Refrigerator and control method thereof

Abstract

According to the refrigerator and the control method thereof, a temperature sensor is arranged in a refrigerator body to detect the surface temperature of a compressor, the fault type can be recognized under the condition that it is recognized that a condensate fan breaks down, and operation of the compressor and the condensate fan is correspondingly controlled according to the fault type; the refrigeration requirement of the box body is met to the maximum extent, product reliability is improved, and user experience is improved.

Description

Technical Field

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

[0002] In existing built-in refrigerators, the heat dissipation of compressors and condensers is taken very seriously. If the heat dissipation problem is not solved, the temperature of the compressor compartment will remain high, which will affect the life of the compressor at the least and pose a safety risk at the worst. The condensing fan is crucial for the heat dissipation of the compressor compartment. For mainstream built-in refrigerators, when it comes to condensing fan failure, either the software sends a signal to run at the maximum speed when a failure occurs, or the compressor is stopped in one fell swoop, so it is impossible to tell whether the fan is rotating when the fan fails. Neither of these two situations can effectively solve the impact of condensing fan failure on customer experience and product reputation. In addition, it takes a long time from the occurrence of a failure to the completion of after-sales service for the cabinet, which seriously affects the consumer experience. In addition, when the condensing fan fails and cannot rotate, the existing technology does not consider how to balance the control of refrigeration and heat dissipation. Summary of the invention

[0003] The purpose of the embodiment of the present invention is to provide a refrigerator and a control method thereof. By arranging a temperature sensor in the cabinet to detect the surface temperature of the compressor, it is possible to identify the fault type when a condensing fan fault is identified, and control the operation of the compressor and the condensing fan accordingly according to the fault type, thereby meeting the refrigeration needs of the cabinet to the greatest extent, improving product reliability, and enhancing user experience.

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

[0005] A box body, in which at least one storage chamber and a compressor compartment are formed, the storage chamber includes at least a refrigerating chamber and a freezing chamber, the compressor compartment includes a compressor and a condensing fan, the compressor is used to provide refrigeration cycle power, and the condensing fan is used to dissipate heat from the compressor;

[0006] A door, used for opening and closing the storage chamber;

[0007] A compressor temperature sensor, provided on the compressor, for detecting the compressor temperature;

[0008] An ambient temperature sensor is disposed outside the refrigerator and is used to detect the ambient temperature outside the refrigerator;

[0009] The controller is configured as:

[0010] When the refrigerator is running, obtaining the compressor temperature detected by the compressor temperature sensor;

[0011] When the compressor temperature is greater than or equal to a preset temperature threshold and the duration reaches a preset first duration threshold, it is determined that the fault type of the condensing fan is a shutdown fault; wherein the fault types of the condensing fan include a shutdown fault and a feedback line fault;

[0012] Acquire the ambient temperature value detected by the ambient temperature sensor;

[0013] When the ambient temperature value is less than a preset ambient temperature threshold, the compressor is controlled to run at an original speed.

[0014] As an improvement of the above solution, the controller is further configured as follows:

[0015] When the compressor temperature is lower than the temperature threshold, or the duration of the compressor temperature being higher than or equal to the temperature threshold does not reach the first duration threshold, it is determined that the fault type of the condensing fan is a feedback line fault;

[0016] The compressor is controlled to run at the original speed, and the condensing fan is controlled to run at a preset maximum speed gear.

[0017] As an improvement of the above solution, the controller is further configured as follows:

[0018] When the ambient temperature value is greater than or equal to a preset ambient temperature threshold, reducing the speed of the compressor to a first low speed;

[0019] After lowering the speed of the compressor, if the compressor temperature is greater than or equal to the temperature threshold, and the duration for which the compressor temperature is greater than or equal to the temperature threshold reaches the first duration threshold, the speed of the compressor is reduced from the first low speed to the second low speed; if the compressor temperature is less than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, the compressor is controlled to operate at the first low speed.

[0020] As an improvement of the above solution, the controller is further configured as follows:

[0021] When the condensing fan is not faulty, obtaining the compressor temperature detected by the compressor temperature sensor;

[0022] When the compressor temperature is greater than or equal to the temperature threshold and the duration reaches the first duration threshold, the rotation speed of the compressor is reduced and the rotation speed of the condensing fan is increased.

[0023] As an improvement of the above solution, the controller is further configured as follows:

[0024] When the compressor is at the lowest speed gear, the condensing fan is at the highest speed gear and the duration reaches a preset second duration threshold, it is determined that the compressor is faulty.

[0025] As an improvement of the above solution, after acquiring the compressor temperature detected by the compressor temperature sensor, the controller is further configured to:

[0026] When the compressor temperature is lower than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, the compressor is controlled to operate at the current speed.

[0027] To achieve the above object, an embodiment of the present invention further provides a refrigerator control method, comprising:

[0028] When the refrigerator is running, the compressor temperature of the compressor is obtained;

[0029] When the compressor temperature is greater than or equal to a preset temperature threshold and the duration reaches a preset first duration threshold, it is determined that the fault type of the condensing fan is a shutdown fault; wherein the fault types of the condensing fan include a shutdown fault and a feedback line fault;

[0030] Get the ambient temperature outside the refrigerator;

[0031] When the ambient temperature value is less than a preset ambient temperature threshold, the compressor is controlled to run at an original speed.

[0032] As an improvement of the above solution, the method further includes:

[0033] When the condensing fan is not faulty, obtaining a compressor temperature of the compressor;

[0034] When the compressor temperature is greater than or equal to the temperature threshold and the duration reaches the first duration threshold, the rotation speed of the compressor is reduced and the rotation speed of the condensing fan is increased.

[0035] As an improvement of the above solution, the method further includes:

[0036] When the compressor is at the lowest speed gear, the condensing fan is at the highest speed gear and the duration reaches a preset second duration threshold, it is determined that the compressor is faulty.

[0037] As an improvement of the above solution, after obtaining the compressor temperature detected by the compressor temperature sensor, the method further includes:

[0038] When the compressor temperature is lower than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, the compressor is controlled to operate at the current speed.

[0039] A refrigerator and a control method thereof disclosed in the present invention can detect the surface temperature of the compressor by arranging a temperature sensor in the cabinet. When a condensing fan fails, the fault type can be identified, and the operation of the compressor and the condensing fan can be controlled accordingly according to the fault type, so as to meet the refrigeration demand of the cabinet to the greatest extent, improve product reliability, and enhance user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic diagram of the external structure of a refrigerator provided by an embodiment of the present invention;

[0041] Figure 2 is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention;

[0042] Figure 3 is a schematic structural diagram of a refrigeration system in a refrigerator provided by an embodiment of the present invention;

[0043] Figure 4 is another schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention;

[0044] Figure 5 is a structural schematic diagram of a compressor compartment of a refrigerator provided by an embodiment of the present invention;

[0045] Figure 6 is a schematic diagram of the connection between the controller and other hardware devices provided by an embodiment of the present invention;

[0046] Figure 7 is a first working flow diagram of a controller provided by an embodiment of the present invention;

[0047] Figure 8 is a second working flow diagram of the controller provided by an embodiment of the present invention;

[0048] Fig. 9 is a third working flow diagram of the controller provided in an embodiment of the present invention;

[0049] Fig.10 is a fourth working flow diagram of the controller provided by an embodiment of the present invention;

[0050] Fig.11 The flowchart of a refrigerator and a control method thereof provided by an embodiment of the present invention.

[0051] Among them, 100, refrigerator; 1, compressor; 2, evaporator; 3, capillary; 4, condenser; 5, condensing fan; 11, freezer; 12, refrigerator; 111, ambient temperature sensor; 112, compressor temperature sensor. DETAILED DESCRIPTION

[0052] 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.

[0053] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0054] The terms "first", "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0055] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] See also Figure 1 , Figure 1It is a schematic diagram of the external structure of a refrigerator 100 provided in an embodiment of the present invention. The refrigerator described in the embodiment of the present invention is an air-cooled refrigerator. The refrigerator 100 described in the embodiment of the present invention is approximately in the shape of a rectangular parallelepiped. The refrigerator includes a box body that defines a storage space and a plurality of door bodies arranged at the opening of the box body, wherein the door body includes a door body shell located on the outside of the box body, a door body liner located on the inside of the box body, an upper end cover, a lower end cover, and an insulating layer located between the door body shell, the door body liner, the upper end cover, and the lower end cover; usually, the insulating layer is filled with foam material. The box body is provided with a chamber, wherein the chamber includes a component storage chamber for placing components in the refrigerator, such as a press cabin, etc., and also includes a storage space for storing food, etc. A display screen is provided at the door of the refrigerator, and the display screen is used to display prompt information and receive user touch operations.

[0057] See also Figure 2 , Figure 2 1 is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention. The storage space can be divided into multiple storage rooms. The storage rooms can be configured as a freezer 11 and a refrigerator 12 according to different uses. They can also include a variable temperature room, a vacuum drawer, a moisturizing drawer, etc. In the refrigerator 100 shown in the embodiment of the present invention, the freezer 11 is located above the refrigerator 12. In other embodiments, the freezer 11 can also be located below the refrigerator 12. Each storage room corresponds to one or more door bodies, for example, Figure 1 In the freezer compartment 11 at the top, a double-door body is provided. The door body can be pivotally arranged at the opening of the box body, and can also be opened in a drawer-like manner to realize drawer-like storage.

[0058] See also Figure 3 , Figure 3The schematic diagram of the structure of the refrigeration system in the refrigerator provided by the embodiment of the present invention, the refrigeration system includes a compressor 1, an evaporator 2, a drying filter (not shown in the figure), a capillary tube 3, a condenser 4 and a gas-liquid separator (not shown in the figure). The working process of the refrigeration system includes a compression process, a condensation process, a throttling process and an evaporation process. The compression process is: plug in the power cord of the refrigerator, when the contacts of the thermostat are connected, the compressor 1 starts to work, and the low-temperature and low-pressure refrigerant is sucked into the compressor 1, and is compressed into a high-temperature and high-pressure superheated gas in the cylinder of the compressor 1 and then discharged into the condenser 4; the condensation process is: the high-temperature and high-pressure refrigerant gas dissipates heat through the condenser 4, the temperature continues to drop, and is gradually cooled to a saturated vapor of normal temperature and high pressure, and is further cooled to a saturated liquid, and the temperature no longer drops. The temperature at this time is called the condensation temperature, and the pressure of the refrigerant remains almost unchanged during the entire condensation process; the throttling process is as follows ... The process is as follows: the condensed refrigerant saturated liquid is filtered through a drying filter to remove moisture and impurities and then flows into the capillary 3, through which it is throttled and depressurized, and the refrigerant becomes wet steam at room temperature and low pressure; the evaporation process is as follows: the wet steam at room temperature and low pressure begins to absorb heat and vaporize in the evaporator 2, which not only reduces the temperature of the evaporator 2 and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator 2 passes through the gas-liquid separator and returns to the compressor 1 again, repeating the above process to transfer the heat in the refrigerator to the air outside the box, thereby achieving the purpose of refrigeration.

[0059] See also Figure 4 , Figure 4 1 is another schematic diagram of the internal structure of a refrigerator provided in an embodiment of the present invention. The storage chamber can be configured as a freezer chamber 11 and a refrigerator chamber 12, wherein the freezer chamber 11 is located at the upper part of the refrigerator chamber 12. In other embodiments, the freezer chamber 11 can also be located at the lower part of the refrigerator chamber 12. An ambient temperature sensor 111 is provided outside the body of the refrigerator 100, and the ambient temperature sensor 111 is used to detect the ambient temperature of the environment outside the refrigerator.

[0060] See also Figure 5 , Figure 5 It is a structural schematic diagram of a compressor compartment of a refrigerator provided in an embodiment of the present invention. The compressor compartment includes a compressor 1, a compressor temperature sensor 112 and a condensing fan 5. The compressor 1 is used to provide refrigeration cycle power. Low-temperature, low-pressure refrigerant is sucked into the compressor 1, compressed into high-temperature, high-pressure superheated gas in the cylinder of the compressor 1, and then discharged. The condensing fan 5 is used to dissipate heat for the compressor 1. The compressor temperature sensor 112 is arranged on the compressor to detect the compressor temperature of the compressor 1.

[0061] See also Figure 6 , Figure 6It is a connection diagram of the controller provided in an embodiment of the present invention and the other hardware devices. The detection values ​​of the ambient temperature sensor 111 and the compressor temperature sensor 112 are obtained through the controller in the refrigerator, and the opening and closing of the ambient temperature sensor 111 and the compressor temperature sensor 112 are controlled by the controller, and the rotation speed of the compressor 1 and the condensing fan 5 are controlled.

[0062] Specifically, the controller is configured to: when the refrigerator is running, obtain the compressor temperature detected by the compressor temperature sensor; when the compressor temperature is greater than or equal to a preset temperature threshold, and the duration reaches a preset first duration threshold, determine that the fault type of the condensing fan is a shutdown fault; wherein the fault types of the condensing fan include shutdown faults and feedback line faults; obtain the ambient temperature value detected by the ambient temperature sensor; when the ambient temperature value is less than the preset ambient temperature threshold, control the compressor to run at the original speed.

[0063] For example, see Figure 7 , Figure 7It is the first working flow chart of the controller provided in an embodiment of the present invention, and the controller is configured to execute steps S101 to S108. The compressor temperature sensor arranged on the compressor detects the compressor temperature, and the compressor temperature threshold is set in advance according to the lowest melting point of the plastic parts around the compressor. The outside of the refrigerator is provided with an ambient temperature sensor for detecting the ambient temperature value of the environment outside the refrigerator and setting the ambient temperature threshold. After the refrigerator is powered on, the refrigerator will perform a self-check. If the display panel shows that the condensing fan is faulty, it is necessary to analyze the type of fault. At this time, there are two causes of the fault. One is that the condensing fan has a shutdown fault (which may be caused by the condensing fan running for too long and causing damage, such as the power supply line is disconnected). At this time, the condensing fan does not rotate. The other is that the feedback line of the condensing fan has a fault (which may be caused by long-term use, aging or wear of the line). At this time, the condensing fan will rotate, but because the feedback line of the feedback signal that feeds back the real-time speed is interrupted, the real-time speed cannot be fed back. The compressor temperature value detected by the compressor temperature sensor is obtained, and compared with the preset compressor temperature threshold. If the compressor temperature is greater than or equal to the preset compressor temperature threshold, and the duration reaches the preset first duration threshold, it indicates that the compressor is overheated and the duration is too long. The temperature has reached the lowest melting point of the surrounding plastic parts. This is caused by the condensing fan failing to dissipate heat in time, indicating that the condensing fan can no longer work normally. At this time, the fault type of the condensing fan is determined to be a shutdown fault. After determining that the condensing fan has a shutdown fault, an ambient temperature determination is performed, and the ambient temperature value detected by the ambient temperature sensor is obtained, and compared with the preset ambient temperature threshold. When the ambient temperature value is less than the preset ambient temperature threshold, it indicates that the ambient temperature is low. At this time, the cooling effect can be achieved by relying on the external ambient temperature, so the heat dissipation requirement is relatively low, and the controller controls the compressor to run at the original speed.

[0064] Specifically, the controller is also configured to: when the compressor temperature is lower than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, determine that the fault type of the condensing fan is a feedback line fault; control the compressor to operate at the original speed, and control the condensing fan to operate at a preset maximum speed gear.

[0065] For example, see Figure 8 , Figure 8It is the second working flow chart of the controller provided by the embodiment of the present invention. After executing step S104, the controller is further configured to execute steps S201 to S203. When the temperature of the compressor is less than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, it indicates that the temperature of the compressor is within the normal range and the condensing fan is dissipating heat normally. Although the display panel reports a condensing fan failure, the actual condensing fan is still rotating. At this time, it is determined that the fault type of the condensing fan is a feedback line failure, and the controller controls the compressor to run at the original speed. In addition, since the display panel of the refrigerator has already issued a condensing fan failure alarm, corresponding processing is required to control the condensing fan to run at the preset maximum speed gear, accelerate the heat dissipation of the compressor, and prevent the subsequent increase in compressor temperature from affecting the operation of the condensing fan.

[0066] Specifically, the controller is also configured to: when the ambient temperature value is greater than or equal to a preset ambient temperature threshold, reduce the speed of the compressor to a first low speed; after reducing the speed of the compressor, if the compressor temperature is greater than or equal to the temperature threshold, and the duration of the compressor temperature being greater than or equal to the temperature threshold reaches the first duration threshold, reduce the speed of the compressor from the first low speed to a second low speed; if the compressor temperature is less than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, control the compressor to operate at the first low speed.

[0067] For example, see Fig. 9 , Fig. 9It is the third working flow chart of the controller provided by the embodiment of the present invention. After executing step S107, the controller is further configured to execute steps S301 to S305. After determining that the condensing fan has a shutdown fault in step S106, the condensing fan will not rotate at this time, and the ambient temperature is further monitored. When the ambient temperature value is greater than or equal to the preset ambient temperature threshold, it indicates that the current ambient temperature is high and the corresponding heat dissipation requirement is also high. At this time, it has been determined that the condensing fan is unable to rotate due to a shutdown fault, so it is necessary to reduce the speed of the compressor to the first low speed to cool the compressor (the lower the compressor speed, the lower the compressor temperature). After reducing the compressor speed to the first low speed, if the compressor temperature is less than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, that is, the compressor temperature is within the normal range, even if the temperature is too high for a period of time, it is only maintained for a short time, and there is no need to continue to reduce the compressor speed, and the compressor is controlled to operate at the first low speed. After reducing the compressor speed to the first low speed, if the compressor temperature is still greater than or equal to the temperature threshold, and the duration of the compressor temperature being greater than or equal to the temperature threshold reaches the first duration threshold, that is, the compressor temperature is still too high and the duration is too long, then continue to reduce the compressor temperature from the first low speed to the second low speed until the compressor temperature is less than the temperature threshold. The specific values ​​of the first speed and the second speed can be set according to empirical values ​​and are not specifically limited here. With the above-mentioned implementation, even when the condensing fan fails and cannot rotate, the refrigeration and heat dissipation of the refrigerator can be balanced.

[0068] Specifically, the controller is also configured to: when the condensing fan is not faulty, obtain the compressor temperature detected by the compressor temperature sensor; when the compressor temperature is greater than or equal to the temperature threshold and the duration reaches the first duration threshold, reduce the speed of the compressor and increase the speed of the condensing fan.

[0069] For example, see Fig.10 , Fig.10 It is the fourth working flow chart of the controller provided by the embodiment of the present invention, and the controller is configured to execute steps S401 to S406. During the operation of the refrigerator, if the display panel does not show that the condensing fan has failed, the compressor temperature detected by the compressor temperature sensor is obtained and compared with the preset compressor temperature threshold. When the compressor temperature is greater than or equal to the temperature threshold and the duration reaches the first duration threshold, it indicates that the compressor is overheated and the duration is too long. At this time, the heat dissipation requirement is relatively high. Since the condensing fan has not failed, the speed of the compressor is reduced, and the speed of the condensing fan is increased to speed up the heat dissipation.

[0070] Specifically, after executing step S406, the controller is further configured to determine that the compressor is faulty when the compressor is at the lowest speed gear, the condensing fan is at the highest speed gear and the duration reaches a preset second duration threshold.

[0071] Exemplarily, when the compressor is overheated and lasts for too long, the compressor speed is reduced and the condensing fan speed is increased, the compressor will cool down, and the controller will automatically detect the compressor temperature. After the compressor cools down, the compressor speed will increase and the condensing fan speed will decrease. If the condensing fan speed does not decrease, and the compressor is still at a low speed, and the duration has reached the preset second duration threshold, it indicates that the compressor itself is blocked. At this time, the controller reports a compressor failure and sends a prompt message to inform the user that the compressor needs to be repaired. Exemplarily, the prompt message includes but is not limited to at least one of text prompts, voice prompts, light prompts, and client remote prompts.

[0072] Specifically, after obtaining the compressor temperature detected by the compressor temperature sensor, the controller is also configured to: when the compressor temperature is lower than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, control the compressor to operate at the current speed.

[0073] Exemplarily, when the compressor temperature is lower than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, it indicates that the compressor temperature is within a normal range. At this time, neither the compressor nor the condensing fan fails, and the compressor is controlled to run at the current speed.

[0074] The refrigerator disclosed in the present invention, by arranging a temperature sensor in the box body to detect the surface temperature of the compressor, can identify the fault type when a condensing fan fault is identified, and control the operation of the compressor and the condensing fan accordingly according to the fault type, thereby meeting the refrigeration needs of the box body to the greatest extent, improving product reliability, and enhancing user experience.

[0075] See also Fig.11 , Fig.11 : is a flow chart of a refrigerator control method provided by an embodiment of the present invention. The refrigerator control method is implemented by a controller in the refrigerator. The refrigerator control method includes:

[0076] S1. When the refrigerator is running, obtaining the compressor temperature of the compressor;

[0077] S2. When the compressor temperature is greater than or equal to a preset temperature threshold and the duration reaches a preset first duration threshold, it is determined that the fault type of the condensing fan is a shutdown fault; wherein the fault types of the condensing fan include a shutdown fault and a feedback line fault;

[0078] S3, obtaining the ambient temperature outside the refrigerator;

[0079] S4. When the ambient temperature value is less than a preset ambient temperature threshold, the compressor is controlled to operate at an original speed.

[0080] Exemplarily, a compressor temperature sensor is provided on the compressor to detect the compressor temperature, and a compressor temperature threshold is set in advance according to the lowest melting point of the plastic parts around the compressor. An ambient temperature sensor is provided on the outside of the refrigerator to detect the ambient temperature value of the environment outside the refrigerator and set the ambient temperature threshold. After the refrigerator is powered on, the refrigerator will perform a self-check. If the display panel shows that the condensing fan is faulty, it is necessary to analyze the type of fault. At this time, there are two causes of the fault. One is that the condensing fan has a shutdown fault (which may be caused by the condensing fan being damaged due to running for too long, such as a power supply line being disconnected). At this time, the condensing fan does not rotate. The other is that the condensing fan has a feedback line fault (which may be caused by long-term use, aging or wear of the line). At this time, the condensing fan will rotate, but the feedback line of the feedback signal that feeds back the real-time speed is interrupted, resulting in the inability to feed back the real-time speed. The compressor temperature value detected by the compressor temperature sensor is obtained, and compared with the preset compressor temperature threshold. If the compressor temperature is greater than or equal to the preset compressor temperature threshold, and the duration reaches the preset first duration threshold, it indicates that the compressor is overheated and the duration is too long. The temperature has reached the lowest melting point of the surrounding plastic parts. This is caused by the condensing fan failing to dissipate heat in time, indicating that the condensing fan can no longer work normally. At this time, the fault type of the condensing fan is determined to be a shutdown fault. After determining that the condensing fan has a shutdown fault, an ambient temperature determination is performed, and the ambient temperature value detected by the ambient temperature sensor is obtained, and compared with the preset ambient temperature threshold. When the ambient temperature value is less than the preset ambient temperature threshold, it indicates that the ambient temperature is low. At this time, the cooling effect can be achieved by relying on the external ambient temperature, so the heat dissipation requirement is relatively low, and the controller controls the compressor to run at the original speed.

[0081] Specifically, the method also includes: when the compressor temperature is lower than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, judging that the fault type of the condensing fan is a feedback line fault; controlling the compressor to operate at the original speed, and controlling the condensing fan to operate at a preset maximum speed gear.

[0082] For example, when the compressor temperature is less than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, it indicates that the temperature of the compressor is within the normal range, and the condensing fan is dissipating heat normally. Although the display panel reports a condensing fan failure, the actual condensing fan is still rotating. At this time, the condensing fan failure type is determined to be a feedback line failure, and the controller controls the compressor to run at the original speed. In addition, since the refrigerator display panel has already issued a condensing fan failure alarm, corresponding processing is required to control the condensing fan to run at the preset highest speed gear, speed up the heat dissipation of the compressor, and prevent the subsequent increase in compressor temperature from affecting the operation of the condensing fan.

[0083] Specifically, the method also includes: when the ambient temperature value is greater than or equal to a preset ambient temperature threshold, reducing the speed of the compressor to a first low speed; after reducing the speed of the compressor, if the compressor temperature is greater than or equal to the temperature threshold, and the duration of the compressor temperature being greater than or equal to the temperature threshold reaches the first duration threshold, reducing the speed of the compressor from the first low speed to a second low speed; if the compressor temperature is less than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, controlling the compressor to operate at the first low speed.

[0084] For example, after determining that the condensing fan has a shutdown fault, the condensing fan will not rotate at this time, and the ambient temperature is further monitored. When the ambient temperature value is greater than or equal to the preset ambient temperature threshold, it indicates that the current ambient temperature is high and the corresponding heat dissipation requirement is also high. At this time, it has been determined that the condensing fan is unable to rotate due to a shutdown fault, so it is necessary to reduce the speed of the compressor to a first low speed to cool the compressor (the lower the compressor speed, the lower the compressor temperature). After reducing the compressor speed to the first low speed, if the compressor temperature is less than the temperature threshold, or the duration of the compressor temperature being greater than or equal to the temperature threshold does not reach the first duration threshold, that is, the compressor temperature is within the normal range, even if the temperature is too high for a period of time, it is only maintained for a short time, and there is no need to continue to reduce the compressor speed, and the compressor is controlled to operate at the first low speed. After reducing the compressor speed to the first low speed, if the compressor temperature is still greater than or equal to the temperature threshold, and the duration of the compressor temperature being greater than or equal to the temperature threshold reaches the first duration threshold, that is, the compressor temperature is still too high and the duration is too long, then continue to reduce the temperature of the compressor from the first low speed to the second low speed until the compressor temperature is less than the temperature threshold.

[0085] Specifically, the method also includes: when the condensing fan is not faulty, obtaining the compressor temperature of the compressor; when the compressor temperature is greater than or equal to the temperature threshold and the duration reaches the first duration threshold, reducing the speed of the compressor and increasing the speed of the condensing fan.

[0086] Exemplarily, when the refrigerator is powered on and running, if the display panel does not show that the condensing fan has failed, the compressor temperature detected by the compressor temperature sensor is obtained and compared with the preset compressor temperature threshold. When the compressor temperature is greater than or equal to the temperature threshold and the duration reaches the first duration threshold, it indicates that the compressor is overheated and the duration is too long. At this time, the heat dissipation requirement is relatively high. Since the condensing fan has not failed, the speed of the compressor is reduced and the speed of the condensing fan is increased to speed up the heat dissipation.

[0087] Specifically, the method further includes: when the compressor is at the lowest speed gear, the condensing fan is at the highest speed gear and the duration reaches a preset second duration threshold, determining that the compressor is faulty.

[0088] Exemplarily, when the compressor is overheated and lasts for too long, the compressor speed is reduced and the condensing fan speed is increased, the compressor will cool down, and the controller will automatically detect the compressor temperature. After the compressor cools down, the compressor speed will increase and the condensing fan speed will decrease. If the condensing fan speed does not decrease, and the compressor is still at a low speed, and the duration has reached the preset second duration threshold, it indicates that the compressor itself is blocked. At this time, the controller reports a compressor failure and sends a prompt message to inform the user that the compressor needs to be repaired. Exemplarily, the prompt message includes but is not limited to at least one of text prompts, voice prompts, light prompts, and client remote prompts.

[0089] Specifically, after obtaining the compressor temperature detected by the compressor temperature sensor, the method also includes: when the compressor temperature is lower than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, controlling the compressor to operate at the current speed.

[0090] Exemplarily, when the compressor temperature is lower than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, it indicates that the compressor temperature is within a normal range. At this time, neither the compressor nor the condensing fan fails, and the compressor is controlled to run at the current speed.

[0091] The refrigerator control method disclosed in the present invention, by arranging a temperature sensor in the cabinet to detect the surface temperature of the compressor, can identify the fault type when a condensing fan fault is identified, and control the operation of the compressor and the condensing fan accordingly according to the fault type, thereby meeting the refrigeration needs of the cabinet to the greatest extent, improving product reliability, and enhancing user experience.

[0092] 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: A box body, in which at least one storage chamber and a compressor compartment are formed, the storage chamber includes at least a refrigerating chamber and a freezing chamber, the compressor compartment includes a compressor and a condensing fan, the compressor is used to provide refrigeration cycle power, and the condensing fan is used to dissipate heat from the compressor; A door, used for opening and closing the storage chamber; A compressor temperature sensor, provided on the compressor, for detecting the compressor temperature; An ambient temperature sensor is disposed outside the refrigerator and is used to detect the ambient temperature outside the refrigerator; The controller is configured as: When the refrigerator is running, obtaining the compressor temperature detected by the compressor temperature sensor; When the compressor temperature is greater than or equal to a preset temperature threshold and the duration reaches a preset first duration threshold, it is determined that the fault type of the condensing fan is a shutdown fault; wherein the fault types of the condensing fan include a shutdown fault and a feedback line fault; Acquire the ambient temperature value detected by the ambient temperature sensor; When the ambient temperature value is less than a preset ambient temperature threshold, the compressor is controlled to run at an original speed.

2. The refrigerator according to claim 1, characterized in that: The controller is also configured to: When the compressor temperature is lower than the temperature threshold, or the duration of the compressor temperature being higher than or equal to the temperature threshold does not reach the first duration threshold, it is determined that the fault type of the condensing fan is a feedback line fault; The compressor is controlled to run at the original speed, and the condensing fan is controlled to run at a preset maximum speed gear.

3. The refrigerator according to claim 1, characterized in that: The controller is also configured to: When the ambient temperature value is greater than or equal to a preset ambient temperature threshold, reducing the speed of the compressor to a first low speed; After reducing the speed of the compressor, if the temperature of the compressor is greater than or equal to the temperature threshold, and the duration for which the temperature of the compressor is greater than or equal to the temperature threshold reaches the first duration threshold, reducing the speed of the compressor from the first low speed to a second low speed; If the compressor temperature is lower than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, the compressor is controlled to operate at a first low speed.

4. The refrigerator according to claim 1, characterized in that: The controller is also configured to: When the condensing fan is not faulty, obtaining the compressor temperature detected by the compressor temperature sensor; When the compressor temperature is greater than or equal to the temperature threshold and the duration reaches the first duration threshold, the rotation speed of the compressor is reduced and the rotation speed of the condensing fan is increased.

5. The refrigerator according to claim 4, characterized in that: The controller is also configured to: When the compressor is at the lowest speed gear, the condensing fan is at the highest speed gear and the duration reaches a preset second duration threshold, it is determined that the compressor is faulty.

6. The refrigerator according to claim 4, characterized in that: After acquiring the compressor temperature detected by the compressor temperature sensor, the controller is further configured to: When the compressor temperature is lower than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, the compressor is controlled to operate at the current speed.

7. A refrigerator control method, characterized in that: include: When the refrigerator is running, the compressor temperature of the compressor is obtained; When the compressor temperature is greater than or equal to a preset temperature threshold and the duration reaches a preset first duration threshold, it is determined that the fault type of the condensing fan is a shutdown fault; wherein the fault types of the condensing fan include a shutdown fault and a feedback line fault; Get the ambient temperature outside the refrigerator; When the ambient temperature value is less than a preset ambient temperature threshold, the compressor is controlled to run at an original speed.

8. The refrigerator control method according to claim 7, characterized in that: The method further comprises: When the condensing fan is not faulty, obtaining a compressor temperature of the compressor; When the compressor temperature is greater than or equal to the temperature threshold and the duration reaches the first duration threshold, the rotation speed of the compressor is reduced and the rotation speed of the condensing fan is increased.

9. The refrigerator control method according to claim 8, characterized in that: The method further comprises: When the compressor is at the lowest speed gear, the condensing fan is at the highest speed gear and the duration reaches a preset second duration threshold, it is determined that the compressor is faulty.

10. The refrigerator control method according to claim 8, characterized in that: After acquiring the compressor temperature detected by the compressor temperature sensor, the method further includes: When the compressor temperature is lower than the temperature threshold, or the duration for which the compressor temperature is greater than or equal to the temperature threshold does not reach the first duration threshold, the compressor is controlled to operate at the current speed.

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