Refrigerator and method for controlling refrigeration of refrigerator

Abstract

The application discloses a refrigerator and a refrigeration control method of the refrigerator. When it is detected that a door body changes from a closed state to an open state, a weight sensor detects weight change information of the door body every time during the door body changes from the open state to the closed state. When the weight change information is not an empty set, taking and placing article information of a user during the period is recognized according to the obtained weight change information and a preset article weight library. The taking and placing article information comprises weight information of taken articles and / or weight information of newly placed articles. Required cold quantity is calculated according to the recognized taking and placing article information, and working parameters of the compressor are controlled according to the calculated required cold quantity. Taking, accurate calculation of a cold quantity change process during the opening process, a one-time adjustment scheme and accurate refrigeration control are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerators, and in particular to a refrigerator and a self-cleaning control method of the refrigerator. BACKGROUND

[0002] Generally, the air-cooled refrigerator controls the start and stop of the compressor by detecting the actual temperature of the temperature sensor of each chamber to realize the control of the temperature of each chamber. When the indoor temperature is higher than the temperature of the probe, the machine is started, and when the indoor temperature is lower than the temperature of the probe, the machine is stopped. In this way, the temperature is within the limited value.

[0003] However, the food in the refrigerator is constantly changing when the user uses the refrigerator. The existing variable frequency refrigerator starts the high speed mode when the door is opened or the sensor temperature rises. However, the food in the refrigerator is constantly changing when the user uses the refrigerator. The existing fixed control mode does not match the total amount of food in the refrigerator, and cannot control the refrigeration according to the cold demand of the food in the refrigerator. The refrigeration power of the refrigerator is not accurate enough, which will cause waste of cold and power, and affect the refrigeration effect of the refrigerator. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a refrigerator and a refrigeration control method of the refrigerator, which matches the corresponding control parameters according to the change of the weight information of the food in the refrigerator, realizes the accurate control of the refrigeration process, and improves the refrigeration effect and energy saving of the refrigerator.

[0005] The embodiments of the present application provide a refrigerator, which comprises:

[0006] a cabinet;

[0007] a door body arranged at an opening of the cabinet;

[0008] a storage chamber arranged in the cabinet and used for storing articles;

[0009] a weight sensor arranged in the storage chamber and used for collecting the weight of the articles stored in the storage chamber;

[0010] a compressor arranged in the cabinet and used for realizing the circulation of refrigerant;

[0011] a controller configured to:

[0012] detect the weight change information of the articles stored in the storage chamber when the door body changes from the closed state to the open state through the weight sensor.

[0013] when the weight change information is not empty, identifying taking and placing article information of the user during the period according to the obtained weight change information and a preset article weight library, the taking and placing article information including weight information of taken articles and / or weight information of newly placed articles;

[0014] calculating required cold quantity according to the identified taking and placing article information, and controlling an operating parameter of the compressor according to the calculated required cold quantity.

[0015] Preferably, the controller is further configured to:

[0016] matching a corresponding control rotating speed in a preset rotating speed matching database according to the calculated required cold quantity, the rotating speed matching database including a corresponding relationship between each required cold quantity and control rotating speed;

[0017] controlling the compressor to operate at the control rotating speed.

[0018] Further, comprising:

[0019] a temperature sensor arranged in the storage chamber and configured to collect a current temperature of the storage chamber;

[0020] The controller is further configured to:

[0021] detecting the current temperature detected by the temperature sensor at a previous time as a start-up temperature when detecting that the door body changes from the closed state to the open state;

[0022] controlling the operating parameter of the compressor according to the calculated required cold quantity, and restoring the operating parameter of the compressor to an initial parameter before the door body is opened when a difference between the current temperature of the temperature sensor in real time and the start-up temperature is less than a first preset threshold.

[0023] As an improvement of the above scheme, the controller is further configured to:

[0024] detecting a current temperature acquired by the temperature sensor when the door body changes from the open state to the closed state as a closed temperature when the weight change information is empty;

[0025] increasing the rotating speed of the compressor by a preset value from an initial rotating speed before the door body is opened when a difference between the closed temperature and the start-up temperature is greater than a second preset threshold, and controlling the compressor to operate at the increased rotating speed until a difference between the current temperature of the temperature sensor in real time and the start-up temperature is less than a third preset threshold, and then restoring the rotating speed of the compressor to the initial rotating speed.

[0026] Preferably, the article weight library specifically includes weight information of current storage articles in the storage chamber.

[0027] The controller is further configured to:

[0028] When the weight change information includes a weight reduction value, if the difference between a weight reduction value and the product of a weight information in the item weight database and a ratio in the preset ratio database is in the first preset range, the item with the weight reduction value is determined to be a retrieved item, and the weight reduction value is the weight of the retrieved item.

[0029] When the weight change information includes a weight increase value, each weight increase value is compared with each weight decrease value in the weight change information; when the difference between a certain weight increase value and the product of any weight decrease value in the weight change information and any ratio in the preset ratio library is not in the first preset range, the item with the weight increase value is determined to be a newly placed item, and the weight increase value is the weight of the newly placed item.

[0030] Furthermore, the weight change information also includes the time when each weight change occurred;

[0031] The controller is also used for:

[0032] When the weight change information includes a weight increase value and a weight decrease value, and the difference between a certain weight decrease value and the product of any weight information in the item weight database and any ratio in the ratio database is not in the first preset range, and the difference between the weight decrease value and the product of a newly placed item that occurred before the weight decrease value and a certain ratio in the ratio database is in the first preset range, the item with the weight decrease value is determined to be an item that was placed and then taken out first, and the weight decrease value is the weight of the item that was placed and then taken out first.

[0033] When the weight change information includes a weight increase value and a weight decrease value, and the difference between a certain weight increase value and the product of the weight of a certain item taken out before the weight increase value in the weight change information and a certain ratio in the ratio library is within the first preset range, it is determined that the item with the weight increase value is an item that was taken out and then put back, and the weight decrease value is the weight of the item that was taken out and then put back.

[0034] As an improvement to the above solution, the required cooling capacity is specifically as follows:

[0035] ;

[0036] in, For items i The weight, c represents the temperature difference of the newly placed object; c represents the fixed thermal property of the object. q Let i ∈ [the set of all newly placed items in the item placement information]. q , For items j The weight,p a set of all the first-put-then-taken items in the put-and-taken item information, j ∈ p， a weight of the item, k g a set of all the first-taken-then-put items in the put-and-taken item information, k ∈ g , a weight of the item, n h a set of all the taken-out items in the put-and-taken item information, n ∈ h， a preset equivalent temperature difference.

[0037] Preferably, the controller is further configured to:

[0038] when the taken-out item is included in the put-and-taken item information, deleting the weight information of the taken-out item each time from the item weight library and updating the item weight library;

[0039] when the newly-put item is included in the put-and-taken item information, adding the weight information of the newly-put item each time to the item weight library and updating the item weight library;

[0040] when the first-put-then-taken item is included in the put-and-taken item information, deleting the weight information of the first-put-then-taken item each time from the item weight library and updating the item weight library;

[0041] when the first-taken-then-put item is included in the put-and-taken item information, adding the weight information of the first-taken-then-put item each time to the item weight library and updating the item weight library.

[0042] As a preferred solution, the controller is further configured to:

[0043] after obtaining the weight change each time of the storage compartment, counting the weight change value each time and screening out the weight change value lower than a fourth preset threshold;

[0044] taking the screened-out weight change value as the weight change information; the weight change information is an empty set or includes the increased weight value and / or the decreased weight value.

[0045] The embodiment of the present application further provides a refrigeration control method of a refrigerator, and the method comprises the following steps:

[0046] when detecting that the door body of the refrigerator changes from the closed state to the open state, detecting, by the weight sensor arranged in the storage compartment of the refrigerator, the weight change each time in the storage compartment during the period when the door body changes from the open state to the closed state, and obtaining weight change information; ​​

[0047] When the weight change information is not empty, the taking and placing information of the user during the period is identified according to the obtained weight change information and the preset article weight library, and the taking and placing information includes the weight information of the taken article and / or the weight information of the newly placed article.

[0048] The required cold quantity is calculated according to the identified taking and placing information, and the working parameter of the compressor of the refrigerator is controlled according to the calculated required cold quantity.

[0049] Compared with the prior art, the refrigerator and the refrigeration control method of the refrigerator disclosed by the application, when it is detected that the door body changes from the closed state to the open state, the weight change information is obtained by detecting the weight change in the storage chamber each time during the period when the door body changes from the open state to the closed state through the weight sensor; when the weight change information is not empty, the taking and placing information of the user during the period is identified according to the obtained weight change information and the preset article weight library, and the taking and placing information includes the weight information of the taken article and / or the weight information of the newly placed article; the required cold quantity is calculated according to the identified taking and placing information, and the working parameter of the compressor is controlled according to the calculated required cold quantity. By using the technical means of the embodiment of the application, each step of taking out or placing in the article can be accurately determined. In the prior art, the weight of the newly placed article and the taken out article may be offset, but the interference of the two on the cold quantity in the refrigerator is not the same. The newly placed article is a normal temperature article, and additional cold quantity is required to reduce the temperature of the article to the preset temperature of the refrigerator, while the taken out article does not need to be deducted corresponding cold quantity. When the power is adjusted according to each weight change in the prior art, the taking and placing behavior of the user needs to be controlled and adjusted for many times during the opening of the door, and the working condition of the compressor is frequently changed, which may cause a large amount of energy waste and reduce the service life of the compressor. Therefore, the application can accurately identify each article taking, accurately calculate the cold quantity change process during the opening of the door, and accurately realize the refrigeration control by using a one-time adjustment scheme. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 is a structural schematic diagram of a refrigerator provided by an embodiment of the application;

[0051] Figure 2 is a refrigeration system structural schematic diagram of a refrigerator provided by an embodiment of the application;

[0052] Figure 3 is a flowchart of the work performed by the controller in the first embodiment;

[0053] Figure 4 is a structural schematic diagram of a refrigerator provided by an embodiment of the application;

[0054] Figure 5is a structural schematic diagram of a storage chamber provided by an embodiment of the present application;

[0055] Figure 6 is a structural schematic diagram of a bottom surface of a storage box provided by an embodiment of the present application;

[0056] Figure 7 is a control flow schematic diagram of work performed by a controller in an embodiment of the present application;

[0057] Figure 8 is a control flow schematic diagram of a controller in the present embodiment provided by the present application;

[0058] Figure 9 is a control flow schematic diagram of a controller in the present embodiment provided by the present application;

[0059] Figure 10 is a control flow schematic diagram of a controller in the present embodiment provided by the present application;

[0060] Figure 11 is a control flow schematic diagram of a controller in the present embodiment provided by the present application;

[0061] Figure 12 is a control flow schematic diagram of a controller in the present embodiment provided by the present application. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0063] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0064] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0065] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0066] Referring to Figure 1 , it is a structural schematic diagram of a refrigerator provided by an embodiment of the present application. The embodiment of the present application provides a refrigerator, which comprises a cabinet 101, a storage chamber 102 is arranged in the cabinet, comprising a refrigeration chamber and / or a freezing chamber 103, for storing items with preservation or freezing requirements, further comprising a refrigeration system 104, for performing refrigeration operation of the refrigerator.

[0067] It should be noted that the refrigerator performs refrigeration operation through the refrigeration system, and provides cold quantity transmission to the storage chamber, so as to maintain the storage chamber in a constant low temperature state. Specifically, referring to Figure 2 , it is a structural schematic diagram of a refrigeration system of a refrigerator provided by an embodiment of the present application. The refrigeration system is composed of a compressor 201, a condenser 202, a drying filter 203, a capillary tube 204 and an evaporator 205. The working composition of the refrigeration system comprises a compression process, a condensation process, a throttling process and an evaporation process.

[0068] Among them, the compression process is that the refrigerator power cord is plugged in, and the compressor starts to work when the cabinet has refrigeration demand. The low-temperature and low-pressure refrigerant is sucked into the compressor, and is compressed into high-temperature and high-pressure superheated gas in the cylinder of the compressor, and then is discharged to the condenser. The condensation process is that the high-temperature and high-pressure refrigerant gas is cooled by the condenser, and the temperature is constantly lowered, and is gradually cooled into saturated vapor at normal temperature and high pressure, and is further cooled into saturated liquid, and the temperature no longer decreases. At this time, the temperature is called condensation temperature. The pressure of the refrigerant in the whole condensation process is almost unchanged. The throttling process is that the saturated liquid refrigerant after condensation is filtered to remove water and impurities by the drying filter, and then flows into the capillary tube to reduce the pressure by throttling, and the refrigerant becomes wet vapor at normal temperature and low pressure. The evaporation process is that then the heat is absorbed in the evaporator to vaporize, not only the temperature of the evaporator and its surrounding is lowered, but also the refrigerant becomes low-temperature and low-pressure gas. The refrigerant from the evaporator returns to the compressor again, and repeats the above process, so as to transfer the heat in the refrigerator to the air outside the cabinet, and achieve the purpose of refrigeration.

[0069] It should be noted that the above embodiment is only as a specific structure and working principle of the conventional refrigerator, and the refrigerator disclosed in the embodiment can also have the structure of the existing refrigerator to realize the corresponding function.

[0070] The refrigerator provided by the embodiment of the application comprises a cabinet, a door body arranged at an opening of the cabinet, a storage chamber arranged in the cabinet and used for storing articles, a weight sensor arranged in the storage chamber and used for collecting the weight of the articles stored in the storage chamber, and a compressor arranged in the cabinet and used for realizing circulation of refrigerant.

[0071] The controller 306 can execute the refrigeration control operation of the refrigerator in response to a preset refrigeration instruction, and the refrigeration control operation of the refrigerator is described with reference to Figure 3 is a flowchart of the work of the controller in the first embodiment, and specifically comprises steps S1 to S3.

[0072] S1, when it is detected that the door body changes from the closed state to the open state, the weight sensor detects the weight change in the storage chamber each time during the period when the door body changes from the open state to the closed state, and weight change information is obtained.

[0073] S2, when the weight change information is not an empty set, the taking and placing article information of the user during this period is identified according to the obtained weight change information and a preset article weight library, and the taking and placing article information includes weight information of the taken article and / or weight information of the newly placed article.

[0074] S3, the required cold quantity is calculated according to the identified taking and placing article information, and the working parameter of the compressor is controlled according to the calculated required cold quantity.

[0075] Specifically, the controller 406 controls the working parameter of the compressor 202 according to the required cold quantity calculated by the weight sensor 404. Figure 4 is a structural diagram of the refrigerator provided by the embodiment of the application, and the refrigerator comprises a cabinet 101, a door body 402, a storage chamber 102, a weight sensor 404, a compressor 202 of a refrigeration system, and a controller 406.

[0076] The user can conveniently take and place the articles stored in the storage chamber through the door body arranged at the opening of the cabinet.

[0077] The storage chamber 102 can be specifically divided into a refrigeration chamber and a freezing chamber, which are respectively used for performing different article preservation functions.

[0078] The weight sensor 404 is arranged in the storage chamber 102 and is used for collecting the weight of the articles stored in the storage chamber.

[0079] The weight sensor is usually converted into an electrical output by a combination of spring elements and strain gauges. Among the various types of load cells, different models and styles can be distinguished by two key ways: 1. By the method they use to detect weight, load cells are divided into tension-compression load cells, tension load cells, and other measurement types; by the type of output signal generated, load cells are divided into hydraulic load cells, piezoelectric load cells, and various other configurations. Any type of load cell is always designed to work in the direction of gravity. The weight sensor used in the embodiment can be any one, which is used to convert the weight of the stored items in the storage compartment into an electrical signal output.

[0080] In order to improve the weight detection accuracy, the storage box in different storage compartments can be weighed respectively; see Figure 5 , which is a structural schematic diagram of a storage compartment provided by the embodiment of the present application. The storage box 501 of the storage compartment is distributed below the weight sensor 404, and a tension-compression load cell distributed below the storage compartment is used to detect the weight of the storage compartment.

[0081] In order to provide the weighing accuracy of the storage box and avoid the influence of the placement position of the items on the weighing, a plurality of weight sensors can be uniformly or non-uniformly distributed below the storage box, see Figure 6 , which is a structural schematic diagram of the bottom surface of the storage box provided by the embodiment of the present application. The bottom surface 601 of the storage box is distributed with a plurality of distributed sensors 602 for detecting weight, which are used to accurately detect the weight of the items in the storage box of the storage compartment.

[0082] The compressor is arranged in the box body and used as a key component of the refrigeration system to realize the circulation of the refrigerant.

[0083] The controller works concretely, see Figure 7 , which is a control flow diagram of the work performed by the controller in the embodiment of the present application.

[0084] S701, the refrigerator is powered on and started;

[0085] S702, the compressor starts to work with preset working parameters;

[0086] S703, whether the door state changes is detected;

[0087] If not, return to step S703, that is, continue to detect whether the door state changes;

[0088] If yes, it indicates that the door state is switched from the closed state to the open state at this time, and step S704 is executed at this time;

[0089] S704, the weight change in the storage compartment is collected through the weight sensor;

[0090] S705, determining whether the door switches from the open state to the closed state;

[0091] If not, returning to step S704, i.e. continuing to collect the weight change in the storage chamber through the weight sensor;

[0092] If yes, it indicates that the door switches from the open state to the closed state at this time, and the user has finished taking the articles, and step S706 is performed;

[0093] S706, outputting the weight change information, wherein the weight change information is composed of each weight change in the storage chamber during the period when the door switches from the open state to the closed state;

[0094] S707, determining whether the weight change information is an empty set;

[0095] If not, it indicates that the user takes the articles in the storage chamber at this time, and step S708 is performed;

[0096] S708, identifying the taking and placing articles information of the user during this period according to the obtained weight change information and the preset article weight library, wherein the taking and placing articles information includes the weight information of the taken articles and / or the weight information of the newly placed articles.

[0097] S709, calculating the required cold quantity according to the identified taking and placing articles information;

[0098] S710, controlling the working parameter of the compressor according to the calculated required cold quantity.

[0099] It should be noted that in the present embodiment, when the controller identifies that the weight change information is an empty set, it indicates that the user does not take any articles in the storage chamber at this time, and the working parameter of the compressor can not be controlled at this time, or other conventional control strategies of the prior art can be used to control the compressor.

[0100] It should be noted that in the present embodiment, after the required cold quantity is calculated, the compressor power can be controlled to be increased or decreased according to the size of the required cold quantity, or the compressor speed can be increased or decreased according to the size of the required cold quantity, so as to realize accurate control of refrigeration.

[0101] In the embodiment, the weight change in the storage compartment of the refrigerator each time the door is opened is calculated, the process of taking out and putting in the articles each time is calculated, the cold quantity change required for storing the articles in the storage compartment is accurately calculated, and the cold quantity is accurately calculated. Compared with the prior art of detecting the initial value of the article weight in the storage compartment before the door is opened and calculating the article change value after the door is closed, the present application can accurately calculate each step of taking out or putting in the articles. In the prior art, the weight of the new articles put in and the articles taken out may be offset, but the interference of the two on the cold quantity in the refrigerator is not the same. The newly put-in articles are normal-temperature articles, and additional cold quantity is required to reduce the articles to the preset temperature of the refrigerator, and the taken-out articles do not need to be deducted the corresponding cold quantity. When the power is adjusted according to the weight change each time in another prior art, the user's taking and putting behavior during the opening of the door needs to be controlled and adjusted multiple times, the compressor working condition is frequently changed, a large amount of energy is wasted, and the service life of the compressor is reduced. Therefore, the present application can accurately identify the taking of the articles each time, accurately calculate the cold quantity change process during the opening of the door, adopt a one-time adjustment scheme, and accurately realize the refrigeration control.

[0102] In another embodiment of the present application, the controller is further configured to:

[0103] match the calculated required cold quantity with a corresponding control speed in a preset speed matching database, wherein the speed matching database comprises a corresponding relationship between each required cold quantity and control speed;

[0104] control the compressor to work at the control speed.

[0105] In the specific implementation of the embodiment, the process of controlling the working parameters of the compressor according to the calculated required cold quantity specifically comprises:

[0106] matching the required cold quantity with a corresponding control speed in a preset speed matching database, wherein the speed matching database comprises a corresponding relationship between each required cold quantity and control speed;

[0107] controlling the compressor to work at the control speed to adapt to the change of the stored articles in the refrigerator.

[0108] It should be noted that when the speed of the refrigerator changes, the corresponding refrigeration capacity of the compressor of the refrigerator changes, and the input power, current, efficiency, noise, and vibration also change correspondingly. Referring to Table 1, under the test conditions, the speed division table of the refrigerator under the low back pressure LBP - national standard ASHRAE operating conditions, the input 220V / 50Hz voltage static working conditions, the evaporation temperature is -23.3℃, and the condensation temperature is 54.4℃.

[0109] Table 1: Compressor speed division table

[0110]

[0111] The rotation speed can be subdivided, and the rotation speed adjustment can be avoided frequently by taking 100 rotations as an interval.

[0112] It should be noted that the required cooling capacity can be positive or negative. When the required cooling capacity is positive, it indicates that the change of the items in the refrigerator causes the refrigerator to require increased cooling capacity to rapidly cool the newly added items in the refrigerator. When the required cooling capacity is negative, it indicates that the user can take out a large number of items at this time, so that the refrigerator does not need to maintain the high-power state due to the storage of a large number of items in the refrigerator. At this time, a low rotation speed can be matched to adapt to the storage requirement of a small number of items in the refrigerator.

[0113] In another embodiment provided by the application, the refrigerator further comprises:

[0114] a temperature sensor arranged in the storage chamber and configured to collect a current temperature of the storage chamber;

[0115] The controller is further configured to:

[0116] When it is detected that the door body changes from the closed state to the open state, the current temperature detected by the temperature sensor at the previous time is obtained as a start-up temperature;

[0117] After the working parameter of the compressor is controlled according to the calculated required cooling capacity, when the difference between the real-time current temperature of the temperature sensor and the start-up temperature is less than a first preset threshold, the working parameter of the compressor is restored to the initial parameter before the door is opened.

[0118] In the implementation of the embodiment, the controller collects the current temperature of the storage chamber of the refrigerator in real time through the temperature sensor, so as to perform a corresponding control process according to the collected current temperature.

[0119] Referring to Figure 8 is a control flowchart of the controller provided by the application in the embodiment; the controller performs the following steps:

[0120] S801, determining whether the door body changes from the closed state to the open state;

[0121] If not, return to step S801, that is, continue to determine whether the door body changes from the closed state to the open state;

[0122] If yes, it indicates that the door body changes from the closed state to the open state at this time, and the user needs to take or place the object at this time, and the compressor needs to be controlled according to the user's need for the object. At this time, step S802 is performed.

[0123] S802, obtaining a start-up temperature, that is, obtaining a current temperature detected by the temperature sensor at a previous time as the start-up temperature, the start-up temperature being a temperature set when the refrigerator is normally used.

[0124] S803, obtaining weight change information, identifying taking and placing article information of the user during the period, calculating required cooling capacity, and controlling the working parameter of the compressor according to the calculated required cooling capacity; that is, obtaining weight change information by detecting each weight change in the storage compartment during the period when the door body changes from an open door state to a closed door state through the weight sensor; when the weight change information is not an empty set, identifying taking and placing article information of the user during the period according to the obtained weight change information and a preset article weight library, the taking and placing article information including weight information of taken articles and / or weight information of newly placed articles; calculating required cooling capacity according to the identified taking and placing article information, and controlling the working parameter of the compressor according to the calculated required cooling capacity.

[0125] S804, obtaining a current temperature in real time through the temperature sensor;

[0126] S805, determining whether a difference between the current temperature and the start-up temperature is less than a first preset threshold value;

[0127] If not, that is, the difference between the current temperature and the start-up temperature is not less than the first preset threshold value, at this time, it is indicated that the temperature of the storage compartment has not dropped to the preset temperature before, and returning to step S804;

[0128] If yes, that is, the difference between the current temperature and the start-up temperature is less than the first preset threshold value, at this time, it is indicated that the temperature of the storage compartment has dropped to the preset temperature before, and executing step S806;

[0129] S806, restoring the working parameter of the compressor to the initial parameter before the door is opened.

[0130] After the compressor is controlled, the temperature of the storage compartment of the refrigerator is detected, when the temperature returns to the start-up temperature, that is, the normal working temperature of the refrigerator, at this time, it is indicated that the refrigerator has been normally worked at this time, and the initial control parameter of the refrigerator is restored, so as to avoid energy loss caused by continuous high-load operation of the refrigerator after articles are placed.

[0131] In another embodiment provided by the application, the controller is further configured to:

[0132] When the weight change information is an empty set, detecting a current temperature obtained by the temperature sensor when the door body changes from an open door state to a closed door state as a closed door temperature;

[0133] When the difference between the door-closing temperature and the start-up temperature is greater than a second preset threshold value, the rotation speed of the compressor is increased by a preset value from an initial rotation speed before the door is opened, and the compressor is controlled to operate at the increased rotation speed until the difference between the current temperature of the temperature sensor in real time and the start-up temperature is less than a third preset threshold value, and the rotation speed of the compressor is restored to the initial rotation speed.

[0134] In the implementation of the embodiment, refer to Figure 9 is a control flow diagram of the controller in the embodiment, and the controller performs the following steps:

[0135] S901, after the door body is switched from the door-closing state to the door-opening state, the door body state is detected;

[0136] S902, whether the door body is switched from the door-closing state to the door-opening state is judged;

[0137] If not, it is returned to step S901, indicating that the user is still taking and placing objects at this time, and the door body state is continuously detected;

[0138] If yes, it indicates that the user has finished taking and placing objects at this time, and step S903 is executed;

[0139] S903, whether the weight change information is empty is judged;

[0140] If yes, it indicates that the user has not taken and placed objects at this time, and step S904 is executed at this time;

[0141] If not, it indicates that the user has taken and placed the corresponding objects, the taking and placing object information of the user during this period is recognized, the required cold quantity is calculated according to the recognized taking and placing object information, and the working parameter of the compressor is controlled according to the calculated required cold quantity.

[0142] S904, the current temperature acquired by the temperature sensor at a time before the door is closed is acquired as the door-closing temperature;

[0143] S905, whether the difference between the door-closing temperature and the start-up temperature is greater than a second preset threshold value is judged;

[0144] If yes, it indicates that although the user has not taken and placed objects, the temperature in the refrigerator changes greatly before and after the door is opened by the user, and corresponding control is executed at this time, and step S906 is executed;

[0145] If not, it indicates that the user has not taken and placed any objects, and the temperature in the refrigerator has no obvious change at this time, and no treatment is made at this time;

[0146] S906, the rotation speed of the compressor is increased by a preset value from an initial rotation speed before the door is opened;

[0147] S907, the compressor is controlled to operate at the increased rotation speed.

[0148] S908, determining whether the difference between the current temperature of the temperature sensor in real time and the start-up temperature is less than a third preset threshold value;

[0149] If not, returning to step S907;

[0150] If yes, executing step S909;

[0151] S909, restoring the rotating speed of the compressor to the initial rotating speed.

[0152] It should be noted that the second preset threshold value and the third preset threshold value can be set to be the same or different, and the specific design value can be determined according to the actual situation.

[0153] When the user does not take or place any object in the refrigerator, the temperature in the refrigerator is determined whether a large change occurs, and the compressor is controlled to run, so as to realize the condition that the temperature of the refrigerator remains the original temperature.

[0154] In another embodiment provided by the application, the controller is further configured to:

[0155] When the weight change information is an empty set, the current temperature obtained by the temperature sensor when the door body is switched from the open door state to the closed door state is detected as the closed door temperature;

[0156] When the difference between the closed door temperature and the start-up temperature is greater than a second preset threshold value, the rotating speed of the compressor is increased by a preset value from the initial rotating speed before the door is opened, and the compressor is controlled to work at the increased rotating speed, until the difference between the current temperature of the temperature sensor in real time and the start-up temperature is less than a third preset threshold value, and the rotating speed of the compressor is restored to the initial rotating speed.

[0157] In another embodiment provided by the application, the object weight library specifically includes the weight information of the current stored object in the storage compartment;

[0158] The controller is further configured to:

[0159] When the weight change information contains a weight reduction value, when the difference between the weight reduction value and the product of a weight information in the object weight library and a proportion in the preset proportion library is in a first preset interval, it is determined that the object of the weight reduction value is a taken-out object, and the weight reduction value is the weight of the taken-out object.

[0160] When the weight change information includes a weight increase value, each weight increase value is compared with each weight decrease value in the weight change information; when the difference between a certain weight increase value and the product of any weight decrease value in the weight change information and any ratio in the preset ratio library is not in the first preset range, the item with the weight increase value is determined to be a newly placed item, and the weight increase value is the weight of the newly placed item.

[0161] In this specific implementation, the item weight database specifically includes the weight information of the items currently stored in the storage room, see [link to relevant documentation]. Figure 10 This is a schematic diagram of the control flow of the controller of the present invention in this embodiment; the control process includes the following steps:

[0162] S1001, Determine whether the weight change information includes a weight decrease value M. i ;

[0163] If so, proceed to step S1002;

[0164] S1002, compare each weight reduction value with each weight information in the item weight database, that is, compare the weight reduction value M. i The same as the weight information M in the item weight database M1 for each weight M j The relationship between them;

[0165] S1003, Determine if... ,and Make Established; among them, For elements in the preset proportion library N, The first preset range is defined as the range when a certain weight decreases by a certain amount. Subtract a certain weight information from the item weight database M1 Compared with a certain ratio in the preset ratio library N The difference obtained from the product is in the first preset interval Inside;

[0166] If so, proceed to step S1004;

[0167] S1004, determine that the item with the weight decrease is a newly placed item, and the weight increase is the weight of the newly placed item, i.e., determine the weight decrease value. The item being removed is the item whose weight is reduced by the weight of the removed item.

[0168] It should be noted that in this determination process, the weight reduction of the removed item is compared with the product of a certain weight information in the item weight database and a certain ratio in the preset ratio database, which can accurately identify and take the item; by setting the preset ratio database, it can accurately identify the partial taking of the object; by setting the first preset interval, it can eliminate the error of the weight sensor and the error of the object when taking it.

[0169] The preset ratio library N contains specific ratio elements such as 1, 1 / 2, 1 / 3, 1 / 4, and 1 / 6, representing the standard portions of items. When the selected ratio element in the preset ratio library is 1, it indicates that the entire item in the storage room is taken. When the ratio element is another element, such as 1 / 2, it indicates that a portion of the item in the storage room is taken. For example, if six bottles of beverages are stored in the storage room at once, the item weight library only contains the total weight of the six bottles, which is 2040g. If a user takes one bottle, the weight decreases by 339g. In this case, comparing the total weight alone cannot identify the taking action. However, by using the set ratio library and the first preset interval, the taking of a single bottle of beverage can be accurately identified.

[0170] See Figure 11 This is a schematic diagram of the control flow of the controller of the present invention in this embodiment; the control process includes the following steps:

[0171] S1101, Determine whether the weight change information includes a weight increase value M. j ;

[0172] If so, proceed to step S1102;

[0173] S1102, compare each weight increase value with each weight decrease value in the weight change information, that is, compare the weight increase value M. i The same as the weight change information M2, each weight reduction M k The relationship between them;

[0174] S1103, Determine if ,and All of these make Not valid; among them, For elements in the preset proportion library N, The first preset interval is defined as the interval when a certain weight increases by a certain value. Any weight reduction M in weight loss change information M2 k Compared with any ratio in the preset ratio library N The differences obtained from the products are all outside the first preset interval. ;

[0175] If so, proceed to step S1104;

[0176] S1104, the weight increase value of the object is determined as the weight of the newly placed object, that is, the weight increase value is determined as the weight of the newly placed object of the object is determined as the weight of the newly placed object, that is, the weight increase value is determined as the weight of the newly placed object

[0177] It should be noted that in this determination process, the weight decrease value of the taken object is compared with the product of any weight information in the object weight library and any proportion in the preset proportion library, which can accurately identify whether the taken object is the object placed this time; through the setting of the preset proportion library, the partial taking of the object can be accurately identified; through the first preset interval setting, the errors of the weight sensor and the object during taking can be excluded.

[0178] The specific proportion elements in the preset proportion library N include 1, 1 / 2, 1 / 3, 1 / 4, 1 / 6, etc. When the selected proportion element of the preset proportion library is 1, it means that the object in the storage chamber is taken in its entirety, and when the proportion element is other elements, for example, 1 / 2, it means that the object in the storage chamber is taken partially. For example, 6 bottles of beverages are taken from the storage chamber at a time, and at this time, the weight change information only includes the weight of the 6 bottles of beverages as a whole, that is, 2040g, and at this time, the user puts back one of the bottles, and the weight increase value is 339g. At this time, only the whole weight comparison cannot identify the taking and putting back behavior, and it is easy to identify it as a newly placed object. Through the setting of the proportion library and the first preset interval, the taking and putting back of a single bottle of beverage can be accurately identified.

[0179] It should be noted that the more the number of the preset proportion library is set, the more accurate the partial taking can be identified, but the more the setting is, the more likely it is to cause misidentification, therefore, in specific implementation, the first preset interval range can be set to be larger, and the proportion elements in the preset proportion library can be set to be the proportion between common single objects and assembled objects, for example, common canned beverages generally adopt 6 bottles to form a piece, so as to improve the identification accuracy and avoid misidentification.

[0180] In another embodiment provided by the application, the weight change information further includes the occurrence time of each weight change;

[0181] The controller is further configured to:

[0182] When the weight change information includes the weight increase value and the weight decrease value, and the difference obtained by subtracting the product of any weight information in the object weight library and any proportion in the proportion library from any weight decrease value is not in the first preset interval, and the difference obtained by subtracting the product of the weight of any newly placed object before the weight decrease value and any proportion in the proportion library from the weight decrease value is in the first preset interval, it is determined that the object corresponding to the weight decrease value is a previously placed and taken object, and the weight decrease value is the weight of the previously placed and taken object.

[0183] When the weight change information contains weight increase values and weight decrease values, and the difference between a certain weight increase value and the product of the weight of any taken-out article occurring before the weight increase value in the weight change information and any proportion in the proportion library is in the first preset interval, it is determined that the article of the weight increase value is a taken-again-placed article, and the weight decrease value is the weight of the taken-again-placed article.

[0184] In the implementation of the embodiment, refer to Figure 12 is the control flowchart of the controller in the embodiment; when the controller is controlled, the following steps are performed:

[0185] S1201, it is judged whether the weight change information contains weight increase values and weight decrease values at the same time;

[0186] If yes, steps S1202 and S1206 are performed at the same time;

[0187] S1202, it is judged whether , and all make not true; wherein, is an element in the preset proportion library N, is the first preset interval, that is, when a certain weight decrease value is not in the first preset interval when the difference between the weight of any new-placed article occurring before the weight decrease value in the article weight library M1 and any proportion in the preset proportion library N ;

[0188] If yes, step S1203 is performed;

[0189] S1203, it is judged whether , and make true; wherein, is an element in the preset proportion library N, is the first preset interval, M3 is a set composed of the weights of new-placed articles occurring before the weight decrease value , and is the weight of a certain new-placed article occurring before the weight decrease value , that is, when a certain weight decrease value is in the first preset interval when the difference between the weight of any new-placed article occurring before the weight decrease value in the article weight library M1 and any proportion in the preset proportion library N ;

[0190] If so, proceed to step S1205;

[0191] S1205, determine that the item whose weight decreases is an item that was placed and then taken out first, and the weight decrease is the weight of the item that was placed and then taken out first.

[0192] S1206, Determine if ,and Make Established; among them, For elements in the preset proportion library N, M4 represents the first preset interval, where M4 is the time of occurrence relative to the weight increase. The collection of items taken out previously, The time of occurrence is the value of weight increase. The weight of a newly placed item previously, i.e., when the weight increases by a certain value. The weight loss change information is the weight of a removed item that occurred before the weight increase value, compared to any ratio in the preset ratio library N. The difference obtained from the product is in the first preset interval Inside;

[0193] If so, proceed to step S1207;

[0194] S1207, determine that the item whose weight increases is the item that was taken out and then put back, and determine that the item whose weight decreases is the weight of the item that was taken out and then put back.

[0195] It should be noted that in this determination process, the weight reduction of the removed item is compared with the product of a certain weight information in the item weight database and any ratio in the preset ratio database, which can accurately identify and take the item; by setting the preset ratio database, it can accurately identify the partial taking of the object; by setting the first preset interval, it can eliminate the error of the weight sensor and the error of the object when taking it.

[0196] By comparing the weight reduction value with the product of the weight of a newly placed item that occurred before the weight reduction value in the weight change information and a certain proportion in the proportion library, it is possible to identify objects that were placed and then taken, and to identify partial taking.

[0197] By comparing the weight increase value with the product ratio of the weight of a taken-out item that occurred before the weight increase value in the weight change information and a certain ratio in the ratio library, it is possible to identify objects that were taken out and then put back, and to identify partial taking.

[0198] When the weight change information includes both weight increase and weight decrease values, the system can identify objects that were placed and then removed before the time of occurrence by analyzing newly placed and removed objects before the time of occurrence. This improves the accuracy of object type identification, enhances the precision of cooling capacity calculation, and improves the precision of refrigeration control.

[0199] In another embodiment provided by the present invention, the required cooling capacity is specifically as follows:

[0200] ;

[0201] in, For items i The weight, c represents the temperature difference of the newly placed object; c represents the fixed thermal properties of the object. q Let i ∈ [the set of all newly placed items in the item placement information]. q , For items j The weight, p The set of all items that were placed and then taken in the item placement and retrieval information. j ∈ p， For items k The weight, g This refers to the set of all items retrieved and then placed in the aforementioned item retrieval and placement information. k ∈ g , For items n The weight, h The set of all retrieved items in the retrieved / placed item information. n ∈ h， This is the preset equivalent temperature difference.

[0202] In the specific implementation of this embodiment, based on the analyzed information of newly placed items, removed items, items removed first and then placed, and items placed first and then removed, the impact of each item on the change of cooling capacity inside the refrigerator is calculated.

[0203] The newly placed items are items at room temperature placed in the refrigerator. There is a temperature difference between the newly placed items and the temperature inside the refrigerator. , , Given the current ambient temperature, Given the current operating temperature of the storage compartment, the refrigerator needs to cool it down to the set temperature, requiring a cooling capacity of [missing value]. ,in For items i The weight, q Let i ∈ [the set of all newly placed items in the item placement information]. q，That is, summing up the cooling capacity of all newly placed items to obtain the cooling capacity Q1 of the refrigerator for the newly placed items. .

[0204] When items are placed in and then removed from the refrigerator at room temperature, this latter part of the refrigerator does not require cooling. Therefore, the cooling capacity calculated for the newly placed items needs to be subtracted from the cooling capacity calculated when the items were first placed in. The required subtraction is: Where c represents the fixed thermal property of the item. For items j The weight, p The set of all items that were placed and then taken in the item placement and retrieval information. j ∈ p， That is, summing the cooling capacity of all items that were placed and then removed first, we can obtain the cooling capacity Q2 of the refrigerator for newly placed items. .

[0205] Removing items specifically refers to taking items from the refrigerator at their original temperature. The refrigerator doesn't need to cool them down further afterward, even though the removed items are at the same temperature. However, the refrigerator still consumes cooling energy to preserve the items. This illustrates that the cooling energy required by the refrigerator differs between an empty and a fully loaded state. Therefore, we need to subtract the cooling energy originally used for preserving these items and represent this as the equivalent temperature difference the refrigerator uses to maintain the item's temperature. , The required cooling capacity for removing all items can be set according to the refrigerator's operating status. ,in For items n The weight, h The set of all retrieved items in the retrieved / placed item information. ，n ∈ h， That is, summing up the cooling amount of all removed items to obtain the change in cooling amount Q3 of the refrigerator for each removed item. .

[0206] When items are taken out of the refrigerator and then put back in, the refrigerator still needs to cool these items. Therefore, the cooling capacity calculated for these items needs to be subtracted from the cooling capacity calculated when they were taken out. The required subtraction is - ,in For items j The weight, p The set of all items that were placed and then taken in the item placement and retrieval information. k ∈g ， That is, summing the cooling capacity of all items that were placed and then removed to obtain the cooling capacity Q4 of the refrigerator for newly placed items. .

[0207] It should be noted that the calculation in the above calculation considers the calculation in the case that the new placed article, the taken article, the first taken and then placed article and the first placed and then taken article all exist in the article taking and placing information, in other embodiments, the four articles may not exist at the same time, when they do not exist, only the cold quantity change of the existing article is calculated.

[0208] For example: only the new placed article and the taken article exist, only the cold quantity change of the new placed article and the taken article is calculated. , the required cold quantity can be calculated.

[0209] For example: only the new placed article and the first taken and then placed article exist .

[0210] The calculation in the case that the new placed article, the taken article, the first taken and then placed article and the first placed and then taken article all exist in the article taking and placing information can be more in line with the article taking and placing requirements in the daily use scene, considers the diversified operation of the user when taking and placing the article, and improves the cold quantity calculation accuracy.

[0211] In another embodiment provided by the application, the controller is further configured to:

[0212] When the taken article is included in the article taking and placing information, the weight information of the taken article each time is deleted from the article weight database, and the article weight database is updated;

[0213] When the new placed article is included in the article taking and placing information, the weight information of the new placed article each time is added to the article weight database, and the article weight database is updated;

[0214] When the first placed and then taken article is included in the article taking and placing information, the weight information of the first placed and then taken article each time is deleted from the article weight database, and the article weight database is updated;

[0215] When the first taken and then placed article is included in the article taking and placing information, the weight information of the first taken and then placed article each time is added to the article weight database, and the article weight database is updated.

[0216] In the specific implementation of the embodiment, the calculation of the cold quantity considers the case that the new placed article, the taken article, the first taken and then placed article and the first placed and then taken article all exist in the article taking and placing information, but in the specific implementation, the four articles may not exist at the same time, when they do not exist, only the cold quantity change of the existing article is calculated, and the article weight database is updated according to the corresponding article.

[0217] When the taking and placing information contains the taken-out goods, the weight information corresponding to the taken-out goods in the goods weight database is deleted, and the weight information corresponding to each taken-out good in the goods weight database is deleted. It should be noted that the weight of the taken-out goods may not be the same as the weight originally in the goods weight database, as the corresponding sensor error is considered, and there may be partial taking. The corresponding deleted weight information is specifically that when the taken-out goods are identified, the weight information matched in the goods weight database is deleted, the weight information can be partially eliminated, the weight of the partial taking is reduced, and the goods weight database is updated.

[0218] When the taking and placing information contains the newly placed goods, the weight information of each newly placed goods is added in the goods weight database, and the corresponding weight information is added in the goods weight database for each newly placed goods. The goods weight database is updated.

[0219] When the taking and placing information contains the first placed and taken goods, the weight information of each first placed and taken goods is deleted in the goods weight database. After the newly placed goods are added, when the goods are taken out again, the weight of the taken-out goods is deleted. The update of the weight information of the first placed and taken goods should be after the goods are placed. It should be noted that the weight of the first placed and taken goods may not be the same as the weight originally in the goods weight database after the newly placed goods are updated, as the corresponding sensor error is considered, and there may be partial taking. The corresponding deleted weight information is specifically that when the first placed and taken goods are identified, the weight information matched in the goods weight database is deleted, the weight information can be partially eliminated, the weight of the partial taking is reduced, and the goods weight database is updated.

[0220] When the taking and placing information contains the first taken and placed goods, the weight information of each first taken and placed goods is added in the goods weight database. After the taken-out goods are added, when the taken-out goods are placed, the weight of the placed goods is added. The update of the weight information of the first taken and placed goods should be after the taken-out goods are updated. It should be noted that the weight of the first placed and taken goods may not be the same as the weight originally in the goods weight database after the taken-out goods are updated, as the corresponding sensor error is considered, and there may be partial placing. The corresponding deleted weight information is specifically that when the first taken and placed goods are identified, the weight information matched in the goods weight database is added, the weight information can be partially added, the weight of the partial placing is added, and the goods weight database is updated.

[0221] According to the taking and placing information, the goods weight database is updated, the goods weight database and the goods in the refrigerator are synchronized, long-term monitoring is facilitated, and cold energy calculation is performed.

[0222] It should be noted that this process of detecting the objects in the refrigerator by weight is different from the scheme of managing objects by tags in the prior art. The tag scheme in the prior art is more applied to monitoring the freshness of food and monitoring specific different object type information, and most of them need the cumbersome process of manually adding tags, and it is difficult to realize autonomous monitoring. And when calculating the cold quantity, the type of the object does not need to be considered, so the weight identification scheme meets the accuracy requirement of the cold quantity calculation of the present application, and can realize object weight management without manually adding tags, which is more efficient.

[0223] In another embodiment provided by the present application, the controller is further configured to:

[0224] After obtaining the weight change of the storage compartment each time, the weight change value each time is counted, and the weight change value lower than the fourth preset threshold is screened out.

[0225] The screened weight change value is taken as the weight change information; the weight change information is an empty set, or includes an increased weight value and / or a decreased weight value.

[0226] In the specific implementation of the present embodiment, after obtaining the weight of the storage compartment, the weight change value each time is counted, and the weight change lower than 50g is filtered out, that is, the shaking error caused by the user manually taking the object is avoided.

[0227] It should be noted that the fourth preset threshold can be set according to actual conditions.

[0228] The screened weight change value is taken as the weight change information; the weight change information is an empty set, or includes an increased weight value and / or a decreased weight value.

[0229] By screening the weight change value, the error is reduced and the weight identification accuracy is improved.

[0230] Another embodiment of the present application provides a refrigeration control method of a refrigerator, and the method comprises the following steps:

[0231] When it is detected that the door body of the refrigerator changes from a closed state to an open state, a weight sensor arranged in a storage compartment of the refrigerator detects the weight change in the storage compartment each time during the period when the door body changes from the open state to the closed state, and obtains weight change information;

[0232] When the weight change information is not an empty set, the taking and placing object information of the user during this period is identified according to the obtained weight change information and a preset object weight library, and the taking and placing object information includes weight information of taken objects and / or weight information of newly placed objects.

[0233] The demand cold quantity is calculated according to the identified taking and placing article information, and the working parameter of the compressor of the refrigerator is controlled according to the calculated demand cold quantity.

[0234] It should be noted that the refrigeration control method of the refrigerator provided by the embodiment of the present application is the same as all the process steps performed by the controller of the refrigerator of the above-mentioned embodiment, see Figure 4 , the working principles and beneficial effects of the two are one-to-one correspondence, and the specific working flow chart is seen in Figures 7-12 , and thus will not be described again.

[0235] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiments of the method. Among them, the storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM) and the like.

[0236] The above is the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements are also considered to be within the scope of protection of the present application.

Claims

1. A refrigerator characterized by comprising: The application relates to a refrigerator, which comprises a cabinet, a door body arranged at an opening of the cabinet, a storage chamber arranged in the cabinet and used for storing articles, a weight sensor arranged in the storage chamber and used for collecting the weight of the articles stored in the storage chamber, a compressor arranged in the cabinet and used for realizing circulation of refrigerant, and a controller. The controller is used for: when detecting that the door body changes from a closed state to an open state, detecting, by the weight sensor, the weight change in the storage chamber each time during the period when the door body changes from the open state to the closed state, and obtaining weight change information; when the weight change information is not an empty set, identifying, according to the obtained weight change information and a preset article weight library, the taking and placing article information of a user during the period, wherein the taking and placing article information comprises weight information of taken articles and / or weight information of newly placed articles; and calculating required cooling capacity according to the identified taking and placing article information, and controlling the working parameters of the compressor according to the calculated required cooling capacity. The controller is further used for: matching a corresponding control rotating speed in a preset rotating speed matching database according to the calculated required cooling capacity, wherein the rotating speed matching database comprises a corresponding relationship between each required cooling capacity and control rotating speed; and controlling the compressor to work at the control rotating speed. The application further discloses a refrigerator, which comprises a temperature sensor arranged in the storage chamber and used for collecting the current temperature of the storage chamber. The controller is further used for: when detecting that the door body changes from the closed state to the open state, obtaining the current temperature detected by the temperature sensor at a previous time as a starting temperature; and after controlling the working parameters of the compressor according to the calculated required cooling capacity, when the difference between the real-time current temperature of the temperature sensor and the starting temperature is less than a first preset threshold value, restoring the working parameters of the compressor to initial parameters before the door is opened. The controller is further used for: when the weight change information is an empty set, detecting the current temperature obtained by the temperature sensor when the door body changes from the open state to the closed state as a closing temperature; and when the difference between the closing temperature and the starting temperature is greater than a second preset threshold value, increasing the rotating speed of the compressor by a preset value from the initial rotating speed before the door is opened, controlling the compressor to work at the increased rotating speed, and when the difference between the real-time current temperature of the temperature sensor and the starting temperature is less than a third preset threshold value, restoring the rotating speed of the compressor to the initial rotating speed. The article weight library specifically comprises weight information of the current storage articles in the storage chamber. The controller is further used for: when the weight change information comprises weight reduction values, when the difference between a weight reduction value and the product of a weight information in the article weight library and a proportion in a preset proportion library is in a first preset interval, determining that the article corresponding to the weight reduction value is a taken article, and the weight reduction value is the weight of the taken article. ​ ​ 2. The refrigerator according to claim 1, wherein, ​ ​ ​ 3. The refrigerator according to claim 1, wherein ​ ​ ​ ​ ​ 4. The refrigerator according to claim 3, wherein ​ ​ ​ 5. The refrigerator according to claim 1, wherein ​ ​ ​ When the weight change information contains weight increase values, each weight increase value is compared with each weight decrease value in the weight change information respectively; when the difference between a weight increase value and the product of any weight decrease value in the weight change information and any proportion in the preset proportion library is not in the first preset interval, it is determined that the article corresponding to the weight increase value is a newly placed article, and the weight increase value is the weight of the newly placed article.

6. The refrigerator according to claim 5, wherein The weight change information further contains the time of each weight change; The controller is further configured to: When the weight change information contains weight increase values and weight decrease values, and the difference between a weight decrease value and the product of any weight information in the article weight library and any proportion in the proportion library is not in the first preset interval, and the difference between the weight decrease value and the product of the weight of a newly placed article before the weight decrease value and any proportion in the proportion library is in the first preset interval, it is determined that the article corresponding to the weight decrease value is a placed and taken article, and the weight decrease value is the weight of the placed and taken article. When the weight change information contains weight increase values and weight decrease values, and the difference between a weight increase value and the product of the weight of a taken-out article before the weight increase value and any proportion in the proportion library is in the first preset interval, it is determined that the article corresponding to the weight increase value is a taken and placed article, and the weight decrease value is the weight of the taken and placed article.

7. The refrigerator according to claim 6, wherein The required cold quantity is specifically: ； wherein, is the weight of the article, i is the temperature difference of the newly placed article; c is the fixed thermal property of the article, q is the set of all newly placed articles in the pick-and-place article information, i∈ q , is the weight of the article, j p is the set of all placed-and-picked articles in the pick-and-place article information, j ∈ p， is the weight of the article, k g is the set of all picked-and-placed articles in the pick-and-place article information, k ∈ g , is the weight of the article, n h is the set of all picked articles in the pick-and-place article information, n ∈ h， is the preset equivalent temperature difference.​​​​ 8. The refrigerator according to claim 1, wherein The controller is further configured to: When the taking and placing article information contains taken-out articles, the weight information of each taken-out article is deleted from the article weight library, and the article weight library is updated; When the taking and placing article information contains newly placed articles, the weight information of each newly placed article is added to the article weight library, and the article weight library is updated; When the taking and placing article information contains placed and taken articles, the weight information of each placed and taken article is deleted from the article weight library, and the article weight library is updated; When the taking and placing article information contains taken and placed articles, the weight information of each taken and placed article is added to the article weight library, and the article weight library is updated.

9. The refrigerator according to claim 1, wherein The controller is further configured to: After obtaining the weight change of the storage compartment each time, the weight change value each time is counted, and the weight change value lower than the fourth preset threshold is screened out; The screened-out weight change value is used as the weight change information; the weight change information is an empty set, or contains weight increase values and / or weight decrease values.

10. A method of controlling refrigeration of a refrigerator, characterized by, The method comprises: When it is detected that the door body of the refrigerator changes from a closed state to an open state, the weight sensor arranged in the storage compartment of the refrigerator detects the weight change in the storage compartment each time when the door body changes from the open state to the closed state, and obtains weight change information; When the weight change information is not an empty set, the taking and placing article information of the user during this period is identified according to the obtained weight change information and the preset article weight library; the taking and placing article information contains weight information of taken-out articles and / or weight information of newly placed articles. According to the identified information of the taken and placed article, the required cold quantity is calculated, and the working parameter of the compressor of the refrigerator is controlled according to the calculated required cold quantity.

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