CN201085682Y - Low-temperature precooling device of cold therapy instrument - Google Patents
Low-temperature precooling device of cold therapy instrument Download PDFInfo
- Publication number
- CN201085682Y CN201085682Y CNU2007201107035U CN200720110703U CN201085682Y CN 201085682 Y CN201085682 Y CN 201085682Y CN U2007201107035 U CNU2007201107035 U CN U2007201107035U CN 200720110703 U CN200720110703 U CN 200720110703U CN 201085682 Y CN201085682 Y CN 201085682Y
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- heat exchanger
- compressor
- liquid separator
- condenser
- low
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- 238000002560 therapeutic procedure Methods 0.000 title claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 20
- 238000001704 evaporation Methods 0.000 claims abstract description 10
- 230000008020 evaporation Effects 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000003507 refrigerant Substances 0.000 claims description 19
- 239000006200 vaporizer Substances 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 claims 2
- CFQGDIWRTHFZMQ-UHFFFAOYSA-N argon helium Chemical compound [He].[Ar] CFQGDIWRTHFZMQ-UHFFFAOYSA-N 0.000 abstract description 8
- 238000000315 cryotherapy Methods 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- 239000003921 oil Substances 0.000 description 11
- 206010028980 Neoplasm Diseases 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 238000002681 cryosurgery Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010725 compressor oil Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001575 pathological effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 208000009084 Cold Injury Diseases 0.000 description 1
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 230000005680 Thomson effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000036592 analgesia Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004159 blood analysis Methods 0.000 description 1
- 230000030833 cell death Effects 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000002595 cold damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
Images
Abstract
The utility model discloses a low-temperature precooling device used for the cryotherapy instrument, which belongs to the cooling device field. The utility model is characterized in that one end of a compressor is connected with a condenser through a pipeline; the other end of the condenser is connected with an oil separator; the oil separator is respectively connected with a vapor liquid separator, the compressor and a heat exchanger through pipelines; one end of the vapor liquid separator is connected with the inlet of the heat exchanger through a throttling device; the other end of the vapor liquid separator is connected with the outlet of the heat exchanger; the heat exchanger is connected with an evaporator through a filter and an evaporation throttling device; the evaporator is communicated with the compressor through an air return pipe by the heat exchanger; and a pressure adjuster is connected with the high and lower pressure channels of the compressor through an electromagnetic valve. The disadvantages such as expensive price, large volume and inconvenient application found in the liquid nitrogen system and the argon-helium system cryotherapy instruments are overcome by the utility model. The low-temperature precooling device which has simple structure is convenient to be matched with other elements of other cryotherapy instruments.
Description
Technical field
This utility model relates to a kind of cryogenic refrigerating unit, especially a kind of low temperature pre-cooler of cold therapy instrument.
Background technology
Cryosurgery (cryosurgery) claims cold therapy again, and it refers to utilize cryosurgery tool, thereby making lesion tissue experience cooling, freezing and rewarming causes irreversible damage so that a downright bad clinical medicine of control arranged.Therefore, the cryosurgery operation is the quite effective a kind of method of treatment tumor.It can replace operation, and not only wound is small, and has the analgesia, reduces hemorrhage, response light and prevent advantage such as tumor diffusion.The cold therapy of tumor is that several the probes that thermocouple is installed that can control separately insert tumor locus, imposes low temperature at end of probe then tumor is killed.The ultimate principle of cold therapy tumor is the mechanical injuries of interior ice crystal formation of cell and ice crystal, cell dehydration and shrinkage, cell electrolyte toxicity concentrated and pH value change, the degeneration of cell membrane lipid protein ingredient, blood stagnation and little blood examination formation.In addition, refrigerated effect also may be relevant with immunity.Be applied to cold therapy at present and mainly contain two kinds of systems: liquid nitrogen system and argon helium system.Liquid nitrogen refrigerating system is that the principle that need absorb a large amount of gasification latent heats when utilizing material to become gas by liquid reduces tissue temperature rapidly.In the operation liquid nitrogen is fed in the cryoprobe, gasification heat absorption when its contact tissue can make the temperature of treatment probe reduce rapidly, makes and organizes fast cooling, freezes, the air that passes to room temperature or heating then in probe makes organizes rewarming, through freeze-thaw cycle repeatedly tumor is killed.Argon helium system utilizes the adiabatic throttling effect of gas to finish the therapeutic process of cooling and rewarming, when the higher gas of pressure is flowed through the aperture adiabatic throttling, along with the decline temperature of pressure tends to change, some gas temperature descends, and some gas temperature rises, and the adiabatic throttling effect is also referred to as joule thomson effect.When cryoprobe internal recycle argon, argon reaches-140 ℃ of freezing pathological tissues in a short period of time in the point of a knife rapid expansion, during rewarming, helium is in the point of a knife rapid expansion, and heating is in the pathological tissues of ultralow temperature state rapidly, colds and heat succeed each other to make the tumor cell death of breaking.
Argon helium system has excellent quick freezing performance, but also has certain deficiency, as: (1) lowers the temperature and heats up and only depend on gas differential pressure, and along with the consumption of gas, refrigeration performance reduces.(2) the operating pressure height of argon, therefore to the security requirement height of whole system, and transportation trouble.(3) argon is a rare gas, the cost height.(4) high pressure argon bottle (40MPa) is difficult for obtaining, and only is confined to few city, has limited the popularization of argon helium system.
And do not say for liquid nitrogen system, its biggest advantage is the cryogenic temperature that can provide lower, but its shortcoming is: (1) need carry out vacuum thermal insulator to the cryoprobe back segment because the temperature (196 ℃) of liquid nitrogen is lower, to avoid the cold injury health tissues, cause the diameter of cryoprobe bigger.(2) the liquid nitrogen transfer pipeline is owing to will design thermal insulation layer, and diameter is big, and in operation process because low temperature has to a certain degree stiff, be unfavorable for that the doctor uses.(3) temperature is lower in the cryoprobe handle operation process, and the doctor grips inconvenience.
Summary of the invention
The purpose of this utility model is the problem that exists at the equipment in existing liquid nitrogen system and the argon helium system, proposes a kind of low temperature pre-cooler of novel cold therapy instrument.The application of this low temperature pre-cooler, can make the cold therapy instrument adopt the room temperature nitrogen of 5-10MPa as surgical work gas, avoided argon helium system mesohigh argon (40MPa) expensively, difficult obtain, problem such as transportation difficulty, deficiency such as the cutter that conveying the caused footpath that has also overcome low temperature liquid nitrogen is big, transfer pipeline is thick.
This utility model is achieved in that an end of compressor links to each other with condenser by pipeline, the other end of condenser is connected with oil eliminator, oil eliminator by pipeline respectively with vapour liquid separator, compressor and heat exchanger link to each other, one end of vapour liquid separator is connected with the import of heat exchanger by throttling arrangement, the other end of vapour liquid separator is connected with the outlet of heat exchanger, heat exchanger also passes through filter, the evaporation throttling arrangement links to each other with vaporizer, and vaporizer is communicated with compressor through heat exchanger by muffler, and pressure-regulating device is the height by electromagnetic valve and compressor then, low-pressure channel links to each other.This utility model adopts the natural overlapping low-temperature refrigeration system of mixed working fluid, for reaching the low temperature warm area of cold therapy, adopts separating for several times, multistage cascade refrigeration circulation.The compressed machine compression becoming of mixed working fluid high pressure mixed gas, through behind condenser, dew eliminating tube and the oil eliminator, mist enters vapour liquid separator and counterflow heat exchanger, in this mixed working fluid process separating for several times and heat exchange, reach the isolating purpose that progressively liquefies, only low boiling working fluid enters vaporizer by filter through throttling arrangement at last.The low boiling component that the final evaporation device comes out returns compressor through counterflow heat exchangers at different levels with the working medium of other boiling point, thereby finishes whole circulation.Because this utility model has increased pressure-regulating device in refrigeration system, so just solved the too high problem of natural cascade refrigeration system starting pressure.This utility model has also adopted the multi-grade oil segregation apparatus, and the effective especially oil separating device of multistage vapour liquid separator has avoided compressor oil to enter cryogenic system effectively or the evaporation capillary tube causes the stifled phenomenon of oil.In addition, the cryogenic high pressure nitrogen that this utility model produces is not directly to be freezed by evaporation tube, but by a kind of low melting point for example ethanol as refrigerant, at first refrigerant is cooled to the following temperature of freezing point by vaporizer, refrigerant is solidified, the latent heat that absorbs when the refrigerative cold of high pressure nitrogen is mainly transformed by the refrigerant solid-liquid provides, because when refrigerant melts, thaw temperature is steady state value substantially, and latent heat is bigger, can provide more stable and lasting low temperature environment (below 110 ℃) to high pressure nitrogen, guarantee that the cutter head of cold therapy instrument is in more constant low temperature.Obtain the lower high pressure nitrogen of temperature by high pressure nitrogen being carried out pre-cooling when this utility model uses, by throttle effect the point of a knife temperature is further descended, reach the required ultralow temperature (below 140 ℃) of treatment rapidly at the point of a knife of cold therapy instrument cryoprobe.Overcome that liquid nitrogen system and argon helium system cold therapy instrument cost an arm and a leg, bulky, awkward shortcoming.This utility model also has structure simplifies, and is convenient to the characteristics that cooperate with other other elements of cold therapy instrument.
Description of drawings
Fig. 1 is a device connection diagram of the present utility model.
Fig. 2 is a structural representation of the present utility model.
The specific embodiment
In conjunction with Fig. 1, a kind of low temperature chilldown system of cold therapy instrument mainly is to be made of compressor 1, condenser 2, oil eliminator 4, vapour liquid separator 5 and heat exchanger 6, filter 7, throttling arrangement 15, evaporation throttling arrangement 13, vaporizer 8, refrigerant 9, refrigerant container 16, heat-exchange device 10 and pressure-regulating device 14.One end of compressor 1 links to each other with condenser 2 by pipeline, the other end of condenser 2 is connected with oil eliminator 4, oil eliminator 4 by pipeline respectively with vapour liquid separator 5, compressor 1 and heat exchanger 7 link to each other, one end of vapour liquid separator 5 is connected with the import of heat exchanger 6 by throttling arrangement 15, the other end of vapour liquid separator 5 is connected with the outlet of heat exchanger 6, heat exchanger 6 is also by filter 7, evaporation throttling arrangement 13 links to each other with vaporizer 8, and vaporizer 8 is communicated with compressor 1 through heat exchanger 6 by muffler, 14 height by electromagnetic valve and compressor 1 of pressure-regulating device, low-pressure channel links to each other.Compressed machine 1 compression of mix refrigerant becomes high pressure mixed gas during this utility model work, through condenser 2, behind the dew eliminating tube 3, by oil eliminator 4 compressor is got back in most of compressor oil separation, mix refrigerant separates liquefied refrigerant by vapour liquid separator 5 (wherein comprising multistage vapor-liquid separation), liquefaction part cold-producing medium enters counterflow heat exchanger 6 by multi-level throttle device 15 and (wherein comprises the multi-stage countercurrent heat exchanger, reach the sufficient purpose of heat exchange), fully low boiling point refrigerant enters vaporizer 8 by filter 7 evaporation throttling arrangements 13 after the heat exchange, finishes whole circulation thereby get back to compressor 1 by vaporizer 8 return-airs again.In addition, in vaporizer 8 outsides a refrigerant container 16 is installed, the inside is full of the coolant 9 of low melting point as ethanol or other low melting point medium, refrigeration is then by heat passage after the evaporator evaporation, at first coolant 9 is cooled off, make coolant 9 drop to certain low temperature after coagulation, one of refrigerant container 16 the insides installation and refrigeration system be heat-exchange device 10 fully independently, after high pressure nitrogen enters heat-exchange device 10 from import 12, high pressure nitrogen carries out heat exchange by heat-exchange device 10 and the refrigerant 9 that solidifies, when melting, refrigerant 9 absorbs heat, make outlet 11 gases that come out become low temperature high pressure gas (below 110 ℃), enter cutter head by the cold therapy instrument again, thereby produce a desired effect.
In conjunction with Fig. 2, concrete structure of the present utility model is made up of two parts up and down, heat exchanging part is settled on top, be respectively by housing 17, refrigerant container 16, heat exchanger 6, high pressure nitrogen import 12, outlet 11, vapour liquid separator 5 and be evenly distributed on refrigerant container 16 and heat-exchange system around insulation material etc. constitute.The unit part is settled in the bottom, is respectively to be made of shell holder 18, compressor 1, oil eliminator 4, condenser 2 and cooling blower, pressure-regulating device etc.
Claims (2)
1. the low temperature pre-cooler of a cold therapy instrument, it is characterized in that: an end of compressor (1) links to each other with condenser (2) by pipeline, the other end of condenser (2) is connected with oil eliminator (4), oil eliminator (4) by pipeline respectively with vapour liquid separator (5), compressor (1) and heat exchanger (6) link to each other, one end of vapour liquid separator (5) is connected with the import of heat exchanger (6) by throttling arrangement (15), the other end of vapour liquid separator (5) is connected with the outlet of heat exchanger (6), heat exchanger (6) is also by filter (7), evaporation throttling arrangement (13) links to each other with vaporizer (8), and vaporizer (8) is communicated with compressor (1) through heat exchanger (6) by muffler, and pressure-regulating device (14) is the height by electromagnetic valve and compressor (1) then, low-pressure channel links to each other.
2. the low temperature pre-cooler of a kind of cold therapy instrument according to claim 1, the concrete structure that it is characterized in that said whole pre-cooler is by dimerous up and down, heat exchanging part is settled on top, respectively by housing (17), refrigerant container (16), heat exchanger (6), high pressure nitrogen import (12), outlet (11), vapour liquid separator (5) and be evenly distributed on refrigerant container (16) and heat-exchange system around formations such as insulation material, the unit part is settled in the bottom, respectively by shell holder (18), compressor (1), oil eliminator (4), condenser (2) and cooling blower thereof, formations such as pressure-regulating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201107035U CN201085682Y (en) | 2007-06-11 | 2007-06-11 | Low-temperature precooling device of cold therapy instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201107035U CN201085682Y (en) | 2007-06-11 | 2007-06-11 | Low-temperature precooling device of cold therapy instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201085682Y true CN201085682Y (en) | 2008-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201107035U Expired - Fee Related CN201085682Y (en) | 2007-06-11 | 2007-06-11 | Low-temperature precooling device of cold therapy instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201085682Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103829999A (en) * | 2014-03-12 | 2014-06-04 | 童师颖 | Liquid nitrogen air minimally invasive cold knife cold and heat source system |
| RU2580167C1 (en) * | 2014-09-30 | 2016-04-10 | Общество с ограниченной ответственностью "Медкриология" (ООО "Медкриология") | Cryogenic sprayer |
| CN105902310A (en) * | 2016-04-11 | 2016-08-31 | 赵国江 | Cryosurgery device capable of achieving freezing and rewarming by adjusting gas pressure |
| RU176363U1 (en) * | 2017-05-11 | 2018-01-17 | Общество с ограниченной ответственностью "НАУЧНО-ПРОИЗВОДСТВЕННОЕ ОБЪЕДИНЕНИЕ МИРТ" (ООО "НПО МИРТ") | CRYOTHERAPEUTIC INSTALLATION |
| CN115105192A (en) * | 2022-07-01 | 2022-09-27 | 上海导向医疗系统有限公司 | A dual pre-cooling cryotherapy system compatible with multiple working modes |
-
2007
- 2007-06-11 CN CNU2007201107035U patent/CN201085682Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103829999A (en) * | 2014-03-12 | 2014-06-04 | 童师颖 | Liquid nitrogen air minimally invasive cold knife cold and heat source system |
| RU2580167C1 (en) * | 2014-09-30 | 2016-04-10 | Общество с ограниченной ответственностью "Медкриология" (ООО "Медкриология") | Cryogenic sprayer |
| CN105902310A (en) * | 2016-04-11 | 2016-08-31 | 赵国江 | Cryosurgery device capable of achieving freezing and rewarming by adjusting gas pressure |
| CN105902310B (en) * | 2016-04-11 | 2018-07-06 | 天津美电医疗科技有限公司 | Cryosurgery device for adjusting air pressure to realize freezing and rewarming |
| RU176363U1 (en) * | 2017-05-11 | 2018-01-17 | Общество с ограниченной ответственностью "НАУЧНО-ПРОИЗВОДСТВЕННОЕ ОБЪЕДИНЕНИЕ МИРТ" (ООО "НПО МИРТ") | CRYOTHERAPEUTIC INSTALLATION |
| CN115105192A (en) * | 2022-07-01 | 2022-09-27 | 上海导向医疗系统有限公司 | A dual pre-cooling cryotherapy system compatible with multiple working modes |
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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: 20080716 Termination date: 20120611 |