Refrigerator and door body falling risk warning method of refrigerator

Abstract

The invention discloses a refrigerator and a door body falling risk warning method of the refrigerator, and the refrigerator comprises a refrigerator body which is internally provided with at least one storage chamber and is used for storing articles; and the door body is a vertical hinged door, is arranged at the opening of the storage chamber, is connected to the refrigerator body through a hinge, and is used for realizing the opening or closing of the storage chamber. The distance between a preset detection position on the door body and a preset reference position on the refrigerator is detected in real time and serves 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 larger than a preset door body distance threshold value, it is judged that the hinge is loosened so as to judge that the refrigerator has the door body falling risk, by means of the door body falling risk monitoring method and device, the door body falling risk can be monitored in real time, a user can be reminded in time when the door body falling risk occurs, and the personal safety of the user is guaranteed.

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 the advancement of science and technology and the improvement of people's living standards, refrigerators have become one of the indispensable household appliances. At present, the door of a refrigerator is usually connected to the refrigerator body through a hinge. As the use time increases, the hinge will gradually become loose, causing the door to fall, and even the hinge shaft may break, causing the door to fall off and cause safety accidents such as hitting people. Therefore, the door falling caused by the loosening or even breaking of the hinge shaft will pose a huge safety hazard to customers. 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 inside for storing items;

[0006] A door body, which is a flat door, is arranged at the opening of the storage compartment, and is connected to the box body by a hinge, and is used to realize the opening or closing of the storage compartment;

[0007] Controller for:

[0008] 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; wherein the preset reference position is pre-set and is not located on the door body;

[0009] When the door body spacing is greater than a preset door body spacing 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 of the above solution, the refrigerator further includes 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, and 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] According to the current inductance of the inductor device, the distance between the preset detection position and the preset reference position is calculated to obtain the door body spacing.

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

[0015] The step of calculating the distance between the preset detection position and the preset reference position according to 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 of the above solution, the controller is also used for:

[0020] Determine whether the door body spacing has a sudden change;

[0021] When it is determined that the door body spacing has a sudden change, 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 of the above solution, the step of judging whether a sudden change occurs in the door body spacing includes:

[0023] Taking a preset time as a detection cycle, calculating 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 cycle;

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

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

[0026] As an improvement of the above solution, the refrigerator further includes an alarm device, and the controller is further used for:

[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 execute a preset first alarm action.

[0028] As an improvement of the above solution, the refrigerator further includes an alarm device, and the controller is further used for:

[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 execute a preset second alarm action.

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

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

[0032] A door body, which is a flat door, is arranged at the opening of the storage compartment, and is connected to the box body by a hinge, and is used to realize the opening or closing of the storage compartment;

[0033] The method comprises:

[0034] 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; wherein the preset reference position is pre-set and is not located on the door body;

[0035] When the door body spacing is greater than a preset door body spacing 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 of the above solution, the refrigerator further includes 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, and 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 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:

[0038] detecting the inductance of the inductor device in real time;

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

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

[0041] Determine whether the door body spacing has a sudden change;

[0042] When it is determined that the door body spacing has a sudden change, 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;

[0043] Wherein, the determining whether the door body spacing has a sudden change includes:

[0044] Taking a preset time as a detection cycle, calculating 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 cycle;

[0045] Calculate the ratio of the change rate corresponding to the current detection cycle to the change rate of the previous detection cycle;

[0046] When the ratio is greater than a preset ratio threshold, it is determined that a sudden change occurs in the door body spacing.

[0047] Compared with the prior art, the refrigerator and the door falling risk alarm method disclosed in the present invention, the refrigerator comprises: a box body and a door body, the door body is arranged at the opening of the storage compartment, and the door body can be movably connected to the box body, 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 the door body spacing; wherein the preset reference position is a position that is pre-set and not located at the door body; when the door body spacing is greater than the preset door body spacing threshold, it is determined that there is a door body falling risk. The technical means of the embodiment of the present invention are adopted to judge the falling degree of the door body by real-time detection of the distance between the door body and the preset reference position. When the door body falls to a large extent, it is considered that there is a door body falling risk, so as to timely issue an early warning to the user when the door body falls, reminding the user to carry out maintenance or after-sales intervention to ensure the personal safety of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a first structural schematic diagram of a refrigerator provided by an embodiment of the present invention;

[0049] Figure 2 is a first flow chart of the work performed by the controller of the refrigerator in an embodiment of the present invention;

[0050] Figure 3 is a schematic structural diagram of a door body in a normal state according to an embodiment of the present invention;

[0051] Figure 4 It is a schematic diagram of the structure of the door body in a falling state according to an embodiment of the present invention;

[0052] Figure 5 is a second flow chart of the work performed by the controller of the refrigerator in an embodiment of the present invention;

[0053] Figure 6 is a schematic diagram of the installation of the first magnet, the second magnet and the inductor device according to an embodiment of the present invention;

[0054] Figure 7 is a third flow chart of the work performed by the controller of the refrigerator in the embodiment of the present invention;

[0055] Figure 8 Schematic diagram of the principle of calculating the door body spacing change rate in an embodiment of the present invention;

[0056] Fig. 9 is a fourth flow chart of the work performed by the controller of the refrigerator in an embodiment of the present invention;

[0057] Fig.10 1 is a fifth flow chart of the work performed by the controller of the refrigerator in the embodiment of the present invention. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] See also Figure 1 , is a first structural schematic diagram of a refrigerator provided by an embodiment of the present invention. The embodiment of the present invention provides a refrigerator 10, including a box body 11, wherein at least one storage chamber, such as a refrigerator chamber and / or a freezer chamber, is formed in the box body for storing items that require freshness or freezing. The refrigerator also includes a refrigeration system for performing a refrigeration operation of the refrigerator.

[0060] It should be noted that the refrigerator performs refrigeration operation through the refrigeration system, provides cold energy to be transmitted to the storage chamber, so that the storage chamber is maintained at a constant low temperature state. Specifically, the refrigeration system of the refrigerator described in the embodiment of the present invention is composed of a compressor, a condenser, a drying filter, a capillary tube, and an evaporator, and the working structure of the refrigeration system includes a compression process, a condensation process, a throttling process, and an evaporation process.

[0061] The compression process is as follows: plug in the power cord of the refrigerator, and when the box needs to be cooled, the compressor starts to work, and the low-temperature, low-pressure refrigerant is sucked into the compressor, compressed into high-temperature, high-pressure superheated gas in the compressor cylinder, and then discharged into the condenser; the condensation process is as follows: the high-temperature, high-pressure refrigerant gas dissipates heat through the condenser, the temperature continues to drop, and is gradually cooled to a saturated vapor at room temperature and high pressure, and further cooled to a saturated liquid, and the temperature no longer drops. The temperature at this time is called the condensation temperature. The pressure of the refrigerant remains almost unchanged during the entire condensation process; the throttling process is as follows: the condensed refrigerant saturated liquid flows into the capillary after the moisture and impurities are filtered out by the drying filter, and the refrigerant is throttled and depressurized through it, and the refrigerant becomes a wet vapor at room temperature and low pressure; the evaporation process is as follows: it then begins to absorb heat and vaporize in the evaporator, which not only reduces the temperature of the evaporator and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator returns to the compressor again, repeating the above process, transferring the heat in the refrigerator to the air outside the box, and achieving the purpose of refrigeration.

[0062] The refrigerator 10 further includes a door body 12, which is disposed at the opening of the storage compartment and is movably connected to the cabinet 11. The door body 12 is used to open or close the storage compartment.

[0063] In the embodiment of the present invention, the door body 12 is a swing door, and the door body 12 is connected to the box body 11 by means of a hinge connection.

[0064] It should be noted that, since the door body 12 is movably connected to the box body 11, as the refrigerator is used for a longer time, the door body 12 will gradually fall. Taking the hinge connection of the door body 12 to the box body 11 as an example, when the hinge connection is loose, the door body 12 will gradually fall, posing a hidden danger to the safety of the user.

[0065] The refrigerator also includes a controller, see Figure 2 , is a first flow chart of the work performed by the controller of the refrigerator in an embodiment of the present invention, wherein the controller is used to perform steps S11 to S12:

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

[0067] S12. When the door body spacing is greater than a preset door body spacing 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.

[0068] In an embodiment of the present invention, a position is selected in advance on the door body 12 as a detection position, and a fixed position is obtained on the refrigerator as a preset reference position. The component where the preset reference position is located is preferably a structural component on the refrigerator that will not change position. For example, the preset reference position is set on the body 11 of the refrigerator, on the crossbeam of the refrigerator, or on the door of a drawer-type storage compartment of the refrigerator.

[0069] It can be understood that when the hinge is loose, the door body 12 will fall down, 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 spacing d. A door body spacing threshold ds is preset to characterize the degree of falling of the door body 12. When it is detected that the door body spacing satisfies d>ds, it indicates that the hinge is loose and the door body 12 falls to a large extent, and it is determined that there is a risk of the door body falling in the current refrigerator. When the door body spacing satisfies d≤ds, it indicates that the hinge is loose or the looseness is not obvious, and the door body 12 falls to a small extent or does not fall, and it is determined that there is no risk of the door body falling in the current refrigerator.

[0071] By adopting the technical means of the embodiments of the present invention, the degree of falling of the door body is judged by real-time detection of the distance between the door body and the preset reference position. When the degree of falling of the door body is large, it is considered that there is a risk of door falling, so that when the risk of door falling occurs, an early warning is promptly issued to the user, reminding the user to carry out maintenance or after-sales intervention to ensure the user's personal safety.

[0072] In some embodiments, the embodiments of the present invention are further implemented on the basis of the above embodiments, and the embodiments of the present invention further optimize the method of detecting the door body spacing. In the embodiment of the present invention, the refrigerator 10 also includes a first magnet 13, a second magnet 14 and an inductor 15. Among them, the first magnet 13 is arranged at the preset detection position on the door body 12, the second magnet 14 and the inductor 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 inductor 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 force between the first magnet 13 and the second magnet 14 causes the inductance of the inductor to change accordingly.

[0073] See also Figure 3 and Figure 4 , Figure 3 is a schematic diagram of the structure of the door body in a normal state according to an embodiment of the present invention, Figure 4 It is a structural schematic diagram of the door body in the falling state in an embodiment of the present invention, taking the refrigerator including a refrigerating chamber and a freezing chamber, the door body of the refrigerating chamber is connected to the box body 11 by a hinge, and the door body of the freezing chamber is a drawer-type as an example, the drawer-type door body has no hinges and basically will not fall, and the preset reference position is set on the drawer-type door body of the freezer chamber. For the refrigerating chamber door body, when the door body falls, the distance between the preset detection position and the preset reference position changes, and the force between the first magnet 13 and the second magnet 14 changes, thereby causing the inductance of the inductive device to change accordingly.

[0074] Then, see Figure 5 , is a second flow chart of the work performed by the controller of the refrigerator in an embodiment of the present invention, step S11, that is, 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 spacing, includes steps S111 to S112:

[0075] S111, detecting the inductance of the inductor device in real time;

[0076] S112. Calculate the distance between the preset detection position and the preset reference position according to the current inductance of the inductor device to obtain the door body spacing.

[0077] In the embodiment of the present invention, the controller detects the inductance L of the inductor 15 in real time, and further derives and calculates the distance between the preset detection position and the preset reference position based on the inductance L, thereby obtaining the door body spacing d.

[0078] In an optional implementation, the inductance of the inductor 15 when the preset detection position and the preset reference position are at different distances is obtained in advance through experiments, tests, etc., thereby forming a correspondence table between inductance and distance, and the correspondence table is stored for easy call in subsequent applications.

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

[0080] In another optional implementation, a functional relationship between the inductance L of the inductor 15 and the distance between the preset detection position and the preset reference position is pre-fitted. When the controller detects the current inductance L of the inductor 15, the distance between the preset detection position and the preset reference position is substituted into the functional relationship to calculate the distance between the preset detection position and the preset reference position, and the door body spacing d can be determined.

[0081] In some embodiments, see Figure 6 , is a schematic diagram of the installation of the first magnet, the second magnet and the inductor device according to an embodiment of the present invention, wherein the adjacent surfaces of the first magnet 13 and the second magnet 14 have the same polarity. The inductor device 15 comprises a magnetic core 151, an inductor coil 152, a spring 153, a variable platform 154 and a fixed platform 155, wherein the first surface of the variable platform 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 platform 154, and the second end of the spring 153 is fixedly connected to the first surface of the fixed platform 155; the inductor coil 152 is close to the second surface of the fixed platform 155; the first end of the magnetic core 151 is fixedly connected to the second surface of the variable platform 154, and the second end of the magnetic core 151 passes through the through holes on the spring 153 and the fixed platform 155 and enters the inductor coil 152.

[0082] See Figure 7 , is a third flow chart of the work performed by the controller of the refrigerator in an embodiment of the present invention, step S112, that is, calculating the distance between the preset detection position and the preset reference position according to the current inductance of the inductor device to obtain the door body spacing, includes:

[0083] Calculating the depth of the magnetic core entering the inductor coil according to the current inductance of the inductor coil;

[0084] Calculating the length of the spring according to the depth of the magnetic core entering the inductor coil;

[0085] 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.

[0086] Specifically, in the embodiment of the present invention, the first magnet 13 and the second magnet 14 are permanent magnets, the first magnet 13 is set at the preset detection position on the door body 12, the second magnet 14 is set at the preset reference position, and the adjacent surfaces of the first magnet 13 and the second magnet 14 are of the same polarity. According to the principle of like charges repel each other, the adjacent surfaces of the first magnet 13 and the second magnet 14 repel each other magnetically. By utilizing the repulsive force of the first magnet 13 and the second magnet 14, when the door body 12 gradually falls, the distance between the preset detection position and the preset reference position changes, and the second magnet 14 acts as a movable magnet to drive the magnetic core 151 to move, thereby changing the depth of the magnetic core 151 inserted into the inductor 152, thereby changing the inductance L.

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

[0088] Furthermore, step S111, namely, the real-time detection of the inductance of the inductor device, is specifically as follows:

[0089] Collecting the frequency f of the inductor device in real time;

[0090] The inductance L is calculated based on the parallel resonant frequency formula of inductance and capacitance f=1 / 2π√LC.

[0091] In the embodiment of the present invention, the logical relationship between the first magnet, the second magnet, the inductor and the door body spacing is as follows: the door body spacing changes, which drives the spring length to change, which drives the magnetic core insertion depth to change, resulting in a change in inductance, which causes a change in the LC parallel resonant frequency f. Therefore, calculating the door body spacing is a reverse calculation process: first, the chip collects the frequency f, and calculates the inductance L based on the collected f value and the parallel resonant frequency formula of the inductor and capacitor, calculates the insertion depth of the magnetic core based on the inductance L, calculates the length change of the spring based on the insertion depth, and calculates the door body spacing change based on the length change of the spring.

[0092] Optionally, the corresponding functional relationship f=F(d) with frequency f as the main variable and door body distance d as the dependent variable is obtained by fitting, the frequency f of the inductor device is collected in real time, and then the door body distance d is substituted into the function f=F(d), so as to obtain the door body distance d.

[0093] By adopting the technical means of the embodiment of the present invention, a first magnet is set at the detection position of the door body, and a second magnet and an inductance device are set at a preset reference position of the refrigerator. The repulsive force between the two magnets is used to change the depth of the magnetic core inserted into the inductance coil, thereby changing the inductance of the inductance device. The calculation of the door body spacing can be realized accurately and conveniently, thereby accurately characterizing the degree of door falling.

[0094] It can be understood that the above-mentioned method of calculating the door distance is only in some embodiments. In actual applications, the door distance can also be detected by setting a distance sensor on the refrigerator, such as a radar sensor or an infrared sensor, etc., which does not affect the beneficial effects achieved by the present invention.

[0095] In some embodiments, the embodiment of the present invention is further implemented on the basis of any of the above embodiments, and the controller is further used to perform steps S13 and S14:

[0096] S13, determining whether a sudden change occurs in the distance between the door bodies;

[0097] S14. When it is determined that the door body spacing has a sudden change, 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.

[0098] It should be noted that when the door body 12 suddenly falls off, the door body spacing d will change suddenly. Taking the hinge connection of the door body 12 to the box body 11 as an example, when the hinge suddenly breaks, the door body 12 falls off, posing a hidden danger to the user's safety.

[0099] Therefore, in the embodiment of the present invention, the controller detects whether the door spacing d has a sudden change. When it is determined that the door spacing has a sudden change, it is determined that the hinge is broken and there is a risk of the door falling off the refrigerator. When it is determined that the door spacing has not a sudden change, it is determined that the hinge is not broken and there is no risk of the door falling off the refrigerator.

[0100] Specifically, step S13, i.e., determining whether the door body spacing has a sudden change, includes steps S131 to S133:

[0101] S131, taking a preset time length as a detection cycle, calculating the change rate of the door body spacing corresponding to the start time and the door body spacing corresponding to the end time in each detection cycle;

[0102] S132, calculating the ratio of the change rate corresponding to the current detection cycle to the change rate of the previous detection cycle;

[0103] S133: When the ratio is greater than a preset ratio threshold, it is determined that a sudden change occurs in the door body spacing.

[0104] See also Figure 8, is a schematic diagram of the principle of calculating the rate of change of the door body spacing in an embodiment of the present invention. Under normal circumstances, the door body 12 will gradually fall with the increase of the use time, so the door body spacing d should be stable or slowly decrease. Therefore, with the door body spacing d as the y-axis and the time t as the x-axis, the two can approximately satisfy the relationship y=kx. When the hinge is broken, the door body spacing d will undergo a sudden change. Therefore, according to the door body spacing d1 and d2 corresponding to the mutation point time t1 and a certain time point t2 before, the relationship curve y=k0x is calculated to obtain the slope k0, and according to the door body spacing d2 and d3 corresponding to the two time points t2 and t3 before the mutation, the relationship curve y=k1x is calculated to obtain the slope k1. The rate of change of the door body spacing is characterized by the slope. By comparing the two slopes, it can be determined whether the door body spacing has a sudden change. A ratio threshold n is set in advance. When the ratio k0 / k1>n, it is considered that the door body spacing d has a sudden change, and it is identified that the hinge of the door body has broken, that is, there is a risk of the door body falling off.

[0105] By adopting the technical means of the embodiments of the present invention, the distance between the door body and the preset reference position is detected in real time, and the existence of a risk of the door body falling off is judged by whether there is a sudden change in the distance between the door bodies, so that an early warning can be issued to the user in time when there is a risk of the door body falling off, reminding the user not to open the door and to carry out maintenance or after-sales intervention in time to ensure the user's personal safety.

[0106] In some embodiments, the present invention is further implemented on the basis of the above embodiments, and the refrigerator further includes an alarm device 16, see Fig.10 , is a fifth flow chart of the work performed by the controller of the refrigerator in the embodiment of the present invention, wherein the controller is further configured to perform step S15 after step S12:

[0107] S15. 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 execute a preset first alarm action.

[0108] The controller is further configured to, after step S14, execute step S16:

[0109] S16. When it is determined that there is a risk of the door falling off, a second alarm control instruction is sent to the alarm device so that the alarm device executes a preset second alarm action.

[0110] In an embodiment of the present invention, the first alarm action is used to send a first alarm message to the user to remind the user that there is a risk of the door of the refrigerator falling off, so that the user can promptly perform repairs or after-sales intervention after receiving the first alarm message; the second alarm action is used to send a second alarm message to the user to remind the user that there is a risk of the door of the refrigerator falling off, so that the user can avoid opening the door after receiving the second alarm message and promptly perform repairs or after-sales intervention.

[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 are executed by displaying the preset first alarm information and / or the second alarm information on the display screen; the alarm device 16 can also be configured in the form of a voice module, and the preset first alarm information and / or the second alarm information are broadcasted through the voice module to execute the first alarm action and / or the second alarm action; the alarm device 16 can also be configured in the form of an LED light group, and the first alarm information and / or the second alarm information are represented by lighting up a preset color of light or a preset light pattern in the LED light group to execute the first alarm action and / or the second alarm action; the alarm device 16 can also be configured in the form of a buzzer, and the first alarm information and / or the second alarm information are represented by emitting a buzzing sound of a preset frequency or a preset duration in the buzzer to execute the first alarm action and / or the second alarm action.

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

[0113] Furthermore, the controller is also used for:

[0114] When it is determined that there is a risk of the door falling, a first alarm message is sent to a mobile terminal that is pre-bound with the refrigerator;

[0115] When it is determined that there is a risk of the door falling off, a second alarm message is sent to a mobile terminal that is pre-bound to the refrigerator.

[0116] By adopting the technical means of the embodiments of the present invention, when there is a risk of the door falling and / or the door falling off, the corresponding alarm information is promptly conveyed to the user so that the user can carry out repairs or after-sales intervention in time to ensure the user's personal safety.

[0117] The embodiment of the present invention further provides a refrigerator door falling risk warning method, which is applied to a refrigerator, and the refrigerator comprises:

[0118] The box body has at least one storage compartment formed inside for storing items;

[0119] A door body, which is a flat door, is arranged at the opening of the storage compartment, and is connected to the box body by a hinge, and is used to realize the opening or closing of the storage compartment;

[0120] The method comprises steps S21 to S22:

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

[0122] S21. When the door body spacing is greater than a preset door body spacing 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.

[0123] By adopting the technical means of the embodiments of the present invention, the degree of falling of the door body is judged by real-time detection of the distance between the door body and the preset reference position. When the degree of falling of the door body is large, it is considered that there is a risk of door falling, so that when the risk of door falling occurs, an early warning is promptly issued to the user, reminding the user to carry out maintenance or after-sales intervention to ensure the user's personal safety.

[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, the inductance device is located on a side of the second magnet away from the first magnet, and 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;

[0125] Step S21, namely, detecting the distance between the door body and a preset reference position in real time to obtain the door body spacing, includes:

[0126] detecting the inductance of the inductor device in real time;

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

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

[0129] The step of calculating the distance between the preset detection position and the preset reference position according to the current inductance of the inductor device to obtain the door body spacing includes:

[0130] Calculating the depth of the magnetic core entering the inductor coil according to the current inductance of the inductor coil;

[0131] Calculating the length of the spring according to the depth of the magnetic core entering 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 adopting the technical means of the embodiment of the present invention, a first magnet is set at the detection position of the door body, and a second magnet and an inductance device are set at a preset reference position of the refrigerator. The repulsive force between the two magnets is used to change the depth of the magnetic core inserted into the inductance coil, thereby changing the inductance of the inductance device. The calculation of the door body spacing can be realized accurately and conveniently, thereby accurately characterizing the degree of door falling.

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

[0135] S23, determining whether a sudden change occurs in the distance between the door bodies;

[0136] S24, when it is determined that the door body spacing has a sudden change, determining that the hinge is broken, so as to determine that there is a risk of the door body of the refrigerator falling off;

[0137] Furthermore, step S23, i.e., determining whether the door body spacing has a sudden change, includes:

[0138] Taking a preset time as a detection cycle, calculating 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 cycle;

[0139] Calculate the ratio of the change rate corresponding to the current detection cycle to the change rate of the previous detection cycle;

[0140] When the ratio is greater than a preset ratio threshold, it is determined that a sudden change occurs in the door body spacing.

[0141] By adopting the technical means of the embodiments of the present invention, the distance between the door body and the preset reference position is detected in real time, and the existence of a risk of the door body falling off is judged by whether there is a sudden change in the distance between the door bodies, so that an early warning can be issued to the user in time when there is a risk of the door body falling off, reminding the user not to open the door and to carry out maintenance or after-sales intervention in time to ensure the user's personal safety.

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

[0143] 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 so that the alarm device executes a preset first alarm action;

[0144] 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 execute a preset second alarm action.

[0145] By adopting the technical means of the embodiments of the present invention, when there is a risk of the door falling and / or the door falling off, the corresponding alarm information is promptly conveyed to the user so that the user can carry out repairs or after-sales intervention in time to ensure the user's personal safety.

[0146] It should be noted that the refrigerator door falling risk alarm method provided in an embodiment of the present invention is the same as all the process steps executed by a refrigerator controller in the above embodiment, and the working principles and beneficial effects of the two correspond one to one, so they will not be repeated here.

[0147] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0148] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that: include: The box body has at least one storage compartment formed inside for storing items; A door body, which is a flat door, is arranged at the opening of the storage compartment, and is connected to the box body through a hinge, and is used to realize the opening or closing of the storage compartment; Controller for: 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; wherein the preset reference position is pre-set and is not located on the door body; When the door body spacing is greater than a preset door body spacing 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.

2. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises a first magnet, a second magnet and an inductor; the first magnet is arranged at the preset detection position, the second magnet and the inductor are arranged at the preset reference position, the second magnet is arranged adjacent to the first magnet, the inductor is located on a side of the second magnet away from the first magnet, and 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 inductor to change accordingly; 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: detecting the inductance of the inductor device in real time; According to the current inductance of the inductor device, the distance between the preset detection position and the preset reference position is calculated to obtain the door body spacing.

3. The refrigerator according to claim 2, characterized in that: The adjacent surfaces of the first magnet and the second magnet have the same polarity; the inductor device comprises 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 the 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, and 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, and the second end of the magnetic core passes through the spring and the through holes on the fixed platform and enters the inductor coil; The step of calculating the distance between the preset detection position and the preset reference position according to the current inductance of the inductor device to obtain the door body spacing includes: Calculating the depth of the magnetic core entering the inductor coil according to the current inductance of the inductor coil; Calculating the length of the spring according to the depth of the magnetic core entering the inductor coil; 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.

4. The refrigerator according to claim 1, characterized in that: The controller is also used for: Determine whether the door body spacing has a sudden change; When it is determined that the door body spacing has a sudden change, 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.

5. The refrigerator according to claim 4, characterized in that: The determining whether the door body spacing has a sudden change includes: Taking a preset time as a detection cycle, calculating 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 cycle; Calculate the ratio of the change rate corresponding to the current detection cycle to the change rate of the previous detection cycle; When the ratio is greater than a preset ratio threshold, it is determined that a sudden change occurs in the door body spacing.

6. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises an alarm device, and the controller is further used for: 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 execute a preset first alarm action.

7. The refrigerator according to claim 4, characterized in that The refrigerator further comprises an alarm device, and the controller is further used for: 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 execute a preset second alarm action.

8. A refrigerator door falling risk warning method, characterized in that: The refrigerator comprises: The box body has at least one storage compartment formed inside for storing items; A door body, which is a flat door, is arranged at the opening of the storage compartment, and is connected to the box body through a hinge, and is used to realize the opening or closing of the storage compartment; The method comprises: 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; wherein the preset reference position is pre-set and is not located on the door body; When the door body spacing is greater than a preset door body spacing 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.

9. The refrigerator door falling risk warning method according to claim 8, characterized in that: The refrigerator further comprises a first magnet, a second magnet and an inductor; the first magnet is arranged at the preset detection position, the second magnet and the inductor are arranged at the preset reference position, the second magnet is arranged adjacent to the first magnet, the inductor is located on a side of the second magnet away from the first magnet, and 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 inductor to change accordingly; 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: detecting the inductance of the inductor device in real time; According to the current inductance of the inductor device, the distance between the preset detection position and the preset reference position is calculated to obtain the door body spacing.

10. The refrigerator according to claim 8, characterized in that The method further comprises: Determine whether the door body spacing has a sudden change; When it is determined that the door body spacing has a sudden change, 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; Wherein, the determining whether the door body spacing has a sudden change includes: Taking a preset time as a detection cycle, calculating 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 cycle; Calculate the ratio of the change rate corresponding to the current detection cycle to the change rate of the previous detection cycle; When the ratio is greater than a preset ratio threshold, it is determined that a sudden change occurs in the door body spacing.

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