 5 mm.
13. A blowing apparatus according to any one of claims 1 to 13,
A first suction body disposed at one side of the air blowing device and having a first air suction part; And
And a second suction body disposed on the other side of the air blowing device and having a second air suction part,
Wherein the air blowing device is disposed between the first suction body and the second suction body and sucks the air introduced through the first air suction part and the second air suction part and discharges the air in a forward direction.

Images