A food freezer

Abstract

This invention discloses a food freezer, belonging to the technical field of freezing equipment. The invention includes a freezer body, comprising a cabinet and a door hinged to the cabinet body. A cooling fan is inclinedly mounted on the top of the cabinet body, and multiple shelves are provided inside the cabinet. A circulation component is also provided inside the cabinet. The circulation component includes a first air guide, a second air guide, and a third air guide. The first air guide directs a portion of the air from the cooling fan to the bottom of the cabinet body. The second air guide allows air from the bottom of the cabinet to reach the cooling fan and be cooled by it. The third air guide is located on the bottom surface of the cabinet body and directs air from the bottom of the cabinet to the second air guide. By incorporating the first air guide, this invention directs a portion of the air from the cooling fan to the bottom of the cabinet, directly solving the problem of insufficient cooling of food at the bottom when there is an excessive amount of food piled up inside the freezer.

Description

Technical Field

[0001] This invention relates to the field of freezing equipment technology, and more specifically to a food freezer. Background Technology

[0002] The most common type of commercial freezer is the double-door upright freezer, which can reach temperatures as low as -18°C. The interior of these freezers typically features multiple shelves for food storage and a fan at the top for internal cold air circulation, ensuring even temperature distribution. However, when a large amount of food is piled up, it can obstruct cold air circulation. Furthermore, the frequent opening and closing of the door in commercial freezers can affect freezing efficiency. Both of these factors contribute to uneven temperature distribution within the freezer, which can easily cause spoilage, especially for raw meat sausages with natural casings, affecting their edibility. Summary of the Invention

[0003] To address the aforementioned shortcomings, the present invention provides a food freezer that can maintain a uniform internal temperature and prevent food spoilage.

[0004] This invention protects a food freezer, including a freezer body, the freezer body including a cabinet and a cabinet door hinged to the cabinet, a cooling fan is inclinedly provided at the top of the cabinet body, a plurality of shelves are provided in the cabinet body, and further, a circulation component is provided in the cabinet body;

[0005] The circulation component includes a first flow guide, a second flow guide, and a third flow guide;

[0006] The first air guide can guide a portion of the air at the location of the air conditioner fan to the bottom of the cabinet;

[0007] The second air guide allows air from the bottom of the cabinet to reach the air conditioning fan and be cooled by the air conditioning fan.

[0008] The third air guide is disposed on the bottom surface of the cabinet, and the third air guide can guide the air at the bottom of the cabinet to the second air guide.

[0009] Furthermore, the circulation component includes a plurality of first air ducts, wherein the first air guide is the first air duct;

[0010] The first air duct is disposed inside the side wall of the cabinet, with the bottom end of the first air duct protruding from the side wall of the cabinet and close to the bottom surface of the cabinet; the top end of the first air duct protrudes from the side wall of the cabinet and close to the top surface of the cabinet.

[0011] Furthermore, the air conditioning fan includes a housing, on which fan blades are provided;

[0012] The side wall of the outer casing is connected to the top of the first air duct, so that some of the air inside the outer casing can be guided to the bottom of the cabinet through the first air duct.

[0013] Furthermore, the first air duct is formed by sequentially connecting multiple circular pipes with progressively smaller diameters from top to bottom;

[0014] The side wall of the first air duct is vertically provided with a plurality of second air ducts, and the second air ducts are located near the diameter change position of the first air duct;

[0015] The second air duct can draw air from the middle of the cabinet into the interior of the first air duct, thereby achieving air circulation.

[0016] Furthermore, the air inlet end of the second air duct is provided with a striking element, which can drive the striking element to strike the shelf and vibrate when air passes through the striking element.

[0017] Furthermore, the striking element includes a fixed frame disposed inside the second air duct, a rotating shaft rotatably disposed on the fixed frame, blades disposed on the side wall of the rotating shaft, and the protruding end of the rotating shaft being connected to the striking block via a rotating rod. The rotation of the rotating shaft can drive the striking block to strike the shelf.

[0018] Furthermore, the rotating rod is perpendicular to the rotating shaft, one end of the rotating rod is hinged to the striking block, and the striking block can deflect towards the rotating shaft;

[0019] The striking block is teardrop-shaped and made of a flexible material.

[0020] Furthermore, the second air guide is a return air duct, which is disposed inside the back wall of the cabinet. The air outlet of the return air duct is disposed on the back side of the air conditioner fan, and the air inlet of the return air duct is close to the bottom of the cabinet.

[0021] The third air guide is an arc-shaped plate, with the side of the arc-shaped plate near the cabinet door curving upwards to guide the bottom air to the air inlet.

[0022] Furthermore, the cabinet is provided with an extension member, which is located above the cabinet door. The extension member is linked with the cabinet door. When the cabinet door is opened, the extension member extends out, and when the cabinet door is closed, the extension member enters the cabinet and approaches the air conditioning fan.

[0023] When the extension extends, it can reduce the temperature of the outside air and prevent hot outside air from entering the interior of the cabinet.

[0024] Furthermore, the protruding member includes a plate body, the plate body having several vertical through holes, and a cooling block being provided inside the through holes;

[0025] When the plate extends, the air above the plate can flow downward through the through hole.

[0026] Furthermore, the through hole is formed by a vertical combination of an upper through hole and a lower through hole, wherein the diameter of the upper through hole is larger than the diameter of the lower through hole.

[0027] Furthermore, the cabinet is provided with a receiving cavity for accommodating the panel;

[0028] The bottom surface of the panel is provided with a sliding groove, which is close to the cabinet door;

[0029] The top of the cabinet door is provided with a vertical protruding rod, and the top of the protruding rod is inserted into the slide groove.

[0030] Beneficial effects: By incorporating a first airflow guide, this invention directs a portion of the air from the cooling fan to the bottom of the freezer, directly solving the problem of insufficient cooling of food at the bottom when there is an excessive amount of food piled up inside. By incorporating a second airflow guide, air from the bottom of the freezer is directed to the cooling fan for further cooling, enabling circulation between the cooler air at the top and the warmer air at the bottom, thus ensuring a more uniform temperature inside the freezer. By incorporating a third airflow guide, air from the bottom of the freezer is directed to the second airflow guide, preventing dead zones and ensuring a more uniform temperature inside the freezer. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] in:

[0033] Figure 1 This is a schematic diagram of the overall structure of a food freezer in one embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the overall structure of a food freezer after the cabinet door has been removed, according to one embodiment of the present invention;

[0035] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0036] Figure 4This is a partial cross-sectional view of a food freezer from a first angle in one embodiment of the present invention;

[0037] Figure 5 for Figure 4 A magnified view of part B in the middle section;

[0038] Figure 6 This is a schematic diagram of the overall structure of the striking component in one embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the overall structure of the striking element at a first angle in one embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of the overall structure of the striking element at the second angle in one embodiment of the present invention;

[0041] Figure 9 This is a partial cross-sectional view of the striking component in one embodiment of the present invention;

[0042] Figure 10 This is a partial cross-sectional view of a food freezer from a second angle in one embodiment of the present invention;

[0043] In the diagram, 1. Freezer body; 11. Cabinet body; 111. Receiving cavity; 12. Cabinet door; 121. Protruding rod; 13. Air conditioner fan; 131. Outer shell; 132. Fan blades; 14. Shelf.

[0044] 2. Circulation assembly; 21. First air duct; 22. Second air duct; 23. Impacting element; 231. Fixing frame; 232. Rotating shaft; 233. Blade; 234. Rotating rod; 235. Impacting block; 24. Return air duct; 241. Air outlet; 242. Air inlet; 25. Curved plate;

[0045] 3. Protruding part; 31. Plate body; 311. Through hole; 3111. Upper through hole; 3112. Lower through hole; 312. Slide groove; 32. Cooling block. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] refer to Figures 1-10The present invention protects a food freezer, which includes a freezer body 1, the freezer body 1 including a cabinet 11 and a cabinet door 12 hinged to the cabinet 11, a cooling fan 13 inclinedly provided on the top inside the cabinet 11, and a plurality of storage boards 14 provided inside the cabinet 11. In a specific embodiment, a circulation component 2 is provided inside the cabinet 11.

[0048] The circulation component 2 includes a first flow guide, a second flow guide, and a third flow guide;

[0049] The first air guide can guide part of the air at the position of the air conditioner fan 13 to the bottom of the cabinet 11;

[0050] The second air guide allows the air at the bottom of the cabinet 11 to reach the air conditioning fan 13 through the second air guide and be cooled by the air conditioning fan 13.

[0051] The third air guide is installed on the bottom surface of the cabinet 11. The third air guide can guide the air at the bottom of the cabinet 11 to the second air guide.

[0052] This invention, by incorporating a first airflow guide, directs a portion of the air around the cooling fan 13 to the bottom of the cabinet 11, directly solving the problem of insufficient cooling of food at the bottom when there is an excessive amount of food piled up inside the freezer. The air around the cooling fan 13 primarily flows downwards to cool the food, with only a small amount of air being guided to the bottom of the cabinet 11 through the first airflow guide. By incorporating a second airflow guide, the air at the bottom of the cabinet 11 is guided to the cooling fan 13 for cooling, further achieving circulation between the cooler air at the top and the warmer air at the bottom, thus ensuring a more uniform temperature inside the cabinet 11. By incorporating a third airflow guide, the air at the bottom of the cabinet 11 is guided to the second airflow guide, preventing dead zones and ensuring a more uniform temperature inside the cabinet 11.

[0053] In one specific embodiment, the circulation component 2 includes a plurality of first air ducts 21, and the first flow guide is the first air duct 21;

[0054] The first air duct 21 is installed inside the side wall of the cabinet 11. The bottom end of the first air duct 21 protrudes from the side wall of the cabinet 11 and is close to the bottom surface of the cabinet 11. The top end of the first air duct 21 protrudes from the side wall of the cabinet 11 and is close to the top surface of the cabinet 11.

[0055] In this embodiment, by setting multiple first air ducts 21, the air around the air cooler fan 13 can be dispersed and guided to the bottom of the cabinet 11. The multiple first air ducts 21 divide the air at the top of the cabinet 11 into multiple smaller parts and mix them with the air at the bottom of the cabinet 11, which can increase the heat exchange area, improve the cooling efficiency, and make the air at the bottom of the cabinet 11 cool more effectively.

[0056] In one specific embodiment, the air conditioner fan 13 includes a housing 131, which, together with the top surface of the cabinet 11, forms a closed cavity. A through-hole is formed on the surface of the housing 131 near the cabinet door 12, and fan blades 132 are disposed within the through-hole. A conventional evaporator (not shown in the figure) is disposed inside the housing 131, which cools the air. The fan blades 132 are located on the plane of the housing 131 near the cabinet door 12, and these blades transport the air cooled by the evaporator into the cabinet 11.

[0057] The side wall of the outer casing 131 is connected to the top of the first air duct 21, so that some of the air inside the outer casing 131 can be guided to the bottom of the cabinet 11 through the first air duct 21.

[0058] In this embodiment, an outer casing 131 is provided to separate the air around the evaporator from the air inside the cabinet 11. A portion of the air around the evaporator is transported to the cabinet 11 via fan blades 132; the remaining air around the evaporator is directly transported to the bottom of the cabinet 11 via the first air duct 21. This ensures that even when a large amount of food is stored, the low-temperature air at the top of the cabinet 11 can be directly transported to the bottom of the cabinet 11, achieving uniform temperature inside the cabinet 11.

[0059] In one specific embodiment, the first air duct 21 is formed by connecting multiple circular pipes with progressively smaller diameters from top to bottom.

[0060] Multiple second air guides 22 are vertically arranged on the side wall of the first air guide duct 21, with the second air guides 22 located near the diameter change position of the first air guide duct 21. In practical applications, the second air guides 22 can be directly set at the diameter change position.

[0061] The second air duct 22 can draw air from the middle of the cabinet 11 into the interior of the first air duct 21 to achieve air circulation.

[0062] In this embodiment, the first air duct 21 is configured with a diameter that decreases sequentially from top to bottom. According to Bernoulli's principle, when air flows from a pipe with a larger diameter into a pipe with a smaller diameter, the air velocity increases, and a certain negative pressure will appear at the diameter change position. Therefore, by setting the second air duct 22 at the diameter change position, the second air duct 22 can generate suction, which can draw air from the middle of the cabinet 11 into the first air duct 21, thereby disturbing the air in the middle of the cabinet 11 and making the temperature of the air inside the cabinet 11 uniform.

[0063] In one specific embodiment, the air inlet end of the second air duct 22 is provided with a striking element 23. When air passes through the striking element 23, it can drive the striking element 23 to strike the shelf 14 and vibrate. In this embodiment, the shelf 14 is vibrated by setting the striking element 23. The vibration of the shelf 14 has three functions. The first function is to accelerate heat transfer. Vibration can generate micro-convection of cold air around the food, break the static air boundary layer on the surface of the food, shorten the freezing time to a certain extent, freeze the food faster, and prevent spoilage. The second function is to form fine ice crystals. During the freezing process of food, applying vibration can promote the formation of tiny ice nuclei by water molecules, and on this basis, fine ice crystals are formed. Fine ice crystals can reduce damage to food. For example, larger ice crystals can easily pierce raw sausages with natural casings, while fine ice crystals can keep the raw sausages with natural casings intact. The third function is to prevent sticking. Some foods, such as dumplings, are prone to sticking together. Applying vibration can prevent the foods from sticking together, making them easier to handle later.

[0064] In one specific embodiment, the striking element 23 includes a fixed frame 231 disposed in the second air duct 22. A rotating shaft 232 is rotatably disposed on the fixed frame 231. A blade 233 is disposed on the side wall of the rotating shaft 232. The protruding end of the rotating shaft 232 is connected to the striking block 235 through a rotating rod 234. The rotation of the rotating shaft 232 can drive the striking block 235 to strike the shelf 14.

[0065] In one specific embodiment, the rotating rod 234 is perpendicular to the rotating shaft 232, one end of the rotating rod 234 is hinged to the striking block 235, the striking block 235 is away from the rotating shaft 232, and the striking block 235 can deflect in a direction closer to the rotating shaft 232.

[0066] The impact block 235 is teardrop-shaped and made of a flexible material. This flexible material can be thermoplastic polyurethane elastomer (TPU) or polyether block amide (PEBA), both of which exhibit good elasticity at low temperatures.

[0067] In this embodiment, the striking block 235 is deflectable. When it impacts the shelf 14, it deflects in the opposite direction to the direction of movement, reducing direct impact on the shelf 14. The striking block 235 itself is teardrop-shaped, with a large bottom volume and is made of flexible material, further reducing direct impact on the shelf 14. In this embodiment, the striking block 235 can produce a slight impact on the shelf 14, causing a slight vibration in the shelf 14. This vibration has the advantages of vibration without damaging the cabinet 11, allowing the freezer to operate normally.

[0068] The second air guide is a return air duct 24, which is located inside the back wall of the cabinet 11. The air outlet 241 of the return air duct 24 is located on the back side of the air conditioner fan 13. Specifically, the air outlet 241 is located on the back side of the evaporator, and the air inlet 242 of the return air duct 24 is close to the bottom of the cabinet 11.

[0069] The third air guide is an arc-shaped plate 25. The side of the arc-shaped plate 25 closest to the cabinet door 12 is bent upward to guide the bottom air to the air inlet 242.

[0070] In this embodiment, by setting up a return air duct 24, the air at the top of the cabinet 11 flows downward from above the shelf 14, reaches the bottom of the cabinet 11, enters through the air inlet 242, passes through the return air duct 24, and is discharged through the air outlet 241 to the evaporator for cooling, thus realizing air circulation and ensuring uniform air distribution within the cabinet 11. The curved plate 25 serves as a guide, further enhancing the circulation effect.

[0071] In one specific embodiment, the cabinet 11 is provided with an extension 3, which is located above the cabinet door 12. The extension 3 is linked with the cabinet door 12. When the cabinet door 12 is open, the extension 3 extends out. When the cabinet door 12 is closed, the extension 3 enters the cabinet 11 and approaches the air conditioning fan 13. When closed, the extension 3 can approach the air conditioning fan 13 for cooling. When the extension 3 is extended, it can reduce the temperature of the outside air and prevent hot outside air from entering the interior of the cabinet 11.

[0072] Because the density of cold air inside is high, in existing freezers, when the door 12 is opened, the cold air inside sinks downwards and to the outside, simultaneously drawing in ambient air from the top of the door 12, affecting the freezing temperature. In this embodiment, a linked extension 3 is installed. When the door 12 is opened, the extension 3 extends from above, and the outside air, cooled by the extension 3, sinks vertically, forming an air curtain-like effect to prevent horizontally hot air from entering. Of course, some of the cooled outside air will still enter the cabinet 11, but even this cooled air has a minimal impact on the temperature.

[0073] In one specific embodiment, the protruding member 3 includes a plate 31 with several vertically oriented through holes 311, and a cooling block 32 is disposed within each through hole 311. When the plate 31 is extended, air above the plate 31 can flow downward through the through holes 311. The cooling block 32 is a hollow metal shell filled with a phase change material, which can be a commercially available material, such as Glacier Refrigerant LM-XL-18 used in cold chain transportation.

[0074] In this embodiment, by setting a phase change material, a large amount of heat can be absorbed during the phase change. When the cabinet door 12 is opened, the outside air can be cooled down in large quantities, avoiding large temperature fluctuations and preventing the food in the cabinet 11 from being affected.

[0075] In one specific embodiment, the through hole 311 is formed by a vertical combination of an upper through hole 3111 and a lower through hole 3112, with the diameter of the upper through hole 3111 being larger than the diameter of the lower through hole 3112. This allows the diameter of the cooling block 32 to be set to be larger than the lower through hole 3112 and smaller than the upper through hole 3111, enabling the cooling block 32 to be placed within the through hole 311 for easy replacement later. Furthermore, the diameter of the through hole 311 is wider at the top and narrower at the bottom, increasing the airflow velocity as it passes through, forming a faster-flowing air curtain that enhances the barrier effect and keeps the air inside the cabinet 11 at a low temperature.

[0076] In one specific embodiment, the cabinet body 11 is provided with a receiving cavity 111, the opening direction of which is parallel to the shelf 14. The receiving cavity 111 is used to receive the shelf 31. A sliding groove 312 is provided on the bottom surface of the shelf 31, which is close to the cabinet door 12. A protruding rod 121 is vertically provided at the top of the cabinet door 12, and the top of the protruding rod 121 is inserted into the sliding groove 312. In this embodiment, the sliding groove 312 and the protruding rod 121 are used in conjunction to achieve linkage, which has a stable effect and good economy.

[0077] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A food freezer, comprising a freezer body (1), the freezer body (1) comprising a cabinet (11) and a cabinet door (12) hinged to the cabinet (11), wherein a cooling fan (13) is obliquely arranged on the top inside the cabinet (11), and a plurality of shelves (14) are provided inside the cabinet (11), characterized in that, The cabinet (11) is equipped with a circulation component (2); The circulation component (2) includes a first flow guide, a second flow guide, and a third flow guide; The first air guide can guide part of the air at the location of the air conditioning fan (13) to the bottom of the cabinet (11); The second air guide allows the air at the bottom of the cabinet (11) to reach the air-cooling fan (13) through the second air guide and be cooled by the air-cooling fan (13); The third air guide is disposed on the bottom surface of the cabinet (11), and the third air guide can guide the air at the bottom of the cabinet (11) to the second air guide; The circulation component (2) includes a plurality of first air ducts (21), and the first air guide is the first air duct (21). The first air guide pipe (21) is disposed inside the side wall of the cabinet (11). The bottom end of the first air guide pipe (21) protrudes from the side wall of the cabinet (11) and is close to the bottom surface of the cabinet (11); the top end of the first air guide pipe (21) protrudes from the side wall of the cabinet (11) and is close to the top surface of the cabinet (11). The second air guide is a return air duct (24), which is located inside the back wall of the cabinet (11). The air outlet (241) of the return air duct (24) is located on the back side of the air cooler (13), and the air inlet (242) of the return air duct (24) is close to the bottom of the cabinet (11). The third air guide is an arc-shaped plate (25), with the side of the arc-shaped plate (25) near the cabinet door (12) curving upward to guide the bottom air to the air inlet (242).

2. The food freezer according to claim 1, characterized in that, The air conditioning fan (13) includes a housing (131) on which fan blades (132) are provided. The side wall of the outer shell (131) is connected to the top of the first air duct (21), so that some of the air inside the outer shell (131) can be guided to the bottom of the cabinet (11) through the first air duct (21).

3. The food freezer according to claim 1, characterized in that, The first air duct (21) is formed by connecting multiple circular pipes with progressively smaller diameters from top to bottom; The side wall of the first air duct (21) is vertically provided with a plurality of second air ducts (22), and the second air ducts (22) are close to the diameter change position of the first air duct (21); The second air duct (22) can draw the air in the middle of the cabinet (11) into the interior of the first air duct (21) to achieve air circulation.

4. The food freezer according to claim 3, characterized in that, The second air duct (22) has an air inlet end equipped with a striking element (23). When air passes through the striking element (23), it can drive the striking element (23) to strike the shelf (14) and vibrate.

5. The food freezer according to claim 4, characterized in that, The striking component (23) includes a fixed frame (231) disposed in the second air duct (22). A rotating shaft (232) is rotatably disposed on the fixed frame (231). A blade (233) is disposed on the side wall of the rotating shaft (232). The protruding end of the rotating shaft (232) is connected to the striking block (235) through a rotating rod (234). The rotation of the rotating shaft (232) can drive the striking block (235) to strike the shelf (14). One end of the rotating rod (234) is hinged to the striking block (235), and the striking block (235) can deflect toward the rotating shaft (232); The striking block (235) is teardrop-shaped and made of a flexible material.

6. The food freezer according to claim 1, characterized in that, The cabinet (11) is provided with an extension (3), which is located above the cabinet door (12). The extension (3) is linked with the cabinet door (12). When the cabinet door (12) is opened, the extension (3) extends out. When the cabinet door (12) is closed, the extension (3) enters the cabinet (11) and approaches the air conditioner fan (13). When the protruding part (3) extends, it can reduce the temperature of the outside air and prevent the high temperature outside air from entering the interior of the cabinet (11).

7. The food freezer according to claim 6, characterized in that, The protruding part (3) includes a plate (31), and the plate (31) is provided with several vertical through holes (311), and a cooling block (32) is provided in the through holes (311). When the plate (31) is extended, the air above the plate (31) can flow downward through the through hole (311).

8. The food freezer according to claim 7, characterized in that, The through hole (311) is formed by a vertical combination of an upper through hole (3111) and a lower through hole (3112), wherein the diameter of the upper through hole (3111) is larger than the diameter of the lower through hole (3112).

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