Anti-condensation structure, refrigerator and anti-condensation method

Abstract

The present invention discloses a condensation prevention structure, a refrigerator and a condensation prevention method. The condensation prevention structure includes a flip beam, a first heating element and a second heating element. The first heating element is disposed along the length direction of the flip beam and is controlled to generate heating heat. The second heating element is fixedly arranged at both ends of the flip beam in the length direction or is controlled to be movable to both ends of the flip beam in the length direction, and generates heat for heating the current end. The first heating element can be used to heat the flip beam so that the temperature of the flip beam is higher than the dew point temperature. The two ends of the flip beam can be heated separately by the second heating element so that condensation is not likely to occur at various places on the flip beam. The second heating element increases the temperature at both ends of the flip beam, making the temperature more uniform at various places on the flip beam and the temperature difference small. Then, the first heating element does not need to increase the heating temperature or extend the heating time. The cooperation of the first heating element and the second heating element improves the utilization rate of thermal energy and reduces the power loss.

Description

Technical Field

[0001] The present invention relates to refrigeration equipment, in particular to an anti-condensation structure, a refrigerator and an anti-condensation method. Background Art

[0002] Currently, refrigerators have different cooling methods such as direct cooling and air cooling. Among them, air cooling has the advantages of uniform cooling and rapid temperature reduction. There will be convection and air circulation inside the air-cooled refrigerator. Compared with traditional direct cooling refrigerators, air-cooled refrigerators may have cold leakage at the door gap of the door body, which increases the risk of external condensation. The current main solution is to set a heating wire in the flip beam to evaporate the condensation by heating the heating wire, but condensation will still exist. The effect of removing condensation is not good, and the thermal energy utilization rate is not high, and there is more power loss. Summary of the Invention

[0003] Based on this, the present invention aims to overcome the problems of poor heating anti-condensation effect and low thermal energy utilization rate in existing refrigerators, and provide an anti-condensation structure, refrigerator and anti-condensation method with better anti-condensation effect and high thermal energy utilization rate.

[0004] The technical solution is as follows:

[0005] An anti-condensation structure, comprising:

[0006] Flip the beam;

[0007] a first heating element, which is arranged in the length direction of the flip beam and is controlled to generate heating heat; and

[0008] The second heating element is fixedly arranged at the two ends of the flip beam in the length direction or is controllably movable to the two ends of the flip beam in the length direction, and generates heat to heat the current end.

[0009] The above-mentioned anti-condensation structure can utilize the first heating element to heat the flip beam so that the temperature of the flip beam is higher than the dew point temperature, which can prevent condensation from occurring on the flip beam. However, due to structural reasons, the two ends of the flip beam are more prone to cold leakage. Therefore, the two ends of the flip beam can be heated separately by the second heating element, so that condensation is not easy to occur anywhere on the flip beam, and the anti-condensation effect is good. The second heating element increases the temperature at the two ends of the flip beam, making the temperature at various locations on the flip beam more uniform and the temperature difference small. Therefore, the first heating element does not need to increase the heating temperature or extend the heating time in order to prevent condensation at both ends of the flip beam. The cooperation of the first heating element and the second heating element improves the thermal energy utilization rate and reduces power loss.

[0010] In one embodiment, the second heating element is slidably engaged with the flip beam, so that the second heating element can reciprocate between the two ends of the flip beam.

[0011] In one embodiment, the first heating element and the second heating element are spaced apart and disposed inside the flipping beam.

[0012] In one embodiment, the flipping beam includes a bottom cover, a middle cover, and an upper cover. The bottom cover and the middle cover enclose a first space. The upper cover is disposed on a side of the middle cover away from the bottom cover. The middle cover and the upper cover enclose a second space. The first heating element is disposed inside the second space, and the second heating element is disposed inside the first space.

[0013] In one embodiment, the above-described anti-condensation structure further includes a moving seat. The moving seat is slidably engaged with the flipping beam. The moving seat is configured to reciprocate between two end portions of the flipping beam. The second heating element is disposed on a side of the moving seat away from the flipping beam.

[0014] In one embodiment, a sliding groove is provided on the flipping beam. The sliding groove is disposed along a length direction of the flipping beam. Two ends of the sliding groove respectively extend to two end portions of the flipping beam. The moving seat is disposed inside the sliding groove. A motor and rollers are provided on the moving seat. The motor is configured to drive the rollers to rotate, and the rollers are configured to drive the moving seat to slide inside the sliding groove.

[0015] In one embodiment, a guiding groove is provided on a bottom surface of the sliding groove. The guiding groove is disposed along the length direction of the sliding groove. The rollers extend into the guiding groove and contact with a bottom surface of the guiding groove.

[0016] In one embodiment, the above-described anti-condensation structure further includes a rotating shaft. Limiting grooves disposed along the length direction of the sliding groove are provided on two side surfaces inside the guiding groove. The rotating shaft passes through the rollers. End portions of the rotating shaft extend into the limiting grooves and are capable of sliding along the limiting grooves. The rollers are spaced apart from two side surfaces of the guiding groove. The motor and the rotating shaft are in gear transmission or belt transmission.

[0017] In one embodiment, the above-described anti-condensation structure further includes a first limit switch and a second limit switch. The first limit switch and the second limit switch are respectively disposed at two end portions of the flipping beam. When the moving seat moves to the first limit switch or the second limit switch, the moving seat stops moving.

[0018] In one embodiment, the second heating element includes at least two heating sub-units. Two of the heating sub-units are respectively a first heating sub-unit and a second heating sub-unit. The first heating sub-unit and the second heating sub-unit are respectively disposed at two end portions of the flipping beam.

[0019] In one embodiment, the anti-condensation structure further includes at least two temperature sensors, wherein the two temperature sensors are respectively disposed at two ends of the flip beam.

[0020] A refrigerator comprises a box body, a door body and an anti-condensation structure as described in any one of the above items, wherein the door body is connected to the box body and is used to open or close the box body, the flip beam is arranged on the door body, and the second heating element is arranged on the flip beam and is used to heat the two ends of the flip beam respectively.

[0021] The above-mentioned refrigerator can utilize the first heating element to heat the flip beam so that the temperature of the flip beam is higher than the dew point temperature, which can prevent condensation from occurring on the flip beam. However, due to structural reasons, the two ends of the flip beam are more prone to cold leakage. Therefore, the two ends of the flip beam can be heated separately by the second heating element, so that condensation is not easy to occur at any part of the flip beam, and the anti-condensation effect is good. The second heating element increases the temperature at the two ends of the flip beam, making the temperature at various parts of the flip beam more uniform and the temperature difference small. Therefore, the first heating element does not need to increase the heating temperature or extend the heating time in order to prevent condensation at both ends of the flip beam. The cooperation of the first heating element and the second heating element improves the thermal energy utilization rate and reduces the power loss.

[0022] In one embodiment, the door body includes a first double-leaf door and a second double-leaf door, and the ends of the first double-leaf door and the second double-leaf door that are away from each other are rotatably connected to the box body respectively, and the flip beam is provided at one end of the first double-leaf door close to the second double-leaf door and / or one end of the second double-leaf door close to the first double-leaf door.

[0023] A method for preventing condensation comprises the following steps:

[0024] Detecting the temperatures of both ends of the flip beam;

[0025] When the temperatures of both ends of the flip beam are lower than a preset temperature, the first heating element heats the flip beam;

[0026] detecting the temperatures of both ends of the flip beam;

[0027] When the temperature of one end portion of the flip beam is greater than or equal to the preset temperature and the temperature of the other end portion of the flip beam is lower than the preset temperature, the second heating element heats the end portion of the flip beam with the lower temperature.

[0028] The above anti-condensation method detects the temperatures at both ends of the flipping beam. When the temperatures at both ends of the flipping beam are both lower than the preset temperature, the first heating element is used to heat the flipping beam to increase the temperature of the flipping beam and prevent condensation from occurring on the flipping beam. Subsequently, the temperatures at both ends of the flipping beam are detected again. If the temperature of one end is greater than or equal to the preset temperature and the temperature of the other end is lower than the preset temperature, it indicates that there may be a situation such as cold leakage at the end with the lower temperature. The second heating element can be used to heat the end with the lower temperature of the flipping beam to further prevent condensation from occurring on the flipping beam. At the same time, the second heating element can assist the heating of the first heating element, so that condensation does not occur at both ends of the flipping beam where cold leakage may occur. The heating temperature and heating time of the first heating element can be reduced. The cooperation of the first heating element and the second heating element improves the utilization rate of thermal energy and reduces power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 Cross-section view of the anti-condensation structure according to the embodiment of the present invention Figure 1 ;

[0032] Figure 2 is Figure 1 the enlarged schematic view at A in

[0033] Figure 3 Cross-section view of the anti-condensation structure according to the embodiment of the present invention Figure 2 ;

[0034] Figure 4 is Figure 3 the enlarged schematic view at B in

[0035] Figure 5 Cross-sectional view of the anti-condensation structure according to the embodiment of the present invention

[0036] Figure 6 Cross-section view of the moving seat according to the embodiment of the present invention

[0037] Figure 7 Assembly schematic view of the moving seat according to the embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 100. Flip beam; 101. First space; 102. Second space; 103. Slide groove; 104. Guide groove; 110. Bottom cover; 120. Middle cover; 130. Upper cover; 200. First heating element; 300. Second heating element; 400. Moving seat; 410. Motor; 420. Roller; 421. Rotating shaft; 500. First limit switch; 600. Temperature sensor. DETAILED DESCRIPTION

[0040] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] like Figures 1 to 4 As shown, one embodiment discloses an anti-condensation structure, including a flip beam 100, a first heating element 200 and a second heating element 300. The first heating element 200 is arranged in the length direction of the flip beam 100 and is controlled to generate heating heat. The second heating element 300 is fixedly arranged at the two end portions in the length direction of the flip beam 100 or is controlled to be movable to the two end portions in the length direction of the flip beam 100, and generates heat to heat the current end portion.

[0042] The above-mentioned anti-condensation structure can use the first heating element 200 to heat the flip beam 100, so that the temperature of the flip beam 100 is higher than the dew point temperature, which can prevent condensation from occurring on the flip beam 100. Due to structural reasons, the two ends of the flip beam 100 are more likely to leak cold. Therefore, the two ends of the flip beam 100 can be heated separately by the second heating element 300, so that condensation is not easy to occur at any part of the flip beam 100, and the anti-condensation effect is good. The second heating element 300 increases the temperature at the two ends of the flip beam 100, so that the temperature at various parts of the flip beam 100 is more uniform and the temperature difference is small. Therefore, the first heating element 200 does not need to increase the heating temperature or extend the heating time in order to prevent condensation at both ends of the flip beam 100. The cooperation between the first heating element 200 and the second heating element 300 improves the thermal energy utilization rate and reduces the power loss.

[0043] Among them, the second heating element 300 can heat both ends of the flip beam 100 at the same time; or one of the ends can be selected for heating according to the situation. Of course, at this time, the second heating element 300 can still heat both ends of the flip beam 100, so that both ends of the flip beam 100 can be heated by the second heating element 300.

[0044] In one embodiment, the second heating element 300 is slidably engaged with the flipping beam 100, enabling the second heating element 300 to reciprocate between the two end portions of the flipping beam 100. At this time, using one second heating element 300 can achieve separate heating of the two end portions of the flipping beam 100, reducing the number and length of the second heating elements 300 and lowering costs.

[0045] Among them, when one of the end portions of the flipping beam 100 needs to be heated, the second heating element 300 moves to the end portion to be heated and heats it.

[0046] Optionally, the second heating element 300 has a multi-segment bent structure, which can increase the heating area and provide a better heating effect.

[0047] Optionally, the first heating element 200 has a multi-segment bent structure, which can increase the heating area and provide a better heating effect.

[0048] In one embodiment, as Figure 2 shown, the first heating element 200 and the second heating element 300 are arranged at intervals inside the flipping beam 100. Both the first heating element 200 and the second heating element 300 are located inside the flipping beam 100, not exposed, and can heat the flipping beam 100, increasing the temperature of the outer surface of the flipping beam 100 and making it not prone to condensation. Moreover, the positions of the first heating element 200 and the second heating element 300 do not interfere with each other.

[0049] In one embodiment, as Figure 1 and Figure 5 shown, the flipping beam 100 includes a bottom cover 110, a middle cover 120, and an upper cover 130. The bottom cover 110 and the middle cover 120 enclose a first space 101. The upper cover 130 is provided on the side of the middle cover 120 away from the bottom cover 110. The middle cover 120 and the upper cover 130 enclose a second space 102. The first heating element 200 is provided in the second space 102, and the second heating element 300 is provided in the first space 101. At this time, the first heating element 200 is arranged closer to the upper cover 130, which can heat the upper cover 130 as a whole and make the upper cover 130 not prone to condensation. At the same time, the second heating element 300 is located on the side of the first heating element 200 away from the upper cover 130. Then, the influence of the first heating element 200 on the temperature of the upper cover 130 is more direct. Even if the second heating element 300 heats the end portion of the flipping beam 100, it will not cause the temperature of the end portion of the upper cover 130 to be too high, which is beneficial to the overall increase in the temperature of the upper cover 130 and the uniform temperature distribution. At the same time, the middle cover 120 can separate the first heating element 200 and the second heating element 300, reducing the mutual influence.

[0050] Optionally, an inner groove is provided on the side of the middle cover 120 away from the bottom cover 110. The middle cover 120 is disposed at the inner groove to enclose a second space 102. At this time, the inner groove can facilitate the installation and positioning of the middle cover 120 and the first heating element 200.

[0051] Specifically, the bottom cover 110 includes a lower cover body, a first end cover body, and a second end cover body. The first end cover body and the second end cover body are respectively disposed at both ends of the lower cover body. The lower cover body and the middle cover 120 cooperate to enclose a first cylindrical structure, and the middle cover 120 and the upper cover 130 cooperate to enclose a second cylindrical structure. The first end cover body and the second end cover body are disposed at both ends of the first cylindrical structure and the second cylindrical structure, so that the whole turnover beam 100 is sealed.

[0052] In one embodiment, as Figure 2 , Figure 4 and Figure 5 shown, the above-mentioned anti-condensation structure further includes a moving seat 400. The moving seat 400 is slidably matched with the turnover beam 100. The moving seat 400 is used for reciprocating movement between the two end portions of the turnover beam 100. The second heating element 300 is disposed on the side of the moving seat 400 away from the turnover beam 100. Through the sliding fit between the moving seat 400 and the turnover beam 100, the moving seat 400 can drive the second heating element 300 to reciprocate between the two end portions of the turnover beam 100.

[0053] Optionally, the middle part of the second heating element 300 is disposed on the side of the moving seat 400 close to the first heating element 200. The two end portions of the second heating element 300 are bent toward the direction away from the second heating element 300 of the moving seat 400. At this time, when the second heating element 300 moves to the end portion of the turnover beam 100, the middle part of the second heating element 300 can heat the outer peripheral surface of the turnover collar, and the end portion of the second heating element 300 can heat the end surface of the turnover beam 100, further preventing condensation on the turnover beam 100.

[0054] In one embodiment, as Figure 2 , Figure 4 and Figure 5 shown, a chute 103 is provided on the turnover beam 100. The chute 103 is arranged along the length direction of the turnover beam 100. The two ends of the chute 103 respectively extend to the two end portions of the turnover beam 100. The moving seat 400 is disposed in the chute 103. A motor 410 and a roller 420 are provided on the moving seat 400. The motor 410 is used to drive the roller 420 to rotate, and the roller 420 is used to drive the moving seat 400 to slide in the chute 103. The chute 103 can guide and position the moving seat 400, making the movement of the moving seat 400 driving the second heating element 300 more stable. At the same time, the motor 410 drives the roller 420 to rotate, so that the roller 420 drives the moving seat 400 to slide in the chute, and the structure is simple.

[0055] The motor 410 and the roller 420 are driven by gears or belts.

[0056] In other embodiments, the anti-condensation structure further includes a first driving member and a screw rod. The screw rod passes through the movable seat 400 and is threadedly engaged with the movable seat 400. The screw rod is arranged along the length direction of the flip beam 100. Both ends of the screw rod are rotatably connected to the flip beam 100. The first driving member is used to drive the screw rod to rotate. The screw rod cooperates with the movable seat 400 to drive the movable seat 400 to slide along the screw rod through the rotation of the screw rod.

[0057] Or the anti-condensation structure further includes a second driving member, which is a pneumatic cylinder or a hydraulic cylinder, and is connected to the movable base 400, and the second driving member drives the movable base 400 to reciprocate between the two ends of the flip beam 100;

[0058] Or the above-mentioned anti-condensation structure also includes a third driving member, a rack is provided in the slide groove 103 along the length of the flip beam 100, the third driving member is a motor 410, a gear is provided on the shaft of the third driving member, the gear is engaged with the rack, and the gear is driven by the third driving member to rotate forward or reverse, so that the movable seat 400 moves back and forth between the two ends of the flip beam 100.

[0059] In one embodiment, Figure 2 、 Figure 4 and Figure 5 As shown, a guide groove 104 is provided on the bottom surface of the chute 103, and the guide groove 104 is arranged along the length direction of the chute 103. The roller 420 extends into the guide groove 104 and contacts the bottom surface of the guide groove 104. Since the roller 420 contacts the bottom surface of the guide groove 104, the rolling of the roller 420 can drive the movable base 400 to move within the chute 103. The provision of the guide groove 104 can guide and limit the roller 420, preventing the roller 420 from deviating, thereby ensuring that the movable base 400 can drive the second heating element 300 to move back and forth stably.

[0060] Optionally, a limiting groove is provided on one of the inner walls of the movable seat 400 and the slide groove 103, and a limiting bar is provided on the other. The limiting bar slides with the limiting groove and can be used to guide and limit the movable seat 400.

[0061] In one embodiment, Figures 4 to 7As shown in the figure, the above-mentioned anti-condensation structure further includes a rotating shaft 421. Limiting grooves are provided on both side surfaces in the guide groove 104 along the length direction of the sliding groove 103. The rotating shaft 421 passes through the roller 420, and the end of the rotating shaft 421 extends into the limiting groove and can slide along the limiting groove. The roller 420 is spaced from both side surfaces of the guide groove 104. The motor 410 and the rotating shaft 421 are in gear transmission or belt transmission. At this time, the roller 420 is spaced from the side surface of the guide groove 104, and no friction will occur to affect the movement of the roller 420. At the same time, the cooperation between the rotating shaft 421 and the limiting groove can prevent the roller 420 from shifting and can ensure that the roller 420 contacts the bottom surface of the guide groove 104, so that the roller 420 can drive the moving seat 400 to move.

[0062] In one embodiment, as Figure 4 shown, the above-mentioned anti-condensation structure further includes a first limit switch 500 and a second limit switch. The first limit switch 500 and the second limit switch are respectively arranged at both ends of the flipping beam 100. When the moving seat 400 moves to the first limit switch 500 or the second limit switch, the moving seat 400 stops moving. The movement stroke of the moving seat 400 can be controlled by the first limit switch 500 and the second limit switch, so that the moving seat 400 can stop moving in time. At this time, the second heating element 300 can accurately heat the end of the flipping beam 100.

[0063] In one embodiment, the second heating element 300 includes at least two heating units. Two of the heating units are a first heating unit and a second heating unit respectively. The first heating unit and the second heating unit are respectively arranged at both ends of the flipping beam 100. At this time, if it is necessary to heat one end or both ends of the flipping beam 100, one of the first heating unit and the second heating unit can be turned on, or the first heating unit and the second heating unit can be turned on simultaneously, which can also achieve the effect of heating the end of the flipping beam 100.

[0064] Optionally, both the first heating unit and the second heating unit are independently controlled and can be turned on or off separately, which can achieve more heating methods and better use effects.

[0065] Optionally, there are at least three heating units, and the heating units are arranged in sequence along the length direction of the flipping beam 100. Different heating units can be turned on according to needs or turned on simultaneously, which can improve the heating efficiency and reduce energy consumption.

[0066] In one embodiment, as Figure 2As shown, the above-mentioned anti-condensation structure further includes at least two temperature sensors 600, and two of the temperature sensors 600 are respectively arranged at both ends of the flipping beam 100. By detecting the temperature at the ends of the flipping beam 100 through the temperature sensors 600, the temperature distribution on the flipping beam 100 can be understood, so as to correspondingly activate the first heating element 200 and / or the second heating element 300 to achieve the anti-condensation effect.

[0067] Optionally, at least three temperature sensors 600 can be set. The temperature sensors 600 and the limit switches 500 are correspondingly arranged on the flipping beam 100. If the temperature sensors 600 sense a lower temperature, the corresponding limit switches 500 can work, so that the moving seat 400 can stop at the above-mentioned limit switches 500 for heating, further preventing condensation caused by uneven temperature on the flipping beam 100.

[0068] Optionally, the temperature sensor 600 is arranged on the middle cover 120 for temperature detection.

[0069] An embodiment discloses a refrigerator, which includes a box body, a door body and the anti-condensation structure of any of the above embodiments. The door body is connected to the box body and is used to open or close the box body. The flipping beam 100 is arranged on the door body, and the second heating element 300 is arranged on the flipping beam 100 for heating both ends of the flipping beam 100 respectively.

[0070] For the above-mentioned refrigerator, the flipping beam 100 can be heated by the first heating element 200 to make the temperature of the flipping beam 100 higher than the dew point temperature, which can prevent condensation on the flipping beam 100. Due to structural reasons, the two ends of the flipping beam 100 are more likely to leak cold. Therefore, the two ends of the flipping beam 100 can be heated respectively by the second heating element 300, so that it is not easy to condensate everywhere on the flipping beam 100, and the anti-condensation effect is good. Moreover, the second heating element 300 increases the temperature at the two ends of the flipping beam 100, making the temperature everywhere on the flipping beam 100 more uniform and the temperature difference smaller. Then, the first heating element 200 does not need to increase the heating temperature or extend the heating time in order to prevent condensation at the two ends of the flipping beam 100. The cooperation of the first heating element 200 and the second heating element 300 improves the thermal energy utilization rate and reduces the power consumption.

[0071] In one embodiment, the door body includes a first pair of opening doors and a second pair of opening doors. One end of the first pair of opening doors and the second pair of opening doors away from each other are respectively rotatably connected to the box body. A turning beam 100 is provided at one end of the first pair of opening doors close to the second pair of opening doors and / or at one end of the second pair of opening doors close to the first pair of opening doors. Since in the structure of the opening doors, the areas at both ends of the turning beam 100 are more likely to leak cold, even if the first heating element 200 is provided, condensation may still occur in the areas at both ends of the turning beam 100. Therefore, a second heating element 300 is provided to heat both ends of the turning beam 100 respectively, which can further prevent condensation from occurring on the turning beam 100 and reduce heat energy loss.

[0072] An embodiment discloses a method for preventing condensation, including the following steps:

[0073] Detect the temperatures at both ends of the turning beam 100;

[0074] When the temperatures at both ends of the turning beam 100 are both lower than the preset temperature, the first heating element 200 heats the turning beam 100;

[0075] Detect the temperatures at both ends of the turning beam 100;

[0076] When the temperature of one end of the turning beam 100 is greater than or equal to the preset temperature and the temperature of the other end of the turning beam 100 is lower than the preset temperature, the second heating element 300 heats the end of the turning beam 100 with a lower temperature.

[0077] In the above method for preventing condensation, the temperatures at both ends of the turning beam 100 are detected. When the temperatures at both ends of the turning beam 100 are both lower than the preset temperature, the first heating element 200 is used to heat the turning beam 100 to increase the temperature of the turning beam 100 and prevent condensation from occurring on the turning beam 100. Subsequently, the temperatures at both ends of the turning beam 100 are detected again. If the temperature of one end is greater than or equal to the preset temperature and the temperature of the other end is lower than the preset temperature, it indicates that the end with a lower temperature may have problems such as cold leakage. The second heating element 300 can be used to heat the end of the turning beam 100 with a lower temperature to further prevent condensation from occurring on the turning beam 100. At the same time, the second heating element 300 can assist the heating of the first heating element 200, so that condensation does not occur at both ends of the turning beam 100 where cold leakage may occur. The heating temperature and heating time of the first heating element 200 can be reduced. The cooperation of the first heating element 200 and the second heating element 300 improves the utilization rate of heat energy and reduces power loss.

[0078] Among them, the preset temperature is greater than or equal to the dew point temperature. For example, the dew point temperature is 30°C. When the temperature on the flipping beam 100 is less than the dew point temperature, condensation may occur. Therefore, the preset temperature is set to be greater than or equal to the dew point temperature. When the detected temperature is lower than the preset temperature, heating is turned on, which can better prevent condensation on the flipping beam 100. Of course, according to different usage environments, the dew point temperature can also be other temperatures.

[0079] Optionally, after the first heating element 200 heats the flipping beam 100, the following steps are further included:

[0080] When the heating time of the first heating element 200 is greater than the preset time, the temperatures at both ends of the flipping beam 100 are detected.

[0081] At this time, there is a certain time interval between two adjacent detections of the temperatures at both ends of the flipping beam 100, ensuring that the temperature is detected again after the first heating element 200 has worked for a period of time, which can better detect whether there is cold leakage at the ends resulting in a lower temperature.

[0082] Among them, the preset time can be 5 minutes. Of course, the preset time can also be adjusted to other times according to the actual situation. Specifically, the temperatures at both ends of the flipping beam 100 are detected every time a preset time elapses.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0084] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

[0085] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0086] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0087] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0089] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

Claims

1. An anti-condensation structure, characterized in that, Comprising; Turning beam; A first heating element disposed along the length direction of the turning beam and controlled to generate heating heat; And A second heating element that can be controllably moved to both ends of the turning beam in the length direction and generates heat for heating the current end; A moving seat that is slidably engaged with the turning beam. The moving seat is used to reciprocate between both ends of the turning beam, and the second heating element is disposed on a side of the moving seat away from the turning beam.

2. The anti-condensation structure according to claim 1, wherein The first heating element and the second heating element are spaced apart and disposed inside the turning beam.

3. The anti-condensation structure according to claim 2, characterized in that, The turning beam includes a bottom cover, a middle cover and an upper cover. The bottom cover and the middle cover enclose a first space. The upper cover is disposed on a side of the middle cover away from the bottom cover. The middle cover and the upper cover enclose a second space. The first heating element is disposed in the second space, and the second heating element is disposed in the first space.

4. The anti-condensation structure according to claim 1, characterized in that, A chute is provided on the turning beam. The chute is arranged along the length direction of the turning beam, and both ends of the chute extend to both ends of the turning beam respectively. The moving seat is disposed in the chute. A motor and rollers are provided on the moving seat. The motor is used to drive the rollers to rotate, and the rollers are used to drive the moving seat to slide in the chute.

5. The anti-condensation structure according to claim 4, characterized in that, A guide groove is provided on the bottom surface of the chute. The guide groove is arranged along the length direction of the chute. The rollers extend into the guide groove and contact the bottom surface of the guide groove.

6. The anti-condensation structure according to claim 5, wherein, It further includes a rotating shaft. Limiting grooves arranged along the length direction of the chute are provided on both side surfaces in the guide groove. The rotating shaft passes through the rollers. The ends of the rotating shaft extend into the limiting grooves and can slide along the limiting grooves. The rollers are spaced apart from both side surfaces of the guide groove. The motor and the rotating shaft are in gear transmission or belt transmission.

7. The anti-condensation structure according to claim 1, wherein It further includes a first limit switch and a second limit switch. The first limit switch and the second limit switch are respectively disposed at both ends of the turning beam. When the moving seat moves to the first limit switch or the second limit switch, the moving seat stops moving.

8. The anti-condensation structure according to any one of claims 1-7, characterized in that, It further includes at least two temperature sensors, and two of the temperature sensors are respectively disposed at both ends of the turning beam.

9. A refrigerator, characterized in that, Comprising a box body, a door body and the anti-condensation structure according to any one of claims 1-8. The door body is connected to the box body and is used to open or close the box body. The turning beam is disposed on the door body, and the second heating element is disposed on the turning beam for heating both ends of the turning beam respectively.

10. The refrigerator according to claim 9, characterized in that, The door body includes a first pair of opening doors and a second pair of opening doors. One ends of the first pair of opening doors and the second pair of opening doors away from each other are respectively rotatably connected to the box body. The turning beam is provided at one end of the first pair of opening doors close to the second pair of opening doors and / or at one end of the second pair of opening doors close to the first pair of opening doors.

11. A method for preventing condensation, applied to the condensation prevention structure according to any one of claims 1-8 or the refrigerator according to any one of claims 9-10, characterized in that, Including the following steps: Detect the temperatures of both ends of the turning beam; When the temperatures of both ends of the turning beam are less than a preset temperature, the first heating element heats the turning beam; Detect the temperatures of both ends of the turning beam; When the temperature of one end of the flipping beam is greater than or equal to the preset temperature and the temperature of the other end of the flipping beam is less than the preset temperature, the second heating element heats the end of the flipping beam with a lower temperature.

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