Refrigerator with defrosting mechanism

Abstract

The application discloses a refrigerating machine with defrosting mechanism and relates to the field of refrigerating machines.The refrigerating machine comprises a main frame, the inner wall of the main frame is fixedly connected with a condensing box, the side wall of the condensing box is fixedly connected with a dust removal mechanism, and the bottom end of the dust removal mechanism is fixedly connected with a defrosting mechanism.When frost is generated inside the refrigerating machine, hot air blown out of the condensing box is gathered through the outer frame, then is guided by the guide vane, and then is blown to the compressor through the guide pipe, so that the frost is blown and melted, the defrosting effect is achieved, the angle of the guide vane can be automatically controlled according to whether the compressor is frosted, the hot air blown out of the condensing box can be blown to the outside of the No.1 side plate when no frost is generated, in the process of opening the outer cover plate, the guide rail is turned over through the No.1 side plate, the brush is pushed to move in the outer frame, and thus the dust on the outer wall of the condensing box is cleaned, so that the condensing box cannot be affected by the dust blockage and cannot affect the heat dissipation efficiency.

Description

Technical Field

[0001] This invention relates to the field of refrigeration machines, specifically a refrigeration machine equipped with a defrosting mechanism. Background Technology

[0002] A refrigeration machine is a machine that transfers heat from a lower-temperature object to the surrounding medium to obtain cooling capacity. The heat transferred from the lower-temperature object is conventionally called cooling capacity. The working fluid that participates in the thermodynamic process changes within the refrigeration machine is called refrigerant. The refrigeration temperature range is usually above 120K, and below 120K belongs to the deep cryogenic technology range. Refrigeration machines are widely used in industrial and agricultural production and daily life. Due to the very low flow rate of refrigerant, the refrigerant will start to expand in the first expandable space after flowing out of the expansion valve. We often see frost on the distributor head at the rear of the expansion valve, which is often caused by insufficient refrigerant or insufficient flow rate of the expansion valve. If there is too little refrigerant, the expansion will not utilize the entire evaporator area, but will only form a low temperature in a local area of ​​the evaporator. Some areas expand rapidly due to the low amount of refrigerant, causing the local temperature to be too low, resulting in frost on the evaporator. After local frost, because a heat insulation layer is formed on the surface of the evaporator and the heat exchange in that area is low, the refrigerant expansion will transfer to other areas, and gradually the entire evaporator will frost or freeze. The entire evaporator forms a heat insulation layer, and then the expansion spreads to the compressor return pipe, causing frost on the compressor return pipe.

[0003] If frost forms inside a refrigeration unit during use, workers need to use steam or other heat sources to melt the frost. This method is time-consuming and cannot remove the frost immediately, making it inefficient. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a refrigeration unit with a defrosting mechanism to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a refrigeration unit with a defrosting mechanism, comprising a main frame, a condenser box fixedly connected to the inner wall of the main frame, a dust removal mechanism fixedly connected to the side wall of the condenser box, a defrosting mechanism fixedly connected to the bottom end of the dust removal mechanism, a compressor fixedly connected to the inner wall of the main frame, an outer protective plate fixedly connected to the top end of the main frame, and a base fixedly connected to the bottom end of the main frame;

[0006] The dust removal mechanism includes an outer frame, a brush, push rods, and guide rails. The outer frame is fixedly connected to the side wall of the condenser box. The brush is slidably connected to the inner wall of the outer frame. The brush is fixedly connected to the push rod extending to the outside of the outer frame at the connection point with the outer frame. The ends of the two sets of push rods are slidably connected to a set of guide rails.

[0007] Preferably, the defrosting mechanism includes a guide pipe, support rods, guide vanes, pull rods, a first sliding frame, a first sliding rod, a cylinder, and an air tank. The bottom end of the outer frame is connected to the guide pipe, and the top end of the guide pipe is fixedly connected to two sets of support rods. Multiple sets of guide vanes are rotatably connected between the two sets of support rods. The side walls of the multiple sets of guide vanes are hinged to the side wall of a pull rod. The bottom end of the pull rod is fixedly connected to a first sliding frame, and the inner wall of the first sliding frame is slidably connected to a first sliding rod.

[0008] Preferably, a cylinder is fixedly connected to the side wall of the guide pipe, the top of the cylinder is fixedly connected to one end of a first slide rod, one side of the compressor is fixedly connected to the side wall of the compressor, the other side of the gas storage tank is connected to the bottom of the cylinder through a pipe, and the interior of the gas storage tank is filled with a low-boiling-point solution.

[0009] Preferably, the outer protective plate includes an upper cover plate, a first side plate, a second side plate, a rotating rod, a connector, a rotating shaft, a winch, a steel wire, a guide wheel, a first gear, a throttle, a second gear, a ratchet mechanism, a damping mechanism, and a first spring. The upper cover plate is fixedly connected to the top of the main frame. The first side plate is hinged to one side of the main frame, and the second side plate is hinged to the other side of the main frame. The side wall of the first side plate has an air outlet corresponding to the position of the condenser box. The guide rail is fixedly connected to the side wall of the first side plate.

[0010] Preferably, a set of rotating rods is fixedly connected to the top of the first side plate and the second side plate, and a set of connectors is rotatably connected to the top of the two sets of rotating rods. A rotating shaft is rotatably connected to the inner wall of the upper cover plate, and two sets of winches are fixedly connected to the outer wall of the rotating shaft. One end of a set of steel wires is fixedly connected to the side wall of each of the two sets of winches, and the other end of each set of steel wires is fixedly connected to the side wall of a set of connectors. Two sets of guide wheels are fixedly connected to the inner wall of the upper cover plate, and the two sets of guide wheels abut against the outer wall of a steel wire.

[0011] Preferably, a first gear located above the winch is fixedly connected to the outer wall of the rotating shaft, a handle is rotatably connected to the top of the upper cover plate, a second gear is fixedly connected to one end of the handle located inside the upper cover plate, a first spring located outside the upper cover plate is sleeved on the outer wall of the handle, the bottom end of the first spring is fixedly connected to the top of the upper cover plate, and the other end of the first spring is rotatably connected to the outer wall of the handle.

[0012] Preferably, the outer wall of the rotating shaft is fitted with a ratchet mechanism located above the first gear, the ratchet mechanism being fixedly connected to the top of the inner wall of the upper cover plate, and the outer wall of the rotating shaft is fitted with a damping mechanism located below the winch, the damping mechanism being fixedly connected to the bottom of the inner wall of the upper cover plate.

[0013] Preferably, the ratchet mechanism includes a first housing, a limiting pin, a limiting tooth, a paddle, and a second spring. The first housing is fixedly connected to the top of the inner wall of the upper cover plate and is sleeved on the outside of the rotating shaft. One end of the rotating shaft located inside the first housing is fixedly connected to multiple sets of limiting pins. A torsion spring is provided at the connection point between the limiting pin and the rotating shaft. The inner wall of the first housing is slidably connected to the limiting tooth. The top of the limiting tooth is fixedly connected to a paddle extending to the outside of the upper cover plate. One end of the second spring is fixedly connected to the side wall of the limiting tooth, and the other end of the second spring is fixedly connected to the inner wall of the first housing.

[0014] Preferably, the damping mechanism includes a second outer shell, a top post, a groove, and a third spring. The second outer shell is fixedly connected to the bottom of the inner wall of the upper cover plate and is sleeved on the outside of the rotating shaft. Multiple sets of top posts are slidably connected to the inner wall of the second outer shell. Multiple sets of grooves are formed at one end of the rotating shaft located inside the second outer shell. One end of the top post abuts against the inner wall of the groove. One end of the third spring is fixedly connected to the other end of the top post located inside the second outer shell. The other end of the third spring is fixedly connected to the inner wall of the second outer shell.

[0015] Preferably, the base includes a lower guard plate, a bidirectional threaded rod, a slider, a second sliding rod, a swing arm, a caster wheel, a support leg, and a second sliding frame. The lower guard plate is fixedly connected to the bottom end of the main frame. Two sets of bidirectional threaded rods extending to the outside of the lower guard plate are rotatably connected to the inner wall of the lower guard plate. Two sets of sliders are threadedly connected to the outer surfaces of the two sets of bidirectional threaded rods respectively. The threads of the bidirectional threaded rods at the contact positions with the two sets of sliders are in opposite directions. Multiple sets of swing arms are rotatably connected to the bottom end of the lower guard plate. A caster wheel is fixedly connected to one end of each swing arm, and a support leg is fixedly connected to the other end of each swing arm. A second sliding rod is fixedly connected to the bottom end of each slider. A second sliding frame is fixedly connected to the connection point between the swing arm and the lower guard plate. The second sliding frame is slidably fitted onto the outer wall of the second sliding rod.

[0016] In summary, the present invention has the following main beneficial effects:

[0017] This invention designs a defrosting mechanism that utilizes the coordinated operation of a guide pipe, support rod, guide vane, pull rod, first sliding frame, first sliding rod, cylinder, and air tank. When frost forms inside the refrigeration unit, the hot air blown from the condenser is gathered by the outer frame and guided by the guide vane, causing the airflow to pass through the guide pipe and reach the compressor, thereby melting the frost and achieving the defrosting effect. Furthermore, the defrosting mechanism can automatically control the angle of the guide vane based on whether there is frost on the compressor, allowing the hot air blown from the condenser to be directed towards the outside of the first side plate when there is no frost.

[0018] This invention designs a dust removal mechanism that utilizes the cooperation of the outer frame, brush, push rod, and guide rail within the mechanism. This allows the guide rail to rotate and push the brush to move inside the outer frame during the opening of the outer protective plate, thereby cleaning the dust on the outer wall of the condenser box and preventing the condenser box from being blocked by dust, thus affecting its heat dissipation efficiency.

[0019] This invention, through the design of the outer protective plate, utilizes the coordinated operation of the inner protective plate, side plate one, side plate two, rotating rod, connector, rotating shaft, winch, steel wire, guide wheel, gear one, throttle, gear two, ratchet mechanism, damping mechanism, and spring one. This allows for the simultaneous opening of side plate one and side plate two by rotating the rotating plate when maintenance work such as adding refrigerant to the refrigeration unit is required. This provides technicians with more operating space during maintenance work, improving efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main frame structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the outer frame of the present invention;

[0022] Figure 3 This is a schematic diagram of the defrosting mechanism of the present invention;

[0023] Figure 4 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the enlarged structure at point A of the present invention;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the base of the present invention;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the slider of the present invention;

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of the upper cover plate of the present invention;

[0028] Figure 9 This is a three-dimensional structural diagram of the several-wheel structure of the present invention;

[0029] Figure 10 This is a three-dimensional structural diagram of the damping structure of the present invention.

[0030] In the diagram: 1. Main frame; 2. Dust removal mechanism; 3. Defrosting mechanism; 4. Compressor; 5. Outer protective panel; 6. Base; 7. Condensate box;

[0031] 201. Outer frame; 202. Brush; 203. Push rod; 204. Guide rail;

[0032] 301. Guide tube; 302. Support rod; 303. Guide vane; 304. Tie rod; 305. No. 1 sliding frame; 306. No. 1 sliding rod; 307. Cylinder; 308. Air tank;

[0033] 501. Top cover plate; 502. Side plate No. 1; 503. Side plate No. 2; 504. Rotating rod; 505. Connector; 506. Shaft; 507. Winch; 508. Steel wire; 509. Guide wheel; 510. Gear No. 1; 511. Thruster; 512. Gear No. 2; 513. Ratchet mechanism; 5131. Outer shell No. 1; 5132. Limit pin; 5133. Limit tooth; 5134. Paddle; 5135. Spring No. 2; 514. Damping mechanism; 5141. Outer shell No. 2; 5142. Top column; 5143. Groove; 5144. Spring No. 3; 515. Spring No. 1;

[0034] 601. Lower guard plate; 602. Two-way threaded rod; 603. Slider; 604. Second slide rod; 605. Swing arm; 606. Caster wheel; 607. Support leg; 608. Second sliding frame. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of the present invention will now be described.

[0037] A refrigeration unit equipped with a defrosting mechanism, such as Figure 1-10 As shown, it includes a main frame 1, a condenser box 7 is fixedly connected to the inner wall of the main frame 1, a dust removal mechanism 2 is fixedly connected to the side wall of the condenser box 7, a defrosting mechanism 3 is fixedly connected to the bottom end of the dust removal mechanism 2, a compressor 4 is fixedly connected to the inner wall of the main frame 1, an outer protective plate 5 is fixedly connected to the top of the main frame 1, and a base 6 is fixedly connected to the bottom end of the main frame 1.

[0038] The dust removal mechanism 2 includes an outer frame 201, a brush 202, a push rod 203, and a guide rail 204. The outer frame 201 is fixedly connected to the side wall of the condenser box 7. The brush 202 is slidably connected to the inner wall of the outer frame 201. A push rod 203 extending to the outside of the outer frame 201 is fixedly connected to the brush 202 at the connection point with the outer frame 201. A set of guide rails 204 is slidably connected to the ends of the two sets of push rods 203 respectively. The defrosting mechanism 3 includes a guide pipe 301, a support rod 302, a guide vane 303, a pull rod 304, a first sliding frame 305, a first sliding rod 306, a cylinder 307, and an air storage tank 308. The bottom end of the outer frame 201 is connected to the guide pipe 301, and the top of the guide pipe 301... Two sets of support rods 302 are fixedly connected to the end of the compressor 4. Multiple sets of guide vanes 303 are rotatably connected between the two sets of support rods 302. The side walls of the multiple sets of guide vanes 303 are hinged to the side walls of a set of pull rods 304. A sliding frame 305 is fixedly connected to the bottom end of the pull rod 304. A sliding rod 306 is slidably connected to the inner wall of the sliding frame 305. A cylinder 307 is fixedly connected to the side wall of the guide pipe 301. The top end of the cylinder 307 is fixedly connected to one end of the sliding rod 306. A gas storage tank 308 is fixedly connected to one side of the side wall of the compressor 4. The other side of the gas storage tank 308 is connected to the bottom end of the cylinder 307 through a pipe. The interior of the gas storage tank 308 is filled with a low-boiling-point solution.

[0039] When frost forms on the outer wall of compressor 4, the gas temperature inside air receiver 308 decreases, creating a negative pressure inside air receiver 308. This causes cylinder 307 to contract. As cylinder 307 contracts, it pulls sliding frame 305 downward via sliding rod 306. During this downward movement, sliding frame 305 drives multiple sets of guide vanes 303 to rotate simultaneously via pull rod 304. This causes the hot air blown from condenser 7 to be concentrated by outer frame 201, ensuring that the hot air can only pass through the guide vanes. Only when the guide vane 303 can the hot air be discharged to the outside of the first side plate 502, but at this time the hot air is blocked by the guide vane 303. Under the guidance of the guide vane 303, this hot air enters the inner wall of the guide pipe 301, and then blows out from the bottom of the guide pipe 301. This hot air blows from the bottom of the guide pipe 301 onto the compressor 4, melting the frost on the surface of the compressor 4, thus playing a defrosting role. When the frost on the surface of the compressor 4 is removed, as the temperature rises, the gas temperature inside the gas tank 308 rises and expands, causing... Gas from inside the gas tank 308 enters the cylinder 307, pushing the cylinder 307 to unfold. This causes the cylinder 307 to push the first sliding frame 305 upward via the first sliding rod 306. The first sliding frame 305 then pushes multiple sets of guide vanes 303 to reverse and reset via the pull rod 304. At this time, the hot air blown out of the condenser 7 flows from between the multiple sets of guide vanes 303 to the outside of the first side plate 502. During the opening of the first side plate 502, the first side plate 502 flips upward, causing the guide rail 204 to flip as well. This causes the guide rail 204 to push the push rod 203 upward. At this time, the push rod 203 drives the brush 202 upward, so that the brush 202 sweeps the surface of the condenser box 7, thereby cleaning the dust track on the surface of the condenser box 7 and preventing the heat dissipation effect of the condenser box 7 from being affected by the accumulation of dust on the surface of the condenser box 7. When the first side plate 502 is reversed and reset, the first side plate 502 drives the push rod 203 to reset through the guide rail 204, thereby resetting the brush 202.

[0040] Please refer to this carefully. Figure 1-10The outer protective plate 5 includes an upper cover plate 501, a first side plate 502, a second side plate 503, a rotating rod 504, a connector 505, a rotating shaft 506, a winch 507, a steel wire 508, a guide wheel 509, a first gear 510, a throttle 511, a second gear 512, a ratchet mechanism 513, a damping mechanism 514, and a first spring 515. The upper cover plate 501 is fixedly connected to the top of the main frame 1. The first side plate 502 is hinged to one side of the main frame 1, and the second side plate 503 is hinged to the other side of the main frame 1. The side wall of the first side plate 502 has an air outlet corresponding to the position of the condenser box 7. The guide rail 204 is fixedly connected to the side wall of the first side plate 502. A set of rotating rods 504 are fixedly connected to the top of the first side plate 502 and the second side plate 503, respectively. Two sets of rotating rods 504 are rotatably connected to a set of connectors 505 at their top ends. A rotating shaft 506 is rotatably connected to the inner wall of the upper cover plate 501. Two sets of winches 507 are fixedly connected to the outer wall of the rotating shaft 506. One end of a set of steel wires 508 is fixedly connected to the side wall of each of the two sets of winches 507. The other end of each set of steel wires 508 is fixedly connected to the side wall of a set of connectors 505. Two sets of guide wheels 509 are fixedly connected to the inner wall of the upper cover plate 501. Each set of guide wheels 509 abuts against the outer wall of a steel wire 508. A first gear 510 located above the winches 507 is fixedly connected to the outer wall of the rotating shaft 506. A handle 511 is rotatably connected to the top end of the upper cover plate 501. A second gear 51 is fixedly connected to the end of the handle 511 located inside the upper cover plate 501. 2. A first spring 515 is fitted on the outer wall of the throttle 511, located outside the upper cover plate 501. The bottom end of the first spring 515 is fixedly connected to the top end of the upper cover plate 501, and the other end of the first spring 515 is rotatably connected to the outer wall of the throttle 511. A ratchet mechanism 513 is fitted on the outer wall of the shaft 506, located above the first gear 510. The ratchet mechanism 513 is fixedly connected to the top end of the inner wall of the upper cover plate 501. A damping mechanism 514 is fitted on the outer wall of the shaft 506, located below the winch 507. The damping mechanism 514 is fixedly connected to the bottom end of the inner wall of the upper cover plate 501. The ratchet mechanism 513 includes a first housing 5131, a limiting pin 5132, a limiting tooth 5133, a paddle 5134, and a second spring 5135. The first housing 5131 is fixedly connected to the outer wall of the throttle 506. A first outer casing 5131 is fixedly connected to the top of the inner wall of the upper cover plate 501 and is sleeved on the outside of the rotating shaft 506. Multiple sets of limiting pins 5132 are fixedly connected to one end of the rotating shaft 506 located inside the first outer casing 5131. A torsion spring is provided at the connection point between the limiting pin 5132 and the rotating shaft 506. A limiting tooth 5133 is slidably connected to the inner wall of the first outer casing 5131. A paddle 5134 extending to the outside of the upper cover plate 501 is fixedly connected to the top of the limiting tooth 5133. One end of a second spring 5135 is fixedly connected to the side wall of the limiting tooth 5133. The other end of the second spring 5135 is fixedly connected to the inner wall of the first outer casing 5131. The damping mechanism 514 includes a second outer casing 5141, a top post 5142, a groove 5143, and a third spring 5144.The second outer casing 5141 is fixedly connected to the bottom of the inner wall of the upper cover plate 501, and is fitted onto the outside of the rotating shaft 506. Multiple sets of top posts 5142 are slidably connected to the inner wall of the second outer casing 5141. Multiple sets of grooves 5143 are formed at one end of the rotating shaft 506 inside the second outer casing 5141. One end of each top post 5142 abuts against the inner wall of the groove 5143. One end of a third spring 5144 is fixedly connected to the other end of each top post 5142 inside the second outer casing 5141, and the other end of the third spring 5144 is fixedly connected to the inner wall of the second outer casing 5141.

[0041] When maintenance of the refrigeration unit's internal components is required, pushing the throttle downwards compresses the first spring 515, causing the throttle 511 to engage the second gear 512 with the first gear 510. Rotating the throttle 511 then drives the second gear 512, which in turn drives the first gear 510. The first gear 510 then drives the rotating shaft 506, which in turn drives the two sets of winches 507. These winches then wind up the steel wire 508, causing the two sets of steel wire 508 to pull the two sets of connectors 505, thus enabling the two sets of connectors to... Connector 505 drives side plate 502 and side plate 503 to flip open via rotating rod 504. During the rotation of shaft 506, multiple sets of limiting pins 5132 rotate. When a limiting pin 5132 contacts a limiting tooth 5133 during rotation, the pin rotates due to the pushing action of the tooth 5133, thus torsion springs. Once the pin 5132 has completely passed the limiting tooth 5133, the torsion spring pushes the pin back to its original position. If shaft 506 rotates in the opposite direction at this time, the end of the limiting pin 5132 will abut against the limiting tooth 5133. The vertical plane of 133 prevents the shaft 506 from rotating, thus preventing it from rotating in the opposite direction and preventing the first side plate 502 and the second side plate 503 from accidentally falling and hitting maintenance personnel. When it is necessary to lower the rear side plate and the second side plate 503, pushing the lever 5134 causes the lever 5134 to drive the limiting tooth 5133 to compress the second spring 5135. At this time, the limiting tooth 5133 cannot contact the limiting pin 5132, thus allowing the shaft 506 to rotate in the opposite direction. During the rotation of the shaft 506, multiple sets of grooves 5143 rotate, making... The groove 5143 pushes the top post 5142 to compress the third spring 5144. When the next set of grooves 5143 is aligned with the top post 5142, the third spring 5144 pushes the top post 5142 to slide into the groove 5143. This causes the rotating shaft 506 to need to overcome the rebound force of the third spring 5144 during rotation, providing resistance to the rotation of the rotating shaft 506. This makes it easier to control the speed of the throttle 511 in the opposite direction when resetting the first side plate 502 and the second side plate 503, preventing the first side plate 502 and the second side plate 503 from hitting the main frame 1.

[0042] Please refer to this carefully. Figure 1-10 The base 6 includes a lower guard plate 601, a bidirectional threaded rod 602, a slider 603, a second sliding rod 604, a swing arm 605, a caster wheel 606, a support leg 607, and a second sliding frame 608. The lower guard plate 601 is fixedly connected to the bottom end of the main frame 1. Two sets of bidirectional threaded rods 602 extending to the outside of the lower guard plate 601 are rotatably connected to the inner wall of the lower guard plate 601. Two sets of sliders 603 are threadedly connected to the outer surfaces of the two sets of bidirectional threaded rods 602 respectively. The bidirectional threaded rods 602 interact with... The two sets of sliders 603 have opposite thread directions at their contact positions. The bottom end of the lower guard plate 601 is rotatably connected to multiple sets of swing arms 605. One end of the swing arm 605 is fixedly connected to a universal wheel 606, and the other end of the swing arm 605 is fixedly connected to a support leg 607. The bottom end of the slider 603 is fixedly connected to a second slide rod 604. The swing arm 605 is fixedly connected to a second sliding frame 608 at the connection point with the lower guard plate 601. The second sliding frame 608 is slidably sleeved on the outer wall of the second slide rod 604.

[0043] When the refrigeration unit needs to be moved, rotating the two sets of bidirectional threaded rods 602 causes the two sets of sliders 603 to move closer together. At this time, the second sliding rod 604 pushes the second sliding frame 608 to rotate, which in turn causes the second sliding frame 608 to rotate the swing arm 605. This, in turn, causes the swing arm 605 to rotate the support leg 607 and the caster wheel 606. The lower guard plate 601 gradually approaches the ground, and with the rotation of the swing arm 605, the caster wheel 606 contacts the ground. Then, continuing to rotate the bidirectional threaded rods 602... The caster wheel 606 supports the lower guard plate 601, and the support leg 607 is separated from the ground. At this time, the refrigerator can be moved flexibly. After the refrigerator is moved to the designated position, the two sets of sliders 603 on the same set of two-way threaded rods 602 are moved away from each other by rotating the bidirectional threaded rod 602 in the opposite direction. At this time, the swing arm 605 rotates in the opposite direction, so that the swing arm 605 drives the support leg 607 and the caster wheel 606 to rotate in the opposite direction and reset, so that the support leg 607 fully supports the base 6. At this time, the caster wheel 606 cannot contact the ground.

[0044] During operation, when frost forms on the outer wall of compressor 4, the gas temperature inside air tank 308 decreases, creating a negative pressure inside air tank 308, causing cylinder 307 to contract. As cylinder 307 contracts, it pulls sliding frame 305 downwards via sliding rod 306. During this downward movement, sliding frame 305 drives multiple sets of guide vanes 303 to rotate simultaneously via pull rod 304. This causes the hot air blown from condenser 7 to be concentrated by outer frame 201, ensuring it can only pass through guide vanes 303 to reach the outside of side plate 502. However, the hot air is blocked by guide vanes 303, and under their guidance, it enters the inner wall of guide pipe 301. Then, the hot air is blown out from the bottom of the guide pipe 301. This hot air blows from the bottom of the guide pipe 301 onto the compressor 4, melting the frost on the surface of the compressor 4, thus playing a defrosting role. After the frost on the surface of the compressor 4 is removed, as the temperature rises, the gas temperature inside the gas tank 308 increases and expands, causing the gas inside the gas tank 308 to enter the cylinder 307 and push the cylinder 307 to unfold. This causes the cylinder 307 to push the first sliding frame 305 to move upward through the first sliding rod 306. The first sliding frame 305 pushes the multiple sets of guide vanes 303 to reverse and reset through the pull rod 304. At this time, the hot air blown out of the condenser box 7 flows from between the multiple sets of guide vanes 303 to the outside of the first side plate 502.

[0045] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A refrigeration unit equipped with a defrosting mechanism, comprising a main frame (1), characterized in that: A condenser box (7) is fixedly connected to the inner wall of the main frame (1), a dust removal mechanism (2) is fixedly connected to the side wall of the condenser box (7), a defrosting mechanism (3) is fixedly connected to the bottom end of the dust removal mechanism (2), a compressor (4) is fixedly connected to the inner wall of the main frame (1), an outer protective plate (5) is fixedly connected to the top of the main frame (1), and a base (6) is fixedly connected to the bottom end of the main frame (1). The dust removal mechanism (2) includes an outer frame (201), a brush (202), a push rod (203), and a guide rail (204). The outer frame (201) is fixedly connected to the side wall of the condenser box (7). The inner wall of the outer frame (201) is slidably connected to the brush (202). The brush (202) is fixedly connected to the push rod (203) extending to the outside of the outer frame (201) at the connection point with the outer frame (201). The ends of the two sets of push rods (203) are slidably connected to a set of guide rails (204). The defrosting mechanism (3) includes a guide pipe (301), a support rod (302), a guide plate (303), a pull rod (304), a first sliding frame (305), a first sliding rod (306), a cylinder (307), and an air tank (308). The bottom end of the outer frame (201) is connected to the guide pipe (301). The top end of the guide pipe (301) is fixedly connected to two sets of support rods (302). Multiple sets of guide plates (303) are rotatably connected between the two sets of support rods (302). The side walls of the multiple sets of guide plates (303) are hinged to the side walls of a set of pull rods (304). The bottom end of the pull rod (304) is fixedly connected to a first sliding frame (305). The inner wall of the first sliding frame (305) is slidably connected to a first sliding rod (306). A cylinder (307) is fixedly connected to the side wall of the guide pipe (301). The top of the cylinder (307) is fixedly connected to one end of the first slide rod (306). A gas storage tank (308) is fixedly connected to one side of the side wall of the compressor (4). The other side of the gas storage tank (308) is connected to the bottom of the cylinder (307) through a pipe. The interior of the gas storage tank (308) is filled with a low-boiling-point solution.

2. A refrigeration unit with a defrosting mechanism according to claim 1, characterized in that: The outer protective plate (5) includes an upper cover plate (501), a first side plate (502), a second side plate (503), a rotating rod (504), a connector (505), a rotating shaft (506), a winch (507), a steel wire (508), a guide wheel (509), a first gear (510), a throttle (511), a second gear (512), a ratchet mechanism (513), a damping mechanism (514), and a first spring (515). The upper cover plate (501) is fixedly connected to the top of the main frame (1). The first side plate (502) is hinged to one side of the main frame (1), and the second side plate (503) is hinged to the other side of the main frame (1). The side wall of the first side plate (502) has an air outlet corresponding to the position of the condenser box (7). The guide rail (204) is fixedly connected to the side wall of the first side plate (502).

3. A refrigeration unit with a defrosting mechanism according to claim 2, characterized in that: The top ends of the first side plate (502) and the second side plate (503) are respectively fixedly connected to a set of rotating rods (504). The top ends of the two sets of rotating rods (504) are respectively rotatably connected to a set of connectors (505). The inner wall of the upper cover plate (501) is rotatably connected to a rotating shaft (506). The outer wall of the rotating shaft (506) is fixedly connected to two sets of winches (507). The side walls of the two sets of winches (507) are respectively fixedly connected to one end of a set of steel wires (508). The other ends of the two sets of steel wires (508) are respectively fixedly connected to the side wall of a set of connectors (505). The inner wall of the upper cover plate (501) is fixedly connected to two sets of guide wheels (509). The two sets of guide wheels (509) respectively abut against the outer wall of a steel wire (508).

4. A refrigeration unit with a defrosting mechanism according to claim 2, characterized in that: The outer wall of the rotating shaft (506) is fixedly connected to a first gear (510) located above the winch (507). The top of the upper cover plate (501) is rotatably connected to a handle (511). One end of the handle (511) located inside the upper cover plate (501) is fixedly connected to a second gear (512). The outer wall of the handle (511) is fitted with a first spring (515) located outside the upper cover plate (501). The bottom end of the first spring (515) is fixedly connected to the top of the upper cover plate (501), and the other end of the first spring (515) is rotatably connected to the outer wall of the handle (511).

5. A refrigeration unit with a defrosting mechanism according to claim 2, characterized in that: The outer wall of the rotating shaft (506) is fitted with a ratchet mechanism (513) located above the first gear (510). The ratchet mechanism (513) is fixedly connected to the top of the inner wall of the upper cover plate (501). The outer wall of the rotating shaft (506) is fitted with a damping mechanism (514) located below the winch (507). The damping mechanism (514) is fixedly connected to the bottom of the inner wall of the upper cover plate (501).

6. A refrigeration unit with a defrosting mechanism according to claim 2, characterized in that: The ratchet mechanism (513) includes a first housing (5131), a limiting pin (5132), a limiting tooth (5133), a paddle (5134), and a second spring (5135). The first housing (5131) is fixedly connected to the top of the inner wall of the upper cover plate (501), and the first housing (5131) is sleeved on the outside of the rotating shaft (506). One end of the rotating shaft (506) located inside the first housing (5131) is fixedly connected to multiple sets of limiting pins (5132). The pin (5132) is provided with a torsion spring at the connection with the rotating shaft (506). The inner wall of the first outer shell (5131) is slidably connected with a limiting tooth (5133). The top end of the limiting tooth (5133) is fixedly connected with a paddle (5134) extending to the outside of the upper cover plate (501). The side wall of the limiting tooth (5133) is fixedly connected with one end of a second spring (5135). The other end of the second spring (5135) is fixedly connected to the inner wall of the first outer shell (5131).

7. A refrigeration unit with a defrosting mechanism according to claim 2, characterized in that: The damping mechanism (514) includes a second outer shell (5141), a top post (5142), a groove (5143), and a third spring (5144). The second outer shell (5141) is fixedly connected to the bottom of the inner wall of the upper cover plate (501), and the second outer shell (5141) is sleeved on the outside of the rotating shaft (506). Multiple sets of top posts (5142) are slidably connected to the inner wall of the second outer shell (5141). Multiple sets of grooves (5143) are opened at one end of the rotating shaft (506) located inside the second outer shell (5141). One end of the top post (5142) abuts against the inner wall of the groove (5143). The other end of the top post (5142) located inside the second outer shell (5141) is fixedly connected to one end of the third spring (5144), and the other end of the third spring (5144) is fixedly connected to the inner wall of the second outer shell (5141).

8. A refrigeration unit with a defrosting mechanism according to claim 1, characterized in that: The base (6) includes a lower guard plate (601), a bidirectional threaded rod (602), a slider (603), a second sliding rod (604), a swing arm (605), a caster wheel (606), a support leg (607), and a second sliding frame (608). The lower guard plate (601) is fixedly connected to the bottom end of the main frame (1). The inner wall of the lower guard plate (601) is rotatably connected to two sets of bidirectional threaded rods (602) extending to the outside of the lower guard plate (601). The outer surfaces of the two sets of bidirectional threaded rods (602) are respectively threaded with two sets of sliders (603). The threads at the contact positions with the two sets of sliders (603) are opposite in direction. The bottom end of the lower guard plate (601) is rotatably connected to multiple sets of swing arms (605). One end of the swing arm (605) is fixedly connected to a universal wheel (606), and the other end of the swing arm (605) is fixedly connected to a support leg (607). The bottom end of the slider (603) is fixedly connected to a second slide rod (604). The swing arm (605) is fixedly connected to a second sliding frame (608) at the connection point with the lower guard plate (601). The second sliding frame (608) is slidably sleeved on the outer wall of the second slide rod (604).

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