Large medical refrigerating box
By employing multiple centrifugal fans and a diffuser structure in large medical refrigerators, combined with a multi-directional air outlet design, the problems of uneven temperature and high energy consumption in large medical refrigerators have been solved. This has improved temperature uniformity and fluctuation, ensuring the preservation quality of medical supplies and reducing energy consumption.
Patent Information
- Application Number
- CN202423120733.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Large medical refrigerators cannot guarantee that the internal temperature meets the industry standard requirement of 2℃~8℃, and the temperature uniformity and fluctuation are poor, resulting in increased energy consumption.
The system employs multiple centrifugal fans and a diffuser cavity structure, combined with a multi-directional air outlet design, to ensure that the airflow is evenly and stably distributed within the refrigerator cavity. By setting up more than three centrifugal fans and a diffuser cavity, as well as designing air outlets in different directions, the airflow can be evenly, stably, and quickly delivered to all parts of the refrigerator.
Ensure that the temperature inside large medical cold storage boxes meets industry standards, improve temperature uniformity and fluctuation, reduce energy consumption, and improve the preservation quality of medical supplies.
Smart Images
Figure CN223663575U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of refrigeration equipment technology, specifically relating to a large medical refrigerator. Background Technology
[0002] Medical refrigerators are refrigeration devices specifically designed for use by medical institutions, biological research institutions, and pharmaceutical manufacturing and sales companies to preserve medical supplies such as drugs, vaccines, and important biological and chemical reagents. To ensure the quality of medical supplies, industry standards require that the internal temperature of a medical refrigerator should not exceed the range of 2℃ to 8℃.
[0003] Currently, many medical refrigerators use DC centrifugal fans in their air ducts because centrifugal fans are relatively thin, reducing the space occupied by the air duct and increasing the effective volume ratio of the medical refrigerator. Most medical refrigerators on the market use a single centrifugal fan or dual centrifugal fans. For small and medium-sized medical refrigerators with relatively small volumes, using a single or dual centrifugal fan can meet the internal temperature requirements. However, for large medical refrigerators, especially those with a volume of 1000L or more, the increased volume requires a larger air duct. Using a single or dual centrifugal fan makes it difficult to guarantee that the internal temperature meets industry standards, and it is also difficult to ensure good temperature uniformity and fluctuation in large medical refrigerators. This can lead to frequent compressor start-stop cycles and increased energy consumption. Utility Model Content
[0004] In view of the shortcomings of the related technologies, this utility model provides a large medical refrigerator to solve the technical problems mentioned in the background art.
[0005] This utility model provides a large medical refrigerator, comprising:
[0006] The cabinet has a front-opening refrigerated compartment;
[0007] An air duct assembly, which is connected to the rear wall of the refrigerator compartment, includes:
[0008] The upper and lower air duct baffles and air inlet plates are connected. The air duct baffles cover the upper section of the rear cavity wall, and the air inlet plates cover the middle and lower sections of the rear cavity wall. An air duct is formed between the air duct baffles, the air inlet plates and the rear cavity wall. An air inlet is provided at the lower part of the air inlet plates so that the air duct is connected to the refrigerator cavity. The upper and lower sides of the air duct baffles are respectively provided with upper baffles and lower baffles that fold towards the refrigerator cavity.
[0009] An air outlet plate is connected to an upper baffle and a lower baffle at its upper and lower ends, respectively. At least two baffle components are arranged between the upper and lower baffles to form at least three diffusion chambers in the left and right directions between the air outlet plate, the air duct baffle, and the left and right side walls of the refrigeration chamber. An air inlet is provided on the air duct baffle corresponding to each diffusion chamber so that each diffusion chamber is connected to the air duct. The upper part of the air outlet plate corresponding to each diffusion chamber is provided with a first air outlet, the lower part of the air outlet plate is provided with a second air outlet, and the lower baffle is provided with a third air outlet. A fourth air outlet is provided on the air outlet plate on the left and right sides of each baffle component. Each diffusion chamber is connected to the refrigeration chamber through the first air outlet, the second air outlet, the third air outlet, and the fourth air outlet.
[0010] The evaporator is sandwiched in the air duct between the air inlet plate and the rear cavity wall;
[0011] At least three centrifugal fans are installed in the diffusion chamber, one in each case, with the air inlet of each centrifugal fan facing the air outlet.
[0012] In some embodiments, gaps are left between the left and right sides of the air outlet plate and the left and right side walls of the refrigerator cavity, respectively, so that a fifth air outlet is formed between the air outlet plate and the left and right side walls of the refrigerator cavity.
[0013] In some embodiments, the air outlet panel includes at least three air outlet sub-panels spaced apart in the left-right direction, and the baffle assembly is located between two adjacent air outlet sub-panels; each baffle assembly includes two partitions arranged opposite each other in the left and right directions, the end of the partition away from the refrigerator cavity is attached to the air duct baffle, the upper and lower ends of the partition are attached to the upper baffle and the lower baffle respectively, and a cover plate is connected between the ends of the two partitions facing the refrigerator cavity, and gaps are left between the left and right sides of the cover plate and its adjacent air outlet sub-panel so that a fourth air outlet is formed between the cover plate and its adjacent air outlet sub-panel.
[0014] In some embodiments, each air outlet plate and cover plate has guide strips on both the left and right sides that fold towards the refrigeration chamber.
[0015] In some embodiments, the air duct baffle includes an upper and lower air guide plate and an air duct plate connected vertically, with the air duct plate protruding rearward relative to the air guide plate; air inlets are all opened on the air duct plate; an air duct is formed between the air duct plate, the air inlet plate and the rear cavity wall.
[0016] In some embodiments, the air duct assembly further includes a gate-shaped air duct frame, the front end of which is connected to the air intake plate and the air inlet plate, and the rear end of which is connected to the rear cavity wall, so that an air duct is formed between the air intake plate, the air inlet plate and the rear cavity wall.
[0017] In some embodiments, the upper baffle extends upward toward the refrigeration cavity, and the lower baffle extends downward toward the refrigeration cavity.
[0018] In some embodiments, the air inlet includes at least two rows of air inlet grilles, each row of air inlet grilles including a plurality of horizontally spaced air inlet holes, which are vertically elongated holes; the first air outlet includes at least one row of first air outlet grilles, each row of first air outlet grilles including a plurality of horizontally spaced first air outlet holes, which are horizontally elongated holes; the second air outlet includes multiple rows of second air outlet grilles, each row of second air outlet grilles including a plurality of horizontally spaced second air outlet holes, which are horizontally elongated holes; and the third air outlet includes a plurality of horizontally spaced third air outlet holes, which are vertically elongated holes.
[0019] In some embodiments, the refrigeration chamber is equipped with multiple shelves, and gaps are left between the air outlet and the shelves, and between the air inlet and the shelves. Two temperature measuring boxes are provided in the refrigeration chamber, one temperature measuring box is connected to the air outlet and the other temperature measuring box is connected to the air inlet. Both temperature measuring boxes are sandwiched in the gaps and are close to the middle of the refrigeration chamber in the left-right direction.
[0020] In some embodiments, the air intake panel includes two air intake sub-panels connected from the left and right.
[0021] Based on the above technical solution, the large medical refrigerator in this utility model embodiment can ensure that the internal temperature of the large medical refrigerator meets the industry standard requirements, and has good internal temperature uniformity and fluctuation, thereby ensuring the preservation quality of medical supplies inside the refrigerator and reducing energy consumption. Attached Figure Description
[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0023] Figure 1 This is a front view of the body and air duct assembly of the large medical refrigerator of this utility model;
[0024] Figure 2 A schematic diagram of the air duct assembly of the large medical refrigerator of this utility model;
[0025] Figure 3 Schematic diagram 2 of the air duct assembly of the large medical refrigerator of this utility model;
[0026] Figure 4 This is a structural schematic diagram of the air duct baffle and partition assembly (cover not shown) of the large medical refrigerator of this utility model;
[0027] Figure 5 This is a schematic diagram of the air outlet plate of the large medical refrigerator of this utility model;
[0028] Figure 6This is a vertical sectional view of the large medical refrigerator of this utility model at a centrifuge fan.
[0029] Figure 7 for Figure 6 Enlarged view of the structure at point A in the middle;
[0030] Figure 8 This is a cross-sectional view of the large medical refrigerator of this utility model at the centrifuge fan.
[0031] Figure 9 for Figure 8 Enlarged view of the structure at point B;
[0032] Figure 10 for Figure 8 Enlarged view of the structure at point C;
[0033] Figure 11 This is a schematic diagram showing the layout of temperature testing points inside a large medical refrigerated box.
[0034] In the diagram: 10. Cabinet; 101. Refrigeration chamber; 102. Air duct; 103. Diffusion chamber; 20. Air duct baffle; 21. Upper baffle; 22. Lower baffle; 23. Air guide plate; 24. Air intake plate; 201. Air intake port; 202. Third air outlet; 30. Air inlet plate; 31. Air inlet subplate; 301. Air inlet hole; 40. Air outlet plate; 41. Air outlet subplate; 42. Guide strip; 401. First air outlet; 402. Second air outlet; 403. Fourth air outlet; 404. Fifth air outlet; 50. Baffle assembly; 51. Baffle plate; 52. Cover plate; 501. Cable tray; 60. Air duct frame; 70. Evaporator; 80. Centrifugal fan; 90. Temperature measuring box. Detailed Implementation
[0035] The technical solutions in 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 a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0036] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "top", "bottom", "inner", "outer", "left", "right", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, that is, the orientation when the user is facing the medical refrigerator. 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.
[0037] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.
[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] refer to Figures 1-10 As shown, this utility model provides a large medical refrigerator, which includes a box body 10, a door (not shown), an air duct 102 assembly, an evaporator 70, and a centrifugal fan 80, etc. The box body 10 has a refrigerator cavity 101 with a front opening inside, and the door is connected to the front opening to open or close the refrigerator cavity 101. The air duct 102 assembly is located inside the box body 10 and is connected to the rear cavity wall of the refrigerator cavity 101.
[0040] The air duct 102 assembly includes an air inlet plate 30, an air duct baffle 20, and an air outlet plate 40, and is assembled using sheet metal. The air duct baffle 20 and the air inlet plate 30 are connected vertically; the air duct baffle 20 covers the upper section of the rear cavity wall of the refrigerator cavity 101, and the air inlet plate 30 covers the middle and lower section of the rear cavity wall of the refrigerator cavity 101, forming the air duct 102 between the air duct baffle 20, the air inlet plate 30, and the rear cavity wall. The lower part of the air inlet plate 30 is provided with an air inlet, which connects the air duct 102 to the refrigerator cavity 101. The upper and lower sides of the air duct baffle 20 are respectively provided with an upper baffle 21 and a lower baffle 22 that fold towards the refrigerator cavity 101, that is, the cross-section of the air duct baffle 20 is approximately U-shaped, and the front end of the air duct baffle 20 is an open end facing the refrigerator cavity 101.
[0041] An air outlet plate 40 is connected to the open end of the air duct baffle 20, and the upper and lower ends of the air outlet plate 40 are respectively connected to the upper baffle 21 and the lower baffle 22. At least two baffle components 50 are arranged at intervals between the upper baffle 21 and the lower baffle 22 along the left and right direction of the refrigeration cavity 101, so that at least three diffusion cavities 103 in the left and right direction are formed between the air outlet plate 40, the air duct baffle 20 and the left and right side walls of the refrigeration cavity 101. An air inlet 201 is opened on the rear wall of the air duct baffle 20 corresponding to each diffusion cavity 103, and each diffusion cavity 103 is connected to the air duct 102 through the air inlet 201. Each diffuser 103 has a first air outlet at the top of the air outlet plate 40, a second air outlet at the bottom of the air outlet plate 40, and a third air outlet on the lower baffle 22. The air outlet plate 40 has a fourth air outlet 403 on both the left and right sides of each partition assembly 50. Each diffuser 103 is connected to the refrigeration chamber 101 through the first air outlet, the second air outlet, the third air outlet, and the fourth air outlet 403.
[0042] The evaporator 70 is sandwiched within the air duct 102 between the air inlet plate 30 and the rear cavity wall; the evaporator 70 is flat and adapted to the shape of the air duct 102. There are at least three centrifugal fans 80, equal to the number of diffuser chambers 103; each centrifugal fan 80 is correspondingly positioned within the diffuser chamber 103, with its inlet facing the air outlet 201. It can be understood that the centrifugal fan 80 has a flat, spiral structure, with its inlet in the axial direction and its outlet in the radial direction. Therefore, the inlet direction of the centrifugal fan 80 is perpendicular to the outlet plate 40, and its outlet direction is parallel to the outlet plate 40. Furthermore, the outlet direction of the centrifugal fan 80 is perpendicular to the inlet direction at the air inlet. The arrangement of the centrifugal fans 80 changes the direction of the incoming airflow and achieves 360-degree omnidirectional airflow.
[0043] In this embodiment, the air-cooled circulation mode is as follows: the high-temperature air in the refrigeration chamber 101 is drawn into the air duct 102 through the air inlet at the lower part of the air inlet plate 30 under the action of all centrifugal fans 80. It first flows through the evaporator 70 for heat exchange and cooling. The cooled airflow enters each diffuser chamber 103 through each air outlet 201 and each centrifugal fan 80 and flows and buffers in the diffuser chamber 103. Then, it enters the refrigeration chamber 101 through the first air outlet at the upper part of the air outlet plate 40, the second air outlet at the lower part of the air outlet plate 40, the third air outlet on the lower baffle 22 of the air duct baffle 20, and the fourth air outlet 403 on the left and right sides of the baffle assembly 50, so that air can be discharged from each air outlet in different directions at the same time.
[0044] The above illustrative embodiment, by employing three or more centrifugal fans 80 and a diffuser cavity 103, as well as air outlets in different directions, enables airflow to be uniformly, stably, and rapidly delivered to all parts of the refrigeration chamber 101 of the large medical refrigerator. This makes the airflow distribution within the entire refrigerator more stable and uniform, ensuring that the internal temperature of the large medical refrigerator meets the industry standard requirement of 2℃~8℃, and effectively improving the temperature fluctuation and uniformity within the refrigerator. This, in turn, ensures the preservation quality of medical supplies within the refrigerator, reduces the number of compressor start-ups and shutdowns, and lowers energy consumption.
[0045] refer to Figure 8 , Figure 10 As shown, in some embodiments, gaps are left between the left and right sides of the air outlet plate 40 and the left and right side walls of the refrigeration chamber 101, respectively, so that the air outlet plate 40 and the left and right side walls of the refrigeration chamber 101 respectively form a fifth air outlet 404; the two outermost diffusion chambers 103 are also connected to the refrigeration chamber 101 through the fifth air outlet 404; by setting the fifth air outlet 404, the temperature fluctuation and uniformity inside the large medical refrigeration box are further improved, and the refrigeration effect is enhanced.
[0046] refer to Figure 1-4 , Figure 8 , Figure 9 As shown, in some embodiments, the air outlet plate 40 includes at least three air outlet sub-plates 41 arranged at intervals along the left and right direction, and the baffle assembly 50 is located between two adjacent air outlet sub-plates 41, that is, the number of air outlet sub-plates 41 is equal to the number of diffuser cavities 103, and the air outlet sub-plates 41 correspond one-to-one with the diffuser cavities 103. Each baffle assembly 50 includes two baffles 51 arranged opposite each other on the left and right. The end of the baffle 51 facing away from the refrigeration chamber 101 is attached to the air duct baffle 20. The upper and lower ends of the baffle 51 are attached to the upper baffle 21 and the lower baffle 22, respectively. A cover plate 52 is connected between the ends of the two baffles 51 facing the refrigeration chamber 101. The surface of the cover plate 52 is flush with the surface of the air outlet plate 41. Specifically, each baffle 51 next to each diffusion chamber 103 is provided with a wiring hole, and the air duct baffle 20 located between two diffusion chambers 103 is provided with a wiring outlet. This makes the internal space of the baffle assembly 50 form a wiring groove 501. The cable of the centrifugal fan 80 can pass through the wiring hole into the wiring groove 501 and then be led out of the air duct assembly through the wiring outlet. The wiring hole is sealed to prevent the airflow in the diffusion chamber 103 from leaking through it. Furthermore, gaps are left between the left and right sides of the cover plate 52 of each partition component 50 and its adjacent air outlet sub-plate 41, so that a fourth air outlet 403 is formed between the cover plate 52 and its adjacent air outlet sub-plate 41. Thus, by setting the air outlet plate 40 separately, the processing and installation difficulty of the air outlet plate 40 of the large medical refrigerator is reduced, and it is easier to ensure the processing quality and structural strength of the air outlet plate 40, and it is also easier to set the fourth air outlet 403.
[0047] refer to Figures 7-9As shown, in some embodiments, each air outlet plate 41 and cover plate 52 is provided with guide strips 42 that fold towards the refrigeration chamber 101 on both the left and right sides; the guide strips 42 and the air outlet plate 41 are arranged in an L-shape, and the guide strips 42 and the cover plate 52 are arranged in an L-shape; by setting the guide strips 42, the cold air flowing out through the fourth air outlet 403 and the fifth air outlet 404 is guided to blow further, further improving the temperature fluctuation and uniformity inside the chamber.
[0048] refer to Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, in some embodiments, the air duct baffle 20 includes an air guide plate 23 and an air duct 24 connected vertically to each other, with the air duct 24 protruding rearward relative to the air guide plate 23; thus, the thickness of the diffuser cavity 103 at the air guide plate 23 is less than its thickness at the air duct 24. Air inlets 201 are all opened on the air duct 24, thus the centrifugal fan 80 is located in the lower half of the diffuser cavity 103; the air guide plate 23 guides the airflow within the diffuser cavity 103 towards the first air outlet. An air duct 102 is formed between the air duct 24, the air inlet plate 30, and the rear wall of the refrigeration cavity 101; that is, the area between the air guide plate 23 and the rear wall of the refrigeration cavity 101 is a non-air duct area. This reduces the height of the top of the air duct 102, minimizing waste of the portion of the air duct 102 above the centrifugal fan 80, allowing the airflow within the air duct 102 to fully and quickly enter the centrifugal fan 80 through the air duct inlets 201, improving airflow circulation efficiency. In addition, the outlet of each cable tray 501 is located on the air guide plate 23, and the cable of the centrifugal fan 80 is led to the non-air duct area through the outlet.
[0049] refer to Figure 3 , Figure 10 As shown, in some embodiments, the air duct 102 assembly further includes a U-shaped air duct frame 60, which includes a top frame and two side frames. The entire front end face of the air duct frame 60 is fitted and connected to the air intake plate 24 and the air inlet plate 30, and the entire rear end face is fitted and connected to the rear cavity wall of the refrigeration chamber 101. The top frame is connected to the air intake plate 24 and is located above the air intake port 201. Through the arrangement of the air duct frame 60, an air duct 102 is formed between the air intake plate 24, the air inlet plate 30 and the rear cavity wall of the refrigeration chamber 101, that is, the air duct 102 area is defined between the air duct 102 assembly and the rear cavity wall.
[0050] refer to Figure 2 , Figure 4 , Figure 7As shown, in some embodiments, the upper baffle 21 is connected to the upper side of the air guide plate 23 and extends upward towards the refrigeration cavity 101 to guide the airflow towards the first air outlet in the diffusion cavity 103, reduce turbulence at the corner of the upper baffle 21, and avoid local accumulation of cold energy leading to waste. The lower baffle 22 is connected to the lower side of the air guide plate 24 and extends downward towards the refrigeration cavity 101 to guide the airflow towards the second and third air outlets in the diffusion cavity 103, reduce turbulence at the corner of the lower baffle 22, and avoid local accumulation of cold energy leading to waste.
[0051] refer to Figures 1-10 As shown, in some embodiments, the air inlet includes at least two rows of air inlet grilles, each row of air inlet grilles including a plurality of horizontally spaced air inlet holes 301, which are vertically elongated holes; the vertically elongated air inlet holes 301 have advantages such as low air resistance and aesthetics. The first air outlet includes at least one row of first air outlet grilles, each row of first air outlet grilles including a plurality of horizontally spaced first air outlet holes 401, which are horizontally elongated holes; the second air outlet includes multiple rows of second air outlet grilles, each row of second air outlet grilles including a plurality of horizontally spaced second air outlet holes 402, which are horizontally elongated holes; the horizontally elongated air outlet holes facilitate stable airflow and cover a wider area of the refrigeration chamber 101. The third air outlet includes a plurality of horizontally spaced third air outlet holes 202, which are vertically elongated holes. This illustrative embodiment refines the structural arrangement of the air inlet and each air outlet.
[0052] refer to Figure 1 As shown, in some embodiments, the refrigeration chamber 101 is equipped with multiple shelves (not shown), and gaps are left between the air outlet plate 40 and the shelves, and between the air inlet plate 30 and the shelves. Two temperature measuring boxes 90 are provided inside the refrigeration chamber 101; one temperature measuring box 90 is connected to the air outlet plate 40 and located within the height range between the first air outlet and the centrifugal fan 80; the other temperature measuring box 90 is connected to the air inlet plate 30 and located above the first air outlet; both temperature measuring boxes 90 are sandwiched within the gaps and are close to the center of the refrigeration chamber 101 in the left-right direction, which does not affect the storage space of medical supplies inside the box while better monitoring the internal temperature of the large medical refrigeration box during actual use.
[0053] refer to Figures 1-3 As shown, in some embodiments, the air inlet plate 30 includes two air inlet sub-plates 31 connected from left to right, and the two air inlet sub-plates 31 can be connected by fasteners; the fasteners and the joints between the two air inlet sub-plates 31 are all located within the air duct 102 to avoid encroaching on the space of the refrigeration chamber 101. Thus, by using a split design for the air inlet plate 30, the processing and installation difficulty of the air inlet plate 30 for large medical refrigerators is reduced, and the processing quality and structural strength of the air inlet plate 30 are more easily guaranteed.
[0054] To illustrate the technical effectiveness of this large medical refrigerator, an internal temperature test was conducted on a 1000L large medical refrigerator equipped with three 80°C centrifugal fans. The internal temperature testing points were arranged according to industry standard YYT0086-2020 (e.g., Figure 11 As shown in the table below, the temperature test results at each test point, the calculated results of temperature fluctuation and uniformity inside the chamber (in °C) are as follows.
[0055]
[0056]
[0057] It should be noted that in the table above, the calculation method for the temperature fluctuation inside the chamber is as follows: calculate the difference between the maximum and minimum instantaneous temperatures at each test point within the chamber during the test period, and the largest difference among all test points is the temperature fluctuation inside the chamber; the calculation method for the temperature uniformity inside the chamber is as follows: calculate the integral average temperature at each test point within the chamber during the test period, the difference between the maximum integral average temperature at all test points and the temperature setpoint (5℃) is the upper deviation value, the difference between the minimum integral average temperature at all test points and the temperature setpoint (5℃) is the lower deviation value, and the difference between the upper deviation value and the lower deviation value is the temperature uniformity inside the chamber. As shown in the table above, the maximum instantaneous temperature at each test point of this utility model is 6.9℃, and the minimum instantaneous temperature is 3.2℃, fully meeting the industry standard requirement of a temperature range of 2℃~8℃; the maximum temperature fluctuation inside the chamber is 2.0℃, and the uniformity is 2.7 (+1.6, -1.1)℃, indicating good performance in both temperature uniformity and fluctuation.
[0058] In summary, the large medical refrigerator of this invention, by using three or more centrifugal fans 80, solves the problem that traditional single or dual fans cannot meet the temperature requirements inside the large medical refrigerator, thus improving the stability of air supply. Furthermore, the arrangement of the first air outlet at the top of the air outlet plate 40, the second air outlet at the bottom of the air outlet plate 40, the third air outlet on the lower baffle 22, the fourth air outlet 403 in the middle of the air outlet plate 40, and the fifth air outlets 404 on both sides of the air outlet plate 40 ensures that the airflow can be uniformly, stably, and quickly delivered to all parts of the refrigerator cavity 101 of the large medical refrigerator, ensuring that the temperature inside the refrigerator meets industry standard requirements and has good temperature fluctuation and uniformity. This, in turn, ensures the preservation quality of medical supplies inside the refrigerator, reduces the number of compressor start-stop cycles, and lowers energy consumption.
[0059] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0060] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A large medical refrigerator, characterized in that, include: The cabinet has a front-opening refrigerated compartment; An air duct assembly, connected to the rear wall of the refrigeration chamber, the air duct assembly comprising: An air duct baffle and an air inlet plate are connected vertically. The air duct baffle covers the upper section of the rear cavity wall, and the air inlet plate covers the middle and lower section of the rear cavity wall. An air duct is formed between the air duct baffle, the air inlet plate and the rear cavity wall. An air inlet is provided at the lower part of the air inlet plate so that the air duct is connected to the refrigeration cavity. An upper baffle and a lower baffle that fold towards the refrigeration cavity are respectively provided on the upper and lower sides of the air duct baffle. An air outlet plate is connected to the upper baffle and the lower baffle respectively at its upper and lower ends. At least two baffle components are arranged between the upper baffle and the lower baffle to form at least three diffusion chambers in the left and right directions between the air outlet plate, the air duct baffle and the left and right side walls of the refrigeration chamber. An air inlet is provided on the air duct baffle corresponding to each diffusion chamber so that each diffusion chamber is connected to the air duct. The upper part of the air outlet plate corresponding to each diffusion chamber is provided with a first air outlet, the lower part of the air outlet plate is provided with a second air outlet, and the lower baffle is provided with a third air outlet. A fourth air outlet is provided on the air outlet plate on the left and right sides of each baffle component. Each diffusion chamber is connected to the refrigeration chamber through the first air outlet, the second air outlet, the third air outlet and the fourth air outlet. An evaporator is sandwiched within an air duct between the air inlet plate and the rear cavity wall; At least three centrifugal fans are arranged one-to-one in the diffusion chamber, with the air inlet of each centrifugal fan facing the air outlet.
2. The large medical refrigerator according to claim 1, characterized in that, The left and right sides of the air outlet plate are respectively left with gaps between them and the left and right side walls of the refrigeration chamber, so that the air outlet plate and the left and right side walls of the refrigeration chamber respectively form a fifth air outlet.
3. The large medical refrigerator according to claim 2, characterized in that, The air outlet panel includes at least three air outlet sub-panels spaced apart in the left-right direction. The baffle assembly is located between two adjacent air outlet sub-panels. Each baffle assembly includes two partitions arranged opposite each other in the left and right directions. The end of the partition facing away from the refrigerator cavity is attached to the air duct baffle. The upper and lower ends of the partition are respectively attached to the upper baffle and the lower baffle. A cover plate is connected between the ends of the two partitions facing the refrigerator cavity. There are gaps between the left and right sides of the cover plate and its adjacent air outlet sub-panel so that the cover plate and its adjacent air outlet sub-panel form the fourth air outlet.
4. The large medical refrigerator according to claim 3, characterized in that, Each of the aforementioned air outlet plates and cover plates has guide strips on both the left and right sides that fold towards the refrigeration chamber.
5. The large medical refrigerator according to claim 1, characterized in that, The air duct baffle includes an air guide plate and an air duct plate connected vertically, with the air duct plate protruding rearward relative to the air guide plate; the air inlets are all opened on the air duct plate; an air duct is formed between the air duct plate, the air inlet plate and the rear cavity wall.
6. The large medical refrigerator according to claim 5, characterized in that, The air duct assembly also includes a U-shaped air duct frame, the front end of which is connected to the air guide plate and the air inlet plate, and the rear end of which is connected to the rear cavity wall, so that an air duct is formed between the air guide plate, the air inlet plate and the rear cavity wall.
7. The large medical refrigerator according to claim 1 or 5, characterized in that, The upper baffle extends upward toward the refrigeration chamber; the lower baffle extends downward toward the refrigeration chamber.
8. The large medical refrigerator according to claim 1, characterized in that, The air inlet includes at least two rows of air inlet grilles, each row of which includes a plurality of horizontally spaced air inlet holes, which are vertically elongated holes; the first air outlet includes at least one row of first air outlet grilles, each row of which includes a plurality of horizontally spaced first air outlet holes, which are horizontally elongated holes; the second air outlet includes multiple rows of second air outlet grilles, each row of which includes a plurality of horizontally spaced second air outlet holes, which are horizontally elongated holes; the third air outlet includes a plurality of horizontally spaced third air outlet holes, which are vertically elongated holes.
9. The large medical refrigerator according to claim 1, characterized in that, The refrigeration chamber is equipped with multiple shelves, and gaps are left between the air outlet plate and the shelves, and between the air inlet plate and the shelves. The refrigeration chamber is equipped with two temperature measuring boxes, one of which is connected to the air outlet plate and the other is connected to the air inlet plate. Both temperature measuring boxes are sandwiched in the gaps and are close to the middle of the refrigeration chamber in the left-right direction.
10. The large medical refrigerator according to claim 1, characterized in that, The air intake plate includes two air intake sub-plates connected on the left and right sides.