KR101558577B1 - Indoor unit of air conditioner - Google Patents

Abstract

The present embodiment relates to an indoor unit of an air conditioner.

The indoor unit of the air conditioner includes a cabinet; A fan assembly provided inside the cabinet for forcedly flowing air; A filter positioned upstream of the fan assembly to purify air; A front panel having a suction port for sucking air into the cabinet; A suction panel for selectively opening and closing the suction port; And a noise reduction unit positioned between the suction panel and the filter and guiding the indoor air toward the suction port to reduce noise.

Indoor unit

Description

[0001] The present invention relates to an indoor unit of an air conditioner,

The present embodiment relates to an indoor unit of an air conditioner.

Background Art [0002] Generally, an air conditioner is a device for heating or cooling air using a refrigerant cycle, and is roughly divided into a domestic air conditioner and an industrial air conditioner.

In detail, the domestic air conditioner can be divided into a separate type air conditioner divided into an indoor unit and an outdoor unit, and an integral type air conditioner in which an indoor unit and an outdoor unit are integrally formed.

The indoor unit of the separate type air conditioner can be divided into a wall-mounted type mounted on the wall, a standing type installed on the floor, and a ceiling type (or cassette type) indoor unit attached to the ceiling.

In such an indoor unit, noise may be generated due to operation of various components provided therein and air flow. Therefore, efforts have been made to reduce the noise generated in the indoor unit.

It is an object of the present invention to provide an indoor unit of an air conditioner that minimizes noise generated during the inhalation of air.

The indoor unit of the air conditioner according to one aspect includes a cabinet; A fan assembly provided inside the cabinet for forcedly flowing air; A filter positioned upstream of the fan assembly to purify air; A front panel having a suction port for sucking air into the cabinet; A suction panel for selectively opening and closing the suction port; And a noise reduction unit positioned between the suction panel and the filter and guiding the indoor air toward the suction port to reduce noise.

The indoor unit of the air conditioner according to another aspect includes a cabinet; A fan assembly provided inside the cabinet for forcedly flowing air; A front panel having a suction port for sucking air into the cabinet; A suction panel movably provided with respect to the front panel, the suction panel selectively opening and closing the suction port; And a plurality of guide portions guiding the flow of room air toward the suction port side and performing relative movement by the movement of the suction panel.

According to the proposed embodiment, since the room air flows along the side surface of the noise reduction unit and the flow direction changes and passes through the intake port, the occurrence of turbulence can be minimized.

Further, as turbulence generation is minimized, the flow rate of air can be increased and air flow noise can be reduced.

In addition, since a plurality of guide sections constituting the noise reduction section are provided so as to be relatively movable, the overall height of the noise reduction section is maximized in a state where the suction panel opens the suction port, and the air flow path guided by the noise reduction section So that the first guide portion can be prevented from interfering with the filter while the suction panel is closed.

Hereinafter, embodiments will be described in detail with reference to the drawings.

2 and 3 are vertical cross-sectional views schematically showing an internal configuration of the indoor unit. In FIG. 2, the state in which the suction port of the indoor unit is opened And Fig. 3 shows a state in which the suction panel closes the suction port.

1 shows a ceiling-type air conditioner as one type of the air conditioner.

1 to 3, the indoor unit 10 of the air conditioner according to the present embodiment includes a cabinet 11 having an outer appearance and opening downward, and a front panel (not shown) coupled to the lower side of the cabinet 11 A suction panel 13 coupled to the front panel 12 so as to be able to ascend and descend; a heat exchanger 17 provided inside the cabinet 11; A shroud 16 provided at an upstream side of the fan assembly 14 on the basis of the flow of air to guide a flow of air to be sucked, And a filter 15 for purifying air to be sucked.

In detail, a plurality of discharge ports 122 are formed at edge portions of the front panel 12. A discharge vane 123 is rotatably provided on the front panel 12.

Accordingly, the direction of the discharged air is adjusted according to the rotation angle of the discharge vane 123.

A suction port 121 for sucking indoor air is formed at a central portion of the front panel 12 and the suction port 121 is selectively shielded by the suction panel 13. That is, when the indoor unit 10 is turned on, the suction panel 13 opens the suction port 121, and when the indoor unit 10 is turned off, the suction panel 13 closes the suction port 121 .

An orifice 124 for guiding an air flow is formed around the suction port 121 and the filter 15 is installed on the upper side of the orifice 124. The orifice 124 extends roundly from the front panel 12 toward the fan assembly 14.

A rack 18 is provided on the upper side of the suction panel 13 and a pinion (not shown) coupled to the rack 18 is provided on the upper side of the front panel 12 and a driving motor (Not shown) may be provided.

Accordingly, the suction panel 13 moves in the vertical direction by the operation of the driving motor, and the suction port 121 is selectively opened and closed by the movement of the suction panel 13. Since the suction panel 13 covers the suction port 121 at a position spaced apart from the suction port 121 in a state where the suction panel 13 moves downward to open the suction port 121, Exposure of the suction port 121 is minimized by the suction panel 13.

It is to be noted that the lifting means of the suction panel 13 in the present embodiment is not limited to the rack / pinion structure shown above.

The air sucked through the suction port 121 flows through the filter 15 to the fan assembly 14 after the foreign matter is filtered. In detail, the fan assembly 14 includes a centrifugal fan 142 in an axial suction / radial direction and a fan motor 141 for driving the centrifugal fan 142. The air flowing through the fan assembly 14 passes through the heat exchanger 17 and then is discharged to the room through the discharge port 122.

The suction panel 13 and the filter 15 are provided with a noise reduction unit 19 for reducing noise by guiding the flow of air to be sucked into the cabinet 11.

The noise reduction unit 19 includes a first guide unit 191 coupled to the suction panel 13 and a second guide unit 191 that is relatively movable with respect to the first guide unit 191, The second guide portion 195 is provided.

The first guide portion 191 may have a trapezoidal shape in vertical cross section. That is, the first guide part 191 may be formed in a truncated cone or polygonal prism shape having a hollow shape. However, in this embodiment, the shape of the first guide portion 191 is not limited.

Therefore, the side surface 192 of the first guide portion 191 is inclined toward the center toward the upper side from the lower side of the first guide portion 191. At this time, the angle formed by the upper surface of the suction panel 13 (the surface facing the suction port) and the side surface 192 of the first guide portion 191 may be defined as? 1.

The first guide portion 191 may be fastened to the upper surface of the suction panel 13 by a fastening member 198 such as a screw. However, in this embodiment, there is no limitation on the coupling method of the first guide portion 191 and the suction panel 13. [

Meanwhile, the second guide part 195 may have a trapezoidal shape in vertical section. That is, the second guide part 195 may be formed in a truncated cone shape or a polygonal prism shape. However, it should be noted that the shape of the second guide portion 195 is not limited in the present embodiment.

Therefore, the side surface 196 of the second guide portion 195 is inclined toward the center toward the upper side from the lower side of the second guide portion 195. At this time, the angle formed by the upper surface of the suction panel 13 (the surface facing the suction port) and the side surface 196 of the second guide portion 195 may be? 2.

At least a part of the second guide part 195 is positioned in a space 193 formed inside the first guide part 191. The angle? 2 is larger than? 1. The length of the bottom surface of the second guide part 195 is larger than the length of the opening of the space 193 of the first guide part 191.

Since the side surface 196 of the second guide part 195 is caught by the first guide part 191 when the suction panel 13 is completely lowered, The portion 195 is prevented from being released.

Therefore, there is an advantage that a separate coupling means for coupling the first guide portion 191 and the second guide portion 195 is unnecessary.

The second guide part 195 is formed with a coupling part 197 to be coupled to the filter 15. The coupling part 197 may be a hook, for example. It is noted that there is no limitation in the method of coupling the second guide portion 195 and the filter 15 in this embodiment.

In this embodiment, the side surface 192 of the first guide portion 191 and the side surface 196 of the second guide portion 195 are surfaces for guiding the flow of air, so they can be referred to as guide surfaces.

The operation of the noise reduction unit will be described.

When the ON signal of the indoor unit 10 is inputted, the suction panel 13 is lowered by the driving motor, and the centrifugal fan 142 is rotated.

When the suction panel 13 is lowered, the first guide part 191 is lowered together with the suction panel 13 while the second guide part 195 is fixed to the filter 15 . That is, the first guide part 191 and the second guide part 195 move relative to each other. As the first guide portion 191 descends, the total height of the noise reduction portion 19 increases.

When the suction panel 13 is lowered, a space S is formed between the upper surface of the suction panel 13 and the lower surface of the front panel 12, do. The air flowing in the space S is sucked into the cabinet 11 through the suction port 121 in a state where the flow direction is changed.

At this time, since the upper surface of the suction panel 13 and the bottom surface of the front panel 12 are substantially horizontal, the room air flows in the space S in a substantially horizontal direction.

If the noise reduction unit is not provided, the air flowing in the space S changes in the flow direction in a state where the air is collected at the central portion of the suction panel 13, . When the turbulence is generated in this way, the suction of the air is not smooth and the flow noise of the air is generated.

However, when the noise reduction unit 19 is provided between the suction panel 13 and the filter 15 as in the present embodiment, the air that has flowed through the space S flows into the side of the noise reduction unit 19 The flow direction changes and passes through the suction port 121, so that the occurrence of turbulence is minimized. And, as the turbulence generation is minimized, the flow rate of the air can be increased and the air flow noise can be reduced.

That is, since the noise reducing unit 19 minimizes the gathering of the air that has flowed in the space S from the upper side of the upper surface of the suction panel 13, turbulence formation at the center side of the suction panel 13 is minimized It can be.

Since the second guide portion 195 is substantially fixed to the filter 15, the air is not collected until the air flows to the upper end of the second guide portion 195.

On the other hand, when the off signal of the indoor unit 10 is inputted, the suction panel 13 is raised by the driving motor. When the suction panel 13 is lifted up, the first guide part 191 is lifted along the outer side of the second guide part 195 and positioned inside the orifice 124.

The volume of the second guide part 195 introduced into the space 193 of the first guide part 191 is increased and the first guide part 191 and the filter 15 are interfered .

That is, since the first guide part 191 and the second guide part 195 can be relatively moved, the suction panel 13 can move the noise reduction part 19 in a state in which the suction port 121 is opened, So that the first guide part 191 can be prevented from interfering with the filter 15 in a state where the suction panel 13 closes the suction port 121. [

The increase in the total height of the noise reduction unit 19 means that the distance of the air flowing along the side of the noise reduction unit 19 is increased. Therefore, the total height of the noise reduction unit 19 is increased The more turbulent generation can be reduced.

The first guide portion 191 may be coupled to the suction panel 13 while the first guide portion 191 may be integrally formed with the suction panel 13 Do. However, in this case,? 1 and? 2 may be formed to be the same for inserting the second guide portion 195 into the space 193 of the first guide portion 191.

4 is a vertical cross-sectional view schematically showing the internal structure of the air conditioner indoor unit according to the second embodiment.

The present embodiment is the same as the first embodiment in other portions, but is different in the engagement position of the second guide portions. Therefore, only the characteristic parts of the present embodiment will be described below.

4, the noise reduction unit 29 according to the present embodiment includes a first guide portion 291 coupled to the suction panel 13, a second guide portion 291 coupled to the front panel 12, (295).

An orifice 124 for guiding the flow of air is formed in the front panel 12 and a support 125 for supporting the second guide part 295 is formed at an end of the orifice 124 . The support portion 125 may be formed in a lattice shape, for example. The filter 15 may be seated on the support part 125.

The second guide portion 295 is formed with a coupling portion 296 for coupling with the support portion 125. The engaging portion 296 is formed with a coupling protrusion 297. The supporting portion 15 is formed with an insertion portion 126 for insertion of the coupling protrusion 297. [

According to the present embodiment, since the second guide portion 295 is coupled to the support portion 125 and the filter 15 can be seated on the support portion 125, the sag of the filter 15 Can be prevented.

The second guide portion 295 may be formed integrally with the front panel 12 while the second guide portion 295 is coupled to the front panel 12 in the present embodiment Do. However, in this case, in order to insert the second guide portion into the space of the first guide portion,? 1 and? 2 described in the first embodiment may be formed to be the same.

Meanwhile, in the above-described embodiment, it is described that the noise reduction portion is composed of two guide portions. Alternatively, the noise reduction portion may be constituted by three or more guide portions and relatively movable.

1 is an external perspective view of an indoor unit of an air conditioner according to a first embodiment;

2 and 3 are vertical cross-sectional views schematically showing the internal structure of the indoor unit. FIG. 2 shows a state in which the suction panel opens the suction port, and FIG. 3 shows the suction panel in which the suction port is closed.

4 is a vertical sectional view schematically showing an internal configuration of an air conditioner indoor unit according to a second embodiment.

Claims (10)

cabinet; A fan assembly provided inside the cabinet for forcedly flowing air; A filter positioned upstream of the fan assembly to purify air; A front panel having a suction port for sucking air into the cabinet; A suction panel for selectively opening and closing the suction port; And A noise reduction unit positioned between the suction panel and the filter and guiding the indoor air toward the suction port to reduce noise, In the noise reduction unit, A first guide part fixed to the suction panel, And a second guide portion that is relatively movable with respect to the first guide portion. The method according to claim 1, Wherein the suction panel is movable relative to the front panel, The indoor air flows between the suction panel and the front panel while the suction panel opens the suction port, Wherein the noise reducing unit changes a direction of flow of room air flowing between the suction panel and the front panel. delete The method according to claim 1, And the second guide portion is coupled to the filter. The method according to claim 1, And the second guide portion is coupled to the front panel. The method according to claim 1, Wherein each of the guide portions includes a guide surface for guiding air flow, Wherein the guide surface is inclined with one surface of the suction panel facing the suction port. cabinet; A fan assembly provided inside the cabinet for forcedly flowing air; A front panel having a suction port for sucking air into the cabinet; A suction panel movably provided with respect to the front panel, the suction panel selectively opening and closing the suction port; And And a plurality of guide portions guiding the flow of room air toward the suction port side and performing relative movement by movement of the suction panel. 8. The method of claim 7, Wherein one of the plurality of guide portions is coupled to or integrally formed with the suction panel. 9. The method of claim 8, And a filter for filtering the air sucked through the suction port, And the other of the plurality of guide portions is coupled to the front panel or the filter. 8. The method of claim 7, Wherein each of the guide portions includes a guide surface for guiding air flow, Wherein the guide surface is inclined with one surface of the suction panel facing the suction port.

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