Refrigerator and electric air door control method of refrigerator

Abstract

The invention discloses a refrigerator and an electric air door control method of the refrigerator. A first chamber and a second chamber are arranged in the refrigerator. The electric air door is arranged at the intersection of the air ducts of the first chamber and the second chamber and is used for controlling the opening or closing of the air ducts of the first chamber and the second chamber; the refrigerating system is used for achieving the refrigerating function of the refrigerator. The refrigerating requirements of a first chamber and a second chamber are obtained; according to the refrigeration requirement, the operation state of the refrigeration system and the opening and closing state of the electric air door are controlled; the on-off state comprises a full-on state and a full-off state; in the full-open state, the air duct of the first chamber is completely communicated, and the air duct of the second chamber is completely closed; and in the fully-closed state, the air duct of the first chamber is completely closed, and the air duct of the second chamber is completely communicated. By the adoption of the refrigerator, double-temperature-zone control is achieved through the single air door, and the plot ratio of the refrigerator is effectively increased.

Description

Technical Field

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

[0002] With the progress of science and the development of social economy, people's living standards are getting higher and higher, and refrigerators have almost become one of the household appliances necessary for every family. There are many requirements for multi-temperature zones in refrigerators. A high volume ratio is the general trend, and the requirements for multi-temperature zones will be accompanied by complex structures and multi-air damper controls.

[0003] Currently, most products control each temperature zone separately, that is, the air damper states of each temperature zone are controlled separately. Then, multiple control units are required to complete the control of multiple temperature zones, which easily causes a complex and large structure, occupies too much space in the refrigerator, and results in a low volume ratio of the refrigerator. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a refrigerator and an electric air damper control method for a refrigerator, which can realize dual-temperature zone control through a single air damper, effectively improving the volume ratio of the refrigerator.

[0005] To achieve the above purpose, the embodiments of the present invention provide a refrigerator, including:

[0006] A cabinet with a first compartment and a second compartment inside;

[0007] An electric air damper disposed at the intersection of the air ducts of the first compartment and the second compartment, for controlling the conduction or closing of the air ducts of the first compartment and the second compartment;

[0008] A refrigeration system for realizing the refrigeration function of the refrigerator, the refrigeration system including a compressor;

[0009] A controller for:

[0010] Obtaining the refrigeration requirements of the first compartment and the second compartment;

[0011] According to the refrigeration requirements, controlling the operating state of the refrigeration system and the switching state of the electric air damper; wherein, the switching state includes a fully open state and a fully closed state; in the fully open state, the air duct of the first compartment is completely conducted, and the air duct of the second compartment is completely closed; in the fully closed state, the air duct of the first compartment is completely closed, and the air duct of the second compartment is completely conducted.

[0012] As an improvement to the above solution, the refrigerator further includes a first temperature sensor and a second temperature sensor; the first temperature sensor is used to collect the compartment temperature of the first compartment, denoted as the first compartment temperature; the second temperature sensor is used to collect the compartment temperature of the second compartment, denoted as the second compartment temperature;

[0013] The obtaining of the refrigeration demands of the first compartment and the second compartment includes:

[0014] When the first compartment temperature is greater than a preset first startup temperature, it is determined that the first compartment has a refrigeration demand;

[0015] When the first compartment temperature is less than or equal to a preset first shutdown temperature, it is determined that the first compartment has no refrigeration demand; the first startup temperature is greater than the first shutdown temperature;

[0016] When the second compartment temperature is greater than a preset second startup temperature, it is determined that the second compartment has a refrigeration demand;

[0017] When the second compartment temperature is less than or equal to a preset second shutdown temperature, it is determined that the second compartment has no refrigeration demand; the second startup temperature is greater than the second shutdown temperature.

[0018] As an improvement to the above solution, the controlling of the operating state of the refrigeration system and the switching state of the electric air damper according to the refrigeration demands includes:

[0019] When the first compartment has a refrigeration demand and the second compartment has no refrigeration demand, control the compressor to start running, and the electric air damper is in the fully open state;

[0020] When the second compartment has a refrigeration demand and the first compartment has no refrigeration demand, control the compressor to start running, and the electric air damper is in the fully closed state;

[0021] When neither the first compartment nor the second compartment has a refrigeration demand, control the compressor to stop running, and control the electric air damper to be in the fully closed state or the fully open state.

[0022] As an improvement to the above solution, the switching state further includes an intermediate state between the fully open state and the fully closed state. In this intermediate state, there is a certain opening degree of conduction in the air ducts of both the first compartment and the second compartment;

[0023] Then the controlling of the operating state of the refrigeration system and the switching state of the electric air damper according to the refrigeration demands includes:

[0024] When there is a refrigeration demand in both the first chamber and the second chamber, control the compressor to start running and control the electric air damper to be in the middle state.

[0025] As an improvement to the above solution, when there is a refrigeration demand in both the first chamber and the second chamber, controlling the compressor to start running and controlling the electric air damper to be in the middle state includes:

[0026] When there is a refrigeration demand in both the first chamber and the second chamber, control the compressor to start running, and according to the temperature of the first chamber and the temperature of the second chamber, control the electric air damper to be in the middle state and its opening angle.

[0027] As an improvement to the above solution, when there is a refrigeration demand in both the first chamber and the second chamber, controlling the compressor to start running and according to the temperature of the first chamber and the temperature of the second chamber, controlling the electric air damper to be in the middle state and its opening angle includes:

[0028] When there is a refrigeration demand in both the first chamber and the second chamber, control the compressor to start running;

[0029] According to the temperature of the first chamber and the temperature of the second chamber, compare the magnitudes of the refrigeration demands of the first chamber and the second chamber;

[0030] When the refrigeration demand of the first chamber temperature is less than the refrigeration demand of the second chamber temperature, control the electric air damper to be in the middle state and the opening angle to be the first angle;

[0031] When the refrigeration demand of the first chamber temperature is equal to the refrigeration demand of the second chamber temperature, control the electric air damper to be in the middle state and the opening angle to be the second angle;

[0032] When the refrigeration demand of the first chamber temperature is greater than the refrigeration demand of the second chamber temperature, control the electric air damper to be in the middle state and the opening angle to be the third angle;

[0033] Among them, the third angle is greater than the second angle, the second angle is greater than the first angle, and the larger the opening angle, the greater the opening degree of the air duct of the first chamber.

[0034] As an improvement to the above solution, specifically controlling the electric air damper to be in the middle state and its opening angle according to the temperature of the first chamber and the temperature of the second chamber includes:

[0035] When the temperature of the first chamber is greater than the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second chamber is greater than the sum of the second shutdown temperature and the third correction temperature; or,

[0036] When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the second correction temperature, and less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the sum of the second shutdown temperature and the fourth correction temperature, and less than or equal to the sum of the second shutdown temperature and the third correction temperature; or,

[0037] When the temperature of the first compartment is greater than the first shutdown temperature and less than or equal to the sum of the first shutdown temperature and the second correction temperature, and the temperature of the second compartment is greater than the second shutdown temperature and less than or equal to the sum of the second shutdown temperature and the fourth correction temperature, control the electric air damper to be in the middle state and the opening angle to be the second angle;

[0038] When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the second shutdown temperature and less than or equal to the sum of the second shutdown temperature and the third correction temperature; or,

[0039] When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the second correction temperature, and less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the second shutdown temperature and less than or equal to the sum of the second shutdown temperature and the fourth correction temperature, control the electric air damper to be in the middle state and the opening angle to be the third angle;

[0040] When the temperature of the first compartment is greater than the first shutdown temperature and less than or equal to the sum of the first shutdown temperature and the second correction temperature, and the temperature of the second compartment is greater than the sum of the second shutdown temperature and the fourth correction temperature; or,

[0041] When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the second correction temperature, and less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the sum of the second shutdown temperature and the third correction temperature, control the electric air damper to be in the middle state and the opening angle to be the first angle;

[0042] Wherein, the first correction temperature is greater than the second correction temperature, the third correction temperature is greater than the fourth correction temperature, the third angle is greater than the second angle, and the second angle is greater than the first angle.

[0043] As an improvement to the above solution, the refrigerator further includes a third temperature sensor for collecting the ambient temperature; the refrigeration system further includes a fan;

[0044] Controlling the operating state of the refrigeration system according to the refrigeration demand further includes:

[0045] When there is a refrigeration demand in the first compartment and / or the second compartment, control the fan to start running;

[0046] Control the rotation speed of the blower according to the ambient temperature; wherein, there is a positive correlation between the ambient temperature and the rotation speed of the blower.

[0047] As an improvement to the above solution, the refrigeration system includes an evaporator; the refrigerator further includes a fourth temperature sensor for collecting the evaporator temperature;

[0048] The controller is further configured to:

[0049] When the evaporator temperature is less than or equal to a preset evaporator temperature threshold, or when there is no refrigeration demand in both the first compartment and the second compartment, control the compressor to turn off, the blower to start running, and the electric air damper to be in the fully open state, and enter the defrost mode.

[0050] An embodiment of the present invention further provides an electric air damper control method for a refrigerator, where the refrigerator includes:

[0051] A box body with a first compartment and a second compartment provided inside;

[0052] An electric air damper is provided at the intersection of the air ducts of the first compartment and the second compartment for controlling the conduction or closing of the air ducts of the first compartment and the second compartment;

[0053] A refrigeration system for realizing the refrigeration function of the refrigerator, and the refrigeration system includes a compressor;

[0054] The method includes:

[0055] Obtain the refrigeration demands of the first compartment and the second compartment;

[0056] According to the refrigeration demands, control the operating state of the refrigeration system and the switch state of the electric air damper; wherein, the switch state includes a fully open state and a fully closed state; in the fully open state, the air duct of the first compartment is completely conducted, and the air duct of the second compartment is completely closed; in the fully closed state, the air duct of the first compartment is completely closed, and the air duct of the second compartment is completely conducted.

[0057] Compared with the prior art, the refrigerator and the electric air damper control method of the refrigerator disclosed in the present invention, by improving the air duct structure of the refrigerator, only use one electric air damper to achieve precise temperature control of the dual-temperature zone, effectively saving the component cost of the refrigerator, reducing the use cost of the refrigerator, and making the refrigerator structure more compact, reducing the occupation of the effective use space of the refrigerator, improving the volume ratio of the refrigerator, and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 is a schematic structural diagram of a refrigerator provided by an embodiment of the present invention;

[0059] Figure 2 is a schematic structural diagram of the refrigeration system in an embodiment of the present invention;

[0060] Figure 3 is a first schematic diagram of the air duct structure of the refrigerator in an embodiment of the present invention;

[0061] Figure 4 is a first schematic diagram of the working process of the controller in an embodiment of the present invention;

[0062] Figure 5 is a second schematic diagram of the air duct structure of the refrigerator in an embodiment of the present invention;

[0063] Figure 6 is a third schematic diagram of the air duct structure of the refrigerator in an embodiment of the present invention;

[0064] Figure 7 is a fourth schematic diagram of the air duct structure of the refrigerator in an embodiment of the present invention;

[0065] Figure 8 is a schematic diagram of the relationship between various temperature parameters in an embodiment of the present invention;

[0066] Figure 9 is a second schematic diagram of the working process of the controller in an embodiment of the present invention;

[0067] Figure 10 is a third schematic diagram of the working process of the controller in an embodiment of the present invention. Detailed implementation manners

[0068] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0069] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0070] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0071] In the description of this application, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] See Figure 1 , which is a schematic structural diagram of a refrigerator provided by an embodiment of the present invention. An embodiment of the present invention provides a refrigerator 10, including a box body 11, and at least one storage compartment 12 is provided inside the box body 11 for storing items.

[0073] The refrigerator 10 of this embodiment has an approximately cuboid shape. The refrigerator includes a box body 11 that defines a storage space and a plurality of door bodies provided at the opening of the box body. Among them, the door body includes a door body outer shell located outside the box body, a door body inner liner located inside the box body, an upper end cover, a lower end cover, and a heat insulation layer located between the door body outer shell, the door body inner liner, the upper end cover, and the lower end cover; generally, the heat insulation layer is filled with foaming material. The box body is provided with a chamber, and the chamber includes a component storage chamber for placing components in the refrigerator, such as a compressor compartment, etc., and also includes a storage space for storing items such as food and medicine.

[0074] The storage space can be partitioned into a plurality of storage compartments 12. In the embodiment of the present invention, it includes at least two storage compartments, namely a first compartment 121 and a second compartment 122. According to different uses, the storage compartment 12 can be configured as a refrigerating chamber and a freezing chamber, and can also include a variable temperature chamber, a vacuum drawer, a humidity-preserving drawer, etc. Each storage compartment 12 corresponds to one or more door bodies. For example, the storage compartment at the upper part of the refrigerator is provided with double door bodies. Among them, the door body can be pivotally provided at the opening of the box body, or can be a drawer-type opening to achieve drawer-type storage. A display screen is provided at the door of the refrigerator, and the display screen is used to display prompt information and receive the touch operation of the user.

[0075] Preferably, the first compartment is a refrigerating chamber, and the second compartment is a variable temperature chamber.

[0076] A refrigeration system 13 is also provided inside the box body 11. SeeFigure 2 , which is a schematic structural diagram of the refrigeration system in an embodiment of the present invention. The refrigerator performs a refrigeration operation through the refrigeration system, providing cold energy transmission into the storage compartment to maintain the storage compartment at a constant low temperature state. The refrigeration system 13 includes a compressor 131, an evaporator 132, a dryer filter (not shown in the figure), a throttling component 133, a condenser 134, 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. Among them, the compression process is as follows: Plug in the power cord of the refrigerator. When there is a refrigeration requirement in the cabinet, the compressor 131 starts to work. The low-temperature and low-pressure refrigerant is sucked into the compressor 131 and compressed into a high-temperature and high-pressure superheated gas in the cylinder of the compressor 131 and then discharged into the condenser 134; the condensation process is as follows: The high-temperature and high-pressure refrigerant gas dissipates heat through the condenser 134, and the temperature continuously drops, gradually being cooled into a normal-temperature and high-pressure saturated vapor, and further cooled into a saturated liquid, and the temperature no longer drops. At this time, the temperature is called the condensation temperature, and the pressure of the refrigerant is almost unchanged during the entire condensation process; the throttling process is as follows: The condensed refrigerant saturated liquid flows into the throttling component 133 after being filtered by the dryer filter to remove moisture and impurities, and throttles and reduces the pressure through it, and the refrigerant becomes a normal-temperature and low-pressure wet vapor; the evaporation process is as follows: The normal-temperature and low-pressure wet vapor starts to absorb heat and vaporize in the evaporator 132, not only reducing the temperature of the evaporator 132 and its surroundings, but also turning the refrigerant into a low-temperature and low-pressure gas. The refrigerant coming out of the evaporator 132 returns to the compressor 131 again after passing through the gas-liquid separator. Repeating the above process, the heat inside the refrigerator is transferred to the air outside the box, achieving the purpose of refrigeration.

[0077] As Figure 1 and Figure 2 shown, the refrigeration system 13 further includes a fan 135 for promoting the circulation of cold air to ensure uniform temperature distribution inside the refrigerator. An electric air damper 141 is further provided inside the cabinet 11. The electric air damper 141 is provided in the air duct structure 14, specifically at the intersection of the air ducts of the first compartment 121 and the second compartment 122, for controlling the conduction or closing of the air ducts of the first compartment 121 and the second compartment 122.

[0078] Specifically, referring to Figure 3, is the first schematic diagram of the air duct structure of the refrigerator in the embodiment of the present invention. An air duct structure leading to the first compartment 121 and the second compartment 122 is provided in the refrigerator to realize the transmission of air volume to the first compartment 121 and the second compartment 122. An electric damper 141 is provided at the intersection of the air ducts of the first compartment 121 and the second compartment 122. By controlling the running angle of the stepping motor of the electric damper 141, the opening angle of the electric damper is controlled, so that it can conduct or close the air duct inlet and outlet 142 leading to the first compartment 121, or conduct or close the air duct inlet and outlet 143 leading to the second compartment 122.

[0079] The refrigerator 10 is further provided with a temperature sensor 15. The temperature sensor 15 can be set to include multiple sub-sensors according to requirements, which are respectively used to collect ambient temperature, compartment temperature, evaporator temperature, and so on.

[0080] The refrigerator 10 further includes a controller. The controller is connected to components such as the refrigeration system 13, the electric damper 141, and the temperature sensor 15, and is used to obtain and calculate relevant data and generate and issue relevant control instructions.

[0081] Specifically, referring to Figure 4 , is the first working process schematic diagram of the controller in the embodiment of the present invention. The controller is configured to execute the following steps S11 to S12:

[0082] S11. Obtain the refrigeration requirements of the first compartment and the second compartment;

[0083] S13. According to the refrigeration requirements, control the operating state of the refrigeration system and the switching state of the electric damper; wherein, the switching state includes a fully open state and a fully closed state; in the fully open state, the air duct of the first compartment is completely conducted, and the air duct of the second compartment is completely closed; in the fully closed state, the air duct of the first compartment is completely closed, and the air duct of the second compartment is completely conducted.

[0084] In the embodiment of the present invention, referring to Figure 5 and Figure 6 , Figure 5 is the second schematic diagram of the air duct structure of the refrigerator in the embodiment of the present invention, Figure 6 is the third schematic diagram of the air duct structure of the refrigerator in the embodiment of the present invention. The electric damper 141 includes a fully open state and a fully closed state. When the electric damper 141 is in the fully open state, as Figure 5 shown, the electric damper 141 completely covers the air duct inlet and outlet 143 of the second compartment 122, so that the air duct of the first compartment 121 is completely conducted, and the air duct of the second compartment 122 is completely closed. When the electric damper 141 is in the fully closed state, as Figure 6As shown, the electric damper 141 completely covers the air duct inlet and outlet 142 of the first chamber 121, so that the air duct of the first chamber 121 is completely closed and the air duct of the second chamber 122 is completely open.

[0085] Based on this, the embodiment of the present invention obtains the cooling demand of the first chamber and the second chamber through the controller, controls the operation state of the refrigeration system 13 to start operation or stop operation according to the cooling demand, and controls the switch state of the electric damper 141 to be fully open or fully closed.

[0086] Preferably, in step S12, controlling the operating state of the refrigeration system and the switch state of the electric damper according to the refrigeration demand includes:

[0087] When there is a cooling demand for the first chamber and there is no cooling demand for the second chamber, the compressor is controlled to start running and the electric damper is in a fully open state;

[0088] When the second chamber has a cooling demand and the first chamber has no cooling demand, the compressor is controlled to start running and the electric damper is in a fully closed state;

[0089] When there is no cooling demand for the first chamber and the second chamber, the compressor is controlled to stop running, and the electric damper is controlled to be in a fully closed state or a fully open state.

[0090] In the embodiment of the present invention, when the first chamber 121 needs to be refrigerated but the second chamber 122 does not need to be refrigerated, the compressor 131 of the refrigeration system 13 is controlled to start running, and the electric damper 141 is controlled to be in a fully open state. At this time, the air duct of the first chamber 121 is fully connected, and the air duct of the second chamber 122 is completely closed. The air volume enters the first chamber 121 through the air duct of the first chamber 121, thereby realizing the temperature reduction control of the first chamber 121.

[0091] When the second chamber 122 needs to be refrigerated but the first chamber 121 does not need to be refrigerated, the compressor 131 of the refrigeration system 13 is controlled to start running, and the electric damper 141 is controlled to be in a fully closed state. At this time, the air duct of the second chamber 122 is fully connected, and the air duct of the first chamber 121 is completely closed. The air volume enters the second chamber 122 through the air duct of the second chamber 122, so as to realize the temperature reduction control of the second chamber 122.

[0092] When neither the first chamber 121 nor the second chamber 122 needs to be refrigerated, the compressor 131 of the refrigeration system 13 is controlled to stop running. At this time, there is no restriction on the switch state of the electric damper 141, for example, it can be in a fully open state or a fully closed state.

[0093] By adopting the technical means of the embodiments of the present invention, through improving the air duct structure of the refrigerator, only one electric air damper is used to achieve precise temperature control of the dual temperature zones, effectively saving the component cost of the refrigerator, reducing the use cost of the refrigerator, making the refrigerator structure more compact, reducing the occupation of the effective use space of the refrigerator, improving the volume ratio of the refrigerator, and enhancing the user experience.

[0094] As a preferred embodiment, the embodiments of the present invention are further implemented on the basis of the above embodiments to explain the means for judging the refrigeration demand of the compartments. The temperature sensors 15 of the refrigerator 10 include a first temperature sensor and a second temperature sensor; the first temperature sensor is arranged in the first compartment 121 for collecting the compartment temperature of the first compartment 121, denoted as the first compartment temperature Tr; the second temperature sensor is arranged in the second compartment 122 for collecting the compartment temperature of the second compartment 122, denoted as the second compartment temperature Tb;

[0095] Then step S11, that is, obtaining the refrigeration demands of the first compartment and the second compartment, includes steps S111 to S114:

[0096] S111. When the first compartment temperature is greater than the preset first startup temperature, it is determined that the first compartment has a refrigeration demand;

[0097] S112. When the first compartment temperature is less than or equal to the preset first shutdown temperature, it is determined that the first compartment has no refrigeration demand; the first startup temperature is greater than the first shutdown temperature;

[0098] S113. When the second compartment temperature is greater than the preset second startup temperature, it is determined that the second compartment has a refrigeration demand;

[0099] S114. When the second compartment temperature is less than or equal to the preset second shutdown temperature, it is determined that the second compartment has no refrigeration demand; the second startup temperature is greater than the second shutdown temperature.

[0100] In the embodiments of the present invention, the startup and shutdown temperatures for the first compartment 121 are preset in advance, that is, the first startup temperature Tr1 and the first shutdown temperature Tr2, Tr1 > Tr2. When Tr > Tr1 is satisfied, it indicates that the first compartment temperature is too high at this time and refrigeration operation needs to be performed on the first compartment 121, and it is determined that the first compartment 121 has a refrigeration demand. When Tr ≤ Tr2 is satisfied, it indicates that the first compartment temperature is relatively low at this time and refrigeration operation does not need to be performed on the first compartment 121, and it is determined that the first compartment 121 has no refrigeration demand.

[0101] Similarly, the start and stop temperatures for the second compartment 122 are preset, namely the second start temperature Tb1 and the second stop temperature Tb2, where Tb1 > Tb2. When Tb > Tb1, it indicates that the temperature of the second compartment is too high at this time, and refrigeration operation needs to be performed on the second compartment 122, determining that the second compartment 122 has a refrigeration demand. When Tb ≤ Tb2, it indicates that the temperature of the second compartment is relatively low at this time, and refrigeration operation does not need to be performed on the second compartment 122, determining that the second compartment 122 does not have a refrigeration demand.

[0102] By adopting the technical means of the embodiment of the present invention, the compartment temperature of the storage compartment of the refrigerator is collected to monitor the storage environmental conditions of the storage compartment, and then it is determined whether the storage compartment has a refrigeration demand. The determination process is simple and has high accuracy.

[0103] As a preferred implementation manner, the embodiment of the present invention is further implemented on the basis of any of the above embodiments. The switch state of the electric air door 141 further includes an intermediate state between the fully open state and the fully closed state. In the intermediate state, there is a certain opening degree of conduction in the air ducts of the first compartment and the second compartment.

[0104] In the embodiment of the present invention, referring to Figure 7 , which is the fourth schematic diagram of the air duct structure of the refrigerator in the embodiment of the present invention. The intermediate state refers to a state between the fully open state and the fully closed state. When the electric air door 141 is in the intermediate state, as Figure 7 shown, the electric air door 141 is located between the air duct inlet and outlet 142 of the first compartment 121 and the air duct inlet and outlet 143 of the second compartment 122, and cannot completely cover the air duct inlets and outlets of the first compartment 121 and the second compartment 122, so that there is a certain opening degree of conduction in the air duct of the first compartment 121, and there is also a certain opening degree of conduction in the air duct of the second compartment 122.

[0105] Based on this, the control of the operating state of the refrigeration system and the switch state of the electric air door according to the refrigeration demand further includes:

[0106] When both the first compartment and the second compartment have a refrigeration demand, control the compressor to start running and control the electric air door to be in the intermediate state.

[0107] In the embodiment of the present invention, when the first chamber 121 and the second chamber 122 need to be refrigerated at the same time, the compressor 131 of the refrigeration system 13 is controlled to start running, and the electric damper 141 is controlled to be in an intermediate state between the fully open state and the fully closed state. At this time, the air duct of the first chamber 121 is partially connected, and the air duct of the second chamber 122 is also partially connected. Part of the air volume enters the first chamber 121 through the air duct of the first chamber 121, and part of the air volume enters the second chamber 122 through the air duct of the second chamber 122, thereby realizing the temperature reduction control of the first chamber 121 and the second chamber 122.

[0108] As a preferred implementation, the embodiment of the present invention is further implemented on the basis of the above embodiment. When both compartments have cooling demand, the embodiment of the present invention controls the opening angle of the electric damper 141 to allocate the air volume ratio between the first compartment and the second compartment.

[0109] When both the first chamber and the second chamber have cooling requirements, controlling the compressor to start running and controlling the electric damper to be in an intermediate state includes:

[0110] When both the first chamber and the second chamber have cooling needs, the compressor is controlled to start running, and the electric damper is controlled to be in an intermediate state and an opening angle according to the temperature of the first chamber and the temperature of the second chamber.

[0111] Preferably, when both the first chamber and the second chamber have cooling demand, the compressor is controlled to start running, and the electric damper is controlled to be in an intermediate state and an opening angle thereof according to the temperature of the first chamber and the temperature of the second chamber, including:

[0112] When both the first chamber and the second chamber have cooling demand, controlling the compressor to start running;

[0113] Comparing the cooling requirements of the first chamber and the second chamber according to the temperature of the first chamber and the temperature of the second chamber;

[0114] When the cooling demand of the temperature of the first chamber is less than the cooling demand of the second chamber, the electric damper is controlled to be in an intermediate state and the opening angle is a first angle;

[0115] When the cooling demand of the temperature of the first chamber is equal to the cooling demand of the second chamber, controlling the electric damper to be in an intermediate state and the opening angle to be a second angle;

[0116] When the cooling demand of the temperature of the first chamber is greater than the cooling demand of the second chamber, the electric damper is controlled to be in an intermediate state and the opening angle is a third angle;

[0117] Among them, the third angle is greater than the second angle, the second angle is greater than the first angle, and the larger the opening angle is, the larger the opening degree of the air duct of the first chamber is.

[0118] In the embodiment of the present invention, referring to Figure 7 , when the electric air door 141 is in the middle state, the electric air door 141 is controlled by its stepping motor to be at the first angle A1, the second angle A2 or the third angle A3, where A3 > A2 > A1. When the electric air door 141 is at the first angle A1, the opening degree of the air duct of the first chamber 121 is smaller than that of the air duct of the second chamber 122, that is, the air volume leading to the first chamber 121 is less than the air volume leading to the second chamber 122; when the electric air door 141 is at the second angle A2, the opening degree of the air duct of the first chamber 121 is approximately equal to that of the air duct of the second chamber 122, that is, the air volume leading to the first chamber 121 is approximately equal to the air volume leading to the second chamber 122; when the electric air door 141 is at the third angle A3, the opening degree of the air duct of the first chamber 121 is greater than that of the air duct of the second chamber 122, that is, the air volume leading to the first chamber 121 is more than the air volume leading to the second chamber 122.

[0119] Based on this, in the embodiment of the present invention, by collecting the temperature Tr of the first chamber and the temperature Tb of the second chamber, the cooling requirements of the first chamber 121 and the second chamber 122 represented by them are respectively determined. By comparing the cooling requirements of the two chambers, the opening angle of the electric air door 141 in the middle state is controlled, so as to control the air duct of the chamber with a larger air volume requirement to have a larger opening degree, so that it obtains a larger air volume ratio.

[0120] More preferably, the control means for the opening angle of the electric air door 141 in the middle state is further optimized. In the embodiment of the present invention, the start-stop correction temperatures for the first chamber 121 are preset, including the first correction temperature tx1 and the second correction temperature tx2, and the start-stop correction temperatures for the second chamber 122 are preset, including the third correction temperature ty1 and the fourth correction temperature ty2, where, as Figure 8 shown, is a schematic diagram of the relationship between various temperature parameters in the embodiment of the present invention. The first correction temperature tx1 is greater than the second correction temperature tx2, and the third correction temperature ty1 is greater than the fourth correction temperature ty2. And, the sum of the first stop temperature Tr2 and the first correction temperature tx1 is still less than the first start temperature Tr1, and the sum of the second stop temperature Tb2 and the third correction temperature ty1 is still less than the second start temperature Tb1.

[0121] Then refer to Figure 9, which is the schematic diagram of the second working process of the controller in the embodiment of the present invention. According to the first chamber temperature and the second chamber temperature, controlling the electric air door to be in the middle state and its opening angle specifically includes:

[0122] When the first chamber temperature is greater than the sum of the first shutdown temperature and the first correction temperature, and the second chamber temperature is greater than the sum of the second shutdown temperature and the third correction temperature; or,

[0123] When the first chamber temperature is greater than the sum of the first shutdown temperature and the second correction temperature, less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the second chamber temperature is greater than the sum of the second shutdown temperature and the fourth correction temperature, less than or equal to the sum of the second shutdown temperature and the third correction temperature; or,

[0124] When the first chamber temperature is greater than the first shutdown temperature, less than or equal to the sum of the first shutdown temperature and the second correction temperature, and the second chamber temperature is greater than the second shutdown temperature, less than or equal to the sum of the second shutdown temperature and the fourth correction temperature, control the electric air door to be in the middle state and the opening angle to be the second angle;

[0125] When the first chamber temperature is greater than the sum of the first shutdown temperature and the first correction temperature, and the second chamber temperature is greater than the second shutdown temperature, less than or equal to the sum of the second shutdown temperature and the third correction temperature; or,

[0126] When the first chamber temperature is greater than the sum of the first shutdown temperature and the second correction temperature, less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the second chamber temperature is greater than the second shutdown temperature, less than or equal to the sum of the second shutdown temperature and the fourth correction temperature, control the electric air door to be in the middle state and the opening angle to be the third angle;

[0127] When the first chamber temperature is greater than the first shutdown temperature, less than or equal to the sum of the first shutdown temperature and the second correction temperature, and the second chamber temperature is greater than the sum of the second shutdown temperature and the fourth correction temperature; or,

[0128] When the first chamber temperature is greater than the sum of the first shutdown temperature and the second correction temperature, less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the second chamber temperature is greater than the sum of the second shutdown temperature and the third correction temperature, control the electric air door to be in the middle state and the opening angle to be the first angle.

[0129] Specifically, according to the first corrected temperature tx1 and the second corrected temperature tx2, the temperature of the first chamber 121 between the first shutdown temperature Tr2 and the first startup temperature Tr1 is divided into three intervals, exemplified by temperature intervals B1, B2, and B3. And, according to the third corrected temperature ty1 and the fourth corrected temperature ty2, the temperature of the second chamber 122 between the second shutdown temperature Tb2 and the second startup temperature Tb1 is divided into three intervals, exemplified by temperature intervals C1, C2, and C3.

[0130] When the temperature Tr of the first chamber is greater than the first startup temperature Tr1 and the temperature Tb of the second chamber is greater than the second startup temperature Tb1, it is determined that there is a refrigeration demand in both chambers. At this time, the compressor is controlled to start running, and the electric air damper 141 is in the middle state.

[0131] Furthermore, when the temperature Tr of the first chamber and the temperature Tb of the second chamber are in the same echelon of temperature intervals, for example, when the temperature Tr of the first chamber is in the B1 temperature interval and the temperature Tb of the second chamber is in the C1 temperature interval, it indicates that their refrigeration demands are similar. Therefore, the electric air damper is controlled to be in the second angle A2, so that the duct opening degrees of the two chambers are approximately the same. Similarly, when the temperature Tr of the first chamber is in the B2 temperature interval and the temperature Tb of the second chamber is in the C2 temperature interval, or when the temperature Tr of the first chamber is in the B3 temperature interval and the temperature Tb of the second chamber is in the C3 temperature interval, the electric air damper is controlled to be in the second angle A2.

[0132] When the temperature Tr of the first chamber and the temperature Tb of the second chamber are in different echelons of temperature intervals, a specific judgment is further made. For example, when the temperature Tr of the first chamber is in the B1 temperature interval while the temperature Tb of the second chamber is in the C2 or C3 temperature interval, or when the temperature Tr of the first chamber is in the B2 temperature interval while the temperature Tb of the second chamber is in the C3 temperature interval, at this time, it is considered that the refrigeration demand of the first chamber 121 is greater. Therefore, the electric air damper is controlled to be in the third angle A3, so that the opening degree of the duct of the first chamber 121 is greater than the opening degree of the duct of the second chamber 122.

[0133] For example, when the temperature Tr of the first chamber is in the B3 temperature interval while the temperature Tb of the second chamber is in the C1 or C2 temperature interval, or when the temperature Tr of the first chamber is in the B3 or B2 temperature interval while the temperature Tb of the second chamber is in the C1 temperature interval, at this time, it is considered that the refrigeration demand of the second chamber 122 is greater. Therefore, the electric air damper is controlled to be in the second angle A2, so that the opening degree of the duct of the second chamber 122 is greater than the opening degree of the duct of the first chamber 121.

[0134] Understandably, the above scenarios are only a preferred implementation manner. In the actual application process, the specific opening angle of the electric air damper and the start / stop correction temperature of each compartment can be set according to actual needs, and no specific limitation is made here.

[0135] By adopting the technical means of the embodiment of the present invention, when there is a refrigeration demand in both temperature zones simultaneously, the stepping motor of the electric air damper is used to adjust the opening angle of the electric air damper, and the air volume ratio of the two compartments is allocated as required, so as to achieve precise temperature control of the two compartments and ensure the normal and effective operation of the refrigerator.

[0136] As a preferred implementation manner, the embodiment of the present invention is further implemented on the basis of any of the above embodiments. The temperature sensor 15 of the refrigerator further includes a third temperature sensor for collecting the ambient temperature Th.

[0137] Then refer to Figure 10 , which is the schematic diagram of the third working process of the controller in the embodiment of the present invention. Controlling the operating state of the refrigeration system according to the refrigeration demand further includes:

[0138] When there is a refrigeration demand in the first compartment and / or the second compartment, control the fan to start running;

[0139] According to the ambient temperature, control the rotation speed Zs of the fan; wherein, the ambient temperature is positively correlated with the rotation speed of the fan.

[0140] As an example, set ambient temperature thresholds Th1, Th2, and Th3, and Th1 > Th2 > Th3, and set multiple rotation speed gears Zs1, Zs2, and Zs3 of the fan 135, and Zs1 > Zs2 > Zs3.

[0141] When Th > Th1, control the current operating rotation speed of the fan to be Zs1; when Th2 ≤ Th ≤ Th1, control the current operating rotation speed of the fan to be Zs2; when Th < Th3, control the current operating rotation speed of the fan to be Zs3.

[0142] By adopting the technical means of the embodiment of the present invention, different fan rotation speeds are correspondingly matched according to different ambient temperatures. When the ambient temperature is high, that is, in the case of high load, a high rotation speed is matched for the fan. When the ambient temperature is low, that is, in the case of low load, a low rotation speed is matched for the fan, so as to achieve the purpose of energy saving.

[0143] As a preferred implementation manner, the embodiment of the present invention is further implemented on the basis of any of the above embodiments. The temperature sensor 15 of the refrigerator further includes a fourth temperature sensor disposed on the surface of the evaporator 132 for collecting the evaporator temperature Tz;

[0144] Refer to Figure 10, the controller is further configured to:

[0145] When the evaporator temperature is less than or equal to a preset evaporator temperature threshold tz1, or when there is no refrigeration demand in both the first compartment and the second compartment, control the compressor to shut down, start the operation of the blower, and keep the electric air damper in the fully open state, and enter the defrost mode until the evaporator temperature is greater than the evaporator temperature threshold.

[0146] In the embodiment of the present invention, the evaporator temperature Tz is collected in real time. When Tz ≤ tz1, the compressor is controlled to shut down, the blower is controlled to start running, and the electric air damper 141 is controlled to be in the fully open state, and the refrigerator system enters the defrost mode; when Tz > tz1, the system exits the defrost mode, and further determines the compartment temperatures of the first compartment 121 and the second compartment 122, and performs corresponding refrigeration control.

[0147] By adopting the technical means of the embodiment of the present invention, defrost control of the refrigerator is realized on the basis of the program for realizing temperature control of a dual-temperature zone through a single electric air damper, improving the flexibility of the refrigerator.

[0148] The embodiment of the present invention provides a method for controlling an electric air damper of a refrigerator, and the refrigerator includes:

[0149] A box body, internally provided with a first compartment and a second compartment;

[0150] An electric air damper, arranged at the intersection of the air ducts of the first compartment and the second compartment, for controlling the conduction or closing of the air ducts of the first compartment and the second compartment;

[0151] A refrigeration system, for realizing the refrigeration function of the refrigerator, and the refrigeration system includes a compressor;

[0152] The method includes the following steps:

[0153] Obtain the refrigeration demands of the first compartment and the second compartment;

[0154] According to the refrigeration demands, control the operating state of the refrigeration system and the switching state of the electric air damper; wherein, the switching state includes a fully open state and a fully closed state; in the fully open state, the air duct of the first compartment is completely conducted, and the air duct of the second compartment is completely closed; in the fully closed state, the air duct of the first compartment is completely closed, and the air duct of the second compartment is completely conducted.

[0155] It should be noted that the method for controlling an electric air damper of a refrigerator provided by the embodiment of the present invention has the same all process steps as those executed by a refrigerator controller in the above embodiment, and the working principles and beneficial effects of the two correspond one by one, so they will not be elaborated herein.

[0156] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above various methods. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM), etc.

[0157] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A refrigerator, characterized in that: include: A box body, which has a first chamber and a second chamber therein; An electric damper, provided at the intersection of the air ducts of the first chamber and the second chamber, for controlling the opening or closing of the air ducts of the first chamber and the second chamber; A refrigeration system, used to realize the refrigeration function of the refrigerator, wherein the refrigeration system comprises a compressor; Controller for: Obtaining cooling requirements of the first room and the second room; According to the refrigeration demand, the operating state of the refrigeration system and the switch state of the electric damper are controlled; wherein the switch state includes a fully open state and a fully closed state; in the fully open state, the air duct of the first chamber is fully connected, and the air duct of the second chamber is fully closed; in the fully closed state, the air duct of the first chamber is fully closed, and the air duct of the second chamber is fully connected.

2. The refrigerator according to claim 1, characterized in that: The refrigerator further includes a first temperature sensor and a second temperature sensor; the first temperature sensor is used to collect the compartment temperature of the first compartment, recorded as the first compartment temperature; the second temperature sensor is used to collect the compartment temperature of the second compartment, recorded as the second compartment temperature; The obtaining the cooling requirements of the first chamber and the second chamber includes: When the temperature of the first chamber is greater than a preset first startup temperature, it is determined that there is a cooling demand for the first chamber; When the temperature of the first compartment is less than or equal to the preset first shutdown temperature, it is determined that there is no cooling demand for the first compartment; the first startup temperature is greater than the first shutdown temperature; When the temperature of the second chamber is greater than a preset second startup temperature, it is determined that there is a cooling demand for the second chamber; When the temperature of the second compartment is less than or equal to the preset second shutdown temperature, it is determined that there is no cooling demand for the second compartment; and the second startup temperature is greater than the second shutdown temperature.

3. The refrigerator according to claim 1, characterized in that: The controlling the operating state of the refrigeration system and the switch state of the electric damper according to the refrigeration demand includes: When there is a cooling demand for the first chamber and there is no cooling demand for the second chamber, the compressor is controlled to start running and the electric damper is in a fully open state; When the second chamber has a cooling demand and the first chamber has no cooling demand, the compressor is controlled to start running and the electric damper is in a fully closed state; When there is no cooling demand for the first chamber and the second chamber, the compressor is controlled to stop running, and the electric damper is controlled to be in a fully closed state or a fully open state.

4. The refrigerator according to claim 2, characterized in that: The switch state also includes an intermediate state between the fully open state and the fully closed state, in which the air ducts of the first chamber and the second chamber are both connected to a certain degree of opening; Then, controlling the operating state of the refrigeration system and the switch state of the electric damper according to the refrigeration demand includes: When both the first chamber and the second chamber have cooling needs, the compressor is controlled to start running, and the electric damper is controlled to be in an intermediate state.

5. The refrigerator according to claim 4, characterized in that: When both the first chamber and the second chamber have cooling requirements, controlling the compressor to start running and controlling the electric damper to be in an intermediate state includes: When both the first chamber and the second chamber have cooling needs, the compressor is controlled to start running, and the electric damper is controlled to be in an intermediate state and an opening angle according to the temperature of the first chamber and the temperature of the second chamber.

6. The refrigerator according to claim 5, characterized in that: When both the first chamber and the second chamber have cooling demand, the compressor is controlled to start running, and the electric damper is controlled to be in an intermediate state and an opening angle thereof according to the temperature of the first chamber and the temperature of the second chamber, including: When both the first chamber and the second chamber have cooling demand, controlling the compressor to start running; Comparing the cooling requirements of the first chamber and the second chamber according to the temperature of the first chamber and the temperature of the second chamber; When the cooling demand of the temperature of the first chamber is less than the cooling demand of the second chamber, the electric damper is controlled to be in an intermediate state and the opening angle is a first angle; When the cooling demand of the temperature of the first chamber is equal to the cooling demand of the second chamber, controlling the electric damper to be in an intermediate state and the opening angle to be a second angle; When the cooling demand of the temperature of the first chamber is greater than the cooling demand of the second chamber, the electric damper is controlled to be in an intermediate state and the opening angle is a third angle; The third angle is greater than the second angle, the second angle is greater than the first angle, and the larger the opening angle is, the larger the opening of the air duct of the first chamber is.

7. The refrigerator according to claim 5, characterized in that: The controlling the electric damper to be in an intermediate state and an opening angle thereof according to the first chamber temperature and the second chamber temperature specifically includes: When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the sum of the second shutdown temperature and the third correction temperature; or, When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the second correction temperature, and is less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the sum of the second shutdown temperature and the fourth correction temperature, and is less than or equal to the sum of the second shutdown temperature and the third correction temperature; or, When the temperature of the first compartment is greater than the first shutdown temperature and less than or equal to the sum of the first shutdown temperature and the second correction temperature, and the temperature of the second compartment is greater than the second shutdown temperature and less than or equal to the sum of the second shutdown temperature and the fourth correction temperature, the electric damper is controlled to be in an intermediate state and the opening angle is a second angle; When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the second shutdown temperature and less than or equal to the sum of the second shutdown temperature and the third correction temperature; or, When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the second correction temperature, and less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the second shutdown temperature, and less than or equal to the sum of the second shutdown temperature and the fourth correction temperature, the electric damper is controlled to be in an intermediate state and the opening angle is a third angle; When the temperature of the first compartment is greater than the first shutdown temperature, less than or equal to the sum of the first shutdown temperature and the second correction temperature, and the temperature of the second compartment is greater than the sum of the second shutdown temperature and the fourth correction temperature; or, When the temperature of the first compartment is greater than the sum of the first shutdown temperature and the second correction temperature, and less than or equal to the sum of the first shutdown temperature and the first correction temperature, and the temperature of the second compartment is greater than the sum of the second shutdown temperature and the third correction temperature, the electric damper is controlled to be in an intermediate state and the opening angle is a first angle; The first correction temperature is greater than the second correction temperature, the third correction temperature is greater than the fourth correction temperature, the third angle is greater than the second angle, and the second angle is greater than the first angle.

8. The refrigerator according to any one of claims 1 to 7, characterized in that: The refrigerator further comprises a third temperature sensor for collecting the ambient temperature; the refrigeration system further comprises a fan; The controlling the operating state of the refrigeration system according to the refrigeration demand further includes: When there is a cooling demand in the first chamber and / or the second chamber, controlling the fan to start running; The rotation speed of the fan is controlled according to the ambient temperature; wherein the ambient temperature is positively correlated with the rotation speed of the fan.

9. The refrigerator according to claim 8, characterized in that: The refrigeration system includes an evaporator; the refrigerator also includes a fourth temperature sensor for collecting the temperature of the evaporator; The controller is also used for: When the evaporator temperature is less than or equal to a preset evaporator temperature threshold, or when there is no refrigeration demand in the first chamber and the second chamber, the compressor is controlled to be turned off, the fan is started, and the electric damper is in a fully open state, entering the defrost mode.

10. A method for controlling an electric air door of a refrigerator, characterized in that: The refrigerator comprises: A box body, which has a first chamber and a second chamber therein; An electric damper, provided at the intersection of the air ducts of the first chamber and the second chamber, for controlling the opening or closing of the air ducts of the first chamber and the second chamber; A refrigeration system, used to realize the refrigeration function of the refrigerator, wherein the refrigeration system comprises a compressor; The method comprises: Obtaining cooling requirements of the first room and the second room; According to the refrigeration demand, the operating state of the refrigeration system and the switch state of the electric damper are controlled; wherein the switch state includes a fully open state and a fully closed state; in the fully open state, the air duct of the first chamber is fully connected, and the air duct of the second chamber is fully closed; in the fully closed state, the air duct of the first chamber is fully closed, and the air duct of the second chamber is fully connected.

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