A quick-freezing and thawing refrigerator

Abstract

This application belongs to the field of freezer technology and discloses a freezer for rapid freezing and defrosting, including a cabinet, compressor, condenser, evaporator, ordinary drawer, and multi-functional drawer. A mounting groove is provided on the top of the cabinet, and a condenser pipe is installed within the mounting groove. Both ends of the condenser pipe are connected to the piping of the condenser. A heat-conducting plate is provided at the opening of the mounting groove. An air inlet square pipe is installed inside the cabinet, with several air inlets. The lower end of the air inlet square pipe is connected to an air outlet square pipe, with several air outlets. An exhaust unit is installed inside the air inlet square pipe. During rapid freezing, the exhaust unit blows air from the air inlet square pipe into the air outlet square pipe, and then directs the air through the air outlets onto the multi-functional drawer, achieving rapid freezing. During defrosting, the multi-functional drawer is placed on the heat-conducting plate on the top of the cabinet. Heat emitted from the condenser pipe is transferred to the heat-conducting plate, which then conducts the heat to the multi-functional drawer, accelerating defrosting.

Description

Technical Field

[0001] This utility model relates to the field of freezer technology, and in particular to a freezer for rapid freezing and thawing. Background Technology

[0002] A freezer is a commercial or household appliance used for the low-temperature storage of food, medicine, chemical products, and other items. It maintains a low internal temperature through a refrigeration system, extending the shelf life of the goods. Freezers are widely used in supermarkets, convenience stores, restaurants, laboratories, and other similar locations. Depending on their application, freezers can be categorized into commercial freezers, household freezers, medical freezers, and other types.

[0003] Current freezers can only freeze food. When users need to process food, they need to spend a long time thawing it. If there is leftover food after thawing that needs to be put back into the freezer, it cannot be refrozen in a short time, which affects the food storage effect. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a freezer for rapid freezing and thawing.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a freezer for rapid freezing and defrosting, comprising a cabinet body and a compressor, condenser, and evaporator installed inside the cabinet body and connected by pipes. The cabinet body also has a slidingly installed ordinary drawer and a multi-functional drawer. A mounting groove is provided on the top of the cabinet body, and a condenser pipe is installed in the mounting groove. Both ends of the condenser pipe are connected to the pipes of the condenser. A heat-conducting plate is provided at the opening of the mounting groove. An air inlet square pipe is installed inside the cabinet body, and several air inlets are provided on the air inlet square pipe. The lower end of the air inlet square pipe is connected to an air outlet square pipe, and several air outlets are provided on the air outlet square pipe. An exhaust unit is provided inside the air inlet square pipe to blow air from the air inlet square pipe into the air outlet square pipe and then exhaust it from the air outlets towards the multi-functional drawer.

[0006] By adopting the above technical solution, and setting up condenser pipes, inlet square pipes, and outlet square pipes, during quick freezing, the exhaust unit inside the cabinet can blow air from the inlet square pipe into the outlet square pipe, and then direct the air through several air outlets on the outlet square pipe towards the multi-functional drawer. This allows the cold air to act quickly and evenly on the items inside the multi-functional drawer, significantly shortening the freezing time and achieving rapid freezing. During thawing, the multi-functional drawer is removed and placed on the heat-conducting plate in the mounting slot at the top of the cabinet. The heat emitted from the condenser pipe is transferred to the heat-conducting plate, which then conducts the heat to the multi-functional drawer, accelerating the thawing of the items inside. This makes the thawing operation more convenient and efficient, simultaneously meeting the dual needs of rapid freezing and thawing, ensuring the effectiveness of food storage.

[0007] Furthermore, the air inlet square tube and the air outlet square tube are both provided with a hollow mounting plate on the side of the cabinet door near the cabinet body, and the evaporator is installed inside the mounting plate.

[0008] By adopting the above technical solution and setting up an installation plate, the cold air generated by the evaporator can enter the air inlet square pipe more directly, and the evaporator's cooling can be transferred to the air inlet and outlet square pipes through the installation plate, further ensuring the rapid freezing effect.

[0009] Furthermore, the mounting plate has an upper through hole corresponding to the air inlet, and an upper through pipe is installed inside the upper through hole. The mounting plate also has a lower through hole corresponding to the air outlet, and a lower through pipe is installed inside the lower through hole.

[0010] Furthermore, the air inlet square tube is U-shaped as a whole, and three air inlets are respectively opened on both sides of the air inlet square tube. The air outlet square tube is inverted U-shaped as a whole, and two air outlets are respectively opened on both sides of the air outlet square tube.

[0011] By adopting the above technical solution, the air inlet square duct is U-shaped and the air outlet square duct is inverted U-shaped, allowing the air inlet square duct to collect cold air generated by the evaporator more widely from both sides of the cabinet. The four air outlets can achieve uniform airflow to both sides of the multi-functional drawer, avoiding the cold air from being concentrated in only a local area of ​​the multi-functional drawer, and making the items in the multi-functional drawer freeze more evenly.

[0012] Furthermore, the two lower passage tubes on the upper side protrude from the mounting plate, and the multi-functional drawer has insertion holes corresponding to the two lower passage tubes on the upper side. The insertion holes are inserted and engaged with the corresponding lower passage tubes, and the two lower passage tubes on the lower side are located below the multi-functional drawer and tilted upwards.

[0013] By adopting the above technical solution, the plug-in connection allows the air outlet square tube to be connected to the multi-functional drawer, enabling the cold air exhausted from the outlet to directly enter the interior of the multi-functional drawer, improving the utilization rate of cold air and further accelerating the freezing speed. The cold air exhausted through the inclined downward-facing tube can blow upwards to the bottom of the multi-functional drawer, freezing the items at the bottom of the drawer.

[0014] Furthermore, the multi-functional drawer includes a heat-conducting aluminum plate and a plastic frame disposed on the heat-conducting aluminum plate.

[0015] By adopting the above technical solution, and incorporating a heat-conducting aluminum plate and a plastic frame, the aluminum plate, with its excellent thermal conductivity, can quickly conduct the cold air blown in from the vent to every corner of the drawer during freezing, accelerating the freezing of items. During thawing, the aluminum plate placed on the heat-conducting shelf can rapidly absorb the heat transferred by the shelf and evenly distribute it to the items inside the drawer, speeding up the thawing process.

[0016] Furthermore, the cabinet is vertically spaced with several sets of support plates. Each set of support plates includes two support plates respectively set on the inner walls of opposite sides of the cabinet. The bottom surfaces of the ordinary drawers and multi-functional drawers slide in contact with the top surfaces of the corresponding support plates. The width of the ordinary drawer is smaller than the width of the multi-functional drawer. The mounting plate is provided with a limiting plate on the side of the cabinet door near the cabinet body to limit the position of the ordinary drawer.

[0017] By adopting the above technical solution, multiple sets of support plates provide stable sliding support surfaces for both ordinary and multi-functional drawers, ensuring stable placement and sliding of the drawers and preventing unstable support. For ordinary drawers that are narrower than multi-functional drawers, the limiting plate restricts the sliding travel of the ordinary drawer, preventing the drawer from being too close to the upper passage pipe when placed, thus preventing it from blocking the upper passage pipe and affecting air intake.

[0018] Furthermore, the exhaust unit includes a centrifugal fan installed inside the air inlet square tube, with a sealing plate between the bottom of the air inlet side of the centrifugal fan and the inner wall of the opposite air inlet square tube, and the air outlet side facing downwards.

[0019] By adopting the above technical solution, the centrifugal fan draws in air from the air inlet square pipe and blows it towards the air outlet square pipe.

[0020] Furthermore, the condenser tube is provided with several heat-conducting plates, which are connected to the bottom surface of the heat-conducting plate.

[0021] By adopting the above technical solution, the heat-conducting plate can significantly increase the contact area between the condenser tube and the air, and at the same time, conduct the heat on the condenser tube to the heat-conducting plate more efficiently. During the defrosting process, the heat emitted by the condenser is transferred to the heat-conducting plate through the condenser tube, and the heat-conducting plate then quickly transfers the heat to the heat-conducting plate, so that the temperature of the heat-conducting plate can rise rapidly and be transferred to the multi-functional drawer, significantly improving the heat conduction efficiency and further accelerating the defrosting speed of items.

[0022] Furthermore, a U-shaped limiting frame is provided on the top of the cabinet.

[0023] By adopting the above technical solution, when the multi-functional drawer is placed on the heat-conducting plate at the top of the cabinet for defrosting, the U-shaped limiting frame can position and limit the multi-functional drawer, ensuring that the multi-functional drawer always maintains good contact with the heat-conducting plate.

[0024] In summary, this utility model has the following beneficial effects: In this application, a condenser pipe, an air inlet square pipe, and an air outlet square pipe are provided. During quick freezing, the exhaust unit inside the cabinet can blow air from the air inlet square pipe into the air outlet square pipe, and then direct the air towards the multi-functional drawer through several air outlets on the air outlet square pipe. This allows the cold air to act quickly and evenly on the items inside the multi-functional drawer, significantly shortening the freezing time and achieving rapid freezing. During thawing, the multi-functional drawer is removed and placed on the heat-conducting placement plate in the mounting slot at the top of the cabinet. At this time, the heat emitted from the condenser pipe is transferred to the heat-conducting placement plate, which then conducts the heat to the multi-functional drawer, thereby accelerating the thawing of the items inside the drawer. This makes the thawing operation more convenient and efficient, while simultaneously meeting the dual needs of rapid freezing and thawing, ensuring the food storage effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the condenser tube, heat-conducting plate, and mounting plate in an embodiment of this utility model; Figure 3 This is a schematic diagram of the internal structure of the cabinet in an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the air inlet square tube and the air outlet square tube according to an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the multifunctional drawer according to an embodiment of the present invention; Figure 6 This is a schematic diagram showing the connection of the compressor, condenser, condenser tube, and evaporator in an embodiment of this utility model.

[0026] In the diagram: 10. Cabinet body; 11. Standard drawer; 12. Multifunctional drawer; 121. Thermally conductive aluminum plate; 122. Plastic frame; 13. Support plate; 14. Limiting plate; 15. U-shaped limiting frame; 20. Mounting slot; 21. Condenser pipe; 22. Placement plate; 23. Thermal conductive sheet; 30. Inlet square pipe; 31. Outlet square pipe; 40. Exhaust unit; 41. Centrifugal fan; 42. Sealing plate; 50. Mounting plate; 51. Upper through pipe; 52. Lower through pipe. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] like Figure 1-6As shown in the figure, this application discloses a freezer for rapid freezing and defrosting, including a cabinet body 10, a regular drawer 11, a multi-functional drawer 12, and a compressor, condenser, and evaporator installed inside the cabinet body 10 and connected by pipes. The inner wall of the cabinet body 10 is provided with a heat insulation layer (the functions and connections of the cabinet body 10, compressor, condenser, and evaporator are the same as those of existing freezers, and will not be described in detail here). The regular drawer 11 and the multi-functional drawer 12 are both slidably installed inside the cabinet body 10. A mounting slot 20 is provided on the top of the cabinet 10. A condenser pipe 21 is installed in the mounting slot 20, and both ends of the condenser pipe 21 are connected to the pipes of the condenser. A heat-conducting plate 22 is provided at the opening of the mounting slot 20. When defrosting, the multi-functional drawer 12 is taken out and placed on the heat-conducting plate 22 in the mounting slot 20 on the top of the cabinet 10. At this time, the heat emitted from the condenser pipe 21 is transferred to the heat-conducting plate 22, and the heat-conducting plate 22 then conducts the heat to the multi-functional drawer 12, thereby accelerating the defrosting of the items in the drawer and making the defrosting operation more convenient and efficient. An air inlet square pipe 30 is provided inside the cabinet 10. The air inlet square pipe 30 has several air inlets. The lower end of the air inlet square pipe 30 is connected to an air outlet square pipe 31. The air outlet square pipe 31 has several air outlets. An exhaust unit 40 is provided inside the air inlet square pipe 30 to blow the air in the air inlet square pipe 30 into the air outlet square pipe 31 and then exhaust it from the air outlets to blow it towards the multi-functional drawer 12. During quick-freezing, the exhaust unit 40 inside the cabinet 10 blows air from the inlet square pipe 30 into the outlet square pipe 31, and then directs the air through several air outlets on the outlet square pipe 31 towards the multi-functional drawer 12. This allows the cold air to act quickly and evenly on the items inside the multi-functional drawer 12, significantly shortening the freezing time and achieving rapid freezing. It also addresses the dual need for rapid freezing and thawing, ensuring optimal food storage.

[0029] Specifically, a three-way valve is installed on the pipeline between the condenser and the compressor. The inlet end of the condenser pipe 21 is connected to the three-way valve, and the outlet end is connected to the pipeline between the three-way valve and the condenser. A controller is installed inside the cabinet 10 to control the various electrical components. An operation panel is installed on the cabinet 10 for operators to operate. The controller receives instructions from the operation panel and opens the three-way valve during defrosting, allowing refrigerant to enter the condenser pipe 21.

[0030] The exhaust unit 40 includes a waterproof centrifugal fan 41 installed inside the air inlet square duct 30, capable of operating in low-temperature environments. A sealing plate 42 is provided between the bottom of the air inlet side of the centrifugal fan 41 and the inner wall of the opposite air inlet square duct, while the air outlet side faces downward toward the exhaust square duct. This allows the centrifugal fan 41 to draw in air from the air inlet square duct 30 and blow it toward the air outlet square duct 31. Compared to ordinary fans, the centrifugal fan 41 has stronger airflow and more stable air output, ensuring that cold air passes through the air outlet square duct 31 at a sufficient speed and blows onto the multi-functional drawer 12, further shortening the freezing time and ensuring the stable achievement of rapid freezing effect.

[0031] During setup, several heat-conducting fins 23 are installed on the condenser tube 21, and these fins are connected to the bottom surface of the heat-conducting placement plate 22. The heat-conducting fins 23 significantly increase the contact area between the condenser tube 21 and the air, while also efficiently transferring heat from the condenser tube 21 to the heat-conducting placement plate 22. During defrosting, the heat emitted by the condenser is transferred to the heat-conducting fins 23 through the condenser tube 21, and then the heat-conducting fins 23 quickly transfer the heat to the heat-conducting placement plate 22, causing the temperature of the heat-conducting placement plate 22 to rise rapidly and be transferred to the multi-functional drawer 12, significantly improving heat transfer efficiency and further accelerating the defrosting speed of items. A U-shaped limiting frame 15 is installed at the top of the cabinet 10. When the multi-functional drawer 12 is placed on the heat-conducting plate 22 on the top of the cabinet 10 for defrosting, the U-shaped limiting frame 15 can position and limit the multi-functional drawer 12, ensuring that the multi-functional drawer 12 always maintains good contact with the heat-conducting plate 22, ensuring that heat can be continuously and stably transferred to the multi-functional drawer 12, and avoiding slowing down the defrosting speed or uneven defrosting due to drawer displacement.

[0032] In the specific setup, a hollow mounting plate 50 is installed on the side of the cabinet door adjacent to the air inlet square duct 30 and the air outlet square duct 31, with the evaporator housed within the mounting plate 50. The cold air generated by the evaporator can enter the air inlet square duct 30 more directly, and the evaporator's cooling effect can be transferred to the air inlet square duct 30 and the air outlet square duct 31 through the mounting plate 50, further ensuring rapid freezing. The hollow mounting plate 50 also provides some protection for the evaporator, preventing damage from collisions or scratches. An upper through-hole is provided on the mounting plate 50 corresponding to the air inlet, with an upper through-duct 51 installed inside. A lower through-hole is provided on the mounting plate 50 corresponding to the air outlet, with a lower through-duct 52 installed inside. This ensures stable airflow through the air inlet and outlet.

[0033] The air inlet square duct 30 is U-shaped, with three air inlets on each side of the duct. This allows the air inlet square duct 30 to collect cold air generated by the evaporator more widely from both sides of the cabinet 10. The six air inlets increase the amount of cold air entering, ensuring sufficient cooling supply within the air inlet square duct 30. The air outlet square duct 31 is inverted U-shaped, with two air outlets on each side of the duct. These four air outlets provide even airflow to both sides of the multi-functional drawer 12, preventing cold air from concentrating in a localized area of ​​the multi-functional drawer 12 and ensuring more even freezing of items inside. Two lower access pipes 52 protrude from the mounting plate 50 on the upper side. The multi-functional drawer 12 has corresponding insertion holes for these two lower access pipes 52. These insertion holes engage with the corresponding lower access pipes 52, allowing the air outlet square pipe 31 to connect with the multi-functional drawer 12. This allows the cold air exhausted from the air outlet to directly enter the interior of the multi-functional drawer 12, improving cold air utilization and further accelerating the freezing speed. The two lower access pipes 52 are located below the multi-functional drawer 12 and are inclined upwards. The cold air exhausted from the inclined lower access pipes 52 blows upwards onto the bottom of the multi-functional drawer 12, freezing items at the bottom of the drawer. This ensures that items in both the upper and lower layers of the multi-functional drawer 12 are frozen quickly, improving the uniformity and efficiency of the overall freezing effect. The multi-functional drawer 12 includes a heat-conducting aluminum plate 121 and a plastic frame 122 mounted on the heat-conducting aluminum plate 121. The heat-conducting aluminum plate 121 has excellent thermal conductivity, allowing it to quickly conduct the cold air blown in from the air outlet to every corner of the drawer during freezing, accelerating the freezing of items. During defrosting, the heat-conducting aluminum plate 121 placed on the heat-conducting plate 22 can quickly absorb the heat transferred by the heat-conducting plate 22 and evenly transfer the heat to the items in the drawer, thus accelerating the defrosting speed.

[0034] Several sets of support plates 13 are vertically spaced inside the cabinet 10. Each set of support plates 13 includes two support plates 13 respectively set on the inner walls of opposite sides of the cabinet 10. The bottom surfaces of the ordinary drawer 11 and the multi-functional drawer 12 slide in contact with the top surfaces of the corresponding support plates 13. The width of the ordinary drawer 11 is smaller than the width of the multi-functional drawer 12. A limiting plate 14 is set on the side of the mounting plate 50 near the cabinet door of the cabinet 10 to limit the position of the ordinary drawer 11. The multiple sets of support plates 13 provide a stable sliding support surface for the ordinary drawer 11 and the multi-functional drawer 12, ensuring the stable placement and pushing and pulling of the drawers and avoiding unstable support. Since the width of the ordinary drawer 11 is smaller than the width of the multi-functional drawer 12, the limiting plate 14 limits the pushing and pulling stroke of the ordinary drawer 11 to prevent the drawer from being close to the upper passage pipe 51 when placed, thus blocking the upper passage pipe 51 and affecting the air intake of the upper passage pipe 51.

[0035] The operating principle of the freezer for rapid freezing and thawing in this embodiment is as follows: A corresponding command is issued via the operation panel on the cabinet 10, and the controller receives the command and executes the corresponding program. If rapid freezing is required, the controller activates the exhaust unit 40, and the centrifugal fan 41 blows the cold air collected from the six air inlets on both sides of the air inlet square pipe 30, cooled by the evaporator, into the air outlet square pipe 31. The cold air then flows directionally and evenly through the four air outlets on both sides of the air outlet square pipe 31 towards the multi-functional drawer 12. Simultaneously, the evaporator, through the mounting plate 50, assists in cooling the air inlet square pipe 30 and the air outlet square pipe 31, thus achieving rapid freezing of items. To defrost, first remove the multi-functional drawer 12 from the cabinet 10 and place it on the heat-conducting placement plate 22 defined by the U-shaped limiting frame 15 at the top of the cabinet 10. Then, issue a defrosting command through the control panel. The controller controls the three-way valve to open, allowing refrigerant to enter the condenser pipe 21 connected to the condenser pipe. The heat generated by the condenser pipe 21 is efficiently transferred to the heat-conducting placement plate 22 via the heat-conducting sheet 23. The heat-conducting placement plate 22 then conducts the heat to the heat-conducting aluminum plate 121 of the multi-functional drawer 12, thereby accelerating the defrosting of the items inside the drawer.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A freezer for rapid freezing and thawing, comprising a cabinet (10) and a compressor, a condenser, and an evaporator disposed within the cabinet (10) and connected by pipes, wherein the cabinet (10) also has a regular drawer (11) and a multi-functional drawer (12) slidably disposed within the cabinet (10), characterized in that: The cabinet (10) has an installation groove (20) on its top. A condenser pipe (21) is installed in the installation groove (20). Both ends of the condenser pipe (21) are connected to the pipes of the condenser. A heat-conducting plate (22) is installed at the opening of the installation groove (20). An air inlet square pipe (30) is installed in the cabinet (10). Several air inlets are opened on the air inlet square pipe (30). An air outlet square pipe (31) is connected to the lower end of the air inlet square pipe (30). Several air outlets are opened on the air outlet square pipe (31). An exhaust unit (40) is installed in the air inlet square pipe (30) to blow the air in the air inlet square pipe (30) into the air outlet square pipe (31) and then blow it out from the air outlet to the multi-functional drawer (12).

2. The freezer for rapid freezing and thawing according to claim 1, characterized in that: The air inlet square pipe (30) and the air outlet square pipe (31) are provided with a hollow mounting plate (50) on the side of the cabinet door near the cabinet body (10), and the evaporator is installed inside the mounting plate (50).

3. A freezer for rapid freezing and thawing according to claim 2, characterized in that: The mounting plate (50) has an upper through hole corresponding to the air inlet, and an upper through pipe (51) is provided in the upper through hole. The mounting plate (50) has a lower through hole corresponding to the air outlet, and a lower through pipe (52) is provided in the lower through hole.

4. A freezer for rapid freezing and thawing according to claim 3, characterized in that: The air inlet square tube (30) is U-shaped in general, and three air inlets are respectively provided on both sides of the air inlet square tube (30). The air outlet square tube (31) is inverted U-shaped in general, and two air outlets are respectively provided on both sides of the air outlet square tube (31).

5. A freezer for rapid freezing and thawing according to claim 4, characterized in that: The two lower passage tubes (52) on the upper side protrude from the mounting plate (50). The multi-functional drawer (12) has insertion holes corresponding to the two lower passage tubes (52) on the upper side. The insertion holes are inserted and engaged with the corresponding lower passage tubes (52). The two lower passage tubes (52) on the lower side are located below the multi-functional drawer (12) and tilt upward.

6. A freezer for rapid freezing and thawing according to claim 5, characterized in that: The multi-functional drawer (12) includes a heat-conducting aluminum plate (121) and a plastic frame (122) disposed on the heat-conducting aluminum plate (121).

7. A freezer for rapid freezing and thawing according to claim 5, characterized in that: The cabinet (10) is vertically spaced with several sets of support plates (13). Each set of support plates (13) includes two support plates (13) respectively set on the inner walls of opposite sides of the cabinet (10). The bottom surface of the ordinary drawer (11) and the multi-functional drawer (12) slides in contact with the top surface of the corresponding support plate (13). The width of the ordinary drawer (11) is smaller than the width of the multi-functional drawer (12). The mounting plate (50) is provided with a limiting plate (14) on the side of the cabinet door of the cabinet (10) to limit the position of the ordinary drawer (11).

8. A freezer for rapid freezing and thawing according to claim 1, characterized in that: The exhaust unit (40) includes a centrifugal fan (41) installed inside the air inlet square tube (30). A sealing plate (42) is provided between the bottom of the air inlet side of the centrifugal fan (41) and the inner wall of the opposite air inlet square tube, and the air outlet side faces downward.

9. A freezer for rapid freezing and thawing according to claim 1, characterized in that: The condenser tube (21) is provided with a plurality of heat-conducting plates (23), and the heat-conducting plates (23) are connected to the bottom surface of the heat-conducting placement plate (22).

10. A freezer for rapid freezing and thawing according to claim 1, characterized in that: The top of the cabinet (10) is provided with a U-shaped limiting frame (15).

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