Cooling instrument

Abstract

The utility model relates to the technical field of biomedical equipment, and discloses a cooling instrument which comprises a cooling instrument shell, a top cover and a control panel, an opening is formed in the upper end of the cooling instrument shell, a Stirling cryocooler is arranged in the cooling instrument shell, a heat preservation frame is arranged at the opening in the upper end of the cooling instrument shell, and a containing frame is arranged in the heat preservation frame. An air inlet is formed in the upper end of the side wall of one side of the cooling instrument shell, and a dustproof assembly is arranged on the side wall of the cooling instrument shell and located at the air inlet. According to the cooling instrument, by arranging the filter screen, external dust and garbage can be effectively filtered, the two L-shaped clamping strips are pressed to be close to each other, when the ends of the L-shaped clamping strips are separated from the clamping grooves, and then the L-shaped clamping strips are pulled outwards, the filter screen can be effectively taken out, and the filter screen can be conveniently cleaned or replaced in time.

Description

Technical Field

[0001] The utility model relates to the technical field of biomedical equipment, in particular to a temperature reducing device. Background Art

[0002] When biological samples are cryopreserved, a programmed cooling device using liquid nitrogen spray or an ascending and descending cooling device using the temperature gradient of the gas phase in a liquid nitrogen container is often used to store the biological samples.

[0003] The existing method of preserving biological samples using liquid nitrogen is highly dangerous. Workers are prone to accidentally open the top cover of the cooling device, which affects the preservation effect of the biological samples. When the cooling device is working, the dust-proof effect of the air inlet is poor. Dust enters the cooling device, which is easy to affect the normal operation of the internal equipment and reduce the service life of the cooling device. Therefore, it is necessary to provide a cooling device to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a temperature reducing device to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a temperature reducing device, comprising:

[0006] The outer shell comprises a shell and a top cover which are movably connected, wherein both the shell and the top cover are provided with a heat insulation layer, and the heat insulation layer of the shell and the heat insulation layer of the top cover are buckled to form a closed heat preservation cavity;

[0007] A placement rack is arranged in the heat preservation chamber, and a cold conduction plate is arranged at the lower end of the placement rack;

[0008] A Stirling refrigerator, wherein a cold head is disposed at the top thereof, the cold head passes through the heat insulation layer of the shell and contacts the lower surface of the cold conduction plate;

[0009] The control unit includes a control panel and an electrical control component. The control panel is fixedly arranged in a window opened on the front side of the shell. The electrical control component is arranged in the shell. The control panel and the Stirling refrigerator are both electrically connected to the electrical control component.

[0010] Preferably, both the cold end and the hot end of the Stirling refrigerator are provided with temperature sensors, and the temperature sensors are electrically connected to the electrical control component.

[0011] Preferably, an electromagnetic lock is provided at the front end of the top cover, and a hinge is provided at the rear end of the top cover. The top cover is movably connected to the shell through the hinge. A sealing ring is provided on the top cover, and a sealing connection is achieved between the insulation layer of the shell and the insulation layer of the top cover through the sealing ring.

[0012] Preferably, the cooling plate is arranged horizontally, a clamp assembly is arranged on the outer side of the cold head, and the cold head is fixedly connected to the cooling plate through the clamp assembly.

[0013] Preferably, an air inlet and an air outlet are respectively provided on the shell, the Stirling refrigerator has an air inlet and an air outlet, the air inlet of the Stirling refrigerator is interconnected with the air inlet of the shell, and the exhaust port of the Stirling refrigerator is interconnected with the exhaust port of the shell.

[0014] Preferably, the air inlet is located on the side of the shell, and the height of the air inlet is set according to the height of the air inlet at the upper end of the Stirling refrigerator;

[0015] The exhaust port is located at the back of the shell, and the height of the exhaust port is set according to the height of the exhaust port at the lower end of the Stirling refrigerator;

[0016] An exhaust fan is arranged between the exhaust port of the shell and the exhaust port of the Stirling refrigerator.

[0017] Preferably, a dustproof component is provided at the air inlet of the shell, and the dustproof component includes a mounting frame and a filter screen. The mounting frame is fixedly connected to the side wall of the shell, and a slot that cooperates with the filter screen is provided inside the mounting frame. A plurality of ventilation holes are provided on the side wall of the mounting frame, and the ventilation holes are arranged in an array.

[0018] Preferably, the dustproof component also includes a T-shaped seat, an L-shaped clip and a plurality of return springs, one end of the filter screen is connected to the T-shaped seat, two L-shaped clips are provided, and the two L-shaped clips are slidably arranged on the T-shaped seat and are symmetrically arranged with the vertical rod of the T-shaped seat as the axis of symmetry. On both sides of the vertical rod, a plurality of return springs are divided into two groups and are symmetrically distributed with the vertical rod of the T-shaped seat as the axis of symmetry, one end of the return spring is connected to the L-shaped clip, and the other end of the return spring is connected to the vertical rod of the T-shaped seat, and the side wall of the socket of the installation frame is provided with a slot that cooperates with the end of the L-shaped clip.

[0019] Preferably, a bottom plate is provided at the lower end of the shell, and support feet are fixedly provided at four corners of the lower end surface of the bottom plate, and the electrical control component and the Stirling refrigerator are both installed on the bottom plate.

[0020] Preferably, the thermal insulation layer includes a polytetrafluoroethylene thermal insulation layer and a foam thermal insulation layer which are sequentially arranged from the inside to the outside.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The cooling device can effectively filter out external dust and garbage by setting dust-proof components and filters, preventing dust and garbage from entering the cooling device shell and affecting the normal operation of the device. By pressing the two L-shaped card strips close to each other, when the end of the L-shaped card strip is out of the card slot, and then pulling the L-shaped card strip outward, the filter can be effectively removed, which is convenient for timely cleaning or replacement of the filter.

[0023] 2. The cooling instrument is equipped with an electromagnetic lock, which can effectively ensure that the top cover is closed to prevent the operator from accidentally opening the top cover and affecting the effective preservation of biological samples. Support feet are fixedly provided at the four corners of the lower end surface of the bottom plate. The bottom plate and the support feet can effectively support the cooling instrument and ensure the overall stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the cooling device of the utility model;

[0025] Figure 2 It is a cross-sectional view of the side view of the temperature reducing device of the utility model;

[0026] Figure 3 This is a bottom view of the temperature-reducing device of the utility model;

[0027] Figure 4 This is a schematic diagram of the working principle of the dust-proof component of the cooling device of the utility model;

[0028] Figure 5 For this utility model Figure 4 A magnified schematic diagram of the structure in the middle.

[0029] In the figure: 1. Shell; 101. Bottom plate; 102. Support foot; 2. Top cover; 201. Electromagnetic lock; 202. Sealing ring; 3. Control unit; 31. Control panel; 32. Electrical control component; 4. Stirling refrigerator; 401. Cold head; 5. Exhaust fan; 6. Insulation chamber; 7. Placement rack; 8. Cold guide plate; 9. Dustproof component; 901. Installation frame; 902. Card slot; 903. Filter; 904. T-shaped seat; 905. L-shaped card strip; 906. Reset spring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-5 , a cooling device, comprising:

[0032] The housing comprises a shell 1 and a top cover 2 which are movably connected, wherein both the shell 1 and the top cover 2 are provided with a heat insulation layer, and the heat insulation layer of the shell 1 and the heat insulation layer of the top cover 2 are buckled to form a closed heat preservation cavity 6;

[0033] A placement rack 7 is arranged in the heat preservation chamber 6, and a cold guide plate 8 is arranged at the lower end of the placement rack 7;

[0034] The Stirling refrigerator 4 has a cold head 401 disposed on its top, the cold head 401 passes through the heat insulation layer of the shell 1 and contacts the lower surface of the cold conduction plate 8;

[0035] The control unit 3 includes a control panel 31 and an electrical control component 32. The control panel 31 is fixedly arranged in a window opened on the front side of the shell 1. The electrical control component 32 is arranged in the shell 1. The control panel 31 and the Stirling refrigerator 4 are both electrically connected to the electrical control component 32.

[0036] Among them; the cold end and the hot end of the Stirling refrigerator 4 are both provided with temperature sensors, and the temperature sensor is electrically connected to the electrical control component 32. By providing the temperature sensor, the working condition of the Stirling refrigerator 4 can be detected in time, and the temperature condition can be transmitted to the control panel 31.

[0037] Among them; an electromagnetic lock 201 is provided at the front end of the top cover 2, a hinge is provided at the rear end of the top cover 2, the top cover 2 is movably connected to the shell 1 through the hinge, a sealing ring 202 is provided on the top cover 2, and the insulation layer of the shell 1 and the insulation layer of the top cover 2 are sealed and connected through the sealing ring 202, the cold conduction plate 8 is horizontally arranged, and a clamping hoop assembly is provided on the outer side of the cold head 401, and the cold head 401 is fixedly connected to the cold conduction plate 8 through the clamping hoop assembly. By providing the clamping hoop assembly, the stability between the cold head 401 and the cold conduction plate 8 is guaranteed, and by providing the electromagnetic lock 201, the top cover 2 can be effectively guaranteed to be closed, avoiding the operator from accidentally opening the top cover 2 and affecting the effective preservation of biological samples.

[0038] Among them, the shell 1 is respectively provided with an air inlet and an air exhaust port, the Stirling refrigerator 4 has an air inlet and an air exhaust port, the air inlet of the Stirling refrigerator 4 is interconnected with the air inlet of the shell 1, and the exhaust port of the Stirling refrigerator 4 is interconnected with the exhaust port of the shell 1. By providing the air inlet and the air exhaust port, the effective circulation of the gas is guaranteed.

[0039] Wherein; the air inlet is located on the side of the housing 1, and the height of the air inlet is set according to the height of the air inlet at the upper end of the Stirling refrigerator 4;

[0040] The exhaust port is located at the back of the housing 1, and the height of the exhaust port is set according to the height of the exhaust port at the lower end of the Stirling refrigerator 4;

[0041] An exhaust fan 5 is arranged between the exhaust port of the shell 1 and the exhaust port of the Stirling refrigerator 4. The height of the air inlet of the shell 1 is set according to the height of the air inlet at the upper end of the Stirling refrigerator 4, and the height of the air outlet is set according to the height of the exhaust port at the lower end of the Stirling refrigerator 4, which facilitates alignment and connection, allowing the gas to flow smoothly, thereby improving the heat dissipation efficiency inside the Stirling refrigerator 4.

[0042] Among them; a dustproof component 9 is arranged at the air inlet of the shell 1, and the dustproof component 9 includes a mounting frame 901 and a filter screen 903. The mounting frame 901 is fixedly connected to the side wall of the shell 1, and a slot cooperating with the filter screen 903 is opened inside the mounting frame 901. A plurality of ventilation holes are opened on the side wall of the mounting frame 901, and the ventilation holes are arranged in an array. By setting the filter screen 903, external dust and garbage can be effectively filtered to prevent dust and garbage from entering the shell 1 and affecting the normal operation of the equipment.

[0043] Among them, the dustproof component 9 also includes a T-shaped seat 904, an L-shaped clip 905 and a plurality of return springs 906. One end of the filter 903 is connected to the T-shaped seat 904. Two L-shaped clips 905 are provided. The two L-shaped clips 905 are slidably arranged on the T-shaped seat 904 and are symmetrically arranged with the vertical rod of the T-shaped seat 904 as the symmetry axis. On both sides of the vertical rod, a plurality of return springs 906 are divided into two groups and are symmetrically distributed with the vertical rod of the T-shaped seat 904 as the symmetry axis. One end of the return spring 906 is connected to the L-shaped clip 905, and the other end of the return spring 906 It is connected to the vertical rod of the T-shaped seat 904, and the side wall of the socket of the installation frame 901 is provided with a slot 902 that cooperates with the end of the L-shaped clip 905. When the filter 903 is used for a long time and a large amount of dust and garbage is attached to it, the two L-shaped clips 905 are pressed close to each other. At this time, the reset spring 906 is in a contracted state. As the two L-shaped clips 905 approach each other, the end of the L-shaped clip 905 disengages from the slot 902, and then the L-shaped clip 905 is pulled outward, the filter 903 can be effectively removed, which is convenient for timely cleaning or replacement of the filter 903.

[0044] Among them; a base plate 101 is provided at the lower end of the shell 1, and support feet 102 are fixedly provided at the four corners of the lower end surface of the base plate 101. The electrical control component 32 and the Stirling refrigerator 4 are both installed on the base plate 101. The insulation layer includes a polytetrafluoroethylene insulation layer and a foam insulation layer arranged in sequence from the inside to the outside. By providing the base plate 101 and the support feet 102, the cooling device can be effectively supported and the overall stability can be ensured. The insulation layer can effectively ensure the insulation effect.

[0045] Working principle: biological samples are placed in the placement rack 7, and the Stirling refrigerator 4 works. The placement rack 7 can be quickly cooled by providing a cold plate 8. The electromagnetic lock 201 can effectively ensure that the top cover 2 is closed, preventing the operator from accidentally opening the top cover 2 and affecting the effective preservation of the biological samples.

[0046] Furthermore, by providing a filter 903, external dust and garbage can be effectively filtered to prevent dust and garbage from entering the shell 1 and affecting the normal operation of the equipment. When the filter 903 is used for a long time and a large amount of dust and garbage is attached to it, the two L-shaped clips 905 are pressed close to each other. At this time, the reset spring 906 is in a contracted state. As the two L-shaped clips 905 approach each other, the end of the L-shaped clip 905 disengages from the slot 902, and the L-shaped clip 905 is pulled outward, the filter 903 can be effectively removed, which is convenient for timely cleaning or replacement of the filter 903.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling device, characterized in that: include: The outer shell comprises a shell (1) and a top cover (2) which are movably connected, wherein both the shell (1) and the top cover (2) are provided with a heat insulation layer, and the heat insulation layer of the shell (1) and the heat insulation layer of the top cover (2) are buckled to form a closed heat preservation cavity (6); A placement rack (7) is arranged in the heat preservation chamber (6), and a cooling plate (8) is arranged at the lower end of the placement rack (7); A Stirling refrigerator (4) having a cold head (401) disposed at the top thereof, the cold head (401) passing through the heat insulation layer of the shell (1) and contacting the lower surface of the cold conduction plate (8); The control unit (3) comprises a control panel (31) and an electrical control component (32), wherein the control panel (31) is fixedly arranged in a window opened on the front of the housing (1), the electrical control component (32) is arranged in the housing (1), and the control panel (31) and the Stirling refrigerator (4) are both electrically connected to the electrical control component (32).

2. The cooling device according to claim 1, characterized in that: The cold end and the hot end of the Stirling refrigerator (4) are both provided with temperature sensors, and the temperature sensors are electrically connected to the electrical control component (32).

3. The temperature reducing device according to claim 1, characterized in that: The front end of the top cover (2) is provided with an electromagnetic lock (201), the rear end of the top cover (2) is provided with a hinge, the top cover (2) is movably connected to the shell (1) via the hinge, a sealing ring (202) is provided on the top cover (2), and the heat insulation layer of the shell (1) and the heat insulation layer of the top cover (2) are sealed and connected via the sealing ring (202).

4. The cooling device according to claim 1, characterized in that: The cold conduction plate (8) is arranged horizontally, a clamp assembly is arranged on the outer side of the cold head (401), and the cold head (401) is fixedly connected to the cold conduction plate (8) via the clamp assembly.

5. The temperature reducing device according to claim 1, characterized in that: The shell (1) is provided with an air inlet and an air outlet, respectively; the Stirling refrigerator (4) has an air inlet and an air outlet; the air inlet of the Stirling refrigerator (4) is in communication with the air inlet of the shell (1); and the air outlet of the Stirling refrigerator (4) is in communication with the air outlet of the shell (1).

6. The temperature reducing device according to claim 5, characterized in that: The air inlet is located on a side surface of the housing (1), and the height of the air inlet is set according to the height of the air inlet at the upper end of the Stirling refrigerator (4); The exhaust port is located on the back side of the housing (1), and the height of the exhaust port is set according to the height of the exhaust port at the lower end of the Stirling refrigerator (4); An exhaust fan (5) is provided between the exhaust port of the housing (1) and the exhaust port of the Stirling refrigerator (4).

7. The temperature reducing device according to claim 5, characterized in that: A dustproof component (9) is arranged at the air inlet of the shell (1), and the dustproof component (9) comprises a mounting frame (901) and a filter screen (903). The mounting frame (901) is fixedly connected to the side wall of the shell (1), and a slot cooperating with the filter screen (903) is provided inside the mounting frame (901). A plurality of ventilation holes are provided on the side wall of the mounting frame (901), and the ventilation holes are arranged in an array.

8. The temperature reducing device according to claim 7, characterized in that: The dustproof component (9) further comprises a T-shaped seat (904), an L-shaped clip (905) and a plurality of return springs (906); one end of the filter screen (903) is connected to the T-shaped seat (904); two L-shaped clips (905) are provided; the two L-shaped clips (905) are respectively slidably provided on the T-shaped seat (904) and are symmetrically provided with the vertical rod of the T-shaped seat (904) as the symmetry axis; on both sides of the vertical rod, a plurality of return springs (906) are divided into two groups and are symmetrically distributed with the vertical rod of the T-shaped seat (904) as the symmetry axis; one end of the return spring (906) is connected to the L-shaped clip (905), and the other end of the return spring (906) is connected to the vertical rod of the T-shaped seat (904); a slot (902) which cooperates with the end of the L-shaped clip (905) is provided on the side wall of the socket of the installation frame (901).

9. The temperature reducing device according to claim 1, characterized in that: A base plate (101) is provided at the lower end of the shell (1), and support legs (102) are fixedly provided at the four corners of the lower end surface of the base plate (101), and the electrical control component (32) and the Stirling refrigerator (4) are both installed on the base plate (101).

10. The temperature reducing device according to claim 1, characterized in that: The heat insulating layer comprises a polytetrafluoro heat insulating layer and a foam heat insulating layer which are sequentially arranged from the inside to the outside.

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