Refrigerator with defrosting device

Abstract

The utility model relates to the technical field of refrigerators, and discloses a refrigerator with a defrosting device, which comprises a refrigerator main body and a sealing door movably arranged above the front side of the refrigerator main body, a fan is fixedly arranged on the top of the refrigerator main body close to the left side, an air inlet pipe is fixedly arranged on the right side of the fan, and an air outlet pipe is fixedly arranged on the right side of the air inlet pipe. A connecting pipe is fixedly installed on the left side of the fan, a heater is fixedly installed at the left end of the connecting pipe, a conveying pipe is fixedly installed in the middle of the bottom of the heater, and through mutual cooperation of a fixing rod, a threaded sleeve, a threaded rod, a flat plate, a servo motor and a supporting frame, a scraping plate can be driven to move downwards; therefore, defrosting operation can be conducted on the side face of the refrigerator body, the defrosting work can be completed without the help of tools such as a scraper knife by workers, certain heat can be provided for the air outlet mesh grid through operation of the draught fan and the heater, part of frost can be melted through hot air, and the defrosting effect is better.

Description

Technical Field

[0001] This utility model relates to the technical field of refrigeration machines, specifically a refrigeration machine with a defrosting device. Background Technology

[0002] Food freezers are essential devices for freezing and preserving food. They allow operators to open the front opening of the device via a baffle, enabling them to place food inside for freezing and preservation. However, after prolonged use, frost will condense on the surface of the freezer, especially at the air outlet. To ensure the freezer functions properly, regular defrosting is often necessary.

[0003] In most existing refrigeration units equipped with defrosting devices, workers have to use scrapers or other tools to remove the frost that forms on the outer surface of the refrigeration unit. This not only increases the workload of the workers but also results in low defrosting efficiency. Furthermore, scraping directly is laborious and can damage the scraper, leading to poor performance.

[0004] Therefore, we propose a refrigeration unit with a defrosting device to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a freezer with a defrosting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a freezer with a defrosting device, comprising a freezer body and a sealing door movably installed on the upper front side of the freezer body. A fan is fixedly installed on the top of the freezer body near the left side, and an air inlet pipe is fixedly installed on the right side of the fan. A connecting pipe is fixedly installed on the left side of the fan, and a heater is fixedly installed at the left end of the connecting pipe. A conveying pipe is fixedly installed at the middle of the bottom of the heater. The right end of the conveying pipe extends through the inner cavity of the freezer body and is fixedly installed with an air outlet pipe. The right side of the air outlet pipe is fixedly installed on the inner wall of the inner cavity of the freezer body. A fixing frame is fixedly installed on the right side of the freezer body, and a water collection trough is opened at the bottom of the inner cavity of the fixing frame. A scraper is provided near the top of the inner cavity of the fixing frame. A shaking component is installed at the bottom of the scraper near both the front and rear sides, and a moving component is installed on the rear side of the scraper.

[0007] The shaking assembly includes a vertical plate fixedly installed at the bottom of the scraper near the rear side and a movable rod movably installed on the left side of the vertical plate near the bottom. A cam is fixedly sleeved on the outer side of the movable rod, and a push plate is provided above the top of the cam. A striking spring is fixedly installed at the top of the push plate near the middle, and a striking ball is fixedly installed at the upper end of the striking spring.

[0008] Preferably, a sliding rod is slidably installed on the push plate near the front side, and the upper end of the sliding rod is fixedly installed on the scraper. A return spring is sleeved on the outer side of the sliding rod, and the two ends of the return spring are respectively fixedly installed on the scraper and the push plate.

[0009] Preferably, a transmission gear is fixedly installed at the left end of the movable rod, and a transmission rack plate meshes with the rear side of the transmission gear. The rear side of the transmission rack plate is fixedly installed on the inner wall of the cavity of the fixed frame.

[0010] Preferably, two guide rods are slidably installed on the scraper near the right side, and the guide rods are arranged front and back, with both the upper and lower ends of the guide rods fixedly installed on the inner wall of the cavity of the fixed frame.

[0011] Preferably, L-shaped support rods are fixedly installed at the bottom of the heater near both the front and rear sides, and the right ends of the L-shaped support rods are fixedly installed on the main body of the refrigerator.

[0012] Preferably, a number of nozzles are fixedly installed at equal intervals through the bottom of the air outlet pipe.

[0013] Preferably, a number of air vent grilles are fixedly installed at equal intervals through the right side of the main body of the refrigeration unit.

[0014] Preferably, the moving component includes a fixed rod fixedly installed on the rear side of the scraper and a threaded sleeve fixedly installed on the rear end of the fixed rod. A sliding opening is provided on the rear side of the fixed frame near the top. The outer side of the fixed rod is slidably installed through the inner cavity of the sliding opening. A threaded rod is threaded through the middle of the threaded sleeve. Two flat plates are fixedly installed on the rear side of the fixed frame near the top. The flat plates are arranged vertically. The upper end of the threaded rod is movably installed on the upper flat plate, and the lower end of the threaded rod movably extends through to the outer side of the lower flat plate. A servo motor is provided at the bottom of the lower flat plate, and the output end of the servo motor is fixedly connected to the lower end of the threaded rod.

[0015] Preferably, a support frame is fixedly installed on the rear side of the servo motor, and the front end of the support frame is fixedly installed on the fixed frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Through the cooperation of components such as the fixed rod, threaded sleeve, threaded rod, plate, servo motor and support frame, the scraper can be driven to move downward, thereby performing defrosting operation on the side of the main body of the refrigerator. The defrosting work can be completed without the need for staff to use tools such as scrapers. In addition, by operating the fan and heater, a certain amount of heat can be provided to the air outlet grille. The hot air can melt some of the frost, making the defrosting effect better.

[0018] 2. Through the cooperation of components such as the vertical plate, movable rod, transmission gear, transmission rack plate, cam, push plate, sliding rod, return spring, striking spring and striking ball, the striking ball can drive the scraper to strike the scraper when it moves downward. By striking the scraper, the physical impact force on the frost is increased, thereby accelerating its removal and improving the scraping effect of the scraper. Attached Figure Description

[0019] Figure 1 This is a perspective view of the entire utility model;

[0020] Figure 2 This is a partial bottom-view sectional perspective view of the present invention;

[0021] Figure 3 This is a rear perspective view of the present invention;

[0022] Figure 4 This is a partial right-side bottom-view perspective view of the present invention;

[0023] Figure 5 This is a partial right-side sectional view of the present invention.

[0024] Figure 6 For the present utility model Figure 5 Enlarged view of point A in the middle.

[0025] In the diagram: 1. Refrigeration unit body; 11. Exhaust grille; 2. Sealing door; 3. Fan; 4. Heater; 41. L-shaped support rod; 5. Exhaust duct; 51. Nozzle; 6. Fixing frame; 7. Scraper; 71. Guide rod; 8. Vibration assembly; 81. Vertical plate; 82. Movable rod; 821. Transmission gear; 822. Transmission rack plate; 83. Cam; 84. Push plate; 841. Sliding rod; 842. Return spring; 85. Impact spring; 86. Impact ball; 9. Moving assembly; 91. Fixing rod; 92. Threaded sleeve; 93. Threaded rod; 94. Flat plate; 95. Servo motor; 951. Support frame. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figure 1-6A refrigerator with a defrosting device includes a refrigerator body 1 and a sealing door 2 movably installed on the upper front side of the refrigerator body 1. A fan 3 is fixedly installed on the top of the refrigerator body 1 near the left side, and an air inlet pipe is fixedly installed on the right side of the fan 3. A connecting pipe is fixedly installed on the left side of the fan 3, and a heater 4 is fixedly installed at the left end of the connecting pipe. A conveying pipe is fixedly installed at the middle of the bottom of the heater 4. The right end of the conveying pipe extends through the inner cavity of the refrigerator body 1 and is fixedly installed with an air outlet pipe 5. The right side of the air outlet pipe 5 is fixedly installed on the inner wall of the inner cavity of the refrigerator body 1. A fixed frame 6 is fixedly installed, and a water collection trough is opened at the bottom of the inner cavity of the fixed frame 6. The top left side of the inner cavity of the water collection trough is inclined to facilitate the collection of frost. A drain pipe is fixedly installed through the right side of the fixed frame 6 near the bottom. The drain pipe is connected to the inner cavity of the water collection trough and is equipped with a valve. A scraper 7 is installed near the top of the inner cavity of the fixed frame 6. A shaking component 8 is installed on the bottom of the scraper 7 near the front and rear sides. A moving component 9 is installed on the rear side of the scraper 7. The shaking component 8 can knock and vibrate the scraper 7, and the moving component 9 can drive the scraper 7 to move up and down.

[0029] Specifically, two guide rods 71 ​​are slidably installed on the scraper 7 near the right side, and the guide rods 71 ​​are arranged front and back. The upper and lower ends of the guide rods 71 ​​are fixedly installed on the inner wall of the cavity of the fixed frame 6, which serves to guide and limit the movement of the scraper 7, and has good stability.

[0030] Specifically, L-shaped support rods 41 are fixedly installed at the bottom of the heater 4 near the front and rear sides, and the right end of the L-shaped support rods 41 is fixedly installed on the main body 1 of the refrigerator, which serves to support the heater 4.

[0031] Specifically, several nozzles 51 are fixedly installed at equal intervals through the bottom of the air outlet duct 5 to facilitate the exhaust of hot air.

[0032] Specifically, several air vent grilles 11 are fixedly installed at equal intervals on the right side of the main body 1 of the refrigeration unit.

[0033] In this embodiment, the moving component 9 includes a fixed rod 91 fixedly installed on the rear side of the scraper 7 and a threaded sleeve 92 fixedly installed on the rear end of the fixed rod 91. A sliding opening is provided on the rear side of the fixed frame 6 near the top. The outer side of the fixed rod 91 is slidably installed through the inner cavity of the sliding opening. A threaded rod 93 is threaded through the upper middle part of the threaded sleeve 92. Two flat plates 94 are fixedly installed on the rear side of the fixed frame 6 near the top. The flat plates 94 are arranged vertically. The upper end of the threaded rod 93 is movably installed on the upper flat plate 94, and the lower end of the threaded rod 93 movably extends through to the outer side of the lower flat plate 94. A servo motor 95 is provided at the bottom of the lower flat plate 94. The output end of the servo motor 95 is fixedly connected to the lower end of the threaded rod 93, which can drive the scraper 7 to move downward on the right side of the freezer body 1, thereby accelerating the defrosting process.

[0034] Specifically, a support frame 951 is fixedly installed on the rear side of the servo motor 95, and the front end of the support frame 951 is fixedly installed on the fixed frame 6, which serves to support the servo motor 95.

[0035] In this embodiment: During operation, a layer of frost will condense on the outside of the main body 1 of the refrigerator. This frost can be cleaned periodically. During cleaning, the fan 3 and heater 4 can be run. When the fan 3 is running, it will deliver air to the heater 4 through the air inlet pipe and connecting pipe for heating. Then, it will enter the air outlet pipe 5 through the delivery pipe and then be sprayed out through several nozzles 51, thereby blowing hot air onto the air outlet grid 11 to melt the frost. Then, the servo motor 95 will be run. When the servo motor 95 is running, it will drive the threaded rod 93 to rotate. When the threaded rod 93 rotates, it will drive the threaded sleeve 92 to move downward. When the threaded sleeve 92 moves downward, it will drive the scraper 7 to move downward through the fixed rod 91, thereby scraping off the frost on the outside of the main body 1 of the refrigerator and letting it fall into the water collection tank.

[0036] Example 2

[0037] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 3 and Figure 5-6 The shaking component 8 includes a vertical plate 81 fixedly installed at the bottom of the scraper 7 near the rear side and a movable rod 82 movably installed on the left side of the vertical plate 81 near the bottom. A cam 83 is fixedly sleeved on the outer side of the movable rod 82, and a push plate 84 is provided above the top of the cam 83. A knocking spring 85 is fixedly installed at the top of the push plate 84 near the middle. A knocking ball 86 is fixedly installed at the upper end of the knocking spring 85. The knocking ball 86 can drive the scraper 7 to knock the scraper 7 during the up and down movement of the scraper 7. By knocking the scraper 7, the physical impact force on the frost is increased, thereby accelerating its removal and improving the scraping effect of the scraper 7.

[0038] Specifically, a sliding rod 841 is slidably installed on the push plate 84 near the front side, and the upper end of the sliding rod 841 is fixedly installed on the scraper 7. A return spring 842 is sleeved on the outer side of the sliding rod 841. The two ends of the return spring 842 are fixedly installed on the scraper 7 and the push plate 84 respectively, which facilitates the movement and restoration of the push plate 84.

[0039] Specifically, a transmission gear 821 is fixedly installed on the left end of the movable rod 82, and a transmission rack plate 822 meshes with the rear side of the transmission gear 821. The rear side of the transmission rack plate 822 is fixedly installed on the inner wall of the cavity of the fixed frame 6, which facilitates the transmission work of the scraper 7 when it moves up and down, and can drive the cam 83 to rotate continuously.

[0040] In this embodiment: During the downward movement of the scraper 7, the transmission gear 821 moves downward on the transmission rack plate 822 via the upright plate 81 and the movable rod 82. Under the action of the transmission rack plate 822, the transmission gear 821 rotates. When the transmission gear 821 rotates, it drives the movable rod 82 to rotate. When the movable rod 82 rotates, it drives the cam 83 to rotate. When the cam 83 rotates to contact the push plate 84, it pushes it upward and squeezes the adjacent return spring 842. When the push plate 84 moves upward, it drives the striking ball 86 to strike the bottom of the scraper 7 via the striking spring 85. By striking the scraper 7, the physical impact force on the frost is increased, thereby accelerating its removal and improving the scraping effect of the scraper 7. When the cam 83 rotates away from the push plate 84, the push plate 84 will return to its original position under the action of the return spring 842. Since the cam 83 is constantly rotating, it drives the striking ball 86 to strike the scraper 7 back and forth continuously.

[0041] Working Principle: During operation, a layer of frost will condense on the outer side of the main body 1 of the refrigerator. This frost can be cleaned periodically. During cleaning, the fan 3 and heater 4 are activated. The fan 3 delivers air to the heater 4 through the intake pipe and connecting pipe for heating, and then the air enters the outlet pipe 5 through the delivery pipe. The air is then sprayed out through several nozzles 51, blowing hot air onto the outlet grille 11 to melt the frost. Next, the servo motor 95 is activated, driving the threaded rod 93 to rotate. The rotation of the threaded rod 93 causes the threaded sleeve 92 to move downwards. The downward movement of the threaded sleeve 92, via the fixed rod 91, causes the scraper 7 to move downwards, thus scraping away the frost on the outer side of the main body 1 and causing it to fall into the water collection tank. Furthermore, during the downward movement of the scraper 7, the vertical plate 81 and the movable rod... 82 drives the transmission gear 821 to move downward on the transmission rack plate 822. Under the action of the transmission rack plate 822, the transmission gear 821 will rotate. When the transmission gear 821 rotates, it will drive the movable rod 82 to rotate. When the movable rod 82 rotates, it will drive the cam 83 to rotate. When the cam 83 rotates to contact the push plate 84, it will push it to move upward and squeeze the adjacent return spring 842. When the push plate 84 moves upward, it will drive the striking ball 86 to strike the bottom of the scraper 7 through the striking spring 85. By striking the scraper 7, the physical impact force on the frost is increased, thereby accelerating its removal and improving the scraping effect of the scraper 7. When the cam 83 rotates away from the push plate 84, the push plate 84 will return to its original position under the action of the return spring 842. Since the cam 83 is rotating continuously, it will drive the striking ball 86 to strike the scraper 7 back and forth continuously.

[0042] The scraper 7 involved in this application moves at a moderate speed, so it will not affect the effect of the striking ball 86 striking the scraper 7.

[0043] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A freezer with a defrosting device, comprising a freezer body (1) and a sealing door (2) movably installed above the front side of the freezer body (1), characterized in that: A fan (3) is fixedly installed on the top of the main body (1) near the left side, and an air inlet pipe is fixedly installed on the right side of the fan (3). A connecting pipe is fixedly installed on the left side of the fan (3), and a heater (4) is fixedly installed at the left end of the connecting pipe. A conveying pipe is fixedly installed at the middle of the bottom of the heater (4). The right end of the conveying pipe extends through and into the inner cavity of the main body (1) of the freezer, and an air outlet pipe (5) is fixedly installed thereon. The right side of the air outlet pipe (5) is fixedly installed on the inner wall of the inner cavity of the main body (1). A fixed frame (6) is fixedly installed on the right side of the main body (1), and a water collection trough is opened at the bottom of the inner cavity of the fixed frame (6). A scraper (7) is provided near the top of the inner cavity of the fixed frame (6). A shaking component (8) is installed at the bottom of the scraper (7) near the front and rear sides, and a moving component (9) is installed on the rear side of the scraper (7). The shaking assembly (8) includes a vertical plate (81) fixedly installed at the bottom of the scraper (7) near the rear side and a movable rod (82) movably installed on the left side of the vertical plate (81) near the bottom. A cam (83) is fixedly sleeved on the outside of the movable rod (82), and a push plate (84) is provided above the top of the cam (83). A knocking spring (85) is fixedly installed at the top of the push plate (84) near the middle, and a knocking ball (86) is fixedly installed at the upper end of the knocking spring (85).

2. A freezer with a defrosting device according to claim 1, characterized in that: A sliding rod (841) is slidably installed on the push plate (84) near the front side, and the upper end of the sliding rod (841) is fixedly installed on the scraper (7). A return spring (842) is sleeved on the outer side of the sliding rod (841), and the two ends of the return spring (842) are fixedly installed on the scraper (7) and the push plate (84) respectively.

3. A freezer with a defrosting device according to claim 1, characterized in that: The left end of the movable rod (82) is fixedly installed with a transmission gear (821), and the rear side of the transmission gear (821) is engaged with a transmission rack plate (822). The rear side of the transmission rack plate (822) is fixedly installed on the inner wall of the cavity of the fixed frame (6).

4. A freezer with a defrosting device according to claim 1, characterized in that: Two guide rods (71) are slidably installed on the scraper (7) near the right side, and the guide rods (71) are arranged in front and behind. The upper and lower ends of the guide rods (71) are fixedly installed on the inner wall of the cavity of the fixed frame (6).

5. A freezer with a defrosting device according to claim 1, characterized in that: The heater (4) has L-shaped support rods (41) fixedly installed at the bottom near the front and rear sides, and the right end of the L-shaped support rods (41) is fixedly installed on the main body (1) of the refrigerator.

6. A freezer with a defrosting device according to claim 1, characterized in that: Several nozzles (51) are fixedly installed at equal intervals through the bottom of the air outlet pipe (5).

7. A freezer with a defrosting device according to claim 1, characterized in that: Several air outlet grilles (11) are fixedly installed at equal intervals on the right side of the main body (1) of the refrigeration unit.

8. A freezer with a defrosting device according to claim 1, characterized in that: The moving component (9) includes a fixed rod (91) fixedly installed on the rear side of the scraper (7) and a threaded sleeve (92) fixedly installed on the rear end of the fixed rod (91). A sliding opening is provided on the rear side of the fixed frame (6) near the top. The outer side of the fixed rod (91) is slidably installed in the inner cavity of the sliding opening. A threaded rod (93) is threaded through the middle of the threaded sleeve (92). Two flat plates (94) are fixedly installed on the rear side of the fixed frame (6) near the top. The flat plates (94) are arranged vertically. The upper end of the threaded rod (93) is movably installed on the upper flat plate (94), and the lower end of the threaded rod (93) movably extends through to the outer side of the lower flat plate (94). A servo motor (95) is provided at the bottom of the lower flat plate (94). The output end of the servo motor (95) is fixedly connected to the lower end of the threaded rod (93).

9. A freezer with a defrosting device according to claim 8, characterized in that: The servo motor (95) is fixedly mounted with a support frame (951) on its rear side, and the front end of the support frame (951) is fixedly mounted on the fixed frame (6).

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