CN-122029361-A - Air conditioner

CN122029361ACN 122029361 ACN122029361 ACN 122029361ACN-122029361-A

Abstract

An air conditioner is disclosed, including a housing and an axial flow fan. The housing defines an air outlet. The axial flow fan includes a middle plate and at least one blade. The blade includes a first side edge, a second side edge, a fourth side edge, and a third side edge. The first side edge and the second side edge are opposite side edges of the blade along the circumferential direction of the middle plate. The fourth side edge is one side edge of the blade close to the middle plate. The third side edge is one side edge of the blade away from the middle plate. A straight line that defines any point on the circumferential section of the blade and is perpendicular to the axis of the center plate is a first straight line, a tangent line that defines the any point on the circumferential section of the blade is a second straight line, and an acute angle between the first straight line and the second straight line is an angle β. In the direction from the fourth side edge to the third side edge, the angle beta on the first side edge increases, decreases and increases.

Inventors

WANG HAONAN
YAN LUHUA
HU TIANEN
JIANG YIXIN
LIU XIAOMIN

Assignees

青岛海信日立空调系统有限公司

Dates

Publication Date: 20260512
Application Date: 20240220
Priority Date: 20231120

Claims (14)

An air conditioner, comprising: a housing defining an air outlet; An axial flow fan corresponding to the air outlet and arranged in the shell, wherein the axial flow fan is configured to drive air to flow, and the axial flow fan comprises: middle plate, and At least one blade connected to an outer periphery of the center plate, the blade comprising: A first side edge; The first side edge and the second side edge are opposite side edges of the blade along the circumferential direction of the middle disc; a third side edge which is one side edge of the blade away from the middle disk, and A fourth side edge which is one side edge of the blade close to the middle plate; a straight line which defines any point on the circumferential section of the blade and is perpendicular to the axis of the middle disc is a first straight line, a tangent line which defines any point on the circumferential section of the blade is a second straight line, and an acute angle between the first straight line and the second straight line is an angle beta; Wherein, in the direction from the fourth side edge to the third side edge, the angle beta on the first side edge is firstly increased, then decreased and then increased.
The air conditioner according to claim 1, wherein in the fourth-to-third-side-edge direction, the first side edge is recessed in a direction away from the air outlet and then projected in a direction toward the air outlet.
The air conditioner according to claim 1 or2, wherein a β angle on the second side edge is in a decreasing trend in a direction from the fourth side edge to the third side edge.
The air conditioner according to any one of claims 1 to 3, wherein a β angle on the third side edge is in a decreasing trend in a direction from the second side edge to the first side edge.
The air conditioner according to any one of claims 1 to 4, wherein the vane further includes a plurality of notches disposed at the second side edge at intervals along an extending direction of the second side edge.
The air conditioner according to any one of claims 1 to 5, wherein the center tray includes: an outer ring portion, the at least one blade being disposed on an outer peripheral surface of the outer ring portion; a support part disposed in the outer ring part, and And a plurality of openings provided on a side of the outer ring portion facing the air outlet and configured to reduce the weight of the axial flow fan.
The air conditioner of claim 6, wherein the middle tray further comprises a first enclosing part and a second enclosing part, any one of the plurality of openings being enclosed by the first enclosing part and the second enclosing part; Wherein at least a portion of the first enclosure is parallel to the fourth side edge of the blade and at least a portion of the second enclosure is parallel to the axis of the center plate.
The air conditioner according to any one of claims 1 to 7, wherein the vane further comprises a protrusion portion provided at a side surface of the vane remote from the air outlet, the protrusion portion being provided near the first side edge and extending in an extending direction of the first side edge; wherein the width and thickness of the projection increase in the direction from the third side edge to the fourth side edge.
The air conditioner of any one of claims 1 to 8, wherein the housing further defines an air inlet disposed opposite the air outlet; the air conditioner further includes: Air guide ring, and The annular ring is arranged coaxially with the air guide ring, is positioned on one side of the air guide ring, which is close to the air inlet, and one end of the annular ring, which is close to the air outlet, is positioned on the radial inner side of the air guide ring; the air guide ring is provided with an air inlet, an air outlet and an air outlet, wherein a first part of the blade, which is close to the air outlet, is positioned in the air guide ring, a second part of the blade, which is close to the air inlet, is positioned in the annular ring, and the blade is connected with the annular ring.
The air conditioner of claim 9, wherein a width of a gap between the air guide ring and the first portion of the vane is substantially equal to a width of a gap between the air guide ring and the annular ring in a radial direction of the air guide ring.
The air conditioner according to claim 9 or 10, wherein the annular ring includes: An air guiding section, and The first extending section is connected with one end of the air guide section in the axial direction, and the other end of the first extending section in the axial direction extends to the radial inner side of the air guide ring towards the direction close to the air outlet; wherein the radius of the other end of the first extension is smaller than the radius of the one end of the first extension.
The air conditioner of claim 11, wherein the air guide ring includes a second extension that matches the shape of the first extension and is located radially outward of the first extension.
The air conditioner of claim 12, wherein the other end of the first extension is coplanar with an end of the second extension near the air outlet, and a plane passing through the other end of the first extension and the end of the second extension near the air outlet is perpendicular to an axis of the center tray.
An air conditioner, comprising: a housing defining an air outlet; An axial flow fan corresponding to the air outlet and arranged in the shell, wherein the axial flow fan is configured to drive air to flow, and the axial flow fan comprises: middle plate, and At least one blade connected to an outer periphery of the center plate, the blade comprising: A first side edge; The first side edge and the second side edge are opposite side edges of the blade along the circumferential direction of the middle disc; a fourth side edge which is one side edge of the blade close to the middle disk, and The blade comprises a middle disc, a first side edge, a second side edge, a third side edge and a third side edge, wherein the first side edge is a side edge of the blade away from the middle disc; a straight line which defines any point on the circumferential section of the blade and is perpendicular to the axis of the middle disc is a first straight line, a tangent line which defines any point on the circumferential section of the blade is a second straight line, and an acute angle between the first straight line and the second straight line is an angle beta; Wherein, in the direction from the fourth side edge to the third side edge, the angle beta on the first side edge is firstly increased, then decreased and then increased.

Description

Air conditioner The present application claims priority to chinese patent application No. 202311553614.8 filed 11/20/2023, priority to chinese patent application No. 202323147415.5 filed 11/21/2023, and priority to chinese patent application No. 202323137357.8 filed 11/20/2023, which are incorporated herein by reference in their entirety. Technical Field The present disclosure relates to the field of air processing technologies, and in particular, to an air conditioner. Background With the continuous progress of technology and the improvement of living standard of people, air conditioners become an indispensable electrical appliance in daily life. The air inlet and the air outlet of the air conditioner are not separated from the fan. For example, an outdoor unit of an air conditioner often uses an axial flow fan having a cylindrical middle plate and a plurality of blades connected along a circumferential surface of the middle plate, and when the middle plate is driven to rotate, the blades rotate following the middle plate, thereby pushing an air flow. Disclosure of Invention In one aspect, an air conditioner is provided that includes a housing and an axial flow fan. The housing defines an air outlet. The axial flow fan corresponds to the air outlet and is arranged in the shell. The axial flow fan is configured to drive an air flow. The axial flow fan includes a middle plate and at least one blade. The at least one vane is connected to the outer periphery of the center plate. The blade includes a first side edge, a second side edge, a third side edge, and a fourth side edge. The first side edge and the second side edge are opposite side edges of the blade along the circumferential direction of the middle plate. The fourth side edge is one side edge of the blade close to the middle plate. The third side edge is one side edge of the blade away from the middle plate. A straight line that defines any point on the circumferential section of the blade and is perpendicular to the axis of the center plate is a first straight line, a tangent line that defines the any point on the circumferential section of the blade is a second straight line, and an acute angle between the first straight line and the second straight line is an angle β. In the direction from the fourth side edge to the third side edge, the angle beta on the first side edge increases, decreases and increases. In another aspect, an air conditioner is provided that includes a housing and an axial flow fan. The housing defines an air outlet. The axial flow fan corresponds to the air outlet and is arranged in the shell. The axial flow fan is configured to drive an air flow. The axial flow fan includes a middle plate and at least one blade. The at least one vane is connected to the outer periphery of the center plate. The blade includes a first side edge, a second side edge, a third side edge, and a fourth side edge. The first side edge and the second side edge are opposite side edges of the blade along the circumferential direction of the middle plate. The fourth side edge is one side edge of the blade close to the middle plate. The third side edge is one side edge of the blade away from the middle plate. The part of the blade, which is close to the second side edge and the third side edge, is warped towards the direction away from the air outlet. A straight line that defines any point on the circumferential section of the blade and is perpendicular to the axis of the center plate is a first straight line, a tangent line that defines the any point on the circumferential section of the blade is a second straight line, and an acute angle between the first straight line and the second straight line is an angle β. In the direction from the fourth side edge to the third side edge, the angle beta on the first side edge increases, decreases and increases. In still another aspect, an air conditioner is provided that includes a housing and an axial flow fan. The shell is internally provided with a containing cavity, and the side wall of the shell is provided with an air outlet. The axial flow fan is arranged in the accommodating cavity, the axial flow fan corresponds to the air outlet in position, and the air outlet is positioned on the air outlet side of the axial flow fan. The axial flow fan includes a middle plate and a plurality of blades. The middle plate is connected with a driving mechanism and is configured to rotate under the driving of the driving mechanism. The plurality of blades are arranged at intervals on the periphery of the middle plate along the circumferential direction of the middle plate. Any one of the plurality of blades includes a first side edge, a second serration, a second side edge, and a third side edge. The second serration is disposed on the first side edge. The first side edge and the second side edge are opposite side edges of the either blade in the circumferential direction of the center plate. The third side edge is a side edge