CN212299596U

CN212299596U - Ultra-low temperature refrigerator

Info

Publication number: CN212299596U
Application number: CN202020636097.6U
Authority: CN
Inventors: 李允章
Original assignee: Adicon Clinical Laboratories Center Inc
Current assignee: Adicon Clinical Laboratories Center Inc
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-01-05
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to an ultra-low temperature refrigerator, including refrigerator main part and refrigerator door. At least first and second closing gaskets are provided between the refrigerator body and the door, wherein the first closing gasket is surrounded by the second closing gasket. When the refrigerator door is closed, the first and second closing sealing rings perform double sealing on the refrigerator door and the refrigerator main body. The inner wall of the refrigerator door facing the refrigerator main body is provided with a drying agent for absorbing moisture in the air in the refrigerator. The utility model has the advantages of good sealing effect, excellent heat-insulating property, difficult freezing of the refrigerator door, easy opening of the refrigerator door and the like.

Description

Ultra-low temperature refrigerator

Technical Field

The utility model relates to a refrigerator especially relates to an ultra-low temperature refrigerator who is applied to hospital, laboratory etc.

Background

Ultra-low temperature refrigerators are generally used for cryopreservation of biologically active substances such as biological products, chemical reagents, blood plasma, vaccines, strains of bacteria and biological samples, and have become key devices in the fields of hospitals, biological laboratories, biopharmaceuticals, and the like.

Generally, it is desirable to freeze the biological product or bioactive substance in a lower temperature environment for storage; during this time, its metabolic activity is in a suspended state. When necessary, the medicine is taken out for resuscitation. Currently, these biologics or biologically active substances are usually stored in ultra-low temperature refrigerators or freezers.

However, in actual practice, the use of an ultra-low temperature refrigerator may have the following problems:

1. in the process of cooling, low-temperature damage may be caused, water in cells forms ice crystals to further puncture or burst cell membranes, and the cells are seriously damaged, so the speed of the cooling and refrigerating process is as fast as possible, and the cooling process is as short as possible;

2. it is required that the ultra-low temperature refrigerator should be capable of continuously and stably operating and maintaining a relatively stable temperature during the freezing preservation period;

3. the sample to be preserved is sensitive to temperature, and the temperature fluctuation of the ultra-low temperature refrigerator is usually required to be as small as possible, namely the temperature of each part in the ultra-low temperature refrigerator is required to be as uniform as possible;

4. the door opening and closing sample taking and placing has great influence on the temperature change of the ultra-low temperature refrigerator, and the sample taking and placing should be completed as soon as possible, so that the door opening and closing times are reduced, and the door opening and closing time is shortened each time.

The ultra-low temperature refrigerator which is widely applied at present mainly has the following models:

1) the Memmert ULF series ultra-low temperature refrigerator is characterized in that:

the Memmert ULF series super low temperature refrigerator adopts 100% environmental protection refrigerant without HCFC and CFC, the single refrigerant can complete the refrigeration target, the temperature control range is-40 to-86 ℃.

In the layout of the inner space of the Memmert ULF ultra-low temperature refrigerator, each interlayer is provided with an independent inner door, so that when a certain layer of inner door is opened to take and place a sample, other interlayers cannot be affected, heat loss is effectively reduced, the temperature in the refrigerator body cannot rise too fast, temperature fluctuation is effectively reduced, and the operation stability of the ultra-low temperature refrigerator is improved.

2) ULF110/400/600 series ultra-low temperature refrigerator, which is characterized in that:

ULF110/400/600 adopts single compressor (ULF 750 adopts double compressors in parallel) technology, and has the advantages of low energy consumption, high refrigeration efficiency, low noise, no filter screen design and simpler and more convenient maintenance.

The ULF series ultra-low temperature refrigerator has excellent performance, various parameters including cooling rate, heat preservation effect and the like are superior to the standard, and the time required for cooling from room temperature to minus 86 ℃ is shortened to about 200 minutes; after power failure, the temperature rises slowly and can be kept below-55 ℃ for a plurality of hours. Can be used for rapid freezing and storing rare and high value-added biological samples and research materials.

However, in actual practice, the inventors found that some existing ultra-low temperature refrigerators may have a problem in that it is difficult to open the refrigerator door. After careful analysis, the inventor finds that the humidity in the refrigerator is high, the air in the refrigerator contains much moisture, and in an ultralow-temperature environment, the moisture is condensed into ice, so that the refrigerator door is frozen, and the refrigerator door is difficult to open. Meanwhile, the inventor also finds that the drawer type drawer in the refrigerator is difficult to pull out due to being frozen. In order to solve the technical problems, the inventor provides a new technical scheme, and the invention is formed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an ultra-low temperature refrigerator, including refrigerator main part and refrigerator door, wherein, the refrigerator door is articulated its characterized in that by the loose-leaf with the refrigerator main part: at least a first closing sealing ring and a second closing sealing ring are arranged between the refrigerator main body and the refrigerator door, wherein the first closing sealing ring is surrounded by the second closing sealing ring, and when the refrigerator door is closed, the first closing sealing ring and the second closing sealing ring carry out double sealing on the refrigerator door and the refrigerator main body; the refrigerator door is provided with a desiccant on an inner wall thereof facing the refrigerator main body.

As a further improvement of the utility model, the refrigerator door is equipped with the pocket at its inner wall towards the refrigerator main part, and the drier is placed in this pocket, the convenient change.

As a further improvement, the refrigerator door is provided with a basket at its inner wall facing the refrigerator main body, the basket is provided with an opening, and the desiccant is placed in the basket for convenient replacement.

As a further improvement, the refrigerator door is provided with a hook on the inner wall of the refrigerator body, and the drying agent is packaged by the air permeable material and then hung on the hook, so that the refrigerator door can be conveniently replaced.

As a further improvement of the utility model, the refrigerator main body comprises at least two pull-out drawers which are overlapped up and down, and the drawers are sealed with each other.

As a further improvement of the utility model, the drawers are sealed by a sealing gasket which can resist the ultralow temperature of eighty degrees centigrade below zero.

As a further improvement of the utility model, the drawers are sealed by a disposable sealing adhesive tape which is resistant to the ultralow temperature of eighty degrees centigrade below zero.

As a further improvement of the utility model, the ultra-low temperature refrigerator can be cooled to eighty degrees centigrade below zero.

Advantageous effects

The utility model has the advantages that: due to the adoption of the double sealing rings, after the container door is closed, the sealing effect between the refrigerator door and the refrigerator main body is better, so that air and heat exchange between the inside and the outside environment of the refrigerator are better blocked, and the performance of the ultra-low temperature refrigerator is improved. In addition, the drying agent in the refrigerator effectively reduces the moisture in the air in the refrigerator, reduces the probability of freezing in the refrigerator, and reduces the risk of freezing the refrigerator door, thereby reducing the difficulty degree of opening the refrigerator door.

Drawings

Fig. 1 is a schematic diagram of the present invention.

The reference numbers illustrate:

1. a refrigerator main body; 2. a refrigerator door; 3. loose leaves; 4. a first closed sealing ring; 5. a second closed sealing ring; 6. an inner wall; 7. a desiccant; 8. a desiccant bag; 9. a pull-out drawer; 10. a handle; 11. a sealing strip.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

The utility model relates to a novel ultra-low temperature refrigerator. The ultra-low temperature refrigerator comprises a refrigerator main body 1 and a refrigerator door 2, wherein the refrigerator door 2 is hinged to the refrigerator main body 1 through a hinge 3, and the refrigerator door 2 can rotate relative to the refrigerator main body 1 by taking the hinge 3 as a shaft. At least a first closed sealing ring 4 and a second closed sealing ring 5 are arranged between the refrigerator main body 1 and the refrigerator door 2, wherein the first closed sealing ring 4 is surrounded by the second closed sealing ring 5, namely, the first closed sealing ring 4 and the second closed sealing ring 5 are close to each other, the first closed sealing ring 4 is an inner ring, and the second closed sealing ring 5 is an outer ring. When the refrigerator door 2 is closed, the first and second

closing seal rings

4 and 5 perform double sealing on the refrigerator door 2 and the refrigerator main body 1, and block air circulation and heat exchange between the inside and the outside of the ultra-low temperature refrigerator.

In addition to the sealing performance of the ultra-low temperature refrigerator, the inner wall 6 of the refrigerator door 2 facing the refrigerator main body 1 is also provided with a drying agent 7. The drying agent 7 is used for drying the air in the refrigerator after the refrigerator door 2 is closed, and absorbing the moisture in the air in the refrigerator, thereby reducing the probability that the air in the refrigerator is condensed into frost, and effectively solving the technical problem that the refrigerator door 2 is difficult to open because of being frozen by the frost.

In order to improve the drying effect, the drying agent needs to be replaced periodically. In order to replace the drying agent regularly, the drying agent bag 8 is arranged on the inner wall 6 of the refrigerator door 2 facing the refrigerator main body 1, and the drying agent 7 is placed in the drying agent bag 8. The desiccant bag is air permeable, so that the desiccant 7 can absorb moisture in the air in the ultra-low temperature refrigerator conveniently. Therefore, the desiccant 7 can be easily replaced. In one embodiment, the desiccant bag 8 is a mesh bag. In another embodiment, the desiccant pouch 8 is a basket that has openings to facilitate the absorption of moisture from the air in the ultra-low temperature refrigerator by the desiccant. In another embodiment, the refrigerator door 2 is provided with a hook (not shown) on its inner wall 6 facing the refrigerator main body 1, and the desiccant 7 is packaged by a breathable material and then hung on the hook for convenient replacement. The air-permeable material for packing the desiccant 7 includes non-woven fabric, cotton cloth, air-permeable paper, etc. In fig. 1, three desiccant pockets 8 are provided on the inner wall 6 of the refrigerator door 2.

The refrigerator body 1 comprises at least two pull-out drawers 9 which are overlapped up and down, and a handle 10 is arranged outside each drawer 9 to facilitate the pull-out of the drawer 9. The drawers 9 are sealed to one another by sealing strips 11. These sealing strips 11 are made of a material resistant to ultra-low temperatures of-eighty degrees celsius. These sealing strips 11 may be gaskets or disposable sealing tapes. During operation, firstly, the refrigerator door 2 is opened, the sealing gasket or the disposable sealing adhesive tape is removed, then the drawer 9 is pulled open, objects stored in the ultra-low temperature refrigerator are stored or taken, then the drawer is pushed in, and then the drawer 9 is sealed by the sealing strip 11. Finally, the refrigerator door 2 is closed. The utility model discloses ultra-low temperature refrigerator can cool down to eighty degrees centigrade below zero.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides an ultra-low temperature refrigerator, includes refrigerator main part and refrigerator door, and wherein, refrigerator door and refrigerator main part are by loose-leaf hinge, its characterized in that: at least a first closing sealing ring and a second closing sealing ring are arranged between the refrigerator main body and the refrigerator door, wherein the first closing sealing ring is surrounded by the second closing sealing ring, and when the refrigerator door is closed, the first closing sealing ring and the second closing sealing ring carry out double sealing on the refrigerator door and the refrigerator main body; the refrigerator door is provided with a desiccant on an inner wall thereof facing the refrigerator main body.

2. The ultra-low temperature refrigerator of claim 1, wherein: the inner wall of the refrigerator door facing the refrigerator main body is provided with a mesh bag, and the drying agent is placed in the mesh bag and is convenient to replace.

3. The ultra-low temperature refrigerator of claim 1, wherein: the inner wall of the refrigerator door facing the refrigerator main body is provided with a basket frame, the basket frame is provided with an opening, and the drying agent is placed in the basket frame and is convenient to replace.

4. The ultra-low temperature refrigerator of claim 1, wherein: the inner wall of the refrigerator door facing the refrigerator main body is provided with a hook, and the drying agent is packaged by a breathable material and then hung on the hook, so that the refrigerator door is convenient to replace.

5. The ultra-low-temperature refrigerator according to any one of claims 1 to 4, wherein: the refrigerator main body comprises at least two pull-out drawers which are overlapped up and down, and the drawers are sealed with each other.

6. The ultra-low temperature refrigerator of claim 5, wherein: the drawers are sealed by sealing gaskets which can resist the ultra-low temperature of eighty ℃ below zero.

7. The ultra-low temperature refrigerator of claim 5, wherein: the drawers are sealed by disposable sealing adhesive tapes resistant to the ultralow temperature of eighty ℃ below zero.

8. The ultra-low temperature refrigerator of claim 1, wherein: the ultra-low temperature refrigerator can be cooled to minus eighty ℃ below zero.