Air-cooled refrigerator

Abstract

The technical scheme belongs to the technical field of refrigerators and specifically relates to an air-cooled refrigerator, which comprises a refrigerator main body, a freezing chamber is arranged in the refrigerator main body, a refrigerating device is arranged on the refrigerator main body, an air outlet is arranged on the top of the refrigerating device and faces the refrigerator door, an air return is arranged on the bottom of the refrigerating device and faces the freezing chamber, a wind guide pipeline is arranged on the inner side wall of the freezing chamber, the wind guide pipeline is connected to the refrigerating device through a first air guide opening, an air exhaust pipeline is arranged on the inner side wall of the freezing chamber near the top, the wind guide pipeline is connected to the air exhaust pipeline through a second air guide opening, the air exhaust pipeline has a cold air outlet, the cold air outlet cooperates with the air outlet to respectively send cold air into the spaces on the two sides of the freezing chamber, the cold air outlet and the air outlet are oppositely arranged in the air supply direction, the air is oppositely sent to the two sides of the middle beam, the two air flows meet and diffuse in the middle area of the freezing chamber, the blockage of the middle beam to the cold air flow path is overcome, the cold air cools the articles from top to bottom, the cold air is sucked back through the air return, and the circulation is realized, the refrigeration effect of the spaces on the two sides is optimized, and the overall refrigeration efficiency is improved.

Description

Technical Field

[0001] This technical solution relates to the field of freezer technology, specifically to a type of air-cooled freezer. Background Technology

[0002] A freezer is a storage device that uses low temperatures to refrigerate food and other items. A freezer typically includes a cabinet and matching doors, as well as a refrigeration system and a temperature control system. The doors prevent cold air from escaping to maintain the cooling effect inside the cabinet. The cabinet is characterized by its large capacity and flexible use of space.

[0003] For example, Chinese patent CN116182450A discloses an air-cooled freezer that realizes internal circulation of cold air, including a cabinet and a refrigeration device for outputting cold air. The cabinet has an equipment installation area and a storage area. The refrigeration device is installed in the equipment installation area. The top surface of the cabinet has multiple parallel-arranged guide channels that extend linearly from the equipment installation area to the storage area. The top of the refrigeration device has a cold air outlet, and the bottom of the refrigeration device has a return air vent. Cold air is blown from the cold air outlet at the top to the top of the cabinet and flows along the guide channels to the opposite side, and then flows back into the refrigeration device through the return air vent at the bottom.

[0004] Currently, due to storage needs, freezers on the market expand their internal storage area, such as double-door freezers. However, the refrigeration unit installed on one side of the cabinet delivers low-temperature cold air from the cold air outlet. Due to pressure differences or path resistance (such as the central beam supporting the hinges of the two cabinet doors, excessive stacking of items, or improper methods), the cold air cannot be effectively distributed to the far end of the cabinet. As a result, the air does not fully flow through the entire storage space and exchange heat with the items. Instead, it is directly drawn back to the return air vent of the refrigeration unit, resulting in poor cooling effect. This leads to frequent starts of the refrigeration compressor, increased energy consumption, and higher electricity costs. Utility Model Content

[0005] This technical solution aims to improve the problems of low refrigeration efficiency and high energy consumption caused by uneven air distribution by providing an air-cooled freezer.

[0006] The purpose of this technical solution is achieved as follows: A type of air-cooled freezer, comprising: The main body of the freezer has a freezer compartment inside; A refrigeration unit is installed inside the main body of the freezer. The top of the refrigeration unit has an air outlet facing the door, and a return air outlet facing the freezer compartment is located near the bottom. An air duct is disposed on the inner wall of the freezer compartment, and the air duct is connected to the refrigeration unit through an air duct outlet; and An exhaust duct is installed on the inner wall of the freezer compartment near the top. The air guide duct is connected to the exhaust duct through an air guide port. The exhaust duct has a cold air outlet, which cooperates with the air outlet to deliver cold air to the spaces on both sides of the freezer compartment. The cold air outlet and the air outlet are arranged in opposite directions.

[0007] Through the above technical solution, when a wind-cooled freezer is in normal use, the cold air generated by the refrigeration unit is first blown out from the top air outlet. At the same time, part of the cold air enters the air duct set in the inner side wall of the freezer through the air guide port one, and is then split into the exhaust duct through the air guide port two. Since the cold air outlet of the exhaust duct and the air outlet of the refrigeration unit are set in opposite directions, a pattern of relative air supply from both sides of the central beam is formed. The two streams of cold air converge and diffuse in the middle area of ​​the freezer, overcoming the obstruction of the cold air flow path by the central beam. After the cold air is evenly distributed from top to bottom to cool the items, it is finally drawn back by the refrigeration unit through the return air vent near the bottom of the freezer, completing the circulation, optimizing the cooling effect of the opposite space, and improving the overall cooling efficiency.

[0008] Preferably, the exhaust duct has multiple cold air outlets arranged in accordance with the direction of cold air flow inside it; The exhaust duct is provided with an exhaust channel, and a flow guide plate is installed in the exhaust channel. The flow guide plate has a flow guide arc surface, and the direction of the arc surface makes the width of the exhaust channel gradually decrease in the direction of cold air flow.

[0009] With the above technical solution, when the cold air enters the exhaust duct from the second air guide, it is constrained by the narrowing channel structure, and the airflow velocity gradually increases as the channel width narrows. The accelerated cold air is continuously sent out through each cold air outlet to balance the cooling effect of the cold air outlets at different locations.

[0010] Preferably, each of the cold air outlets includes several air passage holes, and the number of air passage holes at each cold air outlet generally increases along the direction of cold air flow in the exhaust duct.

[0011] With the above technical solution, each cold air outlet is equipped with an air passage hole. As the cold air flows, the number of air passage holes in the cold air outlet can be gradually increased, thereby increasing the air outlet area of ​​the cold air outlet to further expand the air volume, balance and offset the flow loss, compensate for the air pressure loss and temperature rise during the airflow process in the duct, balance the cooling intensity at the far end, and further optimize the cooling effect of each cold air outlet to tend to be balanced.

[0012] Preferably, the main body of the freezer includes a cabinet body and two matching cabinet doors, which are mounted on the cabinet body by hinges. The cabinet body is provided with a central beam, and the refrigeration device and the exhaust duct are located on both sides of the central beam. The cold air outlet is a grille structure with multiple fan blades. The cold air outlet is divided into multiple matching air passages by multiple fan blades. The fan blades are inclined towards the cabinet door to guide and rectify the flowing air.

[0013] Through the above technical solution, the freezer adopts a structure in which the double doors are hinged to the cabinet body. The cold air outlet of the exhaust duct is designed as a grille structure, which has multiple fan blades inclined towards the cabinet door inside. The air outlet is divided into directional airflow holes. The inclined fan blades actively guide and rectify the airflow, and concentrate the airflow towards the cabinet door. The rectified cold air and the airflow from the air outlet in the refrigeration unit converge stably in the middle beam area, which suppresses the loss of cold air when the door is opened. At the same time, it enhances the cold air coverage near the cabinet door, avoids condensation and freezing in this area due to uneven temperature, and thus prevents the cabinet door from being difficult to open due to ice.

[0014] Preferably, the fan blades at the bottom of one or more of the cold air outlets are inclined toward the direction of the freezer chamber.

[0015] With the above technical solution, when cold air passes through the cold air outlet, the upper fan blades maintain airflow towards the cabinet door, while the lower inclined fan blades actively guide the airflow to the depth area of ​​the freezer compartment, replenishing the cold air in the freezer compartment, forming a layered airflow effect, and improving utilization.

[0016] Preferably, the cold air outlet is provided with one or more baffles, the baffles protruding from the freezer chamber and perpendicular to the air delivery direction of the second air guide.

[0017] Through the above technical solution, the baffle protrudes vertically from the air supply path, forming a physical turbulence barrier, forcibly dispersing the concentrated airflow. The airflow can be gathered and directed to each air passage under the restriction and guidance of the baffle, and blown out evenly from each air outlet, thereby avoiding airflow dispersion and ensuring the uniformity and strength of the blown airflow.

[0018] Preferably, the air duct is provided with an air supply port, and the position of the air supply port is offset from the position of the central beam towards the side where the exhaust duct is located.

[0019] Through the above technical solution, the initial low-temperature cold air sent out from the cold air outlet gradually sinks and its cooling efficiency decreases as it moves towards the central beam. By setting up a makeup air inlet on the side of the central beam in the exhaust duct, some of the low-temperature cold air that has not yet completely decayed is actively discharged to compensate for the low-temperature fresh air, enhance the cooling intensity at the far end, and improve the cold air circulation efficiency.

[0020] Preferably, the cabinet door is provided with multiple air guide ridges, which are arranged side by side on the inner top surface of the cabinet door facing the freezer compartment, and the cabinet door is formed with multiple air guide grooves corresponding to the cold air outlets through the air guide ridges; The bottom of the guide channel has a flow-guiding arc surface, and the direction of the arc surface makes the depth of the guide channel gradually increase towards the middle beam.

[0021] With the above technical solution, when the cold air flows along the top of the cabinet door, the gradually expanding arc surface generates the Venturi effect. The airflow enters the shallow groove area and accelerates to form negative pressure adsorption, and then slows down and diffuses in the deep groove area, thereby improving the efficiency of cold air circulation.

[0022] Preferably, the central beam is provided with a plurality of guide holes that match the guide groove.

[0023] Through the above technical solution, the cold air can be guided by the guide channel and then enter the other side area through the guide hole, optimizing the flow of cold air and improving the overall cooling effect.

[0024] Preferably, the freezer compartment has an installation groove along its side wall, and the air guide pipe and the exhaust pipe are both embedded and fixed in the installation groove.

[0025] With the above technical solution, after the pipe is embedded in the installation groove, its outer contour is relatively flush with the inner wall of the freezer compartment, so as to reduce the encroachment on the internal space of the freezer compartment and optimize the space volume.

[0026] The key and beneficial technical effects of this technical solution compared to existing technologies are: 1. This technical solution uses the cold air outlet of the exhaust duct and the air outlet of the refrigeration unit to send air in opposite directions, forming a pattern of air supply from both sides of the central beam. This allows the two streams of cold air to converge and diffuse evenly in the middle of the freezer compartment, effectively overcoming the obstruction of airflow by the central beam and improving the overall refrigeration efficiency and cooling effect inside the cabinet.

[0027] 2. This technical solution uses different numbers of air passages between each cold air outlet, and sets a cold air outlet with denser air passages at the far end of the exhaust duct. This compensates for the air pressure loss and temperature rise in the duct, balances the cooling intensity of the air outlets in different areas, and ensures that the overall air supply and cooling effect of each cold air outlet are uniform.

[0028] 3. This technical solution uses a deflector plate inside the exhaust duct. The deflector plate's curved surface causes the width of the exhaust duct to gradually decrease in line with the direction of cold air flow. The airflow gradually accelerates during the flow process, increasing the wind speed and flow rate at the far end outlet, thereby balancing the air delivery effect of each cold air outlet and further improving the uniformity of cooling. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a partial explosion diagram of this embodiment; Figure 3 This is a partial cross-sectional view of this embodiment; Figure 4 This is a partial structural diagram of the cabinet door and the central beam in this embodiment; Figure 5 This is a partial structural diagram of the refrigeration device, air duct, and exhaust duct in this embodiment; Figure 6 This embodiment Figure 5 Schematic diagram of a partial explosion; Figure 7 This is a schematic diagram of the overall structure of the exhaust duct in this embodiment; Figure 8 This is a schematic diagram of the cabinet structure in this embodiment, with the cabinet door, air duct, and exhaust duct concealed.

[0030] Attached reference numerals: 1. Freezer body; 101. Cabinet body; 102. Cabinet door; 2. Freezer compartment; 3. Refrigeration unit; 4. Air outlet; 5. Air return outlet; 6. Air duct; 61. Air duct one; 62. Air duct two; 7. Exhaust duct; 8. Cold air outlet; 801. Air passage hole; 802. Fan blade; 9. Exhaust duct; 10. Air guide plate; 11. Air guide arc surface; 12. Center beam; 13. Baffle plate; 14. Air supply port; 15. Air guide groove; 16. Air guide hole; 17. Mounting groove; 18. Air guide ridge; 19. Air guide arc surface. Detailed Implementation

[0031] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0032] Example: See Figure 1 and Figure 2 A type of air-cooled freezer includes a freezer body 1, which includes a cabinet 101 and two matching cabinet doors 102. The two cabinet doors 102 are hinged to the upper part of the cabinet 101. The freezer body 1 has a freezer compartment 2 inside, which has a corresponding frozen storage space. By opening any one or both cabinet doors 102, the freezer compartment 2 can be opened to store or take out items.

[0033] The cabinet 101 is provided with a central beam 12, which is mounted at the opening at the upper end of the cabinet 101 and is positioned corresponding to the position of the hinge. The two ends of the central beam 12 are respectively fixed to the opposite side walls of the opening of the cabinet 101 along the width direction, and are used to provide a supporting base for the hinge when the cabinet door 102 is in use.

[0034] See Figure 3It also includes a refrigeration device 3, which is existing technology and will not be described in detail here. For details, please refer to Chinese patent CN116182450A, which discloses an air-cooled freezer that realizes internal circulation of cold air. The refrigeration device 3 usually includes a shell, a fan, a condenser tube, etc. Refrigerant flows inside the condenser tube. The condenser tube is partially wrapped around the outside of the freezer compartment and can absorb the heat of its internal space. The fan runs to accelerate the internal air circulation.

[0035] The housing of the refrigeration unit 3 has an air outlet 4 and an air return vent 5. The air outlet 4 is located on the top end face of the refrigeration unit 3. This end face is an inclined surface that slopes towards the middle beam 12. The air outlet 4 outputs cold air towards the inner top surface of the adjacent cabinet door 102. The air return vent 5 is located on the refrigeration unit 3 near the bottom of the freezer compartment 2. Its opening faces into the freezer compartment 2 and is used to draw in cold air. Both the air outlet 4 and the air return vent 5 can be equipped with air guide plates, which serve to guide airflow and block debris.

[0036] See Figure 5 , Figure 6 and Figure 8 It also includes an air guide duct 6 and an exhaust duct 7. The freezer compartment 2 has an installation groove 17 along its inner wall. The installation groove 17 is L-shaped. The air guide duct 6 is embedded and fixed in the groove of the installation groove 17 along the length of the freezer compartment 2. Specifically, the air guide duct 6 has multiple protruding lugs on both sides, each lug having a connecting hole 1. The inner wall of the freezer compartment 2 has multiple matching bolt holes 1 at corresponding positions. The bolts are passed through the connecting holes 1 and screwed into the corresponding bolt holes 1 to achieve fixation. The exhaust duct 7 is embedded and fixed in the groove of the installation groove 17 along the width of the freezer compartment 2. Specifically, the exhaust duct 7 has a connecting plate extending around its periphery. The connecting plate has multiple connecting holes 2. The inner wall of the freezer compartment 2 has multiple matching bolt holes 2 corresponding to the connecting holes 2. The bolts are passed through the connecting holes 2 and screwed into the corresponding bolt holes 2 to achieve fixation.

[0037] The air duct 6 has an air guide port 1 61 and an air guide port 2 62 at both ends. The end of the air duct 6 with air guide port 1 61 is connected to the side wall of the refrigeration unit 3 and communicates with the interior of the refrigeration unit 3 through air guide port 1 61. The air duct 6 extends along the cold mounting groove 17. The other end of the air duct 6 with air guide port 2 62 is inserted into and fixed to the end of the exhaust duct 7 and communicates with the interior of the exhaust duct 7 through air guide port 2 62. Part of the cold air generated by the refrigeration unit 3 enters the air duct 6 through air guide port 1 61, is transported along the duct, and flows into the exhaust duct 7 through air guide port 2 62. The exhaust duct 7 is arranged perpendicular to the air duct 6. The cold air flow discharged from air guide port 2 62 flows along the length of the exhaust duct 7.

[0038] See Figure 6 and Figure 7 The exhaust duct 7 has a cold air outlet 8, which is located on the side wall of the exhaust duct 7 near the freezer compartment 2. There are multiple cold air outlets 8, which are arranged at intervals along the direction of cold air flow in the exhaust duct 7. The exhaust duct 7 has an exhaust trough 9, and a guide plate 10 is installed in the exhaust trough 9. The width of the guide plate 10 is adapted to the depth of the exhaust trough 9. The guide plate 10 has a guide arc surface 11. The direction of the arc surface makes the width of the exhaust trough 9 gradually narrow along the direction of cold air flow in the exhaust duct 7. When the cold air enters the exhaust duct 7 from the air guide port 62, it is constrained by the gradually narrowing trough structure. The airflow velocity of the cold air gradually increases as the trough width narrows and is continuously sent out through each cold air outlet 8, thereby achieving a balance in the cooling effect of each cold air outlet 8 at different locations.

[0039] Each cold air outlet 8 is a grille structure with multiple fan blades 802, which are divided into multiple matching air passages 801. Each fan blade 802 is inclined towards the cabinet door 102 to guide and rectify the flowing air before concentrating the airflow towards the cabinet door 102. The fan blades at the bottom of one or more cold air outlets 8 are inclined towards the freezer compartment to concentrate the airflow towards the freezer compartment 2. Together with the air outlet 4 on the other side, the cold airflows on both sides converge stably in the area of ​​the middle beam 12, thereby suppressing the escape of cold air when the two cabinet doors 102 are opened.

[0040] In this embodiment, the number of air passage holes of the upstream cold air outlet 8 along the cold air flow direction of the exhaust duct 7 is less than or equal to the number of air passage holes of the adjacent downstream cold air outlet 8. This embodiment shows the case where four cold air outlets 8 are arranged in sequence. The first cold air outlet 8 near the second air guide 62 and the adjacent second cold air outlet 8 have the same number of air passage holes 801. The third cold air outlet 8 and the fourth cold air outlet 8, which are located further away, have the same number of air passage holes 801. The number of air passage holes 801 of the third cold air outlet 8 is greater than the number of air passage holes 801 of the second cold air outlet 8. The lower fan blades 802 of the third and fourth cold air outlets 8 are inclined towards the inside of the freezer compartment 2.

[0041] When cold air is delivered from air guide vent 2 62, the initial wind speed is the fastest. The cold air flows along the exhaust duct 9, and each time it passes through a cold air outlet 8, a portion of the air volume is diverted, reducing the air volume that continues to advance in the main air duct. Furthermore, the increased distance the cold air travels also consumes wind energy. These two factors combined cause the wind pressure and wind speed within the duct to gradually decrease, affecting the air output effect. This application addresses the issue of varying numbers of air passages 801. The first two air passages 801 at the initial end have relatively fewer numbers, resulting in sufficiently high wind pressure. Even with a smaller flow area, this ensures effective air volume and wind speed. The two rear air vents 801 at the far end have a relatively larger number, increasing the flow area (number of air vents 801) to compensate for the air pressure attenuation caused by diversion and friction, and to balance the air volume of each outlet. This makes the final air output effect of the four outlets more uniform, avoiding strong winds at the near end and no wind at the far end, further improving the uniformity of airflow distribution and cooling effect. Alternatively, the number of air vents 80 at each cold air outlet 8 can be adjusted according to the actual effect. The final calibration is carried out on-site based on the measured temperature and wind speed to obtain a better cooling effect and uniform air output of multiple cold air outlets 8.

[0042] Each cold air outlet 8 is provided with one or more baffles 13. In this embodiment, it is shown that each cold air outlet 8 is provided with two baffles 13. The two baffles 13 are arranged parallel to each other and are perpendicular to the air delivery direction of the air guide 62. One side of the baffle 13 protrudes out of the freezer chamber 2 and the other side protrudes out of the exhaust duct 9.

[0043] See Figure 3 and Figure 4 Each cabinet door 102 is provided with multiple guide ridges 18, specifically three guide ridges 18, which are arranged side by side on the inner top surface of the cabinet door 102 facing the freezer compartment 2. A guide groove 15 is formed between any two adjacent guide ridges 18, and a guide groove 15 is also formed between the guide ridges 18 and the edge protrusion of the inner top surface of the cabinet door 102. Four guide grooves 15 are formed, and the bottom of each guide groove 15 has a guide arc surface 19, the direction of which makes the groove depth of the corresponding guide groove 15 face towards the direction of the flow. The central beam 12 gradually deepens in direction and has multiple guide holes 16 running through it. The positions of the guide holes 16 correspond one-to-one with the positions of multiple guide slots 15. The cold air delivered from the air outlet 4 and the cold air outlet 8 flows along each guide slot 15. The airflow enters the shallow slot area and accelerates to form a negative pressure adsorption. It slows down and diffuses in the deep slot area, improving the cold air circulation efficiency. The cold air can enter the other side area through the guide holes 16, reducing the obstruction of the cold air by the central beam 12, optimizing the cold air flow path, and further improving the overall cooling effect.

[0044] The exhaust duct 7 is provided with an air inlet 14, which is located on the side of the middle beam 12 near the exhaust duct 7. The structure of the air inlet 14 is similar to that of the cold air outlet 8. The upper fan blade 802 is inclined towards the cabinet door 102, and the lower fan blade 802 is inclined towards the inside of the freezer compartment 2. The air inlet 14 is provided with a baffle 13. The initial low-temperature cold air sent out by the cold air outlet 8 gradually sinks and its cooling efficiency decreases as it flows towards the middle beam 12. The cooling effect of the cold air near the middle beam 12 is insufficient. The air inlet 14 actively exports some low-temperature cold air to compensate for the cold air sent out by the cold air outlet 8.

[0045] Because the external temperature is high when the cabinet door 102 is opened, condensation easily forms at the opening of the cabinet body 101. After the cabinet door 102 is closed again, the condensation solidifies, making it difficult to separate the cabinet door 102 from the cabinet body 101. To address this, air is supplied from the air outlet 4 and the cold air outlet 8 in opposite directions, and cold air is output from the air supply outlet 14. All three outlets simultaneously blow cold air towards the cabinet door 102. The cold air flows from top to bottom, cooling the items. It is then drawn back by the refrigeration unit 3 through the return air outlet 5. The drawn-in cold air is recooled in the condenser area and then sent out again from the air outlet 4, the cold air outlet 8, and the air supply outlet 14, forming a continuous cooling airflow. This continuously replenishes the cold air at the opening of the cabinet body 101, effectively reducing condensation and enabling the cabinet door 102 and the cabinet body 101 to open smoothly.

[0046] The specific work process of this plan is as follows: This technical solution utilizes the cooling device 3 to generate cold air, which is first blown out from its top air outlet 4. Simultaneously, some of the cold air enters the air duct 6 located on the inner wall of the freezer compartment 2 through the first air guide 61, and some of the cold air is sent out from the make-up air outlet 14. The remaining cold air is diverted to the exhaust duct 7 through the second air guide 62. Based on the fact that the cold air outlet 8 of the exhaust duct 7 and the air outlet 4 of the cooling device 3 are set in opposite directions, a pattern of relative air supply from both sides of the central beam 12 is formed. The two streams of cold air converge and diffuse in the middle area of ​​the freezer compartment 2, overcoming the obstruction of the cold air flow path by the central beam 12. After the cold air is evenly distributed from top to bottom to cool the items, it is finally drawn back by the cooling device 3 through the return air outlet 5 near the bottom of the freezer compartment 2, completing the circulation, optimizing the cooling effect of the opposite space, and improving the overall cooling efficiency.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

Claims

1. A type of air-cooled freezer, characterized in that, include: The main body of the freezer (1) has a freezer compartment (2) inside; A refrigeration device (3) is installed inside the main body (1) of the freezer. The top of the refrigeration device (3) is provided with an air outlet (4) facing the cabinet door, and a return air outlet (5) facing the freezer compartment (2) is provided near the bottom. An air duct (6) is disposed on the inner wall of the freezer compartment (2), and the air duct (6) is connected to the refrigeration unit (3) through an air duct port (61); and An exhaust duct (7) is installed on the inner wall of the freezer chamber (2) and is located near the top of the freezer chamber (2). The air guide duct (6) is connected to the exhaust duct (7) through the air guide port (62). The exhaust duct (7) has a cold air outlet (8), which cooperates with the air outlet (4) to deliver cold air to the spaces on both sides of the freezer chamber (2). The cold air outlet (8) and the air outlet (4) are arranged in opposite directions.

2. The air-cooled freezer according to claim 1, characterized in that: The exhaust duct (7) has multiple cold air outlets (8) arranged in accordance with the direction of cold air flow inside it; The exhaust duct (7) is provided with an exhaust trough (9), and a flow guide plate (10) is installed in the exhaust trough (9). The flow guide plate (10) has a flow guide arc surface (11), and the direction of the arc surface makes the width of the exhaust trough (9) gradually decrease in relation to the direction of cold air flow.

3. The air-cooled freezer according to claim 2, characterized in that: Each of the cold air outlets (8) includes several air passage holes (801). Along the direction of cold air flow in the exhaust duct (7), the number of air passage holes (801) of each cold air outlet (8) generally shows an increasing trend.

4. The air-cooled freezer according to claim 3, characterized in that: The main body (1) of the freezer includes a cabinet (101) and two matching cabinet doors (102). The two cabinet doors (102) are mounted on the cabinet (101) by hinges. The cabinet (101) is provided with a central beam (12). The refrigeration device (3) and the exhaust duct (7) are located on both sides of the central beam (12). The cold air outlet (8) is a grille structure with multiple fan blades (802). The cold air outlet (8) is divided into multiple matching air passage holes (801) by multiple fan blades (802). The fan blades (802) are inclined towards the cabinet door (102) to guide and rectify the flowing air.

5. A wind-cooled freezer according to claim 4, characterized in that: in, One or more of the cold air outlets (8) have fan blades (802) located at the bottom that are inclined toward the freezer compartment (2).

6. A wind-cooled freezer according to claim 4, characterized in that: The cold air outlet (8) is provided with one or more baffles (13), the baffles (13) protruding from the freezer chamber (2) and the baffles (13) being perpendicular to the air delivery direction of the second air guide (62).

7. A wind-cooled freezer according to claim 4, characterized in that: The air duct (6) is provided with an air supply port (14), and the position of the air supply port (14) is biased towards the side of the exhaust duct (7) relative to the position of the central beam (12).

8. A wind-cooled freezer according to claim 4, characterized in that: The cabinet door (102) is provided with multiple guide ridges (18), which are arranged side by side on the inner top surface of the cabinet door (102) facing the freezer compartment (2). The cabinet door (102) is formed with multiple guide grooves (15) corresponding to the cold air outlet (8) through the guide ridges (18). The bottom of the guide channel (15) has a guide arc surface (19), and the direction of the arc surface makes the depth of the guide channel (15) gradually increase towards the middle beam (12).

9. A wind-cooled freezer according to claim 8, characterized in that: The central beam (12) is provided with a plurality of guide holes (16) corresponding to the guide groove (15).

10. A wind-cooled freezer according to claim 1, characterized in that: The freezer compartment (2) has an installation groove (17) along its side wall, and the air guide pipe (6) and the exhaust pipe (7) are both embedded and fixed in the installation groove (17).

Images