Cooling mechanism of refrigerator

Abstract

The invention relates to the technical field of refrigerator heat dissipation, in particular to a refrigerator heat dissipation mechanism which comprises a heat dissipation box body, the heat dissipation box body is of a hollow structure with an opening in the front end, a middle partition plate is arranged in the middle of the hollow structure of the heat dissipation box body, and an exhaust grille and an air inlet grille are arranged on the upper side and the lower side of the front end of the heat dissipation box body respectively. A flow guide plate is installed on the rear side face of the middle partition plate and used for conducting air entering from the lower side of the front end of the heat dissipation box and discharging the air from the upper side of the front end of the heat dissipation box, the air guide piece is an exhaust fan, and a sealing piece is connected into the through groove. The heat dissipation device is installed at the bottom of the refrigerator in an inserted mode, the air guide piece serves as a power component for wind power conduction, so that external air enters the heat dissipation box from the lower side of the front end of the heat dissipation box, is controlled to be guided by the guide plate to be conducted to the upper side of the rear end of the heat dissipation box and then is conducted to the front side to be exhausted; in addition, through the flow guide plate and the conveying partition plate, air can be mixed with hot air exhausted by the refrigerator more easily, and the heat emission effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerator heat dissipation, in particular to a refrigerator heat dissipation mechanism. Background Art

[0002] During the refrigeration process of the refrigerator, the high-temperature and high-pressure refrigerant is cooled into liquid through the condenser. During this process, the condenser will release a large amount of hot air. The condenser of a traditional refrigerator is set on the panel of its rear wall, and the hot air released by the condenser is discharged through the exhaust port opened on the rear wall or bottom of the refrigerator.

[0003] However, since most freezers are placed against the wall at the back, the temperature of the refrigeration system will rise due to slow heat dissipation, affecting the overall service life of the freezer. At the same time, the air inlet of the freezer may also be filled with dust or debris, thus affecting the safe and stable operation of the freezer's refrigeration system.

[0004] In response to the above problems, the utility model patent with publication number CN218328832U discloses a heat dissipation device for an ultra-low temperature freezer. This technical solution is beneficial to pull out the heat dissipation frame from the bottom of the freezer body when inspection and maintenance are required by arranging the radiator in a heat dissipation frame and movably arranging the heat dissipation frame at the bottom of the freezer body, thereby facilitating the inspection and maintenance of the radiator inside the heat dissipation frame; in addition, the utility model patent with publication number CN220454046U discloses a dust removal device for the heat dissipation outlet of a commercial freezer. This technical solution dissipates heat and exhausts air through the air outlet inside the freezer body, so that the wind force drives the fan blades to rotate, and the fan blades drive the rotating shaft to rotate, the rotating shaft drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, and drives the rotating rod to rotate, so that the rotating rod drives the threaded rod to rotate synchronously through the pulley and the transmission belt, and when the threaded rod rotates, it drives the movable plate to move back and forth, and the movable plate drives the push plate to move, thereby scraping and removing dust from the dustproof plate.

[0005] However, the above technical scheme still has the following technical problems: First, although the heat dissipation frame in the technical scheme with publication number CN218328832U is movably connected to the bottom of the refrigerator, there is no necessary sealing connection between the heat dissipation frame and the exhaust port of the refrigerator, and the heat dissipation frame is close to the ground after being placed, which makes it difficult to be drawn out from the bottom of the refrigerator, and the external air and the hot air derived from the exhaust port of the refrigerator cannot be evenly mixed. When the heat dissipation frame absorbs external air, it is easy to suck a large amount of dust and other debris on the ground into the heat dissipation frame, thereby affecting the use effect of the refrigerator cooling system; Second, although the technical scheme with publication number CN220454046U is provided with a dustproof plate, the wind force discharged through the exhaust port of the refrigerator drives the rotational force of the fan blades to be insufficient to drive the above-mentioned multi-stage transmission, and the dustproof plate is mostly made of paper material, which is easily damaged by scraping. In addition, the dustproof plate in the technical scheme is arranged on the outside, so the refrigerator will also be affected by dust and other debris when it is not working; in addition, the replacement of the dustproof plate of the technical scheme is relatively cumbersome. Summary of the invention

[0006] The present invention adopts the following technical scheme to solve the above-mentioned technical problems: a refrigerator heat dissipation mechanism includes a heat dissipation box body, the heat dissipation box body is a hollow structure with an opening at the front end, a middle partition is arranged in the middle of the hollow structure of the heat dissipation box body, a filter is arranged at the front end of the lower side of the middle partition, an air guide is arranged at the front end of the upper side of the middle partition, a through groove is opened on the top of the rear end of the heat dissipation box body, the through groove is used to connect the exhaust port of the refrigerator, the upper and lower sides of the front end of the heat dissipation box body are respectively provided with an exhaust grille and an air inlet grille, a guide plate is installed on the rear side of the middle partition, the guide plate 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 guide is an exhaust fan, and a sealing member 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 member. A stacking area is provided at the lower end of the filter frame, and the stacking area is used to stack debris that falls 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. A closing cover is connected to the square notch in a sealing manner, and the closing cover is installed on the side of the heat dissipation box through bolts.

[0008] Preferably, the filter frame and the filter paper are arranged with their lower ends tilted forward, the filter paper is in a folded shape, the lower side surface of the middle partition and the lower inner wall of the heat dissipation box are provided with guide grooves for limiting the filter frame, and a knocking body is provided on the closing cover, which is used to knock the filter frame so that debris on the filter paper falls into the accumulation area.

[0009] Preferably, a plurality of knocking bodies are provided, and the knocking bodies are rod-shaped structures, the left end of the knocking bodies abuts against the side surface of the filter frame, and the right end of the knocking bodies is provided with a return spring.

[0010] Preferably, a receiving groove is provided on the left side wall of the heat dissipation box body at a position corresponding to the filter frame, and a pushing plate is installed on the side wall of the receiving groove through a pushing spring, and the pushing plate is pressed against the left side surface of the filter frame.

[0011] Preferably, the upper side of the front end of the heat dissipation box body is a two-side opening structure, the lower side of the front end of the heat dissipation box body is a middle opening structure, the exhaust grilles are respectively arranged in the two side opening structures of the heat dissipation box body, and the air inlet grille is arranged in the middle opening structure of the heat dissipation box body, and the front end of the exhaust grille is arranged to be tilted downward, and the front end of the air inlet grille is arranged to be tilted upward.

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

[0013] Preferably, the upper end of the guide plate is arranged to tilt backwards, the rear side wall of the heat dissipation box is provided with a transfer baffle, the front end of the transfer baffle is arranged to tilt downwards, and the transfer baffle is a corrugated structure.

[0014] Preferably, the sealing member is a sealing frame vertically slidably disposed in the through groove, a sealing layer is disposed on the top of the sealing frame, and the sealing layer is respectively sealed with the air outlet of the refrigerator and the top of the through groove.

[0015] Preferably, the left and right side walls of the through groove are both provided with L-shaped grooves, the end of the longitudinal section of the L-shaped groove passes through the rear side wall of the heat dissipation box body, and lifting blocks are provided on 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, and a lifting rod is slidably connected in the longitudinal section of the L-shaped groove. The rear end of the lifting rod extends to the outside of the L-shaped groove, and the relative positions of the lifting rod and the lifting block are set as inclined structures.

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

[0017] The beneficial effects of the present invention are as follows: 1. The present invention is installed at the bottom of the refrigerator in a plug-in manner, and uses the air guide as a power component for wind conduction, so that external air enters from the lower front end of the heat dissipation box body, and then is controlled to be conducted to the upper rear end of the heat dissipation box body under the guidance of the guide plate. Thereafter, under the conduction of the air guide, the external air is mixed with the hot air discharged from the exhaust port of the refrigerator and discharged from the upper front end of the heat dissipation box body, thereby circulating to prevent the accumulation of hot air in the refrigerator; in addition, through the guide plate and the transfer partition, the air can be more easily mixed with the hot air discharged from the refrigerator, and the transfer partition can not only conduct the air up and down, but also isolate the hot air and air before they converge, to prevent the convection of hot air and air from reducing the air intake.

[0018] Second, the present invention adopts a method of controlling the sealing frame to move upward after the heat dissipation box is inserted into place, so that the sealing frame is tightly fitted to the heat dissipation port of the refrigerator, thereby increasing the service life of the sealing frame and the sealing performance of the connection between the heat dissipation box and the refrigerator exhaust port.

[0019] 3. The extending rod of the present invention is connected to the longitudinal section of the L-shaped groove by a return elastic member; this structure can prevent the extending rod from falling from the L-shaped groove and can also facilitate the removal of the heat dissipation box.

[0020] Fourth, the present invention arranges the filter element inside the heat dissipation box, so that the filter element will not be seriously contaminated when the heat dissipation system is not working. The knocking body generates a knocking force on the filter frame and the filter paper, which is convenient for the debris on the filter paper to fall off. At this time, the pushing plate in contact with the left side of the filter frame increases the vibration effect of the filter frame under the action of the pushing spring, making it easier for the debris on the filter paper to fall off; in addition, after the filter element is installed, the pushing spring is in a compressed state. When the filter element needs to be replaced, the filter element can be automatically popped out under the action of the pushing spring after the closing cover is removed, thereby increasing the convenience of replacing the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the structure of the first viewing angle of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention.

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

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

[0026] Figure 5 It is a top view of the cross section between the heat dissipation box body and the sealing member of the present invention.

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

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

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

[0030] Fig. 9 It is a first structural schematic diagram of the present invention after being installed at the bottom of the refrigerator.

[0031] Fig.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 Figure 1-Figure 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, Fig. 9 and Fig.10As shown, first, the heat dissipation box is installed on the bottom of the refrigerator by plugging it into the alignment slot. After the insertion is completed, the heat dissipation box is locked in position by sliding the buckle 5. At this time, the position of the through slot 11 is opposite to the exhaust port of the refrigerator. The sealing member 4 can increase the sealing of the connection between the through slot 11 and the exhaust port of the refrigerator. Then, the air guide 3 is used as a power component for wind conduction to allow external air to enter from the lower front end of the heat dissipation box. The filter 2 purifies the external air. The air is conducted to the upper rear end of the heat dissipation box under the guidance of the guide plate 10. Then, under the conduction of the air guide 3, the external air is mixed with the hot air discharged from the exhaust port of the refrigerator and discharged from the upper front end of the heat dissipation box. The above-mentioned conduction method is adopted to prevent the hot air generated in the refrigerator from accumulating at its rear, thereby increasing the heat dissipation efficiency of the refrigerator refrigeration system.

[0036] It is understandable that if Figure 1-Figure 2 As shown, the grooves arranged on the upper and lower sides of the heat dissipation box body are alignment insertion grooves, and the bottom of the refrigerator is provided with alignment protrusions matched with the alignment insertion grooves. The alignment insertion grooves can increase the stability and position accuracy of the present invention.

[0037] See also Figure 3 The upper end of the guide plate 10 is arranged to be tilted backward, and a transfer baffle 19 is provided on the rear side wall of the heat dissipation box body. The front end of the transfer baffle 19 is arranged to be tilted downward. The transfer baffle 19 is a corrugated structure. The guide plate 10 can conduct the absorbed air so that the air is conducted between the guide plate 10 and the transfer baffle 19. The air moves up and down under the action of the guide plate 10 with a corrugated structure, so that the air is easier to mix with the hot air discharged from the refrigerator. In addition, the transfer baffle 19 can not only conduct the air up and down, but also isolate the hot air and the air before they converge, so as to prevent the convection of the hot air and the air from reducing the amount of air absorption.

[0038] See also Figure 3 , Figure 6-Figure 8 The filter element 2 includes a filter frame 21, a filter paper 22 installed in the filter frame 21 through a support, and a stacking area 23 is provided at the lower end of the filter frame 21. The stacking area 23 is used to stack the debris dropped from the filter paper 22. A square notch corresponding to the position of the filter frame 21 is provided on the right side of the heat dissipation box. 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 by bolts. The detachable closing cover 14 can facilitate the replacement or cleaning of the filter element 2. The filter paper 22 in the filter frame 21 plays a role in purifying the air, preventing dust, hair and other debris in the air from entering the interior of the heat dissipation box and affecting the use effect of the present invention. The stacking area 23 is used to stack the debris that slides off the filter paper 22, thereby increasing the service life of the filter element 2.

[0039] See also Figure 3 , Figure 4 and Figure 8 The filter frame 21 and the filter paper 22 are arranged with their lower ends tilted forward, and the filter paper 22 is folded. The lower side of the middle partition 1 and the lower inner wall of the heat dissipation box are both provided with guide grooves 15 for limiting the filter frame 21. The folded structure of the filter paper 22 can increase its filtering area, and the inclined arrangement of the filter frame 21 and the filter paper 22 further increases its filtering effect on the air. The guide groove 15 is used to limit the filter frame 21, so that the filter frame 21 will not be displaced during operation, and it is convenient to replace the filter element 2.

[0040] See also Figure 7 After the filter paper 22 has been used for a period of time, debris will be attached to its side, thereby affecting the air intake efficiency of the present invention. If the filter element 2 is frequently replaced, it will be cumbersome. Therefore, the present invention sets a knocking body 24 on the closing cover 14. The knocking body 24 is used to knock the filter frame 21 so that the debris on the filter paper 22 falls into the accumulation area 23, thereby increasing the use effect of the filter element 2. A plurality of knocking bodies 24 are provided, and the knocking bodies 24 are rod-shaped structures. The left end of the knocking body 24 is against the side of the filter frame 21, and the right end of the knocking body 24 is provided with a return spring; the heat dissipation box A receiving groove 16 is provided on the left side wall of the body at a position corresponding to the filter frame 21, and a pushing plate 18 is installed on the side wall of the receiving groove 16 through a pushing spring 17. The pushing plate 18 is against the left side of the filter frame 21. The knocking body 24 is manually pulled to the right and then released, so that the knocking body 24 can generate a knocking force on the filter frame 21 and the filter paper 22, which facilitates the falling off of debris on the filter paper 22. At this time, the pushing plate 18 in contact with the left side of the filter frame 21 increases the vibration effect of the filter frame 21 under the action of the pushing spring 17, making it easier for the debris on the filter paper 22 to fall off.

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

[0042] It is understandable that the filter element 2 used in the present invention is similar in structure to a conventional filter element (such as an automobile air filter), but has been improved in dust collection. The connector inside the filter element 2 that performs a sealing function is not shown in the present invention.

[0043] See also Figure 1 , Figure 2 and Figure 4Since the poor sealing effect between the through groove 11 and the air outlet of the refrigerator will cause the hot air not to be discharged from the preset channel, thereby affecting the heat dissipation effect, the sealing member 4 is a sealing frame 41 vertically slidably arranged in the through groove 11, and a sealing layer is arranged on the top of the sealing frame 41, which is respectively sealed with the air outlet of the refrigerator and the top of the through groove 11. The sealing layer on the sealing frame 41 of the present invention can make the hot air in the refrigerator be discharged from the upper front side of the heat dissipation box body.

[0044] See also Figure 2 , Figure 4 and Figure 5 Since the sealing frame 41 needs to be pressed against the exhaust port of the refrigerator with a certain force when in use, but the sealing layer on the upper part of the sealing frame 41 extends out of the through slot 11, it will affect the insertion and placement action of the heat dissipation box. At the same time, the insertion and placement action of the heat dissipation box 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 slots 42 are provided on the left and right side walls of the through slot 11, and the end of the longitudinal section of the L-shaped slot 42 passes through the rear side wall of the heat dissipation box. Lifting blocks 43 are provided on 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 slot 42. A top extension rod 44 is slidably connected in the longitudinal section of the L-shaped slot 42. The rear end of the top extension rod 44 extends to the outside of the L-shaped slot 42, and the position relative to the top extension rod 44 and the lifting block 43 is set to an inclined structure. The present invention adopts a method of controlling the sealing frame 41 to move upward after the heat dissipation box is inserted into place, so that the sealing frame 41 is tightly fitted at the heat dissipation port of the refrigerator, thereby increasing the service life of the sealing frame 41 and the sealing performance of the connection between the heat dissipation box and the refrigerator exhaust port.

[0045] Specifically, in the initial state, the top of the sealing frame 41 is slightly lower than the upper side of the heat dissipation box. When the heat dissipation box is inserted into the bottom of the refrigerator, the rear end of the extension rod 44 contacts the refrigerator first, and the extension rod 44 moves forward. The front end of the extension rod 44 and the lifting block 43 drive the lifting block 43 to move upward under the cooperation of the inclined structure, so that the sealing frame 41 moves upward accordingly. When the heat dissipation box is inserted into place, the sealing layer on the upper part of the sealing frame 41 can be tightly against the exhaust port of the refrigerator.

[0046] See also Figure 5 It should be noted that the extension rod 44 is connected to the longitudinal section of the L-shaped groove 42 by a return elastic member 45; the structure of connecting the extension rod 44 to the L-shaped groove 42 by using the return elastic member 45 can not only prevent the extension rod 44 from falling from the L-shaped groove 42, but also facilitate the removal of the heat dissipation box. When the heat dissipation box is inserted into place, the position of the heat dissipation box can be locked by moving the sliding buckle 5. When the heat dissipation box needs to be taken out, the sliding buckle 5 is moved again, so that the return elastic member 45 drives the heat dissipation box to slide out of the refrigerator, which is convenient for taking out the heat dissipation box.

[0047] See also Figure 1 The upper front side of the heat dissipation box body is a structure with openings on both sides, and the lower front side of the heat dissipation box body is a structure with openings in the middle. The exhaust grilles 12 are respectively arranged in the opening structures on both sides of the heat dissipation box body, and the air inlet grille 13 is arranged in the middle opening structure of the heat dissipation box body, and the front end of the exhaust grille 12 is arranged to be tilted downward, and the front end of the air inlet grille 13 is arranged to be tilted upward. The upper and lower opening structures on the front end of the heat dissipation box body are arranged in a staggered manner, which can prevent the hot air discharged from the upper part of the heat dissipation box body from being sucked in again, thereby affecting the heat dissipation effect. The front end of the air inlet grille 13 is arranged to be tilted upward to prevent the debris on the ground from being sucked in, and the front end of the exhaust grille 12 is arranged to be tilted downward to blow away the debris close to the refrigerator. In addition, it can be understood that the lower front side of the heat dissipation box body is a structure with openings in the middle, so that after the air enters the heat dissipation box body, the debris in the middle of the filter paper 22 is blown to both sides, so that the debris falls into the accumulation area 23.

[0048] See also Figure 6 There are two exhaust fans, and the positions of the two exhaust fans correspond one to one with the structural position of the exhaust grille 12. The exhaust fans are driven by a transmission belt arranged in the middle of the heat dissipation box. Through the rotation of the two exhaust fans, the opening structure on the upper side of the front end of the heat dissipation box evenly discharges hot air.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A refrigerator heat dissipation mechanism, comprising a heat dissipation box body, the heat dissipation 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 heat dissipation box body, 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 arranged at the top of the rear end of the heat dissipation box body, and the through groove (11) is used to connect to the exhaust port of the refrigerator, characterized in that: 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 member (3) is an exhaust fan; and a sealing member (4) is connected in the through groove (11); The filter element (2) comprises a filter frame (21), a filter paper (22) installed in the filter frame (21) via a support member, a stacking area (23) is provided at the lower end of the filter frame (21), and the stacking area (23) is used to stack debris dropped from the filter paper (22), a square notch corresponding to the position of the filter frame (21) is provided on the right side of the heat dissipation box, a sealing cover (14) is connected to the square notch in a sealing manner, and the sealing cover (14) is installed on the side of the heat dissipation box via bolts.

2. A refrigerator heat dissipation mechanism according to claim 1, characterized in that: The filter frame (21) and the filter paper (22) are arranged with their lower ends tilted forward, the filter paper (22) is in a folded shape, the lower side surface of the middle partition (1) and the lower inner wall of the heat dissipation box are both provided with guide grooves (15) for limiting the filter frame (21), and the closing cover (14) is provided with a knocking body (24), which is used to knock the filter frame (21) so that the debris on the filter paper (22) falls into the accumulation area (23).

3. A refrigerator heat dissipation mechanism according to claim 2, characterized in that: A plurality of knocking bodies (24) are provided, and the knocking bodies (24) are rod-shaped structures. The left end of the knocking body (24) abuts against the side surface of the filter frame (21), and the right end of the knocking body (24) is provided with a return spring.

4. A refrigerator heat dissipation mechanism according to claim 3, characterized in that: A receiving groove (16) is provided on the left side wall of the heat dissipation box body at a position corresponding to the filter frame (21), and a push plate (18) is installed on the side wall of the receiving groove (16) via a push spring (17), and the push plate (18) is pressed against the left side surface of the filter frame (21).

5. The cooling mechanism of a refrigerator according to claim 1, characterized in that: The upper front end of the heat dissipation box body is a structure with openings on both sides, and the lower front end of the heat dissipation box body is a structure with openings in the middle. The exhaust grilles (12) are respectively arranged in the opening structures on both sides of the heat dissipation box body, and the air inlet grille (13) is arranged in the structure with openings in the middle of the heat dissipation box body. The front end of the exhaust grille (12) is arranged to be tilted downward, and the front end of the air inlet grille (13) is arranged to be tilted upward.

6. A refrigerator heat dissipation mechanism according to claim 5, characterized in that: There are two exhaust fans, the positions of which correspond one to one with the structural position of the exhaust grille (12), and the exhaust fans are driven by a transmission belt arranged in the middle of the heat dissipation box.

7. The cooling mechanism of a refrigerator according to claim 1, characterized in that: The upper end of the guide plate (10) is arranged to tilt backwards, and a conveying baffle (19) is arranged on the rear side wall of the heat dissipation box. The front end of the conveying baffle (19) is arranged to tilt downwards, and the conveying baffle (19) is a wave-shaped structure.

8. The cooling mechanism of a refrigerator according to claim 1, characterized in that: The sealing member (4) is a sealing frame (41) vertically slidably arranged in the through groove (11), and a sealing layer is arranged on the top of the sealing frame (41), and the sealing layer is respectively sealed with the air outlet of the refrigerator and the top of the through groove (11).

9. The cooling mechanism of a refrigerator according to claim 8, characterized in that: The left and right side walls of the through groove (11) are both provided with L-shaped grooves (42), the end of the longitudinal section of the L-shaped groove (42) passes through the rear side wall of the heat dissipation box body, and the left and right sides of the sealing frame (41) are both provided with lifting blocks (43), the lifting blocks (43) are vertically slidably connected to the transverse section of the L-shaped groove (42), and a lifting rod (44) is slidably connected in the longitudinal section of the L-shaped groove (42), the rear end of the lifting rod (44) extends to the outside of the L-shaped groove (42), and the relative positions of the lifting rod (44) and the lifting block (43) are both set as inclined structures.

10. The cooling mechanism of a refrigerator according to claim 9, characterized in that: The extending rod (44) is connected to the longitudinal section of the L-shaped groove (42) via a return elastic member (45).

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