CN103016409A - Novel interstage air supplementing device of multi-stage compression centrifugal type refrigeration compressor - Google Patents
Novel interstage air supplementing device of multi-stage compression centrifugal type refrigeration compressor Download PDFInfo
- Publication number
- CN103016409A CN103016409A CN2012105653274A CN201210565327A CN103016409A CN 103016409 A CN103016409 A CN 103016409A CN 2012105653274 A CN2012105653274 A CN 2012105653274A CN 201210565327 A CN201210565327 A CN 201210565327A CN 103016409 A CN103016409 A CN 103016409A
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- stage
- level
- impeller
- interstage
- diffuser
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a novel interstage air supplementing device of a multi-stage compression centrifugal type refrigeration compressor. The air supplementing device is characterized in that a second-stage exhaust volute (19) is arranged in a casing (1); a first-stage suction guiding ring (11), a first-stage impeller (5), a second-stage impeller (10) and an impeller distance ring (8) are arranged on a transmission shaft (9); a second-stage suction passage (15) is arranged in an interstage baffle (3); a first-stage exhaust passage (14) is formed between a first-stage diffuser (2) and the interstage baffle (3) in the casing (1); a second-stage exhaust passage (17) is formed between the interstage baffle (3) and the second-stage impeller (10); the casing (1), the first-stage diffuser (2) and the interstage baffle (3) commonly form an air supplementing and supplying passage (20); a straight slot section (18) is formed between the first-stage diffuser (2) and the interstage baffle (3); and an inter-stage sealing ring (7), a first-stage wheel cover sealing (4) and a second-stage wheel cover sealing (6) are arranged. By the device, the interstage air can uniformly enter a reflux apparatus of the compressor; the efficiency of the compressor is improved; and the airflow noise of the compressor is reduced.
Description
Technical field:
The present invention relates to a kind of large centrifugal heat pump unit a kind of novel inter-stage making-up air device of multistage compression centrifugal refigerating compressor, belong to a kind of new device of centrifugal compressor field energy-conserving and environment-protective.
Background technique:
Centrifugal heat pump unit, mainly formed by bilobed wheel compressor, condenser, economizer, vaporizer and throttling arrangement, belong to two stage compression, component cooling system, the refrigerant gas that the one-level compression is discharged, through bend and return channel, with the refrigerant gas of flash distillation in the economizer of the making-up air device of flowing through together, enter sencond stage impeller, continue compression.
The inter-stage gas supplementing opening of two stage compression centrifugal compressor generally adopts circular gas supplementing opening partial cut to tonifying Qi, and part circular shape gas supplementing opening partial cut is mixed by bend position and one-level exhaust to tonifying Qi; Perhaps other pattern gas supplementing openings after bend or return channel position and one-level exhaust mixing, enter sencond stage impeller, and it is inhomogeneous not only to exist the gas mixing, and gas is large, and the large grade of noise is not enough, also can affect the efficient of compressor.
Summary of the invention:
The purpose of this invention is to provide a kind of so that inter-stage gas can enter the return channel of compressor more equably, both improved the efficient of compressor, reduced again the inter-stage making-up air device of the new multistage compression centrifugal compressor of compressor airflow noise.
Purpose of the present invention can reach by following measure: a kind of inter-stage making-up air device of new multistage compression centrifugal refigerating compressor, it comprises shell, transmission shaft, it is characterized in that being provided with in the shell secondary exhaust volute, transmission shaft is provided with the air-breathing guide ring of one-level, the one-level impeller, sencond stage impeller, be provided with the impeller spacer ring between transmission shaft upper level impeller and the sencond stage impeller, the impeller spacer ring is provided with interstage diaphragm outward, be provided with the secondary air intake passage in the interstage diaphragm, be provided with cross-over bush between impeller spacer ring and the interstage diaphragm, be provided with the one-level Diffuser in the shell, form the one-level exhaust passage between one-level Diffuser and the interstage diaphragm, form the secondary exhaust passage between interstage diaphragm and the sencond stage impeller, be provided with the sealing of one-level wheel cap between one-level Diffuser and the one-level impeller, be provided with the sealing of secondary wheel cap between interstage diaphragm and the sencond stage impeller, shell, the common annular space that consists of of one-level Diffuser and interstage diaphragm is 360 ° of tonifying Qi air supply channels, consists of the straight trough section between one-level Diffuser and the interstage diaphragm.
In order further to realize purpose of the present invention, the tail end of described one-level exhaust passage is circular-arc.
In order further to realize purpose of the present invention, the width D of described straight trough section is 3cm-7cm.
The present invention can produce following good effect compared with the prior art: the present invention utilizes the common 360 ° of annular tonifying Qi air supply channels that consist of of one-level Diffuser, interstage diaphragm and shell, so that the gas that is caused by local tonifying Qi has been eliminated in equably tonifying Qi in 360 ° of scopes simultaneously; Utilize to form the circular arc that the air intake passage tail end arranges between one-level Diffuser and the interstage diaphragm, change in advance the airflow direction of one-level exhaust, and the tonifying Qi air-flow is played the effect of injection; By adjusting the width of the straight trough section that one-level Diffuser and interstage diaphragm consist of, adjust the tonifying Qi speed of annular groove outlet, make it more to mate with one-level exhaust airstream speed, improve the uniformity that two strands of air-flows mix, improve the gettering efficiency of secondary and the performance of compressor.The invention enables the inter-stage tonifying Qi evenly to mix with the one-level exhaust, reduce the gas that caused by tonifying Qi, thereby reduce compressor noise; Guarantee that secondary is air-breathing evenly, improve the gettering efficiency of secondary and the performance of compressor.
Description of drawings:
Accompanying drawing is structural representation of the present invention.
Embodiment: preferred forms of the present invention is elaborated below in conjunction with accompanying drawing:
Embodiment 1: a kind of inter-stage making-up air device (referring to Fig. 1) of new multistage compression centrifugal refigerating compressor, it comprises shell 1, transmission shaft 9, be provided with secondary exhaust volute 19 in the shell 1, transmission shaft 9 is provided with the air-breathing guide ring 11 of one-level, one-level impeller 5, sencond stage impeller 10, be provided with impeller spacer ring 8 between transmission shaft 9 upper level impellers 5 and the sencond stage impeller 10, the impeller spacer ring 8 outer interstage diaphragms 3 that are provided with, be provided with dividing plate secondary air intake passage 15 in the interstage diaphragm 3, be provided with cross-over bush 7 between impeller spacer ring 8 and the interstage diaphragm 3, be provided with one-level Diffuser 2 in the shell 1, form one-level exhaust passage 14 between one-level Diffuser 2 and the interstage diaphragm 3, the tail end of one-level exhaust passage 14 is circular-arc, form secondary exhaust passage 17 between interstage diaphragm 3 and the sencond stage impeller 10, be provided with one-level wheel cap sealing 4 between one-level Diffuser 2 and the one-level impeller 5, be provided with secondary wheel cap sealing 6 between interstage diaphragm 3 and the sencond stage impeller 10.Shell 1, one-level Diffuser 2 and the interstage diaphragm 3 common annular spaces that consist of are 360 ° of tonifying Qi air supply channels 20, and having consisted of width between one-level Diffuser 2 and the interstage diaphragm 3 is the straight trough section 18 of D, and D is 3cm-7cm.
During use, secondary exhaust volute 19 joins with gas exhaust piping, tonifying Qi air supply channel 20 joins with the tonifying Qi pipeline, gas enters from the suction port 13 of one-level impeller 5, after 5 compressions of one-level impeller, enter secondary air intake passage 15 by one-level exhaust passage 14, tonifying Qi enters tonifying Qi air supply channel 20, then after entering secondary air intake passage 15 by straight trough section 18, evenly mix with the one-level exhaust, intakeport 16 by sencond stage impeller 10 enters afterwards, after sencond stage impeller 10 compressions, enters the 19 rear discharges of secondary exhaust volute by secondary exhaust passage 17.
Claims (3)
1. the inter-stage making-up air device of new multistage compression centrifugal refigerating compressor, it comprises shell (1), transmission shaft (9), it is characterized in that being provided with in the shell (1) secondary exhaust volute (19), transmission shaft (9) is provided with the air-breathing guide ring of one-level (11), one-level impeller (5), sencond stage impeller (10), be provided with impeller spacer ring (8) between transmission shaft (9) upper level impeller (5) and the sencond stage impeller (10), the outer interstage diaphragm (3) that is provided with of impeller spacer ring (8), be provided with secondary air intake passage (15) in the interstage diaphragm (3), be provided with cross-over bush (7) between impeller spacer ring (8) and the interstage diaphragm (3), be provided with one-level Diffuser (2) in the shell (1), form one-level exhaust passage (14) between one-level Diffuser (2) and the interstage diaphragm (3), form secondary exhaust passage (17) between interstage diaphragm (3) and the sencond stage impeller (10), be provided with one-level wheel cap sealing (4) between one-level Diffuser (2) and the one-level impeller (5), be provided with secondary wheel cap sealing (6) between interstage diaphragm (3) and the sencond stage impeller (10), shell (1), the common annular space that consists of of one-level Diffuser (2) and interstage diaphragm (3) is 360 ° of tonifying Qi air supply channels (20), consists of straight trough section (18) between one-level Diffuser (2) and the interstage diaphragm (3).
2. a kind of new multistage according to claim 1 compresses the inter-stage making-up air device of centrifugal refigerating compressor, and the tail end that it is characterized in that described one-level exhaust passage (14) is circular-arc.
3. a kind of new multistage according to claim 1 compresses the inter-stage making-up air device of centrifugal refigerating compressor, and the width D that it is characterized in that described straight trough section (18) is 3cm-7 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105653274A CN103016409A (en) | 2012-12-24 | 2012-12-24 | Novel interstage air supplementing device of multi-stage compression centrifugal type refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105653274A CN103016409A (en) | 2012-12-24 | 2012-12-24 | Novel interstage air supplementing device of multi-stage compression centrifugal type refrigeration compressor |
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| CN103016409A true CN103016409A (en) | 2013-04-03 |
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| CN2012105653274A Pending CN103016409A (en) | 2012-12-24 | 2012-12-24 | Novel interstage air supplementing device of multi-stage compression centrifugal type refrigeration compressor |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179697A (en) * | 2014-08-07 | 2014-12-03 | 珠海格力电器股份有限公司 | Multistage compressor and air conditioner |
| WO2015027825A1 (en) * | 2013-08-26 | 2015-03-05 | 珠海格力电器股份有限公司 | Multi-stage centrifugal compressor and air conditioning unit |
| CN104454652A (en) * | 2014-10-16 | 2015-03-25 | 珠海格力电器股份有限公司 | Volute structure, centrifugal compressor and refrigeration equipment |
| CN105114327A (en) * | 2015-09-15 | 2015-12-02 | 珠海格力电器股份有限公司 | Multistage compressor and have its refrigerating system |
| CN105240320A (en) * | 2015-10-15 | 2016-01-13 | 珠海格力电器股份有限公司 | Air supplementing structure of centrifugal compressor and compressor |
| CN106762841A (en) * | 2016-12-05 | 2017-05-31 | 珠海格力电器股份有限公司 | Reflux device and diffuser integrated structure and centrifugal compressor |
| CN106837528A (en) * | 2017-01-23 | 2017-06-13 | 哈尔滨工程大学 | Sequential supercharged diesel engine lubrication sealing structure and its control method based on tonifying Qi |
| CN107165869A (en) * | 2017-06-13 | 2017-09-15 | 珠海格力电器股份有限公司 | Compressor tonifying qi structure and compressor |
| CN107435621A (en) * | 2017-08-17 | 2017-12-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic suspension compressor and its clearance adjustment method |
| CN108708862A (en) * | 2018-03-30 | 2018-10-26 | 重庆美的通用制冷设备有限公司 | The compression assembly and centrifugal compressor of centrifugal compressor |
| CN108730235A (en) * | 2018-05-04 | 2018-11-02 | 重庆美的通用制冷设备有限公司 | The casing assembly and centrifugal compressor of centrifugal compressor |
| WO2020207509A1 (en) * | 2019-04-09 | 2020-10-15 | 青岛海尔智能技术研发有限公司 | Gas supplementation apparatus and compressor |
| WO2021030319A1 (en) * | 2019-08-12 | 2021-02-18 | Johnson Controls Technology Company | Compressor with optimized interstage flow inlet |
| CN112832875A (en) * | 2021-02-03 | 2021-05-25 | 东方电气集团东方汽轮机有限公司 | Steam supplementing cavity structure of steam turbine cylinder |
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| CN203009399U (en) * | 2012-12-24 | 2013-06-19 | 烟台蓝德空调工业有限责任公司 | Novel interstage air supplement device of multistage compression centrifugal refrigerating compressor |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027825A1 (en) * | 2013-08-26 | 2015-03-05 | 珠海格力电器股份有限公司 | Multi-stage centrifugal compressor and air conditioning unit |
| CN104179697A (en) * | 2014-08-07 | 2014-12-03 | 珠海格力电器股份有限公司 | Multistage compressor and air conditioner |
| CN104454652B (en) * | 2014-10-16 | 2017-07-25 | 珠海格力电器股份有限公司 | Volute structure, centrifugal compressor and refrigeration equipment |
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| WO2016058379A1 (en) * | 2014-10-16 | 2016-04-21 | 珠海格力电器股份有限公司 | Volute structure for use in centrifugal compressor, centrifugal compressor, and refrigeration device |
| CN105114327A (en) * | 2015-09-15 | 2015-12-02 | 珠海格力电器股份有限公司 | Multistage compressor and have its refrigerating system |
| US20180306202A1 (en) * | 2015-10-15 | 2018-10-25 | Gree Electric Appliances, Inc. Of Zhuhai | Centrifugal compressor gas-supplementing structure and compressor |
| US10544799B2 (en) * | 2015-10-15 | 2020-01-28 | Gree Electric Appliances, Inc. Of Zhuhai | Centrifugal compressor gas-supplementing structure and compressor |
| WO2017063576A1 (en) * | 2015-10-15 | 2017-04-20 | 珠海格力电器股份有限公司 | Centrifugal compressor air-supplement structure and compressor |
| CN105240320A (en) * | 2015-10-15 | 2016-01-13 | 珠海格力电器股份有限公司 | Air supplementing structure of centrifugal compressor and compressor |
| CN105240320B (en) * | 2015-10-15 | 2019-01-22 | 珠海格力电器股份有限公司 | Air supplementing structure of centrifugal compressor and compressor |
| CN106762841A (en) * | 2016-12-05 | 2017-05-31 | 珠海格力电器股份有限公司 | Reflux device and diffuser integrated structure and centrifugal compressor |
| US11002288B2 (en) | 2016-12-05 | 2021-05-11 | Gree Electric Appliances, Inc. Of Zhuhai | Integrated structure of refluxer and pressure diffuser, and centrifugal compressor |
| CN106762841B (en) * | 2016-12-05 | 2020-06-30 | 珠海格力电器股份有限公司 | Reflux device and diffuser integrated structure and centrifugal compressor |
| CN106837528A (en) * | 2017-01-23 | 2017-06-13 | 哈尔滨工程大学 | Sequential supercharged diesel engine lubrication sealing structure and its control method based on tonifying Qi |
| CN106837528B (en) * | 2017-01-23 | 2019-06-07 | 哈尔滨工程大学 | Sequential supercharged diesel engine lubrication sealing structure and its control method based on tonifying Qi |
| CN107165869A (en) * | 2017-06-13 | 2017-09-15 | 珠海格力电器股份有限公司 | Compressor tonifying qi structure and compressor |
| CN107435621A (en) * | 2017-08-17 | 2017-12-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic suspension compressor and its clearance adjustment method |
| CN108708862A (en) * | 2018-03-30 | 2018-10-26 | 重庆美的通用制冷设备有限公司 | The compression assembly and centrifugal compressor of centrifugal compressor |
| CN108730235A (en) * | 2018-05-04 | 2018-11-02 | 重庆美的通用制冷设备有限公司 | The casing assembly and centrifugal compressor of centrifugal compressor |
| WO2020207509A1 (en) * | 2019-04-09 | 2020-10-15 | 青岛海尔智能技术研发有限公司 | Gas supplementation apparatus and compressor |
| WO2021030319A1 (en) * | 2019-08-12 | 2021-02-18 | Johnson Controls Technology Company | Compressor with optimized interstage flow inlet |
| CN114375370A (en) * | 2019-08-12 | 2022-04-19 | 江森自控泰科知识产权控股有限责任合伙公司 | Compressor with optimized interstage flow inlet |
| CN112832875A (en) * | 2021-02-03 | 2021-05-25 | 东方电气集团东方汽轮机有限公司 | Steam supplementing cavity structure of steam turbine cylinder |
| CN112832875B (en) * | 2021-02-03 | 2022-08-30 | 东方电气集团东方汽轮机有限公司 | Steam supplementing cavity structure of steam turbine cylinder |
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Application publication date: 20130403 |