CN2839921Y - Naturally multiplex ultra-low temperature refrigerator cabinet - Google Patents
Naturally multiplex ultra-low temperature refrigerator cabinet Download PDFInfo
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- CN2839921Y CN2839921Y CN 200520014086 CN200520014086U CN2839921Y CN 2839921 Y CN2839921 Y CN 2839921Y CN 200520014086 CN200520014086 CN 200520014086 CN 200520014086 U CN200520014086 U CN 200520014086U CN 2839921 Y CN2839921 Y CN 2839921Y
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Abstract
The utility model relates to a kind of natural superposition type super low-temperature refrigerator, its key is a compressor, and this is logical by pipeline and condenser and dew eliminating tube, the other end of condenser links to each other with the interior pipe of one-level counterflow heat exchanger by the one-level gas-liquid separator, the other end of one-level gas-liquid separator links to each other with the outer tube of one-level counterflow heat exchanger by the one-level throttle capillary tube, pipe is by the secondary gas-liquid separator in the other end of one-level counterflow heat exchanger, one the tunnel with the secondary counterflow heat exchanger in the pipe be connected, another road is communicated with secondary counterflow heat exchanger outer tube by the two-step throttle capillary, in the secondary counterflow heat exchanger other end, outer tube is communicated with three stage countercurrent heat exchangers respectively, the interior Guan Ze of the three stage countercurrent heat exchanger other ends is communicated with evaporimeter by device for drying and filtering and three grades of capillaries, the other end of evaporimeter links to each other with the outer tube of three stage countercurrent heat exchangers, and compensator links to each other with the compressor low-pressure channel by throttle capillary tube.Make cryogenic temperature can reach-86 ℃ of low temperature warm areas effectively.
Description
Technical field
The utility model relates to a kind of Cryo Equipment, particularly a kind of natural superposition type super low-temperature refrigerator.
Background technology
Super low-temperature refrigerator refers generally to the cryogenic temperature scope and is-40 ℃--86 ℃ even lower refrigerator.It is the infrastructure device that hospital, Disease Control and Prevention Center, blood station, colleges and universities and scientific research institution must be equipped with.Be mainly used in the low-temperature test of preservation organ, tissue, skin, red blood cell, lymphocyte, DNA, embryo, marrow, seed, pollen, sample etc. and other material etc.The low temperature of existing super low-temperature refrigerator is produced, mainly contain two kinds of methods of two stages of compression refrigeration and double-compressor cascade refrigeration (claiming outer overlapping again), it is too low that two stages of compression is produced cryogenic refrigeration efficient, use lessly, outer cascade refrigeration coefficient of refrigerating performance is higher, and economy is also better, but its complex structure, refrigeration oil enters capillary easily, stops up capillary because of it solidifies at low temperatures, influences the stability of system.Nature overlapping circulation (overlapping circulation in claiming again) is a kind of novel refrigeration modes, cardinal principle is to adopt the mixed working fluid of multiple different boiling, by a compressor, component fractional condensaion stage evaporation through repeatedly gas-liquid separation, different boiling realizes overlapping, thereby has reached the purpose of producing low temperature.Comparing with traditional outer cascade refrigeration machine, at first is simple in structure, with low cost, reliable; Secondly the higher boiling constituent element forms liquid at higher temperature and flows back to compressor through throttling, thereby avoids it to have solid phase to separate out at low temperatures, stops up restricting element; The 3rd, intrasystem refrigeration oil returns compressor through repeatedly gas-liquid separation under higher temperature, and can effectively avoid refrigeration oil to enter cryogenic system obstruction restricting element or enter evaporimeter influences heat-transfer effect; Higher boiling constituent element in the additional mixing working medium returns low-pressure channel in the higher temperature throttling, thereby effectiveness of regenerator is improved, and reduces the backheat loss, has kept higher efficient.Be mainly used in natural gas liquefaction engineering aspect.In addition, in Chinese patents 02269837.X, provide a kind of scheme of single compressor super low-temperature refrigerator, can obtain-60 ℃ low temperature, but because the restriction of structure and cold-producing medium is difficult to reach-86 ℃ or lower temperature.
Summary of the invention
In order to overcome the shortcoming and defect of above-mentioned existing super low-temperature refrigerator, the utility model provide a kind of simple in structure, cost is low, the single compressor of dependable performance nature superposition type super low-temperature refrigerator.
The utility model is achieved in that by cabinet, compressor, condenser, gas-liquid separator, restricting element, heat exchanger, filter, evaporimeter and connecting line thereof and the cold-producing medium that is filled in the above-mentioned refrigeration part and constitutes.Compressor is communicated with condenser and dew eliminating tube by pipeline, the other end of condenser links to each other with the interior pipe of one-level counterflow heat exchanger by the one-level gas-liquid separator, the other end of one-level gas-liquid separator links to each other with the outer tube of one-level counterflow heat exchanger by the one-level throttle capillary tube, pipe is by the secondary gas-liquid separator in the other end of one-level counterflow heat exchanger, one the tunnel with the secondary counterflow heat exchanger in the pipe be connected, another road is communicated with secondary counterflow heat exchanger outer tube by the two-step throttle capillary, in the secondary counterflow heat exchanger other end, outer tube is communicated with three stage countercurrent heat exchangers respectively, the interior Guan Ze of the three stage countercurrent heat exchanger other ends is communicated with evaporimeter by device for drying and filtering and three grades of capillaries, the other end of evaporimeter links to each other with the outer tube of three stage countercurrent heat exchangers, compensator links to each other with the compressor low-pressure channel by throttle capillary tube, and a kind of mix refrigerant is filled in the whole refrigeration system.The compressed machine compression becoming of mix refrigerant high pressure mixed gas, behind condenser, dew eliminating tube, some high boiling condensation of refrigerant become liquid, through the one-level gas-liquid separator, lower boiling mist enters the one-level counterflow heat exchanger wherein, the throttling behind the one-level throttle capillary tube of condensed higher boiling cold-producing medium is laggard goes into the one-level counterflow heat exchanger, returns low-pressure channel behind the evaporation and heat-exchange.In lower boiling mist in the heat exchange of one-level counterflow heat exchanger, wherein after the mid-boiling point condensation of refrigerant in the secondary gas-liquid separator separates, throttling is laggard behind the two-step throttle capillary goes into the secondary counterflow heat exchanger, return low-pressure channel behind the evaporation and heat-exchange, lower boiling working medium enters three stage countercurrent heat exchangers after entering the heat exchange of secondary counterflow heat exchanger, the low pressure of coming out with the evaporimeter further heat exchange that refluxes, condensed liquid enters the evaporator evaporation refrigeration behind three grades of capillary-compensateds.The low boiling component process counterflow heat exchangers at different levels that last evaporimeter comes out return compressor with the cold-producing medium of other boiling point, thereby finish whole circulation.The utility model mix refrigerant is made up of higher boiling cold-producing medium, mid-boiling point cold-producing medium, low boiling point refrigerant, wherein the higher boiling cold-producing medium by R600a, R134a, R142b, R290 or in this material any two, three kinds or multiple mixture form; The mid-boiling point cold-producing medium by R23, R170, R508a, R508b or in this material any two, three kinds or multiple mixture form; Low boiling point refrigerant is made up of R1150, R14 or mixture.The injection pressure of nature overlapping system is usually than general refrigerator and air-conditioning system height, and the utility model is provided with a compensator of regulating pressure specially at low-pressure end, links to each other with the compressor return air pipe by capillary.When shutting down; the higher middle low-boiling point gas of pressure enters compensator; the equalizing pressure of effective reduction system; during start; the higher higher boiling working medium of concentration at first participates in circulation; the middle low boiling working fluid of compensator progressively adds to system by capillary, can effectively reduce the pressure of a period of time inner high voltage side after the startup.The utility model is provided with two place's gas-liquid separation devices, the liquid freezing oil that brings out from compressor at first separates the one-level gas-liquid separator with condensed higher boiling cold-producing medium, return compressor through throttling arrangement, a spot of vaporific refrigeration oil is by heat exchanger and form liquid through supercooling and further separate in the secondary gas-liquid separator with condensed mid-boiling point cold-producing medium and return compressor through throttling arrangement, refrigeration oil in the mix refrigerant through twice separation after, effectively avoided refrigeration oil to enter cryogenic system and stopped up capillary, made the cryogenic temperature of system can reach-86 ℃ of low temperature warm areas effectively.
Description of drawings
Fig. 1 is the utility model refrigeration system circular chart.
The specific embodiment
In conjunction with Fig. 1, by compressor 1, condenser 2, gas-liquid separator 4,11, restricting element 6,9,12,5, heat exchanger 5,8,10, filter 13, evaporimeter 11, compensator 14 and connecting line thereof and be filled in cold-producing medium in the above-mentioned refrigeration part and constituted whole super low temperature refrigeration system.The compressed machine of mix refrigerant (1) compression becoming high pressure mixed gas, behind condenser (2), dew eliminating tube (3), high boiling condensation of refrigerant becomes liquid, through one-level gas-liquid separator (4), lower boiling mix refrigerant enters pipe in the one-level counterflow heat exchanger (5) wherein, condensed higher boiling cold-producing medium enters one-level counterflow heat exchanger outer tube after one-level throttle capillary tube (6) throttling, return low-pressure channel behind the evaporation and heat-exchange.In lower boiling mist in one-level counterflow heat exchanger (5) heat exchange, wherein separate at secondary gas-liquid separator (7) after the condensation of mid-boiling point working medium, throttling is laggard behind two-step throttle capillary (9) goes into secondary counterflow heat exchanger (8) outer tube, return low-pressure channel behind the evaporation and heat-exchange, lower boiling cold-producing medium enters three stage countercurrent heat exchangers (10) after entering secondary counterflow heat exchanger (8) heat exchange, the low pressure of coming out with evaporimeter (11) the further heat exchange that refluxes enters evaporimeter (11) sweat cooling after condensed liquid drying filter (13) and three grades of capillaries (12) throttling.The low boiling component process counterflow heat exchangers at different levels that last evaporimeter comes out return compressor (1) with the cold-producing medium of other boiling point, thereby finish whole circulation.Compensator (14) links to each other with compressor (1) low-pressure channel by throttle capillary tube (15).Mix refrigerant is made up of a minute higher boiling cold-producing medium, mid-boiling point cold-producing medium, low boiling point refrigerant, wherein the higher boiling cold-producing medium by R600a, R134a, R142b, R290 or in this material any two, three kinds or multiple mixture form; The mid-boiling point cold-producing medium by R23, R170, R508a, R508b or in this material any two, three kinds or multiple mixture form; Low boiling point refrigerant is made up of R1150, R14 or mixture.
Claims (2)
1, a kind of natural superposition type super low-temperature refrigerator, be by cabinet, compressor, condenser, gas-liquid separator, restricting element, heat exchanger, filter, evaporimeter and connecting line thereof and the cold-producing medium that is filled in the above-mentioned refrigeration part constitute, it is characterized in that: compressor (1) is communicated with condenser (2) and dew eliminating tube (3) by pipeline, the other end of condenser (2) links to each other with the interior pipe of one-level counterflow heat exchanger (5) by one-level gas-liquid separator (4), the other end of one-level gas-liquid separator (4) links to each other with the outer tube of one-level counterflow heat exchanger (5) by one-level throttle capillary tube (6), pipe is by secondary gas-liquid separator (7) in the other end of one-level counterflow heat exchanger (5), one the tunnel with secondary counterflow heat exchanger (8) in the pipe be connected, another road is communicated with secondary counterflow heat exchanger (8) outer tube by two-step throttle capillary (9), in secondary counterflow heat exchanger (8) other end, outer tube is communicated with three stage countercurrent heat exchangers (10) respectively, the interior Guan Ze of three stage countercurrent heat exchanger (10) other ends is communicated with evaporimeter (11) by device for drying and filtering (13) and three grades of capillaries (12), the other end of evaporimeter (11) links to each other with the outer tube of three stage countercurrent heat exchangers (10), compensator (14) links to each other with compressor (1) low-pressure channel by throttle capillary tube (15), and a kind of mix refrigerant is filled in the whole refrigeration system.
2, a kind of natural superposition type super low-temperature refrigerator according to claim 1, it is characterized in that said mix refrigerant is made up of a minute higher boiling cold-producing medium, mid-boiling point cold-producing medium, low boiling point refrigerant, wherein the higher boiling cold-producing medium by R600a, R134a, R142b, R290 or in this material any two, three kinds or multiple mixture form, the mid-boiling point cold-producing medium by R23, R170, R508a, R508b or in this material any two, three kinds or multiple mixture form, low boiling point refrigerant is made up of R1150, R14 or mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520014086 CN2839921Y (en) | 2005-08-15 | 2005-08-15 | Naturally multiplex ultra-low temperature refrigerator cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520014086 CN2839921Y (en) | 2005-08-15 | 2005-08-15 | Naturally multiplex ultra-low temperature refrigerator cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN2839921Y true CN2839921Y (en) | 2006-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520014086 Expired - Fee Related CN2839921Y (en) | 2005-08-15 | 2005-08-15 | Naturally multiplex ultra-low temperature refrigerator cabinet |
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| CN (1) | CN2839921Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344617A (en) * | 2013-07-26 | 2015-02-11 | 中科美菱低温科技有限责任公司 | Self-washing mechanism for ultra-low temperature freezer |
| CN106196682A (en) * | 2015-07-30 | 2016-12-07 | 青岛海尔特种电器有限公司 | Double refrigeration systems, super low temperature refrigeration equipment and refrigerating method |
| CN109269154A (en) * | 2018-08-30 | 2019-01-25 | 詹实强 | A kind of coil pipe and the refrigeration system comprising the coil pipe |
-
2005
- 2005-08-15 CN CN 200520014086 patent/CN2839921Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344617A (en) * | 2013-07-26 | 2015-02-11 | 中科美菱低温科技有限责任公司 | Self-washing mechanism for ultra-low temperature freezer |
| CN106196682A (en) * | 2015-07-30 | 2016-12-07 | 青岛海尔特种电器有限公司 | Double refrigeration systems, super low temperature refrigeration equipment and refrigerating method |
| CN109269154A (en) * | 2018-08-30 | 2019-01-25 | 詹实强 | A kind of coil pipe and the refrigeration system comprising the coil pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061122 Termination date: 20120815 |