CN116105467A - Freeze dryer using compressor exhaust for drying - Google Patents
Freeze dryer using compressor exhaust for drying Download PDFInfo
- Publication number
- CN116105467A CN116105467A CN202211638407.8A CN202211638407A CN116105467A CN 116105467 A CN116105467 A CN 116105467A CN 202211638407 A CN202211638407 A CN 202211638407A CN 116105467 A CN116105467 A CN 116105467A
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- Prior art keywords
- compressor
- heat recovery
- drying
- condenser
- coil
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- 238000001035 drying Methods 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims description 28
- 238000001704 evaporation Methods 0.000 claims description 22
- 230000008020 evaporation Effects 0.000 claims description 12
- 238000004108 freeze drying Methods 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000005485 electric heating Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 239000003507 refrigerant Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000859 sublimation Methods 0.000 description 7
- 230000008022 sublimation Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010836 blood and blood product Substances 0.000 description 1
- 229940125691 blood product Drugs 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000009777 vacuum freeze-drying Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to the technical field of freeze-drying machines for drying exhaust gas of compressors, and discloses a freeze-drying machine for drying exhaust gas of compressors, which comprises a compressor and a cylinder body, and further comprises: the condenser, the capillary tube and the vacuum pump are sequentially connected in series through pipelines to form a loop; the pipeline between the compressor and the condenser is communicated with the inlet end and the outlet end of the heat recovery coil; the cylinder is connected with a vacuum pump, and an electronic expansion valve is arranged on a pipeline at the outlet end of the heat recovery coil. The invention does not need the input of extra electric energy, reduces the energy consumption of equipment and also avoids the defect of threading of the electric heating plate.
Description
Technical Field
The invention relates to the technical field of freeze-drying machines, in particular to a freeze-drying machine for drying by utilizing exhaust of a compressor.
Background
Freeze-dryer originated from the vacuum freeze-drying technology of the 20 th century of the 19 th century, and was widely used in the fields other than the fields of medicine, biological products, foods, blood products, and active substances, into the 21 st century.
The current small-size domestic or commercial freeze-drying equipment adopts the electrical heating board of laminating in tray bottom direct heating in the sublimation drying stage, and this kind of most direct shortcoming of doing is consume extra electric energy, causes the energy consumption of equipment to rise. In addition, the power line of the electric heating plate needs to penetrate from the inside of the cylinder to the outside of the cylinder, and special connecting plugs are needed, so that the equipment structure is complex and the cost is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the freeze dryer which utilizes the exhaust of the compressor to dry, does not need the input of extra electric energy, reduces the energy consumption of equipment and also avoids the defect of threading an electric heating plate.
The invention provides the following technical scheme:
a freeze dryer for drying by utilizing exhaust gas of a compressor, comprising the compressor and a cylinder, and further comprising: a condenser, a capillary tube and a vacuum pump,
an evaporation coil is fixed at the top of the inner wall of the cylinder, a heat recovery coil is fixed at the bottom of the inner wall of the cylinder, a material tray is lapped at the top of the heat recovery coil, and the compressor, the condenser, the capillary tube and the evaporation coil are sequentially connected in series through pipelines to form a loop; the pipeline between the compressor and the condenser is communicated with the inlet end and the outlet end of the heat recovery coil; the cylinder is connected with a vacuum pump, and an electronic expansion valve is arranged on a pipeline at the outlet end of the heat recovery coil.
Preferably: the air inlet of the evaporating coil is fixedly connected with the outlet of the capillary tube, and the air outlet of the evaporating coil is fixedly connected with the air return port of the compressor.
Preferably: the inlet end of the heat recovery coil is connected with the outlet of the compressor, and the outlet end of the heat recovery coil is connected with the inlet end of the condenser through the electronic expansion valve.
Preferably: and the inlet of the electronic expansion valve is fixedly connected with the outlet end of the heat recovery coil, and the outlet of the electronic expansion valve is fixedly connected with the inlet of the condenser.
Compared with the prior art, the invention has the following beneficial effects:
this utilize compressor exhaust drying's freeze dryer, work through the compressor for the compressor can produce heat, is connected through compressor and evaporating coil, makes can carry out the sublimation drying for the inside of device, has reached the purpose of drying the inside material of the device, has improved the device and has reached the purpose of environmental protection to the utilization ratio of energy, has avoided the problem that the energy consumption that causes when heating with the electrical heating board risees. Through evaporating coil and compressor direct connection for can sublimate the drying to the device through the waste heat that the compressor produced, need not use the electrical heating board to heat, reduce the electric wire of electrical heating board's arrangement, prevent the electrical heating board cable and lead to the fact the structure complicacy and reveal the increase of risk when passing the barrel, improved the seal of the device, strengthened the security of the device.
Drawings
FIG. 1 is a connection structure diagram of a freeze dryer using compressor exhaust for drying according to the present invention;
fig. 2 is a schematic view of the internal structure of the cylinder according to the present invention.
In the figure: 1. a compressor; 2. a condenser; 3. a capillary tube; 4. an electronic expansion valve; 5. a heat recovery coil; 6. an evaporation coil; 7. a material tray; 8. a cylinder; 9. and a vacuum pump.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, a freeze dryer using compressor exhaust drying is a small-sized freeze dryer, and comprises a compressor 1 and a cylinder 8, wherein a condenser 2 is fixedly assembled at one end of an output pipe of the compressor 1, a capillary tube 3 is assembled on an air supply pipe of the condenser 2, a vacuum pump 9 is arranged on the right side of the cylinder 8, an evaporation coil 6 is fixedly assembled at the top of the inner wall of the cylinder 8, a heat recovery coil 5 is fixedly assembled at the bottom of the inner wall of the cylinder 8, a material tray 7 is lapped at the top of the heat recovery coil 5, an electronic expansion valve 4 is fixedly assembled on a pipeline at the outlet end of the heat recovery coil 5, and the device can be sublimated and dried by waste heat generated by the compressor 1 through the provided compressor 1, so that the utilization rate of energy is improved.
The compressor 1, the condenser 2, the capillary tube 3 and the evaporating coil 6 are connected into a whole through pipelines, and a refrigerating system is formed.
The evaporation coil 6 is installed at the top of the inner wall of the barrel 8, the air inlet of the evaporation coil 6 is fixedly connected with the outlet of the capillary tube 3, the air outlet of the evaporation coil 6 is fixedly connected with the air return port of the compressor 1, and through the structure, the evaporation coil 6 is used for cooling materials in the pre-cooling stage of the freeze-drying process and supplementing ice in the sublimation drying stage.
The heat recovery coil 5 is installed at the bottom of the inner wall of the barrel 8, the inlet end of the heat recovery coil 5 is fixedly connected with the outlet of the compressor 1, the outlet end of the heat recovery coil 5 is fixedly connected with the inlet of the electronic expansion valve 4, and through the structure, the heat recovery coil 5 is used for recovering waste heat exhausted by the compressor 1, heat is provided for materials in the drying stage of the freeze-drying process, and ice in the materials absorbs heat, sublimates and dries into water vapor.
The electronic expansion valve 4 is installed on the outlet pipeline of the heat recovery coil 5, the inlet of the electronic expansion valve 4 is fixedly connected with the outlet end of the heat recovery coil 5, the outlet of the electronic expansion valve 4 is fixedly connected with the inlet of the condenser 2, and through the structure, the electronic expansion valve 4 is used for adjusting the flow of the refrigerant entering the heat recovery coil 5 so as to control the sublimation temperature of the material.
The material tray 7 is arranged on the heat recovery coil 5, so that materials are arranged in the material tray 7 during freeze-drying, the material tray 7 is arranged on the heat recovery coil 5, and in the pre-freezing stage, the materials in the material tray 7 absorb the cold energy released by the evaporation coil 6 to freeze the water in the materials into ice; in the sublimation drying stage, the material in the material tray 7 absorbs heat in the heat recovery coil 5, and sublimates ice in the material into water vapor in a vacuum environment.
The working principle is that the prefreezing stage provides the cooling capacity for the cylinder 8, reduces the temperature in the cylinder 8, and freezes the water in the material into solid state. At this time, the compressor 1 is turned on, the electronic expansion valve 4 is fully closed, the fan of the condenser 2 is turned on, and the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 enters the condenser 2 through the pipeline and is condensed into liquid refrigerant in the condenser 2. The liquid refrigerant is throttled by the capillary tube 3 to become a low-temperature low-pressure liquid refrigerant, and finally the low-temperature low-pressure liquid refrigerant absorbs heat in the cylinder 8 in the evaporating coil 6, and finally the refrigerant vapor is sucked by the compressor 1 to continue the refrigeration cycle.
The vacuumizing stage is to reach the temperature and pre-freezing time required by the freeze-drying process of the materials in the material tray 7 after the pre-freezing stage is finished. At this time, the compressor 1 is started, the electronic expansion valve 4 is fully closed, the fan of the condenser 2 is started, the vacuum pump 9 is started, the pressure in the cylinder 8 is pumped to the vacuum degree required by the freeze-drying process, and the vacuum pump 9 is kept in a state of being always started until the freeze-drying is finished.
The sublimation drying stage provides heat for the material tray 7 while providing cold for the cylinder 8, so that the material in the material tray 7 absorbs heat, ice in the material is sublimated into water vapor, and then the water vapor is captured by the evaporating coil 6 to be changed into ice. At this time, the compressor 1 is started, the fan of the condenser 2 is started, the vacuum pump 9 is started, and the opening of the electronic expansion valve 4 is regulated according to the sublimation temperature required by the freeze-drying process, so that the high-temperature and high-pressure refrigerant steam discharged by the compressor 1 enters the heat recovery coil 5, and the purpose of heating the materials in the material tray 7 is achieved.
The defrosting stage is to provide heat for the cylinder 8 after the freeze-drying is finished to melt the ice on the evaporating coil 6 into water, and then discharge the water into the cylinder 8. At this time, the compressor 1 is opened, the electronic expansion valve 4 is fully opened, the fan of the condenser 2 is closed, the vacuum pump 9 is closed, high-temperature and high-pressure refrigerant vapor discharged from the compressor 1 enters the heat recovery coil 5 in a large amount, and the heat of the heat recovery coil 5 is transferred to the ice on the evaporation coil 6 through heat convection and heat radiation, so that the ice is melted into water, and finally the water is discharged out of the cylinder 8.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles of the present invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a freeze dryer that utilizes compressor exhaust to dry, includes compressor (1) and barrel (8), its characterized in that: further comprises: a condenser (2), a capillary tube (3) and a vacuum pump (9),
an evaporation coil (6) is fixed at the top of the inner wall of the cylinder (8), a heat recovery coil (5) is fixed at the bottom of the inner wall of the cylinder (8), a material tray (7) is lapped at the top of the heat recovery coil (5), and the compressor (1), the condenser (2), the capillary tube (3) and the evaporation coil (6) are sequentially connected in series through pipelines to form a loop; the pipeline between the compressor (1) and the condenser (2) is communicated with the inlet end and the outlet end of the heat recovery coil pipe (5); the cylinder body (8) is connected with a vacuum pump (9), and an electronic expansion valve (4) is arranged on a pipeline at the outlet end of the heat recovery coil pipe (5).
2. A freeze dryer for drying with compressor discharge air according to claim 1, wherein: the air inlet of the evaporating coil (6) is fixedly connected with the outlet of the capillary tube (3), and the air outlet of the evaporating coil (6) is fixedly connected with the air return port of the compressor (1).
3. A freeze dryer for drying with compressor discharge air according to claim 1, wherein: the inlet end of the heat recovery coil (5) is connected with the outlet of the compressor (1), and the outlet end of the heat recovery coil (5) is connected with the inlet end of the condenser (2) through the electronic expansion valve (4).
4. A freeze dryer for drying by compressor discharge air according to claim 3 wherein: the inlet of the electronic expansion valve (4) is fixedly connected with the outlet end of the heat recovery coil pipe (5), and the outlet of the electronic expansion valve (4) is fixedly connected with the inlet of the condenser (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211638407.8A CN116105467A (en) | 2022-12-19 | 2022-12-19 | Freeze dryer using compressor exhaust for drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211638407.8A CN116105467A (en) | 2022-12-19 | 2022-12-19 | Freeze dryer using compressor exhaust for drying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116105467A true CN116105467A (en) | 2023-05-12 |
Family
ID=86257243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211638407.8A Pending CN116105467A (en) | 2022-12-19 | 2022-12-19 | Freeze dryer using compressor exhaust for drying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116105467A (en) |
-
2022
- 2022-12-19 CN CN202211638407.8A patent/CN116105467A/en active Pending
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