CN211233640U - Freeze dryer refrigerating plant with defrosting function - Google Patents
Freeze dryer refrigerating plant with defrosting function Download PDFInfo
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- CN211233640U CN211233640U CN201922304383.2U CN201922304383U CN211233640U CN 211233640 U CN211233640 U CN 211233640U CN 201922304383 U CN201922304383 U CN 201922304383U CN 211233640 U CN211233640 U CN 211233640U
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Abstract
The utility model discloses a freeze dryer refrigerating plant with defrosting function belongs to freeze dryer refrigerating plant technical field. The refrigerating device comprises a compressor, the compressor is connected with a condenser through a third connecting pipe, the condenser is connected with an evaporative condenser through a fifth connecting pipe, the evaporative condenser is communicated with a partition plate through a sixth connecting pipe and a first branch pipe, the partition plate is communicated with the evaporative condenser through a eighth connecting pipe, the evaporative condenser is communicated with the compressor through a ninth connecting pipe, and the ninth connecting pipe is communicated with the eighth connecting pipe through the evaporative condenser. And the connecting pipe six is communicated with the cold trap through the branch pipe two. The compressor is communicated with the second branch pipe through a fourth connecting pipe, and a third electromagnetic valve is arranged on the fourth connecting pipe. The utility model adopts the above structure freeze dryer refrigerating plant with defrosting function can solve the problem that the structure is complicated, waste electric energy that current freeze dryer cold-trap adopted the electric heating mode defrosting to cause, has the effectual advantage of defrosting.
Description
Technical Field
The utility model belongs to the technical field of the freeze dryer refrigerating plant technique and specifically relates to a freeze dryer refrigerating plant with defrosting function is related to.
Background
A freeze dryer is a method of freezing a water-containing substance into a solid state and then sublimating water from the solid state into a gaseous state to remove water and preserve the substance. The freeze dryer is dried at low temperature, does not deform protein, but can lose biological activity of microorganisms and the like, and is particularly suitable for bioactive products, biochemical products, genetic engineering products, blood products and the like with poor thermal stability.
A plurality of clapboards are placed in a freeze-drying bin of the freeze dryer, materials are placed on the clapboards, and a refrigerant enters the clapboards to exchange heat with the freeze-drying bin and refrigerate. The freeze dryer is also provided with a cold trap, and the cold trap absorbs water vapor in the freeze drying bin by physical adsorption through refrigeration. After the freeze dryer finishes working, the cold trap needs to be defrosted, and frost condensed in the cold trap is removed completely. The defrosting mode of cold trap adopts the paradigm of electrical heating to go on more, not only leads to the structure of cold trap to become complicated, extravagant electric energy moreover, and the defrosting effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a freeze dryer refrigerating plant with defrosting function solves the problem that the structure is complicated, waste the electric energy that current freeze dryer cold-trap adopted the electric heating mode defrosting to cause.
In order to achieve the purpose, the utility model provides a freeze dryer refrigerating device with defrosting function, which comprises a compressor, wherein the compressor is connected with a condenser through a third connecting pipe, the condenser is connected with an evaporative condenser through a fifth connecting pipe, the evaporative condenser is communicated with a partition plate through a sixth connecting pipe and a first branch pipe, the fifth connecting pipe is communicated with the sixth connecting pipe through the evaporative condenser, the partition plate is communicated with the evaporative condenser through a eighth connecting pipe, the evaporative condenser is communicated with the compressor through a ninth connecting pipe, and the ninth connecting pipe is communicated with the eighth connecting pipe through the evaporative condenser; the condenser exchanges heat with the refrigerant entering the evaporative condenser through the connecting pipe five and the refrigerant entering the evaporative condenser through the connecting pipe eight in the evaporative condenser;
the connecting pipe six is communicated with the cold trap through the branch pipe two;
the compressor is communicated with the second branch pipe through a fourth connecting pipe, and a third electromagnetic valve is arranged on the fourth connecting pipe.
Preferably, the first branch pipe is provided with a first electromagnetic valve and a first capillary, the second branch pipe is provided with a second electromagnetic valve and a second capillary, and one end of the fourth connecting pipe is located on the second branch pipe between the second capillary and the cold trap.
Preferably, oil content is arranged between the compressor and the condenser, the compressor is connected with the oil content through a first connecting pipe, the oil content is connected with the condenser through a second connecting pipe and a third connecting pipe, the oil content is communicated with a fourth connecting pipe through the second connecting pipe, an oil return pipe is arranged between the oil content and the compressor, and engine oil separated from the oil content returns into the compressor through the oil return pipe.
The utility model adopts the above structure freeze dryer refrigerating plant with defrosting function can solve the problem that the structure is complicated, waste electric energy that current freeze dryer cold-trap adopted the electric heating mode defrosting to cause, has the effectual advantage of defrosting.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a refrigeration device of a freeze dryer with a defrosting function according to the present invention.
Reference numerals
1. A first connecting pipe; 2. a second connecting pipe; 3. an oil return pipe; 4. a third connecting pipe; 5. a fourth connecting pipe; 6. connecting a pipe V; 7. a sixth connecting pipe; 8. a first branch pipe; 9. a second branch pipe; 10. a seventh connecting pipe; 11. a eighth connecting pipe; 12. and a ninth connecting pipe.
Detailed Description
Examples
Fig. 1 is a schematic structural diagram of an embodiment of a refrigeration device of a freeze dryer with a defrosting function according to the present invention. As shown in the figures, a freeze dryer refrigerating device with defrosting function comprises a compressor, wherein the compressor compresses gaseous refrigerant to form high-temperature and high-pressure gaseous refrigerant. The compressor is connected with the condenser through a third connecting pipe 4, and high-temperature and high-pressure gas from the compressor exchanges heat with air in the condenser to obtain high-pressure and medium-temperature liquid refrigerant. Be provided with the oil content between compressor and the condenser, the compressor passes through connecting pipe one 1 and is connected with the oil content, and the oil content passes through connecting pipe two 2 and connecting pipe three 4 and is connected with the condenser. An oil return pipe 3 is arranged between the oil content and the compressor, and the engine oil separated from the oil content returns to the compressor through the oil return pipe 3. An oil separator, which is an oil separator, has a conventional structure. The oil-gas separator collects the liquid gasoline mixed in the gas refrigerant and then sends the liquid gasoline into the compressor for recycling, so that the oil consumption of the compressor is reduced.
The condenser is connected with the evaporative condenser through a connecting pipe five 6, the evaporative condenser is communicated with the partition plate through a connecting pipe six 7 and a branch pipe one 8, and the connecting pipe five 6 is communicated with the connecting pipe six 7 through the evaporative condenser. And the high-pressure medium-temperature liquid refrigerant coming out of the condenser enters the evaporative condenser for heat exchange, and the refrigerant is further cooled to obtain the low-temperature high-pressure liquid refrigerant. The refrigerant entering the evaporative condenser from the condenser enters the partition plate through the connecting pipe six 7 and the branch pipe one 8, and exchanges heat with the partition plate to cool the partition plate, so that the temperature of the freeze-drying bin is reduced. The first branch pipe 8 is provided with a first electromagnetic valve and a first capillary tube, the first capillary tube has a throttling effect, a low-temperature high-pressure liquid refrigerant is changed into a lower-temperature low-pressure liquid refrigerant in the throttling process, the low-temperature low-pressure liquid refrigerant enters the partition plate to exchange heat with air in the freeze-drying bin, and the freeze-drying bin is cooled.
The clapboard is communicated with the evaporative condenser through a connecting pipe eight 11, and the evaporative condenser is communicated with the compressor through a connecting pipe nine 12 to form a circulation loop. The connecting pipe nine 12 is communicated with the connecting pipe eight 11 through an evaporative condenser. The temperature of the refrigerant is still below 0 ℃ after the heat exchange with the air in the freeze-drying bin is carried out in the partition plate, the refrigerant has more cold energy, the temperature of the refrigerant after being cooled by the condenser is still about 40 ℃, the gaseous refrigerant after the heat exchange in the partition plate and the refrigerant entering the evaporative condenser from the condenser are subjected to the heat exchange in the evaporative condenser, the temperature of the refrigerant flowing into the cold trap or the partition plate is favorably further reduced, and the refrigeration effect is improved.
The connecting pipe six 7 is communicated with the cold trap through the branch pipe two 9, and refrigerant in the evaporative condenser flows into the cold trap through the connecting pipe six 7 and the branch pipe two 9 to refrigerate the cold trap. And a second electromagnetic valve and a second capillary are arranged on the second branch pipe 9. And the second capillary tube has the functions of throttling and cooling. The cold trap is communicated with the connecting pipe eight 11 through the connecting pipe seven 10, and the refrigerant after heat exchange of the cold trap is completed enters the evaporative condenser through the connecting pipe seven 10 and the connecting pipe eight 11.
The oil content is communicated with a connecting pipe IV 5 through a connecting pipe II 2, and one end, far away from the connecting pipe II 2, of the connecting pipe IV 5 is located on a branch pipe II 9 between the capillary pipe II and the cold trap. The compressor is communicated with the second branch pipe 9 through a first connecting pipe 1, a second connecting pipe 2 and a fourth connecting pipe 5, and a third electromagnetic valve is arranged on the fourth connecting pipe 5. When the cold trap needs to be defrosted after freeze-drying is finished, the third electromagnetic valve is opened, the first electromagnetic valve and the second electromagnetic valve are closed, and a high-temperature high-pressure gas refrigerant generated by the compressor directly enters the cold trap through the first connecting pipe 1, the second connecting pipe 2, the fourth connecting pipe 5 and the second branch pipe 9 to heat the cold trap, so that the defrosting purpose is achieved. The refrigeration and the defrosting of the cold trap can be completed by adopting the same pipeline, and an independent electric heating device is not required to be arranged in the cold trap, so that the structure of the cold trap is simplified. And the high-temperature and high-pressure refrigerant flows in the frosted refrigerating pipe, so that the defrosting effect of the refrigerating pipe in the cold trap is improved, and the extra electric energy waste is also avoided.
Compressor, condenser, evaporative condenser, solenoid valve, capillary are current structure in this embodiment.
Therefore, the utility model adopts the above structure freeze dryer refrigerating plant with defrosting function can solve the problem that the structure is complicated, waste electric energy that current freeze dryer cold-trap adopted the electric heating mode defrosting to cause, has the effectual advantage of defrosting.
The above are specific embodiments of the present invention, but the scope of protection of the present invention should not be limited thereto. Any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention are covered by the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the claims.
Claims (3)
1. The utility model provides a freeze dryer refrigerating plant with defrosting function which characterized in that: the compressor is connected with a condenser through a third connecting pipe, the condenser is connected with an evaporative condenser through a fifth connecting pipe, the evaporative condenser is communicated with a partition plate through a sixth connecting pipe and a first branch pipe, the fifth connecting pipe is communicated with the sixth connecting pipe through the evaporative condenser, the partition plate is communicated with the evaporative condenser through an eighth connecting pipe, the evaporative condenser is communicated with the compressor through a ninth connecting pipe, and the ninth connecting pipe is communicated with the eighth connecting pipe through the evaporative condenser; the condenser exchanges heat with the refrigerant entering the evaporative condenser through the connecting pipe five and the refrigerant entering the evaporative condenser through the connecting pipe eight in the evaporative condenser;
the connecting pipe six is communicated with the cold trap through the branch pipe two, and the cold trap is communicated with the connecting pipe eight through the connecting pipe seven;
the compressor is communicated with the second branch pipe through a fourth connecting pipe, and a third electromagnetic valve is arranged on the fourth connecting pipe.
2. The freeze dryer refrigeration device with defrosting function as claimed in claim 1, wherein: the first branch pipe is provided with a first electromagnetic valve and a first capillary, the second branch pipe is provided with a second electromagnetic valve and a second capillary, and one end of the fourth connecting pipe is located on the second branch pipe between the second capillary and the cold trap.
3. The freeze dryer refrigeration device with defrosting function as claimed in claim 1, wherein: be provided with the oil content between compressor and the condenser, the compressor passes through connecting pipe one and is connected with the oil content, and the oil content passes through connecting pipe two and connecting pipe three to be connected with the condenser, and the oil content passes through connecting pipe two and four intercommunications of connecting pipe, is provided with back oil pipe between oil content and the compressor, and the machine oil that the oil content was separated returns in the compressor through returning oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922304383.2U CN211233640U (en) | 2019-12-20 | 2019-12-20 | Freeze dryer refrigerating plant with defrosting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922304383.2U CN211233640U (en) | 2019-12-20 | 2019-12-20 | Freeze dryer refrigerating plant with defrosting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211233640U true CN211233640U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922304383.2U Active CN211233640U (en) | 2019-12-20 | 2019-12-20 | Freeze dryer refrigerating plant with defrosting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211233640U (en) |
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2019
- 2019-12-20 CN CN201922304383.2U patent/CN211233640U/en active Active
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