KR101712274B1 - Indoor unit for an air conditioner - Google Patents

Indoor unit for an air conditioner Download PDF

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Publication number
KR101712274B1
KR101712274B1 KR1020150097336A KR20150097336A KR101712274B1 KR 101712274 B1 KR101712274 B1 KR 101712274B1 KR 1020150097336 A KR1020150097336 A KR 1020150097336A KR 20150097336 A KR20150097336 A KR 20150097336A KR 101712274 B1 KR101712274 B1 KR 101712274B1
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KR
South Korea
Prior art keywords
discharge
blowing fan
variable vane
main body
air
Prior art date
Application number
KR1020150097336A
Other languages
Korean (ko)
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KR20170006548A (en
Inventor
최성식
서기원
손민수
Original Assignee
엘지전자 주식회사
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Priority to KR1020150097336A priority Critical patent/KR101712274B1/en
Publication of KR20170006548A publication Critical patent/KR20170006548A/en
Application granted granted Critical
Publication of KR101712274B1 publication Critical patent/KR101712274B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

The present invention relates to an indoor unit of an air conditioner.
The indoor unit of the air conditioner according to the embodiment of the present invention includes a case; A suction unit formed at a rear portion of the case and sucking air; A heat exchanger for exchanging heat between the suctioned air and the suctioned air; And a discharge device for discharging the heat-exchanged air in the heat exchanger to an indoor space, wherein the discharge device includes a discharge main body rotatably installed; A blowing fan provided inside the discharge main body and generating a blowing force; A variable vane which is movably provided in a discharge passage of the blowing fan and increases or decreases a size of the discharge passage; And a pressing device which is installed at one side of the discharge main body and selectively presses the variable vane.

Description

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

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

The air conditioner is a device for keeping the air in a predetermined space in a most suitable condition according to the purpose of use and purpose. Generally, the air conditioner includes a compressor, a condenser, an expansion device, and an evaporator, and a refrigeration cycle for compressing, condensing, expanding, and evaporating the refrigerant is driven to cool or heat the predetermined space .

The predetermined space may be variously proposed depending on the place where the air conditioner is used. For example, when the air conditioner is installed in a home or an office, the predetermined space may be a house or an indoor space of a building. On the other hand, when the air conditioner is disposed in a car, the predetermined space may be a boarding space on which a person boarded.

The air conditioner includes an outdoor unit installed outdoors and an indoor unit installed in the predetermined space. For example, the outdoor unit includes a compressor, an outdoor heat exchanger, and an outdoor ventilation fan, and the indoor unit includes an indoor heat exchanger and an indoor ventilation fan.

When the air conditioner performs cooling operation, the outdoor heat exchanger and the indoor heat exchanger may function as a condenser and an evaporator, respectively. On the other hand, when the air conditioner performs the heating operation, the outdoor heat exchanger and the indoor heat exchanger may function as an evaporator and a condenser, respectively.

The indoor unit further includes a discharge device for guiding the discharge of heat-exchanged air into the predetermined space. For example, the discharge device may be rotatably provided, so that the discharge direction of the air may be variously formed toward a plurality of points of the predetermined space.

The related art documents related thereto are as follows.

1. Public number (public date): 10-2009-0017289 (February 18, 2009)

2. Title of the invention: indoor unit of air conditioner

According to this conventional technique, the phenomenon that the pressure or the air velocity of the air fluctuates, that is, the surging occurs due to the difference between the suction volume of the air sucked into the blowing fan and the discharge volume of the air discharged from the blowing fan, And the performance of the air conditioner is deteriorated due to a decrease in the amount of air.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an indoor unit of an air conditioner capable of reducing noise and improving performance by preventing occurrence of surging.

The indoor unit of the air conditioner according to the embodiment of the present invention includes a case; A suction unit formed at a rear portion of the case and sucking air; A heat exchanger for exchanging heat between the suctioned air and the suctioned air; And a discharge device for discharging the heat-exchanged air in the heat exchanger to an indoor space, wherein the discharge device includes a discharge main body rotatably installed; A blowing fan provided inside the discharge main body and generating a blowing force; A variable vane which is movably provided in a discharge passage of the blowing fan and increases or decreases a size of the discharge passage; And a pressing device which is installed at one side of the discharge main body and selectively presses the variable vane.

The discharge main body includes a rear guide spaced apart from the outer circumferential surface of the blowing fan by a predetermined distance and surrounding the outer circumferential surface of the blowing fan.

Further, the variable vane is provided in the rear guide.

One side of the variable vane is coupled to the rear guide, and the other side of the variable vane is rotatable about the one side.

Further, the variable vane is formed integrally with the rear guide.

The discharge main body further includes an elastic member coupled to the variable vane and providing a restoring force to the variable vane.

In addition, the elastic member includes a compression spring.

Further, the pressing device is provided in a supporter for supporting one side of the discharging device.

The pressing device may further include: a pressing body placed on the upper surface of the supporter; And a pressing portion provided on the pressing body to selectively press the variable vane.

The variable vane includes a contact portion protruding from one surface of the variable vane toward the discharge passage and being pushed by the pressing portion.

Further, the outer peripheral surface of at least one of the pressing portion and the contacting portion has a cam shape.

The above-described ejection apparatus includes first and second ejection apparatuses arranged in a lateral direction in front of the case.

The blowing fan includes a cross flow fan for sucking air in a circumferential direction and discharging the air in the direction of the outer circumference.

The indoor unit of the air conditioner according to another aspect includes: a case; A suction unit formed at a rear portion of the case and sucking air; A heat exchanger for exchanging heat between the suctioned air and the suctioned air; A blowing fan provided at an outlet side of the heat exchanger; A discharge main body rotatably disposed to surround at least a part of the blowing fan and having a discharge portion for discharging air; A first vane provided in the discharge portion and guiding the discharge of air; A second vane movably disposed on one side of the discharge main body; And a pushing device capable of pressing the second vane when the discharge body rotates.

In addition, the first vane is fixed to the discharge portion, and the second vane performs a relative movement with respect to the discharge main body.

The second vane moves in a direction that can increase or decrease the size of the discharge passage of the blowing fan.

In addition, an elastic member is provided to provide a restoring force to move the second vane toward the discharge passage.

Further, the elastic member is provided between one surface of the discharge main body and the second vane.

According to the indoor unit of the air conditioner of the present invention, since the variable vane capable of moving in the rotatable discharge body is provided, the discharge volume can be varied corresponding to the suction volume of the blower to be changed, It is possible to prevent a surging phenomenon that can be generated by the heat sink.

In addition, since the surging phenomenon occurs, noise generated in the indoor unit is reduced, and the amount of air discharged from the indoor unit is increased, so that the performance of the indoor unit can be improved.

The pressing device may further include a pressing device that is capable of pressing the variable vane when the discharge main body reaches a set rotational position, that is, a position where the suction volume increases, There is an effect that the discharge volume can be effectively varied corresponding to the suction volume.

In detail, in the process of rotating the discharge main body, when the suction volume increases, the pushing device presses the variable vane to increase the discharge volume. When the suction volume becomes small, the pushing device is separated from the variable vane The discharge volume can be reduced.

As a result, when the suction volume is formed small, the variable vane can be moved so as to reduce the discharge volume, so that the surging phenomenon can be prevented. Further, when the suction volume is large, the variable vane can increase the discharge volume, so that the discharge air volume can be increased and the performance of the air conditioner can be improved.

Also, since the variable vane is integrally provided in the rear guide of the discharge main body, and the spring is provided between the variable vane and the rear guide, repetitive movement of the variable vane can be facilitated.

1 is a front view showing the configuration of an indoor unit of an air conditioner according to an embodiment of the present invention.
2 is a cross-sectional view taken along line I-I 'of FIG.
3 is a cross-sectional view taken along line II-II 'of FIG.
4 is a cross-sectional view taken along line III-III 'of FIG.
5 is a sectional view showing a part of an indoor unit of an air conditioner according to an embodiment of the present invention.
FIG. 6 is a view showing a variable vane and a pressing device in a state in which the discharge main body according to the embodiment of the present invention is rotated to a single position.
7 is a view showing a state of a variable vane and a pressing device in a state in which the discharge main body according to the embodiment of the present invention is rotated to another position.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

1 is a cross-sectional view taken along the line I-I 'of FIG. 1, and FIG. 3 is a cross-sectional view taken along the line II-II' of FIG. 1 FIG.

1 to 3, an indoor unit 10 of an air conditioner according to an embodiment of the present invention includes a case 20 forming an outer appearance. The case 20 includes a base 21 provided at a lower portion thereof and a front panel 23, a side panel 25 and a rear panel 27 provided on the base 21.

The front panel 23 is disposed at a front lower portion of the indoor unit 10. The side panels 25 form both side portions of the indoor unit 10 and the rear panel 27 forms a rear portion of the indoor unit 10.

The indoor unit (10) includes a discharge unit (110, 150) for discharging the heat-exchanged air in the indoor unit (10) to the indoor space. The ejecting apparatuses 110 and 150 may be installed at a front upper portion of the case 20, that is, at an upper side of the front panel 23.

The discharging apparatuses 110 and 150 may be provided movably. For example, the discharging apparatuses 110 and 150 may rotate in the lateral direction, that is, clockwise or counterclockwise, with respect to the front surface of the indoor unit 10. [

In detail, the discharging devices 110 and 150 include a first discharging device 110 and a second discharging device 150 which can be driven independently of each other. For example, both of the first and second discharging devices 110 and 150 may be rotated clockwise or counterclockwise. Alternatively, one of the first and second discharging devices 110 and 150 may be rotated clockwise One can rotate counterclockwise.

The first and second discharging devices 110 and 150 may be disposed in parallel to the left and right front sides of the indoor unit.

The first discharging device 110 includes a first discharging main body 111 forming a first discharging flow path 115 and a first discharging portion 111 formed on the front surface of the first discharging main body 111 for discharging air 112). The first discharge portion 112 may extend in the longitudinal direction from the upper portion of the first discharge body 111 to the lower portion thereof. The first discharge portion 112 is provided with a first discharge vane 114.

The first ejection body 111 has a substantially cylindrical shape with an empty interior, and the upper and lower portions may be formed to be open. The cylindrical rear portion is formed with an inlet portion through which air having passed through the heat exchanger 80 flows toward the air blowing fan 130. The cylindrical front portion has a first discharge portion 112, .

The first discharge passage 115 is a space formed inside the first discharge body 111 and can be understood as a passage through which the heat-exchanged air in the heat exchanger 80 flows.

The first ejection apparatus 110 includes a lower plate 121 for blocking the lower portion of the first ejection main body 111 and an upper plate 125 for covering the upper portion. For example, the lower plate 121 and the upper plate 125 may be integrally formed with the first discharge body 111, or may be configured to be coupled by a predetermined fastening member.

The indoor unit 10 includes a first supporter 250 for supporting a lower portion of the first ejection apparatus 110 and a second supporter 260 for supporting an upper portion of the first ejection apparatus 110. The first supporter 250 may be configured to support the lower side of the lower plate 121 and the second supporter 260 may be configured to support the upper side of the upper plate 125.

The upper plate 125 is provided with a protrusion 126 for providing the center of rotation of the first discharging device 110. The protrusion 126 protrudes upward from the upper plate 125 and can be rotatably supported by the second supporter 260. A groove may be formed in the second supporter 260 to receive the protrusion 126.

The indoor unit 10 includes driving devices 140 and 145 for rotating the first discharging device 110. The driving devices 140 and 145 include a driving motor 140 that generates a driving force and a driving gear 145 that is coupled to the driving motor 140 and rotates.

The driving gear 145 can rotate the discharge main body 111. In detail, a driven gear 123 interlocking with the driving gear 145 may be formed on the discharge main body 111 or the lower plate 121. In FIG. 2, for example, a driven gear 123 is illustrated as being formed on the lower plate 121.

Specifically, the lower plate 121 includes a motor receiving portion 122 for receiving the fan motor 135. The motor receiving portion 122 may be integrally formed with the lower plate 121 or may be configured as a separate member from the lower plate 121 and be coupled to the lower plate 121. For example, the driven gear 123 may be formed on the outer circumferential surface of the motor receiving portion 122.

The driving force of the driving motor 140 is transmitted to the lower plate 121 and the discharging main body 111 through the driving gear 145 and the driven gear 123. The discharging main body 111 is connected to the protruding portion 126, As shown in FIG.

The indoor unit 10 includes a first blowing fan 130 for generating an air flow and a fan motor 135 for driving the first blowing fan 130.

The first blowing fan 130 is rotatably installed in the first discharge body 111. In detail, the upper portion of the first blowing fan 130 includes a supporting portion 132 rotatably coupled to the upper plate 125. The upper plate 125 may include a groove or a hole to which the support portion 132 is coupled. The first blowing fan 130 can be rotated about the support portion 132. [ That is, the support part 132 constitutes the rotation center of the first blowing fan 130.

The fan motor 135 may be coupled to the lower side of the first blowing fan 130. In detail, the motor shaft 136 may extend to the upper side of the fan motor 135 and may be coupled to the lower portion of the first blowing fan 130. The fan motor 135 may be installed in the motor receiving portion 122 and supported by the first supporter 250.

In summary, the first blowing fan 130 and the fan motor 135, that is, the fan motor assembly may extend in the longitudinal direction from the lower plate 121 of the first discharge device to the upper plate 125. The first blowing fan 130 may be installed at a height corresponding to the first discharging unit 112. That is, the air flow path discharged from the suction portion 31 to the first discharge portion 112 via the first blowing fan 130 forms a straight flow path from the rear upper portion to the front upper portion of the case 20 .

In the course of the rotation of the first discharge body 111, the first blowing fan 130 can rotate with a predetermined turning radius.

4) of the first blowing fan 130 and the second rotation center C1 (see FIG. 4) of the first discharge main body 111 are spaced apart or eccentric. Accordingly, when the first discharge main body 111 rotates about the second rotation center C1, the first blowing fan 130 rotates about the first rotation center R1 and the second rotation center C1 Can be rotated with a turning radius. At this time, the fan motor 135 may rotate together with the first blowing fan 130. The first rotation center R1 is formed at a position corresponding to the support portion 132 and the second rotation center C1 is formed at a position corresponding to the protrusion 126. [

Of course, it is needless to say that the first blowing fan 130 rotates by the fan motor 135 to generate an air flow. That is, the first blowing fan 130 can simultaneously perform the rotation and the revolving motion. For example, in a state in which the first discharge body 111 is rotated such that the first discharge portion 112 is opened, the first blowing fan 130 operates to discharge air.

The indoor unit 10 is provided with a suction unit 31 formed at a rear portion of the indoor unit 10 to suck air therein. For example, the suction portion 31 may be formed on the upper portion of the rear panel 27. The suction unit 31 may be provided with a suction grille 32.

The indoor unit 10 further includes a filter unit 70 disposed inside the suction unit 31 to clean the air sucked through the suction unit 31. The filter device 70 may include a plurality of filter members 71 and 73 (see Fig. 4).

The indoor unit 10 further includes a heat exchanger 80 disposed in front of the filter unit 70 to heat-exchange the air. A drain portion 86 for storing condensed water generated in the heat exchanger 80 may be installed below the heat exchanger 80. A partitioning unit 190 for partitioning the first and second discharge units 110 and 150 is installed in front of the heat exchanger 80.

The filter unit 70 is installed between the suction unit 31 and the heat exchanger 80 and the heat exchanger 80 is disposed between the filter unit 70 and the partition unit 190 Can be understood as being installed.

The first blowing fan 130 may include, for example, a cross flow fan. Accordingly, the air can be sucked in the circumferential direction of the first blowing fan 130 and discharged in the direction of the outer circumference. 2, on the right side of the first blowing fan 130, a size of a flow path through which air is sucked, that is, a suction volume is formed, and on the left side, the size of a flow path through which air is discharged, .

When the first blowing fan 130 is driven, the air sucked through the suction unit 31 passes through the first blowing fan 130 through the filter unit 70 and the heat exchanger 80, And can be discharged from the first discharge portion 112 to the indoor space via the first discharge passage 115. [

The configuration of the second ejection apparatus 150 is similar to that of the first ejection apparatus 110. For example, the fan motor assembly is disposed inside the discharge main body, the rotation center of the blowing fan is eccentric from the rotation center of the discharge main body, and the inlet portion is formed at the rear portion of the cylindrical discharge main body, The configuration to be formed is similar to that of the first ejection apparatus 110 described above. However, there is a difference from the first discharge device in that the fan motor 175 provided in the second discharge device 150 is arranged above the discharge main body 151.

In detail, the second ejection apparatus 150 includes a second ejection main body 151 forming a second ejection flow path 155 and a second ejection body 151 formed on the front surface of the second ejection main body 151, A portion 152 is included. The second discharging portion 152 may extend in the longitudinal direction from the upper portion of the second discharging body 151 to the lower portion thereof. A first discharge vane 154 is provided in the second discharge portion 152.

The second ejection apparatus 150 includes a lower plate 161 coupled to an opened lower portion of the second ejection body 151 and an upper plate 165 coupled to an upper opened portion of the second ejection body 151 . For example, the lower plate 161 and the upper plate 165 may be integrally formed with the second discharge body 151, or may be configured to be coupled by a predetermined fastening member.

A second blowing fan 170 may be rotatably installed inside the second discharge main body 151. A fan motor 175 for providing a driving force to the second blowing fan 170 is installed above the second blowing fan 170. The upper plate 165 includes a motor receiving portion 165a for receiving the fan motor 175. [

The lower plate 161 is provided with a protrusion 166 for providing the center of rotation of the second discharging device 150. The protrusion 166 protrudes downward from the lower plate 161 and can be rotatably supported by the first supporter 250. The first supporter 250 may be formed with a groove for receiving the protrusion 166.

The indoor unit 10 includes driving devices 180 and 185 for rotating the second discharging device 150. The driving devices 180 and 185 include a driving motor 180 that generates a driving force and a driving gear 185 that is coupled to the driving motor 180 and rotates.

The driving gear 185 may rotate the second discharge main body 151. In detail, the second discharge main body 151 or the lower plate 161 may be provided with a driven gear 163 interlocked with the driving gear 185. For example, in FIG. 3, a driven gear 163 is shown as being formed in the lower plate 161.

The driving force of the driving motor 180 is transmitted to the second ejection body 151 and the lower plate 161 through the driving gear 185 and the driven gear 163, And can be rotated around the projection 166. [

The lower portion of the second blowing fan 170 includes a support 172 rotatably coupled to the lower plate 161. The lower plate 161 may include a groove or a hole to which the support portion 172 is coupled. The second blowing fan 170 can be rotated about the support portion 172. [ That is, the support portion 172 forms the center of rotation of the second blowing fan 170.

In summary, the second blowing fan 170 and the fan motor 175, that is, the fan motor assembly, may extend in the longitudinal direction from the upper plate 165 to the lower plate 161 of the second discharge device. The second blowing fan 170 may be installed at a height corresponding to the second discharging unit 152. That is, the air flow path discharged from the suction portion 31 to the second discharge portion 152 via the second blowing fan 170 forms a straight flow path from the rear upper portion of the case 20 toward the front upper portion can do.

In the course of the rotation of the second discharge main body 151, the second blowing fan 170 can rotate with a predetermined turning radius. 4) of the second blowing fan 170 and the second rotation center C2 (see FIG. 4) of the second discharge main body 151 are eccentric. Therefore, when the second discharge main body 151 rotates about the second rotation center C2, the second blowing fan 170 rotates about the first rotation center R2 and the second rotation center C2 Can be rotated with a turning radius. The first rotation center R2 is formed at a position corresponding to the support portion 172 and the second rotation center C2 is formed at a position corresponding to the protrusion 166. [

The description of the suction unit 31, the filter unit 70, the heat exchanger 80, and the partition unit 190 is based on the description of the first discharge unit 110.

The indoor unit 10 further includes a partitioning unit 190 partitioning the first and second discharge units 110 and 150 to the left and right. The partitioning device 190 includes a first partition 191 provided on the front of the indoor unit 10 and a second partition 195 extending rearward from the first partition 191 .

For example, the first partition 191 may include a display unit for displaying operation information of the indoor unit 10. The second compartment 220 may include a wall separating a flow path from the heat exchanger 80 to the first and second discharging devices 110 and 150.

FIG. 4 is a cross-sectional view taken along line III-III 'of FIG. 1, and FIG. 5 is a cross-sectional view illustrating a part of an indoor unit of an air conditioner according to an embodiment of the present invention.

Referring to FIGS. 4 and 5, the discharge main bodies 110 and 150 according to the embodiment of the present invention include rear guides 118 and 158 and stabilizers 117 and 157, respectively.

In detail, the first discharge main body 111 includes a rear guide 118 disposed on a suction side of the first blowing fan 130. The rear guide 118 may be coupled to at least one of the lower plate 121 and the upper plate 125. The rear guide 118 guides the intake air to the first blowing fan 130 smoothly when the first blowing fan 130 rotates. The rear guide 118 can prevent the air flowing by the first blowing fan 130 from being separated from the first blowing fan 160.

The first discharge main body 111 further includes a stabilizer 117 disposed on the discharge side of the first blowing fan 130. The stabilizer 117 may be coupled to at least one of the lower plate 121 and the upper plate 125. The stabilizer 117 is installed to be spaced apart from the outer circumferential surface of the first blowing fan 130 to prevent the air discharged from the first blowing fan 130 from flowing back to the heat exchanger 80 side . The rear guide 118 and the stabilizer 117 extend in the longitudinal direction of the first blowing fan 130, that is, the longitudinal direction.

The rear guide 118 and the stabilizer 117 form both side portions of the first discharge body 111 and may be arranged to surround at least a part of the first blowing fan 130.

An air passage passing through the first blowing fan 130 is formed between the rear guide 118 and the stabilizer 117. The air flow path includes a suction flow path formed on one side of the first blowing fan 130 and guiding air sucking into the first blowing fan 130 and a suction flow path formed on the other side of the first blowing fan 130, And a discharge flow path for guiding the air discharge from the first blowing fan 130 are included.

The suction passage is formed between one side of the rear guide 118 and one side of the stabilizer 117. The discharge passage is formed between the other side of the rear guide 118 and the other side of the stabilizer 117.

In the process of rotating the first discharge main body 111 and the first blowing fan 130 with respect to the second rotation center C1, the position of the suction flow path is formed at the position of the suction part 31 And the size of the suction passage, that is, the suction volume, changes correspondingly.

For example, at the positions of the first blowing fan 130 and the first discharge main body 111 as shown in FIG. 4, the suction volume is formed to be relatively small. The first discharging device 110 further rotates in the counterclockwise direction and the suction volume is relatively large at the positions of the first blowing fan 130 and the first discharging main body 111 as shown in FIG.

Then, the first discharging device 110 further rotates counterclockwise, so that the suction volume can be reduced again at the positions of the first blowing fan 130 and the first discharging main body 111 as shown in FIG. 7 have.

In this embodiment, the size of the discharge passage, that is, the discharge volume is changed corresponding to the suction volume which varies in the course of rotation of the first discharge device 110. [

More specifically, the first discharge main body 111 is provided with a variable vane 200 installed on the discharge side of the first blowing fan 130 and guiding the discharge of air passing through the first blowing fan 130 .

The variable vane 200 may be movably provided. A first vane fixed to the discharge units 112 and 152 so that the discharge vanes 114 and 154 are fixed to the discharge unit 112 and 152 and a second vane 200 performing relative movement with respect to the first discharge unit 111, "Can be called.

The variable vane 200 may be provided in the rear guide 118 of the first discharge main body 111. For example, the variable vane 200 may be integrally formed with the rear guide 118.

The rear guide 118 may be disposed to be spaced apart from the outer circumferential surface of the first blowing fan 130 by a predetermined distance and may surround the outer circumferential surface of the first blowing fan 130.

The rear guide 118 includes a first part 118a forming a suction side of the first blowing fan 130 and a second part 118b forming a discharge side of the first blowing fan 130 do. The rear guide 118 may be configured to extend from the first part 118a toward the second part 118b.

The distance between the rear guide 118 and the outer peripheral surface of the first blowing fan 130 may be gradually increased from the first part 118a toward the second part 118b. For example, the shortest distance between the second part 118b and the outer circumferential surface of the first blowing fan 130 is greater than the shortest distance between the first part 118a and the outer circumferential surface of the first blowing fan 130 .

The variable vane 200 may be provided on the second part 118b of the rear guide 118. [

One side of the variable vane 200 may be coupled to the rear guide 118 and the other side may form a free end. Therefore, the variable vane 200 can be configured to rotate the other side about the one side.

An elastic member 210 for providing a restoring force to the variable vane 200 may be installed between the variable vane 200 and one side of the rear guide 118. For example, the elastic member 210 may include a compression spring.

When an external force acts on the variable vane 200, the variable vane 200 moves in the direction of compressing the elastic member 210, and thereby the gap between the rear guide 118 and the variable vane 200 The distance can be reduced.

When the external force is released, the elastic member 210 is tensioned so that the variable vane 200 can move in a direction in which the distance between the rear guide 118 and the variable vane 200 increases have.

The variable vane 200 includes a contact portion 205 to which the external force acts. The contact portion 205 may protrude from one surface of the variable vane 200 toward the inside of the variable vane 200, that is, toward the discharge passage 320.

The indoor unit (10) further includes a pushing device (220) for exerting the external force on the variable vane (200). The pusher 220 may be installed in the first supporter 250.

The pressing device 220 includes a pressing body 221 placed on the upper surface of the first supporter 250 and a contact part 205 of the variable vane 200 provided on the pressing body 221, And a pressing portion 225 for selectively pressurizing the pressurized fluid.

The pressing portion 225 may be disposed at a position spaced from the upper surface of the first supporter 250 by a predetermined distance, that is, at a position corresponding to the abutting portion 205.

In the course of the rotation of the first discharging device 110, the variable vane 200 may be rotated clockwise or counterclockwise together with the rear guide 118. When the variable vane 200 is rotated to a position where the contact portion 205 contacts the pressing portion 225, the pressing device 220 presses the variable vane 200 Reference). When the variable vane 200 is pressurized, the discharge volume increases.

When the variable vane 200 further rotates, the variable vane 200 is separated from the pushing device 200, so that the variable vane 200 is moved to the rear of the rear guide 200 by the restoring force of the elastic member 210, 118) toward the discharge passage. Therefore, the variable vane 200 functions to shield at least a part of the discharge passage, and thus the discharge volume is reduced.

The present embodiment is also characterized in that the size of the discharge passage, that is, the discharge volume is changed corresponding to the suction volume which varies in the course of rotation of the second discharge device 150. [

In detail, the second discharge main body 151 includes a stabilizer 157 and a rear guide 118. [ Explanations of these relate to the description of the stabilizer 117 and the rear guide 118 of the first discharging device 110.

The second discharge main body 151 further includes a variable vane installed on a discharge side of the second blowing fan 170 and guiding the discharge of the air that has passed through the second blowing fan 170. The indoor unit 10 further includes an elastic member for providing a restoring force to the variable vane and a pushing device for selectively pressing the variable vane.

The description of the variable vane, the elastic member, and the pressing device provided in the second discharging device 150 will be described with respect to the first discharging device 110.

FIG. 6 is a view showing a variable vane and a pressing device in a state in which the discharging main body according to the embodiment of the present invention is rotated to a single position. FIG. 7 is a cross-sectional view of the discharging main body according to the embodiment of the present invention, In a state in which the variable vane and the pressing device are in a state of being opened.

The operation of the variable vane and the pressing device according to the embodiment of the present invention will be described with reference to FIG. 4, FIG. 6, and FIG. 6 and 7 show only the variable vane and the pressing device provided in the first discharging device 110, but the description thereof can be applied to the second discharging device 150 as well.

The position of the first discharging device 110 shown in Fig. 4 is called "reference position (first position) ". When the first discharging device 110 is positioned at the reference position, the size of the suction passage 310 sucked into the first blowing fan 130, that is, the suction volume is relatively small.

In the reference position, the variable vane 200 or the contact portion 205 is spaced from the pressing device 220. Therefore, the variable vane 200 moves toward the discharge passage 320 by the elastic member 210, thereby shielding at least a part of the discharge passage 310. As a result, the size of the discharge passage 320 is relatively small. At this time, it is understood that the discharge portion 112 forms a preset discharge angle (first discharge angle). For example, the first ejection angle may be 0 degrees.

In short, as the suction volume becomes smaller, the variable vane 200 operates, and the discharge volume may be formed to be smaller corresponding to the suction volume.

4, when the first discharging device 110 rotates in a counterclockwise direction, the variable vane 200 moves in a direction in which the variable vane 200 approaches the pushing device 220. In this rotation process, the discharge angle of the first discharge portion 112 may increase.

When the first discharging device 110 rotates to reach the position of FIG. 6, the size of the suction path 310 is relatively large. Then, the size of the discharge passage 320 increases corresponding to the size of the increased suction passage 310.

The contact portion 205 of the variable vane 200 contacts the pressing portion 225 of the pressing device 220 when the discharge portion 112 forms a preset discharge angle (second discharge angle) . The variable vane 200 overcomes the restoring force of the elastic member 210 and moves in a direction toward the rear guide 118. For example, when the contact portion 205 and the pressing portion 225 start to contact each other, the second discharge angle of the discharge portion 112 may have a value between 30 and 35 degrees.

When the first discharging device 110 rotates a little further, one point of the contact portion 205 comes into contact with one point of the pressing portion 225, And is fully depressed by the device 220. At this time, the elastic member 210 is in a maximally compressed state, and the size of the discharge channel 320 becomes large. Then, the discharge portion 112 forms a predetermined discharge angle (third discharge angle). For example, the third ejection angle of the ejection unit 112 may have a value between 42 and 48 degrees.

The outer peripheral surface of at least one of the abutting portion 205 and the pressing portion 225 may have a cam shape. The cam shape means a shape in which the distance from the center portion to the outer circumferential surface is not constant. According to this configuration, when the first discharging device 110 rotates while the contact portion 205 and the pressing portion 225 are in contact with each other, the pressing force applied from the pressing portion 225 to the contacting portion 205 is Increase or decrease. Accordingly, the relative movement of the variable vane 200 relative to the rear guide 118 can be smoothly performed.

6, the variable vane 200 operates as the suction volume to the blowing fan 130 increases, and the discharge volume may be formed to be large corresponding to the suction volume .

In the state of FIG. 6, when the first discharging device 110 further rotates counterclockwise, the size of the suction passage 310 is reduced. The contact portion 205 of the variable vane 200 passes through the pressing portion 225 of the pressing device 200. As a result, the variable vane 200 may be spaced apart from the pushing device 200. In this rotation process, the discharge angle of the first discharge portion 112 may increase.

The external force acting on the variable vane 200 is released as the variable vane 200 is spaced apart from the pressing device 200. As a result, the variable vane 200 can be restored to the restoring force of the elastic member 210 To the discharge passage 320 side. As a result, the variable vane 200 shields at least a portion of the discharge passage 320, thereby reducing the size of the discharge passage 320. Then, the discharge portion 112 forms a preset discharge angle (fourth discharge angle). For example, the fourth discharge angle of the discharge portion 112 may have a value of 50 degrees or more.

7 shows a state in which the first discharging device 110 is rotated counterclockwise as much as possible, and the discharging angle of the discharging portion 112 at this time may be 100 degrees, for example.

In other words, in FIG. 7, the size of the suction passage 310 of the first blowing fan 130 is reduced, and the size of the discharge passage 320 is also reduced.

As described above, in the process of increasing or decreasing the size of the suction passage, that is, the suction volume, the variable vane 200 operates and the size of the discharge passage, that is, the discharge volume increases or decreases corresponding to the suction volume The surging phenomenon due to the difference between the suction volume and the discharge volume can be prevented. As a result, noise during operation of the indoor unit can be reduced, and the discharge performance can be improved by increasing the discharge air volume.

Discharge angle (°) Whether surging occurred: Prior art (variable vane uninstalled) Whether surging occurred: The present embodiment (variable vane installation) 0 O X 10 O X 20 O X 30 O X 40 X X 50 X X

Table 1 shows experimental data. In the prior art in which the variable vane described in the present embodiment is not provided in the discharge main body, when the discharge angle of the discharge portion 112 is in the range of 0 to 30 degrees, that is, When the discharge device rotates to the position, surging occurs, noise occurs, and the discharge amount decreases. That is, when the size of the suction passage of the blowing fan is relatively small, it can be seen that surging occurs due to the difference between the suction volume and the discharge volume.

On the other hand, when the variable vane according to the present embodiment is installed in the rear guide, it can be seen that surging does not occur regardless of the discharge angle of the discharge portion 112.

As a result, it can be seen that, when the variable vane according to the present embodiment is installed in the rear guide, it is possible to prevent the occurrence of surging which is pointed out as a problem of the prior art.

10: indoor unit 20: case
23: front panel 25: side panel
27: rear panel 31: suction portion 70: filter device 80: heat exchanger
110: first discharging device 111: first discharging main body
117, 157: Stabilizer 118, 158: Rear guide
130: first blowing fan 150: second discharging device
151: second discharge main body 170: second blowing fan
190: partitioning unit 191: first partitioning unit
195: second compartment 200: variable vane
205: contact portion 210: elastic member
220: pushing device 225: pressing part
310: Suction flow path 320: Discharge flow path

Claims (18)

case;
A suction unit formed at a rear portion of the case and sucking air;
A heat exchanger for exchanging heat between the suctioned air and the suctioned air; And
And a discharge device for discharging the heat-exchanged air in the heat exchanger to an indoor space,
In the above-described discharge device,
A discharge main body rotatably provided;
A blowing fan provided inside the discharge main body and generating a blowing force;
A variable vane which is movably provided in a discharge passage of the blowing fan and increases or decreases a size of the discharge passage; And
A pressing device installed on one side of the discharge main body for selectively pressing the variable vane,
In the discharge main body,
And a rear guide disposed to surround the outer circumferential surface of the blowing fan, the rear guide being spaced from the outer circumferential surface of the blowing fan by a predetermined distance,
Wherein the variable vane is provided on the rear guide. delete delete The method according to claim 1,
One side of the variable vane is coupled to the rear guide,
And the other side portion of the variable vane is movably provided around the one side portion. The method according to claim 1,
Wherein the variable vane is integrally formed with the rear guide. The method according to claim 1,
In the discharge main body,
And an elastic member coupled to the variable vane to provide a restoring force to the variable vane. The method according to claim 6,
Wherein the elastic member includes a compression spring. The method according to claim 1,
Wherein the pressing device is installed on a supporter which supports one side of the discharging device. 9. The method of claim 8,
In the pressing device,
A pressing body placed on an upper surface of the supporter; And
And a pressing portion provided on an upper portion of the pressing body to selectively press the variable vane. 10. The method of claim 9,
In the variable vane,
And a contact portion protruding from one surface of the variable vane toward the discharge passage and being pushed by the pressing portion. 11. The method of claim 10,
Wherein the outer peripheral surface of at least one of the pressing portion and the contacting portion has a cam shape. The method according to claim 1,
In the above-described discharge device,
Wherein the first and second discharging devices are arranged in a lateral direction in front of the case. The method according to claim 1,
In the blowing fan,
And a cross flow fan for sucking the air in the circumferential direction and discharging the air in the direction of the outer circumference. case;
A suction unit formed at a rear portion of the case and sucking air;
A heat exchanger for exchanging heat between the suctioned air and the suctioned air;
A blowing fan provided at an outlet side of the heat exchanger and forming a discharge flow path;
A discharge main body rotatably disposed to surround at least a part of the blowing fan and having a discharge portion for discharging air;
A first vane provided in the discharge portion and guiding the discharge of air;
A second vane movably provided on one surface of the discharge main body and having a contact portion protruding toward the discharge passage; And
And a pressing device having a pressing part capable of pressing the contact part of the second vane when the discharge main body rotates,
Wherein the outer peripheral surface of at least one of the pressing portion and the contacting portion has a cam shape. 15. The method of claim 14,
Wherein the first vane is fixed to the discharge portion,
And the second vane performs relative movement with respect to the discharge body. 15. The method of claim 14,
Wherein the second vane comprises:
Wherein the ventilation fan moves in a direction that can increase or decrease the size of the discharge passage of the blowing fan. 17. The method of claim 16,
And an elastic member for providing a restoring force to move the second vane toward the discharge passage. 18. The method of claim 17,
Wherein the elastic member is installed between one side of the discharge main body and the second vane.

KR1020150097336A 2015-07-08 2015-07-08 Indoor unit for an air conditioner KR101712274B1 (en)

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KR102401527B1 (en) * 2017-09-28 2022-05-24 삼성전자주식회사 Air conditioner
CN109323437B (en) * 2018-11-19 2024-06-14 奥克斯空调股份有限公司 Air flow adjusting structure of air duct and air conditioner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000719A1 (en) * 1992-06-23 1994-01-06 Bart Petterson Ceiling vent with movable vane
KR100814023B1 (en) 2007-02-21 2008-03-17 삼성전자주식회사 Air conditioner
KR101516365B1 (en) * 2014-12-31 2015-05-04 엘지전자 주식회사 Air conditioner

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Publication number Priority date Publication date Assignee Title
KR101927440B1 (en) * 2012-03-16 2018-12-10 엘지전자 주식회사 An air conditioner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000719A1 (en) * 1992-06-23 1994-01-06 Bart Petterson Ceiling vent with movable vane
KR100814023B1 (en) 2007-02-21 2008-03-17 삼성전자주식회사 Air conditioner
KR101516365B1 (en) * 2014-12-31 2015-05-04 엘지전자 주식회사 Air conditioner

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