Centrifugal Compressor and Centrifugal Water Chilling Unit

Patent metadata

Field	Value
Publication number	US-2016281735-A1
Application number	US-201415037359-A
Country	US
Kind code	A1
Filing date	Jul 22, 2014
Priority date	Nov 18, 2013
Publication date	Sep 29, 2016
Grant date	—

Abstract

The invention discloses a centrifugal compressor. The centrifugal compressor comprises: a housing ( 10 ), provided with a mounting chamber ( 11 ), a thread section ( 12 ) being provided on a side wall of the mounting chamber ( 11 ); an adjusting piece ( 20 ), mounted in the mounting chamber ( 11 ), the adjusting piece ( 20 ) being provided with threads adapting to the thread section ( 12 ); a driving piece ( 30 ), mounted in the mounting chamber ( 11 ) and configured to drive the adjusting piece ( 20 ) to move forwards or backwards along the thread section ( 12 ); and an adjustable diffuser ( 40 ), fixedly connected to the adjusting piece ( 20 ). The invention also discloses a centrifugal water chilling unit having the centrifugal compressor. The centrifugal compressor and the centrifugal water chilling unit can solve the problem that the adjustable diffuser easily inclines and is stuck, thereby greatly improving the reliability of the centrifugal compressor.

First claim

1 . A centrifugal compressor, comprising:
a housing ( 10 ), provided with a mounting chamber ( 11 ), a thread section ( 12 ) being provided on a side wall of the mounting chamber ( 11 ); an adjusting piece ( 20 ), mounted in the mounting chamber ( 11 ), the adjusting piece ( 20 ) being provided with threads adapting to the thread section ( 12 ); a driving piece ( 30 ), mounted in the mounting chamber ( 11 ) and configured to drive the adjusting piece ( 20 ) to move forwards or backwards along the thread section ( 12 ); and an adjustable diffuser ( 40 ), fixedly connected to the adjusting piece ( 20 ).

2 . The centrifugal compressor according to claim 1 , wherein the mounting chamber ( 11 ) comprises an annular mounting slot ( 13 ), the driving piece ( 30 ) is a driving ring mounted in the annular mounting slot ( 13 ), the adjusting piece ( 20 ) is an adjustment ring mounted in the annular mounting slot ( 13 ), and the driving ring rotates in the annular mounting slot ( 13 ) to drive the adjustment ring to move forwards or backwards.

3 . The centrifugal compressor according to claim 2 , wherein the threads are provided on an outer circumferential wall of the adjustment ring, and the thread section ( 12 ) is provided on a slot wall, opposite to the outer circumferential wall of the adjustment ring, of the annular mounting slot ( 13 ).

4 . The centrifugal compressor according to claim 1 , wherein the driving piece ( 30 ) is in driving connection with the adjusting piece ( 20 ) via a connecting rod ( 50 ).

5 . The centrifugal compressor according to claim 4 , wherein a first mounting hole ( 31 ) is provided in a first end surface of the driving piece ( 30 ), a second mounting hole ( 21 ) opposite to the first mounting holes ( 31 ) is provided in second-end surface, opposite to the first end surface, of the adjusting piece ( 20 ), and two ends of the connecting rod ( 50 ) is provided in the corresponding first mounting hole ( 31 ) and the corresponding second mounting hole ( 21 ) respectively.

6 . The centrifugal compressor according to claim 5 , wherein there are 6 to 10 connecting rods ( 50 ) which are uniformly arranged in a circumferential direction of the driving piece ( 30 ).

7 . The centrifugal compressor according to claim 1 , wherein the connecting rod ( 50 ) is a pin, and the diameter of the connecting rod ( 50 ) is φ 10 to φ 15.

8 . The centrifugal compressor according to claim 1 , further comprising a blade assembly ( 60 ), the driving piece ( 30 ) driving the blade assembly ( 60 ) to rotate.

9 . The centrifugal compressor according to claim 8 , wherein the blade assembly ( 60 ) comprises:
a blade ( 61 ), located at an air inlet ( 80 ) of the centrifugal compressor; a blade shaft ( 62 ), a first end of the blade shaft ( 62 ) being fixedly connected to the blade ( 61 ), and an end, away from the blade ( 61 ), of the blade shaft ( 62 ) penetrating into the mounting chamber ( 11 ); a limiting nut ( 63 ), detachably provided at the end, away from the blade ( 61 ), of the blade shaft ( 62 ); and an execution piece ( 64 ), fixed to the blade shaft ( 62 ), the execution piece ( 64 ) being in driving connection with the driving piece ( 30 ).

10 . The centrifugal compressor according to claim 9 , wherein the execution piece ( 64 ) is a bevel gear, and a rack ( 32 ) matched with the bevel gear is provided on an end surface, close to the bevel gear, of the driving piece ( 30 ).

11 . The centrifugal compressor according to claim 10 , wherein the bevel gear is fixed to the blade shaft ( 62 ) via a key joint.

12 . The centrifugal compressor according to claim 9 , wherein a mounting groove ( 22 ) is provided on a inner side of the adjusting piece ( 20 ), and a end, away from the blade ( 21 ), of the blade shaft ( 62 ) is located in the mounting groove ( 22 ).

13 . The centrifugal compressor according to any one of claims 5 , wherein the connecting rod ( 50 ) is a pin, and the diameter of the connecting rod ( 50 ) is φ 10 to φ 15.

14 . The centrifugal compressor according to any one of claims 6 , wherein the connecting rod ( 50 ) is a pin, and the diameter of the connecting rod ( 50 ) is φ 10 to φ 15.

15 . A centrifugal water chilling unit, comprising a centrifugal compressor, the centrifugal compressor being a centrifugal compressor according to claim 1 .

Assignees

• Gree Electric Appliances Inc Zhuhai

Inventors

• Jiang Nan
• Zhong Ruixing
• Jiang Caiyun
• Xie Rong
• Wang Hongxing
• Liu Jianfei
• Chen Yuhui

Classifications

• F04D29/4213

  suction ports · CPC title

• F04D29/4206

  especially adapted for elastic fluid pumps · CPC title

• F05D2250/51

  Inlet · CPC title

• F04D29/464

  adjusting flow cross-section, otherwise than by using adjustable stator blades · CPC title

• F04D29/661

  especially adapted for elastic fluid pumps · CPC title