CN220017808U - Constant temperature frostless freezing preservation case - Google Patents
Constant temperature frostless freezing preservation case Download PDFInfo
- Publication number
- CN220017808U CN220017808U CN202320580813.7U CN202320580813U CN220017808U CN 220017808 U CN220017808 U CN 220017808U CN 202320580813 U CN202320580813 U CN 202320580813U CN 220017808 U CN220017808 U CN 220017808U
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- Prior art keywords
- evaporator
- air
- frostless
- box
- constant temperature
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- 238000004321 preservation Methods 0.000 title abstract description 17
- 238000007710 freezing Methods 0.000 title abstract description 15
- 230000008014 freezing Effects 0.000 title abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 14
- 238000005138 cryopreservation Methods 0.000 claims description 12
- 238000010257 thawing Methods 0.000 abstract description 9
- 238000007664 blowing Methods 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 description 14
- 239000003507 refrigerant Substances 0.000 description 9
- 230000006978 adaptation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229960005486 vaccine Drugs 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Landscapes
- Defrosting Systems (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses a constant-temperature frostless freezing preservation box. The technical scheme of the utility model is as follows: the frostless refrigerating system comprises a compressor, a condenser, a drying filter, a multi-inlet electromagnetic valve, a first capillary tube and a second capillary tube which are respectively connected with two outlets of the multi-inlet electromagnetic valve, wherein the first capillary tube and the second capillary tube are respectively connected with the first evaporator and the second evaporator, the first evaporator and the second evaporator are jointly connected to the liquid storage device, a heater is respectively arranged below the first evaporator and the second evaporator, an air duct plate is arranged between the frostless refrigerating system in the box and the equipment cavity, a first air door and a second air door which can be used for supplying cold air after heat exchange are respectively arranged at the tops of the first evaporator and the second evaporator, and a fan which can be used for blowing the cold air into the box through an air outlet is respectively arranged above the first air door and the second air door. The scheme provided by the utility model can not cause temperature deviation in the freezing preservation box during defrosting.
Description
Technical Field
The utility model relates to the technical field of medical refrigeration equipment, in particular to a constant-temperature frostless freezing preservation box.
Background
In medical research and biological laboratories, there are very high storage temperature requirements for specific samples, vaccines, etc. The medical freezing preservation box and the laboratory freezing preservation box generally adopt an air-cooled frostless refrigeration system. The working principle of the air-cooled frostless refrigeration system in the prior art is that when a compressor is started, refrigerant is pumped from an evaporator end to a condenser end, and the refrigerant is changed into high-temperature and high-pressure gas after being compressed by the compressor; then after passing through the condenser, the refrigerant gives out heat to the surrounding air to be changed into high-temperature high-pressure liquid; after passing through a dry filter, absorbing moisture in the refrigerant, then throttling and reducing pressure through a capillary tube to become low-temperature low-pressure refrigerant liquid, and then enabling the refrigerant liquid to enter an evaporator for vaporization; the refrigerant in the evaporator at low temperature and low pressure absorbs a large amount of external heat to be vaporized into dry saturated steam, so that the purpose of absorbing heat and refrigerating to the outside (inside of the storage box) can be achieved in the evaporator. Finally, the refrigerant is sucked by the compressor, so that the refrigerant is continuously circulated, and the continuous refrigeration effect is achieved.
And after a period of time of operation, the common frostless freezing preservation box can frost the evaporator, so that the heat exchange efficiency and the air flow are affected, and the frosting must be performed. Defrosting modes of the evaporator of the freezing preservation box generally fall into two modes: the external electric heater heats and defrosts, and the refrigerating system commutates to defrost the heat pump. When the freezing preservation box is defrosted, the compressor is stopped, the temperature of the evaporator is increased to defrost, and thus the temperature in the box is increased, and the temperature in the box is deviated.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model mainly aims to provide a frostless cryopreservation box which can not cause temperature deviation in the cryopreservation box during defrosting.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a constant temperature frostless cryopreservation case, includes the box, the equipment intracavity of box is provided with frostless refrigerating system, frostless refrigerating system includes compressor, condenser, dry filter, an inlet and a plurality of solenoid valves, the first capillary and the second capillary of being connected respectively with two exports of an inlet and a plurality of solenoid valves, first capillary and second capillary are connected respectively first evaporimeter and second evaporimeter, first evaporimeter and second evaporimeter are connected to the reservoir jointly, the reservoir passes through the pipeline and is connected to the compressor, the below of first evaporimeter and second evaporimeter is provided with the heater respectively, be provided with the wind channel board between the frostless refrigerating system of box inside and equipment chamber, the upper portion of wind channel board is provided with the air outlet, the lower part of wind channel board is provided with the return air inlet, the top of first evaporimeter and second evaporimeter is provided with first air door and the second air door that can the cold air circulation after the heat supply exchange respectively, the top of first air door and second air door is provided with respectively and can be through the inside the air channel board that can be passed through to the first evaporimeter and the air channel to the inside of the air channel from the first evaporimeter to the second air channel.
Preferably, an upper heat insulation plate is further arranged above the first evaporator and the second evaporator, and the upper heat insulation plate is communicated with the first air door and the second air door.
Preferably, a middle heat insulation plate is arranged between the first evaporator and the second evaporator.
Preferably, the one-in-multiple-out electromagnetic valve is a rotary electromagnetic valve.
Preferably, the fan comprises a first fan and a second fan which are correspondingly arranged on the first air door and the second air door.
Preferably, the first fan and the second fan are arranged in the equipment cavity through a fan bracket.
Preferably, a placing bin for placing the compressor is arranged at the bottom of the box body.
Compared with the prior art, the utility model has the advantages that the directions of the electromagnetic valves are counted, the time of the refrigeration operation of the two evaporators is calculated, and the defrosting of the evaporators is performed according to the refrigeration operation time, but the defrosting is not performed simultaneously. When the evaporator is frosted, the corresponding air door is closed, and the corresponding heater is started. When one evaporator is frosted, the other evaporator is used for normally refrigerating according to the start-stop requirement of the temperature in the box, the corresponding air door is opened, and the fan is opened. The scheme can effectively avoid the phenomenon that the temperature in the box exceeds the required temperature caused by defrosting. The constant temperature frostless freezing preservation box designed by the utility model can realize the excellent performance that the temperature fluctuation degree is less than or equal to 0.5 ℃ under a specific environment by controlling the frequency of the compressor by matching with the variable frequency compressor and the PID algorithm.
Drawings
FIG. 1 is a simplified schematic side cross-sectional view of a constant temperature frostless cryopreservation vessel of the present utility model;
FIG. 2 is a simplified schematic rear view of a constant temperature frostless freezer preservation compartment of the present utility model;
FIG. 3 is a simplified perspective view of a housing and air duct plate of a constant temperature frostless freezer preservation compartment of the present utility model;
fig. 4 is a schematic diagram of a frostless refrigeration system of the present utility model.
In the figure: 1. a case; 2. an equipment chamber; 3. a compressor; 4. a condenser; 5. drying the filter; 6. one-inlet and one-outlet electromagnetic valve; 7. a first capillary; 8. a second capillary; 9. a first evaporator; 10. a second evaporator; 11. a reservoir; 12. a heater; 13. an air duct plate; 14. an air outlet; 15. an air return port; 16. a first damper; 17. a second damper; 18. a first fan; 19. a second fan; 20. a front thermal insulation plate; 21. an upper heat-insulating plate; 22. a middle thermal insulation plate; 23. placing a bin; 24. a box door.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, a constant temperature frostless cryopreservation box comprises a box body 1, a frostless refrigeration system is arranged in a device cavity 2 of the box body 1, the frostless refrigeration system comprises a compressor 3, a condenser 4, a drying filter 5, an inlet and outlet electromagnetic valve 6, a first capillary tube 7 and a second capillary tube 8 which are respectively connected with two outlets of the inlet and outlet electromagnetic valve 6, the first capillary tube 7 and the second capillary tube 8 are respectively connected with a first evaporator 9 and a second evaporator 10, the first evaporator 9 and the second evaporator 10 are jointly connected to a liquid storage 11, the liquid storage 11 is connected to the compressor 3 through a pipeline, a heater 12 is respectively arranged below the first evaporator 9 and the second evaporator 10, an air duct plate 13 is arranged between the inside of the box body 1 and the frostless refrigeration system of the device cavity 2, an air outlet 14 is arranged at the upper part of the air duct plate 13, an air return 15 is arranged at the lower part of the air duct plate 13, the first evaporator 9 and the second evaporator 10 are respectively connected with the first evaporator 9 and the second evaporator 10, the air can be respectively arranged at the top of the first evaporator 9 and the second evaporator 10, the air can flow through the air inlet and the second evaporator 17 and the air duct plate 16 and the second evaporator 17 and the air inlet and the second evaporator 17 can be respectively arranged at the air inlet and the air duct plate 16 from the air inlet and the second evaporator 1 to the air inlet and the second evaporator 10.
Preferably, an upper insulation board 21 is further arranged above the first evaporator 9 and the second evaporator 10, and the upper insulation board 21 is communicated with the first air door 16 and the second air door 17.
Preferably, a middle heat insulation plate 22 is arranged between the first evaporator 9 and the second evaporator 10.
Preferably, the one-in-multiple-out solenoid valve 6 is a rotary solenoid valve.
Preferably, the fans include a first fan 18 and a second fan 19 disposed on the first damper 16 and the second damper 17, respectively.
Preferably, the first fan 18 and the second fan 19 are disposed in the equipment cavity 2 through fan brackets.
Preferably, a placing bin 23 for placing the compressor 3 is arranged at the bottom of the box body 1.
The constant temperature frostless freezing preservation box of this scheme, the scheme is for adopting one to advance more to go out solenoid valve 6 to two refrigeration circuit are designed on the basis of first evaporimeter 9 and second evaporimeter 10, and one advances more to go out solenoid valve 6 can switch on arbitrary one refrigeration circuit alone or switch on two refrigeration circuits simultaneously, and one advances more to go out solenoid valve 6 can adopt rotatory solenoid valve. Specifically, there are three types of refrigeration systems: the first capillary tube 7 and the second capillary tube 8 are simultaneously connected with the one-inlet-multi-outlet electromagnetic valve 6, and the first evaporator 9 and the second evaporator 10 simultaneously refrigerate; secondly, a first inlet and a second outlet electromagnetic valve 6 is communicated with a first capillary tube 7, and a first evaporator 9 refrigerates; and thirdly, the first inlet and outlet solenoid valve 6 is connected with the second capillary tube 8, and the second evaporator 10 refrigerates.
In terms of hardware structural design, two evaporators are designed in the constant-temperature frostless freezing preservation box, a front heat insulation plate 20 is designed in front of the two evaporators and the inside of the box body 1, a middle heat insulation plate 22 is designed between the two evaporators, two air doors are correspondingly designed above the two evaporators, a fan is designed above each air door, an air duct plate 13 is designed in front of the front heat insulation plate 20, the two air doors and the two fans, an air outlet 14 is designed at the upper part of the air duct plate 13, an air return 15 is designed at the lower part of the air duct plate, and an air duct is formed by the above components.
The box body 1 is provided with a box door 24
When the constant temperature frostless freezing preservation box designed by the utility model is operated, one evaporator can be controlled to refrigerate or two evaporators can be controlled to refrigerate according to the cooling capacity requirement in the box, and when the evaporators refrigerate, the corresponding air door is opened, and the fan is operated. When the cold energy demand in the box body 1 is large, the two evaporators refrigerate simultaneously, and when the cold energy demand in the box is small, the two evaporators refrigerate in turn.
When in operation, the control thought is as follows: and counting the direction of the electromagnetic valve, calculating the refrigerating operation time of the two evaporators respectively, and defrosting the evaporators according to the refrigerating operation time, wherein the defrosting of the evaporators is not performed simultaneously. When the evaporator is frosted, the corresponding damper is closed and the corresponding heater 12 is activated. When one evaporator is frosted, the other evaporator is used for normally refrigerating according to the start-stop requirement of the temperature in the box, the corresponding air door is opened, and the fan is opened. The scheme can effectively avoid the phenomenon that the temperature in the box exceeds the required temperature caused by defrosting. The constant temperature frostless freezing preservation box designed by the utility model can realize the excellent performance that the temperature fluctuation degree is less than or equal to 0.5 ℃ under a specific environment by controlling the frequency of the compressor 3 by matching with the variable frequency compressor 3 and the PID algorithm.
The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (7)
1. The utility model provides a constant temperature frostless cryopreservation case, includes the box, the equipment intracavity of box is provided with frostless refrigerating system, its characterized in that: the frostless refrigerating system comprises a compressor, a condenser, a drying filter, an inlet and multiple outlet electromagnetic valve, a first capillary and a second capillary which are respectively connected with two outlets of the inlet and multiple outlet electromagnetic valve, wherein the first capillary and the second capillary are respectively connected with a first evaporator and a second evaporator, the first evaporator and the second evaporator are jointly connected to a liquid storage device, the liquid storage device is connected to the compressor through a pipeline, a heater is respectively arranged below the first evaporator and the second evaporator, an air duct plate is arranged between the inside of a box and the frostless refrigerating system of an equipment cavity, an air outlet is formed in the upper portion of the air duct plate, an air return port is formed in the lower portion of the air duct plate, a first air door and a second air door which can enable cold air after heat exchange to flow through the air outlet are respectively arranged at the tops of the first evaporator and the second evaporator, a fan which can enable cold air to flow through the air outlet to the inside of the box is respectively arranged above the first air door and the second evaporator, an air return duct plate is arranged between the first evaporator and the second evaporator, and the air duct plate is arranged in the air return direction from the front of the air duct plate to the air duct.
2. A constant temperature frostless cryopreservation box according to claim 1, wherein: an upper heat insulation plate is further arranged above the first evaporator and the second evaporator, and the upper heat insulation plate is communicated with the first air door and the second air door.
3. A constant temperature frostless cryopreservation box according to claim 1, wherein: and a middle heat insulation plate is arranged between the first evaporator and the second evaporator.
4. A constant temperature frostless cryopreservation box according to claim 1, wherein: the one-in and one-out electromagnetic valve is a rotary electromagnetic valve.
5. A constant temperature frostless cryopreservation box according to claim 1, wherein: the fans comprise a first fan and a second fan which are correspondingly arranged on the first air door and the second air door.
6. A constant temperature frostless cryopreservation box according to claim 5, wherein: the first fan and the second fan are arranged in the equipment cavity through a fan bracket.
7. A constant temperature frostless cryopreservation box according to claim 1, wherein: the bottom of the box body is provided with a placing bin for placing the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320580813.7U CN220017808U (en) | 2023-03-23 | 2023-03-23 | Constant temperature frostless freezing preservation case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320580813.7U CN220017808U (en) | 2023-03-23 | 2023-03-23 | Constant temperature frostless freezing preservation case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220017808U true CN220017808U (en) | 2023-11-14 |
Family
ID=88684211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320580813.7U Active CN220017808U (en) | 2023-03-23 | 2023-03-23 | Constant temperature frostless freezing preservation case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220017808U (en) |
-
2023
- 2023-03-23 CN CN202320580813.7U patent/CN220017808U/en active Active
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