Air conditioner

Patent metadata

Field	Value
Publication number	US-10156376-B2
Application number	US-201314431829-A
Country	US
Kind code	B2
Filing date	Aug 12, 2013
Priority date	Sep 28, 2012
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

An indoor unit 1 of an air conditioner includes a cross flow fan 10 and a rear guider 20 and a stabilizer 32 which are provided on the respective sides of the outer periphery of the cross flow fan 10 to form an air passage. Each of the rear guider 20 and the stabilizer 32 has, at least at a part in the axial direction which part is on the leading end side, twisted portions 23, 37. In the circumferential direction of the cross flow fan 10, each twisted portion 23, 37 is deviated from the axial direction of the cross flow fan 10 gradually from one end to the other end.

First claim

The invention claimed is:

1. An air conditioner comprising:
a cross flow fan which extends in an axial direction and includes vanes lined up in a circumferential direction; and
a stabilizer and a rear guider which are provided on respective sides of an outer periphery of the cross flow fan to form an air passage,
at least one of the stabilizer and the rear guider including a plurality of twisted portions lined up in the axial direction, the plurality of twisted portions being provided at least at a part in the axial direction of the at least one of the stabilizer and the rear guider and at a leading end in the circumferential direction of the at least one of the stabilizer and the rear guider,
each of the plurality of twisted portions is deviated from the axial direction, gradually increasing in the circumferential direction, from one end of the twisted portion to an other end thereof in the axial direction.

2. The air conditioner according to claim 1 , wherein, each of the plurality of twisted portions is uniform in shape across any cross section thereof orthogonal to the axial direction.

3. The air conditioner according to claim 2 , wherein, the plurality of twisted portions are provided on the rear guider, and occupies a part between a closest position which is closest to the outer periphery of the cross flow fan and the at least one leading end.

4. The air conditioner according to claim 2 , wherein, the plurality of twisted portions are provided on the stabilizer, and occupies a closest position which is closest to the outer periphery of the cross flow fan.

5. The air conditioner according to claim 1 , wherein,
the vanes included in the cross flow fan are provided in a plurality of; vane wheels lined up in the axial direction, the plurality of vane wheels including at least two neighboring vane wheels,
the vanes of two neighboring vane wheels are deviated from one another in the circumferential direction, and
a connecting portion connecting two neighboring twisted portions with each other is positioned to oppose a connecting portion connecting the two neighboring vane wheels.

6. The air conditioner according to claim 5 , wherein, the plurality of twisted portions are provided on the rear guider, and occupies a part between a closest position which is closest to the outer periphery of the cross flow fan and the at least one leading end.

7. The air conditioner according to claim 5 , wherein, the plurality of twisted portions are provided on the stabilizer, and occupies a closest position which is closest to the outer periphery of the cross flow fan.

8. The air conditioner according to claim 5 , wherein, in a direction from one end to an other end of the cross flow fan in the axial direction, a direction of deviation in the circumferential direction between opposing end portions of the two neighboring twisted portions in the axial direction is identical with a direction of deviation in the circumferential direction between the vanes of the two neighboring vane wheels.

9. The air conditioner according to claim 8 , wherein, the plurality of twisted portions are provided on the rear guider, and occupies a part between a closest position which is closest to the outer periphery of the cross flow fan and the at least one leading end.

10. The air conditioner according to claim 8 , wherein, the plurality of twisted portions are provided on the stabilizer, and occupies a closest position which is closest to the outer periphery of the cross flow fan.

11. The air conditioner according to claim 8 , wherein, a deviation angle in the circumferential direction between the opposing end portions of the two neighboring twisted portions in the axial direction is not smaller than 50% and not larger than 150% of a deviation angle in the circumferential direction between the vanes of the two neighboring vane wheels.

12. The air conditioner according to claim 11 , wherein, the plurality of twisted portions are provided on the rear guider, and occupies a part between a closest position which is closest to the outer periphery of the cross flow fan and the at least one leading end.

13. The air conditioner according to claim 1 , wherein, the plurality of twisted portions are provided on the rear guider, and occupies a part between a closest position which is closest to the outer periphery of the cross flow fan and the at least one leading end.

14. The air conditioner according to claim 13 , wherein, in the plurality of twisted portions in the rear guider, the part between the closest position and the at least one leading end is shaped to bulge away from the cross flow fan.

15. The air conditioner according to claim 1 , wherein, the plurality of twisted portions are provided on the stabilizer, and occupies a closest position which is closest to the outer periphery of the cross flow fan.

16. The air conditioner according to claim 15 , wherein, in the plurality of twisted portions in the stabilizer, the part occupying the closest position is shaped to bulge away from the cross flow fan.

17. The air conditioner according to claim 1 , wherein, leading ends in the circumferential direction of the plurality of twisted portions are at the same height.

18. The air conditioner according to claim 1 , wherein, directions of the increment of the amounts of the plurality of twisted portions from the one end to the other end thereof are identical with one another.

Assignees

• Daikin Ind Ltd

Inventors

• Nakai Satoshi
• Uda Masafumi

Classifications

• F04D29/283

  rotors of the squirrel-cage type · CPC title

• F04D29/422

  Discharge tongues (F04D17/04 takes precedence) · CPC title

• F04D29/441

  especially adapted for elastic fluid pumps · CPC title

• F04D29/666

  by means of rotor construction or layout, e.g. unequal distribution of blades or vanes · CPC title

• F04D17/04 Primary

  of transverse-flow type · CPC title