A freezer heat dissipation mechanism

Abstract

The present invention relates to the technical field of freezer heat dissipation, and specifically to a freezer heat dissipation mechanism, which includes a heat dissipation box body. The heat dissipation box body is a hollow structure with an open front end. A middle partition is arranged in the middle of the hollow structure of the heat dissipation box body. Exhaust grilles and air intake grilles are respectively arranged on the upper and lower sides of the front end of the heat dissipation box body. A deflector is installed on the rear side of the middle partition. The deflector is used to conduct the air entering from the lower side of the front end of the heat dissipation box body and discharge it from the upper side of the front end of the heat dissipation box body. The air guiding member is an exhaust fan, and a sealing member is connected in the through groove. The present invention is installed at the bottom of the freezer in a plug-in manner. By using the air guiding member as the power component for wind conduction, the external air enters from the lower side of the front end of the heat dissipation box body, and then is controlled to be conducted to the upper side of the rear end of the heat dissipation box body and then conducted to the front side for discharge under the guidance of the deflector. In addition, through the deflector and the transfer partition, the air can be more easily mixed with the hot air discharged from the freezer, increasing the heat emission effect.

Description

Technical Field

[0001] The present invention relates to the technical field of freezer heat dissipation, and specifically to a freezer heat dissipation mechanism. Background Art

[0002] During the refrigeration process of a freezer, the high-temperature and high-pressure refrigerant is cooled into a liquid state by a condenser. During this process, the condenser releases a large amount of hot air. In traditional freezers, the condenser is arranged on the panel of the rear side wall, and the hot air released by the condenser is discharged through the air vents opened on the rear side wall or the bottom of the freezer.

[0003] However, since most freezers are placed with their rear sides against the wall, the freezer's refrigeration system temperature will rise due to slow heat dissipation of the hot air, affecting the overall service life of the freezer. At the same time, the air inlet of the freezer will also have too much air dust or debris, which will affect the safe and stable operation of the freezer's refrigeration system.

[0004] In response to the above problems, the utility model patent with the publication number CN218328832U discloses a cryogenic freezer heat dissipation device. This technical solution sets the radiator in the heat dissipation frame and movably sets the heat dissipation frame at the bottom of the freezer body, which is beneficial to pulling out the heat dissipation frame from the bottom of the freezer body when maintenance is needed, so as to facilitate the maintenance of the radiator inside the heat dissipation frame. In addition, the utility model patent with the publication number CN220454046U discloses a dust removal device for the heat dissipation port of a commercial freezer. This technical solution discharges and blows out the hot air from the air outlet inside the freezer body, causing the wind force to drive the fan blade to rotate, and the fan blade drives the rotating shaft to rotate. The rotating shaft drives the second bevel gear to rotate, causing the second bevel gear to drive the first bevel gear to rotate, and driving the rotating rod to rotate. The rotating rod drives the threaded rod to rotate synchronously through the pulley and the transmission belt. When the threaded rod rotates, it drives the moving plate to move reciprocally, and the moving plate drives the push plate to move, thereby scraping and removing dust from the dust-proof plate.

[0005] However, the above technical solutions still have the following technical problems: First, although the heat dissipation frame in the technical solution with the publication number CN218328832U is movably connected to the bottom of the freezer, there is no necessary sealed connection between the heat dissipation frame and the exhaust air outlet of the freezer. Moreover, after the heat dissipation frame is placed, it is relatively close to the ground, making it difficult to be pulled out from the bottom of the freezer. In addition, the external air and the hot air discharged from the freezer exhaust air outlet cannot be evenly mixed, and when the heat dissipation frame absorbs external air, it is easy to suck a large amount of dust and other sundries on the ground into the heat dissipation frame, thus affecting the use effect of the freezer heat dissipation system. Second, although the technical solution with the publication number CN220454046U is provided with a dust-proof plate, the driving force of the wind discharged through the freezer exhaust air outlet to drive the fan blades is not sufficient to drive the above multi-stage transmission. Moreover, the dust-proof plate is mostly made of paper materials, and it is easy to be damaged by scraping. In addition, since the dust-proof plate in this technical solution is arranged outside, the freezer will also be affected by dust and other sundries when it is not working. In addition, it is relatively cumbersome to replace the dust-proof plate in this technical solution. Summary of the Invention

[0006] The present invention adopts the following technical solutions to solve the above technical problems. A freezer heat dissipation mechanism includes a heat dissipation box body. The heat dissipation box body is a hollow structure with an open front end. A middle partition is arranged in the middle of the hollow structure of the heat dissipation box body. A filter element is arranged at the front end under the middle partition, and a wind guiding element is arranged at the front end above the middle partition. A through groove is opened at the top of the rear end of the heat dissipation box body for communicating with the exhaust air outlet of the freezer. Exhaust grilles and intake grilles are respectively arranged on the upper and lower sides at the front end of the heat dissipation box body. A flow guiding plate is installed on the rear side surface of the middle partition for conducting the air entering from the lower side at the front end of the heat dissipation box body and discharging it from the upper side at the front end of the heat dissipation box body. The wind guiding element is an exhaust fan, and a sealing element is connected in the through groove.

[0007] The filter element includes a filter frame and filter paper installed in the filter frame through a support element. A stacking area is arranged at the lower end of the filter frame for stacking sundries falling from the filter paper. A square notch corresponding to the position of the filter frame is opened on the right side of the heat dissipation box body, and a closing cover is connected in the square notch by a sealing fit method. The closing cover is installed on the side surface of the heat dissipation box body by bolts.

[0008] Preferably, the lower ends of both the filter frame and the filter paper are arranged to incline forward. The filter paper is in a folded shape. Guide grooves for limiting the filter frame are arranged on both the lower side surface of the middle partition and the lower inner wall of the heat dissipation box body. A knocking body is arranged on the closing cover for knocking the filter frame to make the sundries on the filter paper fall into the stacking area.

[0009] Preferably, a plurality of knocking bodies are arranged. The knocking body is in a rod-shaped structure. The left end of the knocking body abuts against the side surface of the filter frame, and a return spring is arranged at the right end of the knocking body.

[0010] Preferably, a receiving groove is formed in the left side wall of the heat dissipation box body corresponding to the position of the filter frame. A push plate is installed on the side wall of the receiving groove through a push spring, and the push plate abuts against the left side surface of the filter frame.

[0011] Preferably, the upper side of the front end of the heat dissipation box body has a structure with openings on both sides, and the lower side of the front end of the heat dissipation box body has a structure with an opening in the middle. Exhaust grilles are respectively arranged in the structures with openings on both sides of the heat dissipation box body, and an air intake grille is arranged in the structure with an opening in the middle of the heat dissipation box body. Moreover, the front ends of the exhaust grilles are arranged to incline downward, and the front ends of the air intake grilles are arranged to incline upward.

[0012] Preferably, the number of exhaust fans is two, and the positions of the two exhaust fans correspond one-to-one to the structural positions of the exhaust grilles. The exhaust fans are all driven by a transmission belt arranged in the middle of the heat dissipation box body.

[0013] Preferably, the upper end of the guide plate is arranged to incline backward, and a conveying partition is arranged on the rear side wall of the heat dissipation box body. The front end of the conveying partition is arranged to incline downward, and the conveying partition is of a corrugated structure.

[0014] Preferably, the sealing member is a sealing frame vertically slidably arranged in the through groove. A sealing layer is arranged on the top of the sealing frame, and the sealing layer is hermetically matched with the exhaust port of the freezer and the top of the through groove respectively.

[0015] Preferably, L-shaped grooves are arranged on both the left and right side walls of the through groove. The end of the longitudinal section of the L-shaped groove penetrates the rear side wall of the heat dissipation box body. Lifting blocks are arranged on both the left and right sides of the sealing frame. The lifting blocks are vertically slidably connected to the transverse section of the L-shaped groove. A top extension rod is slidably connected in the longitudinal section of the L-shaped groove. The rear end of the top extension rod extends outside the L-shaped groove, and inclined surface structures are arranged at the positions of the top extension rod opposite to the lifting blocks.

[0016] Preferably, the top extension rod is connected to the longitudinal section of the L-shaped groove through a return elastic member.

[0017] The beneficial effects of the present invention are as follows: First, the present invention is installed at the bottom of the freezer in a plug-in manner, and the air guiding member is used as the power component for wind conduction, so that external air enters from the lower side of the front end of the heat dissipation box body, and then is controlled to be conducted to the upper side of the rear end of the heat dissipation box body under the guidance of the guide plate. Then, under the conduction of the air guiding member, the external air is mixed with the hot air discharged from the exhaust port of the freezer and discharged from the upper side of the front end of the heat dissipation box body, and this cycle is carried out to prevent the accumulation of hot air in the freezer; in addition, through the guide plate and the conveying partition, the air can be more easily mixed with the hot air discharged from the freezer, and the conveying partition can not only conduct the air up and down, but also isolate the hot air and the air before they converge, preventing the reduction of the air intake due to the convection of the hot air and the air.

[0018] Second, the present invention adopts the method of controlling the upward movement of the sealing frame after the heat dissipation box body is inserted in place, so that the sealing frame fits tightly at the heat dissipation opening of the freezer, thereby increasing the service life of the sealing frame and the sealing performance of the connection between the heat dissipation box body and the exhaust air outlet of the freezer.

[0019] Third, the top extension rod of the present invention is connected to the longitudinal section of the L-shaped groove through a return elastic member; this structure can prevent the top extension rod from falling out of the L-shaped groove and also facilitate the removal of the heat dissipation box body.

[0020] Fourth, the present invention sets the filter element inside the heat dissipation box body, so that the filter element will not be seriously polluted when the heat dissipation system is not working. By the knocking body generating a knocking force on the filter frame and the filter paper, it is convenient for the sundries on the filter paper to fall off. At this time, the push pressure plate in contact with the left side surface of the filter frame, under the action of the push pressure spring, increases the vibration effect of the filter frame, making the sundries on the filter paper easier to fall off; in addition, after the filter element is installed, the push pressure spring is in a compressed state. When the filter element needs to be replaced, after removing the closed cover, the filter element can automatically pop out under the action of the push pressure spring, increasing the convenience of replacing the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 is the first perspective structural schematic diagram of the present invention.

[0023] Figure 2 is the second perspective structural schematic diagram of the present invention.

[0024] Figure 3 is the side view plan view after the right side wall of the heat dissipation box body of the present invention is removed.

[0025] Figure 4 is the present invention Figure 3 is the structural schematic diagram after the upper side wall of the heat dissipation box body in the present invention is partially removed.

[0026] Figure 5 is the top view cross-sectional view between the heat dissipation box body and the seal of the present invention.

[0027] Figure 6 is the rear view cross-sectional view of the heat dissipation box body of the present invention.

[0028] Figure 7 is the structural schematic diagram after the front side wall of the heat dissipation box body of the present invention is obliquely removed.

[0029] Figure 8 is the cross-sectional view of the filter element of the present invention.

[0030] Figure 9 is the first structural schematic diagram after the present invention is installed at the bottom of the freezer.

[0031] Figure 10 It is a second structural schematic diagram after the present invention is installed at the bottom of the refrigerator.

[0032] In the figure: 1. middle partition; 2. filter element; 3. air guide element; 4. sealing element; 5. sliding buckle; 10. guide plate; 11. through slot; 12. exhaust grille; 13. air inlet grille; 14. closing cover; 15. guide slot; 16. receiving slot; 17. pushing spring; 18. pushing plate; 19. conveying partition; 21. filter frame; 22. filter paper; 23. accumulation area; 24. knocking body; 41. sealing frame; 42. L-shaped slot; 43. lifting block; 44. extension rod; 45. return elastic element. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 - 3 A refrigerator heat dissipation mechanism includes a heat dissipation box, the heat dissipation box is a hollow structure with an opening at the front end, a middle partition 1 is arranged in the middle of the hollow structure of the heat dissipation box, a filter 2 is arranged at the lower front end of the middle partition 1, an air guide 3 is arranged at the upper front end of the middle partition 1, a through groove 11 is opened at the top of the rear end of the heat dissipation box, the through groove 11 is used to connect the exhaust port of the refrigerator, the upper and lower sides of the front end of the heat dissipation box are respectively provided with an exhaust grille 12 and an air inlet grille 13, a guide plate 10 is installed on the rear side of the middle partition 1, the guide plate 10 is used to conduct the air entering from the lower side of the front end of the heat dissipation box and discharge it from the upper side of the front end of the heat dissipation box, the air guide 3 is an exhaust fan, a sealing member 4 is connected in the through groove 11, and the upper and lower sides of the heat dissipation box are provided with a counter-position insertion groove. The present invention is connected to the bottom of the refrigerator to discharge the hot air discharged from the condenser in the refrigerator, thereby preventing the refrigerator from being too close to the wall to cause poor heat dissipation, and increasing the service life of the refrigerator heat dissipation system.

[0035] Specifically, Figure 9 and Figure 10As shown, first, the heat dissipation box body is installed at the bottom of the freezer by being inserted into the alignment slot. After the insertion is completed, the position of the heat dissipation box body is locked by the sliding buckle 5. At this time, the position of the through groove 11 is directly opposite to the exhaust port of the freezer. The seal 4 can increase the sealing performance of the connection between the through groove 11 and the exhaust port of the freezer. Then, the air guide member 3 is used as the power component for wind conduction, so that the external air enters from the lower front side of the heat dissipation box body. The filter member 2 purifies the external air. The air is guided by the guide plate 10 to the upper rear side of the heat dissipation box body. After that, under the conduction of the air guide member 3, the external air is mixed with the hot air discharged from the exhaust port of the freezer and discharged from the upper front side of the heat dissipation box body. Using the above conduction method, the hot air generated in the freezer will not accumulate at the rear of the freezer, increasing the heat dissipation efficiency of the refrigeration system of the freezer.

[0036] It can be understood that, as Figures 1 - 2 shown, the grooves provided on the upper and lower sides of the heat dissipation box body are the alignment slots, and the freezer bottom is provided with alignment bumps that cooperate with the alignment slots. The alignment slots can increase the stability and position accuracy of the present invention.

[0037] Refer to Figure 3 , the upper end of the guide plate 10 is arranged to incline backward, and the rear side wall of the heat dissipation box body is provided with a transfer partition 19. The front end of the transfer partition 19 is arranged to incline downward. The transfer partition 19 is of a corrugated structure. The guide plate 10 can conduct the sucked air, so that the air is conducted between the guide plate 10 and the transfer partition 19. The air makes an up-and-down undulating movement under the action of the corrugated guide plate 10, making it easier for the air to mix with the hot air discharged from the freezer. In addition, the transfer partition 19 can not only conduct the air up and down, but also isolate the hot air and the air before they converge, preventing the convection of the hot air and the air from reducing the air suction volume.

[0038] Refer to Figure 3 、 Figures 6 - 8 , the filter member 2 includes a filter frame 21 and a filter paper 22 installed in the filter frame 21 through a support member. A stacking area 23 is provided at the lower end of the filter frame 21. The stacking area 23 is used for stacking the sundries that fall from the filter paper 22. A square notch corresponding to the position of the filter frame 21 is opened on the right side of the heat dissipation box body. A closing cover 14 is connected in the square notch by a sealing fit. The closing cover 14 is installed on the side of the heat dissipation box body by bolts. The detachable closing cover 14 facilitates the replacement or cleaning of the filter member 2. The filter paper 22 in the filter frame 21 plays a role in purifying the air, preventing sundries such as dust and hair in the air from entering the interior of the heat dissipation box body and affecting the use effect of the present invention. The stacking area 23 is used for stacking the sundries that slide off the filter paper 22, thereby increasing the service life of the filter member 2.

[0039] Refer to Figure 3 、Figure 4 and Figure 8 The filter box 21 and the filter paper 22 are both arranged with their lower ends tilted forward. The filter paper 22 is in a folded shape. Guide grooves 15 for limiting the filter box 21 are provided on the lower side surface of the middle partition 1 and the lower inner wall of the heat dissipation box body. The folded structure of the filter paper 22 can increase its filtering area. At the same time, the inclined arrangement of the filter box 21 and the filter paper 22 further increases the filtering effect on the air. The guide grooves 15 are used to limit the filter box 21, so that the filter box 21 will not be displaced during operation, and at the same time, it is convenient for the replacement of the filter element 2.

[0040] Refer to Figure 7 , since after the filter paper 22 is used for a period of time, sundries will adhere to its side, which will affect the air intake efficiency of the present invention. If the filter element 2 is replaced frequently, it will be rather cumbersome. Therefore, a knocking body 24 is provided on the closing cover 14. The knocking body 24 is used to knock the filter box 21 so that the sundries on the filter paper 22 fall into the accumulation area 23, increasing the use effect of the filter element 2. A plurality of knocking bodies 24 are provided. The knocking body 24 is in a rod-shaped structure. The left end of the knocking body 24 abuts against the side surface of the filter box 21, and a return spring is provided at the right end of the knocking body 24; a receiving groove 16 is opened on the left side wall of the heat dissipation box body corresponding to the position of the filter box 21. A push plate 18 is installed on the side wall of the receiving groove 16 through a push spring 17. The push plate 18 abuts against the left side surface of the filter box 21. After manually pulling the knocking body 24 to the right and then releasing it, the knocking body 24 can generate a knocking force on the filter box 21 and the filter paper 22, facilitating the shedding of the sundries on the filter paper 22. At this time, the push plate 18 in contact with the left side surface of the filter box 21, under the action of the push spring 17, increases the vibration effect of the filter box 21, making it easier for the sundries on the filter paper 22 to fall off.

[0041] It should be noted that when the filter element 2 is installed, the push spring 17 is in a compressed state. When the filter element 2 needs to be replaced, after removing the closing cover 14, the filter element 2 can automatically pop out under the action of the push spring 17, increasing the convenience of replacing the filter element 2.

[0042] It can be understood that the filter element 2 adopted by the present invention is similar in structure to the traditional filter element (such as an automobile air filter), but improvements have been made in terms of dust accumulation. The connecting piece that plays a sealing role inside the filter element 2 is not shown in the present invention.

[0043] Refer to Figure 1 、 Figure 2 and Figure 4, since the poor sealing effect between the through groove 11 and the cold cabinet air outlet will cause the hot air not to be discharged from the preset channel, thus affecting the heat dissipation effect. Therefore, the seal 4 is a sealing frame 41 vertically slidably arranged in the through groove 11. A sealing layer is arranged on the top of the sealing frame 41, and the sealing layer is in sealing cooperation with the air outlet of the cold cabinet and the top of the through groove 11 respectively. The sealing layer on the sealing frame 41 of the present invention can make the hot air in the cold cabinet be discharged from the front side of the upper part of the heat dissipation box body.

[0044] Refer to Figure 2 、 Figure 4 and Figure 5 , since the sealing frame 41 needs to be pressed against the air outlet of the cold cabinet with a certain force during use, but if the sealing layer on the upper part of the sealing frame 41 extends out of the through groove 11, it will affect the insertion and placement action of the heat dissipation box body, and at the same time, the insertion and placement action of the heat dissipation box body will also cause damage to the sealing layer on the upper part of the sealing frame 41. Therefore, the present invention adopts the following structure. L-shaped grooves 42 are arranged on the left and right side walls of the through groove 11. The end of the longitudinal section of the L-shaped groove 42 penetrates the rear side wall of the heat dissipation box body. Lifting blocks 43 are arranged on the left and right sides of the sealing frame 41. The lifting blocks 43 are vertically slidably connected to the horizontal section of the L-shaped groove 42. A top extension rod 44 is slidably connected in the longitudinal section of the L-shaped groove 42. The rear end of the top extension rod 44 extends outside the L-shaped groove 42. The positions of the top extension rod 44 opposite to the lifting blocks 43 are both provided with inclined surface structures. The present invention adopts the method of controlling the sealing frame 41 to move upward after the heat dissipation box body is inserted and placed in place, so that the sealing frame 41 closely fits at the heat dissipation port position of the cold cabinet, thereby increasing the service life of the sealing frame 41 and the sealing performance of the connection between the heat dissipation box body and the cold cabinet air outlet.

[0045] Specifically, in the initial state, the top of the sealing frame 41 is slightly lower than the upper side surface of the heat dissipation box body. During the process of inserting the heat dissipation box body to the bottom of the cold cabinet, the rear end of the top extension rod 44 contacts the cold cabinet first, and the top extension rod 44 will move forward. The front end of the top extension rod 44 and the lifting block 43 drive the lifting block 43 to move upward under the cooperation of the inclined surface structure, so that the sealing frame 41 moves upward accordingly. When the heat dissipation box body is inserted and placed in place, the sealing layer on the upper part of the sealing frame 41 can closely press against the cold cabinet air outlet.

[0046] Refer to Figure 5 , it should be noted that the top extension rod 44 and the longitudinal section of the L-shaped groove 42 are connected by a return elastic member 45; the above structure of connecting the top extension rod 44 in the L-shaped groove 42 by the return elastic member 45 can not only prevent the top extension rod 44 from falling out of the L-shaped groove 42, but also facilitate the removal of the heat dissipation box body. When the heat dissipation box body is inserted and placed in place, the position of the heat dissipation box body can be locked by moving the sliding buckle 5. When it is necessary to remove the heat dissipation box body, move the sliding buckle 5 again, so that the return elastic member 45 drives the heat dissipation box body to slide out of the cold cabinet, which is convenient for taking the heat dissipation box body.

[0047] Refer to Figure 1 , the upper side of the front end of the heat dissipation box body is a structure with openings on both sides, the lower side of the front end of the heat dissipation box body is a structure with an opening in the middle, the exhaust grilles 12 are respectively arranged in the structures with openings on both sides of the heat dissipation box body, the intake grille 13 is arranged in the structure with an opening in the middle of the heat dissipation box body, and the front ends of the exhaust grilles 12 are arranged to incline downward, and the front ends of the intake grille 13 are arranged to incline upward. The openings on the upper and lower sides of the front end of the heat dissipation box body are arranged staggeredly. This way can prevent the hot air discharged from the upper part of the heat dissipation box body from being inhaled again, thus affecting the heat dissipation effect. The upward inclination of the front end of the intake grille 13 can prevent sundries on the ground from being sucked in, and the downward inclination of the front end of the exhaust grille 12 can blow away the sundries closer to the freezer. In addition, it can be understood that the lower side of the front end of the heat dissipation box body is a structure with an opening in the middle, so that after the air enters the heat dissipation box body, the sundries in the middle of the filter paper 22 are blown to both sides, facilitating the sundries to fall into the accumulation area 23.

[0048] Refer to Figure 6 , the number of exhaust fans is two, and the positions of the two exhaust fans correspond to the structural positions of the exhaust grilles 12 one by one. The exhaust fans are all driven by a transmission belt arranged in the middle of the heat dissipation box body. Through the rotation of the two exhaust fans, the openings on the upper side of the front end of the heat dissipation box body can evenly discharge the hot air.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigerator cooling mechanism, comprising a cooling box body. The cooling box body is a hollow structure with an open front end. A middle partition (1) is arranged in the middle of the hollow structure of the cooling box body. A filtering member (2) is arranged at the front end of the lower side of the middle partition (1), and a wind guiding member (3) is arranged at the front end of the upper side of the middle partition (1). A through groove (11) is formed at the top of the rear end of the cooling box body, and the through groove (11) is used for communicating with the air outlet of the refrigerator. It is characterized in that, On the upper and lower sides of the front end of the heat dissipation box body, an air exhaust grille (12) and an air intake grille (13) are respectively arranged. A diversion plate (10) is installed on the rear side of the middle partition plate (1). The diversion plate (10) is used to conduct the air entering from the lower side of the front end of the heat dissipation box body and discharge it from the upper side of the front end of the heat dissipation box body. The air guiding member (3) is an exhaust fan, and a sealing member (4) is connected in the through groove (11); The filter member (2) includes a filter frame (21) and filter paper (22) installed in the filter frame (21) through a support member. A stacking area (23) is arranged at the lower end of the filter frame (21). The stacking area (23) is used to stack the sundries falling from the filter paper (22). A square notch corresponding to the position of the filter frame (21) is opened on the right side of the heat dissipation box body. A closing cover (14) is connected in the square notch through a sealing fit manner, and the closing cover (14) is installed on the side of the heat dissipation box body through bolts; Both the filter frame (21) and the filter paper (22) are arranged with their lower ends inclined forward. The filter paper (22) is in a folded shape. Guide grooves (15) for limiting the filter frame (21) are arranged on the lower side surface of the middle partition plate (1) and the lower inner wall of the heat dissipation box body. A knocking body (24) is arranged on the closing cover (14). The knocking body (24) is used to knock the filter frame (21) so that the sundries on the filter paper (22) fall into the stacking area (23); The sealing member (4) is a sealing frame (41) vertically slidably arranged in the through groove (11). A sealing layer is arranged at the top of the sealing frame (41). The sealing layer is in sealing fit with the air exhaust port of the freezer and the top of the through groove (11) respectively; L-shaped grooves (42) are arranged on the left and right side walls of the through groove (11). The end of the longitudinal section of the L-shaped groove (42) penetrates the rear side wall of the heat dissipation box body. Lifting blocks (43) are arranged on both the left and right sides of the sealing frame (41). The lifting blocks (43) are vertically slidably connected to the transverse section of the L-shaped groove (42). A top extension rod (44) is slidably connected in the longitudinal section of the L-shaped groove (42). The rear end of the top extension rod (44) extends outside the L-shaped groove (42). The positions of the top extension rod (44) opposite to the lifting blocks (43) are both arranged as inclined surface structures.

2. The cooling mechanism of a freezer according to claim 1, characterized in that, A plurality of knocking bodies (24) are arranged. The knocking bodies (24) are in a rod-shaped structure. The left end of the knocking body (24) abuts against the side surface of the filter frame (21), and a return spring is arranged at the right end of the knocking body (24).

3. The cooling mechanism of a freezer according to claim 2, characterized in that, A receiving groove (16) is opened on the left side wall of the heat dissipation box body corresponding to the position of the filter frame (21). A push plate (18) is installed on the side wall of the receiving groove (16) through a push spring (17), and the push plate (18) abuts against the left side surface of the filter frame (21).

4. A freezer heat dissipation mechanism according to claim 1, characterized in that, The upper side of the front end of the heat dissipation box body is a structure with openings on both sides, and the lower side of the front end of the heat dissipation box body is a structure with an opening in the middle. The air exhaust grilles (12) are respectively arranged in the structures with openings on both sides of the heat dissipation box body, and the air intake grille (13) is arranged in the structure with an opening in the middle of the heat dissipation box body. Moreover, the front end of the air exhaust grille (12) is arranged with a downward inclination, and the front end of the air intake grille (13) is arranged with an upward inclination.

5. The cooling cabinet heat dissipation mechanism according to claim 4, characterized in that, The number of the exhaust fans is two, and the positions of the two exhaust fans correspond to the structural positions of the exhaust grilles (12) one by one. The exhaust fans are all driven by a transmission belt arranged in the middle of the heat dissipation box body.

6. The cooling cabinet heat dissipation mechanism according to claim 1, characterized in that, The upper end of the guide plate (10) is arranged to incline backward, and a conveying partition plate (19) is arranged on the rear side wall of the heat dissipation box body. The front end of the conveying partition plate (19) is arranged to incline downward, and the conveying partition plate (19) is of a corrugated structure.

7. A freezer heat dissipation mechanism according to claim 1, characterized in that, The top extension rod (44) and the longitudinal section of the L-shaped groove (42) are connected by a return elastic member (45).

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