Refrigeration reagent bin

Abstract

The refrigeration reagent bin comprises a first heat exchanger and a second heat exchanger which are arranged in parallel, the first heat exchanger comprises a side wall cooling liquid input pipe and a side wall cooling liquid output pipe which are arranged along the side wall of the reagent bin, and a plurality of arc-shaped pipes are arranged between the side wall cooling liquid input pipe and the side wall cooling liquid output pipe. The arc-shaped pipes are attached to the side wall of the reagent bin and are arranged in parallel from top to bottom along the side wall of the reagent bin; the second heat exchanger comprises a spiral pipe arranged on a bottom plate of the reagent bin, and the two ends of the spiral pipe are connected with a bottom plate cooling liquid input pipe and a bottom plate cooling liquid output pipe respectively. The utility model has the advantages of ingenious structure, low cost, easy manufacture and installation and lower later maintenance cost, the flow channels of the side wall and the bottom plate of the bin body adopt the parallel design, and the annular shape of the side wall also adopts the parallel structure, so that the temperature difference of cooling liquid can be reduced, and the refrigeration speed and the heat exchange efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of in vitro diagnostic equipment technology, and in particular to a refrigerated reagent chamber. Background Technology

[0002] In in vitro diagnostic instruments, reagent compartments typically have a cooling function to ensure reagent reliability. Current cooling methods are mostly of two types: one is to attach the Peltier cooling end to the reagent compartment wall to deliver cooling; the other is to use a low-temperature coolant circulating around the reagent compartment to provide cooling. The former has low cooling efficiency and requires disassembly for maintenance, resulting in high maintenance costs; the latter places the circulation channel inside the compartment, such as the novel biochemical analyzer cooling device described in ZL202122463062.4, whose reagent compartment sidewalls and bottom plate use a cavity structure with baffles, allowing the low-temperature coolant to circulate along a specific channel. However, the aforementioned coolant has high flow resistance, low flow velocity, low heat exchange efficiency, uneven temperature inside the compartment, and the reagent compartment is difficult to process, resulting in high manufacturing costs. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a refrigeration reagent chamber with good cooling effect and easy processing, specifically adopting the following technical solution:

[0004] The refrigerated reagent compartment of this utility model includes a first heat exchanger and a second heat exchanger arranged in parallel. The first heat exchanger includes a sidewall coolant inlet pipe and a sidewall coolant outlet pipe arranged along the sidewall of the reagent compartment. A plurality of arc-shaped pipes are arranged between the sidewall coolant inlet pipe and the sidewall coolant outlet pipe. The arc-shaped pipes are attached to the sidewall of the reagent compartment and arranged in parallel from top to bottom along the sidewall of the reagent compartment. The second heat exchanger includes a spiral tube arranged on the bottom plate of the reagent compartment. The two ends of the spiral tube are respectively connected to the bottom plate coolant inlet pipe and the bottom plate coolant outlet pipe.

[0005] Preferably, the sidewall coolant inlet pipe and the sidewall coolant outlet pipe are arranged vertically side by side along the sidewall of the reagent compartment, and the arc-shaped pipes are evenly spaced from top to bottom or arranged with denser pipes at the top and sparser pipes at the bottom.

[0006] Preferably, the central end of the spiral tube is connected to the coolant inlet pipe of the base plate, and the outer end of the spiral tube is connected to the coolant outlet pipe of the base plate.

[0007] Preferably, the sidewall coolant inlet pipe, sidewall coolant outlet pipe, arc-shaped pipe, and spiral pipe are all D-shaped pipes that are closely fitted to the reagent compartment.

[0008] Preferably, the sidewall coolant inlet pipe, sidewall coolant outlet pipe, arc-shaped pipe, and spiral pipe are all connected to the reagent compartment by means of snap-fit, crimping, or bonding.

[0009] Preferably, the first heat exchanger and the second heat exchanger are located inside or outside the reagent chamber.

[0010] Preferably, a heat insulation layer is provided on the outside of the reagent compartment. When the first heat exchanger and the second heat exchanger are located inside the reagent compartment, the heat insulation layer is located on the outer surface of the reagent compartment; when the first heat exchanger and the second heat exchanger are located outside the reagent compartment, the heat insulation layer is located on the outside of the first heat exchanger and the second heat exchanger.

[0011] Preferably, both the sidewall coolant inlet pipe and the bottom plate coolant inlet pipe are connected to the coolant outlet of the refrigeration device, and both the sidewall coolant outlet pipe and the bottom plate coolant outlet pipe are connected to the coolant inlet of the refrigeration device.

[0012] The refrigerated reagent chamber provided by this utility model has an ingenious structure, low cost, is easy to manufacture and install, and has low maintenance costs. The flow channels on the side walls and bottom plate of the chamber adopt a parallel design, and the annular structure of the side walls also adopts a parallel structure. This reduces the temperature difference of the coolant in different parts and improves the temperature uniformity in the reagent chamber. The above-mentioned parallel flow channel setting shortens the fluid path, reduces fluid resistance, improves the cooling speed and heat exchange efficiency, ensures the quality of reagents, and improves the accuracy of the test results of in vitro diagnostic instruments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 Cross-sectional view.

[0015] Figure 3 yes Figure 1 A bottom view. Detailed Implementation

[0016] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific working processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0017] like Figures 1-3 As shown, the refrigerated reagent compartment of this utility model is a reagent compartment equipped with a first heat exchanger and a second heat exchanger. The reagent compartment includes a compartment body and a compartment cover 11. The compartment body is composed of side walls 12 and a bottom plate 13. The first heat exchanger and the second heat exchanger are arranged in parallel, with the first heat exchanger mounted on the side wall 12 and the second heat exchanger mounted on the bottom plate 13.

[0018] Specifically, the first heat exchanger includes a sidewall coolant inlet pipe 21 and a sidewall coolant outlet pipe 22 arranged vertically along the sidewall 12 of the reagent compartment (the two are spaced apart, and a barcode scanner or similar device can be installed in the gap). Multiple arc-shaped pipes 23 connect the sidewall coolant inlet pipe 21 and the sidewall coolant outlet pipe 22. These arc-shaped pipes 23 are attached to the sidewall 12 of the reagent compartment and arranged in parallel from top to bottom along the sidewall 12. Because the single-pass flow path of the first heat exchanger is relatively short, the flow resistance loss of the coolant can be reduced, thus improving the heat exchange effect of the sidewall 12 of the reagent compartment. The aforementioned sidewall coolant inlet pipe 21, sidewall coolant outlet pipe 22, and arc-shaped pipe 23 all employ D-shaped pipes (or lower-cost round pipes) that are attached to the reagent compartment sidewall 12. They are connected to the reagent compartment sidewall 12 via snap-fit, crimping, or aluminum foil tape bonding. Because the D-shaped pipe has a larger contact area with the reagent compartment, it increases heat exchange capacity and ensures optimal heat exchange performance. Furthermore, the tighter fit between the D-shaped pipe and the reagent compartment reduces the residue of surrounding non-condensable gases, decreasing thermal resistance and further improving the heat exchanger's efficiency. The aforementioned arc-shaped pipes 23 can be evenly spaced from top to bottom or spaced more densely at the top and less densely at the bottom to mitigate the phenomenon of higher temperatures at the top caused by descending cold air, further improving the uniformity of the temperature inside the compartment.

[0019] The second heat exchanger includes a spiral tube 31 mounted on the reagent compartment bottom plate 13, which is connected to the bottom plate 13 by snap-fit, crimping, or aluminum foil tape bonding. The spiral tube 31 also uses a D-shaped tube, which has a large contact area with the reagent compartment, improving heat exchange efficiency and ensuring optimal heat transfer. The central end of the spiral tube 31 is connected to the bottom plate coolant inlet pipe 32, and the outer end of the spiral tube 31 is connected to the bottom plate coolant outlet pipe 33. Therefore, the cooling capacity of the coolant can diffuse from the center of the bottom plate 13 outwards, combining with the outward diffusion of cooling capacity from the first heat exchanger, resulting in an overall improvement in the temperature uniformity within the reagent compartment.

[0020] The aforementioned side wall coolant inlet pipe 21 and bottom plate coolant inlet pipe 32 are connected in parallel to the coolant output end of the refrigeration unit via a tee connector, and the side wall coolant output pipe 22 and bottom plate coolant output pipe 33 are connected in parallel to the coolant inlet end of the refrigeration unit via a tee connector.

[0021] The first and second heat exchangers, after being processed separately, are installed on the side wall 12 and bottom plate 13 of the reagent compartment, respectively. This reduces the structural complexity of the reagent compartment, lowers processing difficulty, and saves manufacturing costs. In actual production, the first and second heat exchangers can be installed on the inside or outside of the reagent compartment, depending on the specific situation. Furthermore, to improve the insulation effect of the compartment, a heat insulation protective layer is provided on the outside of the reagent compartment. Specifically, when the first and second heat exchangers are located on the inside of the reagent compartment, the heat insulation protective layer is located on the outer surface of the reagent compartment; when the first and second heat exchangers are located on the outside of the reagent compartment, the heat insulation protective layer is located on the outside of the first and second heat exchangers.

[0022] During operation, the refrigeration unit is activated, allowing its coolant to enter the first and second heat exchangers. This coolant then exchanges heat with the substances inside the reagent compartment at the side wall 12 and bottom plate 13, absorbing heat and thus cooling the compartment. Specifically, the coolant in the first heat exchanger enters the arc-shaped pipe 23 through the side wall coolant inlet pipe 21, flows along the annular flow channel around the side wall of the reagent compartment, and after sufficient heat exchange, collects at the side wall coolant outlet pipe 22 before flowing out. It then enters the refrigeration unit for further cooling and recirculation. The coolant in the second heat exchanger is first transported to the center of the bottom plate through the bottom plate coolant inlet pipe 32, then gradually expands outward along the spiral flow channel. During this flow, it absorbs heat from the vicinity of the bottom plate and flows out through the bottom plate coolant outlet pipe 33, entering the refrigeration unit for further cooling and recirculation. The cooling capacity of the first heat exchanger is transferred from the side wall to the center of the reagent compartment, while the cooling capacity of the second heat exchanger is transferred from the center outward, improving the temperature uniformity throughout the reagent compartment.

[0023] Compared with the prior art, the refrigeration reagent chamber of this utility model has the following advantages:

[0024] 1. The separate design of the heat exchanger and reagent compartment simplifies the reagent compartment structure, makes it easier to process, and reduces overall costs;

[0025] 2. The parallel design of the coolant flow channels increases the coolant flow rate under the same operating conditions, thereby improving the heat exchange effect;

[0026] 3. The parallel design of the coolant flow channels ensures good temperature uniformity throughout the coolant, thereby improving the temperature uniformity of the entire reagent chamber;

[0027] 4. The cooling energy of the first heat exchanger diffuses from the outside to the inside, while the cooling energy of the second heat exchanger diffuses from the center to the surrounding area, which is conducive to a uniform increase in the overall temperature of the reagent chamber.

[0028] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A refrigerated reagent chamber, characterized in that: The device includes a first heat exchanger and a second heat exchanger arranged in parallel. The first heat exchanger includes a sidewall coolant inlet pipe and a sidewall coolant outlet pipe arranged along the sidewall of the reagent compartment. Multiple arc-shaped pipes are arranged between the sidewall coolant inlet pipe and the sidewall coolant outlet pipe. The arc-shaped pipes are attached to the sidewall of the reagent compartment and arranged in parallel from top to bottom along the sidewall of the reagent compartment. The second heat exchanger includes a spiral tube arranged on the bottom plate of the reagent compartment. The two ends of the spiral tube are respectively connected to the bottom plate coolant inlet pipe and the bottom plate coolant outlet pipe.

2. The refrigerated reagent chamber according to claim 1, characterized in that: The sidewall coolant inlet pipe and the sidewall coolant outlet pipe are arranged vertically side by side along the sidewall of the reagent compartment, and the arc-shaped pipes are evenly spaced from top to bottom or arranged with denser pipes at the top and sparser pipes at the bottom.

3. The refrigerated reagent chamber according to claim 1, characterized in that: The center end of the spiral tube is connected to the coolant inlet pipe of the base plate, and the outer end of the spiral tube is connected to the coolant outlet pipe of the base plate.

4. The refrigerated reagent chamber according to claim 1, characterized in that: The sidewall coolant inlet pipe, sidewall coolant outlet pipe, arc-shaped pipe, and spiral pipe all adopt D-shaped pipes that are closely attached to the reagent compartment.

5. The refrigerated reagent chamber according to claim 1, characterized in that: The sidewall coolant inlet pipe, sidewall coolant outlet pipe, arc pipe, and spiral pipe are all connected to the reagent compartment by means of snap-fit, crimping, or bonding.

6. The refrigerated reagent chamber according to claim 1, characterized in that: The first heat exchanger and the second heat exchanger are located inside or outside the reagent chamber.

7. The refrigerated reagent chamber according to claim 1, characterized in that: The reagent compartment is provided with a heat insulation layer on the outside. When the first heat exchanger and the second heat exchanger are located inside the reagent compartment, the heat insulation layer is located on the outer surface of the reagent compartment; when the first heat exchanger and the second heat exchanger are located outside the reagent compartment, the heat insulation layer is located on the outside of the first heat exchanger and the second heat exchanger.

8. The refrigeration reagent chamber according to claim 1, characterized in that: The side wall coolant inlet pipe and the bottom plate coolant inlet pipe are both connected to the coolant outlet of the refrigeration unit, and the side wall coolant outlet pipe and the bottom plate coolant outlet pipe are both connected to the coolant inlet of the refrigeration unit.

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