CN204705068U - A kind of fully-closed vortex twin-stage low temperature unit - Google Patents
A kind of fully-closed vortex twin-stage low temperature unit Download PDFInfo
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- CN204705068U CN204705068U CN201520392284.3U CN201520392284U CN204705068U CN 204705068 U CN204705068 U CN 204705068U CN 201520392284 U CN201520392284 U CN 201520392284U CN 204705068 U CN204705068 U CN 204705068U
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- compressor
- mixing drum
- intermediate mixing
- stage
- split
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Abstract
The utility model relates to a kind of fully-closed vortex twin-stage low temperature unit, comprise electric cabinet, two stage compressor, a split-compressor, reservoir and oil eliminator, the blast pipe of described two stage compressor is communicated with the collector of horizontally set respectively, this collector is coaxially connected with intermediate mixing drum, this intermediate mixing drum will pass through the air entry being vertically communicated with the pressure duct input split-compressor arranged after the high-pressure gaseous refrigerant hybrid cooling of input, the exhaust outlet of this split-compressor connects the input port of oil eliminator, the delivery outlet of this oil eliminator connects condenser, described intermediate mixing drum connects charge air cooler, described stage compressor and split-compressor are scroll compressor, described intermediate mixing drum is arranged on the rear portion of I and II compressor.The utility model uses at making original unit that can only use evaporating temperature-20 DEG C expand to evaporating temperature-40 DEG C, and Energy Efficiency Ratio (COP) reaches 3.87, and efficiency improves 30% compared with single-stage refrigeration unit.
Description
Technical field
The utility model belongs to refrigeration technology field, especially a kind of fully-closed vortex twin-stage low temperature unit.
Background technology
In existing cryogenic freezing cold storage refrigeration system, usual use single-stage compressor, but single-stage compressor freezes when dragging down temperature, scope is little, compression ratio is high and be often in limiting condition run, greatly reduce the compressor life-span like this, improve maintenance rate, and power consumption is large.
Also there are the following problems for traditional low temperature unit: 1, the appearance and size of Spiral Lobe Refrigeration Compressor is large, takies larger space.2, the intermediate mixing drum of unit is generally arranged on the front portion of compressor, makes the maintenance of compressor complicated.3, intermediate mixing drum easily puts aside more grease, thus affects it and normally work.4, at the end mounted valve of whole unit, when changing the filter of reservoir output, the cold-producing medium of whole unit all need be reclaimed, not only lose time, and the loss of cold-producing medium is large.
Through retrieval, find one section of patent document relevant to present patent application: a kind of single stage compress cryogenic refrigerating system, notification number (CN103868267A), disclosed in this patent, content is: comprise compressor, the input of described compressor is connected with the output of the first gas-liquid separator, and its output is connected with condenser; The output of described condenser is connected with the input of the second gas-liquid separator, first output of described second gas-liquid separator is connected to the first input end of the first heat exchanger by the first expansion valve, the first output of described first heat exchanger is connected to the input of described first gas-liquid separator.
Contrasted by technical characteristic, there is relatively big difference with present patent application in above-mentioned open source literature in technical scheme.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the fully-closed vortex twin-stage low temperature unit of a kind of compact conformation, good refrigeration effect.
Scheme of the present utility model is achieved in that
A kind of fully-closed vortex twin-stage low temperature unit, comprise electric cabinet, two stage compressor, a split-compressor, reservoir and oil eliminator, the blast pipe of described two stage compressor is communicated with the collector of horizontally set respectively, this collector is coaxially connected with intermediate mixing drum, this intermediate mixing drum will pass through the air entry being vertically communicated with the pressure duct input split-compressor arranged after the high-pressure gaseous refrigerant hybrid cooling of input, the exhaust outlet of this split-compressor connects the input port of oil eliminator, the delivery outlet of this oil eliminator connects condenser, described intermediate mixing drum connects charge air cooler, described stage compressor and split-compressor are scroll compressor, described intermediate mixing drum is arranged on the rear portion of I and II compressor.
And the syndeton of described intermediate mixing drum and pressure duct is: an end radial direction of described pressure duct is embedded in intermediate mixing drum, and the pressure duct sidewall being positioned at intermediate mixing drum inner bottom part is shaped with a spill port.
And the diameter of described spill port is 5-6 millimeter.
And the pressure duct end be inlaid in intermediate mixing drum is inclined-plane.
And mounting filter on the pipeline of described reservoir outlet, the pipeline of this filter outlet end is installed a ball valve.
And the diameter of described intermediate mixing drum is greater than the diameter of collector.
Advantage of the present utility model and good effect are:
Compression process is divided into one-level low pressure to compress and secondary high pressure compressed two parts by this unit, cold-producing medium temperature after the cooling of intermediate mixing drum that the compression of one-level low pressure is discharged is reduced to the saturation temperature under this pressure, then enter in the split-compressor of secondary high pressure compressed part, thus reduce secondary high pressure compressor part suction temperature, improve the operating condition of split-compressor greatly, problem when avoiding low temperature in single-stage refrigeration cycle process.The utility model uses at making original unit that can only use evaporating temperature-20 DEG C expand to evaporating temperature-40 DEG C, considerably increase the scope of application of unit, and Energy Efficiency Ratio (COP) reaches 3.87, and efficiency improves 30% compared with single-stage refrigeration unit.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model;
Fig. 2 is the rearview of Fig. 1;
Fig. 3 is the connection sectional view of intermediate mixing drum of the present utility model and pressure duct.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail.
A kind of fully-closed vortex twin-stage low temperature unit, as Fig. 1, shown in Fig. 2, comprise electric cabinet 5, two stage compressor 4, a split-compressor 2, reservoir 8 and oil eliminator 1, the blast pipe of described two stage compressor is communicated with the collector 9 of horizontally set respectively, this collector is coaxially connected with intermediate mixing drum 3, this intermediate mixing drum will input the air entry of split-compressor by the pressure duct 10 being vertically communicated with setting after the high-pressure gaseous refrigerant hybrid cooling of input, the exhaust outlet of this split-compressor connects the input port of oil eliminator, the delivery outlet of this oil eliminator connects condenser (not shown), described intermediate mixing drum connects charge air cooler 11.
1, described stage compressor and split-compressor are scroll compressor, and its advantage is that noise is little, reliability and durability, floor space is little, energy consumption is low.
2, described intermediate mixing drum is arranged on the rear portion of I and II compressor, not only attractive in appearance, the most important thing is that compressor is easy to maintenance.
3, the syndeton of described intermediate mixing drum and pressure duct, as shown in Figure 3:
One end radial direction of described pressure duct is embedded in intermediate mixing drum, and the pressure duct end be inlaid in intermediate mixing drum is inclined-plane, its objective is the area increasing and suck high-pressure gaseous refrigerant, the pressure duct sidewall being positioned at intermediate mixing drum inner bottom part is shaped with a spill port 12, the diameter of this spill port is 5-6 millimeter, its effect enters in reservoir by pipeline after a small amount of grease sucked in intermediate mixing drum can being discharged by spill port, prevent the grease that in intermediate mixing drum, savings is a large amount of, effectively ensure whole set steady, run reliably.
Mounting filter 6 on the pipeline of 4, described reservoir outlet, the pipeline of this filter outlet end is installed a ball valve 7.By ball valve being arranged on the port of export place of filter, refrigerant-recovery amount is greatly reduced, effectively increases work efficiency, and the loss of cold-producing medium being little.
5, the diameter of described intermediate mixing drum is greater than the diameter of collector, effectively reduces the flow velocity flowing into tempering tank inner high voltage gaseous refrigerant.
The utility model has the advantages of for:
1, this unit adopts twin-stage scroll compressor kind of refrigeration cycle, use at making original unit that can only use evaporating temperature-20 DEG C expand to evaporating temperature-40 DEG C, considerably increase the scope of application of unit, and Energy Efficiency Ratio (COP) reaches 3.87, and efficiency improves 30% compared with single-stage refrigeration unit.
2, the intermediate mixing drum in this unit is arranged on the rear portion of I and II compressor, reasonable in design, is convenient to the maintenance of compressor.
3, simple, the design science of the utility model structure rationally, be skillfully constructed, not only ensure stable, the reliability service of whole unit, and it is convenient and swift to change filter, compact conformation, good refrigeration effect.
It is emphasized that; embodiment described in the utility model is illustrative; instead of it is determinate; therefore the utility model comprises the embodiment be not limited to described in detailed description of the invention; every other embodiments drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope of the utility model protection equally.
Claims (6)
1. a fully-closed vortex twin-stage low temperature unit, it is characterized in that: comprise electric cabinet, two stage compressor, a split-compressor, reservoir and oil eliminator, the blast pipe of described two stage compressor is communicated with the collector of horizontally set respectively, this collector is coaxially connected with intermediate mixing drum, this intermediate mixing drum will pass through the air entry being vertically communicated with the pressure duct input split-compressor arranged after the high-pressure gaseous refrigerant hybrid cooling of input, the exhaust outlet of this split-compressor connects the input port of oil eliminator, the delivery outlet of this oil eliminator connects condenser, described intermediate mixing drum connects charge air cooler, described stage compressor and split-compressor are scroll compressor, described intermediate mixing drum is arranged on the rear portion of I and II compressor.
2. fully-closed vortex twin-stage low temperature unit according to claim 1, it is characterized in that: the syndeton of described intermediate mixing drum and pressure duct is: an end radial direction of described pressure duct is embedded in intermediate mixing drum, and the pressure duct sidewall being positioned at intermediate mixing drum inner bottom part is shaped with a spill port.
3. fully-closed vortex twin-stage low temperature unit according to claim 2, is characterized in that: the diameter of described spill port is 5-6 millimeter.
4. the fully-closed vortex twin-stage low temperature unit according to Claims 2 or 3, is characterized in that: the pressure duct end be inlaid in intermediate mixing drum is inclined-plane.
5. fully-closed vortex twin-stage low temperature unit according to claim 4, is characterized in that: mounting filter on the pipeline of described reservoir outlet, the pipeline of this filter outlet end is installed a ball valve.
6. fully-closed vortex twin-stage low temperature unit according to claim 5, is characterized in that: the diameter of described intermediate mixing drum is greater than the diameter of collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392284.3U CN204705068U (en) | 2015-06-08 | 2015-06-08 | A kind of fully-closed vortex twin-stage low temperature unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392284.3U CN204705068U (en) | 2015-06-08 | 2015-06-08 | A kind of fully-closed vortex twin-stage low temperature unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204705068U true CN204705068U (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520392284.3U Expired - Fee Related CN204705068U (en) | 2015-06-08 | 2015-06-08 | A kind of fully-closed vortex twin-stage low temperature unit |
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| CN (1) | CN204705068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288470A (en) * | 2015-06-08 | 2017-01-04 | 天津市丹华宏业制冷技术有限公司 | Fully-closed vortex twin-stage low temperature unit |
-
2015
- 2015-06-08 CN CN201520392284.3U patent/CN204705068U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288470A (en) * | 2015-06-08 | 2017-01-04 | 天津市丹华宏业制冷技术有限公司 | Fully-closed vortex twin-stage low temperature unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20180608 |
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| CF01 | Termination of patent right due to non-payment of annual fee |