CN214159111U - Energy-saving freeze dryer - Google Patents
Energy-saving freeze dryer Download PDFInfo
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- CN214159111U CN214159111U CN202022445678.4U CN202022445678U CN214159111U CN 214159111 U CN214159111 U CN 214159111U CN 202022445678 U CN202022445678 U CN 202022445678U CN 214159111 U CN214159111 U CN 214159111U
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- compressed air
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- 238000001816 cooling Methods 0.000 claims abstract description 31
- 238000005057 refrigeration Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 55
- 238000001914 filtration Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 238000009415 formwork Methods 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 70
- 239000003507 refrigerant Substances 0.000 description 9
- 239000000112 cooling gas Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides an energy-saving freeze dryer belongs to desiccator technical field. It has solved the poor problem of current desiccator cooling effect. The energy-saving freeze dryer comprises an evaporator, a refrigeration compressor, a condenser and an expansion valve, wherein the evaporator, the refrigeration compressor, the condenser and the expansion valve are sequentially connected through a pipeline to form a working loop, the evaporator is also connected with an air-air heat exchanger used for compressed air to enter the evaporator, a compressed air cooler used for secondary cooling of the compressed air is connected between the air-air heat exchanger and the evaporator, and the air-air heat exchanger, the compressed air cooler and the evaporator are connected through pipelines to form a cooling loop. The utility model has the advantage of good cooling effect.
Description
Technical Field
The utility model belongs to the technical field of the desiccator, a energy-saving freeze dryer is related to.
Background
The dryer is a cooling device for compressed air, and the dryer enables water vapor in the compressed air to be condensed into liquid drops, so that the aim of reducing moisture content is fulfilled. The condensed liquid drops are discharged out of the machine through the automatic drainage system, and the secondary condensation phenomenon cannot be generated as long as the environment temperature of the downstream pipeline at the outlet of the drying machine is not lower than the dew point temperature of the outlet of the evaporator.
Most of the existing domestic freeze dryers have the following problems and disadvantages: the compressed air is higher from the air compressor machine exhaust temperature, and the evaporimeter that directly gets into the refrigerator can make the desiccator load increase, to this problem, has announced on the chinese patent network that the name is: the utility model discloses a utility model patent of intelligence humidity control unit (application number 201920258638.3), it reduces the compressed air temperature through addding the gas regenerator and thereby reduces refrigeration load, but the compressed air temperature that gets into the evaporimeter is still higher, and refrigerator load is great.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide an energy-saving freeze dryer that can multistage cooling.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model provides an energy-saving freeze dryer, includes evaporimeter, compressor, condenser and expansion valve, evaporimeter, compressor, condenser and expansion valve connect gradually through the pipeline and form work circuit, the evaporimeter on still be connected with the air-gas heat exchanger who is used for compressed air to enter into to the evaporimeter, air-gas heat exchanger and evaporimeter between be connected with the compressed air cooler who is used for compressed air secondary cooling, air-gas heat exchanger, compressed air cooler, evaporimeter between form cooling circuit through the pipe connection.
In the energy-saving freeze dryer, a gas-liquid separator and a precision filter are arranged between the evaporator and the compressed air cooler, the gas-liquid separator and the precision filter are connected in series on a pipeline, and the gas-liquid separator is arranged at one side close to the gas-liquid separator.
In the energy-saving freeze dryer, the compressed air cooler is provided with a gas inlet for connecting the gas-gas heat exchanger and a gas outlet connected with the evaporator, the gas inlet is arranged above the gas outlet, the compressed air cooler is internally provided with a cooling pipe which is bent and coiled, the cooling pipe is connected with the gas inlet and the gas outlet, and the end part of the cooling pipe, which is close to the gas inlet, is provided with a buffer section which is formed by upward bending.
In the energy-saving freeze dryer, the gas-gas heat exchanger comprises an exchanger shell, a plurality of cold runners are arranged in the gas-gas heat exchanger, a backflow port communicated with the evaporator and the inside of the cold runners and a gas outlet used for discharging gas in the cold runners are arranged on the gas-gas heat exchanger, and a first gas inlet matched with a gas inlet in the compressed air cooler is further arranged on the gas-gas heat exchanger.
In the energy-saving freeze dryer, the plurality of cold runners are vertically arranged inside the exchanger shell along the length direction of the vertical exchanger shell, and the cold runners are arranged at the center of the exchanger shell.
In the energy-saving freeze dryer, the first air inlet and the gas inlet are arranged on the side wall of the gas-gas heat exchanger, and the air inlet and the gas inlet are respectively located on two sides of the cold runner.
In the energy-saving freeze dryer, a filtering drainage structure is arranged between the gas-gas heat exchanger and the evaporator, one end of the filtering drainage structure is used for draining liquid water out of the equipment, and the other end of the filtering drainage structure is communicated with the gas-gas heat exchanger and the evaporator to reflux gas.
In the energy-saving freeze dryer, the filtering and draining structure includes a liquid-gas separator and a draining valve connected to the liquid-gas separator.
In the energy-saving freeze dryer, a gas-liquid mixer is arranged between the expansion valve and the evaporator, one end of the gas-liquid mixer is communicated with the expansion valve, and the other end of the gas-liquid mixer is respectively connected to the refrigeration compressor and the evaporator.
In the energy-saving freeze dryer, a liquid separator is further arranged between the expansion valve and the evaporator, and the liquid separator is arranged on a branch path between the gas-liquid mixer and the evaporator.
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses a be provided with compressed air cooler in the cooling circuit, compressed air cooler intercommunication gas-gas heat exchanger and evaporimeter further reduce the temperature before compressed air gets into the evaporimeter through compressed air cooler to reduce refrigeration load, reach energy-conserving purpose.
2. The utility model discloses a be provided with vapour and liquid separator and precision filter between evaporimeter and the compressed air cooler, filter impurity and moisture in the compressed air through vapour and liquid separator and precision filter, improve gaseous purity.
3. The utility model discloses a be provided with between gas-gas heat exchanger and the evaporimeter and filter drainage structure, carry out the drainage through setting up and filtering drainage structure, guarantee the unblocked of drainage.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a structural connection structure diagram of the working circuit of the present invention.
Fig. 3 is a structural connection structure diagram of the cooling circuit of the present invention.
In the figure, 1, an evaporator; 2. a refrigeration compressor; 3. a condenser; 4. an expansion valve; 5. A gas-gas heat exchanger; 6. a compressed air cooler; 7. a gas-liquid separator; 8. a precision filter; 9. a gas inlet; 10. a gas outlet; 11. an exchanger housing; 12. a cold runner; 13. a return port; 14. an air outlet; 15. a first air inlet; 16. a filtering and draining structure; 17. a liquid-gas separator; 18. a drain valve; 19. a gas-liquid mixer; 20. a liquid separator; 21. a cooling tube; 22. and a buffer section.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, an energy-saving freeze dryer comprises an evaporator 1, a refrigeration compressor 2, a condenser 3 and an expansion valve 4, wherein the evaporator 1, the refrigeration compressor 2, the condenser 3 and the expansion valve 4 are sequentially connected through a pipeline to form a working circuit, the evaporator 1 is further connected with an air-air heat exchanger 5 for compressed air to enter the evaporator 1, a compressed air cooler 6 for secondary cooling of the compressed air is connected between the air-air heat exchanger 5 and the evaporator 1, and the air-air heat exchanger 5, the compressed air cooler 6 and the evaporator 1 are connected through pipelines to form a cooling circuit.
In the present embodiment, the cooling circuit is provided with a compressed air cooler 6, the compressed air cooler 6 communicates the air-to-air heat exchanger 5 with the evaporator 1, and the temperature of the compressed air before entering the evaporator 1 is further reduced by the compressed air cooler 6, so that the refrigeration load is reduced, and the purpose of energy saving is achieved.
In the present embodiment, a gas-liquid separator 7 and a precision filter 8 are provided between the evaporator 1 and the compressed air cooler 6, the gas-liquid separator 7 and the precision filter 8 are connected in series to each other on the pipeline, and the gas-liquid separator 7 is provided on the side close to the gas-liquid separator 7. Impurities and moisture in the compressed air are filtered through the gas-liquid separator 7 and the precision filter 8, and the purity of the gas is improved.
It will be understood by those skilled in the art that the gas-liquid separator 7 and the ultrafilter 8 are commercially available products, and for the purpose of the prior art, the filter of the ultrafilter 8 has a filter element of 5 μm to 20 μm in this embodiment.
In order to better reduce the temperature of the compressed air in the compressed air cooler 6, the compressed air cooler 6 is provided with a gas inlet 9 for connecting the gas-gas heat exchanger 5 and a gas outlet 10 connected with the evaporator 1, and the gas inlet 9 is arranged above the gas outlet 10.
In this embodiment, the gas-gas heat exchanger 5 includes an exchanger housing 11, a plurality of cold runners 12 are provided in the gas-gas heat exchanger 5, a return port 13 for communicating the evaporator 1 and the interiors of the cold runners 12 and an air outlet 14 for discharging air in the cold runners 12 are provided on the gas-gas heat exchanger 5, a first air inlet 15 matched with the air inlet 9 in the compressed air cooler 6 is further provided on the gas-gas heat exchanger 5, a cooling pipe 21 which is bent and coiled is provided inside the compressed air cooler 6, the cooling pipe 21 connects the air inlet 9 and the air outlet 10, and a buffer section 22 which is bent upward is provided at an end portion of the cooling pipe 21 close to the air inlet. The buffer section which is convex upwards is arranged to slow down the flow velocity of the compressed air, so that the gas can stay in the cooling pipe 21 for a longer time, and a better cooling effect is achieved.
The gas returning from the evaporator 1 enters the gas-gas heat exchanger 5 again through the cold runner 12, the gas in the cooling pipeline and the gas which just enters the gas-gas heat exchanger 5 are subjected to heat exchange treatment to reduce the temperature, and the gas in the cooling pipeline is discharged from the gas outlet 14.
In this embodiment, in order to improve the heat exchange effect, the plurality of cold runners 12 are vertically disposed inside the exchanger shell 11 along the length direction of the vertical exchanger shell 11, and the cold runners 12 are disposed at the center of the exchanger shell 11, the first air inlet 15 and the air inlet 9 are disposed on the side wall of the gas-gas heat exchanger 5, the air inlet and the air inlet 9 are respectively located at two sides of the cold runners 12, and the air ports at two sides of the split row can allow the introduced air to fully contact with the cold runners 12 when being disposed.
In order to facilitate drainage and gas recovery, a filtering drainage structure 16 is arranged between the gas-gas heat exchanger 5 and the evaporator 1, one end of the filtering drainage structure 16 is used for draining liquid water out of the equipment, and the other end of the filtering drainage structure 16 is communicated with the gas-gas heat exchanger 5 and the evaporator 1 to return gas.
Preferably, the filtering and draining structure 16 comprises a liquid-gas separator 17 and a draining valve 18 connected with the liquid-gas separator 17. When the water vapor in the evaporator 1 passes through the liquid-vapor separator 17, the air is separated from the water vapor, the air flows back to the gas-vapor heat exchanger 5 again through the liquid-vapor separator 17, and the water vapor is liquefied and then discharged from the drain valve 18.
In this embodiment, in order to make the gas and liquid more uniformly mixed, a gas-liquid mixer 19 is provided between the expansion valve 4 and the evaporator 1, one end of the gas-liquid mixer 19 communicates with the expansion valve 4, and the other end of the gas-liquid mixer 19 is connected to the refrigeration compressor 2 and the evaporator 1, respectively.
In the present embodiment, a liquid separator 20 is further provided between the expansion valve 4 and the evaporator 1, and the liquid separator 20 is provided in a branch between the gas-liquid mixer 19 and the evaporator 1.
The utility model discloses a theory of operation does: in the working circuit: the refrigeration compressor 2 sucks the low-pressure (low-temperature) refrigerant in the evaporator 1 into a compressor cylinder, the refrigerant vapor is compressed, the pressure and the temperature are simultaneously raised, the high-pressure and high-temperature refrigerant vapor is pressed to the condenser 3, the refrigerant vapor with higher temperature exchanges heat with cooling water or air with lower temperature in the condenser 3, the heat of the refrigerant is taken away by the water or the air and is condensed, and the refrigerant vapor is changed into liquid. The part of liquid is conveyed to the expansion valve 4, is throttled into low-temperature and low-pressure liquid by the expansion valve 4 and enters the evaporator 1, the low-temperature and low-pressure refrigerant liquid in the evaporator 1 absorbs the heat of the compressed air to be vaporized (commonly called as 'evaporation'), and the compressed air is condensed into a large amount of liquid water after being cooled; the refrigerant vapor in the evaporator 1 is sucked by the compressor, so that the refrigerant undergoes four processes of compression, condensation, throttling and evaporation in the system, thereby completing a cycle.
In the cooling circuit: the gas-gas heat exchanger 5 is connected with an external air compressor, air is fed into the gas-gas heat exchanger 5 through the air compressor, the fed compressed air is contacted with a cold flow pipe to obtain primary cooling gas, then the cooling gas is fed into the compressed air cooler 6 through the gas inlet 9 to be further cooled, and is discharged into the evaporator 1 after being cooled, the cooling gas in the evaporator 1 is recycled and then fed into the filtering and discharging structure 16 to be subjected to gas-liquid separation, the separated gas flows back into the cold flow passage 12, and the separated liquid is discharged from the drain valve 18.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms evaporator 1, refrigeration compressor 2, condenser 3, expansion valve 4, gas-gas heat exchanger 5, compressed air cooler 6, gas-liquid separator 7, precision filter 8, gas inlet 9, gas outlet 10, exchanger housing 11, cold runner 12, return port 13, gas outlet 14, first gas inlet 15, filter drain 16, liquid-gas separator 17, drain valve 18, gas-liquid mixer 19, liquid separator 20, cooling pipe 21, buffer section 22, etc., are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.
Claims (10)
1. The utility model provides an energy-saving freeze dryer, includes evaporimeter (1), compressor (2), condenser (3) and expansion valve (4), evaporimeter (1), compressor (2), condenser (3) and expansion valve (4) connect gradually through the pipeline and form work circuit, its characterized in that, evaporimeter (1) on still be connected with and be used for compressed air to enter into gas heat exchanger (5) in evaporimeter (1), gas heat exchanger (5) and evaporimeter (1) between be connected with and be used for compressed air secondary cooling's compressed air cooler (6), gas heat exchanger (5), compressed air cooler (6) and evaporimeter (1) between form cooling circuit through the pipe connection.
2. The energy-saving freeze dryer according to claim 1, wherein a gas-liquid separator (7) and a precision filter (8) are arranged between the evaporator (1) and the compressed air cooler (6), the gas-liquid separator (7) and the precision filter (8) are connected in series with each other on a pipeline, and the gas-liquid separator (7) is arranged at one side close to the gas-liquid separator (7).
3. The energy-saving freeze dryer according to claim 1, wherein the compressed air cooler (6) is provided with a gas inlet (9) for connecting the gas-gas heat exchanger (5) and a gas outlet (10) connected with the evaporator (1), the gas inlet (9) is arranged above the gas outlet (10), the compressed air cooler (6) is internally provided with a cooling pipe (21) which is bent and coiled, the cooling pipe (21) is connected with the gas inlet (9) and the gas outlet (10), and the end part of the cooling pipe (21) close to the gas inlet (9) is provided with a buffer section (22) which is formed by bending upwards.
4. The energy-saving freeze dryer according to claim 3, wherein the gas-gas heat exchanger (5) comprises an exchanger housing (11), a plurality of cold runners (12) are provided in the gas-gas heat exchanger (5), a return port (13) for communicating the evaporator (1) and the cold runners (12) and an air outlet (14) for discharging the air in the cold runners (12) are provided on the gas-gas heat exchanger (5), and the gas-gas heat exchanger (5) is further provided with a first air inlet (15) which is matched with the air inlet (9) in the compressed air cooler (6).
5. Energy efficient freeze dryer according to claim 4, characterized in that the plurality of cold channels (12) is arranged vertically inside the exchanger shell (11) in the length direction of the vertical exchanger shell (11) and the cold channels (12) are arranged in the center of the exchanger shell (11).
6. Energy-efficient freeze dryer according to claim 4, characterized in that the first gas inlet (15) and the gas inlet (9) are open on the side wall of the gas-gas heat exchanger (5), and the first gas inlet and the gas inlet (9) are located on both sides of the cold runner (12), respectively.
7. The energy-saving freeze dryer according to claim 1, wherein a filtering drainage structure (16) is arranged between the gas-gas heat exchanger (5) and the evaporator (1), one end of the filtering drainage structure (16) is used for draining liquid water out of the device, and the other end of the filtering drainage structure (16) is communicated with the gas-gas heat exchanger (5) and the evaporator (1) to reflux gas.
8. Energy saving freeze dryer according to claim 7, wherein the filter drain arrangement (16) comprises a liquid vapor separator (17) and a drain valve (18) connected to the liquid vapor separator (17).
9. The energy-saving freeze dryer according to claim 1, wherein a gas-liquid mixer (19) is disposed between the expansion valve (4) and the evaporator (1), one end of the gas-liquid mixer (19) is communicated with the expansion valve (4), and the other end of the gas-liquid mixer (19) is connected to the refrigeration compressor (2) and the evaporator (1), respectively.
10. Energy-saving freeze dryer according to claim 9, characterized in that a liquid separator (20) is further arranged between the expansion valve (4) and the evaporator (1), the liquid separator (20) being arranged in a branch between the gas-liquid mixer (19) and the evaporator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022445678.4U CN214159111U (en) | 2020-10-28 | 2020-10-28 | Energy-saving freeze dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022445678.4U CN214159111U (en) | 2020-10-28 | 2020-10-28 | Energy-saving freeze dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214159111U true CN214159111U (en) | 2021-09-10 |
Family
ID=77598501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022445678.4U Active CN214159111U (en) | 2020-10-28 | 2020-10-28 | Energy-saving freeze dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214159111U (en) |
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2020
- 2020-10-28 CN CN202022445678.4U patent/CN214159111U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 502, Building 1, No. 51 Jiusheng Road, Shangcheng District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Zhejiang Jiepu Zhihui Energy Technology Co.,Ltd. Address before: 310016 room 285, floor 2, building 4, No. 9, Jiuhuan Road, Jianggan District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG JIEPU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |