Defrosting structure of household refrigerator

Abstract

The utility model relates to the technical field of refrigerator defrosting, in particular to a household refrigerator defrosting structure which comprises a shell, two multi-layer wire rollers and two fixing frames, the multi-layer wire rollers are arranged on the two sides of the interior of the shell, the fixing frames are fixedly arranged on the two sides of the interior of the shell, and groove bodies are formed in the positions, corresponding to the multi-layer wire rollers, of the inner wall of the shell. A gear is fixedly arranged on the side, located in the inner groove body of the shell, of the multi-layer wire roller, a rack is arranged below the gear, a spring is arranged on one side of the rack, and a pressing block is arranged on the side, away from the spring, of the rack. Compared with the prior art, the problems that in a traditional heating defrosting technology, the defrosting period is long, and deterioration of food stored in the refrigerator is accelerated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator defrosting, in particular to a household refrigerator defrosting structure. Background Art

[0002] When using a refrigerator or freezer, if the frost layer on the surface of the evaporator reaches 5mm, it should be defrosted. If the frost layer is too thick, it will produce a large thermal resistance, affect the efficiency of the refrigerator's heat exchange, and cause a decrease in refrigeration capacity, which will deteriorate the food storage environment and cause more waste of electricity. Therefore, users need to defrost refrigerators and freezers regularly.

[0003] In the prior art, a Chinese patent document with publication number CN209085159U, "An electric heating tube structure for refrigerator defrosting", proposes an electric heating tube structure for refrigerator defrosting, including an electric heating tube, the electric heating tube is placed at the lower part of the evaporator where frost is easy to form, the electric heating tube is connected by a straight tube part and a bent part to form an integrated heating structure, one end of the straight tube part is connected to the wiring through a vulcanized rubber joint, and one end of the bent part is also connected to the wiring through a vulcanized rubber joint. The utility model has a simple structure and is easy to use. The straight tube part and the bent part are in the same plane, which effectively concentrates the heat mainly on one side of the electric heating tube plane, while taking into account the heat demand on the other side of the electric heating tube plane. By placing the utility model at the lower part of the evaporator where frost is prone to form, the electric heating tube can concentrate heat to melt the frost layer in the frosted part, thereby achieving efficient defrosting. However, consistent with the traditional method, the above technical solution uses heating to melt the ice layer to achieve the defrosting effect. This technical solution has a long defrosting cycle and will have the adverse effect of accelerating the deterioration of food stored in the refrigerator. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a household refrigerator defrosting structure to solve the problem of long defrosting cycle and accelerated deterioration of food stored in the refrigerator.

[0005] Based on the above purpose, the utility model provides a defrosting structure for a household refrigerator, comprising: a shell, two multi-layer wire rollers and two fixed frames, the multi-layer wire rollers are arranged on both sides of the interior of the shell, the fixed frames are fixedly arranged on both sides of the interior of the shell, a groove body is opened inside the inner wall of the shell at a position corresponding to the multi-layer wire rollers, the multi-layer wire roller is located on one side of the internal groove body of the shell and a gear is fixedly arranged, a rack is arranged below the gear, a spring is arranged on one side of the rack, and a pressure block is arranged on the side of the rack away from the spring.

[0006] Preferably, six winding layers are arranged inside the shell, a scraper is arranged on the side of the winding layer close to the fixed frame, a traction line is arranged in the middle of the scraper, a winding roller is arranged on the side of the winding layer away from the fixed frame, and a suction cup is arranged at both ends of the winding roller.

[0007] Preferably, a first slot is provided on one side of the fixing frame, and a second slot is provided on the other side of the fixing frame. A wire clamping roller is provided inside the second slot, and an adjusting knob is provided on one side of the wire clamping roller.

[0008] Preferably, the scraper extends from the traction wire and is wound around the multi-layer wire roller, and the three groups of traction wires are wound at three different coil positions.

[0009] Preferably, the adjusting knob and the wire clamping roller are threadedly connected, the wire clamping roller is located inside the fixing frame, the adjusting knob is located outside the fixing frame, and the bottom diameter of the adjusting knob is larger than the width of the second groove body.

[0010] Preferably, the rack and the gear are meshingly connected, and have a large gear ratio.

[0011] Preferably, both the traction wire and the suction cup can be made of polyurethane material.

[0012] Preferably, the rack, the gear and the spring are accommodated in a groove opened inside the inner wall of the shell at a position corresponding to the multi-layer wire roller.

[0013] Preferably, a coil spring is arranged inside the winding roller.

[0014] Beneficial effects of the utility model:

[0015] 1. A household refrigerator defrosting structure, by providing a pressure block and a gear rack, allows the device to be used without the aid of other external force conditions, and only through the opening and closing of the door in daily use to operate the device to produce a defrosting effect, thereby reducing the difficulty of defrosting, increasing the frequency of defrosting, and being more reasonable and lightweight, thereby improving the practicality of the device.

[0016] 2. This household refrigerator defrosting structure, by providing the cooperation between the adjustment knob and the wire clamping roller, enables the device to better adapt to refrigerators of various sizes, and adjusts the defrosting device according to different internal structures, thereby enhancing the adaptability of the device and improving the practical value of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the adjustment structure of the utility model;

[0021] Figure 4 For this utility model Figure 2 A schematic diagram of the structure at center ；

[0022] Figure 5 It is a schematic diagram of the scraping structure of the utility model.

[0023] The markings in the figure are:

[0024] 1. Shell; 2. Multi-layer wire roller; 3. Fixed frame; 4. Winding layer; 5. First trough; 6. Adjustment knob; 7. Pressure block; 8. Winding roller; 9. Suction cup; 10. Rack; 11. Gear; 12. Spring; 13. Second trough; 14. Wire clamping roller; 15. Pulling line; 16. Scraper. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figures 1 to 5 As shown, a household refrigerator defrosting structure comprises: a shell 1, two multi-layer wire rollers 2 and two fixing frames 3, the multi-layer wire rollers 2 are arranged on both sides of the interior of the shell 1, the fixing frames 3 are fixedly arranged on both sides of the interior of the shell 1, a groove body is opened inside the inner wall of the shell 1 at a position corresponding to the multi-layer wire rollers 2, the multi-layer wire rollers 2 are located on one side of the inner groove body of the shell 1 and a gear 11 is fixedly arranged, a rack 10 is arranged below the gear 11, a spring 12 is arranged on one side of the rack 10, and a pressure block 7 is arranged on the side of the rack 10 away from the spring 12, by providing the pressure block 7 and the gear 11 and the rack 10, the device can be used without other external force conditions, and the device can be operated only by the opening and closing of the door in daily use to produce a defrosting effect, thereby reducing the defrosting effect. The working difficulty is reduced, and it is more reasonable and light, which improves the practicability of the device. The setting of the fixing frame 3 and the design of the spring 12 and the pressure block 7 make the defrosting structure more stable during operation, and reduce the failure or error caused by vibration or instability. The gear 11 and the rack 10 transmission mechanism are adopted, the structure is simple and reliable, the possibility of failure is reduced, and the reliability and stability of the defrosting structure are improved. During use, the food inside the refrigerator is taken out to open and close the door. When the door is opened, the pressure block 7 will pop out under the action of the spring 12, thereby driving the rack 10 to move outward, and then driving the gear 11 to rotate, driving the multi-layer wire roller 2 to take up the wire, pulling out the winding layer 4, and scraping the inner wall of the refrigerator to make the ice layer inside the refrigerator fall off.

[0028] Further, such as Figure 2 as well as Figure 3As shown, six winding layers 4 are arranged inside the shell 1, a scraper 16 is arranged on the side of the winding layer 4 close to the fixed frame 3, a traction line 15 is arranged in the middle of the scraper 16, a winding roller 8 is arranged on the side of the winding layer 4 away from the fixed frame 3, and a suction cup 9 is arranged at both ends of the winding roller 8, a first groove 5 is opened on one side of the fixed frame 3, a second groove 13 is opened on the other side of the fixed frame 3, a wire clamping roller 14 is arranged inside the second groove 13, and an adjusting knob 6 is arranged on one side of the wire clamping roller 14, the arrangement of the six winding layers 4 and the combination of the scraper 16, the traction line 15 and the winding roller 8 constitute a complete defrosting system, which can effectively clear the refrigerator. Internal frost, the multi-level design makes the defrosting process more thorough, can effectively reduce the accumulation of frost and extend the service life of the refrigerator. Suction cups 9 are arranged at both ends of the winding roller 8, which can firmly fix the scraper 16 and the traction line 15 to ensure that they will not loosen or fall off during operation, thereby improving the stability and reliability of the defrosting system. During use, the scraper 16 is pulled by the traction line 15 to scrape the inner wall of the refrigerator. When closing the door, the winding layer 4 can be rolled up and stored under the action of the winding roller 8. The suction cup 9, the adjustment knob 6 and the wire clamping roller 14 can better and more flexibly fix the defrosting device at the required position.

[0029] Further, such as Figure 4 as well as Figure 5 As shown, the scraper 16 extends from the traction line 15 and is wound on the multi-layer wire roller 2, and the three groups of traction lines 15 are wound at three different coil positions. The traction lines 15 wound at different coil positions can work without interfering with each other, thereby improving the stability of the device operation. During use, the flexibility of the device is ensured by winding the three different traction lines 15 into different coil positions.

[0030] Further, such as Figure 3 As shown, the adjusting knob 6 and the wire clamping roller 14 are threadedly connected. The wire clamping roller 14 is located inside the fixing frame 3, and the adjusting knob 6 is located outside the fixing frame 3. The bottom diameter of the adjusting knob 6 is larger than the width of the second groove body 13. The two threadedly connected parts can be better adjusted and matched, thereby achieving a flexible adaptation effect. The stability of the device operation is also guaranteed by the size limitation.

[0031] Further, such as Figure 4 As shown, the rack 10 and the gear 11 are meshed and connected, and have a large gear ratio. The large gear ratio allows the device to achieve a larger number of rotations through a smaller linear stroke, thereby achieving a better pulling and retracting effect on the winding layer 4.

[0032] Further, such as Figure 5As shown, the traction line 15 and the suction cup 9 can both be made of polyurethane material. Polyurethane material has excellent cold resistance and toughness, which can ensure the stability and safety of the device operation and extend the service life of the device.

[0033] Further, such as Figure 1 As shown, the groove body opened inside the inner wall of the shell 1 at a position corresponding to the multi-layer wire roller 2 accommodates the rack 10, the gear 11 and the spring 12, and the power structure is arranged inside the side wall of the refrigerator, which can ensure that unnecessary damage will not be caused by the exposure of the movable structure during use, thereby improving the safety and practicality of the device.

[0034] Further, such as Figure 2 As shown, a coil spring (not shown in the figure) is arranged inside the winding roller 8. The winding spring is used to achieve the winding effect, which can better save the cost of the device and improve the practicality of the device.

[0035] Working principle: During use, when the refrigerator door is opened, the pressure block 7 will pop out under the action of the spring 12, thereby driving the rack 10 to move outward, and then driving the gear 11 to rotate, driving the multi-layer wire roller 2 to perform a wire winding operation through the traction line 15, pulling out the winding layer 4, and driving the scraper 16 to scrape the inner wall of the refrigerator to make the ice layer inside the refrigerator fall off; when the refrigerator door is closed, the pressure block 7 will press the rack 10 to drive the gear 11 to rotate, driving the multi-layer wire roller 2 to perform a wire unwinding operation, so that the winding layer 4 is stored in the inside of the recovery roller 8.

[0036] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0037] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A household refrigerator defrosting structure, characterized in that: include: A shell (1), two multi-layer wire rollers (2) and two fixed frames (3), wherein the multi-layer wire rollers (2) are arranged on both sides of the interior of the shell (1), and the fixed frames (3) are fixedly arranged on both sides of the interior of the shell (1). A groove body is provided inside the inner wall of the shell (1) at a position corresponding to the multi-layer wire rollers (2). A gear (11) is fixedly arranged on one side of the groove body inside the shell (1) where the multi-layer wire rollers (2) are located, a rack (10) is arranged below the gear (11), a spring (12) is arranged on one side of the rack (10), and a pressure block (7) is arranged on the side of the rack (10) away from the spring (12).

2. A household refrigerator defrosting structure according to claim 1, characterized in that: Six winding layers (4) are arranged inside the shell (1); a scraper (16) is arranged on the side of the winding layer (4) close to the fixed frame (3); a traction line (15) is arranged in the middle of the scraper (16); a winding roller (8) is arranged on the side of the winding layer (4) away from the fixed frame (3); and a suction cup (9) is arranged at both ends of the winding roller (8).

3. A household refrigerator defrosting structure according to claim 1, characterized in that: A first groove (5) is provided on one side of the fixing frame (3), and a second groove (13) is provided on the other side of the fixing frame (3). A wire clamping roller (14) is provided inside the second groove (13), and an adjusting knob (6) is provided on one side of the wire clamping roller (14).

4. A household refrigerator defrosting structure according to claim 2, characterized in that: The scraper (16) extends from the pulling wire (15) and is wound on the multi-layer wire roller (2), and three groups of the pulling wires (15) are wound at three different coil positions.

5. A household refrigerator defrosting structure according to claim 3, characterized in that: The adjusting knob (6) and the wire clamping roller (14) are threadedly connected; the wire clamping roller (14) is located inside the fixing frame (3); the adjusting knob (6) is located outside the fixing frame (3); and the bottom diameter of the adjusting knob (6) is greater than the width of the second groove body (13).

6. A household refrigerator defrosting structure according to claim 1, characterized in that: The rack (10) and the gear (11) are meshingly connected, and the rack (10) and the gear (11) have a large gear ratio.

7. A household refrigerator defrosting structure according to claim 2, characterized in that: The pulling line (15) and the suction cup (9) can both be made of polyurethane material.

8. A household refrigerator defrosting structure according to claim 1, characterized in that: The rack (10), the gear (11) and the spring (12) are accommodated in a groove body opened inside the inner wall of the housing (1) at a position corresponding to the multi-layer wire roller (2).

9. A household refrigerator defrosting structure according to claim 2, characterized in that: A coil spring is arranged inside the winding roller (8).

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