CN202250938U - Multi-stage refrigeration compressor and middle gas supplementation structure thereof - Google Patents
Multi-stage refrigeration compressor and middle gas supplementation structure thereof Download PDFInfo
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- CN202250938U CN202250938U CN2011204097879U CN201120409787U CN202250938U CN 202250938 U CN202250938 U CN 202250938U CN 2011204097879 U CN2011204097879 U CN 2011204097879U CN 201120409787 U CN201120409787 U CN 201120409787U CN 202250938 U CN202250938 U CN 202250938U
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Abstract
The utility model provides a middle gas supplementation structure of a multi-stage refrigeration compressor. The middle gas supplementation structure comprises a gas supplementation mechanism, wherein the gas supplementation mechanism comprises a first air inlet channel, a second air inlet channel and a mixed cavity; the first air inlet channel and the second air inlet channel are respectively communicated with the first end of the mixed cavity; the first air inlet channel is connected with an economizer of the multi-stage refrigeration compressor; the second air inlet channel is connected with an outlet of one impeller of the multi-stage refrigeration compressor; and the second end of the mixed cavity is connected with an inlet of a next-stage impeller of the impeller. According to the middle gas supplementation structure of the multi-stage refrigeration compressor, low-temperature refrigerating fluid steam obtained by flash evaporation in the economizer and high-temperature refrigerating fluid steam from certain-stage impeller are fully and evenly mixed so as to lower air inlet temperature of the next-stage impeller which enters the certain-stage impeller, and the efficiency of the compressor is improved.
Description
Technical field
The utility model relates to the refrigeration compressor field, more specifically, relates to a kind of multi-stage refrigerating compressor and middle gas supplementary structure thereof.
Background technique
Refrigeration compressor of the prior art (particularly centrifugal refrigeration compressor) adopts the above impeller of two-stage usually in order to reach higher pressure ratio.Further, in order to improve cycle efficiency, adopt the endless form of band economizer usually.In circulation, the compression process of refrigeration agent is divided into two stages and carries out (being example with the both stage impellers): at first, come the low pressure refrigerant vapor of from evaporator drier to be compressed to intermediate pressure through first order impeller; Then, steam is obtained the low-temperature refrigerant steam cooling from the economizer shwoot, gets into then and further compresses in the next stage impeller until reaching condensing pressure, enters condenser at last.In the endless form in the prior art; Normally shwoot is obtained low-temperature refrigerant steam and directly introduce the inner main runner of next stage impeller so that high temperature refrigerant steam is cooled off; But can cause adverse effect to the airflow homogeneity of this next stage impeller eye like this; Cause the mobile non-uniform phenomenon that this next stage impeller is inner, and can cause the not high problem of compressor efficiency.
The model utility content
The utility model aims to provide a kind of multi-stage refrigerating compressor and middle gas supplementary structure thereof, with the inner refrigerant vapour of secondary impeller of the multi-stage refrigerating compressor that solves existing technology flow non-uniform phenomenon and the low problem of compressor efficiency.
For solving the problems of the technologies described above, according to an aspect of the utility model, a kind of middle gas supplementary structure of multi-stage refrigerating compressor is provided, comprising: air supply mechanism, air supply mechanism comprise first gas-entered passageway, second gas-entered passageway, mixing chamber; First gas-entered passageway and second gas-entered passageway are communicated with first end of mixing chamber respectively; First gas-entered passageway is connected with the economizer of multi-stage refrigerating compressor; Second gas-entered passageway is connected with the outlet of an impeller of multi-stage refrigerating compressor, and second end of mixing chamber is connected with the import of the next stage impeller of this impeller.
Further, air supply mechanism is arranged on the position between this impeller and the next stage impeller.
Further, air supply mechanism comprises the Embedded Division that expands stream device and annular; Expansion is flowed device and is comprised that annular expands chute, and at least a portion of Embedded Division places annular expansion chute, between expansion stream device and Embedded Division, forms the gap, and second gas-entered passageway and mixing chamber are formed in the gap successively.
Further, first gas-entered passageway is arranged on the Embedded Division.
Further, first gas-entered passageway is a ring-type.
Further, the section area of first gas-entered passageway is along successively decreasing towards the direction of mixing chamber.
Further, the export department of first gas-entered passageway has annular gap, and first gas-entered passageway is communicated with through annular gap with mixing chamber.
Further, the inwall of first gas-entered passageway is streamlined, and first gas-entered passageway comprises a linearly extended entrance part in edge, an export department and a kink that connects into oral area and export department along curve extension.
Further, first gas-entered passageway is connected through pipeline with economizer, and pipeline is provided with modulating valve.
An aspect according to the utility model provides a kind of multi-stage refrigerating compressor, and it comprises multi-stage impeller, between the adjacent both stage impellers at least one place, is provided with above-mentioned middle gas supplementary structure.
The low-temperature refrigerant steam that the utility model gets shwoot in the economizer fully mixes with high temperature refrigerant steam from certain one-level impeller, thereby has reduced the intake temperature of the next stage impeller that gets into this certain one-level impeller, and improves compressor efficiency.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of the utility model.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As an aspect of the utility model, the utility model provides a kind of middle gas supplementary structure of multi-stage refrigerating compressor.As shown in Figure 1, this centre gas supplementary structure comprises: air supply mechanism 4, air supply mechanism 4 comprise first gas-entered passageway 413, second gas-entered passageway 43, mixing chamber 44; Wherein, first gas-entered passageway 413 and second gas-entered passageway 43 are communicated with first end of mixing chamber 44 respectively; First gas-entered passageway 413 is connected with the economizer 1 of multi-stage refrigerating compressor; Second gas-entered passageway 43 is connected with the outlet of an impeller 5 of multi-stage refrigerating compressor, and second end of mixing chamber 44 is connected with the import of the next stage impeller 3 of this impeller 5.As shown in Figure 1; Be provided with certain one-level impeller 5 of multi-stage refrigerating compressor in a side of air supply mechanism 4; Be provided with the next stage impeller 3 of this certain one-level impeller 5 at the opposite side of air supply mechanism 4; Be that air supply mechanism 4 is arranged between the both stage impellers, therefore enough installing spaces arranged, possibly increase the axial distance between the both stage impellers a little for guaranteeing.Because first gas-entered passageway 413 (when particularly this first gas-entered passageway 413 is for annular housing) has bigger flow area; Thereby can effectively reduce the flow velocity of incoming flow; Mobile, the pressure distribution of incoming flow in first gas-entered passageway is tending towards evenly, thereby avoids evenly flowing of mixed refrigerant vapour in the mixing chamber 44 caused adverse effect.Therefore; The low-temperature refrigerant steam that this centre gas supplementary structure can get shwoot in the economizer fully mixes with the high temperature refrigerant steam from this certain one-level impeller; Thereby reduced the intake temperature that gets into this next stage impeller, and improved compressor efficiency (can compressor efficiency be improved about 5%).Especially, the gas supplementary structure in the utility model is applicable to bipolar or multistage compressor (particularly multistage centrifugal compressor).
As shown in Figure 1, preferably, air supply mechanism 4 comprises the Embedded Division 41 that expands stream device 42 and annular; Expand stream device 42 and comprise that annular expands chute, at least a portion of Embedded Division 41 places annular to expand chute, expand between stream device 42 and the Embedded Division 41 formation gap 46, the second gas-entered passageways 43, mixing chamber 44 is formed in the gap 46 successively.Preferably, first gas-entered passageway 413 is arranged on the Embedded Division 41, thereby makes Embedded Division 41 be divided into the first wall 411 and second wall 412 by first gas-entered passageway 413, between the first wall 411 and second wall 412, forms this first gas-entered passageway 413.Preferably, the inwall of first gas-entered passageway 413 is streamlined, and first gas-entered passageway 413 comprises the linearly extended entrance part in edge 415, an export department 414 and a kink that connects into oral area 415 and export department along curve extension; Especially, the section area of first gas-entered passageway 413 is along successively decreasing towards the direction of mixing chamber 44, and further, first gas-entered passageway 413 is ring-types.Preferably; Said streamlined employing fluid analysis software analysis design; But adopt the flowing velocity and the direction of fairshaped inwall standard fluid; Make the low-temperature refrigerant steam that shwoot gets in the economizer flow into mixing chamber 44, thereby reduced low-temperature refrigerant steam and the impact loss of high temperature refrigerant steam when mixing with the less angle that becomes a mandarin.Through above-mentioned reasonable flow channel design, can reach even tonifying Qi and the purpose of the loss that cuts down the consumption of energy.
During use, can earlier Embedded Division 41 be placed a side that expands stream device 42, and then above-mentioned next stage impeller 3 and expansion stream device 42 are combined, expand in the chute thereby Embedded Division 41 is installed to the annular that expands stream device 42.
Preferably; The export department 414 of first gas-entered passageway 413 has annular gap, and first gas-entered passageway 413 and mixing chamber 44 are communicated with through annular gap, owing to adopted narrower annular gap; Thereby can improve the flowing velocity of fluid, make the mobile change of fluid more even.As shown in Figure 1; The low-temperature refrigerant steam that shwoot gets in the economizer 1 is got in first gas-entered passageway 413 by the entrance part 415 of first gas-entered passageway 413; Simultaneously; High temperature refrigerant steam from this certain one-level impeller 5 gets into air supply mechanism 4 by second gas-entered passageway 43, and low-temperature refrigerant steam and high temperature refrigerant steam mix at the first end place of mixing chamber 44 subsequently, go into this next stage impeller 3 via second end of mixing chamber 44 then.
Preferably; First gas-entered passageway 413 and economizer 1 are connected through pipeline; This pipeline is provided with modulating valve 2; It is used to control get in the middle of the flow from the low-temperature refrigerant steam of economizer of gas supplementary structure, thereby the intake temperature of the impeller of control next stage impeller 3, to adapt to designing requirement.
As another aspect of the utility model, the utility model provides a kind of multi-stage refrigerating compressor, and it comprises multi-stage impeller, between the adjacent both stage impellers at least one place, is provided with the middle gas supplementary structure among above-mentioned each embodiment.
The low-temperature refrigerant steam that the utility model gets shwoot in the economizer fully mixes with high temperature refrigerant steam from certain one-level impeller, thereby has reduced the intake temperature of the next stage impeller that gets into this certain one-level impeller, and improves compressor efficiency.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. the middle gas supplementary structure of a multi-stage refrigerating compressor is characterized in that, comprising:
Air supply mechanism (4), said air supply mechanism (4) comprise first gas-entered passageway (413), second gas-entered passageway (43), mixing chamber (44);
Said first gas-entered passageway (413) and second gas-entered passageway (43) are communicated with first end of said mixing chamber (44) respectively;
Said first gas-entered passageway (413) is connected with the economizer (1) of said multi-stage refrigerating compressor; Said second gas-entered passageway (43) is connected with the outlet of an impeller (5) of said multi-stage refrigerating compressor, and second end of said mixing chamber (44) is connected with the import of the next stage impeller (3) of this said impeller (5).
2. gas supplementary structure in the middle of according to claim 1 is characterized in that said air supply mechanism (4) is arranged on the position between this said impeller (5) and the said next stage impeller (3).
3. gas supplementary structure in the middle of according to claim 1 is characterized in that, said air supply mechanism (4) comprises the Embedded Division (41) that expands stream device (42) and annular; Said expansion stream device (42) comprises that annular expands chute; At least a portion of said Embedded Division (41) places said annular to expand chute; Between said expansion stream device (42) and Embedded Division (41), form gap (46), said second gas-entered passageway (43) and mixing chamber (44) are formed in the said gap (46) successively.
4. gas supplementary structure in the middle of according to claim 3 is characterized in that said first gas-entered passageway (413) is arranged on the said Embedded Division (41).
5. gas supplementary structure in the middle of according to claim 3 is characterized in that said first gas-entered passageway (413) is a ring-type.
6. gas supplementary structure in the middle of according to claim 3 is characterized in that, the section area of said first gas-entered passageway (413) is along successively decreasing towards the direction of said mixing chamber (44).
7. gas supplementary structure in the middle of according to claim 3 is characterized in that the export department (414) of said first gas-entered passageway (413) has annular gap, and said first gas-entered passageway (413) is communicated with through said annular gap with said mixing chamber (44).
8. gas supplementary structure in the middle of according to claim 3; It is characterized in that; The inwall of said first gas-entered passageway (413) is streamlined, and said first gas-entered passageway (413) comprises a linearly extended entrance part in edge (415), an export department along curve extension (414) and a kink that connects said entrance part (415) and export department (414).
9. according to each described middle gas supplementary structure among the claim 1-8, it is characterized in that said first gas-entered passageway (413) is connected through pipeline with said economizer (1), said pipeline is provided with modulating valve (2).
10. multi-stage refrigerating compressor, it comprises multi-stage impeller, it is characterized in that, between the said impeller of the adjacent two-stage at least one place, be provided with among the claim 1-9 each described in the middle of gas supplementary structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204097879U CN202250938U (en) | 2011-10-24 | 2011-10-24 | Multi-stage refrigeration compressor and middle gas supplementation structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204097879U CN202250938U (en) | 2011-10-24 | 2011-10-24 | Multi-stage refrigeration compressor and middle gas supplementation structure thereof |
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| Publication Number | Publication Date |
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| CN202250938U true CN202250938U (en) | 2012-05-30 |
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| CN2011204097879U Withdrawn - After Issue CN202250938U (en) | 2011-10-24 | 2011-10-24 | Multi-stage refrigeration compressor and middle gas supplementation structure thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016409A (en) * | 2012-12-24 | 2013-04-03 | 烟台蓝德空调工业有限责任公司 | Novel interstage air supplementing device of multi-stage compression centrifugal type refrigeration compressor |
| CN103062077A (en) * | 2011-10-24 | 2013-04-24 | 珠海格力电器股份有限公司 | Multi-stage refrigeration compressor and middle re-inflating structure thereof |
| CN104179697A (en) * | 2014-08-07 | 2014-12-03 | 珠海格力电器股份有限公司 | Multi-stage compressor and air conditioner |
| CN105114327A (en) * | 2015-09-15 | 2015-12-02 | 珠海格力电器股份有限公司 | Multi-stage compressor and refrigerating system provided with same |
| CN105370626A (en) * | 2014-08-07 | 2016-03-02 | 重庆美的通用制冷设备有限公司 | A backflow device for a centrifugal compressor and a centrifugal compressor with the same |
| CN105864041A (en) * | 2016-05-24 | 2016-08-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner with same |
| US20180306202A1 (en) * | 2015-10-15 | 2018-10-25 | Gree Electric Appliances, Inc. Of Zhuhai | Centrifugal compressor gas-supplementing structure and compressor |
| 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 |
| CN111102214A (en) * | 2018-10-29 | 2020-05-05 | 丹佛斯有限公司 | Centrifugal turbocompressor with gas flow path comprising a relaxation chamber |
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2011
- 2011-10-24 CN CN2011204097879U patent/CN202250938U/en not_active Withdrawn - After Issue
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062077A (en) * | 2011-10-24 | 2013-04-24 | 珠海格力电器股份有限公司 | Multi-stage refrigeration compressor and middle re-inflating structure thereof |
| CN103062077B (en) * | 2011-10-24 | 2014-05-07 | 珠海格力电器股份有限公司 | Multi-stage refrigeration compressor and middle re-inflating structure thereof |
| CN103016409A (en) * | 2012-12-24 | 2013-04-03 | 烟台蓝德空调工业有限责任公司 | Novel interstage air supplementing device of multi-stage compression centrifugal type refrigeration compressor |
| CN105370626A (en) * | 2014-08-07 | 2016-03-02 | 重庆美的通用制冷设备有限公司 | A backflow device for a centrifugal compressor and a centrifugal compressor with the same |
| WO2016019689A1 (en) * | 2014-08-07 | 2016-02-11 | 珠海格力电器股份有限公司 | Multi-stage compressor and air conditioner |
| CN104179697A (en) * | 2014-08-07 | 2014-12-03 | 珠海格力电器股份有限公司 | Multi-stage compressor and air conditioner |
| CN105114327A (en) * | 2015-09-15 | 2015-12-02 | 珠海格力电器股份有限公司 | Multi-stage compressor and refrigerating system provided with same |
| 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 |
| CN105864041A (en) * | 2016-05-24 | 2016-08-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner with same |
| CN105864041B (en) * | 2016-05-24 | 2017-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and there is its air conditioner |
| 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 |
| CN111102214A (en) * | 2018-10-29 | 2020-05-05 | 丹佛斯有限公司 | Centrifugal turbocompressor with gas flow path comprising a relaxation chamber |
| CN111102214B (en) * | 2018-10-29 | 2022-02-08 | 丹佛斯有限公司 | Centrifugal turbocompressor with gas flow path comprising a relaxation chamber |
| US11572880B2 (en) | 2018-10-29 | 2023-02-07 | Danfoss A/S | Centrifugal turbo-compressor having a gas flow path including a relaxation chamber |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20140507 |
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| RGAV | Abandon patent right to avoid regrant |