CN112460888B

CN112460888B - Ultra-low temperature refrigerator

Info

Publication number: CN112460888B
Application number: CN202011193923.5A
Authority: CN
Inventors: 芦慧敏
Original assignee: First Affiliated Hospital of Army Medical University
Current assignee: First Affiliated Hospital of Army Medical University
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2022-04-26
Anticipated expiration: 2040-10-30
Also published as: CN112460888A

Abstract

The invention discloses an ultra-low temperature refrigerator, comprising: refrigerator box, chamber door, sealing member, intake pipe, hot air set and refrigerating system, the chamber door with the refrigerator box is articulated to be connected, the chamber door is close to refrigerator box one side is provided with the mounting groove, the sealing member is in including thermal-insulated gasbag and setting the installation department on the thermal-insulated gasbag, the installation department sets up in the mounting groove, hot air set sets up in the chamber door and pass through the intake pipe intercommunication thermal-insulated gasbag, refrigerating system sets up refrigerator box one end. The invention leads hot air into the heat insulation air bag, softens the sealing element through the hot air to enable the sealing element to deform and recover, and keeps the refrigerator body and the refrigerator door sealed to prevent cold leakage.

Description

Ultra-low temperature refrigerator

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to an ultralow temperature refrigerator.

Background

With the rapid development of biological and medical industries, the requirement of the ultra-low temperature refrigerator for long-term storage of biological materials such as related biological and medical samples and reagents is increasing. Such ultra-low temperature refrigerators generally require a storage temperature below-70 ℃ and a stable refrigeration system to realize long-term reliable storage of biological materials. The door seal structure of the ultra-low temperature refrigerator is similar to that of a household refrigerator, and is sealed by adopting a sealing strip. But the sealing strip can take place deformation after using for a certain time, has great clearance between sealing strip and the refrigerator box after the refrigerator door is closed, causes the problem such as leaking cold, local icing. Continuous cold leakage not only causes the energy consumption of the ultra-low temperature refrigerator to rise, but also causes the icing inside the refrigerator, and the refrigerator is power-off to clear the icing, so that the long-term reliable storage of biological materials is not facilitated.

Disclosure of Invention

The invention aims to provide an ultra-low temperature refrigerator to solve the problem of poor sealing of a door seal structure of the existing refrigerator.

In order to achieve the above object, the present invention provides an ultra-low temperature refrigerator including: refrigerator box, chamber door, sealing member, intake pipe, hot air set and refrigerating system, the chamber door with the refrigerator box is articulated to be connected, the chamber door is close to refrigerator box one side is provided with the mounting groove, the sealing member is in including thermal-insulated gasbag and setting the installation department on the thermal-insulated gasbag, the installation department sets up in the mounting groove, hot air set sets up in the chamber door and pass through the intake pipe intercommunication thermal-insulated gasbag, refrigerating system sets up refrigerator box one end.

Optionally, thermal-insulated gasbag is enclosed in proper order by left side section, back end, right side section and anterior segment and forms, the section of mounting groove is omega shape, the installation department with the back end is connected, the installation department is ship anchor shape and sets up in the mounting groove, be provided with the inlet port intercommunication on the back end thermal-insulated gasbag, the intake pipe passes the installation department intercommunication the inlet port.

Optionally, a mounting frame is arranged on the front section, a magnetic stripe is arranged in the mounting frame, a middle beam is arranged on one side, close to the refrigerator door, of the refrigerator body, and the middle beam can be attracted with the magnetic stripe.

Optionally, a front anchor is arranged on the right section, a front anchor groove for accommodating the front anchor is arranged in the box door, and an anchor claw of the front anchor penetrates through the inner wall of the box door and is arranged in the front anchor groove.

Optionally, a rear anchor is arranged on the left section, a rear anchor groove for accommodating the rear anchor is formed in the box door, and an anchor claw of the rear anchor penetrates through the inner wall of the box door and is arranged in the rear anchor groove.

Optionally, a louver is arranged on the upper end face of the box door, the louver is connected with the hot air device, and a vent hole is formed in the right section.

Optionally, the refrigeration system comprises: the refrigerator comprises a refrigerator body, a cold guide plate, a pulsating heat pipe and a heat insulation layer, wherein the heat insulation layer is arranged at the lower end of the refrigerator body, the cold guide plate is arranged in the refrigerator body, the pulsating heat pipe is connected with the cold guide plate, the refrigerator comprises a hot end and a cold end which are opposite, and the cold end of the refrigerator is connected with the cold guide plate.

Optionally, the ultra-low-temperature refrigerator further includes: the refrigerator comprises a heat radiating fan, heat radiating fins and a ventilation opening, wherein the heat radiating fins are arranged at the hot end of the refrigerator, the ventilation opening is formed in the outer wall of the refrigerator, and the heat radiating fan is arranged between the ventilation opening and the heat radiating fins.

The ultra-low temperature refrigerator provided by the invention comprises: refrigerator box, chamber door, sealing member, intake pipe, hot air set and refrigerating system, the chamber door with the refrigerator box is articulated to be connected, the chamber door is close to refrigerator box one side is provided with the mounting groove, the sealing member is in including thermal-insulated gasbag and setting the installation department on the thermal-insulated gasbag, the installation department sets up in the mounting groove, hot air set sets up in the chamber door and pass through the intake pipe intercommunication thermal-insulated gasbag, refrigerating system sets up refrigerator box one end. The invention leads hot air into the heat insulation air bag, softens the sealing element through the hot air to enable the sealing element to deform and recover, and keeps the refrigerator body and the refrigerator door sealed to prevent cold leakage.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

Fig. 1 is a front view of an ultra-low temperature refrigerator provided in accordance with an embodiment of the present invention;

fig. 2 is a rear view of an ultra-low-temperature refrigerator provided in accordance with an embodiment of the present invention;

fig. 3 is a view of a structure of an ultra-low temperature refrigerator door seal according to an embodiment of the present invention;

FIG. 4 is a view illustrating the installation of front anchors of the ultra-low temperature refrigerator according to an embodiment of the present invention;

fig. 5 is a schematic view of a sealing member of an ultra-low temperature refrigerator according to an embodiment of the present invention.

Wherein: 1-refrigerator body, 2-middle beam, 3-refrigerator door, 4-sealing element, 5-front section, 6-right section, 7-left section, 8-rear section, 9-mounting section, 10-mounting frame, 11-magnetic strip, 12-air inlet hole, 13-front wing, 14-rear wing, 15-front anchor, 16-rear anchor, 17-front anchor groove, 18-rear anchor groove, 19-mounting groove, 20-air inlet pipe, 21-hot air device, 22-air vent, 23-air window, 24-air vent, 25-pulsating heat pipe, 26-cold guide plate, 27-radiating fan, 28-refrigerator, 29-heat insulation layer and 30-radiating fin.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Fig. 1 is a front view of an ultra-low-temperature refrigerator according to an embodiment of the present invention, fig. 2 is a rear view of the ultra-low-temperature refrigerator according to an embodiment of the present invention, fig. 3 is a structural view of an ultra-low-temperature refrigerator door seal according to an embodiment of the present invention, fig. 4 is a front anchor mounting view of the ultra-low-temperature refrigerator according to an embodiment of the present invention, fig. 5 is a schematic view of a ultra-low-temperature refrigerator seal according to an embodiment of the present invention, and referring to fig. 1 to 5, the ultra-low-temperature refrigerator includes: the refrigerator comprises a refrigerator body 1, a refrigerator door 3, a sealing piece 4, an air inlet pipe 20, a hot air device 21 and a refrigerating system. The front end of the refrigerator body 1 is provided with a freezing chamber, and the freezing chamber is used for storing biological materials. The right side of the refrigerator door 3 is connected with the refrigerator body 1 through a hinge, and one side of the refrigerator door 3, which is close to the refrigerator body 1, is provided with a circle of mounting groove 19. Sealing member 4 is in including thermal-insulated gasbag and setting installation department 9 on the thermal-insulated gasbag, installation department 9 sets up in mounting groove 19, hot-blast apparatus 21 sets up in chamber door 1 and through intake pipe 20 intercommunication thermal-insulated gasbag, refrigerating system sets up refrigerator box lower extreme. The sealing element 4 of the refrigerator can be distorted and deformed after being used for a certain time, and a large gap exists between the sealing element 4 and the refrigerator body 1 after the refrigerator door 3 is closed, so that the problems of cold leakage, local icing and the like are caused. According to the invention, hot air is introduced into the heat insulation air bag, so that the sealing element 4 is softened and deformed to recover, the gap between the sealing element 4 and the refrigerator body 1 is reduced, and the refrigerator is prevented from cold leakage.

Referring to fig. 1 to 5, the refrigeration system includes: a refrigerator 28, a cold guide plate 26, a pulsating heat pipe 25 and an insulating layer 29. The lower chamber for placing the refrigerator 28 is arranged below the refrigerator body 1, and the freezing chamber and the lower chamber of the refrigerator body 1 are separated by the heat-insulating layer 29, so that the loss of cold energy is reduced. The pulsating heat pipe 25 is a U-shaped structure formed by bending a capillary copper pipe, the pulsating heat pipe 25 is connected with the cold guide plate 26, and the pulsating heat pipe 25 and the cold guide plate 26 are both arranged in the freezing chamber. The refrigerator 28 is a free piston stirling refrigerator, the refrigerator 28 having opposite hot and cold ends, the cold end of the refrigerator 28 being connected to the cold conductive plate 26. The cold end of the free piston Stirling refrigerator 28 exchanges heat with the cold guide plate 26, so that the working medium in the pulsating heat pipe 25 communicated with the cold guide plate 26 forms oscillatory flow, the cold energy is carried to the hot end from the cold end, the pulsating heat pipe 25 penetrates through all the freezing chambers, and the articles in the freezing chambers of the low-temperature refrigerator are cooled to the low temperature. . The free piston Stirling refrigerating machine has refrigerating efficiency 2 times that of a traditional cascade type vapor compression refrigerating system, and has obvious energy-saving advantage. Meanwhile, the working medium of the free piston Stirling refrigerator is helium, so that the free piston Stirling refrigerator is pollution-free and environment-friendly.

Referring to fig. 1 to 5, the ultra-low-temperature refrigerator further includes: the refrigerator comprises a cooling fan 27, cooling fins 30 and a ventilation opening 24, wherein the cooling fins 30 are arranged at the hot end of the refrigerator 28, the ventilation opening 24 is formed in the outer wall of the refrigerator, the cooling fan 27 is arranged between the ventilation opening 24 and the cooling fins 30, and heat in a lower cavity is discharged through the cooling fan 27.

Referring to fig. 1 to 5, the heat insulation airbag is formed by sequentially surrounding a left section 6, a rear section 7, a right section 8 and a front section 5, the section of the installation groove 19 is omega-shaped, the installation part 9 is connected with the rear section 7, and the installation part 19 is ship-anchor-shaped and is arranged in the installation groove 19. An air inlet hole 12 is formed in the rear section 7 and communicated with the heat insulation air bag, and the air inlet pipe 20 penetrates through the mounting portion 9 and is communicated with the air inlet hole 12. The refrigerator is characterized in that a mounting frame 10 is arranged on the front section 5, a magnetic stripe 11 is arranged in the mounting frame 10, a middle beam 2 is arranged on one side, close to the refrigerator door 3, of the refrigerator body 1, and the middle beam 2 can be attracted with the magnetic stripe 11.

Referring to fig. 1 to 5, the right section is the inner side of the heat-insulating air bag close to the freezing chamber, and the left section is the outer side of the heat-insulating air bag far from the freezing chamber. The right section 8 is provided with a front anchor 15. A front anchor groove 17 for accommodating the front anchor 15 is formed in the box door 3, and an anchor claw of the front anchor 15 penetrates through the inner wall of the box door 3 and is arranged in the front anchor groove 17. A rear anchor 16 is arranged on the left section 6 close to the rear section 7, a rear anchor groove 18 for accommodating the rear anchor 16 is arranged in the box door 3, and an anchor claw of the rear anchor 16 penetrates through the inner wall of the box door and is arranged in the rear anchor groove 18. The heat insulation air bag, the front anchor 15 and the rear anchor 16 are all made of elastic rubber materials, when the refrigerator door 3 is opened or closed, the heat insulation air bag has a certain deformation amount, and the gap between the heat insulation air bag and the refrigerator body 1 can be reduced through the deformation of the heat insulation air bag. During the use process of the refrigerator, the heat insulation air bag deforms and draws the front anchor 15 and the rear anchor 16, the front anchor 15 and the rear anchor 16 are easily pulled out of the groove, the sealing element 4 is distorted and deformed, and good sealing can not be formed between the sealing element and the refrigerator body 1. Hot air is introduced into the heat insulation air bag through the hot air device 21 to enable the heat insulation air bag to be heated, softened and deformed, then the front anchor 15 and the rear anchor 16 are plugged into the respective grooves, the heat insulation air bag is cooled and hardened after the hot air device 21 is closed, the shape is kept under the traction of the front anchor 15 and the rear anchor 16, and good sealing is formed between the heat insulation air bag and the refrigerator body 1. The right section is also provided with a front fin 13, the right section is also provided with a rear fin 14, and the front fin 13 and the rear fin 14 block air while shielding the front anchor 15 and the rear anchor 16, so that the loss of cold energy is reduced.

Referring to fig. 1 to 5, a louver 23 is disposed on an upper end surface of the box door 3, and the louver 23 is connected to the hot air device 21. The right section 8 is provided with a vent hole 22, and a hot air device 21 introduces hot air from the air inlet hole 12 and discharges the hot air from the vent hole 22. The vent hole 22 may be provided with a plug, and the vent hole 22 may be kept closed when the hot air device 21 is not used, and the plug of the vent hole 22 may be manually opened when the hot air device 21 is used for ventilation. The panel for controlling the operation of the hot air device 21 is disposed on the front end surface of the box door 3, which is a common arrangement in the prior art, and the present invention is not described again.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. An ultra-low temperature refrigerator, comprising: the refrigerator comprises a refrigerator body, a refrigerator door, a sealing piece, an air inlet pipe, a hot air device and a refrigerating system, wherein the refrigerator door is hinged with the refrigerator body;

the heat insulation air bag is formed by sequentially surrounding a left section, a rear section, a right section and a front section, the section of the mounting groove is in an omega shape, the mounting part is connected with the rear section, the mounting part is in a ship anchor shape and is arranged in the mounting groove, an air inlet hole is formed in the rear section and is communicated with the heat insulation air bag, and the air inlet pipe penetrates through the mounting part and is communicated with the air inlet hole;

the upper end face of the box door is provided with a transom, the transom is connected with the hot air device, the right section is provided with a vent hole, the hot air device is introduced with hot air from the air inlet hole and discharged from the vent hole, and the sealing element is deformed and recovered by softening the sealing element through the hot air.

2. The ultra-low temperature refrigerator as claimed in claim 1, wherein the front section is provided with a mounting frame, a magnetic stripe is arranged in the mounting frame, a center sill is arranged on one side of the refrigerator body close to the refrigerator door, and the center sill can be attracted with the magnetic stripe.

3. The ultra-low temperature refrigerator of claim 1, wherein a front anchor is provided on the right section, a front anchor groove for receiving the front anchor is provided in the door, and a fluke of the front anchor is provided in the front anchor groove through an inner wall of the door.

4. The ultra-low temperature refrigerator of claim 1, wherein a rear anchor is provided on the left section, a rear anchor groove for receiving the rear anchor is provided in the door, and a fluke of the rear anchor is provided in the rear anchor groove through an inner wall of the door.

5. The ultra-low temperature refrigerator of claim 1, wherein the refrigerating system comprises: the refrigerator comprises a refrigerator body, a cold guide plate, a pulsating heat pipe and a heat insulation layer, wherein the heat insulation layer is arranged at the lower end of the refrigerator body, the cold guide plate is arranged in the refrigerator body, the pulsating heat pipe is connected with the cold guide plate, the refrigerator comprises a hot end and a cold end which are opposite, and the cold end of the refrigerator is connected with the cold guide plate.

6. The ultra-low-temperature refrigerator according to claim 5, further comprising: the refrigerator comprises a heat radiating fan, heat radiating fins and a ventilation opening, wherein the heat radiating fins are arranged at the hot end of the refrigerator, the ventilation opening is formed in the outer wall of the refrigerator, and the heat radiating fan is arranged between the ventilation opening and the heat radiating fins.