CN215983578U - Vacuum freeze dryer and cold trap device thereof - Google Patents
Vacuum freeze dryer and cold trap device thereof Download PDFInfo
- Publication number
- CN215983578U CN215983578U CN202120617156.XU CN202120617156U CN215983578U CN 215983578 U CN215983578 U CN 215983578U CN 202120617156 U CN202120617156 U CN 202120617156U CN 215983578 U CN215983578 U CN 215983578U
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- Prior art keywords
- cold trap
- pipe
- refrigerant
- inlet
- outlet
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- 239000003507 refrigerant Substances 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 238000010257 thawing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 230000008022 sublimation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model provides a vacuum freeze drier and a cold trap device thereof, wherein the cold trap device comprises: a refrigerant device having a refrigerant inlet and a refrigerant outlet, the refrigerant device storing a refrigerant therein; the inlet end of the cold trap pipe can be communicated with the refrigerant outlet, the outlet end of the cold trap pipe can be communicated with the refrigerant inlet, the number of the cold trap pipes is two, and the two cold trap pipes are mutually standby. Because there are two cold trap pipes, when one cold trap pipe is abnormal, such as freezing, the other cold trap pipe is activated. Therefore, the machine does not need to be stopped to unfreeze the frozen cold trap pipe, thereby ensuring the production efficiency. In addition, when the first cold trap tube freezes, the second cold trap tube is activated. And then the heating agent in the heating agent device enters the first cold trap pipe through the inlet side pipe of the first cold trap pipe so as to accelerate the defrosting of the first cold trap pipe.
Description
Technical Field
The utility model relates to the technical field of vacuum freeze dryers, in particular to a vacuum freeze dryer and a cold trap device thereof.
Background
The vacuum freeze drier is to utilize the sublimation principle in vacuum state to make the water content inside the frozen food sublimated into water vapor directly without melting ice, so as to dry the food. Compared with the technologies of air drying, dehydration and the like, the freeze-dried food has the greatest characteristic of retaining the color, the fragrance, the taste and the shape of the product and the nutrient components of the original ecological food.
The cold trap device in the vacuum freeze dryer is used for condensing water vapor generated by water sublimation in materials. However, in actual operation, the cold trap tubes of the cold trap device are prone to freezing. If freezing of the cold trap tube occurs, it is necessary to shut down the machine and then defrost the cold trap tube. Thus, the production efficiency is lowered.
Therefore, how to ensure the normal operation of the unit when the cold trap pipe freezes, so as to improve the production efficiency, is a key problem to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to ensure the normal operation of the unit when the cold trap pipe freezes, thereby improving the production efficiency. In order to achieve the purpose, the utility model provides the following technical scheme:
a cold trap device comprising:
a refrigerant device having a refrigerant stored therein, the refrigerant device having a refrigerant outlet and a refrigerant inlet;
the inlet end of the cold trap pipe can be communicated with the refrigerant outlet, the outlet end of the cold trap pipe can be communicated with the refrigerant inlet, the number of the cold trap pipes is two, and the two cold trap pipes are mutually standby.
Preferably, the inlet ends of the two cold trap pipes are communicated with the refrigerant outlet through a first three-way valve, and the outlet ends of the two cold trap pipes are communicated with the refrigerant inlet through a second three-way valve.
Preferably, the refrigerant is ammonia or freon.
Preferably, the heating system further comprises a heating agent device, wherein a heating agent is stored in the heating agent device, and the heating agent device is provided with a heating agent outlet and a heating agent inlet;
the cold trap pipe is close to the one end of the entrance point of cold trap pipe still is provided with into end other pipe, advance end other pipe can with the heating agent export intercommunication, the cold trap pipe be close to the one end of the exit end of cold trap pipe still is provided with out end other pipe, out end other pipe with the refrigerant entry intercommunication.
Preferably, the two inlet-side pipes are communicated with the heating medium outlet through a third three-way valve, and the two outlet-side pipes are communicated with the heating medium inlet through a fourth three-way valve.
Preferably, the heating agent is ammonia or freon.
Preferably, the first three-way valve, the second three-way valve, the third three-way valve and the fourth three-way valve are all solenoid valves and are all controlled by a controller.
The utility model also discloses a vacuum freeze dryer, which comprises a cold trap device, wherein the cold trap device is any one of the cold trap devices.
According to the technical scheme, the refrigerant enters the cold trap pipe from the refrigerant outlet, absorbs heat in the cold trap pipe, so that the temperature around the cold trap pipe is reduced, and then the refrigerant flows back into the refrigerant device through the refrigerant inlet. The two cold trap pipes are used for standby. When one of the cold trap pipes is abnormal, such as freezing, the other cold trap pipe is activated. Therefore, the machine does not need to be stopped to unfreeze the frozen cold trap pipe, thereby ensuring the production efficiency. In addition, when the first cold trap tube freezes, the second cold trap tube is activated. And then the heating agent in the heating agent device enters the first cold trap pipe through the inlet side pipe of the first cold trap pipe so as to accelerate the defrosting of the first cold trap pipe.
Drawings
In order to more clearly illustrate the solution of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a cold trap tube according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cold trap tube according to an embodiment of the present invention.
Wherein, 1 is a cold trap pipe, 2 is a first three-way valve, 3 is a second three-way valve, 4 is an inlet side bypass pipe, 5 is a third three-way valve, 6 is a fourth three-way valve, and 7 is an outlet side bypass pipe.
Detailed Description
The utility model discloses a cold trap device, which comprises two cold trap pipes, wherein the two cold trap pipes are mutually standby, so that the phenomenon that one cold trap pipe needs to be stopped when being abnormal is avoided, and the production efficiency is improved. The utility model also discloses a vacuum freeze dryer.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The cold trap device in the present invention includes a refrigerant device and a cold trap tube 1. Wherein the refrigerant device stores a refrigerant therein. The refrigerant device has a refrigerant outlet and a refrigerant inlet. The inlet end of the cold trap pipe 1 can communicate with the refrigerant outlet, and the outlet end of the cold trap pipe 1 can communicate with the refrigerant inlet. That is, the refrigerant enters the cold trap pipe 1 from the refrigerant outlet, absorbs heat in the cold trap pipe 1, and lowers the temperature around the cold trap pipe 1, and then the refrigerant flows back into the refrigerant device through the refrigerant inlet.
In particular, the number of the cold trap pipes 1 in the present invention is two, and the two cold trap pipes 1 are spare to each other. When one of the cold trap pipes 1 is abnormal, such as frozen, the other cold trap pipe 1 is activated. In this way, it is not necessary to stop the machine to thaw the frozen cold trap tube 1, thereby ensuring production efficiency.
Specifically, the inlet ends of the two cold trap pipes 1 communicate with the refrigerant outlet through the first three-way valve 2. The outlet ends of the two cold trap pipes 1 are communicated with the refrigerant inlet through a second three-way valve 3. The inlet end of the first cold trap pipe 1 is communicated with the first outlet of the first three-way valve 2, and the inlet end of the second cold trap pipe 1 is communicated with the second outlet of the first three-way valve 2. The inlet of the first three-way valve 2 communicates with the refrigerant outlet. The outlet end of the first cold trap pipe 1 is communicated with the first inlet of the second three-way valve 3, the outlet end of the second cold trap pipe 1 is communicated with the second inlet of the second three-way valve 3, and the outlet of the second three-way valve 3 is communicated with the refrigerant inlet.
When the first outlet of the first three-way valve 2 is communicated with the inlet and the first inlet of the second three-way valve 3 is communicated with the outlet, the first cold trap pipe 1 is communicated with the refrigerant device. When the second outlet of the first three-way valve 2 is communicated with the inlet and the second inlet of the second three-way valve 3 is communicated with the outlet, the second cold trap pipe 1 is communicated with the refrigerant device. The provision of the first three-way valve 2 and the second three-way valve 3 facilitates the connection of the two cold trap pipes 1 to the refrigerant device.
The refrigerant in the refrigerant device is preferably ammonia or freon. The gasification process of ammonia or freon is a heat absorption process, thereby achieving the effect of refrigeration.
In order to improve the cooling effect of the cold trap pipe 1, the main body of the cold trap pipe 1 may be formed as a coil pipe.
The utility model is also characterized in that a heating agent device is additionally arranged. The heating agent device is internally stored with a heating agent. The heating agent device is provided with a heating agent outlet and a heating agent inlet. An inlet end side pipe 4 is further arranged at one end of the cold trap pipe 1 close to the inlet end of the cold trap pipe 1, and the inlet end side pipe 4 can be communicated with a heating agent outlet. An outlet side pipe 7 is further arranged at one end, close to the outlet end of the cold trap pipe 1, and the outlet side pipe 7 can be communicated with a refrigerant inlet.
When the first cold trap pipe 1 is frozen, the second cold trap pipe 1 is started. Then, the heating agent in the heating agent device enters the first cold trap pipe 1 through the inlet side pipe 4 of the first cold trap pipe 1 to accelerate the defrosting of the first cold trap pipe 1.
The utility model is provided with two cold trap pipes 1, and two ends of each cold trap pipe 1 are provided with an inlet end side pipe 4 and an outlet end side pipe 7, so that the two inlet end side pipes 4 and the two outlet end side pipes 7 are shared. In order to facilitate the connection of the two inlet side pipes 4 and the heating agent outlet, the utility model is additionally provided with a third three-way valve 5. The two inlet end bypass pipes 4 are communicated with a heating agent outlet through a third three-way valve 5. Similarly, in order to facilitate the connection between the two outlet-end bypass pipes 7 and the heating agent inlet, the utility model is additionally provided with the fourth three-way valve 6, and the two outlet-end bypass pipes 7 are communicated with the heating agent inlet through the fourth three-way valve 6.
The inlet side pipe 4 and the outlet side pipe 7 on the first cold trap pipe 1 are respectively defined as a first inlet side pipe and a first outlet side pipe, and the inlet side pipe 4 and the outlet side pipe 7 on the second cold trap pipe 1 are respectively defined as a second inlet side pipe and a second outlet side pipe. Then, the first inlet-side bypass pipe and the second inlet-side bypass pipe are respectively communicated with the first outlet and the second outlet of the third three-way valve 5, and the inlet of the third three-way valve 5 is communicated with the heating-medium outlet. The first outlet side pipe and the second outlet side pipe are respectively communicated with a first inlet and a second inlet of the fourth three-way valve 6, and an outlet of the fourth three-way valve 6 is communicated with the refrigerant inlet.
If the first cold trap pipe 1 is to be defrosted, the inlet of the third three-way valve 5 is brought into communication with the first outlet, while the first inlet of the fourth three-way valve 6 is brought into communication with the outlet. If the second cold trap pipe 1 is to be defrosted, the inlet of the third three-way valve 5 is connected to the second outlet, and the second inlet of the fourth three-way valve 6 is connected to the outlet. The third three-way valve 5 and the fourth three-way valve 6 are arranged to facilitate the communication between the inlet side bypass pipe 4 and the outlet side bypass pipe 7 and the heating agent device.
Specifically, the heating agent is preferably ammonia or freon. The liquefaction process of ammonia or freon is an exothermic process.
The present invention also sets the first three-way valve 2, the second three-way valve 3, the third three-way valve 5, and the fourth three-way valve 6 as solenoid valves, and are all controlled by the controller. The four three-way valves can be controlled by operating the controller.
The utility model also discloses a vacuum freeze dryer, which comprises a cold trap device, particularly, the cold trap device is any one of the cold trap devices, the cold trap device has the effect, and the vacuum freeze dryer with the cold trap device also has the effect, so the details are not repeated.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A cold trap device, comprising:
a refrigerant device having a refrigerant stored therein, the refrigerant device having a refrigerant outlet and a refrigerant inlet;
the inlet end of the cold trap pipe can be communicated with the refrigerant outlet, the outlet end of the cold trap pipe can be communicated with the refrigerant inlet, the number of the cold trap pipes is two, and the two cold trap pipes are mutually standby.
2. A cold trap device according to claim 1, wherein the inlet ends of the two cold trap pipes communicate with the refrigerant outlet through a first three-way valve, and the outlet ends of the two cold trap pipes communicate with the refrigerant inlet through a second three-way valve.
3. A cold trap device according to claim 1, wherein the refrigerant is ammonia or freon.
4. The cold trap device according to claim 2, further comprising a heating agent device having a heating agent stored therein, the heating agent device having a heating agent outlet and a heating agent inlet;
the cold trap pipe is close to the one end of the entrance point of cold trap pipe still is provided with into end other pipe, advance end other pipe can with the heating agent export intercommunication, the cold trap pipe be close to the one end of the exit end of cold trap pipe still is provided with out end other pipe, out end other pipe with the refrigerant entry intercommunication.
5. A cold trap device according to claim 4, wherein two of the inlet bypass pipes communicate with the heating medium outlet through a third three-way valve, and two of the outlet bypass pipes communicate with the heating medium inlet through a fourth three-way valve.
6. A cold trap device according to claim 4, wherein the heating agent is ammonia or Freon.
7. A cold trap device according to claim 5, wherein the first, second, third and fourth three-way valves are all solenoid valves and are all controlled by a controller.
8. A vacuum freeze dryer comprising a cold trap device, wherein the cold trap device is as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120617156.XU CN215983578U (en) | 2021-03-26 | 2021-03-26 | Vacuum freeze dryer and cold trap device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120617156.XU CN215983578U (en) | 2021-03-26 | 2021-03-26 | Vacuum freeze dryer and cold trap device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215983578U true CN215983578U (en) | 2022-03-08 |
Family
ID=80506960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120617156.XU Expired - Fee Related CN215983578U (en) | 2021-03-26 | 2021-03-26 | Vacuum freeze dryer and cold trap device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215983578U (en) |
-
2021
- 2021-03-26 CN CN202120617156.XU patent/CN215983578U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |