CN2937961Y - Low temp cold air device - Google Patents
Low temp cold air device Download PDFInfo
- Publication number
- CN2937961Y CN2937961Y CN 200620094982 CN200620094982U CN2937961Y CN 2937961 Y CN2937961 Y CN 2937961Y CN 200620094982 CN200620094982 CN 200620094982 CN 200620094982 U CN200620094982 U CN 200620094982U CN 2937961 Y CN2937961 Y CN 2937961Y
- Authority
- CN
- China
- Prior art keywords
- air
- heating cabinet
- temperature
- liquid nitrogen
- cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
Disclosed is a low temperature and cold air device which mainly comprises a vacuum evaporating pan, a heating cabinet, a lifting mechanism, an elevating control, a temperature measuring system, a heater and a fan. The device pressurizes the environmental air by the fan, and makes the pressed air blow on the liquid nitrogen surface through a blast pipe and churn up the liquid nitrogen. The device takes the saturated nitrogen vapor into the heating cabinet, meanwhile, solid matters produced by temperature drop in the air are tossed to the evaporating pan. The device heats the nitrogen and air mixtures to the set controlling temperature by leveraging the heating and temperature rising on the interface between the heating cabinet and the environment, realizing low temperature air supply and air source provision. The utility model can be provided to environmental geological conditions that simulate high-cold climate and situations that need low temperature cold air.
Description
Technical field
The low-temperature cold wind device be a kind of be to utilize the low temperature of liquid nitrogen to reduce the temperature of air, utilize surrounding air to heat that liquid nitrogen and saturated nitrogen become overheated nitrogen simultaneously and the device that obtains cold gas belongs to the low temperature field.
Background technology
The association product that liquid nitrogen is produced as system oxygen, temperature-196 ℃, nontoxic, ripe transportation, storing mode are arranged.Be cheap low-temperature receiver, a large amount of application is arranged, as ultralow temperature cooling cutting; The cold machine of liquid nitrogen system (causing) (patent No. 89202076): utilize liquid nitrogen in the casing of sealing, to freeze.(patent No.: 00222191): liquid nitrogen places in the container cartridge liquid nitrogen refrigerating apparatus, carries out workpiece cold treatment rapidly; Utilize medical device of freezing therapy or the like.The now existing Cryo Equipment of temperature in-20 ℃～-100 ℃ warm area, be to adopt two-stage refrigeration, whole cost is higher, as obtaining the cold wind of big air quantity, cost height not only, and can not avoid the evaporator section frosting during by evaporimeter and freeze when surrounding air, in addition, providing uneconomical and lose practicality aspect the big flow cold wind.As the short time, the application scenario of big flow utilizes cheap liquid nitrogen as low-temperature receiver, and the appropriate design evaporimeter carries out the liquid nitrogen vaporization temperature adjustment and overcome above-mentioned shortcoming and defect.
Summary of the invention
The purpose of this utility model provides a kind of low-temperature cold wind device, utilizes the low temperature of liquid nitrogen to reduce the temperature of air, utilizes surrounding air to heat liquid nitrogen simultaneously and saturated nitrogen becomes overheated nitrogen and obtains cold gas.
The purpose of this utility model is achieved through the following technical solutions.
The low-temperature cold wind device mainly is made up of vacuum evaporation dish, heating cabinet, elevating mechanism, lifting control, temp measuring system, heater, air blast.Heating cabinet is made up of last heating cabinet and following heating cabinet two parts, and last heating cabinet wraps in down on the heating cabinet, staggered contact between two casees, and last heating cabinet hangs by elevating mechanism, and the vacuum evaporation dish is placed on down in the heating cabinet, and the vacuum evaporation dish is the stainless-steel vacuum dish.Air blast is settled separately, is linked to each other with heating cabinet by pipeline, and heater is arranged on the cold wind exit of heating cabinet.As the temperature control part of cold wind, temperature adjustment realizes that in two steps the first step goes up heating cabinet by stepper motor or manual elevating mechanism drive and moves, and regulates heat exchange area and carries out temperature adjustment; Do not reach in first step temperature adjustment and to start near the heater that is arranged on the cold wind outlet when requiring and assist temperature adjustment, the wind exit is provided with temperature transducer, according to setting value start-stop elevating mechanism and heater.Elevating mechanism adopts gear drive and stepper motor to form.
The operation principle of this device is: evaporate on the evaporating surface of liquid nitrogen in evaporating pan, the air capacity decision that evaporation rate is brought into by air blast, air guide liquid nitrogen surface, liquid nitrogen is implemented disturbance, bring the saturated nitrogen of evaporation into heating cabinet, the solid that produces because of cooling in the air is thrown in the evaporating pan simultaneously, utilizes the contact-making surface heat temperature raising of heating cabinet and environment, nitrogen and air mixture are heated to the control temperature of setting, realize low temperature air feed source of the gas.
The beneficial effects of the utility model are:
1, association product one liquid nitrogen that has utilized system oxygen to produce is compared with the two-stage refrigeration equipment of existing-20 ℃～-100 ℃ of warm areas, and application cost is cheap, and temperature adjusting is convenient, has avoided needing in the two-stage refrigeration equipment problem that defrosts, dehumidifies.
2,,, can provide the cold wind source of the gas of big air quantity more stable, certain temperature range by regulation and control according to work, test requirements document.
3, the low-temperature cold wind source of the gas scope of application of big air quantity is wider, can be used to simulate the cold wind weather of extremely frigid zones, can be used as the source of the gas of the mixed earth coagulation experiment under frozen soil experiment and the puna, also can be used as the occasion that other need low-temperature cold wind.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.1 frame among the figure, 2 times heating cabinets, 3 vacuum evaporation dishes, 4 liquid nitrogen, 5 air blasts, heating cabinet on 6,7 ajutages, the outlet of 8 liquid nitrogen, 9 elevating mechanisms, 10 stepper motors, 11 sensors, 12 air outlets, 13 heaters, 14 lifting control and temp measuring systems.
The specific embodiment
The low-temperature cold wind device produces the step of cold air: at first be pressed in the heating cabinet surrounding air and through vacuum evaporation dish 3 tops that are placed on heating cabinet by air blast 5 by ajutage.Liquid nitrogen upper surface in the vacuum evaporation dish 3 is an evaporating surface, evaporates under the disturbance of surrounding air.By the nitrification vapor mixing of the air of cooled with liquid nitrogen and evaporation, formation is higher than subzero 196 ℃ cold air.Heating cabinet is made by stainless steel or copper material, and the heating cabinet outer surface is exposed in the ambient air, and mixed cold air contacts with the heating cabinet inwall, and heat exchange takes place, and mixes Quilt with air conditioning and heats to setting value.Heating cabinet is made up of last heating cabinet and following heating cabinet two parts, and last heating cabinet can be regulated by elevating mechanism 9, realizes moving up and down.Moving up and down of last heating cabinet is actually adjusting cold air and environment exchange area, reaches the purpose of temperature adjustment with this.Temperature control part as cold wind, temperature adjustment realizes in two steps, the first step drives upward by stepper motor 10 and manual elevating mechanism 9, and heating cabinet 2 moves, regulate heat exchange area and carry out temperature adjustment, first step temperature adjustment do not reach start when requiring be arranged on the cold wind outlet near heater 13 assist temperature adjustment, the wind exit is provided with sensor 11, according to setting value start-stop elevating mechanism 9 and heater 13.Elevating mechanism 9 adopts gear drive and stepper motor 10 to form.
Certain water capacity is generally arranged in the air, in the warm area of this device work, air themperature has reached below the dew-point temperature already, this device blows to liquid nitrogen surface with surrounding air pressurization back by ajutage by air blast, its advantage is: can realize disturbance to the liquid nitrogen surface on the one hand, the airborne moisture that breaks away from ajutage is cooled and freezes, and fall into evaporating pan by the gravity effect.The dry air of cooling flows out after rising to air outlet under the effect of air blast blast.
From the mixing cold air that air outlet comes out, still be air in fact, only the content of nitrogen is higher, and oxygen content is lower, and humidity is less.Can be used to simulate the cold wind weather of extremely frigid zones; Can be used as the source of the gas of the mixed earth coagulation experiment under frozen soil experiment and the puna.Also can be used as the occasion that other need low-temperature cold wind.The invention provides a cold gas source of the gas, can construct a low temperature environment weather more easily.
Claims (1)
1, the low-temperature cold wind device is mainly by vacuum evaporation dish (3), heating cabinet, elevating mechanism (9), lifting control (14), temp measuring system (14), heater (13) and air blast (5) are formed, it is characterized in that: heating cabinet is made up of last heating cabinet (6) and following heating cabinet (2) two parts, last heating cabinet (6) wraps in down on the heating cabinet (2), staggered contact between two casees, last heating cabinet (6) hangs by elevating mechanism (9), vacuum evaporation dish (3) is placed on down in the heating cabinet (2), air blast (5) is linked to each other with heating cabinet by pipeline, and heater (13) is arranged on the cold wind exit of heating cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620094982 CN2937961Y (en) | 2006-01-11 | 2006-01-11 | Low temp cold air device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620094982 CN2937961Y (en) | 2006-01-11 | 2006-01-11 | Low temp cold air device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2937961Y true CN2937961Y (en) | 2007-08-22 |
Family
ID=38361990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620094982 Expired - Fee Related CN2937961Y (en) | 2006-01-11 | 2006-01-11 | Low temp cold air device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2937961Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896824A (en) * | 2015-05-21 | 2015-09-09 | 成都科莱斯低温设备有限公司 | Liquid nitrogen instant freezer |
| CN107627148A (en) * | 2017-10-25 | 2018-01-26 | 中国航发航空动力股份有限公司 | A kind of compressed air and liquid nitrogen combination cooling device |
| CN114562836A (en) * | 2022-03-21 | 2022-05-31 | 上海交通大学 | Small supercooled liquid nitrogen acquisition device with controllable pressure and supercooling degree |
-
2006
- 2006-01-11 CN CN 200620094982 patent/CN2937961Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896824A (en) * | 2015-05-21 | 2015-09-09 | 成都科莱斯低温设备有限公司 | Liquid nitrogen instant freezer |
| CN107627148A (en) * | 2017-10-25 | 2018-01-26 | 中国航发航空动力股份有限公司 | A kind of compressed air and liquid nitrogen combination cooling device |
| CN114562836A (en) * | 2022-03-21 | 2022-05-31 | 上海交通大学 | Small supercooled liquid nitrogen acquisition device with controllable pressure and supercooling degree |
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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: 20070822 Termination date: 20100211 |