Full-automatic deep hypothermia sample rewarming device

Abstract

The invention provides a full-automatic deep hypothermia sample rewarming device which comprises a heat preservation shell, an air duct of an annular structure is fixedly connected to the interior of the heat preservation shell, a plurality of first fans are fixedly connected to the two sides of the air duct correspondingly, an electric heating net is fixedly connected to one side of each first fan, and a flow guide protrusion is arranged in the air duct; a convex surface on one side of the heat preservation shell changes the flowing direction of hot air, a refrigeration unit is fixedly connected to the middle of the upper end of the heat preservation shell, the refrigeration unit comprises a semiconductor refrigeration sheet, heat exchange pieces are fixedly connected to the two sides of the semiconductor refrigeration sheet, and the refrigeration side of the semiconductor refrigeration sheet faces the heat preservation shell; the upper end of the heat preservation shell is fixedly connected with a second fan, and the second fan is located on one side of the heat exchange piece located on the upper portion. According to the invention, peripheral samples are rewarmed through circulating air, so that the rewarming uniformity is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of rewarming devices, and particularly to a fully automatic deep low-temperature sample rewarming device. Background Art

[0002] In the fields of medicine, biology, etc., before conducting certain experiments, it is necessary to thaw samples stored at low temperatures, so rewarming equipment and thawing devices are used.

[0003] The main structures of the rewarming equipment and thawing devices are heat-insulating boxes, and electric heating elements and convection fans are arranged inside the boxes. During use, the wind speed differences around the samples are too large, resulting in uneven rewarming of the samples and interfering with subsequent experiments. In addition, most of the existing devices only have the ability to rewarm, but the heat-insulating ability is relatively poor, and personnel need to patrol to ensure that the sample temperature can reach the set rewarming temperature accurately before being taken. Summary of the Invention

[0004] To solve the above problems, the present invention discloses a fully automatic deep low-temperature sample rewarming device, which includes a heat-insulating housing. An annular air duct is fixedly connected inside the heat-insulating housing. A plurality of first fans are fixedly connected to both sides of the air duct. An electric heating grid is fixedly connected to one side of the first fan. A flow guiding protrusion is arranged inside the air duct, and the convex surface on one side thereof changes the flow direction of the hot air. The first fan is started, and then the electric heating grid is energized to generate heat to heat the air, so that the hot air circulates in the air duct. In addition, a flow guiding protrusion is also provided to transfer the hot air to the sample for thawing treatment.

[0005] A refrigeration unit is fixedly connected to the middle of the upper end of the heat-insulating housing. The refrigeration unit includes a semiconductor refrigeration chip. Heat exchange components are fixedly connected to both sides of the semiconductor refrigeration chip, and the side of the semiconductor refrigeration chip for refrigeration faces the heat-insulating housing. A second fan is fixedly connected to the upper end of the heat-insulating housing, and the second fan is located on one side of the upper heat exchange component. When the sample is thawed to the set temperature, it is necessary to keep the sample warm. When the sample temperature is low, the electric heating grid and the first fan work. When the sample temperature is high, the semiconductor refrigeration chip works to transfer heat and reduce the temperature inside the heat-insulating housing. At the same time, the first fan and the second fan keep working.

[0006] Preferably, a bracket is arranged inside the heat-insulating housing. The bracket includes a slide rail. A slider is slidably matched on the slide rail. A connecting block is fixedly connected to the slider. A wire rack is arranged on the connecting block. A fixing screw is threadedly connected to the slider, and the end of the fixing screw abuts against the slide rail. The wire rack is used to hold the placed sample, and the height of the wire rack can be changed as the slider slides up and down, aiming to ensure that samples of different sizes can be located at the center inside the heat-insulating housing.

[0007] Preferably, a control box is provided at the upper end of the heat preservation housing. Ventilation holes are provided on both sides of the control box, and the second fan is located inside the control box. When the second fan operates, one side of the ventilation hole sucks air, and the other side sends out air, carrying the heat on the heat exchange member.

[0008] Preferably, a slope is provided on the front surface of the control box, and buttons and a display screen are provided on the slope. The buttons and the display screen are used for human-computer interaction.

[0009] Preferably, a plurality of temperature sensors are fixedly connected to the inner wall of the heat preservation housing, and a plurality of support legs are fixedly connected to the bottom of the heat preservation housing. The multiple temperature sensors detect the temperature distribution inside the heat preservation housing.

[0010] Preferably, a heat preservation box door is rotatably connected to the front surface of the heat preservation housing, and a handle is fixedly connected to one side of the front surface of the heat preservation box door. Hold the heat preservation box door and open it to take and place samples.

[0011] The beneficial effects of the present invention are as follows: 1. A wind channel is provided, and a first fan and an electric heating grid are provided in the wind channel. When the two operate, the hot air generated can circulate around the sample, thereby ensuring that the sample can be evenly rewarmed.

[0012] 2. A refrigeration unit is provided, and in cooperation with components such as an electric heating grid, it is ensured that the sample can be maintained after reaching the rewarming temperature, which is convenient for experimental personnel to take at any time.

[0013] 3. A bracket is provided, and the height of the wire rack in the bracket can be adjusted. After different small samples are placed on the bracket, by adjusting the height of the wire rack, it is still ensured that the sample is in the middle of the heat preservation housing, ensuring the uniformity of the hot air circulation around, that is, facilitating the uniform rewarming of the sample. Description of the Drawings

[0014] Figure 1 is a three-dimensional schematic diagram of the present invention; Figure 2 is an internal structure schematic diagram of the present invention; Figure 3 is a three-dimensional schematic diagram of the bracket of the present invention; Figure 4 is a cross-sectional schematic diagram of the present invention; Figure 5 is a schematic diagram of the refrigeration unit of the present invention.

[0015] List of Reference Numerals: 1. Thermal insulation housing; 2. Thermal insulation box door; 3. Handle; 4. Ventilation hole; 5. Button; 6. Control box; 7. Display screen; 8. Air duct; 9. First fan; 10. Bracket; 11. Support leg; 12. Temperature sensor; 13. Flow guiding protrusion; 14. Electric heating grid; 15. Refrigeration unit 101. Grid; 102. Connecting block; 103. Slide block; 104. Fixed screw; 105. Slide rail; 151. Heat exchange element; 152. Thermoelectric cooler; 153. Second fan Detailed implementation mode

[0016] The present invention will be further clarified below in conjunction with the accompanying drawings and specific implementation modes. It should be understood that the following specific implementation modes are only used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component

[0017] As Figures 1 to 5 shown, a fully automatic deep low-temperature sample rewarming device includes a thermal insulation housing 1. The thermal insulation housing 1 is in a cuboid structure. An annular air duct 8 is fixedly connected inside the thermal insulation housing 1. A number of first fans 9 are fixedly connected to both sides of the air duct 8. By starting the first fans 9, air can be circulated in the air duct 8. An electric heating grid 14 is fixedly connected to one side of the first fan 9. The electric heating grid 1 is energized to generate heat and heat the air. The hot air circulates around the sample inside the thermal insulation housing 1. A flow guiding protrusion 13 is arranged inside the air duct 8, and the convex surface on one side thereof changes the flow direction of the hot air. The arrangement of the flow guiding protrusion 13 ensures that there is enough hot air blowing towards the sample

[0018] A refrigeration unit 15 is fixedly connected to the middle of the upper end of the thermal insulation housing 1. The refrigeration unit 15 provides the refrigeration required inside the thermal insulation housing 1 to ensure that the sample is in a constant temperature state after rewarming. The refrigeration unit 15 includes a thermoelectric cooler 152. The thermoelectric cooler 152 is energized to transfer heat to the other side, realizing refrigeration on one side and heating on the other side. Heat exchange elements 151 are fixedly connected to both sides of the thermoelectric cooler 152. The heat exchange element 151 located below is inside the thermal insulation housing 1, and the heat exchange element 152 located above is above the thermal insulation housing 1. And the refrigerating side of the thermoelectric cooler 152 faces the thermal insulation housing 1. When the thermoelectric cooler 152 works, the cold quantity is transferred to the inside of the thermal insulation housing 1 through the heat exchange element 151 below. A second fan 153 is fixedly connected to the upper end of the thermal insulation housing 1, and the second fan 153 is located on one side of the heat exchange element 151 above. When the thermoelectric cooler 152 operates, the second fan 153 works to blow away the heat on the upper heat exchange element 151

[0019] Inside the heat preservation housing 1, there is a bracket 10 for placing samples. The hot circulating air performs rewarming operations around the samples. The bracket 10 includes a slide rail 105 with a T-shaped cross-section, which is vertically and fixedly connected to the inner wall of the heat preservation housing 1. A slider 103 is slidably fitted on the slide rail 105. A connecting block 102 is fixedly connected to the slider 103, and a wire mesh frame 101 is arranged on the connecting block 102. The wire mesh frame 101 is fixedly connected to the slider 103 by means of the connecting block 102. A fixing screw 104 is threadedly connected to the slider 103, and the end of the fixing screw 104 abuts against the slide rail 105. According to the size of the sample, the height of the wire mesh frame 101 is adjusted in advance to ensure that the sample is placed at the center inside the heat preservation housing 1. Finally, the fixing bolt 104 is tightened to fix and maintain the height.

[0020] At the upper end of the heat preservation housing 1, there is a control box 6. Ventilation holes 4 are arranged on both sides of the control box 6 for ventilation inside and outside the control box 6. A second fan 153 is located inside the control box 6. When the second fan 153 operates, cold air is inhaled and the heated air is sent out.

[0021] A slope is arranged on the front of the control box 6, and buttons 5 and a display screen 7 are arranged on the slope for human-machine interaction. Through a control unit preset inside the control box 6, the rewarming temperature, the rewarming rate / the time required for rewarming, the voice notification at the end of rewarming, etc. can be set. In addition, a storage battery is arranged inside the control box 6 to ensure that parameters such as the temperature inside the heat preservation housing 1 can be maintained and recorded after the device loses power.

[0022] Several temperature sensors 12 are fixedly connected to the inner wall of the heat preservation housing 1. The arrangement of multiple temperature sensors 12 can obtain the temperature distribution inside the heat preservation housing 1, so as to better adjust the rewarming parameters, such as the rotation speed of the first fan 9, the power of the electric heating grid 14, etc. Several support legs 11 are fixedly connected to the bottom of the heat preservation housing 1, and the support legs 11 provide support.

[0023] A heat preservation box door 2 is rotatably connected to the front of the heat preservation housing 1. A handle 3 is fixedly connected to one side of the front of the heat preservation box door 2. Holding the handle 3 and rotating to open the heat preservation box door 2 is for taking and placing samples.

[0024] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A fully automatic deep-cold sample rewarming device, characterized in that: The heat-insulating shell (1) comprises a ring-shaped air duct (8) fixedly connected to the interior of the heat-insulating shell (1), a plurality of first fans (9) fixedly connected to both sides of the air duct (8), one side of the first fan (9) fixedly connected to an electric heating net (14), and a flow-guiding protrusion (13) is arranged inside the air duct (8), the convex surface of one side of the protrusion changes the flow direction of the hot air; A refrigeration unit (15) is fixedly connected to the middle of the upper end of the thermal insulation shell (1), the refrigeration unit (15) comprising a semiconductor refrigeration plate (152), both sides of the semiconductor refrigeration plate (152) are fixedly connected to a heat exchange element (151), and the cooling side of the semiconductor refrigeration plate (152) faces the thermal insulation shell (1), and a second fan (153) is fixedly connected to the upper end of the thermal insulation shell (1), and the second fan (153) is located on one side of the upper heat exchange element (151).

2. A fully automatic deep cryogenic sample rewarming device according to claim 1, characterized in that: A bracket (10) is arranged inside the heat-insulating shell (1), the bracket (10) comprising a slide rail (105), a slider (103) is slidably arranged on the slide rail (105), a connecting block (102) is fixedly connected to the slider (103), a grid (101) is arranged on the connecting block (102), a fixing screw (104) is threadedly connected to the slider (103), and the end of the fixing screw (104) abuts against the slide rail (105).

3. A fully automatic deep cryogenic sample rewarming device according to claim 1, characterized in that: A control box (6) is provided at the upper end of the heat-insulating shell (1), ventilation holes (4) are provided on both sides of the control box (6), and the second fan (153) is located inside the control box (6).

4. A fully automatic deep-cold sample rewarming device according to claim 3, characterized in that: The front of the control box (6) is provided with an inclined surface, and buttons (5) and a display screen (7) are provided on the inclined surface.

5. The fully automatic deep cryogenic sample rewarming device according to claim 1, characterized in that: A plurality of temperature sensors (12) are fixedly connected to the inner wall of the heat-insulating shell (1), and a plurality of supporting legs (11) are fixedly connected to the bottom of the heat-insulating shell (1).

6. The fully automatic deep cryogenic sample rewarming device according to claim 1, characterized in that: The front side of the heat-insulating shell (1) is rotatably connected to a heat-insulating box door (2), and one side of the front side of the heat-insulating box door (2) is fixedly connected to a handle (3).

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