CN103807215B - Multistage centrifugal compressor and cold water type air conditioning unit with same - Google Patents
Multistage centrifugal compressor and cold water type air conditioning unit with same Download PDFInfo
- Publication number
- CN103807215B CN103807215B CN201210442890.2A CN201210442890A CN103807215B CN 103807215 B CN103807215 B CN 103807215B CN 201210442890 A CN201210442890 A CN 201210442890A CN 103807215 B CN103807215 B CN 103807215B
- Authority
- CN
- China
- Prior art keywords
- centrifugal compressor
- multistage centrifugal
- inner chamber
- return channel
- supporting element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 238000004378 air conditioning Methods 0.000 title abstract 4
- 230000008676 import Effects 0.000 claims description 7
- 238000010992 reflux Methods 0.000 abstract 2
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a multistage centrifugal compressor and a cold water type air conditioning unit with the same. The multistage centrifugal compressor comprises a shell (10) and a reflux device (20) arranged inside the shell (10), a first inner cavity (11) is formed in the inner wall of the shell (10), a second inner cavity (21) matched with the first inner cavity (11) is arranged on the reflux device (20), the first inner cavity (11) is communicated with the second inner cavity (21), and the first inner cavity (11) and the second inner cavity (21) form an air supplementing cavity of the multistage centrifugal compressor. Wherein, cold water formula air conditioning unit includes aforementioned multistage centrifugal compressor. The invention aims to provide a multistage centrifugal compressor and a cold water type air conditioning unit with the same, and aims to solve the problem that the compressor in the prior art is low in efficiency due to the fact that the volume of an air replenishing cavity is small.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, in particular to a kind of multistage centrifugal compressor and the cold water formula air-conditioner set with it.
Background technique
Return channel 10 ' the structure generally used in current multistage centrifugal compressor, specifically shown in Figure 1, the cavity using return channel 10 ' inner as tonifying Qi chamber 20 ' more.But because the finite volume of return channel 10 ' own, the volume in tonifying Qi chamber 20 ' just can not do greatly, cause two-stage compression tonifying Qi even not, reduce compressor efficiency.
Summary of the invention
The present invention aims to provide a kind of multistage centrifugal compressor and has its cold water formula air-conditioner set, to solve in prior art compressor due to the little problem causing compressor efficiency low of tonifying Qi chamber volume.
To achieve these goals, the invention provides a kind of multistage centrifugal compressor, comprise housing and the return channel being arranged on enclosure interior, the inwall of housing is formed with the first inner chamber, return channel is provided with the second inner chamber coordinated with the first inner chamber, first inner chamber and the second inner space, the first inner chamber and the second inner chamber form the tonifying Qi chamber of multistage centrifugal compressor.
Further, housing is fixedly connected with the sidewall of return channel, is provided with gasket seal between housing and the sidewall of return channel.
Further, return channel comprises the attachment post be arranged in the second inner chamber, to strengthen the intensity of return channel on the inwall that attachment post is connected to the second inner chamber.
Further, attachment post is have multiple and along the second inner chamber inwall circumference to be uniformly distributed.
Further, multistage centrifugal compressor also comprises impeller, labyrinth seal part and supporting element, labyrinth seal part is for the high low pressure region of the import and outlet that intercept impeller, supporting element is used for fixed fingers Sealing, supporting element arranges and coordinates with labyrinth seal part the support surface abutted, support surface is positioned at the side of supporting element near impeller inlet, and labyrinth seal part is arranged on supporting element near the side of impeller inlet and is arranged on support surface.
Further, supporting element and return channel are structure as a whole.
According to a further aspect in the invention, provide a kind of cold water formula air-conditioner set, comprise above-mentioned multistage centrifugal compressor.
Apply technological scheme of the present invention, multistage centrifugal compressor, comprise housing and the return channel being arranged on enclosure interior, the inwall of housing is formed with the first inner chamber, return channel is provided with the second inner chamber coordinated with the first inner chamber, first inner chamber and the second inner space, the first inner chamber and the second inner chamber form the tonifying Qi chamber of multistage centrifugal compressor.When not changing the volume of return channel own, transform the tonifying Qi chamber of return channel as open the second inner chamber, position corresponding with return channel on housing is provided with the first cavity, first cavity and the second cavity form tonifying Qi chamber jointly, the volume in such tonifying Qi chamber is just significantly expanded, make tonifying Qi air-flow more even, effectively improve compressor efficiency.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the internal structure schematic diagram of multistage centrifugal compressor in prior art;
Fig. 2 shows the internal structure schematic diagram of the embodiment of multistage centrifugal compressor of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 2, the multistage centrifugal compressor of the present embodiment comprises housing 10 and is arranged on the return channel 20 of housing 10 inside, the inwall of housing 10 is formed with the first inner chamber 11, return channel 20 is provided with the second inner chamber 21 coordinated with the first inner chamber 11, first inner chamber 11 is communicated with the second inner chamber 21, and the first inner chamber 11 and the second inner chamber 21 form the tonifying Qi chamber of multistage centrifugal compressor.
When not changing the volume of return channel own, transform the former tonifying Qi chamber of return channel as open the second inner chamber, position corresponding with return channel on housing is provided with the first cavity, first cavity and the second cavity form tonifying Qi chamber jointly, the volume in such tonifying Qi chamber is just significantly expanded, make tonifying Qi air-flow more even, effectively improve compressor efficiency.
Housing 10 is fixedly connected with the sidewall of return channel 20, is provided with gasket seal between the sidewall of housing 10 and return channel 20.Gasket seal is used for high pressure spiral case 40 and tonifying Qi chamber to keep apart, and prevents air loss.High pressure spiral case is a part for housing, and before being positioned at the relief opening of centrifugal compressor, gas is collected in its effect, is pressure potential energy by the speed kinetic transformation of the high speed refrigerant gas done work by impeller, thus improves the pressure of gas, plays the effect of diffusion.Because pressure is comparatively large, if seal bad, the tonifying Qi chamber of pressurized gas from slit flow to low pressure can be made herein.
Preferably, return channel 20 comprises the attachment post 22 be arranged in the second inner chamber 21, to strengthen the intensity of return channel 20 on the inwall that attachment post 22 is connected to the second inner chamber 21.Attachment post 22 is provided with multiple and along the second inner chamber 21 inwall circumference and is uniformly distributed.
The multistage centrifugal compressor of the present embodiment also comprises impeller 51, labyrinth seal part 52 and supporting element 53, labyrinth seal part 52 is for the high low pressure region of the import and outlet that intercept impeller 51, supporting element 53 is for fixed fingers Sealing 52, supporting element 53 arranges and coordinates with labyrinth seal part 52 support surface abutted, support surface is positioned at the side of supporting element 53 near impeller 51 import, and labyrinth seal part 52 is arranged on supporting element 53 near the side of impeller 51 import and is arranged on support surface.Supporting element 53 and return channel 20 are structure as a whole.
By labyrinth seal part is arranged on the side of supporting element near impeller inlet, can assemble separately labyrinth seal part and supporting element like this.Because labyrinth seal part is very little relative to weight supporting element, this reduces the difficulty of assembling, avoid the possibility of colliding with other objects such as enclosings cover for impeller in assembly process; Simultaneously, because the change of assembly method, gap between labyrinth seal part and impeller outer edge can use clearance gauge to carry out measuring and adjusting, so just can ensure in the process of plant running, serious friction can not occur between labyrinth seal part and impeller causes the comb of labyrinth seal part to damage, and reduces the inner air loss of compressor.
The invention provides a kind of embodiment of cold water formula air-conditioner set, in the present embodiment, cold water formula air-conditioner set comprises the multistage centrifugal compressor of above-described embodiment, and the effect of the multistage centrifugal compressor in the present embodiment is higher.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a multistage centrifugal compressor, comprise housing (10) and be arranged on the inner return channel (20) of described housing (10), it is characterized in that, the inwall of described housing (10) is formed with the first inner chamber (11), described return channel (20) is provided with the second inner chamber (21) coordinated with described first inner chamber (11), described first inner chamber (11) is communicated with described second inner chamber (21), and described first inner chamber (11) and described second inner chamber (21) form the tonifying Qi chamber of described multistage centrifugal compressor.
2. multistage centrifugal compressor according to claim 1, is characterized in that, described housing (10) is fixedly connected with the sidewall of described return channel (20), is provided with gasket seal between the sidewall of described housing (10) and described return channel (20).
3. multistage centrifugal compressor according to claim 1, it is characterized in that, described return channel (20) comprises the attachment post (22) be arranged in described second inner chamber (21), to strengthen the intensity of described return channel (20) on the inwall that described attachment post (22) is connected to described second inner chamber (21).
4. multistage centrifugal compressor according to claim 3, is characterized in that, described attachment post (22) is uniformly distributed for there being multiple and along described second inner chamber (21) inwall circumference.
5. multistage centrifugal compressor according to claim 1, it is characterized in that, also comprise impeller (51), labyrinth seal part (52) and supporting element (53), described labyrinth seal part (52) is for the high low pressure region of the import and outlet that intercept described impeller (51), described supporting element (53) is for fixing described labyrinth seal part (52), described supporting element (53) arranges and coordinates with described labyrinth seal part (52) support surface abutted, described support surface is positioned at the side of described supporting element (53) near described impeller (51) import, described labyrinth seal part (52) is arranged on the side of close described impeller (51) import of described supporting element (53) and is arranged on described support surface.
6. multistage centrifugal compressor according to claim 5, is characterized in that, described supporting element (53) and described return channel (20) are structure as a whole.
7. a cold water formula air-conditioner set, is characterized in that, comprises the multistage centrifugal compressor according to any one of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442890.2A CN103807215B (en) | 2012-11-07 | 2012-11-07 | Multistage centrifugal compressor and cold water type air conditioning unit with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442890.2A CN103807215B (en) | 2012-11-07 | 2012-11-07 | Multistage centrifugal compressor and cold water type air conditioning unit with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103807215A CN103807215A (en) | 2014-05-21 |
| CN103807215B true CN103807215B (en) | 2015-12-16 |
Family
ID=50704470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210442890.2A Active CN103807215B (en) | 2012-11-07 | 2012-11-07 | Multistage centrifugal compressor and cold water type air conditioning unit with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103807215B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578713A (en) * | 2018-06-07 | 2019-12-17 | 浙江盾安机电科技有限公司 | Volute structure and centrifugal compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190440A (en) * | 1991-03-11 | 1993-03-02 | Dresser-Rand Company | Swirl control labyrinth seal |
| CN1987119A (en) * | 2005-12-23 | 2007-06-27 | 财团法人工业技术研究院 | Compressor jet flow path structure |
| CN202867345U (en) * | 2012-11-07 | 2013-04-10 | 珠海格力电器股份有限公司 | Multistage centrifugal compressor and cold water type air conditioning unit with same |
-
2012
- 2012-11-07 CN CN201210442890.2A patent/CN103807215B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190440A (en) * | 1991-03-11 | 1993-03-02 | Dresser-Rand Company | Swirl control labyrinth seal |
| CN1987119A (en) * | 2005-12-23 | 2007-06-27 | 财团法人工业技术研究院 | Compressor jet flow path structure |
| CN202867345U (en) * | 2012-11-07 | 2013-04-10 | 珠海格力电器股份有限公司 | Multistage centrifugal compressor and cold water type air conditioning unit with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103807215A (en) | 2014-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108643979B (en) | Supercritical carbon dioxide closed cycle turbo compressor | |
| WO2016019689A1 (en) | Multi-stage compressor and air conditioner | |
| KR20140047566A (en) | Thin-type outside-expelling-and-inside-circulating-style smoke exhaust ventilator | |
| JP2013113236A (en) | Oil-free screw compressor | |
| CN103696844A (en) | Power generating unit | |
| CN104806560A (en) | Sealing part and centrifugal compressor | |
| CN103807215B (en) | Multistage centrifugal compressor and cold water type air conditioning unit with same | |
| JP6051271B2 (en) | Oil-free screw compressor | |
| CN202867325U (en) | Centrifugal compressor and cold water type air conditioning unit with same | |
| CN202867345U (en) | Multistage centrifugal compressor and cold water type air conditioning unit with same | |
| CN109026716A (en) | A kind of cooling system of high pressure screw air compressor | |
| CN103807204A (en) | Centrifugal compressor and cold water type air conditioning unit with same | |
| TWI276743B (en) | Fan and fan housing with air-guiding static blades | |
| CN202470245U (en) | Portable air conditioner | |
| CN103307667A (en) | Portable air conditioner | |
| CN203756586U (en) | Sealing part and centrifugal compressor | |
| CN204902046U (en) | Split -type air conditioner off -premises station | |
| CN104251211B (en) | Compressor | |
| CN204140427U (en) | Rotary compressor | |
| CN104235038A (en) | Integrated electric centrifugal ventilator | |
| CN204025095U (en) | Centrifugal compressor and air conditioning system with same | |
| CN208702702U (en) | A kind of cooling system of high pressure screw air compressor | |
| CN204476760U (en) | Pump body structure and compressor | |
| CN208966584U (en) | The pump housing, horizontal compressor | |
| CN107580446B (en) | Air duct structure capable of freely switching air outlet direction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |