Refrigerator and detection method of ice-making system thereof

Abstract

The invention provides a refrigerator and a detection method of an ice making system thereof, the refrigerator comprises a detection device and a detection circuit, when an ice blade rotates to at least one preset angle, the ice blade is in contact with the detection device, when the ice blade is in contact with the detection device, the detection circuit continuously sends a first signal to a controller, and when the ice blade is not in contact with the detection device, the detection circuit continuously sends a second signal to the controller. And continuously sending the second signal to the controller. And the controller determines whether the ice-making system is in a normal working state according to the received first signal and / or second signal, so that whether the ice-making system of the refrigerator is abnormal or not is detected, the processing logic is simpler, the design cost is lower, the detection accuracy is higher, and the detection efficiency is improved. Therefore, the execution system of the refrigerator can be detected more effectively.

Description

Technical Field

[0001] This application relates to the technical field of household appliances, and particularly relates to a refrigerator and a detection method for its ice-making system. Background Art

[0002] Some refrigerators are provided with an ice maker, which can utilize the refrigeration capacity provided by the refrigerator refrigeration system to provide additional ice to users. The ice maker is specifically provided with a containing device, an ice knife, and a motor. The motor can be used to drive the ice knife to rotate in the containing device in a preset direction, so as to cut large ice cubes in the containing device into small ice cubes. In some special cases, if the ice knife cannot cut the ice or the torque of the motor drops, the ice knife will be stuck by the ice, resulting in a rapid decrease in the motor speed. Once the motor is in a locked state for a long time, the short-time large current generated inside the motor will burn out the motor, causing serious safety consequences. Therefore, how to more effectively detect whether the motor of the ice maker is abnormal is a technical problem that needs to be solved in this field. Summary of the Invention

[0003] This application provides a refrigerator and a detection method for its ice-making system, which can be used to effectively detect whether the ice-making system of the refrigerator is abnormal.

[0004] In a first aspect of this application, a refrigerator is provided, including: a box body, which is constructed with a refrigerating compartment having an access opening; a door body, which is rotatably connected to the box body to open or close the access opening; an ice-making system for making ice; the ice-making system includes: a containing device for containing ice; an ice knife that can rotate in the containing device; a motor for driving the ice knife to rotate; a controller for controlling the motor to drive the ice knife; the ice-making system further includes: a detection device provided on the side wall of the containing device, when the ice knife rotates to at least one preset angle, the ice knife contacts the detection device; a detection circuit provided outside the containing device, for continuously sending a first signal to the controller when the ice knife contacts the detection device, and continuously sending a second signal to the controller when the ice knife does not contact the detection device; the controller is further configured to determine whether the ice-making system is in a normal working state according to the received first signal and / or the second signal.

[0005] The refrigerator provided in this embodiment can realize the detection of whether the ice-making system of the refrigerator is abnormal, and the detection device adopts a more direct contact detection method with the ice knife, its processing logic is simpler, the design cost is lower, which is more conducive to the design and implementation of the detection device and the detection circuit, and the detection accuracy is higher, and it can more effectively realize the detection of the execution system of the refrigerator.

[0006] In one embodiment, the controller is specifically configured to: when the duration of receiving the first signal is greater than a preset duration, determine that the ice-making system is abnormal; or, when the duration of receiving the second signal is greater than the preset duration, determine that the ice-making system is abnormal; or, when the duration of receiving the first signal is less than or equal to the preset duration and the duration of receiving the second signal is less than or equal to the preset duration, determine that the ice-making system is normal.

[0007] The controller of the refrigerator provided in this embodiment can relatively simply and directly determine whether the ice-making system is abnormal through the received first signal and / or second signal. Its processing logic is simpler, the required computing power is lower, the requirements for the controller are lower, and it can be implemented based on the existing controller, thereby reducing the implementation cost and being more conducive to the popularization and application of the embodiments of this application.

[0008] In one embodiment, the preset duration is less than the locked-rotor time of the motor.

[0009] In this embodiment, the preset duration for the controller to determine whether the ice-making system is abnormal is set according to the locked-rotor time of the motor, which can more effectively design accordingly in combination with the characteristics of different motors in actual applications, making the accuracy of judging whether the motor is abnormal based on the preset duration higher and being more suitable for the actual usage scenarios of different motors.

[0010] In one embodiment, the detection device is a metal elastic sheet. The first end of the metal elastic sheet passes through the side wall of the accommodating device and is connected to the detection circuit, and the second end is suspended inside the accommodating device.

[0011] In this embodiment, the detection device is implemented by a metal elastic sheet, and its structure is relatively simple and the cost is low, thereby reducing the implementation difficulty of the embodiments of this application and being more conducive to the popularization and application of the embodiments of this application.

[0012] In one embodiment, the detection circuit includes: a pull-up resistor, a current-limiting resistor, a filter capacitor, and a pull-down resistor; the first end of the pull-up resistor is connected to the power supply, the second end of the pull-up resistor is connected to the first end of the metal elastic sheet, the first end of the current-limiting resistor is connected to the metal contact, the second end of the current-limiting resistor is connected to the first end of the filter capacitor, the controller, and the first end of the pull-down resistor, and the second ends of the filter capacitor and the pull-down resistor are grounded; when the ice knife contacts the second end of the metal elastic sheet, the first end of the metal elastic sheet is connected to the second end of the pull-down resistor to send the first signal to the controller; when the ice knife does not contact the second end of the metal elastic sheet, the first end of the metal elastic sheet is disconnected from the second end of the pull-down resistor to send the second signal to the controller.

[0013] In this embodiment, the detection circuit is implemented by a structure of resistors and capacitors. Its circuit structure is relatively simple, and at the same time, it can reduce the cost of the detection circuit and the ice-making system where it is located.

[0014] In one embodiment, after the metal shrapnel stops contacting the ice knife, it returns to the state before contacting the ice knife through its own stress recovery; or, the detection device further includes a reset structure for restoring the state before contacting the ice knife when the metal shrapnel stops contacting the ice knife.

[0015] In this embodiment, the metal shrapnel is reset through the reset structure, which improves the stability of the metal shrapnel. When the metal shrapnel is reset by its own stress, it also reduces the complexity of the overall structure, thereby reducing the volume occupied by the detection circuit and the required cost.

[0016] In one embodiment, the detection circuit and the controller are arranged on the same circuit board.

[0017] In this embodiment, the setting of the detection circuit is relatively flexible. When it is arranged on the same circuit board as the controller, it can utilize the existing circuit structure, reduce the adjustment of the ice-making system structure, and is more conducive to the popularization and application of the embodiments of this application.

[0018] In one embodiment, when the controller determines that the ice-making system is abnormal, it also sends a prompt message.

[0019] In this embodiment, when the controller can determine that the execution system is abnormal, it actively sends a prompt message, which can more timely and effectively prompt the abnormality of the ice-making system to relevant maintenance personnel or users, making the abnormality of the ice-making system more intuitive.

[0020] In one embodiment, the controller is further configured to: determine the rotation speed of the ice knife according to the received first signal and second signal; when the rotation speed of the ice knife is different from the preset rotation speed, control the motor to adjust the rotation speed of the ice knife to the preset rotation speed.

[0021] In this embodiment, based on the detection device and the detection circuit, the functions that the controller can achieve are increased, further enriching the application scenarios of the embodiments of this application.

[0022] The second aspect of this application provides a detection method for an ice-making system of a refrigerator, including: acquiring the received first signal and / or second signal, where the first signal is sent by the detection circuit when the ice knife of the ice-making system rotates to at least one preset angle and contacts the detection device, the detection device is arranged on the side wall of the accommodating device, and the second signal is sent by the detection circuit when the ice knife of the ice maker does not contact the detection device; determining whether the ice-making system is abnormal according to the received first signal and / or second signal.

[0023] The refrigerator provided in this embodiment can detect whether the ice-making system of the refrigerator is abnormal. Moreover, the detection device uses a more direct contact detection method with the ice knife, which has a simpler processing logic, lower design cost, is more conducive to the design and implementation of the detection device and the detection circuit, and has a higher detection accuracy, and can more effectively detect the execution system of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 A schematic diagram of a refrigerator in the prior art;

[0026] Figure 2 A schematic structural diagram of an embodiment of the refrigerator provided by the present application;

[0027] Figure 3 A schematic diagram of the position of the detection device provided by the present application;

[0028] Figure 4 A schematic circuit diagram of an embodiment of the detection device and the detection circuit provided by the present application;

[0029] Figure 5 A schematic flowchart of an embodiment of the detection method for the ice-making system provided by the present application;

[0030] Figure 6 A schematic diagram of the first signal and / or the second signal received by the controller provided by the present application;

[0031] Figure 7 A three-dimensional structural diagram of an embodiment of the detection device provided by the present application;

[0032] Figure 8 A contact diagram of the detection device and the detection circuit provided by the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than 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 efforts belong to the scope of protection of the present application.

[0034] The terms "first", "second", "third", "fourth", etc. (if any) in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] With the continuous development of household appliance technology, household appliances such as refrigerators have more and more functions. For example, some refrigerators are provided with an ice-making system, which provides additional ice to users by virtue of the refrigeration capacity provided by the refrigeration system of the refrigerator. At the same time, the ice-making system can also provide a crushed ice function. After making large ice cubes into small ice cubes, it provides ice in different forms to users, making the refrigerator have rich functions and can be applied to more scenarios. In some embodiments, the ice-making system may be specifically referred to as an ice maker, etc.

[0036] For example, Figure 1 is a schematic diagram of a refrigerator in the prior art, as Figure 1 shown, the refrigerator 1 includes:

[0037] A box body and a door body, not shown in Figure 1 , the box body is constructed with a refrigerating compartment having an access opening, and the door body is rotatably connected to the box body to open or close the access opening. The specific implementation manners of the box body and the door body of the refrigerator 1 in the embodiments of the present application are not limited.

[0038] An ice-making system 10, which can be used to make ice.

[0039] Specifically, as Figure 1 shown, the ice-making system 10 includes:

[0040] A receiving device 101, which is used to receive the made ice cubes.

[0041] An ice knife 102, which is used to rotate in a preset ice-crushing direction in the receiving space 101, so as to cut the large ice cubes in the receiving device 101 into small ice cubes, and can also be used to rotate in the opposite direction of the ice-crushing direction in the receiving space 101 to push the made ice cubes out of the receiving space 101, so as to provide ice cubes to users after the production is completed.

[0042] The motor 103 is used to drive the ice blade 102 to rotate in a preset ice crushing direction or drive the ice blade 102 to rotate in the opposite direction of the ice crushing direction.

[0043] The controller 104 is used to control the motor 103, for example, control the motor 103 to drive the ice blade 102 to rotate.

[0044] However, in Figure 1 the existing technology shown, when the ice making system is dealing with larger ice cubes or the torque of the motor is insufficient, etc., if the ice blade 102 is stuck by the ice cube when rotating in the accommodating space 101, the rotation speed of the motor 103 will drop rapidly. Once the motor 103 is in a stuck state for a long time, the short-time large current generated inside the motor 103 will cause the temperature of devices such as the drive chip in the motor 103 to rise, and in severe cases, the motor 103 will be burned out, resulting in serious safety consequences. On the other hand, even if the motor 103 is not burned out, driving the ice blade 102 to rotate under high torque of the motor 103 may also damage the ice blade 102, increasing the maintenance cost of the refrigerator and thus reducing the user experience of the refrigerator.

[0045] Therefore, how to more effectively detect whether the motor of the ice maker set in the refrigerator is abnormal is a technical problem to be solved in this field. Based on this, the present application provides a refrigerator and a method for detecting the motor of its ice maker, which can be used to effectively detect whether the motor of the ice maker is abnormal. The technical solution of the present application will be described in detail below with specific embodiments. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0046] Figure 2 is a schematic structural diagram of an embodiment of the refrigerator provided by the present application. As Figure 2 shown, the refrigerator 1 includes: an ice making system 10, a box body and a door body, wherein the box body and the door body are not shown in Figure 1 here.

[0047] The ice making system 10 includes an accommodating device 101, an ice blade 102, a motor 103 and a controller 104. The settings of the accommodating device 101, the ice blade 102, the motor 103 and the controller 104 are the same as those of the refrigerator 1 shown in Figure 1 and will not be repeated.

[0048] Particularly, as Figure 2 shown, the ice making system 10 of the refrigerator 1 provided by the present application further includes:

[0049] a detection device 105, which is arranged on the side wall of the accommodating device 101. When the ice blade 102 rotates to at least one preset angle in the accommodating device 101, the ice blade 102 contacts the detection device 105.

[0050] The detection circuit 106 is disposed outside the accommodating device 101 and connected to the controller 104. In one embodiment, the detection circuit 106 and the controller 104 are disposed on the same circuit board. The detection circuit 106 is configured to continuously send a first signal to the controller 104 when the skate blade 102 contacts the detection device 105. Also, when the skate blade 102 is not in contact with the detection device 105, a second signal is continuously sent to the controller 104.

[0051] The controller 104 is further configured to receive the first signal and / or the second signal sent by the detection circuit 106, and determine whether the ice making system 10 is in a normal operating state according to the received first signal and / or second signal.

[0052] Figure 3 A schematic diagram of the position of the detection device provided by the present application is shown in Figure 3 In the illustrated embodiment, taking the accommodating device 101 in the shape of a cuboid as an example, the detection device 105 is disposed on a side wall of the accommodating device 101. Among them, the first part L of the detection device 105 extends into the accommodating device 101, and the second part R extends outside the side wall of the accommodating device 101. The second part R of the detection device 105 is connected to the detection circuit 106 outside the side wall of the accommodating device 101.

[0053] In one embodiment, the skate blade 102 specifically includes three blades, denoted as x, y, and z. When the skate blade 102 rotates, when the blade x rotates to the preset angles 1, 2, and 3, the edge portion L-x of the blade x contacts the first part L of the detection device 105; when the blade y rotates to the preset angles 4, 5, and 6, the edge portion L-y of the blade y contacts the first part L of the detection device 105; when the blade z rotates to the preset angles 7, 8, and 9, the edge portion L-z of the blade z contacts the first part L of the detection device 105.

[0054] Figure 4 A schematic circuit structure diagram of an embodiment of the detection device and the detection circuit provided by the present application is shown in Figure 4 In the illustrated example, the detection device 105 may specifically be a metal shrapnel. The first end of the metal shrapnel for connecting the detection circuit 106 is denoted as the c end, the second end for contacting the skate blade 102 is denoted as the a end, and the metal contact in the detection circuit 106 for connecting the c end of the metal shrapnel is denoted as the d end.

[0055] When the ice skate 102 rotates to a preset angle and contacts the a end of the metal shrapnel, under the action of the acting force of the rotation of the ice skate 102, the metal shrapnel rotates around the b end of the central fulcrum, so that the c end of the metal shrapnel contacts the d end of the detection circuit 106, thereby enabling the detection circuit 106 to send a first signal to the controller 104. When the ice skate 102 does not contact the a end of the metal shrapnel, the c end of the metal shrapnel does not contact the d end of the detection circuit 106, thereby enabling the detection circuit 106 to send a second signal to the controller 104.

[0056] In one embodiment, as Figure 4 shown, the detection circuit includes: a pull-up resistor R1, a current-limiting resistor R2, a filter capacitor C1, and a pull-down resistor R3. Among them, the first end of the pull-up resistor R1 is connected to the power supply VCC, the second end of the pull-up resistor R1 is connected to the c end of the metal shrapnel, the first end of the current-limiting resistor R2 is connected to the d end, the second end of the current-limiting resistor R2 is connected to the first end of the filter capacitor C1, the controller 104, and the first end of the pull-down resistor R3, and the second ends of the filter capacitor C1 and the pull-down resistor R3 are grounded.

[0057] When the c end of the metal shrapnel contacts the d end of the detection circuit 106, the power supply VCC provides a first signal in the form of a high level to the controller 104 through the pull-up resistor R1 and the current-limiting resistor R2. When the c end of the metal shrapnel does not contact the d end of the detection circuit 106, the pull-down resistor R3 provides a second signal in the form of a low level to the controller 104.

[0058] Figure 5 is a schematic flowchart of an embodiment of the detection method of the ice-making system provided by this application. As Figure 5 shown, the method can be applied to Figure 4 the refrigerator 1 shown and is executed by the controller 104. Specifically, as Figure 5 shown, the detection method of the ice-making system includes:

[0059] S101: The controller 104 controls the motor 103 to work, so that the motor 103 drives the ice skate 102 to rotate.

[0060] In one embodiment, the controller 104 can control the motor 103 to drive the ice skate 102 to rotate in the Figure 4 shown ice-crushing direction L1 to cut large ice cubes into small ice cubes. Or, the controller 104 can also control the motor 103 to drive the ice skate 102 to rotate in the opposite direction L2 of the Figure 4 shown ice-crushing direction L1 to push the ice cubes in the accommodating device 101 out.

[0061] In one embodiment, the controller 104 can control the motor 103 to drive the ice knife 102 to rotate according to the instructions of the main control of the refrigerator 1 or other application programs. Alternatively, the controller 104 can also receive the instruction information sent by the operator or user, and control the motor 103 to drive the ice knife 102 to rotate according to the instruction information.

[0062] S102: While the controller 104 controls the motor 103 to operate, the controller 104 also receives the first signal and / or the second signal sent by the detection circuit 106.

[0063] Among them, when the controller 104 controls the motor 103 to drive the ice knife 102 to rotate and the ice knife 102 contacts the detection circuit 105, the controller 104 receives the first signal sent by the detection circuit 106. When the ice knife 102 does not contact the detection circuit 105, the control circuit 104 receives the second signal sent by the detection circuit 106.

[0064] S103: The controller 104 determines whether the ice-making system 10 is in a normal operating state according to the received first signal and / or second signal. Specifically, it can determine whether the motor 103 in the ice-making system 10 normally drives the ice knife 102 to rotate, so as to determine whether the ice knife 102 is blocked or the like, so as to avoid subsequent abnormalities of the motor 103.

[0065] Figure 6 Schematic diagram of the first signal and / or second signal received by the controller provided in this application, as Figure 6 shown

[0066] In case S3, when the controller 104 continuously receives the first signal in the form of a high level between t31 - t32, and the duration of the first signal is greater than the preset duration, it is determined that the ice-making system 10 is abnormal, and there may be a situation where the ice knife 102 is blocked or the like.

[0067] In case S2, when the controller 104 continuously receives the second signal in the form of a low level between t21 - t22, and the duration of the second signal is greater than the preset duration, it is determined that the ice-making system 10 is abnormal, and there may be a situation where the ice knife 102 is blocked or the like.

[0068] In case S1, when the controller 104 receives periodic high and low level signals between t11 - t12, and the durations of both the first signal and the second signal are less than or equal to the preset duration, it is determined that the ice-making system 10 is normal, and the ice knife 102 may not be blocked or the like.

[0069] In one embodiment, as Figure 6The time intervals of the shown t31 - t32, t21 - t22, and t11 - t12 are all preset durations, and the preset duration is designed according to the maximum locked - rotor time of the motor 103. For example, if the maximum locked - rotor time of the motor 103 is 30 seconds, and the device may be burned out if the locked - rotor time is greater than 30 seconds, the preset duration can be set to 27 seconds. When the duration that the controller 104 receives the first signal or the second signal is greater than the preset duration, even if the motor 103 is not completely locked - rotor, an abnormal prompt is required. Therefore, the controller 104 can determine that the ice - making system is abnormal at this time.

[0070] In summary, in the detection method of the refrigerator 1 and its ice - making system 10 provided in this embodiment, through the provided detection device 105 and detection circuit 106, when the ice knife 102 rotates to at least one preset angle and contacts the detection device 105, the detection circuit 106 can continuously send the first signal to the controller 104. When the ice knife 102 does not contact the detection device 105, the detection circuit continuously sends the second signal to the controller 104, enabling the controller 104 to determine whether the ice - making system 10 is in a normal working state according to the received first signal and / or second signal, thereby realizing the detection of whether the ice - making system 10 of the refrigerator is abnormal. At the same time, the detection device 105 provided in this application uses a more direct contact - type detection method with the ice knife 102, its processing logic is simpler, the design cost is lower, which is more conducive to the design and implementation of the detection device 105 and the detection circuit 106, and the detection accuracy is higher, and it can more effectively realize the detection of the execution system 10 of the refrigerator.

[0071] In one embodiment, when the controller 104 determines that the ice - making system 10 is abnormal, it can also send a prompt message. For example, the controller 104 can send a prompt message to the main control of the refrigerator 1, so that the main control prompts the abnormality of the ice - making system 10 through a display board, an indicator light, etc. provided on the door body.

[0072] Alternatively, the controller 104 can also control an alarm device such as a speaker to emit a prompt sound, a vibration sound, etc. Or, the controller 104 can also send an abnormal prompt message to the cloud server through a communication device, so that the maintenance personnel or users of the refrigerator 1 can determine the abnormality of the ice - making system of the refrigerator 1 from the cloud server through an electronic device such as a mobile phone.

[0073] In one embodiment, in addition to determining whether the ice making system is abnormal according to the first signal and / or the second signal, the controller 104 can also determine the rotation speed (unit: revolutions per minute) of the ice knife 102 according to the received first signal and / or the second signal when the ice making system 10 is not abnormal. If the current rotation speed of the ice knife 102 does not reach the preset rotation speed required for current ice crushing or is greater than the preset rotation speed, the controller 104 controls the motor 103 to adjust the rotation speed of the ice knife 102, so that the rotation speed of the ice knife 102 is the preset rotation speed required for current ice crushing.

[0074] It can be understood that the controller 104 can detect both the rotation speed of the ice knife 102 rotating in the ice crushing direction and the rotation speed of the ice knife 102 rotating in the opposite direction of the ice crushing direction.

[0075] Figure 7 The three-dimensional structure diagram of an embodiment of the detection device provided by the present application is as follows Figure 7 In the three-dimensional structure diagram shown, the ice knife 102 includes three blades x, y, and z that are arranged at a certain angle difference. When the ice knife 102 rotates normally for one week, it will contact the first part L of the detection device 105 nine times, thereby forming a periodic high and low level signal in the situation S1 as shown Figure 6 shown.

[0076] In the example as shown Figure 7 The detection device 105 further includes a reset structure, and the reset structure can specifically be a spring. After the ice knife 102 contacts the first part L of the metal elastic sheet 105, the metal elastic sheet 105 will deviate from the initial state. The reset structure can be used to reset the detection device 105 back to the initial state after the ice knife 102 stops contacting the detection device 105.

[0077] In another embodiment, the detection device 105 may not be provided with a reset structure, but through the self-stress of the metal elastic sheet 105, the metal elastic sheet 105 returns to the state before contacting the ice knife 102 after stopping contacting the ice knife 102.

[0078] Figure 8 The contact schematic diagram of the detection device and the detection circuit provided by the present application is as follows. The second part R of the detection device 105 extends out of the housing of the accommodating device 101 and is arranged opposite to the metal contact 1060 of the detection circuit 106. The metal contact 1060 can specifically be Figure 8 in the form of a metal sheet. When the ice knife 102 contacts the first part L of the detection device 105, the second part R of the detection device 105 moves and contacts the metal contact 1060. When the ice knife 102 stops contacting the first part L of the detection device 105, the second part R of the detection device 105 returns to the initial state and stops contacting the metal contact 1060.

[0079] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including the above method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disk, or optical disc that can store program codes.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A refrigerator, characterized in that, Comprising: A box body which is configured with a refrigerating compartment having an access opening; A door body which is rotatably connected to the box body to open or close the access opening; An ice-making system for making ice; The ice-making system includes: A receiving device for receiving ice; An ice cutter which can rotate within the receiving device; A motor for driving the ice cutter to rotate; A controller for controlling the motor to drive the ice cutter; The ice-making system further includes: A detection device provided on a side wall of the receiving device, and when the ice cutter rotates to at least one preset angle, the ice cutter contacts the detection device; A detection circuit provided outside the receiving device, for continuously sending a first signal to the controller when the ice cutter contacts the detection device, and continuously sending a second signal to the controller when the ice cutter does not contact the detection device; The controller is further configured to determine whether the ice-making system is in a normal working state according to the received first signal and / or the second signal.

2. The refrigerator according to claim 1, characterized in that, Specifically, the controller is configured to: When the duration of receiving the first signal is greater than a preset duration, determine that the ice-making system is abnormal; Or, when the duration of receiving the second signal is greater than a preset duration, determine that the ice-making system is abnormal; Or, when the duration of receiving the first signal is less than or equal to the preset duration and the duration of receiving the second signal is less than or equal to the preset duration, determine that the ice-making system is normal.

3. The refrigerator according to claim 2, wherein: The preset duration is less than the maximum stall time of the motor.

4. The refrigerator according to any one of claims 1-3, wherein: The detection device is a metal spring piece, a first end of the metal spring piece passes through the side wall of the receiving device and is connected to the detection circuit, and a second end is suspended within the receiving device.

5. The refrigerator according to claim 4, wherein: The detection circuit includes: a pull-up resistor, a current-limiting resistor, a filtering capacitor, and a pull-down resistor; A first end of the pull-up resistor is connected to a power supply, a second end of the pull-up resistor is connected to the first end of the metal spring piece, a first end of the current-limiting resistor is connected to a metal contact, a second end of the current-limiting resistor is connected to a first end of the filtering capacitor, the controller, and a first end of the pull-down resistor, and a second end of the filtering capacitor and a second end of the pull-down resistor are grounded; When the ice cutter contacts the second end of the metal spring piece, the first end of the metal spring piece is connected to the second end of the pull-down resistor to send the first signal to the controller; When the ice cutter does not contact the second end of the metal spring piece, the first end of the metal spring piece is disconnected from the second end of the pull-down resistor to send the second signal to the controller.

6. The refrigerator according to claim 5, wherein: After the metal spring piece stops contacting the ice cutter, it restores its state before contacting the ice cutter through its own stress; Or, the detection device further includes a reset structure for restoring its state before contacting the ice cutter after the metal spring piece stops contacting the ice cutter.

7. The refrigerator according to claim 6, wherein: the detection circuit and the controller are arranged on the same circuit board.

8. The refrigerator according to claim 1, characterized in that, The controller is further configured to: send a prompt message when it is determined that the ice making system is abnormal.

9. The refrigerator according to claim 1, wherein, The controller is further configured to: determine the rotation speed of the ice knife according to the received first signal and the second signal; when the rotation speed of the ice knife is different from a preset rotation speed, control the motor to adjust the rotation speed of the ice knife to the preset rotation speed.

10. A detection method for an ice-making system, characterized in that, including: obtain the received first signal and / or second signal, where the first signal is sent by the detection circuit when the ice knife of the ice making system contacts the detection device when rotating to at least one preset angle, the detection device is arranged on the side wall of the accommodating device, and the second signal is sent by the detection circuit when the ice knife of the ice maker does not contact the detection device; determine whether the ice making system is abnormal according to the received first signal and / or the second signal.

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