CN201104043Y - Ultra-low temperature refrigerating device - Google Patents
Ultra-low temperature refrigerating device Download PDFInfo
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- CN201104043Y CN201104043Y CNU2007201732888U CN200720173288U CN201104043Y CN 201104043 Y CN201104043 Y CN 201104043Y CN U2007201732888 U CNU2007201732888 U CN U2007201732888U CN 200720173288 U CN200720173288 U CN 200720173288U CN 201104043 Y CN201104043 Y CN 201104043Y
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Abstract
The utility model discloses ultralow temperature refrigerating equipment, comprising a high-temperature stage refrigerating unit and a low-temperature stage refrigerating unit which are independent, wherein, a high-temperature evaporator is connected with a low-temperature condenser; the high-temperature stage adopts the ordinary refrigerating way with single freezing medium, the low-temperature stage adopts an automatic grading condensing throttling refrigerating system with a plurality of mixed working substances. Therefore, the utility model is suitable for the freezing fields such as the scientific research, the aviation, the war industry, the biology and the materials of the area with a temperature of 12 DEG C below zero to 160 DEG C below zero.
Description
Technical field
The utility model belongs to field of refrigeration, relates to a kind of refrigerating plant, and specific design is a kind of to be applicable to that temperature is at-120 ℃～-160 ℃ super low temperature refrigeration device.
Background technology
In modern Refrigeration Technique, realize-70 ℃～-90 ℃ low temperature by two-stage multiplex refrigerating.Along with development in science and technology-120 ℃～-160 ℃ of temperature provinces are applied in fields such as cryogenic freezing, scientific research, aviation, military project, biology, material more and more widely.Reaching this temperature province then needs by the cascade refrigeration mode more than three grades or three grades, this mode compressor and control assembly are more, and cost is higher, and solidification phenomenon appears in compressor oil in the cryogenic system easily simultaneously, stop up restricting element, system often can't normally move.
Also have a kind of formation adopt multicomponent mixture work medium respectively condensation throttling refrigeration mode (patent No.: ZL03121465.7) this internal system complex structure, it is too big to design different system's difficulty, is difficult to realize real being widely used; Simultaneously, the cold-producing medium kind is too much, and occupied fund is big, prepares too loaded down with trivial details.
Summary of the invention
The utility model provides a kind of super low temperature refrigeration device, this refrigeration system adopts twin-stage overlapping and overlapping structure combining voluntarily, the refrigeration working medium of two-stage is separated from each other, traditional refrigeration modes is adopted in the refrigerating circuit of high temperature level, mix refrigerant fractional condensaion throttling refrigeration mode is adopted in the refrigerating circuit of low temperature level, thereby realizes the super low temperature refrigeration effect of refrigeration in-120 ℃～-160 ℃ of zones.
A kind of super low temperature refrigeration device, comprise the refrigerating circuit of high temperature level, the refrigerating circuit of low temperature level, the refrigerating circuit of high temperature level comprises high temperature stage compressor, condenser, restricting element A and outer circulation evaporative condenser, the refrigerating circuit of low temperature level comprises low temperature stage compressor, middle refrigeration bag A, middle refrigeration bag B, reverse flow heat exchanger, restricting element B, oil eliminator, evaporimeter, capillary, magnetic valve and surge tank also comprise the outer circulation evaporative condenser; Described restricting element A is identical with restricting element B, described in the middle of refrigeration bag A and middle refrigeration to wrap B identical.
In the refrigerating circuit of described high temperature level, high temperature stage compressor, condenser, restricting element A and outer circulation evaporative condenser link to each other in turn, the output of restricting element A is connected to the input interface a of outer circulation evaporative condenser, and the input that the output interface b of outer circulation evaporative condenser is connected to the high temperature stage compressor forms the refrigerating circuit of high temperature level.
In the refrigerating circuit of described low temperature level, low temperature stage compressor, oil eliminator, outer circulation evaporative condenser, middle refrigeration bag A, middle refrigeration bag B, reverse flow heat exchanger, restricting element B link to each other in turn with evaporimeter.Interface a and the capillary of circulating and evaporating condenser A in refrigeration was wrapped among the A in the middle of low temperature stage compressor input port connected, capillary is connected with surge tank, low temperature stage compressor delivery outlet connects the interface a of oil eliminator, oil eliminator interface b connects low temperature stage compressor oil return opening, oil eliminator interface c is connected with outer circulation evaporative condenser interface c with magnetic valve, and magnetic valve links to each other with surge tank.
Refrigeration is wrapped among the A in the middle of described, the interface a of gas-liquid separator A, and restricting element C, the interface b of interior circulating and evaporating condenser A is continuous in proper order; The interface b of gas-liquid separator A, the interface d of interior circulating and evaporating condenser A links to each other in proper order with the interface c that middle refrigeration is wrapped gas-liquid separator B among the B.The interface b of interior circulating and evaporating condenser A links to each other with the interface d that the centre refrigeration is wrapped the interior circulating and evaporating condenser B among the B.
Refrigeration bag B in the middle of described, the interface b of gas-liquid separator B, the interface d of interior circulating and evaporating condenser B, the interface d of reverse flow heat exchanger is continuous in proper order.The interface a of gas-liquid separator B, restricting element D links to each other in proper order with the interface b of interior circulating and evaporating condenser B.The interface b of interior evaporative condenser B links to each other with the interface a of reverse flow heat exchanger.
The interface c of described reverse flow heat exchanger, restricting element B, the interface b of evaporimeter and reverse flow heat exchanger links to each other in proper order.
Described a kind of super low temperature refrigeration device, the refrigerating circuit of described low temperature level adopt polynary working medium fractional condensaion throttle refrigeration system.
Described a kind of super low temperature refrigeration device, the compression ratio of the lubricating oil refrigeration compressor of described high temperature level, low temperature level is less than 12.
The advantage of a kind of super low temperature refrigeration device of the utility model is:
1, saved the production cost of compressor and system control component than the overlapping system more than three grades or three grades, effectively lowered energy consumption, can effectively utilize gas-liquid separator to separate lubricating oil, caused pipeline blockage in order to avoid lubricating oil enters cryogenic system.
2, this refrigeration system is than multicomponent mixture work medium difference condensation throttle refrigeration system, few 2 gas-liquid separators, 2 interior circulating and evaporating condensers, 1 restricting element, be convenient to the designer and understand the principle of being familiar with the grasp system, effectively the save design cost prevents the waste that causes in the development test.Be convenient to refrigeration system, help extensive use in-120 ℃～-160 ℃ of temperature fields according to the different sizes of different size loads design.
Description of drawings
Fig. 1 is the johning knot composition of a kind of super low temperature refrigeration device of the utility model.
1. high temperature stage compressor 2. condensers 3. restricting element A 4. outer circulation evaporative condensers
401. interface a 402. interface b 403. interface c 404. interface d
5. reverse flow heat exchanger 501. interface a 502. interface b 503. interface c
504. interface d 6. low temperature stage compressors 601 input ports 602 oil return openings
603 delivery outlets, 7. oil eliminators, 701 interface a, 702 interface b
Circulating and evaporating condenser A 811. interface a in the refrigeration bag A 81. in the middle of the 703 interface c 8.
812. interface b 813. interface c 814. interface d 82. gas-liquid separator A
821. interface a 822. interface b 823. interface c 83. restricting elements
9. circulating and evaporating condenser B 911. interface a 912. interface b in the middle refrigeration bag B 91.
913. interface c 914. interface d 92. gas-liquid separators 921 interface a
922. interface b 923. interface c 93. restricting element D 10. surge tanks
13. magnetic valve 14. capillaries
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
A kind of super low temperature refrigeration device, comprise the refrigerating circuit of high temperature level, the refrigerating circuit of low temperature level, capillary 14, magnetic valve 13 and surge tank 10, the refrigerating circuit of high temperature level comprises high temperature stage compressor 1, condenser 2, restricting element A3 and outer circulation evaporative condenser 4, the refrigerating circuit of low temperature level comprises low temperature stage compressor 6, middle refrigeration bag A8, middle refrigeration bag B9, reverse flow heat exchanger 5, restricting element B11, evaporimeter 12, oil eliminator 7 and outer circulation evaporative condenser 4; Described restricting element A3 is identical with restricting element B11, described in the middle of refrigeration bag A8 and middle refrigeration to wrap B9 identical.
In the refrigerating circuit of described high temperature level, take the pipeline ways of connecting, high temperature stage compressor 1, condenser 2, restricting element A3 and outer circulation evaporative condenser 4 link to each other in turn, the output of restricting element A3 is connected to the input interface a401 of outer circulation evaporative condenser 4, the input that the output interface b402 of outer circulation evaporative condenser 4 is connected to high temperature stage compressor 1 forms the refrigerating circuit of high temperature level, the interface C403 of outer circulation evaporative condenser connects the interface c703 of oil eliminator 7, and the interface d404 of outer evaporative condenser connects the interface c823. of gas-liquid separator A82
In the refrigerating circuit of described low temperature level, take the pipeline ways of connecting, low temperature stage compressor 6, oil eliminator 7, outer circulation evaporative condenser 4, middle refrigeration bag A8, middle refrigeration bag B9, reverse flow heat exchanger 5, restricting element B11 link to each other in turn with evaporimeter 12.Interface a811 and the capillary 14 of circulating and evaporating condenser A81 in refrigeration was wrapped among the A8 in the middle of low temperature stage compressor 6 input ports 601 connected, capillary 14 is connected with surge tank 10, the delivery outlet 603 of low temperature stage compressor 6 connects the interface a701 of oil eliminator 7, oil eliminator 7 interface b702 connect the oil return opening 602 of low temperature stage compressor 6, oil eliminator interface c703 is connected with outer circulation evaporative condenser 4 interface c403 with magnetic valve 13, and magnetic valve 13 links to each other with surge tank 10.
Refrigeration is wrapped among the A8 in the middle of described, the interface a821 of gas-liquid separator A82 links to each other with restricting element C83, the interface b812 of interior circulating and evaporating condenser A81 links to each other with restricting element c83, the interface b822 of gas-liquid separator A82 links to each other with the interface d814 of interior circulating and evaporating condenser A81, the interface b812 of interior circulating and evaporating condenser A81 links to each other with the interface a911 that the centre refrigeration is wrapped the interior circulating and evaporating condenser B91 among the B9, the interface c813 of interior circulating and evaporating condenser A81 links to each other with the interface c923 of the gas-liquid separator B92 of centre refrigeration bag B9, and the interface a811 of interior circulating and evaporating condenser A81 links to each other with cryogenic compressor 6 interfaces 601.
Refrigeration bag B9 in the middle of described, the interface b922 of gas-liquid separator B92 links to each other with the interface d914 of interior circulating and evaporating condenser B91, the interface d504 of reverse flow heat exchanger 5 links to each other with the interface C913 of interior circulating and evaporating condenser B91, the interface a921 of gas-liquid separator B92 links to each other with restricting element D93, and the interface b912 of interior circulating and evaporating condenser B91 links to each other with restricting element D93.The interface b912 of interior evaporative condenser B91 links to each other with the interface a501 of reverse flow heat exchanger 5.
The interface c503 of described reverse flow heat exchanger 5 links to each other with restricting element B11, and the interface b502 of evaporimeter 12 and reverse flow heat exchanger 5 links to each other, and restricting element B11 links to each other with evaporimeter 12.
High temp, refrigerating system at first starts, and by adopting the common refrigeration modes of unitary system cryogen, outer circulation evaporative condenser 4 temperature is reached about-35 ℃.The cold-producing medium of high temperature stage compressor 1 output is that to enter condenser 2 back condensing agents be liquid high pressure to gaseous state, through entering outer circulation evaporative condenser 4 by interface a401 after the restricting element A3 throttling, cold-producing medium was evaporated to the gas-liquid mixed state and got back to high temperature stage compressor 1 from interface b402 from liquid state this moment.
Cryogenic refrigerating system adopts mix refrigerant fractional condensaion technology, and cold-producing medium is that gaseous state charges into, and is beneficial to start and grasp the total amount of adding.Start cryogenic refrigerating system, low temperature stage compressor 6 is discharged the gaseous refrigerant of the HTHP between 10～15BAR from delivery outlet 603, because the centrifugation of oil eliminator 7 will be lubricated the wet goods material separates back cryogenic compressor 6 from cold-producing medium oil return opening 602, enter outer circulation evaporative condenser 4 and in-35 ℃ environment, carry out condensation by interface c403 with gaseous state during through oil eliminator 7 through getting cold-producing medium after separating.Refrigeration was wrapped among the gas-liquid separator A82 of A8 in the middle of condensed gas-liquid mixture entered by interface d404, the cold-producing medium that is condensed out from gas-liquid separator A82 flow through restricting element C83 enter in the interface b812 of circulating and evaporating condenser A81 carry out sweat cooling, evaporating temperature is about-65 ℃; And the gas that is not condensed enters interior circulating and evaporating condenser A81 and carry out condensation under-65 ℃ of environment from the interface d814 of interior circulating and evaporating condenser A81 by gas-liquid separator A82, and the condensing agent mid-boiling point will be evaporated at the composition below-65 ℃ like this.Condensed cold-producing medium enters the gas-liquid separator B92 of middle refrigeration bag B9 from the interface d813 of interior circulating and evaporating condenser A81, be condensed the lubricating oil separated and part cold-producing medium flow through after by gas-liquid separator B92 restricting element D93 enter in the interface b912 of circulating and evaporating condenser B91 carry out sweat cooling once more, evaporating temperature is about-100 ℃, and the gas that is not condensed enters interior circulating and evaporating condenser B9 and carry out condensation under-100 ℃ of environment from the interface d914 of interior circulating and evaporating condenser B91 by gas-liquid separator B92, and the condensing agent mid-boiling point will be evaporated at the composition below-100 ℃ like this; Cold-producing medium after being condensed flows out from the interface c913 of interior circulating and evaporating condenser B91, and the backflow that enters reverse flow heat exchanger 5 and evaporimeter 12 outputs from the interface d504 of reverse flow heat exchanger 5 is-120 ℃ air-flow generation heat exchange; Be that the condensing agent mid-boiling point will be evaporated at the composition below-120 ℃, condensing agent is from the interface c503 output of reverse flow heat exchanger 5, enter evaporimeter 12 by restricting element B11 and carry out sweat cooling to-150 ℃, then the condensing agent mid-boiling point will be evaporated at the composition below-150 ℃.Temperature behind the sweat cooling-120 ℃ cold-producing medium is approximately carried out heat exchange from the interface 502 that the outlet of evaporimeter 12 enters reverse flow heat exchanger 5, enter the interface b912 of the interior circulating and evaporating condenser B91 the middle refrigeration bag B9 again from the low tension outlet interface a501 of reverse flow heat exchanger 5, the interface a911 of interior circulating and evaporating condenser B91 links to each other with the interface b812 that the centre refrigeration is wrapped the interior circulating and evaporating condenser A81 among the A8, and the interface a811 of interior circulating and evaporating condenser A81 links to each other with the input port 601 of low temperature stage compressor and finishes whole circulation.
Wherein gas-liquid separator A82 and gas-liquid separator B92 also are equivalent to the effect of oil eliminator, prevent that effectively lubricating oil from entering cryogenic system, and the frozen plug pipeline takes place.The size that designs suitable surge tank 10 realizes that static state charges pressure to be lower than condensing agent at that time condensing pressure.
Claims (6)
1, a kind of super low temperature refrigeration device comprises the refrigerating circuit of high temperature level, the refrigerating circuit of low temperature level; The refrigerating circuit of high temperature level comprises the high temperature stage compressor, condenser, restricting element A and outer circulation evaporative condenser, the refrigerating circuit of low temperature level comprises the low temperature stage compressor, capillary, magnetic valve, oil eliminator and surge tank, middle refrigeration bag A, middle refrigeration bag B, restricting element B and evaporimeter, it is characterized in that, refrigerating circuit is connected by the outer circulation evaporative condenser refrigerating circuit of high temperature level with the low temperature level, the output of restricting element A is connected to the input interface a of outer circulation evaporative condenser, the input that the output interface b of outer circulation evaporative condenser is connected to the high temperature stage compressor forms the refrigerating circuit of high temperature level, and oil eliminator interface c is connected with outer circulation evaporative condenser interface c with magnetic valve;
In the refrigerating circuit of described high temperature level, high temperature stage compressor, condenser, restricting element A and outer circulation evaporative condenser link to each other in turn, the output of restricting element A is connected to the input interface a of outer circulation evaporative condenser, and the input that the output interface b of outer circulation evaporative condenser is connected to the high temperature stage compressor forms the refrigerating circuit of high temperature level;
In the refrigerating circuit of described low temperature level, the low temperature stage compressor, oil eliminator, the outer circulation evaporative condenser, middle refrigeration bag A, middle refrigeration bag B, reverse flow heat exchanger, restricting element B links to each other in turn with evaporimeter, interface a and the capillary of circulating and evaporating condenser A in refrigeration was wrapped among the A in the middle of low temperature stage compressor input port connected, capillary is connected with surge tank, low temperature stage compressor delivery outlet connects the interface a of oil eliminator, oil eliminator interface b connects low temperature stage compressor oil return opening, oil eliminator interface c is connected with outer circulation evaporative condenser interface c with magnetic valve, and magnetic valve links to each other with surge tank; Outer circulation evaporative condenser interface d is connected with the interface c of gas-liquid separator A among the middle refrigeration bag A.
2, a kind of super low temperature refrigeration device according to claim 1 is characterized in that restricting element A is identical with restricting element B, comprises device for drying and filtering and choke valve.
3, a kind of super low temperature refrigeration device according to claim 1, refrigeration bag A is identical with middle refrigeration bag B in the middle of it is characterized in that, circulating and evaporating condenser in comprising, gas-liquid separator, restricting element.
4, a kind of super low temperature refrigeration device according to claim 1 is characterized in that the evaporimeter of high temperature level combines with the condenser of low temperature level, is combined into the outer circulation evaporative condenser, carries out heat exchange, and the refrigeration working medium of two-stage is separated from each other.
5, a kind of super low temperature refrigeration device according to claim 1 is characterized in that, polynary working medium fractional condensaion throttle refrigeration system is adopted in the refrigerating circuit of described low temperature level.
6, a kind of super low temperature refrigeration device according to claim 1 is characterized in that, the compression ratio of the lubricating oil refrigeration compressor of described high temperature level, low temperature level is less than 12.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201732888U CN201104043Y (en) | 2007-09-21 | 2007-09-21 | Ultra-low temperature refrigerating device |
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| CNU2007201732888U CN201104043Y (en) | 2007-09-21 | 2007-09-21 | Ultra-low temperature refrigerating device |
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| CN201104043Y true CN201104043Y (en) | 2008-08-20 |
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| CNU2007201732888U Expired - Fee Related CN201104043Y (en) | 2007-09-21 | 2007-09-21 | Ultra-low temperature refrigerating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104188791A (en) * | 2014-09-15 | 2014-12-10 | 龙志刚 | Cryogenic sauna facility |
| CN108531135A (en) * | 2018-04-10 | 2018-09-14 | 龙志刚 | Mix refrigerant suitable for deep cooling warm area and preparation method thereof, application process |
| CN109481000A (en) * | 2018-12-26 | 2019-03-19 | 上海导向医疗系统有限公司 | For cold therapy can pressure controlled refrigerating plant and cold therapy system |
-
2007
- 2007-09-21 CN CNU2007201732888U patent/CN201104043Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104188791A (en) * | 2014-09-15 | 2014-12-10 | 龙志刚 | Cryogenic sauna facility |
| CN108531135A (en) * | 2018-04-10 | 2018-09-14 | 龙志刚 | Mix refrigerant suitable for deep cooling warm area and preparation method thereof, application process |
| CN108531135B (en) * | 2018-04-10 | 2021-05-07 | 龙志刚 | Mixed refrigerant suitable for cryogenic temperature zone and preparation method and application method thereof |
| US11072733B2 (en) | 2018-04-10 | 2021-07-27 | Zhigang LONG | Mixed refrigerant for a cryogenic temperature range, and methods for preparing and applying the same |
| CN109481000A (en) * | 2018-12-26 | 2019-03-19 | 上海导向医疗系统有限公司 | For cold therapy can pressure controlled refrigerating plant and cold therapy system |
| CN109481000B (en) * | 2018-12-26 | 2023-11-21 | 上海导向医疗系统有限公司 | Pressure-adjustable refrigeration device for cryotherapy and cryotherapy system |
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Granted publication date: 20080820 Termination date: 20150921 |
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