A refrigerator and a method for alarming a falling risk of a door body of the refrigerator

Abstract

The application discloses a refrigerator and a door body falling risk warning method of the refrigerator. The refrigerator comprises a cabinet, at least one storage compartment is formed in the cabinet, and the storage compartment is used for storing articles; a door body is a flat opening door, is arranged at an opening of the storage compartment, and is connected to the cabinet through a hinge. The door body is used for realizing opening or closing of the storage compartment. A distance between a preset detection position on the door body and a preset reference position on the refrigerator is detected in real time as a door body distance. The preset reference position is preset and is not located on the door body. When the door body distance is greater than a preset door body distance threshold, it is determined that the hinge is loose, and it is determined that the refrigerator has a door body falling risk. The application can monitor the door body falling risk in real time, timely reminds a user when the door body falling risk occurs, and guarantees personal safety of the user.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a refrigerator and a refrigerator door falling risk alarm method. Background Art

[0002] With technological advancements and rising living standards, refrigerators have become an indispensable household appliance. Currently, refrigerator doors are typically connected to the main unit via hinges. Over time, these hinges can become loose, causing the door to fall. The hinge shaft can even break, causing the door to fall off and potentially injure someone. Therefore, a door falling due to a loose or even broken hinge shaft poses a significant safety hazard to consumers. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a refrigerator and a refrigerator door falling risk alarm method, which can monitor the door falling risk in real time so as to promptly remind the user when the door falling risk occurs to ensure the user's personal safety.

[0004] To achieve the above object, an embodiment of the present invention provides a refrigerator, comprising:

[0005] The box body has at least one storage compartment formed therein for storing items;

[0006] A door body, which is a swing door and is provided at the opening of the storage compartment. The door body is connected to the box body via a hinge and is used to open or close the storage compartment.

[0007] Controller for:

[0008] detecting in real time the distance between a preset detection position on the door body and a preset reference position on the refrigerator as the door body spacing; wherein the preset reference position is pre-set and is not located on the door body;

[0009] When the door body distance is greater than a preset door body distance threshold, it is determined that the hinge is loose, so as to determine that there is a risk of the door body of the refrigerator falling.

[0010] As an improvement to the above solution, the refrigerator further includes a first magnet, a second magnet, and an inductance device; the first magnet is located at the preset detection position, the second magnet and the inductance device are located at the preset reference position, the second magnet is disposed adjacent to the first magnet, and the inductance device is located on a side of the second magnet away from the first magnet; when the distance between the preset detection position and the preset reference position changes, the force between the first magnet and the second magnet causes the inductance of the inductance device to change accordingly;

[0011] The real-time detection of the distance between a preset detection position on the door body and a preset reference position on the refrigerator as the door body spacing includes:

[0012] detecting the inductance of the inductor device in real time;

[0013] The distance between the preset detection position and the preset reference position is calculated according to the current inductance of the inductor device to obtain the door body spacing.

[0014] As an improvement to the above solution, adjacent surfaces of the first magnet and the second magnet have the same polarity; the inductor device includes a magnetic core, an inductor coil, a spring, a variable platform, and a fixed platform; the first surface of the variable platform is fixedly connected to a surface of the second magnet away from the first magnet; the first end of the spring is fixedly connected to the second surface of the variable platform; the second end of the spring is fixedly connected to the first surface of the fixed platform; the inductor coil is close to the second surface of the fixed platform; the first end of the magnetic core is fixedly connected to the second surface of the variable platform; the second end of the magnetic core passes through the through holes in the spring and the fixed platform and enters the inductor coil;

[0015] The calculating the distance between the preset detection position and the preset reference position based on the current inductance of the inductor device to obtain the door body spacing includes:

[0016] Calculating the depth of the magnetic core entering the inductor coil according to the current inductance of the inductor coil;

[0017] Calculating the length of the spring according to the depth of the magnetic core entering the inductor coil;

[0018] The distance between the preset detection position and the preset reference position is calculated according to the length of the spring to obtain the door body spacing.

[0019] As an improvement to the above solution, the controller is further configured to:

[0020] Determining whether a sudden change occurs in the door body spacing;

[0021] When it is determined that the door body spacing has suddenly changed, it is determined that the hinge is broken, so as to determine that there is a risk of the door body of the refrigerator falling off.

[0022] As an improvement to the above solution, the step of determining whether a sudden change occurs in the door body spacing includes:

[0023] Taking a preset time as a detection cycle, calculating the rate of change of the door-body distance corresponding to the start time and the door-body distance corresponding to the end time within each detection cycle;

[0024] Calculate the ratio of the change rate corresponding to the current detection period to the change rate of the previous detection period;

[0025] When the ratio is greater than a preset ratio threshold, it is determined that a sudden change occurs in the door-to-door distance.

[0026] As an improvement to the above solution, the refrigerator further includes an alarm device, and the controller is further configured to:

[0027] When it is determined that there is a risk of the door body falling, a first alarm control instruction is sent to the alarm device to enable the alarm device to perform a preset first alarm action.

[0028] As an improvement to the above solution, the refrigerator further includes an alarm device, and the controller is further configured to:

[0029] When it is determined that there is a risk of the door body falling off, a second alarm control instruction is sent to the alarm device to enable the alarm device to perform a preset second alarm action.

[0030] An embodiment of the present invention further provides a refrigerator door falling risk alarm method, the refrigerator comprising:

[0031] The box body has at least one storage compartment formed therein for storing items;

[0032] A door body, which is a swing door and is provided at the opening of the storage compartment. The door body is connected to the box body via a hinge and is used to open or close the storage compartment.

[0033] The method comprises:

[0034] detecting in real time the distance between a preset detection position on the door body and a preset reference position on the refrigerator as the door body spacing; wherein the preset reference position is pre-set and is not located on the door body;

[0035] When the door body distance is greater than a preset door body distance threshold, it is determined that the hinge is loose, so as to determine that there is a risk of the door body of the refrigerator falling.

[0036] As an improvement to the above solution, the refrigerator further includes a first magnet, a second magnet, and an inductance device; the first magnet is located at the preset detection position, the second magnet and the inductance device are located at the preset reference position, the second magnet is disposed adjacent to the first magnet, and the inductance device is located on a side of the second magnet away from the first magnet; when the distance between the preset detection position and the preset reference position changes, the force between the first magnet and the second magnet causes the inductance of the inductance device to change accordingly;

[0037] The distance between the preset detection position on the door body and the preset reference position on the refrigerator is detected in real time as a door body distance, including:

[0038] The inductance of the inductance device is detected in real time.

[0039] According to the inductance of the inductance device, the distance between the preset detection position and the preset reference position is calculated to obtain the door body distance.

[0040] As an improvement of the above scheme, the method further includes:

[0041] It is judged whether the door body distance mutates.

[0042] When it is judged that the door body distance mutates, it is judged that the hinge is broken, so as to judge that the refrigerator has a door body falling risk.

[0043] The judgment of whether the door body distance mutates includes:

[0044] A preset time length is taken as a detection period, and the change rate of the door body distance corresponding to the starting time and the door body distance corresponding to the ending time in each detection period is calculated.

[0045] The ratio of the change rate corresponding to the current detection period and the change rate of the last detection period is calculated.

[0046] When the ratio is greater than a preset ratio threshold, it is judged that the door body distance mutates.

[0047] Compared with the prior art, the refrigerator and the door body falling risk warning method of the refrigerator disclosed by the application include: a cabinet and a door body, the door body is arranged at the opening of a storage compartment, and the door body is movably connected to the cabinet, and the door body is used to realize the opening or closing of the storage compartment; the distance between the preset detection position on the door body and the preset reference position on the refrigerator is detected in real time as a door body distance; wherein the preset reference position is a position set in advance and not located on the door body; when the door body distance is greater than a preset door body distance threshold, it is judged that there is a door body falling risk. By using the technical means of the embodiment of the application, the distance between the door body and the preset reference position is detected in real time to judge the falling degree of the door body, and when the falling degree of the door body is large, it is considered that there is a door body falling risk, so as to timely issue a warning to the user when the door body falling risk occurs, remind the user to perform maintenance or after-sales intervention, and ensure the personal safety of the user. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a first structure schematic view of a refrigerator provided by the embodiment of the application;

[0049] Figure 2 is a first flowchart of the work performed by the controller of the refrigerator in the embodiment of the present application;

[0050] Figure 3 is a structural diagram of the door body in the normal state in the embodiment of the present application;

[0051] Figure 4 is a structural diagram of the door body in the falling state in the embodiment of the present application;

[0052] Figure 5 is a second flowchart of the work performed by the controller of the refrigerator in the embodiment of the present application;

[0053] Figure 6 is a schematic diagram of the installation of the first magnet, the second magnet and the inductance device in the embodiment of the present application;

[0054] Figure 7 is a third flowchart of the work performed by the controller of the refrigerator in the embodiment of the present application;

[0055] Figure 8 is a schematic diagram of the principle of calculating the rate of change of the distance between the door bodies in the embodiment of the present application;

[0056] Figure 9 is a fourth flowchart of the work performed by the controller of the refrigerator in the embodiment of the present application;

[0057] Figure 10 is a fifth flowchart of the work performed by the controller of the refrigerator in the embodiment of the present application. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0059] Referring to Figure 1 is a first structural diagram of a refrigerator provided by the embodiment of the present application. The embodiment of the present application provides a refrigerator 10, which comprises a cabinet 11. At least one storage room, such as a refrigeration room and / or a freezing room, is formed in the cabinet, which is used to store items with preservation or freezing requirements. The refrigerator further comprises a refrigeration system, which is used to perform the refrigeration operation of the refrigerator.

[0060] It should be noted that the refrigerator provides cold energy transmission into the storage chamber through the refrigeration system to maintain the storage chamber in a constant low temperature state. Specifically, the refrigeration system of the refrigerator in the embodiment of the application is composed of a compressor, a condenser, a drying filter, a capillary tube and an evaporator, and the working process of the refrigeration system includes compression, condensation, throttling and evaporation.

[0061] In the compression process, the refrigerator power cord is plugged in, and the compressor starts to work when the box has a refrigeration demand. The low-temperature and low-pressure refrigerant is sucked into the compressor cylinder, compressed into high-temperature and high-pressure superheated gas, and discharged into the condenser. In the condensation process, the high-temperature and high-pressure refrigerant gas is cooled by the condenser, and the temperature gradually decreases to become saturated vapor at room temperature and high pressure, and further cooled to saturated liquid, and the temperature no longer decreases. At this time, the temperature is called the condensation temperature. The pressure of the refrigerant remains almost unchanged during the entire condensation process. In the throttling process, the saturated liquid refrigerant after condensation flows into the capillary tube after filtering out water and impurities by the drying filter, and is throttled and decompressed by the capillary tube. The refrigerant becomes wet vapor at room temperature and low pressure. In the evaporation process, heat is absorbed in the evaporator to vaporize, not only reducing the temperature of the evaporator and its surroundings, but also making the refrigerant into a low-temperature and low-pressure gas. The refrigerant from the evaporator returns to the compressor again to repeat the above process, transferring heat in the refrigerator to air outside the box to achieve the purpose of refrigeration.

[0062] The refrigerator 10 further comprises a door body 12 arranged at the opening of the storage chamber, and the door body is movably connected to the box body 11. The door body 12 is used to open or close the storage chamber.

[0063] In the embodiment of the application, the door body 12 is a flat door, and the door body 12 is connected to the box body 11 by a hinge connection.

[0064] It should be noted that since the door body 12 is movably connected to the box body 11, as the use time of the refrigerator increases, the door body 12 will gradually sag. Taking the example of the hinge connection of the door body 12 to the box body 11, when the hinge connection is loose, the door body 12 will gradually sag, which poses a hidden danger to the safety of the user.

[0065] The refrigerator further comprises a controller, referring to Figure 2 is the first flowchart of the working process of the controller of the refrigerator in the embodiment of the application. The controller is used to execute steps S11 to S12.

[0066] S11, detecting a distance between the detection position on the door body and the preset reference position on the refrigerator as a door body distance in real time, wherein the preset reference position is a position that is preset and not located on the door body;

[0067] S12, when the door body distance is greater than a preset door body distance threshold, determining that the hinge is loose to determine that the refrigerator has a door body falling risk.

[0068] In the embodiment of the present application, a certain position on the door body 12 is selected as the detection position, and a certain fixed position on the refrigerator is obtained as the preset reference position. The component where the preset reference position is located is preferably a structural component that will not change position on the refrigerator. For example, the preset reference position can be set on the cabinet 11 of the refrigerator, on the cross beam of the refrigerator, or on the door body of the refrigerator configured as a drawer type storage compartment.

[0069] It can be understood that when the hinge is loose, the door body 12 will fall, and the distance between the detection position on the door body 12 and the preset reference position will change.

[0070] The controller detects the distance between the detection position on the door body 12 and the preset reference position in real time, which is recorded as the door body distance d. A door body distance threshold ds is preset to represent the falling degree of the door body 12. When it is detected that the door body distance satisfies d>ds, it indicates that the hinge is loose, the falling degree of the door body 12 is large, and it is determined that the refrigerator currently has a door body falling risk. When the door body distance satisfies d≤ds, it indicates that the hinge is loose or not obviously loose, the falling degree of the door body 12 is small or does not occur, and it is determined that the refrigerator currently does not have a door body falling risk.

[0071] By using the technical means of the embodiment of the present application, the falling degree of the door body is determined by detecting the distance between the door body and the preset reference position in real time. When the falling degree of the door body is large, it is considered that there is a door body falling risk, so that a warning can be given to the user in time when the door body falling risk occurs, reminding the user to perform maintenance or after-sales intervention, and ensuring the personal safety of the user.

[0072] In some embodiments, the embodiments of the present application are further implemented on the basis of the above-mentioned embodiments, and the embodiments of the present application further optimize the manner of detecting the door distance. In the embodiments of the present application, the refrigerator 10 further comprises a first magnet 13, a second magnet 14 and an inductance device 15. The first magnet 13 is arranged at the preset detection position on the door body 12, the second magnet 14 and the inductance device 15 are arranged at the preset reference position on the refrigerator, the second magnet 14 is arranged adjacent to the first magnet 13, and the inductance device 15 is located on the side of the second magnet 14 away from the first magnet 13. When the distance between the preset detection position and the preset reference position changes, the acting force between the first magnet 13 and the second magnet 14 causes the inductance of the inductance device to change accordingly.

[0073] Referring to Figure 3 and Figure 4 , Figure 3 is a structural schematic diagram of the door body in a normal state in the embodiments of the present application, Figure 4 is a structural schematic diagram of the door body in a falling state in the embodiments of the present application. The refrigerator comprises a refrigerating chamber and a freezing chamber, the door body of the refrigerating chamber is connected to the cabinet 11 through a hinge, the door body of the freezing chamber is a drawer type, the drawer type door body has no hinge and basically does not appear to fall, the preset reference position is arranged on the drawer type door body of the freezing chamber, for the door body of the refrigerating chamber, when the door body falls, the distance between the preset detection position and the preset reference position changes, the acting force between the first magnet 13 and the second magnet 14 changes, thereby causing the inductance of the inductance device to change accordingly.

[0074] Referring to Figure 5 is a second flowchart of the work performed by the controller of the refrigerator in the embodiments of the present application, step S11, that is, the distance between the preset detection position on the door body and the preset reference position on the refrigerator is detected in real time as the door distance, comprising steps S111 to S112:

[0075] S111, the inductance of the inductance device is detected in real time;

[0076] S112, the distance between the preset detection position and the preset reference position is calculated according to the inductance of the inductance device at present, and the door distance is obtained.

[0077] In the embodiments of the present application, the controller detects the inductance L of the inductance device 15 in real time, and further derives and calculates the distance between the preset detection position and the preset reference position according to the inductance L, thereby obtaining the door distance d.

[0078] In an alternative embodiment, the inductance of the inductance device 15 at different distances between the preset detection position and the preset reference position is obtained in advance through experiments, tests or the like, so as to form a corresponding relationship table of inductance and distance, and the corresponding relationship table is stored for subsequent application.

[0079] When the controller detects the inductance L of the inductance device 15, the corresponding relationship table is called to obtain the distance corresponding to the inductance L, and the distance between the preset detection position and the preset reference position is obtained, so as to determine the door body distance d.

[0080] In another alternative embodiment, a function relationship formula of the inductance L of the inductance device 15 and the distance between the preset detection position and the preset reference position is fitted in advance, when the controller detects the inductance L of the inductance device 15, the distance between the preset detection position and the preset reference position is calculated by substituting into the function relationship formula, so as to determine the door body distance d.

[0081] In some embodiments, referring to Figure 6 is a mounting schematic view of the first magnet, the second magnet and the inductance device, the adjacent surfaces of the first magnet 13 and the second magnet 14 are of the same polarity. The inductance device 15 includes a magnetic core 151, an inductance coil 152, a spring 153, a variable table 154 and a fixed table 155, the first surface of the variable table 154 is fixedly connected to the surface of the second magnet 14 away from the first magnet 13, the first end of the spring 153 is fixedly connected to the second surface of the variable table 154, the second end of the spring 153 is fixedly connected to the first surface of the fixed table 155; the inductance coil 152 is close to the second surface of the fixed table 155; the first end of the magnetic core 151 is fixedly connected to the second surface of the variable table 154, and the second end of the magnetic core 151 enters the inductance coil 152 through the through hole on the spring 153 and the fixed table 155.

[0082] Referring to Figure 7 is a third flowchart of the work performed by the controller of the refrigerator, step S112, that is, calculating the distance between the preset detection position and the preset reference position according to the inductance of the inductance device, obtaining the door body distance, includes:

[0083] calculating the depth of the magnetic core into the inductance coil according to the inductance of the inductance coil;

[0084] calculating the length of the spring according to the depth of the magnetic core into the inductance coil;

[0085] According to the length of the spring, the distance between the preset detection position and the preset reference position is calculated to obtain the door body interval.

[0086] Specifically, in the embodiment of the present application, the first magnet 13 and the second magnet 14 are permanent magnets, the first magnet 13 is arranged at the preset detection position on the door body 12, the second magnet 14 is arranged at the preset reference position, and the adjacent surfaces of the first magnet 13 and the second magnet 14 have the same polarity. According to the principle of same polarity repulsion, the adjacent surfaces of the first magnet 13 and the second magnet 14 repel each other. When the door body 12 gradually falls, the distance between the preset detection position and the preset reference position changes, the second magnet 14 as a movable magnet drives the magnetic core 151 to move, thereby changing the depth of the magnetic core 151 inserted into the inductor coil 152, and further changing the inductance L.

[0087] Therefore, in actual application, by detecting the inductance L of the inductance device 15, the distance between the preset detection position and the preset reference position, that is, the door body interval d, can be calculated.

[0088] Further, the step S111, that is, the real-time detection of the inductance of the inductance device, specifically comprises:

[0089] Real-time acquisition of the frequency f of the inductance device;

[0090] According to the parallel resonance frequency formula f=1 / 2π√LC of inductance and capacitance, the inductance L is calculated.

[0091] In the embodiment of the present application, the logical relationship between the first magnet, the second magnet, the inductance device and the door body interval is as follows: the door body interval changes, the spring length changes, the magnetic core insertion depth changes, the inductance changes, and the LC parallel resonance frequency f changes. Therefore, the calculation of the door body interval is a reverse calculation process: first, the chip acquires the frequency f, calculates the inductance L according to the acquired f value and the parallel resonance frequency formula of inductance and capacitance, calculates the insertion depth of the magnetic core according to the inductance L, calculates the length change of the spring according to the insertion depth, and calculates the door body interval change according to the length change of the spring.

[0092] Alternatively, by fitting to obtain the corresponding function relationship f=F(d) of the frequency f as the independent variable and the door body interval d as the dependent variable, the frequency f of the inductance device is real-time acquired, and then the f=F(d) function is brought in, so that the door body interval d is obtained.

[0093] By means of the technical means of the embodiment of the present application, the first magnet is arranged at the detection position of the door body, the second magnet and the inductance device are arranged at the preset reference position of the refrigerator, the depth of the magnetic core inserted into the inductance coil is changed by the repulsion force between the two magnets, and then the inductance of the inductance device is changed, so that the door body distance can be calculated accurately and conveniently, and the falling degree of the door body can be accurately represented.

[0094] It can be understood that the above-mentioned method for calculating the door body distance is only in some embodiments, and in actual application, the door body distance can also be detected by arranging a distance sensor, such as a radar sensor or an infrared sensor, on the refrigerator, which does not affect the beneficial effects obtained by the present application.

[0095] In some embodiments, the controller is further used to perform steps S13 and S14 on the basis of any one of the above-mentioned embodiments:

[0096] S13, determining whether the door body distance mutates;

[0097] S14, when it is determined that the door body distance mutates, determining that the hinge is broken, so as to determine that the refrigerator has a door body falling risk.

[0098] It should be noted that when the door body 12 suddenly falls off, the door body distance d mutates, for example, when the hinge of the door body 12 connected to the cabinet 11 suddenly breaks, the door body 12 falls off, which causes hidden dangers to the safety of the user.

[0099] Therefore, in the embodiment of the present application, the controller detects whether the door body distance d mutates, when it is determined that the door body distance mutates, it is determined that the hinge is broken, and the refrigerator has a door body falling risk. When it is determined that the door body distance does not mutate, it is determined that the hinge is not broken, and the refrigerator does not have a door body falling risk.

[0100] Specifically, step S13, that is, determining whether the door body distance mutates, comprises steps S131 to S133:

[0101] S131, taking a preset time length as a detection period, calculating the change rate of the door body distance corresponding to the starting time and the door body distance corresponding to the ending time in each detection period;

[0102] S132, calculating the ratio of the change rate corresponding to the current detection period and the change rate of the last detection period;

[0103] S133, when the ratio is greater than a preset ratio threshold, it is determined that the door body distance mutates.

[0104] Referring to Figure 8, is the principle diagram of calculating the door body spacing change rate in the embodiment of the application, in general, the door body 12 will gradually drop with the increase of the use time, so the door body spacing d should be stable or slowly reduced, therefore, taking the door body spacing d as the y axis and the time t as the x axis, both can approximately satisfy the relationship y=kx. When the hinge breaks, the door body spacing d will mutate. Therefore, according to the door body spacings d1 and d2 corresponding to the mutation point time t1 and a certain time point t2 in advance, the relationship curve y=k0x is calculated, the slope k0 is obtained, and according to the door body spacings d2 and d3 corresponding to the two time points t2 and t3 before mutation, the relationship curve y=k1x is calculated, the slope k1 is obtained, the change rate of the door body spacing is represented by the slope, and the two slopes are compared, so that whether the door body spacing mutates can be judged. The ratio threshold n is set in advance, when the ratio k0 / k1>n, it is considered that the door body spacing d mutates, the hinge of the door body breaks, and it is considered that the door body falling risk exists at present.

[0105] By adopting the technical means of the embodiment of the application, whether the door body falling risk exists is judged by whether the door body spacing mutates through real-time detection of the spacing between the door body and the preset reference position, so that the user is warned in time when the door body falling risk exists, the user is reminded not to open the door and timely maintenance or after-sales intervention is carried out, and the personal safety of the user is ensured.

[0106] In some embodiments, the embodiment of the application is further implemented on the basis of the above-mentioned embodiments, and the refrigerator further comprises an alarm device 16, as shown in Figure 10 , is the fifth flowchart of the work performed by the controller of the refrigerator in the embodiment of the application, and the controller is further used for executing step S15 after step S12:

[0107] S15, when it is determined that the door body falling risk exists, a first alarm control instruction is sent to the alarm device, so that the alarm device performs a preset first alarm action.

[0108] The controller is further used for executing step S16 after step S14:

[0109] S16, when it is determined that the door body falling risk exists, a second alarm control instruction is sent to the alarm device, so that the alarm device performs a preset second alarm action.

[0110] In the embodiment of the present application, the first alarm action is used to send first alarm information to the user to remind the user that the refrigerator has a door body falling risk, so that the user can timely perform maintenance or after-sales intervention after receiving the first alarm information; the second alarm action is used to send second alarm information to the user to remind the user that the refrigerator has a door body falling risk, so that the user can not open the door body and timely perform maintenance or after-sales intervention after receiving the second alarm information.

[0111] Optionally, the alarm device 16 can be configured in the form of a display screen, and the first alarm action and / or the second alarm action can be performed by displaying preset first alarm information and / or second alarm information on the display screen; the alarm device 16 can also be configured in the form of a voice module, and the first alarm action and / or the second alarm action can be performed by playing preset first alarm information and / or second alarm information through the voice module; the alarm device 16 can also be configured in the form of an LED lamp group, and the first alarm action and / or the second alarm action can be performed by lighting preset color light or a preset light pattern of the LED lamp group to represent the first alarm information and / or the second alarm information; the alarm device 16 can also be configured in the form of a buzzer, and the first alarm action and / or the second alarm action can be performed by emitting a preset frequency or preset duration of buzzing sound through the buzzer to represent the first alarm information and / or the second alarm information.

[0112] Of course, the alarm device 16 can also be configured in other alarm modes, and can also be a combination of two or more of the above alarm modes, without affecting the beneficial effects achieved by the present application.

[0113] Further, the controller is further configured to:

[0114] When it is determined that there is a door body falling risk, send first alarm information to a mobile terminal that is previously bound with the refrigerator;

[0115] When it is determined that there is a door body falling risk, send second alarm information to a mobile terminal that is previously bound with the refrigerator.

[0116] By using the technical means of the embodiment of the present application, when the door body falling risk and / or the door body falling risk occurs, the corresponding alarm information is timely conveyed to the user, so that the user can timely perform maintenance or after-sales intervention, and the personal safety of the user is ensured.

[0117] The embodiment of the present application also provides a refrigerator door body falling risk warning method applied to a refrigerator, and the refrigerator comprises:

[0118] a cabinet body, at least one storage compartment is formed in the cabinet body, and the cabinet body is used for storing articles;

[0119] a door body, which is a swing door, is arranged at an opening of the storage compartment, and the door body is connected to the cabinet through a hinge, and the door body is used to realize opening or closing of the storage compartment;

[0120] The method comprises steps S21 to S22:

[0121] S21, real-time detection of a distance between a preset detection position on the door body and a preset reference position on the refrigerator as a door body distance; wherein the preset reference position is preset and not located on the door body;

[0122] S21, when the door body distance is greater than a preset door body distance threshold, it is determined that the hinge is loose, and it is determined that the refrigerator has a door body falling risk.

[0123] By using the technical means of the embodiments of the present application, the falling degree of the door body is determined by real-time detection of the distance between the door body and the preset reference position, and when the falling degree of the door body is large, it is considered that there is a door body falling risk, so as to timely issue a warning to the user when the door body falling risk occurs, remind the user to perform maintenance or after-sales intervention, and ensure the personal safety of the user.

[0124] In some embodiments, the refrigerator further comprises a first magnet, a second magnet and an inductance device; the first magnet is arranged at the preset detection position, the second magnet and the inductance device are arranged at the preset reference position, the second magnet is arranged adjacent to the first magnet, and the inductance device is located on a side of the second magnet away from the first magnet; when the distance between the preset detection position and the preset reference position changes, the acting force between the first magnet and the second magnet causes the inductance of the inductance device to change accordingly;

[0125] Step S21, that is, the real-time detection of the distance between the door body and the preset reference position obtains the door body distance, comprising:

[0126] Real-time detection of the inductance of the inductance device;

[0127] According to the current inductance of the inductance device, the distance between the preset detection position and the preset reference position is calculated to obtain the door body distance.

[0128] Further, adjacent surfaces of the first magnet and the second magnet are of the same polarity; the inductance device comprises a magnetic core, an inductor coil, a spring, a variable platform and a fixed platform, a first surface of the variable platform is fixedly connected to a surface of the second magnet away from the first magnet, a first end of the spring is fixedly connected to a second surface of the variable platform, a second end of the spring is fixedly connected to a first surface of the fixed platform; the inductor coil is close to a second surface of the fixed platform; a first end of the magnetic core is fixedly connected to the second surface of the variable platform, and a second end of the magnetic core passes through a through hole on the spring and the fixed platform and enters the inductor coil;

[0129] The distance between the preset detection position and the preset reference position is calculated according to the inductance of the inductance device at present, to obtain the door body spacing.

[0130] The depth of the magnetic core into the inductor coil is calculated according to the inductance of the inductor coil at present.

[0131] The length of the spring is calculated according to the depth of the magnetic core into the inductor coil.

[0132] The distance between the preset detection position and the preset reference position is calculated according to the length of the spring, to obtain the door body spacing.

[0133] By means of the technical scheme of the embodiment of the present application, the first magnet is arranged at the detection position of the door body, the second magnet and the inductance device are arranged at the preset reference position of the refrigerator, the repulsive force between the two magnets is used to change the depth of the magnetic core into the inductor coil, and then the inductance of the inductance device is changed, so that the calculation of the door body spacing can be accurately and conveniently realized, and the falling degree of the door body can be accurately represented.

[0134] In some embodiments, the method further comprises steps S23 to S24:

[0135] S23, determining whether the door body spacing is mutated;

[0136] S24, when it is determined that the door body spacing is mutated, it is determined that the hinge is broken, to determine that the refrigerator has a door body falling risk;

[0137] Further, step S23, that is, the determination of whether the door body spacing is mutated, comprises:

[0138] A preset time length is taken as a detection period, and the change rate of the door body spacing corresponding to the starting time and the door body spacing corresponding to the ending time in each detection period is calculated;

[0139] The ratio of the change rate corresponding to the current detection period and the change rate of the last detection period is calculated.

[0140] When the ratio is greater than a preset ratio threshold, it is determined that the door body distance has a mutation.

[0141] By using the technical means of the embodiment of the present application, whether the door body distance has a mutation is determined by real-time detection of the distance between the door body and the preset reference position, so as to timely issue a warning to the user when the door body falling risk occurs, remind the user not to open the door, and timely perform maintenance or after-sales intervention, thereby ensuring the personal safety of the user.

[0142] In some embodiments, the refrigerator further comprises an alarm device, and the method further comprises:

[0143] When it is determined that the door body falling risk exists, a first alarm control instruction is sent to the alarm device, so that the alarm device performs a preset first alarm action;

[0144] When it is determined that the door body falling risk exists, a first alarm control instruction is sent to the alarm device, so that the alarm device performs a preset first alarm action;

[0145] By using the technical means of the embodiment of the present application, when the door body falling risk and / or the door body falling risk occurs, the corresponding alarm information is timely conveyed to the user, so that the user can timely perform maintenance or after-sales intervention, thereby ensuring the personal safety of the user.

[0146] It should be noted that the door body falling risk warning method of the refrigerator provided by the embodiment of the present application is the same as all the process steps performed by the controller of the refrigerator in the above embodiment, and the working principles and beneficial effects of the two are one-to-one correspondence, and thus will not be described again.

[0147] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiments of the method. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM), etc.

[0148] The above is the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also considered within the scope of protection of the present application.

Claims

1. A refrigerator characterized by comprising: The application relates to a refrigerator, which comprises: a cabinet, in which at least one storage compartment is formed for storing articles; a door body, which is a flat door and is arranged at an opening of the storage compartment, and the door body is connected to the cabinet through a hinge, and the door body is used for opening or closing the storage compartment; a controller, which is used for: real-time detection of a distance between a preset detection position on the door body and a preset reference position on the refrigerator, as a door body distance; wherein the preset reference position is preset and is not located on the door body; when the door body distance is greater than a preset door body distance threshold, it is determined that the hinge is loose, so as to determine that the refrigerator has a door body falling risk; the refrigerator further comprises a first magnet, a second magnet and an inductance device; the first magnet is arranged at the preset detection position, the second magnet and the inductance device are arranged at the preset reference position, the second magnet is arranged adjacent to the first magnet, and the inductance device is located on a side of the second magnet away from the first magnet; when the distance between the preset detection position and the preset reference position changes, the acting force between the first magnet and the second magnet causes the inductance of the inductance device to change accordingly; the real-time detection of the distance between the preset detection position on the door body and the preset reference position on the refrigerator, as the door body distance, comprises: real-time detection of the inductance of the inductance device; according to the current inductance of the inductance device, the distance between the preset detection position and the preset reference position is calculated to obtain the door body distance.

2. The refrigerator according to claim 1, wherein, adjacent surfaces of the first magnet and the second magnet are of the same polarity; the inductance device comprises a magnetic core, an inductance coil, a spring, a variable table and a fixed table, a first surface of the variable table is fixedly connected to a surface of the second magnet away from the first magnet, a first end of the spring is fixedly connected to a second surface of the variable table, a second end of the spring is fixedly connected to a first surface of the fixed table; the inductance coil is close to a second surface of the fixed table; a first end of the magnetic core is fixedly connected to the second surface of the variable table, and a second end of the magnetic core passes through a through hole on the spring and the fixed table and enters the inductance coil; the calculation of the distance between the preset detection position and the preset reference position according to the current inductance of the inductance device to obtain the door body distance comprises: calculation of the depth of the magnetic core into the inductance coil according to the current inductance of the inductance coil; calculation of the length of the spring according to the depth of the magnetic core into the inductance coil; calculation of the distance between the preset detection position and the preset reference position according to the length of the spring to obtain the door body distance.

3. The refrigerator according to claim 1, wherein the controller is further used for: determination of whether the door body distance mutates; when it is determined that the door body distance mutates, it is determined that the hinge is broken, so as to determine that the refrigerator has a door body falling risk.

4. The refrigerator according to claim 3, wherein the determination of whether the door body distance mutates comprises: The preset time length is taken as a detection period, and a change rate of a door body distance corresponding to a starting time and a door body distance corresponding to an ending time in each detection period is calculated; A ratio of the change rate corresponding to the current detection period and the change rate of the last detection period is calculated; When the ratio is greater than a preset ratio threshold, it is determined that the door body distance has a mutation.

5. The refrigerator according to claim 1, wherein The refrigerator further comprises an alarm device, and the controller is further configured to: When it is determined that there is a door body falling risk, a first alarm control instruction is sent to the alarm device to enable the alarm device to perform a preset first alarm action.

6. The refrigerator according to claim 3, wherein The refrigerator further comprises an alarm device, and the controller is further configured to: When it is determined that there is a door body falling risk, a first alarm control instruction is sent to the alarm device to enable the alarm device to perform a preset first alarm action.

7. A refrigerator door falling risk warning method, characterized in that: The refrigerator comprises: a cabinet, inside which at least one storage compartment is formed, for storing articles; a door body, which is a flat opening door, is arranged at an opening of the storage compartment, and the door body is connected to the cabinet through a hinge, and the door body is used to open or close the storage compartment; The method comprises: real-time detection of a distance between a preset detection position on the door body and a preset reference position on the refrigerator as a door body distance; wherein the preset reference position is pre-set and not located on the door body; when the door body distance is greater than a preset door body distance threshold, it is determined that the hinge is loose, to determine that the refrigerator has a door body falling risk; The refrigerator further comprises a first magnet, a second magnet and an inductance device; the first magnet is arranged at the preset detection position, the second magnet and the inductance device are arranged at the preset reference position, the second magnet is arranged adjacent to the first magnet, and the inductance device is located on a side of the second magnet away from the first magnet; when the distance between the preset detection position and the preset reference position changes, the acting force between the first magnet and the second magnet causes the inductance of the inductance device to change accordingly; The real-time detection of the distance between the preset detection position on the door body and the preset reference position on the refrigerator as the door body distance comprises: real-time detection of the inductance of the inductance device; According to the inductance of the inductance device, the distance between the preset detection position and the preset reference position is calculated to obtain the door body distance. 8.The refrigerator door drop risk warning method of claim 7, wherein, The method further comprises: determination of whether the door body distance has a mutation; when it is determined that the door body distance has a mutation, it is determined that the hinge is broken, to determine that the refrigerator has a door body falling risk; The determination of whether the door body distance has a mutation comprises: the preset time length is taken as a detection period, and a change rate of a door body distance corresponding to a starting time and a door body distance corresponding to an ending time in each detection period is calculated; A ratio of the change rate corresponding to the current detection period and the change rate of the last detection period is calculated; When the ratio is greater than a preset ratio threshold, it is determined that the door body distance has a mutation.

Images