Cooling base of refrigerator

Abstract

The invention provides a refrigerator heat dissipation base, and relates to the field of refrigerators, the refrigerator heat dissipation base comprises a limiting support, two movable supports are slidably connected to the outer sides of the left end face and the right end face of the limiting support respectively; the distance adjusting mechanism is arranged between the limiting support and the movable support. The two protective net racks are inserted into the outer sides of the upper end faces and the lower end faces of the two movable supports correspondingly. The two cooling fans are arranged on the inner side end faces of the lower ends of the two movable supports in a sliding mode correspondingly. The heat dissipation auxiliary mechanism is arranged between the movable support and the heat dissipation fan; the cleaning auxiliary roller is arranged on the outer side of the bottom end protection net frame in a left-right sliding mode. And the cleaning auxiliary mechanism is arranged between the cleaning auxiliary roller and the high-elastic belt. Dust and impurities on the outer side of the lower end protection net frame are automatically and timely cleaned, the cleaning efficiency of the lower end protection net frame is improved, the heat dissipation effect of the refrigerator is guaranteed, the workload of a user is relieved, and the problems that the user needs to manually clean the protection net frame at regular intervals, and operation is inconvenient during cleaning are solved.

Description

Technical Field

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

[0002] In the actual application of the refrigerator, a heat dissipation base is often set under the refrigerator. After the refrigerator is placed on the top of the heat dissipation base, the heat dissipation fan at the inner end of the base is used to accelerate the air flow to help the refrigerator dissipate heat and ensure the operating stability of the refrigerator. During the use of the heat dissipation base, in order to prevent dust and impurities from entering the base and affecting the stable operation of the heat dissipation fan, protective grids are often set at the upper and lower ends of the base.

[0003] However, in the process of using the protective grid to protect the heat dissipation fan, dust and impurities are very likely to adhere to the outside of the protective grid. In order to avoid the accumulation of dust and impurities affecting the heat dissipation effect of the refrigerator, the user is usually required to manually clean the protective grid regularly. Since the protective grid is set at the bottom end surface of the base, it is not only inconvenient to clean it, but also takes a lot of time, which not only increases the user's workload, but also affects the cleaning efficiency of the protective grid and the heat dissipation effect of the heat dissipation base on the refrigerator. Summary of the invention

[0004] In view of this, the present invention provides a refrigerator heat dissipation base, which, in the process of dissipating the heat of the refrigerator, utilizes the force of the reciprocating screw when it rotates to automatically drive the cleaning auxiliary mechanism, so that the lower end protection grid frame of the cleaning auxiliary roller rotates synchronously during the process of sliding left and right, thereby realizing automatic and timely cleaning of dust and impurities on the outside of the lower end protection grid frame, which not only improves the cleaning efficiency of the lower end protection grid frame and ensures the heat dissipation effect of the refrigerator, but also reduces the workload of the user, further improving the use effect and flexibility of the heat dissipation base in actual application, as well as the work efficiency when dissipating the heat of the refrigerator.

[0005] The present invention provides a purpose and function of a heat dissipation base of a refrigerator, which specifically includes: a limit bracket, a movable support, a spacing adjustment mechanism, a protective grid, a heat dissipation fan, a heat dissipation auxiliary mechanism, a cleaning auxiliary roller and a cleaning auxiliary mechanism. There are two movable supports, and the two movable supports are respectively slidably connected to the outer sides of the left and right end surfaces of the limit bracket; the spacing adjustment mechanism is arranged between the limit bracket and the movable support; there are two protective grids, and the two protective grids are respectively plugged into the outer sides of the upper and lower end surfaces of the two movable supports; there are two heat dissipation fans, and the two heat dissipation fans are respectively slidably arranged on the inner end surfaces of the lower ends of the two movable supports; the two heat dissipation rollers are respectively provided with a plurality of protective grids, and the plurality of protective grid ... The heat fans are arranged diagonally; the heat dissipation auxiliary mechanism is arranged between the movable support and the heat dissipation fan; the heat dissipation auxiliary mechanism includes: a reciprocating screw, there are two reciprocating screws, the two reciprocating screws are rotatably connected to the inner ends of the two movable supports respectively, and the outer end of the left reciprocating screw is coaxially fixedly connected to the outside of the driving motor shaft; the front and rear end surfaces of the two reciprocating screws are coaxially fixedly connected with a transmission pulley; the outer sides of the two transmission pulleys on the same side of the front and rear are wrapped with a high-elastic belt; the cleaning auxiliary roller is slidably arranged on the outside of the bottom protective grid; the cleaning auxiliary mechanism is arranged between the cleaning auxiliary roller and the high-elastic belt.

[0006] Furthermore, the movable support is a U-shaped structure, and a positioning support block is fixedly connected at the angle of the bottom end face of the movable support; a positioning auxiliary groove is opened on the outer side of the top end face of the movable support; a plug-in positioning frame is fixedly connected on the left and right sides of the fitting surface of the protective grid and the movable support; the position of the plug-in positioning frame is the same size and aligned with the position of the positioning auxiliary groove.

[0007] Furthermore, the spacing adjustment mechanism includes: a double-headed screw and a transmission guide frame, there are two double-headed screws, which are rotatably connected to the inner sides of the front and rear ends of the limiting bracket respectively; the thread pitches on both sides of the double-headed screw are the same and the rotation directions are opposite; there are two transmission guide frames, which are fixedly connected to the inner end faces of the two movable supports respectively; a threaded transmission hole is opened on the inner side of the transmission guide frame; the threaded transmission hole on the same side is threadedly connected to the double-headed screw.

[0008] Furthermore, a transmission auxiliary shaft is vertically rotatably arranged between the two double-headed screws; the transmission auxiliary shaft is rotationally connected to the limiting bracket; The outer ends of the two double-ended lead screws are coaxially fixedly connected with a transmission bevel gear; A driving adjustment shaft is vertically rotatably arranged on the outer side of the double-ended lead screw at the front end; an adjusting hand wheel is coaxially and fixedly connected to the outer end of the driving adjustment shaft.

[0009] Furthermore, the inner end face of the driving adjustment shaft is coaxially fixedly connected with a driving bevel gear; the driving bevel gear and the transmission bevel gear at the front end are meshed with each other; the outer sides of the front and rear end faces of the transmission auxiliary shaft are coaxially fixedly connected with an adjusting bevel gear; the adjusting bevel gear and the transmission bevel gear on the same side of the front and rear are meshed with each other.

[0010] Furthermore, the heat dissipation auxiliary mechanism also includes: a transmission positioning block and an auxiliary positioning shaft, there are two transmission positioning blocks, and the two transmission positioning blocks are respectively slidably set at the lower ends of the inner end surfaces of the two movable supports; a threaded connection hole is opened on the inner side of the transmission positioning block; the threaded connection holes on the left and right sides are threadedly connected to the reciprocating screw; there are two auxiliary positioning shafts, and the two auxiliary positioning shafts are respectively rotatably connected to the outer ends of the two transmission positioning blocks; the transverse cross-section of the auxiliary positioning shaft is a convex structure, and the auxiliary positioning shafts on the left and right sides are coaxially fixedly connected to the heat dissipation fan.

[0011] Furthermore, the heat dissipation auxiliary mechanism also includes: a transmission gear and a transmission rack. There are two transmission gears, and the two transmission gears are coaxially fixedly connected to the outer sides of the two positioning auxiliary shafts; there are two transmission racks, and the two transmission racks are fixedly connected to the inner end surfaces of the two movable supports; the transmission racks and transmission gears on the same left and right sides are meshed with each other, and the transmission gears and transmission racks together constitute a gear rack transmission mechanism.

[0012] Furthermore, the cleaning auxiliary mechanism includes: a sliding auxiliary frame, a driving auxiliary block, a transmission guide groove and a limiting auxiliary support block. There are two sliding auxiliary frames, and the two sliding auxiliary frames are respectively arranged on the outside of the two high-elastic belts; there are two driving auxiliary blocks, and the two driving auxiliary blocks are respectively fixedly connected to the outer end surfaces of the two high-elastic belts; there are two transmission guide grooves, and the two transmission guide grooves are respectively opened on the inner sides of the two sliding auxiliary frames; the driving auxiliary blocks and the transmission guide grooves on the same side of the front and rear are slidably arranged; there are two limiting auxiliary support blocks, and the two limiting auxiliary support blocks are respectively fixedly connected to the outer sides of the top end surfaces of the two sliding auxiliary frames.

[0013] Furthermore, an outer side of the lower end of the sliding auxiliary frame is elastically connected to an elastic positioning frame.

[0014] Furthermore, a plurality of cleaning scrapers are fixedly connected to the outer circumferential array of the cleaning auxiliary roller; the cleaning auxiliary roller and the protective mesh frame at the bottom are in contact with each other; the two ends of the cleaning auxiliary roller are coaxially fixedly connected with a connecting shaft; the connecting shaft is rotatably connected to the elastic positioning frame.

[0015] Beneficial Effects When in use, the present invention realizes the adjustment and control of the size of the heat dissipation base, meets the use requirements when supporting heat dissipation of various refrigerators, improves the application range of the heat dissipation base, and further improves the use flexibility of the refrigerator heat dissipation base in actual application.

[0016] When the present invention is in use, the heat dissipation fan can slide back and forth on the inner side of the movable support, thereby expanding the heat dissipation area of ​​the refrigerator, accelerating the air flow during the heat dissipation of the refrigerator, improving the heat dissipation effect of the refrigerator, and further improving the use effect and work efficiency of the heat dissipation base in actual application, thereby ensuring the operating stability of the refrigerator.

[0017] When the present invention is in use, during the process of cooling the refrigerator, the force of the reciprocating screw when rotating is utilized to automatically drive the cleaning auxiliary mechanism, so that the lower end protection grid frame of the cleaning auxiliary roller rotates synchronously during the process of sliding left and right, thereby realizing automatic and timely cleaning of dust and impurities on the outer side of the lower end protection grid frame, which not only improves the cleaning efficiency of the lower end protection grid frame and ensures the cooling effect of the refrigerator, but also reduces the workload of the user, further improving the use effect and flexibility of the heat dissipation base in actual application, as well as the work efficiency when cooling the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 It is a schematic diagram of the structure of the protective grid and the movable support after installation of the present invention.

[0021] Figure 2 It is a schematic diagram of the connection structure between the transmission auxiliary shaft and the limiting bracket of the present invention.

[0022] Figure 3 It is a schematic diagram of the spacing adjustment mechanism and the movable support installation structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the installation structure of the cleaning auxiliary roller and the protective grid frame of the present invention.

[0024] Figure 5 It is a schematic diagram of the installation structure of the heat dissipation auxiliary mechanism and the cleaning auxiliary mechanism of the present invention.

[0025] Figure 6 It is a schematic diagram of the installation structure of the heat dissipation fan and the heat dissipation auxiliary mechanism of the present invention.

[0026] Figure 7 It is a schematic cross-sectional structural diagram of the connection between the transmission positioning block and the positioning auxiliary shaft of the present invention.

[0027] Figure 8 It is a schematic diagram of the installation structure of the cleaning auxiliary mechanism and the cleaning auxiliary roller of the present invention.

[0028] Reference numerals list 1. Limit bracket; 2. Movable support; 201. Positioning auxiliary groove; 3. Double-headed screw; 301. Transmission auxiliary shaft; 302. Drive adjustment shaft; 303. Transmission bevel gear; 304. Adjustment bevel gear; 305. Drive bevel gear; 306. Transmission guide frame; 4. Protection grid; 5. Cooling fan; 501. Reciprocating screw; 502. Transmission pulley; 503. High elastic belt; 504. Transmission positioning block; 505. Positioning auxiliary shaft; 506. Transmission gear; 507. Transmission rack; 6. Cleaning auxiliary roller; 601. Connecting support shaft; 7. Sliding auxiliary frame; 701. Elastic positioning frame; 702. Drive auxiliary block; 703. Transmission guide groove; 704. Limit auxiliary support block. DETAILED DESCRIPTION

[0029] Example 1: Please refer to Figures 1 to 4 As shown: The present invention provides a cooling base of a refrigerator, comprising a limiting bracket 1, a movable support 2, a spacing adjustment mechanism, a protective grid 4, a cooling fan 5, a cooling auxiliary mechanism, a cleaning auxiliary roller 6 and a cleaning auxiliary mechanism. There are two movable supports 2, and the two movable supports 2 are respectively slidably connected to the outer sides of the left and right end surfaces of the limiting bracket 1; the spacing adjustment mechanism is arranged between the limiting bracket 1 and the movable support 2; there are two protective grids 4, and the two protective grids 4 are respectively plugged into the outer sides of the upper and lower end surfaces of the two movable supports 2; there are two cooling fans 5, and the two cooling fans 5 are respectively slidably arranged on the inner end surfaces of the lower ends of the two movable supports 2, and the two cooling fans 5 are arranged diagonally. ; The heat dissipation auxiliary mechanism is arranged between the movable support 2 and the heat dissipation fan 5; the heat dissipation auxiliary mechanism includes: a reciprocating screw 501, there are two reciprocating screws 501, the two reciprocating screws 501 are respectively rotatably connected to the inner ends of the two movable supports 2, and the outer end of the left reciprocating screw 501 is coaxially fixedly connected to the outside of the driving motor shaft; the front and rear end surfaces of the two reciprocating screws 501 are coaxially fixedly connected with a transmission pulley 502; the outer sides of the two transmission pulleys 502 on the same side of the front and rear are wrapped with a high-elastic belt 503; the cleaning auxiliary roller 6 is slidably arranged on the outside of the bottom protective grid 4; the cleaning auxiliary mechanism is arranged between the cleaning auxiliary roller 6 and the high-elastic belt 503.

[0030] Among them, the movable support 2 is a U-shaped structure, and a positioning support block is fixedly connected at the angle of the bottom end face of the movable support 2; a positioning auxiliary groove 201 is opened on the outer side of the top end face of the movable support 2; a plug-in positioning frame is fixedly connected on the left and right sides of the fitting surface of the protective grid 4 and the movable support 2; the position of the plug-in positioning frame is the same size and aligned with the position of the positioning auxiliary groove 201.

[0031] Among them, the spacing adjustment mechanism includes: a double-headed screw 3 and a transmission guide frame 306. There are two double-headed screws 3, and the two double-headed screws 3 are rotatably connected to the inner sides of the front and rear ends of the limiting bracket 1 respectively; the thread pitches on both sides of the double-headed screw 3 are the same and the rotation directions are opposite; there are two transmission guide frames 306, and the two transmission guide frames 306 are fixedly connected to the inner end faces of the two movable supports 2 respectively; a threaded transmission hole is opened on the inner side of the transmission guide frame 306; the threaded transmission hole on the same side is threadedly connected to the double-headed screw 3.

[0032] Among them, a transmission auxiliary shaft 301 is vertically rotatably arranged between the two double-headed screws 3; the transmission auxiliary shaft 301 is rotatably connected to the limiting bracket 1; The outer ends of the two double-ended lead screws 3 are coaxially fixedly connected with a transmission bevel gear 303; A driving adjustment shaft 302 is vertically rotatably arranged on the outer side of the front double-ended lead screw 3; an adjusting hand wheel is coaxially fixedly connected to the outer end of the driving adjustment shaft 302.

[0033] Among them, the inner end face of the driving adjustment shaft 302 is coaxially fixedly connected with a driving bevel gear 305; the driving bevel gear 305 and the transmission bevel gear 303 at the front end are meshed with each other; the outer sides of the front and rear end faces of the transmission auxiliary shaft 301 are coaxially fixedly connected with an adjusting bevel gear 304; the adjusting bevel gear 304 and the transmission bevel gear 303 on the same side of the front and rear are meshed with each other.

[0034] The specific usage and function of this embodiment are as follows: When the present invention is in use, the driving adjustment shaft 302 is pushed to rotate, and the driving bevel gear 305 drives the transmission bevel gear 303 and the double-headed screw 3 at the front end to rotate. During the rotation of the front end transmission bevel gear 303, the adjustment bevel gear 304 is used to cooperate with the transmission auxiliary shaft 301 to rotate. During the rotation of the transmission auxiliary shaft 301, the double-headed screw 3 at the rear end is pushed to keep rotating in the same direction as the double-headed screw 3 at the front end. During the synchronous and same-direction rotation of the two double-headed screws 3, the transmission guide frame 306 pushes the two movable supports 2 to slide inward or outward at the same time. The two movable supports 2 are adjusted to a suitable position according to the size of the refrigerator, and then a protective grid frame 4 of a suitable size is used. The two protective grid frames 4 are respectively inserted into the upper and lower end surfaces of the movable support 2 by using the cooperation of the plug-in positioning frame and the positioning auxiliary groove 201.

[0035] Example 2: Please refer to Figures 4 to 8 As shown: Based on the first embodiment: Among them, the heat dissipation auxiliary mechanism also includes: a transmission positioning block 504 and a positioning auxiliary shaft 505. There are two transmission positioning blocks 504, and the two transmission positioning blocks 504 are respectively slidably set at the lower ends of the inner end surfaces of the two movable supports 2 forward and backward; a threaded connection hole is opened on the inner side of the transmission positioning block 504; the threaded connection holes on the left and right sides are threadedly connected to the reciprocating screw 501; there are two positioning auxiliary shafts 505, and the two positioning auxiliary shafts 505 are respectively rotatably connected to the outer ends of the two transmission positioning blocks 504; the transverse cross-section of the positioning auxiliary shaft 505 is a convex structure, and the positioning auxiliary shafts 505 on the left and right sides are coaxially fixedly connected with the heat dissipation fan 5.

[0036] Among them, the heat dissipation auxiliary mechanism also includes: a transmission gear 506 and a transmission rack 507. There are two transmission gears 506, and the two transmission gears 506 are coaxially fixedly connected to the outer sides of the two positioning auxiliary shafts 505; there are two transmission racks 507, and the two transmission racks 507 are fixedly connected to the inner end surfaces of the two movable supports 2; the transmission racks 507 on the same left and right sides are meshed with the transmission gears 506, and the transmission gears 506 and the transmission racks 507 together constitute a gear rack transmission mechanism.

[0037] Among them, the cleaning auxiliary mechanism includes: a sliding auxiliary frame 7, a driving auxiliary block 702, a transmission guide groove 703 and a limiting auxiliary support block 704. There are two sliding auxiliary frames 7, and the two sliding auxiliary frames 7 are respectively arranged on the outside of the two high-elastic belts 503; there are two driving auxiliary blocks 702, and the two driving auxiliary blocks 702 are respectively fixedly connected to the outer end surfaces of the two high-elastic belts 503; there are two transmission guide grooves 703, and the two transmission guide grooves 703 are respectively opened on the inner sides of the two sliding auxiliary frames 7; the driving auxiliary blocks 702 and the transmission guide grooves 703 on the same side of the front and rear are slidably arranged; there are two limiting auxiliary support blocks 704, and the two limiting auxiliary support blocks 704 are respectively fixedly connected to the outer sides of the top end surfaces of the two sliding auxiliary frames 7.

[0038] The outer side of the lower end of the sliding auxiliary frame 7 is elastically connected to an elastic positioning frame 701 .

[0039] Among them, a plurality of cleaning scrapers are fixedly connected to the outer circumferential array of the cleaning auxiliary roller 6; the cleaning auxiliary roller 6 and the protective grid frame 4 at the bottom are fitted with each other; the two ends of the cleaning auxiliary roller 6 are coaxially fixedly connected with a connecting support shaft 601; the connecting support shaft 601 is rotatably connected to the elastic positioning frame 701.

[0040] The specific usage and function of this embodiment are as follows: When the present invention is in use, the reciprocating screw 501 at the left end rotates when the driving motor is started. During the rotation of the reciprocating screw 501 at the left end, the driving pulley 502 and the high elastic belt 503 push the two reciprocating screws 501 to rotate simultaneously. During the rotation of the two reciprocating screws 501, the driving positioning block 504 pushes the cooling fan 5 to slide forward and backward at the same time. When the driving positioning block 504 slides forward and backward, the driving rack 507 pushes the driving gear 506 and the cooling fan 5 to rotate synchronously during the sliding process, thereby realizing the heat dissipation of the refrigerator and increasing the heat dissipation area of ​​the refrigerator. When the high elastic belt 503 rotates when the refrigerator is cooling, the driving auxiliary block 702 The sliding auxiliary frame 7 is pushed to slide left and right. During the sliding of the sliding auxiliary frame 7, the cleaning auxiliary roller 6 is pushed to slide synchronously. During the cleaning of dust and impurities on the lower end protection grid frame 4, the elastic positioning frame 701 squeezes the cleaning auxiliary roller 6 so that the cleaning auxiliary roller 6 and the lower end protection grid frame 4 always maintain a fit state. During the sliding of the cleaning auxiliary roller 6 left and right, due to the friction force when the cleaning auxiliary roller 6 contacts the lower end protection grid frame 4, the cleaning auxiliary roller 6 rotates synchronously during the sliding process. During the sliding and rotating process of the cleaning auxiliary roller 6 left and right, the dust and impurities on the outside of the lower end protection grid frame 4 are cleaned in time.

[0041] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0042] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0043] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A refrigerator heat dissipation base, comprising: A limit bracket, a movable support, a spacing adjustment mechanism, a protective grid, a heat dissipation fan, a heat dissipation auxiliary mechanism, a cleaning auxiliary roller and a cleaning auxiliary mechanism, wherein there are two movable supports, and the two movable supports are respectively slidably connected to the outer sides of the left and right end surfaces of the limit bracket; it is characterized in that: the spacing adjustment mechanism is arranged between the limit bracket and the movable support; there are two protective grids, and the two protective grids are respectively plugged into the outer sides of the upper and lower end surfaces of the two movable supports; there are two heat dissipation fans, and the two heat dissipation fans are respectively slidably arranged on the inner end surfaces of the lower ends of the two movable supports, and the two heat dissipation fans are arranged diagonally between each other ; The heat dissipation auxiliary mechanism is arranged between the movable support and the heat dissipation fan; the heat dissipation auxiliary mechanism includes: a reciprocating screw, there are two reciprocating screws, the two reciprocating screws are respectively rotatably connected to the inner ends of the two movable supports, and the outer end of the left reciprocating screw is coaxially fixedly connected to the outside of the driving motor shaft; the front and rear end surfaces of the two reciprocating screws are coaxially fixedly connected with a transmission pulley; the outer sides of the two transmission pulleys on the same side of the front and rear are wrapped with a high-elastic belt; the cleaning auxiliary roller is slidably arranged on the outside of the bottom protective grid; the cleaning auxiliary mechanism is arranged between the cleaning auxiliary roller and the high-elastic belt.

2. A refrigerator heat dissipation base as claimed in claim 1, characterized in that: The movable support is a U-shaped structure, and a positioning support block is fixedly connected at the angle of the bottom end face of the movable support; a positioning auxiliary groove is opened on the outer side of the top end face of the movable support; plug-in positioning frames are fixedly connected on the left and right sides of the fitting surface between the protective grid and the movable support; the position of the plug-in positioning frame is the same size and aligned with the position of the positioning auxiliary groove.

3. A refrigerator heat dissipation base as claimed in claim 1, characterized in that: The spacing adjustment mechanism includes: a double-headed screw and a transmission guide frame, there are two double-headed screws, and the two double-headed screws are rotatably connected to the inner sides of the front and rear ends of the limiting bracket respectively; the thread pitches on both sides of the double-headed screw are the same and the rotation directions are opposite; there are two transmission guide frames, and the two transmission guide frames are fixedly connected to the inner end faces of the two movable supports respectively; a threaded transmission hole is opened on the inner side of the transmission guide frame; the threaded transmission hole on the same side is threadedly connected to the double-headed screw.

4. A refrigerator heat dissipation base as claimed in claim 3, characterized in that: A transmission auxiliary shaft is vertically rotatably arranged between the two double-ended lead screws; the transmission auxiliary shaft is rotatably connected to the limit bracket; The outer ends of the two double-ended lead screws are coaxially fixedly connected with a transmission bevel gear; A driving adjustment shaft is vertically rotatably arranged on the outer side of the double-ended lead screw at the front end; an adjusting hand wheel is coaxially and fixedly connected to the outer end of the driving adjustment shaft.

5. A refrigerator heat dissipation base as claimed in claim 4, characterized in that: The inner end face of the driving adjustment shaft is coaxially fixedly connected with a driving bevel gear; the driving bevel gear and the transmission bevel gear at the front end are meshed with each other; the outer sides of the front and rear end faces of the transmission auxiliary shaft are coaxially fixedly connected with an adjusting bevel gear; the adjusting bevel gear and the transmission bevel gear on the same side of the front and rear are meshed with each other.

6. A refrigerator heat dissipation base as claimed in claim 1, characterized in that: The heat dissipation auxiliary mechanism also includes: a transmission positioning block and an auxiliary positioning shaft, there are two transmission positioning blocks, and the two transmission positioning blocks are respectively slidably arranged at the lower ends of the inner end surfaces of the two movable supports; a threaded connection hole is opened on the inner side of the transmission positioning block; the threaded connection holes on the left and right sides are threadedly connected to the reciprocating screw; there are two auxiliary positioning shafts, and the two auxiliary positioning shafts are respectively rotatably connected to the outer ends of the two transmission positioning blocks; the transverse cross-section of the auxiliary positioning shaft is a convex structure, and the auxiliary positioning shafts on the left and right sides are coaxially fixedly connected to the heat dissipation fan.

7. A refrigerator heat dissipation base as claimed in claim 6, characterized in that: The heat dissipation auxiliary mechanism also includes: a transmission gear and a transmission rack. There are two transmission gears, and the two transmission gears are coaxially fixedly connected to the outside of the two positioning auxiliary shafts; there are two transmission racks, and the two transmission racks are fixedly connected to the inner end surfaces of the two movable supports; the transmission racks and transmission gears on the same left and right sides are meshed with each other, and the transmission gears and transmission racks together constitute a gear rack transmission mechanism.

8. The cooling base of a refrigerator as claimed in claim 1, characterized in that: The cleaning auxiliary mechanism includes: a sliding auxiliary frame, a driving auxiliary block, a transmission guide groove and a limiting auxiliary support block. There are two sliding auxiliary frames, and the two sliding auxiliary frames are respectively arranged on the outside of the two high-elastic belts; there are two driving auxiliary blocks, and the two driving auxiliary blocks are respectively fixedly connected to the outer end surfaces of the two high-elastic belts; there are two transmission guide grooves, and the two transmission guide grooves are respectively opened on the inner sides of the two sliding auxiliary frames; the driving auxiliary blocks and the transmission guide grooves on the same front and rear sides are slidably arranged; there are two limiting auxiliary support blocks, and the two limiting auxiliary support blocks are respectively fixedly connected to the outer sides of the top end surfaces of the two sliding auxiliary frames.

9. A refrigerator heat dissipation base as claimed in claim 8, characterized in that: The outer side of the lower end of the sliding auxiliary frame is elastically connected with an elastic positioning frame.

10. A refrigerator heat dissipation base as claimed in claim 9, characterized in that: A plurality of cleaning scrapers are fixedly connected to the outer circumferential array of the cleaning auxiliary roller; the cleaning auxiliary roller and the protective grid frame at the bottom are fitted with each other; the two ends of the cleaning auxiliary roller are coaxially fixedly connected with a connecting support shaft; the connecting support shaft is rotatably connected to the elastic positioning frame.

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