Air conditioner

Patent metadata

Field	Value
Publication number	US-12163671-B2
Application number	US-202017429457-A
Country	US
Kind code	B2
Filing date	Nov 17, 2020
Priority date	Oct 13, 2020
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

An air conditioner includes an air conditioner body including a cross-flow air duct and an air outlet in communication with the cross-flow air duct, a cross-flow impeller arranged at the cross-flow air duct and located upstream of the air outlet, and an air guide assembly including an air guide member rotatable around a pivot axis at the air outlet. The air conditioner body includes a first volute and a second volute arranged opposite to each other in a cross section perpendicular to a rotation axis of the cross-flow impeller. The cross-flow air duct is located between the first volute and the second volute. A set air duct is formed between the air guide member and the first volute when an air output volume of the air conditioner is maximum. A width of the set air duct in the cross section first increases and then decreases along an air output direction.

First claim

What is claimed is:

1. An air conditioner comprising:
an air conditioner body including a cross-flow air duct and an air outlet in communication with the cross-flow air duct;
a cross-flow impeller arranged at the cross-flow air duct and located upstream of the air outlet; and
an air guide assembly including an air guide member rotatable around a pivot axis at the air outlet;
wherein:
the air conditioner body includes a first volute and a second volute arranged opposite to each other in a cross section perpendicular to a rotation axis of the cross-flow impeller;
the cross-flow air duct is located between the first volute and the second volute; and
a set air duct is formed between the air guide member and the first volute when an air output volume of the air conditioner is maximum, and a width of the set air duct in the cross section first increases and then decreases along an air output direction.

2. The air conditioner according to claim 1 , wherein in the cross section, two side wall surfaces of the set air duct in a width direction are smooth curved surfaces.

3. The air conditioner according to claim 1 , wherein in the cross section:
a projection point Oo of the pivot axis on the cross section is located within a base circle having a circle center point O and a radius R; and
the projection point Oo, the circle center point O, the radius R, an outer end point M of the first volute, an outer end point N of the second volute, a perpendicular foot point K obtained by drawing a vertical line towards a line segment MN through the circle center point O, two end points P and Q of the air guide member in a rotation circumferential direction, and a perpendicular foot point B obtained by drawing a vertical line through the point Oo towards a perpendicular bisection line of a line segment PQ satisfy following relationships:
0.4MN≤MK≤0.6MN,

0.25MK≤KO≤0.85MK,

0.35KO≤R≤0.75KO,

PQ≤0.9MN, and

OoB≤0.5R.

4. The air conditioner according to claim 1 , wherein:
the air guide member includes an air guide surface and an outer finishing surface, in a rotation circumferential direction of the air guide member, a distance between the air guide surface and the outer finishing surface first increasing and then decreasing; and
the air guide member is configured to rotate to be in:
a first air guide state, in which the air guide surface is located on a side of the outer finishing surface close to the first volute, and a first air outlet duct is formed between the air guide surface and the first volute; and
a second air guide state, in which the air guide surface is located on a side of the outer finishing surface close to the second volute, and a second air outlet duct is formed between the air guide surface and the second volute.

5. The air conditioner according to claim 4 , wherein the air guide surface includes a curved surface with a curvature of ρ1, the outer finishing surface includes a curved surface section with a curvature of ρ2, ρ1 and ρ2 satisfying 0<ρ1<ρ2≤0.03.

6. The air conditioner according to claim 5 , wherein the outer finishing surface further includes two inclined surface sections connected to two ends of the curved surface section respectively, and an included angle α between each of the inclined surface sections and a tangent line of the curved surface section at a corresponding one of the two ends satisfies 0°≤α≥25°.

7. The air conditioner according to claim 1 , wherein:
the air guide member is configured to rotate into the cross-flow air duct;
a minimum gap between the air guide member and a side surface of the first volute facing the second volute is equal to or larger than 4 mm; and
a minimum gap between the air guide member and a side surface of the second volute facing the first volute is equal to or larger than 4 mm.

8. The air conditioner according to claim 1 , wherein the air guide member includes an inner air guide plate and an outer air guide plate, two ends of the inner air guide plate in a rotation circumferential direction are correspondingly connected to two ends of the outer air guide plate in the rotation circumferential direction, and a cavity is formed between the inner air guide plate and the outer air guide plate.

9. The air conditioner according to claim 8 , wherein the two ends of the inner air guide plate in the rotation circumferential direction are correspondingly connected to the two ends of the inner air guide plate in the rotation circumferential direction by snap joints.

10. The air conditioner according to claim 8 , wherein a surface assembly gap between the inner air guide plate and the outer air guide plate is less than or equal to 0.5 mm.

11. The air conditioner according to claim 1 , wherein:
the first volute includes:
a first linear section; a volute tongue section connected to an inner end of the first linear section; and
a first flared section connected to an outer end of the first linear section, the first flared section first extending from inside to outside in a direction away from an extension line of the first linear section and then in a direction towards the extension line of the first linear section; and

the second volute includes a second linear section and a second flared section connected to an outer end of the second linear section, the second flared section extending from inside to outside in a direction away from an extension line of the second linear section.

12. The air conditioner according to claim 11 , wherein:
the air conditioner is a mobile air conditioner;
the first flared section is located at a rear side of the second flared section;
an upper end of the first flared section is an outer end of the first volute;
an upper end of the second flared section is an outer end of the second volute; and
the upper end of the first flared section is higher than the upper end of the second flared section.

13. The air conditioner according to claim 11 , wherein:
the air conditioner is an indoor wall-mounted air conditioner;
the first flared section is located at an upper side of the second flared section;
a front end of the first flared section is configured as an outer end of the first volute;
a front end of the second flared section is configured as an outer end of the second volute; and
the front end of the first flared section is located in front of the front end of the second flared section.

Assignees

• Chongqing Midea Air Conditioning Equipment Co Ltd
• Gd Midea Air Conditioning Equipment Co Ltd

Inventors

• Wang Xidong
• Ling Jing
• Fu Yu
• Song Yingjie
• Liu Qiankun

Classifications

• F24F13/20

  Casings or covers · CPC title

• F24F13/081

  for guiding air around a curve · CPC title

• F24F1/0025 Primary

  Cross-flow or tangential fans · CPC title

• F24F11/79

  for controlling the direction of the supplied air · CPC title

• F24F1/0011 Primary

  characterised by air outlets · CPC title