A sample refrigeration device for a laboratory

Abstract

This utility model relates to a sample refrigeration device for laboratory use, belonging to the field of laboratory sample storage technology. The sample refrigeration device for laboratory use includes: a vertical refrigerator and a uniformly distributed modular storage mechanism. One end of the vertical refrigerator has uniformly distributed independent storage chambers. The modular storage mechanism includes an insulated box fixedly connected to the interior of each independent storage chamber. The top of the insulated box has an air inlet and an air outlet. Through a spring-pre-compressed elastic drive, when the storage drawer is pulled out, the baffle plate automatically resets and seals the air inlet and outlet, forming a dynamic sealed space between the baffle plate and the insulated box. This mechanism significantly reduces cold air leakage during opening and closing operations, avoids overall temperature fluctuations caused by opening a single independent storage chamber, and reduces energy consumption caused by frequent compressor starts and stops, achieving high efficiency and energy saving.

Description

Technical Field

[0001] This utility model relates to the field of laboratory sample storage technology, and in particular to a sample refrigeration device for laboratory use. Background Technology

[0002] Laboratory sample refrigeration equipment is specialized equipment used to preserve biological, chemical, or medical samples at low temperatures. It inhibits sample metabolism, microbial growth, and chemical degradation through precise temperature control, thereby ensuring sample stability and traceability. Refrigerated cabinets, as commonly used laboratory equipment, currently generally employ a partitioned design for categorized sample storage.

[0003] However, this design has a significant flaw: when researchers retrieve some samples, they need to completely open the cabinet door, resulting in a large loss of cold air and rapid fluctuations in the temperature inside the cabinet, which in turn affects the temperature-controlled preservation of other unused samples. Utility Model Content

[0004] Therefore, it is necessary to provide a sample refrigeration device for laboratories, which addresses the problem that existing laboratory sample refrigeration devices can easily affect the preservation of other samples when placing or taking samples in.

[0005] A sample refrigeration device for laboratory use includes: a vertical refrigerator and a uniformly distributed modular storage mechanism, wherein one end of the vertical refrigerator has uniformly distributed independent storage compartments.

[0006] In one embodiment, the modular storage mechanism includes an insulated box fixedly connected to the interior of an independent storage chamber. The top of the insulated box has an air inlet and an air outlet. A baffle plate is slidably connected inside the insulated box. A spring is fixedly connected to the end of the baffle plate facing away from the air inlet and air outlet, and the spring is always in a compressed state. A storage drawer is inserted into the end of the insulated box facing away from the independent storage chamber. The end of the storage drawer facing the spring extends into the interior of the insulated box and contacts the baffle plate.

[0007] In one embodiment, the inner bottom wall, the inner bottom wall and the two opposite vertical inner walls of the heat insulation box are all provided with horizontal guide grooves that are staggered with the air inlet and the air outlet. The end of the baffle plate facing the horizontal guide groove extends into the interior of the adjacent horizontal guide groove and is slidably connected to the adjacent horizontal guide groove.

[0008] In one embodiment, the number of springs is two, and the springs are disposed inside adjacent horizontal guide slots.

[0009] In one embodiment, a guide rod is fixedly connected to one of the vertical inner walls of the horizontal guide groove, which is provided with a spring. One end of the guide rod passes through the baffle plate and the spring in sequence and is fixedly connected to the other vertical inner wall of the horizontal guide groove.

[0010] In one embodiment, an adjustment handle is rotatably connected to the end of the storage drawer facing away from the partition plate, the end of the adjustment handle facing the partition plate extends through the storage drawer, and a locking block is fixedly connected to the end of the adjustment handle facing the partition plate, which engages with the adjacent horizontal guide groove.

[0011] In one embodiment, the vertical cross-sectional shape of the adjustment handle is T-shaped, and the horizontal cross-sectional shape of the locking block is I-shaped.

[0012] In one embodiment, a rubber sealing ring is embedded in the end of the storage drawer facing the separate storage compartment, and the rubber sealing ring is in contact with the heat insulation box.

[0013] Beneficial effects

[0014] The aforementioned sample refrigeration device for the laboratory utilizes a spring-pre-compression design for elastic drive. When the storage drawer is pulled out, the baffle plate automatically resets and seals the air inlet and outlet, forming a dynamic sealed space between the baffle plate and the insulation box. This mechanism can significantly reduce cold air leakage during opening and closing operations, avoid overall temperature fluctuations caused by opening a single independent storage compartment, and reduce energy consumption of the compressor due to frequent start-stop operations, thus achieving high efficiency and energy saving.

[0015] Each independent storage compartment is cooled independently through dedicated PVC antibacterial air ducts and branch solenoid valves, and the temperature is precisely regulated by a microprocessor PID temperature control module. The horizontal guide groove inside the heat insulation box works with the rubber sealing ring to ensure the airtightness of the storage drawers when closed. Combined with the HEPA filtration system, it maintains an ISO-level clean environment and effectively prevents temperature interference and cross-contamination between different sample storage areas. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the modular storage mechanism in this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the modular storage mechanism in this utility model;

[0020] Figure 4 This is an exploded view of the modular storage mechanism in this utility model.

[0021] Figure label:

[0022] 100. Vertical refrigerator; 110. Independent storage compartment; 200. Modular storage mechanism; 210. Insulated box; 211. Air inlet; 212. Air outlet; 213. Horizontal guide groove; 220. Baffle plate; 230. Spring; 240. Storage drawer; 250. Guide rod; 260. Adjustment handle; 270. Locking block; 280. Rubber sealing ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] The following is combined Figures 1-4 This invention describes a sample refrigeration device for use in a laboratory.

[0029] In one embodiment, a sample refrigeration device for a laboratory includes: a vertical refrigerator 100 and a uniformly distributed modular storage mechanism 200, wherein one end of the vertical refrigerator 100 has uniformly distributed independent storage chambers 110.

[0030] like Figure 2 , Figure 3 and Figure 4 As shown, the modular storage mechanism 200 includes an insulated box 210 fixedly connected inside the independent storage chamber 110. The top of the insulated box 210 has an air inlet 211 and an air outlet 212. A baffle plate 220 is slidably connected inside the insulated box 210. A spring 230 is fixedly connected to the end of the baffle plate 220 facing away from the air inlet 211 and the air outlet 212, and the spring 230 is always in a compressed state. A storage drawer 240 is inserted into the end of the insulated box 210 facing away from the independent storage chamber 110. The end of the storage drawer 240 facing the spring 230 extends into the interior of the insulated box 210 and contacts the baffle plate 220.

[0031] The heat insulation box 210 has horizontal guide grooves 213 that are staggered with the air inlet 211 and the air outlet 212 on its inner bottom wall, inner bottom wall and two opposite vertical inner walls. One end of the baffle plate 220 facing the horizontal guide groove 213 extends into the interior of the adjacent horizontal guide groove 213 and is slidably connected to the adjacent horizontal guide groove 213. There are two springs 230, which are set inside the adjacent horizontal guide grooves 213. One of the vertical inner walls of the horizontal guide groove 213 with the spring 230 is fixedly connected to a guide rod 250. One end of the guide rod 250 passes through the baffle plate 220 and the spring 230 in sequence and is fixedly connected to the other vertical inner wall of the horizontal guide groove 213.

[0032] An adjustment handle 260 is rotatably connected to the end of the storage drawer 240 facing away from the partition plate 220. The end of the adjustment handle 260 facing the partition plate 220 extends through the storage drawer 240. A locking block 270 is fixedly connected to the end of the adjustment handle 260 facing the partition plate 220, which engages with the adjacent horizontal guide groove 213. The vertical cross-section of the adjustment handle 260 is T-shaped, and the horizontal cross-section of the locking block 270 is I-shaped. A rubber sealing ring 280 is embedded in the end of the storage drawer 240 facing the independent storage compartment 110, and the rubber sealing ring 280 contacts the heat insulation box 210.

[0033] In this embodiment, when the experimenter needs to store the sample, the sample is first placed inside the storage drawer 240, and then the storage drawer 240 is inserted into the heat insulation box 210 until the storage drawer 240 is in place. At this time, the experimenter only needs to rotate the adjustment handle 260 ninety degrees. The adjustment handle 260 drives the locking block 270 to rotate into the corresponding horizontal guide groove 213 and abut against the vertical inner wall of the horizontal guide groove 213. During this process, the storage drawer 240 pushes against the baffle plate 220 and gradually penetrates into the heat insulation box 210. When the baffle plate 220 passes the air inlet 211 and the air outlet 212, the cold air can normally enter the interior of the storage drawer 240 through the air inlet 211, and the cooled gas can normally exit the heat insulation box 210 through the air outlet 212.

[0034] It should be noted that the structure of the upright refrigerator 100 includes, but is not limited to, the following:

[0035] Cabinet structure: It adopts a double-layer stainless steel structure, with the inner layer being 304 medical-grade stainless steel and the outer layer being anti-corrosion coated steel plate. The middle layer is filled with polyurethane foam insulation layer to ensure temperature stability within the range of -20℃ to 4℃. The front of the cabinet is divided into evenly distributed independent storage compartments 110, and the heat insulation box 210 is fixedly connected to the interior of the independent storage compartments 110 by bolts.

[0036] Air duct system: Independent air inlet and outlet pipes, both connected to the inner top wall of the independent storage compartment 110. The independent air inlet and outlet pipes are connected to air inlet 211 and air outlet 212 respectively. The independent air inlet pipe connects to the branch solenoid valve of the main refrigeration system, delivering cool air through PVC antibacterial ducts. The independent air outlet pipe uses a centrifugal fan to draw air back to the evaporator for recirculation, forming a closed-loop airflow. The ducts contain replaceable HEPA filters, meeting ISO Class 5 cleanliness requirements.

[0037] Control system: Microprocessor PID temperature control module, each storage compartment can be independently set with temperature, equipped with a 7-inch touch screen and abnormal alarm function.

[0038] Refrigeration cycle: A dual-compressor cascade refrigeration system is adopted: After pre-cooling by the high-temperature stage compressor, the low-temperature stage compressor pressurizes the refrigerant into the evaporator, and deep cooling is achieved through capillary tube throttling.

[0039] Airflow distribution: The main fan distributes the cold air generated by the evaporator to the air inlet pipes of each storage compartment, and the air speed is regulated by the air valves. When the return air returns through the air outlet pipe, the humidity sensor triggers the defrosting procedure.

[0040] Safety mechanisms: Multiple redundancy design: The backup power supply will operate stably for a specified time after a 100% power outage of the vertical refrigerator; the CO2 concentration sensor prevents oxygen deficiency in biological samples; and the data log stores temperature records.

[0041] Working principle: As the experimenter pulls out the storage drawer 240, the storage drawer 240 gradually moves away from the barrier plate 220. At the same time, the spring 230 drives the barrier plate 220, which is no longer obstructed, to stick to the storage drawer 240. When the barrier plate 220 passes the air inlet 211 and the air outlet 212, the barrier plate 220 and the heat insulation box 210 together form a movable sealed space, and confine the cold air ejected from the air inlet 211 within this movable sealed space. This can effectively reduce the amount of cold air lost inside the vertical refrigerator 100, so that the samples in other independent storage compartments 110 can be stored more stably, effectively reducing the interference of the external environment.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A sample refrigeration device for laboratory use, characterized in that, include: A vertical refrigerator (100) has evenly distributed independent storage compartments (110) at one end; A uniformly distributed modular storage mechanism (200) includes an insulated box (210) fixedly connected inside an independent storage chamber (110). The top of the insulated box (210) is provided with an air inlet (211) and an air outlet (212). A baffle plate (220) is slidably connected inside the insulated box (210). A spring (230) is fixedly connected to the end of the baffle plate (220) facing away from the air inlet (211) and the air outlet (212), and the spring (230) is always in a compressed state. A storage drawer (240) is inserted into the end of the insulated box (210) facing away from the independent storage chamber (110). The end of the storage drawer (240) facing the spring (230) extends into the interior of the insulated box (210) and contacts the baffle plate (220).

2. The sample refrigeration device for laboratory use according to claim 1, characterized in that, The heat insulation box (210) has horizontal guide grooves (213) that are staggered with the air inlet (211) and air outlet (212) on its inner bottom wall, inner bottom wall and two opposite vertical inner walls. The end of the baffle plate (220) facing the horizontal guide groove (213) extends into the interior of the adjacent horizontal guide groove (213) and is slidably connected to the adjacent horizontal guide groove (213).

3. The sample refrigeration device for laboratory use according to claim 2, characterized in that, There are two springs (230), and the springs (230) are disposed inside adjacent horizontal guide grooves (213).

4. The sample refrigeration device for laboratory use according to claim 3, characterized in that, A guide rod (250) is fixedly connected to one of the vertical inner walls of the horizontal guide groove (213) provided with a spring (230). One end of the guide rod (250) passes through the barrier plate (220) and the spring (230) in sequence and is fixedly connected to the other vertical inner wall of the horizontal guide groove (213).

5. The sample refrigeration device for laboratory use according to claim 4, characterized in that, The storage drawer (240) is rotatably connected to an adjustment handle (260) at one end facing away from the partition plate (220). The end of the adjustment handle (260) facing the partition plate (220) extends through the storage drawer (240). The end of the adjustment handle (260) facing the partition plate (220) is fixedly connected to a locking block (270) that engages with the adjacent horizontal guide groove (213).

6. The sample refrigeration device for laboratory use according to claim 5, characterized in that, The vertical cross-sectional shape of the adjustment handle (260) is T-shaped, and the horizontal cross-sectional shape of the locking block (270) is I-shaped.

7. The sample refrigeration device for laboratory use according to claim 1, characterized in that, A rubber sealing ring (280) is embedded in the end of the storage drawer (240) facing the independent storage room (110), and the rubber sealing ring (280) is in contact with the heat insulation box (210).

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