Search

CN-224201782-U - Air duct assembly and air conditioner indoor unit

CN224201782UCN 224201782 UCN224201782 UCN 224201782UCN-224201782-U

Abstract

The application discloses an air duct assembly and an air conditioner indoor unit. The shell is provided with two air outlets which are arranged at intervals in the height direction. The centrifugal fan is arranged at the end part of the air duct component in the length direction, and comprises an outer volute, an inner volute and centrifugal fan blades. The inner volute is rotatably arranged in the inner cavity of the outer volute so that air flow exhausted by the centrifugal fan blade flows to one of the two air outlets to change the air outlet position. The heat exchanger is located the axial lateral part of centrifugal fan, and the length direction of heat exchanger is parallel with centrifugal fan's axis. A motor for driving centrifugal fan can place the axial lateral part at centrifugal fan, further increases the compactedness of structure, can make centrifugal fan have bigger volume under the less circumstances of wind channel subassembly whole volume for centrifugal fan's anti-static pressure ability is stronger, promotes the air-out effect, and can reduce the space occupation of air conditioning indoor set.

Inventors

  • MA ZHAOJUN
  • YUAN GUOLU
  • ZHANG SHUAI
  • Lin Xianting

Assignees

  • 珠海格力电器股份有限公司

Dates

Publication Date
20260505
Application Date
20250507

Claims (13)

  1. 1. An air duct assembly, comprising: a housing having two air outlets (31, 32) arranged at an interval in the height direction; The centrifugal fan (1) is arranged at the end part of the air duct component in the length direction (X), the centrifugal fan (1) comprises an outer volute (11), an inner volute (12) and centrifugal blades (13), the inner volute (12) is rotatably arranged in an inner cavity of the outer volute (11) so that air flow discharged by the centrifugal blades flows to one of the two air outlets (31, 32) to change the air outlet position, and The heat exchanger (2), the heat exchanger (2) is located the axial lateral part of centrifugal fan (1), the length direction of heat exchanger (2) with the axis parallel of centrifugal fan (1).
  2. 2. The air duct assembly according to claim 1, characterized in that the inner volute (12) circumferentially shields a portion of the centrifugal fan blade (13) to form a shielding zone and an opening zone in the circumferential direction of the centrifugal fan blade (13), the outer volute (11) having an axial inlet (11A) and two axial outlets (11 b,11 c) provided in correspondence with the two air outlets (31, 32), respectively, the axial inlet (11A) and the two axial outlets (11 b,11 c) being provided on the same axial end face of the outer volute (11), an air flow entering the centrifugal fan blade (13) axially from the axial inlet (11A) and flowing along an inner wall of the inner volute (12) to the opening zone for discharge, the inner volute (12) being configured to be rotated to different positions to change the position of the opening zone so that the opening zone is selectively in communication with one of the two axial outlets (11 b,11 c), the two air outlets (31, 11 c) being provided in correspondence with the two axial outlets (1, 11 c), respectively.
  3. 3. The air duct assembly according to claim 2, wherein the air outlets (31, 32) are provided in a front side of the housing for blowing air forward.
  4. 4. A duct assembly according to claim 3, characterized in that it further comprises an air outlet guiding structure comprising at least one arc-shaped plate (4), said at least one arc-shaped plate (4) extending from within said axial outlet (11 b,11 c) to said air outlet (31, 32) to form at least two spaced air guiding channels between said axial outlet (11 b,11 c) and said air outlet (31, 32), said at least one arc-shaped plate (4) being configured such that the air flow exiting from said axial outlet (11 b,11 c) flows along said air guiding channels to said air outlet (31, 32) and blows forward.
  5. 5. A wind tunnel assembly according to claim 1, characterised in that the wind outlets (31, 32) extend in the length direction (X) of the wind tunnel assembly.
  6. 6. The air duct assembly according to any one of claims 1 to 5, characterized in that the centrifugal fan further comprises a volute tongue (14) and a first abutment (15) and a second abutment (16) provided on an inner wall of the outer volute (11), the volute tongue (14) being provided at an end of the inner volute (12), the first abutment (15) and the second abutment (16) being adapted to abut the volute tongue (14) during rotation of the inner volute (12) to define the position of the inner volute (12).
  7. 7. The air duct assembly according to claim 6, wherein the first and second abutment portions (15, 16) are each configured as a stepped structure with an end face for abutment with the volute tongue (14).
  8. 8. The air duct assembly according to claim 6, wherein end surfaces of the first and second abutment portions (15, 16) are configured to face the same side in a width direction (Y) of the air duct assembly, and the inner volute (12) is configured to rotate in an opposite direction to switch from a lower air-out state to an upper air-out state after rotating clockwise or counterclockwise to switch from the upper air-out state to the lower air-out state.
  9. 9. The air duct assembly according to claim 6, characterized in that the volute tongue (14) is arranged obliquely with respect to the axis of the centrifugal fan (1), the volute tongue (14) gradually leaning towards the rear side of the air duct assembly from the end of the centrifugal fan (1) remote from the heat exchanger (2) to the end close to the heat exchanger (2).
  10. 10. The air duct assembly according to claim 9, characterized in that the angle between the volute tongue (14) and the axis of the centrifugal fan (1) is greater than or equal to 10 ° and less than or equal to 40 °.
  11. 11. The air duct assembly according to claim 10, characterized in that the angle between the volute tongue (14) and the axis of the centrifugal fan (1) is equal to 17 °.
  12. 12. The air duct assembly according to any one of claims 1 to 11, comprising two opposite centrifugal fans (1), wherein the two centrifugal fans (1) are coaxially arranged, the housing has two sets of two air outlets (31, 32) arranged along the longitudinal direction (X) in a blocking manner, the two centrifugal fans (1) are respectively located at two ends of the two sets of two air outlets (31, 32) in the longitudinal direction (X), and during operation of the air duct assembly, an air flow entering the air duct assembly from the outside of the air duct assembly is divided into two paths between the two centrifugal fans (1) and flows to the two sets of two air outlets (31, 32) under the action of the two centrifugal fans (1).
  13. 13. An air conditioning indoor unit comprising the duct assembly of any of claims 1 to 12.

Description

Air duct assembly and air conditioner indoor unit Technical Field The application relates to the technical field of air conditioning, in particular to an air duct assembly and an air conditioner indoor unit. Background The conventional wall-mounted air conditioner indoor unit adopts a single air outlet structure, the air outlet is positioned at the bottom side of the machine body, and refrigerating and heating air supply is blown out through the air outlet. The air outlet is close to the lower part of the machine body, cold air is easy to blow onto a human body in a refrigerating mode, so that the human body feel uncomfortable, air conditioning diseases are easy to cause for a long time, and the problem cannot be thoroughly solved even if the air supply direction is changed by adjusting the angle of the air deflector. It should be noted that the statements in this background section merely provide background information related to the present disclosure and may not necessarily constitute prior art. Disclosure of utility model The application provides an air duct assembly and an air conditioner indoor unit, which are used for improving the use comfort of a user and reducing the space occupation. A first aspect of the present application provides an air duct assembly comprising: the shell is provided with two air outlets which are arranged at intervals in the height direction; The centrifugal fan is arranged at the end part of the air duct component in the length direction and comprises an outer volute, an inner volute and centrifugal fan blades, wherein the inner volute is rotatably arranged in an inner cavity of the outer volute, so that air flow discharged by the centrifugal fan blades flows to one of the two air outlets to change the air outlet position; and And the heat exchanger is positioned at the axial side part of the centrifugal fan, and the length direction of the heat exchanger is parallel to the axis of the centrifugal fan. In some embodiments, the inner volute circumferentially shields a portion of the centrifugal fan blade to form a shielding region and an opening region in the circumferential direction of the centrifugal fan blade, the outer volute has an axial inlet and two axial outlets respectively provided corresponding to the two air outlets, the axial inlet and the two axial outlets are both provided on a same axial end face of the outer volute, an air flow axially enters the centrifugal fan blade from the axial inlet and flows into the opening region along an inner wall of the inner volute to be discharged, the inner volute is configured to rotate to different positions to change the position of the opening region so that the opening region is selectively communicated with one of the two axial outlets, and the two air outlets are both provided on an axial side portion of the centrifugal fan and respectively correspondingly communicated with the two axial outlets (11 b,11 c). In some embodiments, the air outlet is formed on a front side of the housing to blow the air flow forward. In some embodiments, the duct assembly further comprises an air outlet guide structure comprising at least one arcuate plate extending from within the axial outlet to the air outlet to form at least two spaced air guide flow passages between the axial outlet and the air outlet, the at least one arcuate plate being configured such that air flow exiting the axial outlet flows along the air guide flow passages to the air outlet and is blown forward. In some embodiments, the air outlet extends along the length of the air duct assembly. In some embodiments, the centrifugal fan further comprises a volute tongue and a first abutment and a second abutment disposed on an inner wall of the outer volute, the volute tongue being disposed at an end of the inner volute, the first abutment and the second abutment being configured to abut the volute tongue during rotation of the inner volute to define a position of the inner volute. In some embodiments, the first abutment and the second abutment are each configured as a stepped structure with an end surface for abutment with the volute tongue. In some embodiments, the end surfaces of the first and second abutments are configured to face the same side in the width direction of the duct assembly, and the inner volute is configured to rotate in the opposite direction to switch from the lower air-out state to the upper air-out state after rotating clockwise or counterclockwise to switch from the upper air-out state to the lower air-out state. In some embodiments, the volute tongue is disposed obliquely to the axis of the centrifugal fan, from an end of the centrifugal fan distal from the heat exchanger to an end proximal to the heat exchanger, the volute tongue gradually leaning toward the rear side of the air duct assembly. In some embodiments, the angle between the volute tongue and the axis of the centrifugal fan is greater than or equal to 10 ° and less than or equal to 40 °.