Inverted beam, refrigerator and control method

Abstract

The present invention provides a flipping beam, a refrigerator and a control method, relating to the technical field of refrigerators, and solving the technical problems of low working efficiency, high energy consumption and increasing heat load on the refrigerating chamber by only using a heater to heat the surface of the flipping beam to prevent condensation. The flipping beam includes a flipping beam body and a heating assembly capable of heating the surface of the flipping beam body to prevent condensation, and further includes an anti-condensation auxiliary assembly connected to the flipping beam body and capable of improving its heat insulation performance so as to reduce the thermal conductivity coefficient; the anti-condensation auxiliary assembly includes a vacuum cavity arranged in the flipping beam body and a vacuum pumping assembly communicated with the vacuum cavity to maintain the vacuum degree in the cavity. By arranging the anti-condensation auxiliary assembly on the flipping beam, the present invention improves the heat insulation performance of the flipping beam body, prolongs the condensation period, reduces the thermal conductivity coefficient by improving the heat insulation performance, and greatly reduces the energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a flip beam, a refrigerator and a control method. Background Art

[0002] In order to prevent condensation, the heater of the refrigerator flip beam is often turned on to increase the surface temperature of the flip beam, resulting in a large amount of power consumption. An existing control method for the refrigerator flip beam makes the flip beam heating control more accurate and flexible. However, this control method for the refrigerator flip beam still completely relies on the heater to work to increase the surface temperature of the flip beam, and can only reduce the on-off rate of the heater. There is still a problem of high energy consumption, and the problem of low working efficiency of the heater and additional heat load added to the refrigerating chamber is not fundamentally solved. Summary of the Invention

[0003] The purpose of the present invention is to provide a flip beam, a refrigerator and a control method to solve the technical problems existing in the prior art that only uses the heater to heat the surface of the flip beam to prevent condensation, with low working efficiency, high energy consumption and additional heat load added to the refrigerating chamber.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A flip beam provided by the present invention includes a flip beam body and a heating component capable of heating the surface of the flip beam body to prevent condensation, and further includes an anti-condensation auxiliary component connected to the flip beam body and capable of improving its heat insulation performance so as to reduce the thermal conductivity coefficient.

[0006] As a further improvement of the present invention, the anti-condensation auxiliary component includes a vacuum cavity provided in the flip beam body and a vacuum pumping component communicating with the vacuum cavity to maintain the vacuum degree in the cavity.

[0007] As a further improvement of the present invention, the anti-condensation component further includes a filler filled in the vacuum cavity with a low thermal conductivity coefficient and a positive correlation between the thermal conductivity coefficient and the pressure.

[0008] As a further improvement of the present invention, the filler is made of porous material.

[0009] As a further improvement of the present invention, the aperture of the filler is less than 100 μm.

[0010] As a further improvement of the present invention, the filler is micro glass fiber cotton or fumed silica.

[0011] As a further improvement of the present invention, the vacuum pumping component includes an air duct, a vacuum pump and a power cord. One end of the air duct is connected to the vacuum pump, and the other end is communicated with the vacuum cavity through a vacuum hole; one end of the power cord is connected to the vacuum pump, and the other end is connected to the main board of the refrigerator.

[0012] As a further improvement of the present invention, the vacuum pump is fixed on the top of the refrigerator, on the door body or in the compressor compartment.

[0013] A refrigerator provided by the present invention includes the flip beam.

[0014] A control method provided by the present invention, a method for controlling based on the refrigerator, includes the following steps:

[0015] Step S1: Perform the first-level operating condition determination. According to the determination result, the anti-condensation auxiliary component stops operating for a corresponding time A and then returns to the first-level operating condition determination, or alternatively, perform the second-level operating condition determination;

[0016] Step S2: According to the determination result of the second-level operating condition determination, perform the third-level operating condition determination, or alternatively, the heating component starts operating for a corresponding time G and then perform the third-level operating condition determination;

[0017] Step S3: According to the determination result of the third-level operating condition determination, the anti-condensation auxiliary component stops operating for a corresponding time B and then returns to the first-level operating condition determination, or alternatively, perform the fourth-level operating condition determination;

[0018] Step S4: According to the determination result of the fourth-level operating condition determination, the anti-condensation auxiliary component stops operating for a corresponding time C and then returns to the first-level operating condition determination, or alternatively, the anti-condensation auxiliary component starts operating for a corresponding time E and then returns to the fourth-level operating condition determination;

[0019] Step S5: When the continuous operating time F of the anti-condensation auxiliary component reaches the set time, the heating component starts operating for a corresponding time and then perform the fifth-level operating condition determination;

[0020] Step S6: According to the fifth-level operating condition determination result, the anti-condensation auxiliary component and the heating component are turned off for a corresponding time D and then return to the first-level operating condition determination.

[0021] As a further improvement of the present invention, the first-level operating condition determination is a determination of day or night.

[0022] As a further improvement of the present invention, the stop of the anti-condensation auxiliary component is the stop of the vacuum pump.

[0023] As a further improvement of the present invention, the second-level operating condition determination refers to the determination of day or night in the previous determination.

[0024] As a further improvement of the present invention, the determination of the third-level operating condition is whether the ambient temperature T1 is lower than the temperature T2 in the refrigerator compartment and whether the temperature difference meets x.

[0025] As a further improvement of the present invention, the heating component is started as an electric heating start.

[0026] As a further improvement of the present invention, the fourth-stage operating condition is determined by whether the actual pressure value P2 in the vacuum chamber of the tipping beam reaches the required pressure value P1 of the vacuum chamber.

[0027] As a further improvement of the present invention, the anti-condensation auxiliary component is started as the vacuum pump is turned on.

[0028] As a further improvement of the present invention, the fifth-stage operating condition is determined by whether the real-time outer surface temperature T3 of the tipping beam is greater than the ambient temperature T1 and whether the temperature difference satisfies y.

[0029] As a further improvement of the present invention, the anti-condensation auxiliary component and the heating component are turned off as the vacuum pump and the electric heating are turned off.

[0030] The present invention has the following beneficial effects compared with the prior art:

[0031] The tipping beam provided by the present invention improves the heat insulation performance of the tipping beam body and extends the condensation period by setting an anti-condensation auxiliary component, reduces the thermal conductivity by improving the heat insulation performance, and greatly reduces energy consumption.

[0032] The tipping beam provided by the present invention can evacuate the vacuum chamber inside the tipping beam by setting a vacuum chamber inside it and a vacuum pump connected thereto, so as to achieve a low thermal conductivity of the tipping beam, delay the process of condensation caused by the transfer of cold from the refrigerating chamber to the outer surface of the tipping beam. At the same time, the working periods of the vacuum pump and the heater are controllable, and electricity costs can also be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. 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.

[0034] Figure 1 It is a schematic structural diagram of the anti-collision beam of the present invention;

[0035] Figure 2 It is a partial front view of the tipping beam of the present invention;

[0036] Figure 3 It is a schematic structural diagram of the vacuum pumping component in the tipping beam of the present invention;

[0037] Figure 4 It is a schematic structural diagram of the tipping beam of the present invention installed on the refrigerator door body;

[0038] Figure 5 is the logic control diagram of the control method of the present invention;

[0039] Figure 6 is the logic diagram of an implementation of the control method of the present invention.

[0040] In the figure, 1 is the flipping beam; 2 is the vacuum pumping assembly; 21 is the air duct; 22 is the vacuum pump; 23 is the power cord; 24 is the fixing bracket; 100 is the door body. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope protected by the present invention.

[0042] As Figures 1 - 4 shown, the present invention provides a flipping beam 1, which includes a flipping beam body and a heating assembly capable of heating the surface of the flipping beam body to prevent condensation, and further includes an anti-condensation auxiliary assembly connected to the flipping beam body and capable of improving its heat insulation performance so as to reduce the thermal conductivity.

[0043] The flipping beam provided by the present invention improves the heat insulation performance of the flipping beam body by setting an anti-condensation auxiliary assembly, extends the condensation period, reduces the thermal conductivity by improving the heat insulation performance, and greatly reduces the energy consumption.

[0044] As an optional implementation manner of the present invention, the anti-condensation auxiliary assembly includes a vacuum cavity provided in the flipping beam body and a vacuum pumping assembly 2 communicated with the vacuum cavity to maintain the vacuum degree in the cavity.

[0045] By setting a sealed chamber, that is, a vacuum cavity, in the flipping beam and using the vacuum pumping assembly 2 to pump the vacuum in the vacuum cavity to maintain it within a set pressure range, the heat insulation performance of the flipping beam is improved, the thermal conductivity is reduced, the transfer of cold to its surface is delayed, and the loss of cold in the refrigerator is avoided, thereby improving the refrigeration effect of the refrigerator.

[0046] Specifically, the anti-condensation assembly further includes a filler filled in the vacuum cavity with a low thermal conductivity and a thermal conductivity positively correlated with the pressure.

[0047] Furthermore, the filler is made of a porous material.

[0048] Even further, the pore diameter of the filler is less than 100 μm.

[0049] As an alternative embodiment of the present invention, the filler is micro glass fiber cotton or fumed silica. The advantage of such materials is that the pore size is less than 100 μm, there is almost no convective heat transfer, and within a certain range, the thermal conductivity is positively correlated with the pressure, which is easy to control. Moreover, the pressure adjustment range of this material is relatively large, and it can still maintain certain performance under high pressure.

[0050] Fill the inside of the refrigerator turnover beam with fumed silica, and perform an operation of evacuating the cavity irregularly to maintain the cavity pressure to maintain the overall low thermal conductivity of the turnover beam and delay the process of condensation caused by the transfer of cold from the refrigerating chamber to the outer surface of the turnover beam.

[0051] As Figure 3 shown, further, the vacuum pumping assembly 2 includes an air guide pipe 21, a vacuum pump 22 and a power cord 23. One end of the air guide pipe 21 is connected to the vacuum pump 22, and the other end is communicated with the vacuum cavity through a vacuum pumping hole; one end of the power cord 23 is connected to the vacuum pump 22, and the other end is connected to the main board of the refrigerator. The main board of the refrigerator is used to supply power to the vacuum pump 22 for vacuum pumping treatment.

[0052] The turnover beam provided by the present invention can evacuate the vacuum cavity inside the turnover beam by arranging a vacuum cavity inside it and a vacuum pump connected thereto, so as to achieve the low thermal conductivity of the turnover beam, delay the process of condensation caused by the transfer of cold from the refrigerating chamber to the outer surface of the turnover beam. At the same time, the working periods of the vacuum pump and the heater are controllable, and the electricity cost can also be saved.

[0053] As Figure 4 shown, further, the vacuum pump 22 is fixed on the top of the refrigerator, on the door body 100 or in the compressor compartment through a fixing bracket 24.

[0054] The present invention provides a refrigerator, including the above-mentioned turnover beam 1.

[0055] As Figure 5 shown, the present invention provides a control method, a method for controlling based on the turnover beam 1 in the above-mentioned refrigerator, including the following steps:

[0056] Step S1, perform the first-level operating condition determination. According to the determination result, the anti-condensation auxiliary component stops operating for a corresponding time A and then returns to the first-level operating condition determination, or, perform the second-level operating condition determination; it should be noted that in this step, the corresponding time A can be 60 minutes;

[0057] Step S2, according to the determination result of the second-level operating condition determination, perform the third-level operating condition determination, or, the heating component starts operating for a corresponding time G and then perform the third-level operating condition determination; it should be noted that in this step, the corresponding time G can be 3 minutes;

[0058] Step S3: According to the determination result of the third-level operating condition determination, the anti-condensation auxiliary component stops operating for a corresponding time B and then returns to the first-level operating condition determination, or, the fourth-level operating condition determination is executed; it should be noted that in this step, the corresponding time B can be 40 minutes;

[0059] Step S4: According to the determination result of the fourth-level operating condition determination, the anti-condensation auxiliary component stops operating for a corresponding time C and then returns to the first-level operating condition determination, or, the anti-condensation auxiliary component starts operating for a corresponding time E and then returns to the fourth-level operating condition determination; it should be noted that in this step, the anti-condensation auxiliary component stops operating for a corresponding time C can be 40 minutes; the anti-condensation auxiliary component starts operating for a corresponding time E is greater than 2 minutes, where 2 minutes is the self-priming process of the anti-condensation auxiliary component starting, and the remaining time is the time for the vacuum in the vacuum chamber; in this step, after the anti-condensation auxiliary component starts operating for a corresponding time E and returns to the fourth-level operating condition determination, if it is determined that P2 ≤ P1 at this time, the anti-condensation auxiliary component stops and waits for 60 minutes or 20 minutes and then returns to the first-level operating condition determination;

[0060] Step S5: When the continuous operation time of the anti-condensation auxiliary component reaches the set time F, the heating component starts operating for a corresponding time and then executes the fifth-level operating condition determination; it should be noted that in this step, the corresponding time F can be greater than 10 minutes;

[0061] Step S6: According to the fifth-level operating condition determination result, the anti-condensation auxiliary component and the heating component are turned off for a corresponding time D and then return to the first-level operating condition determination. It should be noted that in this step, the corresponding time D can be 20 minutes.

[0062] It should be noted that all the corresponding time lengths in the above 6 steps are different, and need to be selected and set according to the actual situation of the refrigerator.

[0063] Specifically, the first-level operating condition determination is the determination of day or night, that is, to determine whether the refrigerator is operating during the day or at night, and the operating modes are different in different time periods.

[0064] Specifically, the stop of the anti-condensation auxiliary component means the stop of the vacuum pump. Here, it should be noted that the stop of the vacuum pump referred to here means that if the vacuum pump was running before, the vacuum pump is turned off, and if the vacuum pump was not running and was in a stopped state before, it continues to remain in the stopped state.

[0065] Specifically, the determination of the second-level operating condition refers to the previous determination of day or night. That is to say, when making the determination of day or night, when it is determined that the refrigerator is operating during the day or at night, it is also necessary to refer to the result of the previous first-level operating condition determination. If the previous determination result is night and the current determination result is day, it is the alternating period of day and night, and at this time, the electric heating needs to be started.

[0066] Specifically, the determination of the third-level operating condition is whether the ambient temperature T1 is lower than the temperature T2 in the refrigerator compartment, and whether the temperature difference meets x. It should be noted here that x is a pre-set value, which can be large or small and is selected according to actual needs. Specifically, in this embodiment, x can be 8°C.

[0067] Specifically, the start of the heating component is the start of electric heating.

[0068] Specifically, the determination of the fourth-level operating condition is whether the actual pressure value P2 in the vacuum chamber of the turning beam 1 reaches the required pressure value P1 of the vacuum chamber, that is, whether P2 is less than or equal to P1. It should be noted here that the required pressure value P1 of the vacuum chamber is calculated by a formula based on environmental parameters and vacuum chamber parameters.

[0069] The specific calculation process is as follows:

[0070] First, connect to the network to obtain the local time t, and combine the ambient brightness n to determine day / night. Then, obtain the ambient temperature T1, ambient humidity W1, the temperature T2 in the refrigerator compartment, and the real-time outer surface temperature T3 of the turning beam through the temperature and humidity sensor of the refrigerator, calculate the required thermal conductivity K of the current turning beam, further calculate the required pressure P1 of the vacuum chamber, and compare it with the actual pressure P2 of the vacuum chamber.

[0071] Specifically, when other conditions are the same, the smaller the thermal conductivity K, the less likely the cold in the refrigerator compartment is to conduct to the outer surface of the turning beam, and the more difficult it is to condense.

[0072] Through the enthalpy-humidity diagram, it can be obtained that when the ambient temperature is T1 and the ambient humidity is W1, the real-time outer surface temperature T3 of the turning beam needs to be greater than a certain temperature (set as T4) to avoid condensation. K = (T4 - T1) * a2 / (T2 - T4), where a2 is the heat transfer coefficient of ambient air, and the empirical value is 11.3 W / m*m*°C.

[0073] The higher the vacuum degree, the smaller the thermal conductivity K;

[0074] λ = K * n, where n is the horizontal thickness of the vacuum chamber of the turning beam;

[0075] For fumed silica, λ = 4 * 10-3 + 1 / (41.32 + 0.816 / P2 / m), where m = 50 nm;

[0076] Micro glass fiber cotton, λ = 3×10⁻³ + 1 / (41.32 + 0.816 / P² / m), where m = 20μm;

[0077] K can be calculated from T4, T1, and T2. λ is calculated from K, and pressure P is derived from λ. Pressure P can reflect the degree of vacuum.

[0078] Specifically, the anti-condensation auxiliary component is activated by turning on the vacuum pump 22.

[0079] Specifically, the operating condition of the fifth stage is determined by whether the real-time outer surface temperature T3 of the tipping beam 1 is greater than the ambient temperature T1 and whether the temperature difference meets y. It should be noted here that y is a pre-set value, which can be large or small and is selected according to actual needs. Specifically, in this embodiment, y can be 3°C.

[0080] Furthermore, the anti-condensation auxiliary component and the heating component are turned off by turning off the vacuum pump and the electric heating.

[0081] Embodiment 1:

[0082] As Figure 6 shown, first, according to the above formula, based on the ambient temperature T1, the ambient humidity W1, and how many degrees (set as T4) the real-time outer surface temperature T3 of the tipping beam needs to be greater than to avoid condensation, n is the horizontal thickness of the vacuum chamber of the tipping beam, and the temperature T2 in the refrigerator compartment, calculate the pressure value P1 that the vacuum chamber needs to reach;

[0083] The refrigerator applying this embodiment conducts pre-evacuation and airtightness detection on the vacuum chamber and the air duct during entropy inspection. The last 5 minutes of entropy inspection is for vacuum degree testing, and the display board shows the vacuum degree. After evacuating for 2 minutes, the vacuum degree should reach below the pressure P3 (a constant, a set value). After stopping evacuating for 3 minutes, this vacuum degree (pressure P3) shall not rise. It should be noted that P3 is just a randomly set pressure value used for measuring the airtightness test.

[0084] The control rule of the refrigerator of the present invention during use is:

[0085] The first step: Determine day / night based on "local time t" and "ambient brightness n". If "local time t" is after sunset (the sunset time can be preset according to the forecast information of the local meteorological bureau) and "ambient brightness n" is dim, it is regarded as night, and the vacuum pump 22 is directly turned off and re-determined after 60 minutes whether it is day or night; otherwise, it is regarded as day. After determining it is day, it needs to be compared with the result of the previous determination. If the previous determination result is night, turn on the electric heating, heat for 3 minutes, and then proceed to the next step; if the previous determination result is day, directly proceed to the next step.

[0086] Step 2: Compare the "ambient temperature T1" with the "temperature T2 inside the refrigerator compartment". If T1 < T2 - 8, read the "actual pressure P2 in the vacuum chamber" and compare it with the required pressure value P1 of the vacuum chamber to determine whether to turn on the vacuum pump.

[0087] Step 3: If the previous determination is that the vacuum pump needs to be turned on, that is, when P2 is greater than P1, the vacuum pump first self-primed for 2 minutes and then evacuates the vacuum chamber. If the previous determination is that the vacuum pump does not need to be turned on, that is, when P2 ≤ P1, the determination in Step 1 is made again after 40 minutes.

[0088] Step 4: After the vacuum pump is turned on in Step 3, stop working when the "actual pressure value P2 in the vacuum chamber" reaches the required pressure value P1, and return to Step 1 for re-determination after 60 minutes or 20 minutes; (if the "local time t" is after sunset, the time interval for returning to Step 1 for re-determination is 60 minutes, otherwise the next determination interval is 20 minutes).

[0089] In Step 4, when the continuous working time of the vacuum pump > 10 minutes, turn on the electric heater for auxiliary heating until T3 > T1 - 3, then stop the vacuum pump and the electric heater at the same time, and return to Step 1 for re-determination, with a determination interval of 20 minutes.

[0090] It should be noted first here that "inward" is the direction towards the center of the accommodating space, and "outward" is the direction away from the center of the accommodating space.

[0091] In the description of the present invention, it should be understood that 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. indicate the orientation or positional relationship based on the attached Figure 1 The orientation or positional relationship shown 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 a limitation of the present invention.

[0092] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the 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.

[0093] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "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 internal communication of two components or the interaction relationship between two components, 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.

[0094] In the present invention, unless otherwise clearly defined or limited, 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 in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level 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 is at a lower horizontal level than the second feature.

[0095] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0096] As described above, it is only the specific implementation manners of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A control method, characterized in that, Method for controlling a refrigerator, the refrigerator including a flipping beam, the flipping beam including a flipping beam body and a heating component capable of heating the surface of the flipping beam body to prevent condensation, characterized in that it further includes an anti-condensation auxiliary component connected to the flipping beam body and capable of improving its heat insulation performance so as to reduce the thermal conductivity coefficient; The anti-condensation auxiliary component includes a vacuum cavity provided in the flipping beam body and a vacuum pumping component communicating with the vacuum cavity to maintain the vacuum degree in the cavity; The method includes the following steps: Step S1, perform a first-level operating condition determination. According to the determination result, after the anti-condensation auxiliary component stops operating for a corresponding time A, it returns to the first-level operating condition determination, or alternatively, perform a second-level operating condition determination; Step S2, according to the determination result of the second-level operating condition determination, perform a third-level operating condition determination, or alternatively, after the heating component starts operating for a corresponding time G, perform a third-level operating condition determination; Step S3, according to the determination result of the third-level operating condition determination, after the anti-condensation auxiliary component stops operating for a corresponding time B, it returns to the first-level operating condition determination, or alternatively, perform a fourth-level operating condition determination; Step S4, according to the determination result of the fourth-level operating condition determination, after the anti-condensation auxiliary component stops operating for a corresponding time C, it returns to the first-level operating condition determination, or alternatively, after the anti-condensation auxiliary component starts operating for a corresponding time E, it returns to the fourth-level operating condition determination; Step S5, when the continuous operating time F of the anti-condensation auxiliary component reaches the set time, after the heating component starts operating for a corresponding time, perform a fifth-level operating condition determination; Step S6, according to the fifth-level operating condition determination result, after the anti-condensation auxiliary component and the heating component are turned off for a corresponding time D, it returns to the first-level operating condition determination.

2. The control method according to claim 1, wherein The first-level operating condition determination is the determination of day or night.

3. The control method according to claim 1, characterized in that The second-level operating condition determination refers to the determination of day or night in the previous determination.

4. The control method according to claim 1, characterized in that, The determination of the third-level operating condition is whether the ambient temperature T1 is lower than the temperature T2 in the refrigerating chamber and whether the temperature difference satisfies x.

5. The control method according to claim 1, characterized in that The fourth-level operating condition determination is whether the actual pressure value P2 in the vacuum cavity of the flipping beam reaches the pressure value P1 that the vacuum cavity needs to reach.

6. The control method according to claim 1, wherein The fifth-level operating condition determination is whether the real-time outer surface temperature T3 of the flipping beam is greater than the ambient temperature T1 and whether the temperature difference satisfies y.

7. The control method according to claim 1, characterized in that The anti-condensation auxiliary component further includes a filler filled in the vacuum cavity with a low thermal conductivity coefficient and the thermal conductivity coefficient being positively correlated with the pressure.

8. The control method according to claim 7, characterized in that The filler is made of a porous material.

9. The control method according to claim 8, wherein The pore diameter of the filler is less than 100 μm.

10. The control method according to claim 7, characterized in that, The filler is micro glass fiber cotton or fumed silica.

11. The control method according to claim 1, characterized in that The vacuum pumping component includes an air duct, a vacuum pump and a power cord. One end of the air duct is connected to the vacuum pump, and the other end is communicated with the vacuum cavity through a vacuum pumping hole; one end of the power cord is connected to the vacuum pump, and the other end is connected to the main board of the refrigerator.

12. The control method according to claim 11, wherein The vacuum pump is fixed on the top of the refrigerator, on the door body or in the compressor compartment.

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