Air-cooled refrigerator

Abstract

The utility model provides a kind of air-cooled refrigerator, its refrigeration box is provided with refrigeration compartment, and the air duct of two end communication refrigeration compartment is formed on refrigeration box. Fan and evaporator are all installed in air duct, evaporator is located in the upstream of fan, water pan is formed on air duct and is located below evaporator. Evaporator includes front end air inlet, bottom side air inlet and rear end air outlet, water pan forms downward recessed water tank, the bottom of front end air inlet is located above water tank, and there is gap between the bottom of front end air inlet and the bottom wall of water tank, so that air inlet end can be connected with air duct located in the upstream of evaporator, when air inlet end of evaporator is blocked due to frost, air in air duct can flow along water tank, and flow into evaporator along bottom side air inlet, ensure the unobstructed of air duct, so that evaporator can still heat exchange air after front end air inlet is blocked, ensure that evaporator continues to work.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to an air-cooled freezer. Background Technology

[0002] A freezer is a common refrigeration device widely used for food storage in shopping malls and other settings. A freezer generally consists of a cabinet and a door. The cabinet forms an open refrigeration compartment, and the door is connected to the cabinet by hinges. As the door rotates relative to the cabinet, the opening of the refrigeration compartment can be opened or closed.

[0003] Existing air-cooled freezers typically have air ducts that connect to the refrigeration compartment, and evaporators are installed inside the air ducts to cool and lower the temperature of the air inside the air ducts.

[0004] However, during the process of cooling and lowering the temperature of the air, if there is too much moisture in the air, frost can easily form on the evaporator. This can cause blockages in the evaporator or air duct before the cooling process is finished, affecting the smooth flow of the air duct and the operation of the evaporator, thus affecting the overall cooling effect of the freezer. Utility Model Content

[0005] The purpose of this invention is to provide an air-cooled freezer that can prevent frost from affecting the air duct and allow the evaporator to work continuously.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: According to one aspect of this utility model, a wind-cooled freezer is provided, comprising: a cabinet having an installation space therein; a refrigeration chamber installed within the installation space, the refrigeration chamber having a refrigeration compartment, an air duct formed on the refrigeration chamber, the two ends of the air duct connecting to the refrigeration compartment; a fan installed within the air duct, the fan driving air in the refrigeration compartment to flow along the air duct; a water collection tray formed on the air duct, the water collection tray having a downwardly recessed water collection groove; and an evaporator installed within the air duct and located above the water collection groove, the evaporator exchanging heat with the air flowing through the air duct, the evaporator including a front air inlet, a bottom air inlet, and a rear air outlet; wherein, a gap exists between the bottom edge of the front air inlet and the bottom wall of the water collection groove, the gap communicating with the bottom air inlet, the air flowing into the evaporator through the front air inlet and the bottom air inlet, and exiting the evaporator through the rear air outlet.

[0007] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects: The air-cooled freezer includes a cabinet, a refrigeration chamber, a fan, an evaporator, and a drip tray. The refrigeration chamber is installed within the cabinet's mounting space. A refrigeration compartment is provided inside the refrigeration chamber, and an air duct is formed on the refrigeration chamber with both ends connecting to the refrigeration compartment. Both the fan and the evaporator are installed within the air duct. When the fan drives the air in the refrigeration compartment to flow along the air duct, the evaporator can exchange heat with the air and lower its temperature, thereby completing the cooling of the refrigeration compartment. Simultaneously, a drip tray is formed on the air duct and has a downwardly recessed drip groove. The evaporator includes a front air inlet, a bottom air inlet, and a rear air outlet. A gap exists between the bottom edge of the front air inlet and the bottom wall of the water collection tank, allowing it to connect to the bottom air inlet. When the front air inlet becomes blocked due to frost, air within the duct can flow along the gap and into the evaporator through the bottom air inlet, exiting from the rear air outlet, thus ensuring unobstructed airflow. Therefore, air flowing along the water collection tank can enter the evaporator through the bottom air inlet, allowing the evaporator to continue exchanging heat even when the front air inlet is blocked, ensuring continuous operation and thus maintaining the overall cooling effect of the freezer.

[0008] In one embodiment of this application, the air duct includes an evaporation section, which is inclined from bottom to top in the direction of air flow. The evaporator is installed in the evaporation section, and the axis between the front air inlet and the rear air outlet is inclined from bottom to top in the direction of air flow.

[0009] The evaporator section is inclined from bottom to top, which conforms to the airflow characteristics and ensures smooth airflow within the duct. Simultaneously, the axis between the front air inlet and the rear air outlet is also inclined from bottom to top, meaning the evaporator is also inclined in the same direction as the evaporator section. This allows air within the evaporator section to flow along the longest path through the evaporator, ensuring the evaporator can effectively cool the air within the evaporator section and guaranteeing a cooling effect.

[0010] In one embodiment of this application, the plane where the front air inlet is located is inclined from top to bottom in the direction of air flow.

[0011] In terms of airflow direction, the plane where the front air inlet is located is inclined from top to bottom. When the front air inlet is blocked by frost, the inclined plane can guide the airflow into the water tank, thereby improving the airflow efficiency in the duct.

[0012] In one embodiment of this application, the water receiving tray includes an extension plate and an abutment plate. The extension plate protrudes and extends from the edge of the water receiving trough toward the downstream direction of the water receiving tray. There is a gap between the extension plate and the bottom air inlet. The abutment plate is connected to the side of the extension plate away from the water receiving trough and abuts against the bottom of the rear air outlet edge.

[0013] The water collection trough has an extension plate extending downstream, spaced apart from the bottom air inlet. This allows air flowing through the trough to enter the evaporator from the bottom air inlet. The extension plate also increases the area connecting the bottom air inlet and the water collection trough, ensuring unobstructed airflow and preventing excessive frost buildup on the evaporator that could block the airflow. Furthermore, a retaining plate is connected to the side of the extension plate furthest from the water collection trough and rests against the bottom edge of the rear air outlet. This prevents the water collection trough from directly connecting to the downstream airflow of the evaporator, ensuring that air in the trough flows through the evaporator before reaching the downstream airflow, thus facilitating heat exchange between the evaporator and the air within the airflow.

[0014] In one embodiment of this application, the abutment plate is inclined from bottom to top in the direction of air flow.

[0015] In terms of airflow direction, since the evaporator is inclined from bottom to top, the abutment plate is also inclined from bottom to top, which can increase the contact area between the abutment plate and the bottom side of the evaporator, so that the abutment plate can stably support the evaporator and ensure the evaporator is installed securely.

[0016] In one embodiment of this application, the evaporator is provided with a heating tube, a finned body and an evaporation tube, the evaporation tube is disposed inside the finned body and the heating tube is disposed on the outer peripheral wall of the finned body.

[0017] The evaporator tubes are located inside the fin body to ensure the heat exchange efficiency of the medium inside the evaporator tubes. The heating tubes are arranged on the outer peripheral wall of the fin body to ensure that the entire fin body can defrost when the heating tubes heat the fin body for defrosting.

[0018] In one embodiment of this application, the air-cooled freezer further includes a heat-conducting plate, which is installed in the air duct. The heat-conducting plate includes a first abutting surface and a second abutting surface connected together. The first abutting surface and the second abutting surface are arranged at an angle. In the direction of air flow, the first abutting surface is inclined from bottom to top and is attached to the top side of the fin body. The second abutting surface is used to install the fan.

[0019] The heat-conducting plate has its first and second contact surfaces set at an angle, allowing it to adapt to the air duct structure and connect between the fin body and the fan. The first contact surface is attached to the top side of the fin body, while the second contact surface is used to mount the fan. When the heating element defrosts the fin body, the heat-conducting plate transfers heat to the fan to defrost it, ensuring the fan operates normally.

[0020] In one embodiment of this application, the air-cooled freezer further includes a heat insulation component, which is installed in the air duct and located on the side of the air duct facing the refrigeration chamber. The heat insulation component is used to install the heat-conducting plate, and the heat-conducting plate is located on the side of the heat insulation component away from the refrigeration chamber. The top of the evaporator is disposed facing the heat insulation component, and the fan is connected to the air duct through the heat insulation component.

[0021] The insulation component is installed inside the air duct, on the side of the duct facing the cooling room, preventing heat convection between the air duct and the cooling room. Simultaneously, the insulation component houses the heat-conducting plate, located on the side of the insulation component away from the cooling room. The top of the evaporator faces the insulation component, and the fan is connected to the air duct via the insulation component. During defrosting, the insulation component isolates heat from the evaporator, heat-conducting plate, and fan, preventing heat from affecting the interior of the cooling room.

[0022] In one embodiment of this application, the air-cooled freezer further includes a cover, which is mounted on the heat insulation component. A ventilation cavity for accommodating the fan is formed between the cover and the heat insulation component. The ventilation cavity is open on one side facing the air outlet of the air duct. A ventilation opening is provided on the side wall of the ventilation cavity so that the ventilation cavity can connect to the air inlet of the air duct. The ventilation opening is provided corresponding to the fan.

[0023] The unit consists of a housing mounted on a heat insulation component, forming a ventilation cavity between the heat insulation component and the housing. A fan is installed within this ventilation cavity. One side of the ventilation cavity is open, allowing it to connect to an air outlet. Simultaneously, ventilation holes are provided on the side wall of the ventilation cavity, connecting it to the air inlet of a ventilation duct. These ventilation holes are positioned corresponding to the fan, enabling the fan to drive air within the duct along the ventilation cavity during operation, thereby improving airflow efficiency.

[0024] In one embodiment of this application, a sealing portion is provided on the outer side wall of the machine cover. The sealing portion and the vent are located on the same side wall of the machine cover, and in the direction of air flow, the sealing portion is located downstream of the vent, and the sealing portion abuts against the inner wall of the air duct.

[0025] The outer wall of the casing has a protruding sealing section that abuts against the inner wall of the air duct, thus sealing the space between the outer wall of the casing and the inner wall of the air duct to prevent air leakage. Simultaneously, in the direction of airflow, the sealing section is located downstream of the ventilation hole, allowing air in the air duct to flow into the ventilation chamber from the ventilation hole and then flow from the opening of the ventilation chamber to the air outlet. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an air-cooled freezer according to an embodiment of the present invention.

[0027] Figure 2 yes Figure 1 A cross-sectional view of an air-cooled freezer.

[0028] Figure 3 yes Figure 1 A cross-sectional view of the refrigeration unit of an air-cooled freezer.

[0029] Figure 4 yes Figure 1 Another cross-sectional view of the air-cooled freezer.

[0030] Figure 5 yes Figure 4 A magnified view of point A.

[0031] Figure 6 yes Figure 4 Enlarged view of point B.

[0032] Figure 7 yes Figure 1 A schematic diagram of the evaporator and heat transfer plate of an air-cooled freezer.

[0033] Figure 8 yes Figure 1 A partial schematic diagram of an air-cooled freezer.

[0034] Figure 9 yes Figure 1 Another partial schematic diagram of an air-cooled freezer.

[0035] Figure 10 yes Figure 1 Another partial schematic diagram of an air-cooled freezer.

[0036] The annotations in the attached figures are explained as follows: 10-Cabinet; 11-Installation space; 20-Refrigeration cabinet; 21-Refrigeration compartment; 22-Air duct; 23-Door; 30-Fan; 41-Evaporator; 42-Drain tray; 50-Heat conduction plate; 51-First contact surface; 52-Second contact surface; 60-Insulation component; 70-Cover; 71-Ventilation cavity; 72-Ventilation opening; 73-Enclosed part; 74-Open opening; 80-Compressor; 221-Air inlet; 222-Air outlet; 223-Evaporation section; 411-Front air inlet; 412-Rear air outlet; 413-Heating tube; 414-Fin body; 415-Evaporator tube; 416-Bottom side air inlet; 417-Gap; 421-Drain tray; 422-Extension plate; 423-Contact plate. Detailed Implementation

[0037] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0038] In the description of this utility model, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) 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. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications will also change accordingly.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Existing air-cooled freezers typically have air ducts that connect to the refrigeration compartment, and evaporators are installed inside the air ducts to cool and lower the temperature of the air inside the air ducts.

[0041] However, during the cooling process, excessive moisture in the air can cause frost to form on the evaporator, leading to blockages in the evaporator or air ducts before the cooling process is complete. This affects airflow and evaporator operation, ultimately impacting the overall cooling performance of the freezer. Therefore, this paper proposes an air-cooled freezer to address these issues.

[0042] The solution is further illustrated by the following examples: Figure 1 This is a schematic diagram of an air-cooled freezer according to an embodiment of the present invention. Figure 2 yes Figure 1 A cross-sectional view of an air-cooled freezer. Figure 3 yes Figure 1 A cross-sectional view of the refrigeration unit of an air-cooled freezer. In this embodiment, using... Figure 3 The vertical direction in the text refers to the vertical direction of the air-cooled freezer.

[0043] Please see Figure 1 and Figure 2 The air-cooled freezer of this embodiment can be used to refrigerate vegetables, fruits, dairy products, frozen foods or other ingredients.

[0044] In some embodiments, an air-cooled freezer may include a cabinet 10 and a refrigeration unit 20.

[0045] Specifically, the cabinet 10 has an installation space 11 inside, and one side of the installation space 11 is open.

[0046] The refrigeration unit 20 is installed within the installation space 11, and a refrigeration compartment 21 is provided inside the refrigeration unit 20 for placing items that need to be refrigerated. One side of the refrigeration compartment 21 is open to facilitate placing items in or removing items from the refrigeration compartment 21.

[0047] In some embodiments, the air-cooled freezer may further include a door 23, which is hinged to the refrigeration body 20 and located at the edge of the open side of the refrigeration compartment 21, so that the door 23 can rotate relative to the refrigeration body 20 to open or close the refrigeration compartment 21.

[0048] It should be noted that when the refrigeration box 20 is installed in the installation space 11, the side of the refrigeration box 20 with the box door 23 extends out of the installation space 11 from the open side of the installation space 11, so as to facilitate the user to operate the box door 23 to open or close the refrigeration compartment 21.

[0049] In some embodiments, see Figure 3 A duct 22 can be formed on the refrigeration box 20. Both ends of the duct 22 are connected to the refrigeration chamber 21. That is, the air inlet 221 and the air outlet 222 of the duct 22 are both connected to the refrigeration chamber 21. In the vertical direction, the air outlet 222 is located above the air inlet 221 to facilitate the circulation of air in the refrigeration chamber 21 along the duct 22.

[0050] Figure 4 yes Figure 1 Another cross-sectional view of the air-cooled freezer. Figure 5 yes Figure 4A magnified view of point A. Figure 6 yes Figure 4 Enlarged view of point B.

[0051] See Figure 4 and Figure 5 The air-cooled freezer may also include a fan 30, an evaporator 41, and a drip tray 42.

[0052] In some embodiments, the fan 30 can be installed in the air duct 22, and the fan 30 can be used to drive the air in the cooling room 21 to flow along the air duct 22, so that the air in the cooling room 21 can circulate.

[0053] In some embodiments, the evaporator 41 may be installed inside the air duct 22 and located upstream of the fan 30. The evaporator 41 is used to exchange heat with the air flowing through the air duct 22, thereby cooling and refrigerating the air flowing through the air duct 22, so that the temperature of the air returning from the air duct 22 to the refrigeration chamber 21 meets the requirements, thereby ensuring that the temperature in the refrigeration chamber 21 is maintained within a specific refrigeration temperature.

[0054] In this embodiment, the evaporator 41 may include a front air inlet 411, a bottom air inlet 416, and a rear air outlet 412. In the direction of air flow, the front air inlet 411 and the rear air outlet 412 are located at opposite ends of the evaporator 41. The bottom air inlet 416 is located on the bottom side of the evaporator 41 and is situated between the front air inlet 411 and the rear air outlet 412.

[0055] In some embodiments, a drip tray 42 may be formed on the air duct 22 and located below the evaporator 41. The drip tray 42 can be used to collect defrost water dripping from the evaporator 41 during defrosting, preventing defrost water from dripping into the air duct 22 or into the installation space 11.

[0056] In some embodiments, the water receiving tray 42 may have a downwardly recessed water receiving groove 421. The bottom of the front air inlet 411 of the evaporator 41 is located above the water receiving groove 421, and there is a gap 417 between the bottom edge of the front air inlet 411 of the evaporator 41 and the bottom wall of the water receiving groove 421, so that the water receiving groove 421 can connect to the air duct 22 located upstream of the evaporator 41. Thus, when the front air inlet 411 of the evaporator 41 is blocked due to frost, the air in the air duct 22 can flow along the water receiving groove 421 and flow into the evaporator 41 from the bottom air inlet 416, and flow out through the rear air outlet 412 of the evaporator 41, so that the air flows to the air duct 22 downstream of the evaporator 41, thereby ensuring the unobstructed flow of the air duct 22.

[0057] In some embodiments, the bottom edge of the rear air outlet 412 of the evaporator 41 is located outside the water tank 421 and abuts against the bottom wall of the air duct 22, thereby blocking the connection between the water tank 421 and the air duct 22 downstream of the evaporator 41, and preventing the air in the water tank 421 from flowing directly into the air duct 22 downstream of the evaporator 41.

[0058] It should be noted that during the cooling process, if the humidity in the air is too high, the front air inlet 411 of the evaporator 41 is prone to frosting before the cooling program ends, causing the front air inlet 411 to become blocked, thereby blocking the air duct 22 and preventing air from flowing along the air duct 22. At this time, the air in the cooling chamber 21 and the air duct 22 cannot flow, and cooling cannot continue. At the same time, due to insufficient cooling time, the temperature in the cooling chamber 21 cannot drop to the preset temperature, resulting in an excessively high temperature in the cooling chamber 21, which may easily affect the items stored in the cooling chamber 21.

[0059] In this embodiment, when the front air inlet 411 of the evaporator 41 becomes blocked due to frost, the gap 417 between the bottom edge of the front air inlet 411 and the bottom wall of the water collection tank 421 allows air in the upstream air duct 22 of the evaporator 41 to flow along the water collection tank 421. Simultaneously, since the bottom edge of the rear air outlet 412 is located outside the water collection tank 421 and abuts against the bottom wall of the air duct 22, air in the water collection tank 421 first enters the evaporator 41 through the bottom air inlet 416, and then flows from the rear air outlet 412 to the downstream air duct of the evaporator 41, enabling the evaporator 41 to exchange heat with the air. That is, the evaporator 41 can still exchange heat with the air even after the front air inlet 411 is blocked, ensuring continuous operation of the evaporator 41, thereby extending the heat exchange time of the evaporator 41, extending the cooling time, and ultimately ensuring the overall cooling effect of the freezer.

[0060] See Figure 4 The air-cooled freezer may also include a compressor 80. The compressor 80 is installed within the installation space 11 and located below the drip tray 42. The compressor 80 is connected to the evaporator 41 to provide a heat exchange medium to the evaporator 41, enabling the evaporator 41 to cool and refrigerate the air flowing through the air duct 22.

[0061] In some embodiments, the bottom of the drip tray 42 is connected to the outer wall of the compressor 80, so that the defrosting water collected in the drip tray 421 can flow to the compressor 80, so that the compressor 80 can use the heat generated during its operation to evaporate the defrosting water, thus preventing the defrosting water from flowing or dripping to other locations in the installation space 11 and affecting the cabinet 10.

[0062] In some embodiments, see Figure 5The air duct 22 may include an evaporation section 223. The evaporation section 223 is inclined upwards in the airflow direction, allowing the air flowing through it to also flow upwards. Simultaneously, the evaporator 41 is installed within the evaporation section 223, and its axis from the front air inlet 411 to the rear air outlet 412 is inclined upwards in the airflow direction. That is, the inclination direction of the evaporation section 223 is consistent with the inclination direction of the evaporator 41, and conforms to the characteristic of air flowing upwards. This allows the air within the evaporation section 223 to flow along the longest path through the evaporator 41, thereby improving the heat exchange efficiency of the evaporator 41 and ensuring that the evaporator 41 can effectively cool the air within the evaporation section 223, guaranteeing a cooling effect.

[0063] In some embodiments, the plane containing the front air inlet 411 is inclined from top to bottom in the direction of air flow.

[0064] In terms of airflow direction, the plane where the front air inlet 411 is located is inclined from top to bottom. When the front air inlet 411 is blocked by frost, the inclined plane where the front air inlet 411 is located can guide the airflow into the water tank 421, thereby improving the airflow efficiency in the air duct 22.

[0065] In some embodiments, see Figure 5 The water receiving tray 42 may include an extension plate 422 and an abutment plate 423. The extension plate 422 protrudes and extends from the edge of the water receiving tank 421 in a downstream direction. That is, the extension plate 422 is connected to the downstream side wall of the water receiving tray 42 and is located at the edge of the opening of the water receiving tank 421, so that water dripping onto the extension plate 422 can flow along the extension plate 422 into the water receiving tank 421.

[0066] In some embodiments, the extension plate 422 is spaced apart from the bottom air inlet 416, allowing air flowing through the water inlet 421 to enter the evaporator 41 from the bottom air inlet 416. Simultaneously, the extension plate 422 increases the area connecting the bottom of the evaporator 41 to the water inlet 421, thus increasing the area connecting the bottom air inlet 416 to the water inlet 421. This ensures unobstructed airflow in the duct 22 and prevents excessive frost buildup at the front air inlet 411 of the evaporator 41, preventing blockage of the passage between the water tray 42 and the evaporator 41.

[0067] In some embodiments, the abutment plate 423 is connected to the side of the extension plate 422 away from the water tank 421, and the abutment plate 423 abuts against the bottom edge of the rear air outlet 412, so that the abutment plate 423 can support the evaporator 41. In addition, the abutment plate 423 is connected to the side of the extension plate 422 away from the water tank 421 and abuts against the bottom edge of the rear air outlet 412 of the evaporator 41, thereby preventing the water tank 421 from directly connecting to the air duct downstream of the evaporator 41, so that the air in the water tank 421 flows through the evaporator 41 and then flows to the air duct 22 downstream of the evaporator 41, ensuring that the evaporator 41 can exchange heat with the air in the air duct 22.

[0068] In some embodiments, the extension plate 422 is configured as an arc-shaped plate with a certain curvature, and the extension plate 422 is convex towards the evaporator 41 to facilitate air flowing along the surface of the extension plate 422 and into the evaporator 41 through the bottom air inlet 416. At the same time, the arc shape and upward convexity of the extension plate 422 allow defrosting water falling on the upper surface of the extension plate 422 to flow smoothly into the water receiving tank 421, preventing defrosting water from accumulating on the extension plate 422.

[0069] In some embodiments, the abutment plate 423 is inclined from bottom to top in the airflow direction. Since the evaporator 41 is inclined from bottom to top in the airflow direction, the abutment plate 423 is inclined from bottom to top, which can increase the contact area between the abutment plate 423 and the bottom side of the evaporator 41, so that the abutment plate 423 can stably support the evaporator 41 and ensure that the evaporator 41 is securely installed.

[0070] In some embodiments, see Figure 5 In the vertical direction, the abutment plate 423 is located above the water receiving tray 42, that is, the abutment plate 423 is higher than the water receiving tray 42, so that the evaporation section 223 is kept in an inclined state to facilitate air flow. At the same time, the abutment plate 423 being higher than the water receiving tray 42 allows the evaporator 41 to be installed at an angle, and ensures the gap between the bottom edge of the front air inlet 411 and the bottom wall of the water receiving tray 421. It also increases the gap between the bottom edge of the front air inlet 411 and the bottom wall of the water receiving tray 421, preventing frost from causing blockage between the bottom edge of the front air inlet 411 and the bottom wall of the water receiving tray 421.

[0071] It should be noted that, in the vertical direction, the top of the side wall of the water receiving trough 421 away from the extension plate 422 is lower than or equal to the extension plate 422, so as to shorten the path between the water receiving tray 42 and the upstream air duct 22, so as to facilitate the flow of air into the water receiving trough 421 and from the extension plate 422 to the evaporator 41.

[0072] In some embodiments, the water receiving tray 42 can be integrally formed or welded together; that is, the water receiving trough 421, the extension plate 422, and the abutment plate 423 can be integrally formed or welded together. Meanwhile, the water receiving tray 42 can be made of steel or plastic, etc.

[0073] Figure 7 yes Figure 1 A schematic diagram of the evaporator and heat transfer plate of an air-cooled freezer.

[0074] In some embodiments, see Figure 7 The evaporator 41 may be equipped with a heating tube 413, a finned body 414, and an evaporator tube 415. The evaporator tube 415 is disposed inside the finned body 414 and communicates with the compressor 80, allowing the heat exchange medium supplied by the compressor 80 to flow along the evaporator tube 415. Specifically, the evaporator tube 415 has multiple segments, and these multiple segments are mounted on the finned body 414 to increase the contact area between the evaporator tubes 415, thereby improving the heat exchange efficiency.

[0075] In some embodiments, heating tubes 413 are arranged on the outer peripheral wall of the fin body 414, that is, the heating tubes 413 are distributed circumferentially on the outer peripheral wall of the fin body 414, so that the heating tubes 413 can conduct heat to the fin body 414 and defrost it. When the heating tubes 413 heat and defrost the fin body 414, the circumferentially distributed heating tubes 413 can heat the fin body 414 simultaneously, thereby ensuring that the entire fin body 414 can be defrosted and avoiding incomplete defrosting of the fin body 414.

[0076] In some embodiments, the heating tube 413 can be made of aluminum, steel, or copper to improve its thermal conductivity. In this embodiment, the heating tube 413 is made of steel to increase its heating temperature and thus improve its defrosting efficiency on the fin body 414, ensuring that the fin body 414 can be completely defrosted.

[0077] Figure 8 yes Figure 1 A partial schematic diagram of an air-cooled freezer. Figure 9 yes Figure 1 Another partial schematic diagram of an air-cooled freezer. Figure 10 yes Figure 1 Another partial schematic diagram of an air-cooled freezer.

[0078] See Figure 3 , Figure 7 and Figure 8 The air-cooled freezer may also include a heat-conducting plate 50. The heat-conducting plate 50 is installed inside the air duct 22 and connected between the evaporator 41 and the fan 30.

[0079] In some embodiments, the heat-conducting plate 50 may include a first abutment surface 51 and a second abutment surface 52 connected together, with the first abutment surface 51 and the second abutment surface 52 arranged at an angle. In the airflow direction, the first abutment surface 51 is inclined from bottom to top, such that the inclination direction of the first abutment surface 51 is consistent with the inclination direction of the evaporation section 223 and the evaporator 41, thereby allowing the first abutment surface 51 to adhere to the top side of the fin body 414. Meanwhile, the second abutment surface 52 is used to mount the fan 30.

[0080] In some embodiments, the first contact surface 51 is attached to the top of the fin body 414 and is in contact with the heating tube 413. When the heating tube 413 heats and defrosts the fin body 414, the heat-conducting plate 50 contacts the heating tube 413 to conduct heat, and the heat-conducting plate 50 can conduct the heat of the heating tube 413 to the fan 30 so that the conducted heat can heat and defrost the fan 30, avoid the accumulation of frost around the fan 30, and thus ensure that the fan 30 can work normally.

[0081] In some embodiments, the heat-conducting plate 50 may be an aluminum plate, an iron plate, or a copper plate, so that the heat-conducting plate 50 can conduct the heat on the heating tube 413 to the fan 30 and defrost the fan 30.

[0082] In some embodiments, see Figure 8 , Figure 9 and Figure 10 The air-cooled freezer may also include insulation 60 and a housing 70.

[0083] The heat insulation component 60 is installed inside the air duct 22 and is located on the side of the air duct 22 facing the cooling room 21, so that the heat insulation component 60 can prevent the heat in the air duct 22 from convection with the heat in the cooling room 21.

[0084] In some embodiments, the heat insulation member 60 is used to install the heat-conducting plate 50, and the heat-conducting plate 50 is located on the side of the heat insulation member 60 away from the cooling chamber 21, thereby isolating the heat on the heat-conducting plate 50 and preventing the heat on the heat-conducting plate 50 from being transferred into the cooling chamber 21.

[0085] In some embodiments, the top of the evaporator 41 is positioned facing the heat insulation member 60, and the fan 30 is connected to the air duct 22 through the heat insulation member 60. Therefore, when the evaporator 41 is heated for defrosting, the heat insulation member 60 can isolate the heat on the evaporator 41, the heat-conducting plate 50, and the fan 30, preventing the heat during defrosting from affecting the interior of the cooling compartment 21.

[0086] In some embodiments, the thermal insulation element 60 may be made of asbestos, rock wool, plastic foam, glass fiber or polymer thermal insulation material to ensure the thermal insulation performance of the thermal insulation element 60.

[0087] In some embodiments, the housing 70 is mounted on the heat insulation member 60, and a ventilation cavity 71 for accommodating the fan 30 is formed between the housing 70 and the heat insulation member 60, allowing the fan 30 to be installed in the ventilation cavity 71. Simultaneously, the ventilation cavity 71 is open on one side facing the air outlet 222 of the air duct 22, forming an opening 74 that faces the air outlet 222, allowing the ventilation cavity 71 to connect to the air outlet 222. Furthermore, a ventilation opening 72 is provided on the side wall of the ventilation cavity 71, allowing the ventilation cavity 71 to connect to the air inlet 221 of the air duct 22. The ventilation opening 72 is also provided corresponding to the fan 30, enabling the fan 30 to drive the air within the air duct 22 to flow along the ventilation cavity 71 when operating, thereby improving airflow efficiency.

[0088] It should be noted that in some embodiments, because the diameter of the fan 30 is larger than the diameter of the duct 22, the fan 30 cannot be coaxially arranged with the duct 22. Therefore, a cover 70 is provided inside the duct 22, forming a ventilation cavity 71 between the cover 70 and the side wall or heat insulation component 60 of the duct 22. Ventilation holes 72 and openings 74 are provided on the side wall of the ventilation cavity 71 to change the path of the duct 22 and to make the ventilation holes 72 face the fan 30. This ensures that when the fan 30 is working, the direction of airflow from the duct 22 to the fan 30 is consistent with the axis of the fan 30, which can maximize the efficiency of the fan 30 in driving airflow and thus improve the efficiency of airflow within the duct 22.

[0089] In some embodiments, see Figure 6 , Figure 8 and Figure 10 A sealing portion 73 may be protruding from the outer wall of the housing 70. Simultaneously, the sealing portion 73 and the vent 72 are located on the same side wall of the housing 70. The sealing portion 73 abuts against the inner wall of the air duct 22, and in the direction of airflow, the sealing portion 73 is located downstream of the vent 72, thereby enabling the sealing portion 73 to seal the space between the outer wall of the housing 70 and the inner wall of the air duct 22, preventing air leakage. Furthermore, in the direction of airflow, the sealing portion 73 is located downstream of the vent 72, allowing air in the air duct 22 to flow from the vent 72 into the ventilation chamber 71, and then from the opening of the ventilation chamber 71 to the air outlet 222.

[0090] In some embodiments, the cover 70 may be made of plastic or metal.

[0091] In summary, the air-cooled freezer includes a cabinet 10, a refrigeration chamber 20, a fan 30, an evaporator 41, and a drip tray 42. The refrigeration chamber 20 is installed within the installation space 11 of the cabinet 10. The refrigeration chamber 20 contains a refrigeration compartment 21, and an air duct 22 is formed on the refrigeration chamber 20, connecting the two ends of the refrigeration compartment 21. Both the fan 30 and the evaporator 41 are installed within the air duct 22. When the fan 30 drives the air in the refrigeration compartment 21 to flow along the air duct 22, the evaporator 41 can exchange heat with the air and lower its temperature, thereby completing the cooling of the refrigeration compartment 21.

[0092] Meanwhile, a water receiving tray 42 is formed on the air duct 22, and a downwardly recessed water receiving groove 421 is formed. The bottom edge of the front air inlet 411 of the evaporator 41 is located above the water receiving groove 421, and there is a gap 417 between the bottom edge of the front air inlet 411 and the bottom wall of the water receiving groove 421. The gap 417 can connect to the bottom air inlet 416. When the front air inlet 411 is blocked due to frost, the air in the air duct 22 can flow along the gap 417, and flow into the evaporator 41 through the bottom air inlet 416, and then flow out from the rear air outlet of the evaporator 41, thereby ensuring the smooth flow of the air duct 22.

[0093] Furthermore, the bottom edge of the rear air outlet 412 is located outside the water collection tank 421 and abuts against the bottom wall of the air duct 22, thereby blocking the connection between the water collection tank 421 and the air duct 22 downstream of the evaporator 41, preventing air in the water collection tank 421 from flowing directly into the air duct 22 downstream of the evaporator 41. Therefore, the air flowing along the water collection tank 421 can flow into the evaporator 41 from the bottom air inlet 416, allowing the evaporator 41 to continue exchanging heat with the air even after the front air inlet 411 is blocked, ensuring the continuous operation of the evaporator 41 and thus guaranteeing the overall cooling effect of the freezer.

[0094] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A type of air-cooled freezer, characterized in that, The air-cooled freezer includes: The cabinet has an installation space inside; A refrigeration box is installed in the installation space. A refrigeration chamber is provided inside the refrigeration box. An air duct is formed on the refrigeration box, and the two ends of the air duct are connected to the refrigeration chamber. A fan is installed inside the air duct, and the fan is used to drive the air in the refrigeration room to flow along the air duct; A water receiving tray is formed on the air duct, and the water receiving tray has a downwardly recessed water receiving groove; An evaporator is installed inside the air duct and above the water receiving tank. The evaporator is used to exchange heat with the air flowing through the air duct. The evaporator includes a front air inlet, a bottom air inlet, and a rear air outlet. There is a gap between the bottom edge of the front air inlet and the bottom wall of the water receiving tank. The gap is connected to the bottom air inlet. The air flows into the evaporator through the front air inlet and the bottom air inlet, and is discharged from the evaporator through the rear air outlet.

2. The air-cooled freezer according to claim 1, characterized in that, The air duct includes an evaporation section, which is inclined from bottom to top in the direction of air flow. The evaporator is installed in the evaporation section, and the axis between the front air inlet and the rear air outlet is inclined from bottom to top in the direction of air flow.

3. The air-cooled freezer according to claim 1, characterized in that, In the direction of air flow, the plane where the front air inlet is located is inclined from top to bottom.

4. The air-cooled freezer according to claim 1, characterized in that, The water receiving tray includes an extension plate and an abutment plate. The extension plate protrudes and extends from the edge of the water receiving trough toward the downstream direction of the water receiving tray. The extension plate is spaced apart from the bottom air inlet. The abutment plate is connected to the side of the extension plate away from the water receiving trough and abuts against the bottom edge of the rear air outlet.

5. The air-cooled freezer according to claim 4, characterized in that, The abutment plate is inclined from bottom to top in the direction of air flow.

6. The air-cooled freezer according to claim 1, characterized in that, The evaporator is provided with a heating tube, a finned body and an evaporation tube. The evaporation tube is located inside the finned body and the heating tube is arranged on the outer peripheral wall of the finned body.

7. The air-cooled freezer according to claim 6, characterized in that, It also includes a heat-conducting plate, which is installed in the air duct. The heat-conducting plate includes a first abutting surface and a second abutting surface connected together. The first abutting surface and the second abutting surface are set at an angle. In the direction of air flow, the first abutting surface is inclined from bottom to top and is attached to the top side of the fin body. The second abutting surface is used to install the fan.

8. The air-cooled freezer according to claim 7, characterized in that, It also includes a heat insulation component, which is installed inside the air duct and located on the side of the air duct facing the cooling room. The heat insulation component is used to install the heat-conducting plate, and the heat-conducting plate is located on the side of the heat insulation component away from the cooling room. The top of the evaporator is positioned facing the heat insulation component, and the fan is connected to the air duct through the heat insulation component.

9. The air-cooled freezer according to claim 8, characterized in that, It also includes a cover, which is mounted on the heat insulation component. A ventilation cavity for accommodating the fan is formed between the cover and the heat insulation component. The ventilation cavity is open on one side facing the air outlet of the air duct. A vent is provided on the side wall of the ventilation cavity so that the ventilation cavity can connect to the air inlet of the air duct. The vent is provided corresponding to the fan.

10. The air-cooled freezer according to claim 9, characterized in that, A sealing part is provided on the outer side wall of the machine cover. The sealing part and the vent are located on the same side wall of the machine cover, and in the direction of air flow, the sealing part is located downstream of the vent. The sealing part abuts against the inner wall of the air duct.

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