CN201145497Y - Tail gas heat exchanger of liquid nitrogen auxiliary refrigeration freezing device - Google Patents
Tail gas heat exchanger of liquid nitrogen auxiliary refrigeration freezing device Download PDFInfo
- Publication number
- CN201145497Y CN201145497Y CNU2007200770651U CN200720077065U CN201145497Y CN 201145497 Y CN201145497 Y CN 201145497Y CN U2007200770651 U CNU2007200770651 U CN U2007200770651U CN 200720077065 U CN200720077065 U CN 200720077065U CN 201145497 Y CN201145497 Y CN 201145497Y
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- nitrogen
- liquid nitrogen
- outer casing
- heat exchange
- shell
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Abstract
The utility model relates to an exhaust gas heat exchange device of liquid nitrogen auxiliary refrigeration freeze-drying equipment. The exhaust gas heat exchange device is characterized in that: the device consists of an outer casing, a baffle board, heat exchange pipes, a nitrogen exhaust port, a temperature measuring port, a heat conducting oil inlet, a heat conducting oil outlet and a nitrogen inlet; the parallel heat exchange pipes pass through the baffle board and are arranged inside the outer casing; the nitrogen exhaust port is arranged at one side of the upper end of the outer casing; the heat conducting oil inlet and the heat conducting oil outlet are arranged at both sides of the lower end of the outer casing; and the nitrogen inlet is arranged at the end part of the side face of the outer casing. The exhaust gas heat exchange device has the advantage of making full use of the cold energy contained in the nitrogen discharged in the air during liquid nitrogen gasification.
Description
Technical field
The utility model relates to a kind of tail gas heat-exchanger rig of liquid nitrogen auxiliary cooling freeze-drier, relates in particular to a kind of handle and comes from the nitrogen tail gas of liquid nitrogen vacuum freeze drier discharge and the heat exchanger that circulating heat conduction oil carries out heat exchange, belongs to technical field of heat exchangers.
Background technology
Vacuum freeze drier utilizes the freeze drying principle exactly: with hydrous matter lower the temperature be frozen into solid-state, under the condition of vacuum, make then water vapour directly from solid-state distillation come out the machine that is used for the freeze-drying hydrous matter that manufactures and designs out.
At present existing vacuum freeze drier divides from refrigeration modes and mainly is divided into two big classes: 1, utilize the compressor of cold-producing medium freon to freeze; 2, utilizing liquid nitrogen gasification to absorb heat freezes.The utility model relates to second kind of refrigeration modes.
Exist following shortcoming and utilize liquid nitrogen gasification to freeze at present:
1, liquid nitrogen gasification is discharged to the cold that is comprised in the nitrogen of atmosphere and can not be fully utilized, be discharged in vain in the atmosphere,
2, in the technical process of freeze-drying insulation, require temperature to want constant under some temperature, but owing to will be absorbed certain heat by the distillation of freeze-drying article, for the constancy that keeps temperature just must be provided with electrical heating on process pipeline, but electrical heating is difficult to accurate control, cause the recycle oil temperature in the process pipeline to raise sometimes, usually way is to tell a ramuscule with the recycle oil in the cold pipeline to mix the cold steady temperature of coming in electrically heated this pipeline to having, but just require to be furnished with control valve in the middle of this, and this valve costs an arm and a leg.
Summary of the invention
The purpose of this utility model provides a kind of tail gas heat-exchanger rig that liquid nitrogen gasification is discharged into the liquid nitrogen auxiliary cooling freeze-drier of the cold that is comprised in the nitrogen of atmosphere that makes full use of
For realizing above purpose, the technical solution of the utility model provides a kind of tail gas heat-exchanger rig of liquid nitrogen auxiliary cooling freeze-drier, it is characterized in that, form by shell, deflection plate, heat exchanger tube, nitrogen row mouth, temperature-measuring port, heat conductive oil inlet, conduction oil outlet and nitrogen inlet, parallel heat exchanger tube passes deflection plate and is located in the shell, nitrogen row mouth is located at a side of shell upper end, the both sides of the lower end of shell are located in heat conductive oil inlet, conduction oil outlet, and nitrogen inlet is located at the shell lateral ends.
The utility model is that cold nitrogen and heat conduction recycle oil from the discharging of liquid nitrogen vacuum freeze drier are carried out heat exchange, the nitrogen that liquid nitrogen gasification is discharged carries out the secondary utilization, utilized liquid nitrogen fully, reduced the consumption of liquid nitrogen, more accurate thermostatic control is provided, improve production efficiency effectively, also reduced manufacturing cost simultaneously.
The utility model has the advantages that making full use of liquid nitrogen gasification is discharged into the cold that is comprised in the nitrogen of atmosphere.
Description of drawings
Fig. 1 is a kind of tail gas heat-exchanger rig structural representation of liquid nitrogen auxiliary cooling freeze-drier.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, tail gas heat-exchanger rig structural representation for a kind of liquid nitrogen auxiliary cooling freeze-drier, the tail gas heat-exchanger rig of described a kind of liquid nitrogen auxiliary cooling freeze-drier is made up of shell 1, deflection plate 2, heat exchanger tube 3, nitrogen row mouth 4, temperature-measuring port 5, heat conductive oil inlet 6, conduction oil outlet 7 and nitrogen inlet 8, parallel heat exchanger tube 3 passes deflection plate 2 and is located in the shell 1, nitrogen row mouth 4 is located at a side of shell 1 upper end, the both sides of the lower end of shell 1 are located in heat conductive oil inlet 6, conduction oil outlet 7, and nitrogen inlet 8 is located at shell 1 lateral ends.
During work, the nitrogen that the freeze dryer gasification is discharged enters in the right side cavity volume of heat exchanger from nitrogen inlet 8, be divided into multiply then and enter into heat exchanger tube 3, the cavity volume internal exchange that arrives the left side again is altogether from nitrogen row mouthful 4 discharges, the shell of conduction oil shell side 1 outside heat conductive oil inlet 6 enters into and deflection plate 2, conduction oil by deflection plate about in the of 2 baffling move ahead, increase flow process, add opposite with the flow of nitrogen gas direction, carry out sufficient heat exchange between these two, utilize the cold in the conduction oil absorption nitrogen, flow out from conduction oil outlet 7 then.
In the process of this heat exchanger apparatus, do not need control valve, and it is very low to make this heat exchanger apparatus cost, the more important thing is that not need the additive decrementation liquid nitrogen to ooze cold, from the process of long-term use, just can save a lot of liquid nitrogen, thereby reduce use cost.
Claims (1)
1. the tail gas heat-exchanger rig of a liquid nitrogen auxiliary cooling freeze-drier, it is characterized in that, form by shell (1), deflection plate (2), heat exchanger tube (3), nitrogen row mouthful (4), temperature-measuring port (5), heat conductive oil inlet (6), conduction oil outlet (7) and nitrogen inlet (8), parallel heat exchanger tube (3) passes deflection plate (2) and is located in the shell (1), nitrogen row mouthful (4) is located at a side of shell (1) upper end, the both sides of the lower end of shell (1) are located in heat conductive oil inlet (6), conduction oil outlet (7), and nitrogen inlet (8) is located at shell (1) lateral ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200770651U CN201145497Y (en) | 2007-12-24 | 2007-12-24 | Tail gas heat exchanger of liquid nitrogen auxiliary refrigeration freezing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200770651U CN201145497Y (en) | 2007-12-24 | 2007-12-24 | Tail gas heat exchanger of liquid nitrogen auxiliary refrigeration freezing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145497Y true CN201145497Y (en) | 2008-11-05 |
Family
ID=40082380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200770651U Expired - Lifetime CN201145497Y (en) | 2007-12-24 | 2007-12-24 | Tail gas heat exchanger of liquid nitrogen auxiliary refrigeration freezing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201145497Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968677A (en) * | 2014-05-23 | 2014-08-06 | 苏州市金翔钛设备有限公司 | Condenser |
| CN107543433A (en) * | 2017-07-28 | 2018-01-05 | 倪飞 | A kind of tail gas heat-exchanger rig of liquid nitrogen auxiliary refrigeration freezing |
| CN107940574A (en) * | 2017-12-01 | 2018-04-20 | 上海原能细胞生物低温设备有限公司 | Liquid nitrogen cooling and dehumidifying device |
-
2007
- 2007-12-24 CN CNU2007200770651U patent/CN201145497Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968677A (en) * | 2014-05-23 | 2014-08-06 | 苏州市金翔钛设备有限公司 | Condenser |
| CN107543433A (en) * | 2017-07-28 | 2018-01-05 | 倪飞 | A kind of tail gas heat-exchanger rig of liquid nitrogen auxiliary refrigeration freezing |
| CN107940574A (en) * | 2017-12-01 | 2018-04-20 | 上海原能细胞生物低温设备有限公司 | Liquid nitrogen cooling and dehumidifying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081105 |
|
| CX01 | Expiry of patent term |