CN112097433A

CN112097433A - Refrigerator and control method thereof

Info

Publication number: CN112097433A
Application number: CN202011048444.4A
Authority: CN
Inventors: 王洪明; 刘衍富; 刘明坤
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2020-12-18
Anticipated expiration: 2040-09-29
Also published as: CN112097433B

Abstract

The invention provides a refrigerator and a control method thereof, wherein the refrigerator comprises a refrigerator body, a door body and a switch assembly, wherein the door body is pivotally connected to the pivoting side of the refrigerator body; the switch assembly comprises a primary coil group positioned on the box body, the primary coil group comprises a first primary coil and a second primary coil, the first primary coil and the second primary coil are identical in structure, and the distances from the first primary coil and the second primary coil to the pivoting side are different; the secondary coil group is positioned on the door body and comprises a first secondary coil and a second secondary coil, the first secondary coil and the second primary coil have the same structure, and when the door body is in a closed state, the first secondary coil and the second secondary coil respectively correspond to the first primary coil and the second primary coil; a prompt component; and the processor is in communication connection with the primary coil group, the secondary coil group and the prompting component.

Description

Refrigerator and control method thereof

Technical Field

The invention relates to a refrigerator, in particular to a refrigerator capable of instantly reminding a user of the opening and closing state of a door body and a control method thereof.

Background

At present, door switches commonly used in refrigerators are mainly of a mechanical type and a magnetic control type. Mechanical switch simple structure, but need depend on the switching control of the door body, can't realize through logic control, and mechanical switch easily appears the terminal scheduling problem of striking sparks moreover for there is the potential safety hazard in the refrigerator use. (ii) a While the magnetic switch compensates for the problems of terminal sparking of the mechanical switch, it requires auxiliary support of the magnetic field such as a magnet, and the magnetic properties of the magnet decay with increasing time of use.

And mechanical type and magnetic control formula are to the suggestion mode of refrigerator door switch do, and after 1min after the refrigerator door was opened, the buzzer sounds, and both can't realize the instant suggestion of refrigerator door on-off state, appear easily that the refrigerator door does not close, and the condition that the user was not aware.

In view of the above, it is desirable to provide a new refrigerator and a control method thereof to solve the above problems.

Disclosure of Invention

The present invention is directed to solve at least one of the technical problems of the related art, and thus, to provide a refrigerator and a control method thereof.

In order to realize one of the purposes of the invention, the invention adopts the following technical scheme:

a refrigerator comprises a refrigerator body, a door body and a switch assembly, wherein the door body is pivotally connected to the pivoting side of the refrigerator body; the switch assembly includes:

a primary coil set located on the box body, wherein the primary coil set comprises a first primary coil and a second primary coil, the first primary coil and the second primary coil are identical in structure, and the distance from the first primary coil to the pivoting side is different from the distance from the second primary coil to the pivoting side;

the secondary coil group is positioned on the door body and comprises a first secondary coil and a second secondary coil, the first secondary coil and the second primary coil have the same structure, when the door body is in a closed state, the first secondary coil corresponds to the first primary coil, and the second secondary coil corresponds to the second primary coil;

a prompt component;

and the processor is in communication connection with the primary coil group, the secondary coil group and the prompting component.

Further, the first secondary coil is connected in series with the second secondary coil, and a first electromotive force u1 generated by the first secondary coil is opposite to a second electromotive force u2 generated by the second secondary coil.

Further, a second primary coil is located on a side of the first primary coil, which is away from the pivot side, one end of the first primary coil, which faces the second primary coil, is connected in series with one end of the second primary coil, which faces the first primary coil, and one end of the first secondary coil, which faces the second secondary coil, is connected in series with one end of the second secondary coil, which is away from the first secondary coil.

Further, a second primary coil is located on a side of the first primary coil, which is away from the pivot side, one end of the first primary coil, which faces the second secondary coil, is connected in series with one end of the second primary coil, which is away from the first primary coil, and one end of the first secondary coil, which faces the second secondary coil, is connected in series with one end of the second secondary coil, which faces the first secondary coil.

Further, the refrigerator comprises at least two door bodies and one switch assembly corresponding to each door body, a second primary coil is located on one side, away from the pivoting side, of the first primary coil, the first primary coils of all the switch assemblies are connected in series, the second primary coils of all the switch assemblies are connected in series, and the processors of all the switch assemblies are integrally arranged;

one end of the first secondary coil, facing the second secondary coil, is connected in series with one end of the second secondary coil, far away from the first secondary coil, or one end of the first secondary coil, facing the second secondary coil, is connected in series with one end of the second secondary coil, facing the first secondary coil.

Further, the prompting component is connected with the secondary coil group in series to form a loop, the prompting component comprises a selective on-off device in communication connection with the processor, an electric storage device connected with a second connecting port of the selective on-off device, and a prompter connected with a third connecting port of the selective on-off device, and a first connecting port of the selective on-off device is connected with the first secondary coil or the second secondary coil in series.

Further, the refrigerator also comprises an illuminating lamp positioned in the refrigerator body, and the illuminating lamp is in communication connection with the processor.

A control method of a refrigerator includes the steps of:

under the energized state of a first primary coil and a second primary coil which are arranged on a box body and have different distances from the pivoting side of the box body, periodically acquiring a first induced electromotive force u1 generated by a first secondary coil corresponding to the first primary coil and a second induced electromotive force u2 generated by a second secondary coil corresponding to the second primary coil; the first primary coil and the second primary coil are identical in structure, and the first secondary coil and the second secondary coil are identical in structure;

if the first induced electromotive force u1 is the first door-closing threshold and the second induced electromotive force u2 is the second door-closing threshold, the door body is in a closed state;

if the first induced electromotive force u1 and the second induced electromotive force u2 are both 0, the door body is in a fully opened state, and the control prompt assembly sends out a first type of prompt;

if the first induced electromotive force u1 is within the first virtual masking threshold range and/or the second induced electromotive force u2 is within the second virtual masking threshold range, the door body is in a virtual masking state, and the prompting component is controlled to send out a second type of prompt.

Further, a first electromotive force u1 generated by the first secondary coil is opposite to a second electromotive force u2 generated by the second secondary coil; the prompting component and the secondary coil group are connected in series to form a loop, the prompting component comprises a selective on-off device, an electric storage device connected with a second connecting port of the selective on-off device, and a prompter connected with a third connecting port of the selective on-off device, and a first connecting port of the selective on-off device is connected with the first secondary coil or the second secondary coil in series;

the control method of the refrigerator further includes: if the first induced electromotive force u1 and the second induced electromotive force u2 are both 0, the selection on-off device is communicated with the power storage device and the prompter; if the first induced electromotive force u1 or the second induced electromotive force u2 is larger than 0, the selective switch is communicated with the secondary coil group and the electric storage device; and if the first induced electromotive force u1 and the second induced electromotive force u2 are both greater than 0, the selective switch is communicated with the secondary coil group and the prompter.

Further, when the first induced electromotive force u1 and the second induced electromotive force u2 are both greater than 0, if the values of the first induced electromotive force u1 and the second induced electromotive force u2 are different, the prompter sends out a second type of prompt; if the values of the first induced electromotive force u1 and the second induced electromotive force u2 are the same, the selective on-off device is communicated with the secondary coil group and the prompter, and the prompter does not work.

Further, when the first induced electromotive force u1 and the second induced electromotive force u2 are both greater than 0, the difference between the first induced electromotive force u1 and the second induced electromotive force u2 is greater than 0 and does not change in a predetermined time, and the prompter issues a third type of prompt.

The invention has the beneficial effects that: according to the refrigerator, the opening and closing state of the door body can be judged immediately through the primary coil group and the secondary coil group, and the prompt is given through the prompter, so that a user can sense the opening and closing state of the door body in time, corresponding execution measures are taken, and adverse results caused by forgetting to close the door body are prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of a switch assembly of a refrigerator according to a preferred embodiment of the present invention when a door is in a closed state;

FIG. 2 is a schematic view of the switch assembly of FIG. 1 at a door opening angle α;

fig. 3 is an enlarged view of the primary coil assembly and the secondary coil assembly in fig. 2 at a door opening angle α;

fig. 4 is a graph showing changes in a first induced electromotive force u1 generated from a first secondary coil and a second induced electromotive force u2 generated from a second secondary coil during the door closing process of fig. 1;

fig. 5 is a schematic view of the opening and closing assembly of the refrigerator according to another preferred embodiment of the present invention, when one door body is in a closed state and the other door body is in an open angle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, a refrigerator 100 of the present invention includes a refrigerator body 1, a door 2 pivotally connected to a pivotal side of the refrigerator body 1, and a switch assembly 3 corresponding to the door 2.

The switch component 3 comprises a primary coil group 31 positioned on the box body 1, a secondary coil group 32, a prompt component 33 and a processor 34 which are positioned on the door body 2 and matched with the primary coil group 31, wherein the processor 34 is in communication connection with the primary coil group 31, the secondary coil group 32 and the prompt component 33 so as to judge the state of the switch component 3, further judge the switch state of the door body 2 and give corresponding prompts. The processor 34 may be a separate structure, or may be integrated on the control panel of the refrigerator.

The primary coil set 31 includes a first primary coil 311 and a second primary coil 312, the first primary coil 311 and the second primary coil 312 have the same structure, and the distance from the first primary coil 311 to the pivot side is different from the distance from the second primary coil 312 to the pivot side, so that the induced magnetic fields generated by the first primary coil 311 and the second primary coil 312 are the same when the same current is applied.

The secondary coil group 32 includes a first secondary coil 321 and a second secondary coil 322, the first secondary coil 321 and the second primary coil have the same structure, when the door body 2 is in a closed state, the first secondary coil 321 corresponds to the first primary coil 311, and the second secondary coil 322 corresponds to the second primary coil 312.

After current is introduced into the primary coil group 31, when the door body 2 is in a closed state, the distance between the first secondary coil 321 and the first primary coil 311 is the smallest, and the first induced electromotive force u1 generated by the first secondary coil 321 is the largest, which is a first door-closing threshold value; the distance between the second secondary coil 322 and the second primary coil 312 is the smallest, and the second induced electromotive force u2 generated by the second secondary coil 322 is the largest, which is the second door-closing threshold.

In the door opening and closing process of the door body 2, the first secondary coil 321 moves on the induced magnetic field of the first primary coil 311, the distance between the first secondary coil 321 and the first primary coil 311 changes, and the generated first induced electromotive force u1 changes along with the door opening angle; the second secondary coil 322 moves on the induced magnetic field of the second primary coil 312, the distance between the second secondary coil 322 and the second primary coil 312 is changed, and the generated second induced electromotive force u2 is changed according to the door opening angle.

When the door body 2 is in an open state, the distance between the first secondary coil 321 and the first primary coil 311 is too large, and the first induced electromotive force u1 is 0; the distance between the second secondary winding 322 and the second primary winding 312 is too large, and the second induced electromotive force u2 is 0.

The distance from the first primary coil 311 to the pivot side is different from the distance from the second primary coil 312 to the pivot side, so that the distance between the first secondary coil 321 and the first primary coil 311 is different from the distance between the second secondary coil 322 and the second primary coil 312 during the opening process of the door body 2; on the basis, if the induced magnetic fields generated by the first primary coil 311 and the second primary coil 312 are the same, the magnitudes of the first induced electromotive force u1 and the second induced electromotive force u2 are different, and the door opening and closing process and the door opening and closing state can be sequentially determined.

Further, the first secondary coil 321 is connected in series with the second secondary coil 322, and a first electromotive force U1 generated by the first secondary coil 321 is opposite to a second electromotive force U2 generated by the second secondary coil 322, and a state of opening and closing a door can be determined according to a potential difference U of the secondary coil group 32, where U is U1-U2; when the door body 2 is closed, the potential difference U is 0; in the opening and closing process of the door body 2, the potential difference U is larger than 0.

As shown in fig. 3, the larger the distance between the first primary coil 311 and the second primary coil 312 is, the larger the potential difference U is during the process of opening and closing the door; the sensitivity of the switching element 3 is thus related to the distance between the first primary coil 311 and the second primary coil 312, and the larger this distance, the higher the sensitivity. Therefore, the door opening angle of the door body 2 can be judged according to the magnitude of the potential difference U.

In one embodiment, the second primary coil 312 is located on a side of the first primary coil 311 away from the pivot side, an end of the first primary coil 311 facing the second primary coil 312 is connected in series with an end of the second primary coil 312 facing the first primary coil 311, an end of the first secondary coil 321 facing the second secondary coil 322 is connected in series with an end of the second secondary coil 322 away from the first secondary coil 321; therefore, the first electromotive force U1 generated by the first secondary coil 321 is opposite to the second electromotive force U2 generated by the second secondary coil 322, and therefore the potential difference U of the secondary coil group 32 varies with the variation of at least one of the first electromotive force U1 and the second electromotive force U2.

In another embodiment, the second primary coil 312 is located on a side of the first primary coil 311 away from the pivot side, an end of the first primary coil 311 facing the second secondary coil 322 is connected in series with an end of the second primary coil 312 away from the first primary coil 311, an end of the first secondary coil 321 facing the second secondary coil 322 is connected in series with an end of the second secondary coil 322 facing the first secondary coil 321; therefore, the first electromotive force U1 generated by the first secondary coil 321 is opposite to the second electromotive force U2 generated by the second secondary coil 322, and thus the potential difference U varies with a variation in at least one of the first electromotive force U1 and the second electromotive force U2.

Or in other embodiments, as shown in fig. 5, the refrigerator 100 includes at least two door bodies 2, one switch assembly 3 corresponding to each door body 2, a second primary coil 312 is located on a side of the first primary coil 311 away from the pivoting side, the first primary coils 311 of all the switch assemblies 3 are connected in series, the second primary coils 312 of all the switch assemblies 3 are connected in series, and the processors 34 of all the switch assemblies 3 are integrally disposed; the end of the first secondary coil 321 facing the second secondary coil 322 is connected in series with the end of the second secondary coil 322 facing away from the first secondary coil 321, and if the current in the first primary coil 311 is in a different direction from the current in the second primary coil 312, the first electromotive force u1 is in an opposite direction to the second electromotive force u 2; or the end of the first secondary winding 321 facing the second secondary winding 322 is connected in series with the end of the second secondary winding 322 facing the first secondary winding 321, in this case, if the current in the first primary winding 311 is the same as the current in the second primary winding 312, the first electromotive force u1 is opposite to the second electromotive force u 2.

The prompting component 33 may have any structure, and may send a prompting signal to a customer when the door 2 is not closed, where the prompting signal includes, but is not limited to, light, sound, video, and the like.

In a preferred embodiment, the prompting component 33 and the secondary coil set 32 are connected in series to form a loop, that is, two ends of the prompting component 33 are respectively connected to two ends of the secondary coil set 32. The prompting component 33 includes a selection switch 331 communicatively connected to the processor 34, a power storage device 332 connected to the second connection port of the selection switch 331, and a prompting device 333 connected to the third connection port of the selection switch 331, wherein the first connection port of the selection switch 331 is connected in series with the first secondary coil 321 or the second secondary coil 322, and the power storage device 332 is connected in parallel with the prompting device 333 and then connected in series with the secondary coil that is not connected to the first connection port of the selection switch 331. In one embodiment, the power storage device 332 is a super capacitor.

The selection switch 331 switches a communication mode according to the first electromotive force u1 and the second electromotive force u2, and the specific process is as follows: if the first induced electromotive force u1 and the second induced electromotive force u2 are both 0, the selection on-off device 331 communicates the electric storage device 332 with the prompter 333; if the first induced electromotive force u1 or the second induced electromotive force u2 is greater than 0, the selection switch 331 connects the secondary coil group 32 and the electrical storage device 332; if both the first induced electromotive force u1 and the second induced electromotive force u2 are greater than 0, the selection switch 331 connects the secondary coil group 32 and the prompter 333.

Further, the refrigerator 100 further comprises an illuminating lamp 4 positioned in the refrigerator body 1, wherein the illuminating lamp 4 is in communication connection with the processor 34; when the door body 2 is in an open state, the processor 34 starts the illuminating lamp 4 to provide light for the interior of the box body 1.

Based on the structure of the refrigerator 100, the present invention further provides a control method of the refrigerator 100, including the following steps:

under the state that a first primary coil 311 and a second primary coil 312 which are arranged on a box body 1 and have different distances from the pivoting side of the box body 1 are electrified, a first induced electromotive force u1 generated by a first secondary coil 321 corresponding to the first primary coil 311 and a second induced electromotive force u2 generated by a second secondary coil 322 corresponding to the second primary coil 312 are periodically acquired;

if the first induced electromotive force u1 is the first door-closing threshold and the second induced electromotive force u2 is the second door-closing threshold, the door body 2 is in a closed state; if the first induced electromotive force u1 and the second induced electromotive force u2 are both 0, the door body 2 is in a fully opened state, and the control prompt component 33 sends out a first type prompt; if the first induced electromotive force u1 is within the first virtual masking threshold range and/or the second induced electromotive force u2 is within the second virtual masking threshold range, the door body 2 is in a virtual masking state, and the prompt component 33 is controlled to send out a second type of prompt. The first type of prompt is different from the second type of prompt, and a user can determine the state of the door body 2 in a straight pipe manner.

Further, in the embodiment where the first secondary coil 321 is connected in series with the second secondary coil 322, and the first electromotive force u1 generated by the first secondary coil 321 is opposite to the second electromotive force u2 generated by the second secondary coil 322, and the prompting component 33 includes the selection switch 331, the power storage device 332, and the prompting device 333; the control method of the refrigerator 100 further includes: if the first induced electromotive force u1 and the second induced electromotive force u2 are both 0, the selection on-off device 331 communicates the electric storage device 332 with the prompter 333, the electric storage device 332 supplies power to the prompter 333, and the prompter 333 sends out a first type of prompt; if the first induced electromotive force u1 or the second induced electromotive force u2 is greater than 0, the selection switch 331 connects the secondary coil group 32 with the electrical storage device 332, and the secondary coil group 32 charges the electrical storage device 332; if the first induced electromotive force u1 and the second induced electromotive force u2 are both greater than 0, the selection switch 331 communicates the secondary coil group 32 with the prompter 333, the secondary coil group 32 supplies power to the prompter 333, and the prompter 333 issues a second type of prompt or does not work.

Further, when the first induced electromotive force u1 and the second induced electromotive force u2 are both greater than 0, if the values of the first induced electromotive force u1 and the second induced electromotive force u2 are different, the prompter 333 sends out a second type of prompt; if the first induced electromotive force u1 and the second induced electromotive force u2 have the same value, the selection switch 331 connects the secondary coil group 32 and the indicator 333, and the indicator 333 does not operate because the total output electromotive force of the secondary coil group 32 is 0.

Further, when the first induced electromotive force u1 and the second induced electromotive force u2 are both greater than 0, and the difference between the first induced electromotive force u1 and the second induced electromotive force u2 is greater than 0 and does not change within a predetermined time, the prompter 333 issues a third type of prompt.

In a specific embodiment, the indicator 333 is an indicator light, and the indicator light may emit green light as the first type of indication; and emitting orange light as a second type prompt, emitting yellow light as a third type prompt.

The operating principle of the switching assembly 3 according to the invention will be explained in more detail on the basis of the exemplary embodiments shown in fig. 1 and 2:

when the door body 2 is opened, the door opening angle α is large, the distance between the first secondary coil 321 and the first primary coil 311 is too large, and the first induced electromotive force u1 is 0; the distance between the second secondary winding 322 and the second primary winding 312 is too large, and the second induced electromotive force u2 is 0; the selection switch 331 switches on the electric storage device 332 and the indicator light, and at this time, the indicator light emits green light to prompt that the door of the refrigerator 100 is in a normal open state; the compartment illumination lamp 4 of the refrigerator 100 is turned on.

When the door body 2 is gradually closed, the door opening angle α is gradually reduced, when α reaches α 1, the first induced electromotive force u1 generated by the first secondary coil 321 is greater than 0, and the first induced electromotive force u1 is gradually increased along with the reduction of α in the closing process, and the second induced electromotive force u2 is 0; at this time, the rotary switch turns on the secondary coil group 32 and the power storage device 332, and the secondary coil group 32 charges the power storage device 332.

When the door opening angle α continues to decrease to α 2, the second induced electromotive force u2 generated by the second secondary coil 322 is greater than 0; and the second induced electromotive force U2 also gradually increases with the decrease of α, the potential difference U of the secondary coil group 32 is U1-U2, as shown in fig. 4, with the gradual decrease of the door opening angle α, the potential difference U gradually decreases from large to 0, in the process, the selection on-off device 331 conducts the secondary coil group 32 and the prompter 333, the indicator lamp is powered by the potential difference of the secondary coil group 32, the indicator lamp emits orange light, and the brightness of the indicator lamp gradually decreases due to the change of the potential difference. The process of opening the door 2 is opposite to the above case, and is not described in detail herein.

When the door body 2 is closed, the door opening angle α is 0, the first induced electromotive force U1 is greater than 0, the second induced electromotive force U2 is greater than 0, but the potential difference U of the secondary coil group 32 is 0, and at this time, the indicator light is not on.

When the door body 2 is not closed reasonably, the door body 2 can be understood to stay at any position in the closing process, and the indicating lamp emits yellow light different from that in the normal door opening state to remind a user. The door of the refrigerator 100 is not properly closed, which generally occurs when the door of the refrigerator 100 is hidden.

In summary, the refrigerator 100 of the present invention can instantly determine the opening and closing state of the door 2 through the primary coil group 31 and the secondary coil group 32, and give a prompt through the prompt 333, so that the user can timely sense the opening and closing state of the door 2, make corresponding execution measures, and prevent the adverse effect caused by forgetting to close the door 2.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A refrigerator comprises a refrigerator body, a door body and a switch assembly, wherein the door body is pivotally connected to the pivoting side of the refrigerator body; characterized in that the switch assembly comprises:

a prompt component;

2. The refrigerator of claim 1, wherein the first secondary coil is connected in series with the second secondary coil, and a first electromotive force u1 generated by the first secondary coil is opposite in direction to a second electromotive force u2 generated by the second secondary coil.

3. The refrigerator of claim 1, wherein a second primary coil is located on a side of the first primary coil facing away from the pivot side, an end of the first primary coil facing the second secondary coil is connected in series with an end of the second primary coil facing the first primary coil, and an end of the first secondary coil facing the second secondary coil is connected in series with an end of the second secondary coil facing away from the first secondary coil;

or the second primary coil is positioned on one side of the first primary coil, which is far away from the pivoting side, one end of the first primary coil, which faces the second primary coil, is connected in series with one end of the second primary coil, which is far away from the first primary coil, and one end of the first secondary coil, which faces the second secondary coil, is connected in series with one end of the second secondary coil, which faces the first secondary coil.

4. The refrigerator according to claim 1, wherein the refrigerator comprises at least two door bodies, one switch assembly corresponding to each door body, a second primary coil is positioned on one side of the first primary coil, which is far away from the pivoting side, the first primary coils of all the switch assemblies are connected in series, the second primary coils of all the switch assemblies are connected in series, and the processors of all the switch assemblies are integrally arranged;

5. The refrigerator according to any one of claims 2 to 4, wherein the prompting assembly is connected in series with the secondary coil assembly to form a loop, the prompting assembly comprises a selective on-off device in communication connection with the processor, an electric storage device connected with a second connection port of the selective on-off device, and a prompting device connected with a third connection port of the selective on-off device, and a first connection port of the selective on-off device is connected in series with the first secondary coil or the second secondary coil.

6. The refrigerator of claim 1, further comprising a light positioned within the cabinet, the light being communicatively coupled to the processor.

7. A control method of a refrigerator is characterized by comprising the following steps:

8. The control method of a refrigerator according to claim 7, wherein a first electromotive force u1 generated by the first secondary coil is opposite to a second electromotive force u2 generated by the second secondary coil; the prompting component and the secondary coil group are connected in series to form a loop, the prompting component comprises a selective on-off device, an electric storage device connected with a second connecting port of the selective on-off device, and a prompter connected with a third connecting port of the selective on-off device, and a first connecting port of the selective on-off device is connected with the first secondary coil or the second secondary coil in series;

9. The method as claimed in claim 8, wherein when the first and second induced electromotive forces u1 and u2 are both greater than 0, if the values of the first and second induced electromotive forces u1 and u2 are not the same, the prompter issues a second type of prompt; if the values of the first induced electromotive force u1 and the second induced electromotive force u2 are the same, the prompter does not work.

10. The method as claimed in claim 8, wherein when both the first and second induced electromotive forces u1 and u2 are greater than 0, a difference between the first and second induced electromotive forces u1 and u2 is greater than 0 and does not change for a predetermined time, and the prompter issues a third type of prompt.