Refrigerator with magnetic field fresh-keeping compartment and control method thereof

Abstract

The present invention provides a refrigerator provided with a magnetic field preservation compartment and a control method thereof, wherein the refrigerator includes a box body and a refrigeration duct, wherein a freezing compartment and a magnetic field preservation compartment are defined in the box body, the refrigeration duct extends from the freezing compartment to the magnetic field preservation compartment, and is provided with a preservation damper; an evaporator and a fan are arranged inside the part of the refrigeration duct located in the freezing compartment, and the control method includes: after the refrigerator starts refrigeration, obtaining the temperature of the magnetic field preservation compartment; controlling the opening and closing of the preservation damper according to the temperature of the magnetic field preservation compartment; obtaining the temperature of the evaporator when the preservation damper is in an open state; and controlling the operation mode of the fan according to the temperature of the evaporator. The scheme of the present invention can avoid the freezing of stored objects due to the excessively low temperature of the refrigeration airflow, and effectively improve the quality of fresh-keeping storage.

Description

Technical Field

[0001] The invention relates to refrigeration and freezing equipment, and in particular provides a refrigerator provided with a magnetic field fresh-keeping compartment and a control method thereof. Background Art

[0002] Studies have found that magnetic fields can inhibit the growth of microorganisms and molds and extend the storage period of food. Therefore, magnetic fields can be used to assist in freezing food, thereby achieving the purpose of extending the storage period of food. When using magnetic fields to assist in freezing food, the magnetic field limits the free path of water molecules to a certain extent, which is specifically manifested as the breaking of hydrogen bonds in water molecule clusters. During the phase change process of water, the growth of crystal nuclei is inhibited, the growth rate of ice crystals is higher than the migration rate of water molecules, and the resulting ice crystals are smaller, causing less damage to cells, reducing the loss rate of juice in food, and allowing the nutrition and taste of food to be better preserved.

[0003] Some refrigerators in the prior art are specially equipped with a magnetic field preservation compartment. On the one hand, the temperature is adjusted to ensure that food is preserved without freezing. On the other hand, the magnetic field further inhibits the reproduction of microorganisms such as bacteria and the loss of nutrients, providing a better storage environment for food, especially fruits and vegetables. The target design temperature of the magnetic field preservation compartment is generally set to the range of -1.0 to -3.0°C. If the compartment temperature is lower than -3.0°C, the food is prone to freezing. In order to make the appearance of the magnetic field preservation compartment, the door of the preservation compartment will be designed as a glass door or a transparent plastic door, which has poor insulation effect. When the outlet air temperature drops, the door wall also drops below -3.0°C. When the food is placed against the door wall, it is easy to freeze, affecting the quality of fresh-keeping storage. Summary of the invention

[0004] One purpose of the present invention is to prevent the stored objects from being frozen during the refrigeration process of the magnetic field fresh-keeping compartment, thereby improving the quality of fresh-keeping storage.

[0005] A further object of the present invention is to reduce power consumption and improve refrigeration efficiency.

[0006] To achieve the above object, the present invention provides a control method for a refrigerator provided with a magnetic field preservation compartment, wherein the refrigerator comprises a cabinet and a refrigeration air duct provided in the cabinet, a freezing compartment and a magnetic field preservation compartment are defined in the cabinet, the refrigeration air duct extends from the freezing compartment to the magnetic field preservation compartment, and a preservation air door is provided at a position leading to the magnetic field preservation compartment; an evaporator and a fan are arranged inside the part of the refrigeration air duct located in the freezing compartment, the fan is used to promote the formation of a refrigeration airflow that flows through the evaporator and is supplied to the freezing compartment and / or the magnetic field preservation compartment, and the above control method comprises:

[0007] After the refrigerator starts refrigeration, the temperature of the magnetic field fresh-keeping compartment is obtained;

[0008] Control the opening and closing of the fresh-keeping air door according to the temperature of the magnetic field fresh-keeping compartment;

[0009] When the fresh air door is in the open state, obtain the temperature of the evaporator;

[0010] The fan operation mode is controlled according to the evaporator temperature.

[0011] Optionally, the step of controlling the operation mode of the fan according to the temperature of the evaporator includes:

[0012] Determining whether the temperature of the evaporator is greater than or equal to a preset first temperature threshold;

[0013] If so, control the fan to keep on;

[0014] Determining whether the temperature of the evaporator is less than a preset first temperature threshold and greater than or equal to a preset second temperature threshold;

[0015] If so, control the fan to open at intervals.

[0016] Optionally, after the step of controlling the operation mode of the fan according to the temperature of the evaporator, the step further includes:

[0017] When the temperature of the evaporator is lower than the second temperature threshold, the fresh-keeping damper is closed and the fan is controlled to be continuously turned on.

[0018] Optionally, the start-stop ratio of the fan decreases accordingly as the temperature of the evaporator decreases.

[0019] Optionally, a refrigerating compartment is further defined in the box body, the refrigerating air duct is further configured to extend from the freezing compartment to the refrigerating compartment, and a refrigerating air door is provided at a portion of the refrigerating air duct leading to the refrigerating compartment, and the control method further comprises, after the refrigerator starts refrigeration:

[0020] Get the temperature of the cold storage room;

[0021] Control the opening and closing of the refrigeration damper according to the temperature of the refrigeration compartment.

[0022] Optionally, the step of controlling the opening and closing of the fresh-keeping damper according to the temperature of the magnetic field fresh-keeping compartment comprises: when the temperature of the magnetic field fresh-keeping compartment is greater than or equal to a preset fresh-keeping refrigeration start-up temperature, controlling the fresh-keeping damper to open; and when the temperature of the magnetic field fresh-keeping compartment is less than or equal to a preset fresh-keeping refrigeration shut-off temperature, controlling the fresh-keeping damper to close;

[0023] The step of controlling the opening and closing of the refrigeration damper according to the temperature of the refrigeration compartment includes: when the temperature of the refrigeration compartment is greater than or equal to a preset refrigeration startup temperature, controlling the refrigeration damper to open; and when the temperature of the refrigeration compartment is less than or equal to a preset refrigeration shutdown temperature, controlling the refrigeration damper to close.

[0024] Optionally, when the fresh-keeping air door and the refrigeration air door are both in an open state, the cooling rate of the magnetic field fresh-keeping compartment and the cooling rate of the refrigeration compartment are obtained;

[0025] When the ratio of the cooling rate of the magnetic field fresh-keeping compartment to the cooling rate of the refrigerated compartment exceeds a set threshold, the fresh-keeping damper is controlled to be opened at intervals.

[0026] Optionally, the start-stop ratio of the fresh-keeping damper decreases accordingly as the ratio of the cooling rate of the magnetic field fresh-keeping compartment to the cooling rate of the refrigerating compartment increases.

[0027] Optionally, the opening of the fresh-keeping air door is adjustable, and when the fresh-keeping air door and the refrigeration air door are both opened, the cooling speed of the magnetic field fresh-keeping compartment and the cooling speed of the refrigeration compartment are obtained;

[0028] When the ratio of the cooling rate of the magnetic field fresh-keeping compartment to that of the refrigerating compartment exceeds the set threshold, the opening of the fresh-keeping damper is reduced, and the opening of the fresh-keeping damper decreases accordingly as the ratio of the cooling rate of the magnetic field fresh-keeping compartment to that of the refrigerating compartment increases.

[0029] According to another aspect of the present invention, there is also provided a refrigerator provided with a magnetic field preservation compartment, the refrigerator comprising a box body and a refrigeration air duct provided in the box body, wherein:

[0030] The box is limited to a freezing compartment and a magnetic field preservation compartment.

[0031] The refrigeration air duct extends from the freezing compartment to the magnetic field preservation compartment, and a preservation air door is arranged at the position leading to the magnetic field preservation compartment;

[0032] An evaporator and a fan are arranged inside the part of the refrigeration air duct located in the freezing compartment, and the fan is used to form a refrigeration airflow that flows through the evaporator and is supplied to the freezing compartment and / or the magnetic field preservation compartment;

[0033] The controller comprises a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, any of the above-mentioned control methods for a refrigerator provided with a magnetic field fresh-keeping compartment is implemented.

[0034] Based on the above description, those skilled in the art can understand that in the aforementioned technical solution of the present invention, a magnetic field preservation compartment is provided in the refrigerator body, and a refrigeration air duct provides refrigeration airflow to the freezing compartment and the magnetic field preservation compartment. After the refrigerator starts refrigeration, the opening and closing of the preservation air door is controlled according to the temperature of the magnetic field preservation compartment; when the preservation air door is in the open state, the operation mode of the fan is controlled according to the temperature of the evaporator. By adjusting the operation mode of the fan, the adjustment of the air door and the fan can be used to avoid freezing of the stored objects due to the low temperature of the refrigeration airflow, thereby effectively improving the quality of fresh-keeping storage.

[0035] Furthermore, in the refrigerator provided with a magnetic field fresh-keeping compartment and the control method thereof, the refrigeration air duct also provides refrigeration airflow to the cold storage compartment, and the opening and closing of the cold storage air door are controlled according to the temperature of the cold storage compartment. By adjusting the cold storage air door and the fresh-keeping air door, it is possible to ensure that the magnetic field fresh-keeping compartment and the cold storage compartment are supplied with air for refrigeration at the same time, and the characteristic of the cold storage compartment having a higher return air temperature is utilized to avoid the refrigeration airflow temperature of the magnetic field fresh-keeping compartment being too low.

[0036] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the same reference numerals indicate the same or similar components or parts in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0038] In the attached figure:

[0039] Figure 1 is a schematic diagram of a storage compartment of a refrigerator provided with a magnetic field preservation compartment according to an embodiment of the present invention;

[0040] Figure 2 is an internal side cross-sectional view of a refrigerator provided with a magnetic field preservation compartment according to an embodiment of the present invention;

[0041] Figure 3 is a schematic diagram of a magnetic field preservation compartment in a refrigerator provided with a magnetic field preservation compartment according to an embodiment of the present invention;

[0042] Figure 4 is a system block diagram of a control component of a refrigerator provided with a magnetic field fresh-keeping compartment according to an embodiment of the present invention;

[0043] Figure 5 is a schematic diagram of a control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to an embodiment of the present invention;

[0044] Figure 6 is a flow chart of a process of adjusting a fresh-keeping air door and a refrigeration air door in a control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to an embodiment of the present invention; and

[0045] Figure 7 The present invention is a flow chart of a process of adjusting a fan in a control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0047] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", "primary" and "secondary" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] This embodiment provides a refrigerator 10 provided with a magnetic field fresh-keeping compartment. The refrigerator of the present invention will be described in detail below with reference to the accompanying drawings.

[0050] Figure 1 1 is a schematic diagram of a storage compartment of a refrigerator 10 provided with a magnetic field preservation compartment according to an embodiment of the present invention; Figure 21 is an internal side cross-sectional view of a refrigerator 10 provided with a magnetic field preservation compartment according to an embodiment of the present invention. The refrigerator 10 may include: a box body 101 and a door body 102. The box body 101 may define at least one storage compartment with an open front side, usually multiple, such as a refrigeration compartment 12, a freezer compartment 13, a magnetic field preservation compartment 20, and the like. The number and function of the specific storage compartments may be configured according to pre-determined requirements. The number and function of the specific storage compartments may be configured according to pre-determined requirements. In some embodiments, the preservation temperature of the refrigeration compartment 12 may be 2 to 9°C, or 4 to 7°C; the preservation temperature of the freezer compartment 13 may be -22 to -14°C, or -20 to 16°C. The set temperature of the magnetic field preservation compartment 20 may be set to -1.0 to -3.0°C to store suitable food, reduce the juice loss rate, reduce the number of microorganisms and bacteria, and extend the time of high-quality storage while avoiding freezing of the stored goods.

[0051] The positions and locations of the storage compartments shown in the above figures are only examples and can be adjusted by those skilled in the art as needed.

[0052] The refrigerator 10 uses air cooling to cool the storage compartment. That is, a cooling air duct 123 is provided in the box body 101. The cooling air duct 123 extends from the freezing compartment 13 to the magnetic field preservation compartment 20, and a preservation air door 133 is provided at the position leading to the magnetic field preservation compartment 20. An evaporator 141 and a fan 142 are arranged inside the portion of the cooling air duct 123 located in the freezing compartment 13, and the fan 142 is used to promote the formation of a cooling airflow that flows through the evaporator 141 and is supplied to the freezing compartment 13 and / or the magnetic field preservation compartment 20.

[0053] In the case that the refrigerator 10 is further provided with a refrigerating compartment 12 , the refrigerating air duct 123 is also configured to extend from the freezing compartment 13 to the refrigerating compartment 12 , and a refrigerating air door 134 is provided at the portion of the refrigerating air duct 123 leading to the refrigerating compartment 12 .

[0054] The fan 142 provides power for the airflow in the refrigeration air duct 123, and can simultaneously supply air to the refrigeration compartment 12, the freezing compartment 13, and the magnetic field preservation compartment 20. The preservation air door 133 is used to adjust the on and off of the refrigeration airflow of the magnetic field preservation compartment 20, and the refrigeration air door 134 is used to adjust the on and off of the refrigeration airflow of the refrigeration compartment 12. The fan 142, the preservation air door 133, and the refrigeration air door 134 can all be opened and closed in a controlled manner, so that the refrigeration airflow meets the refrigeration requirements of the refrigerator 10. The fan 142 supplies air to multiple compartments, and the preservation air door 133 and the refrigeration air door 134 are used to switch the airflow, which reduces the air path components and saves the space occupied by the refrigeration air duct 123.

[0055] The refrigerated compartment 12, the freezing compartment 13, and the magnetic field preservation compartment 20 respectively have an air supply port and an air return port connected to the refrigeration air duct 123. After the refrigeration airflow is blown into the corresponding compartment from the air supply port 22, it cools the interior of the compartment and then returns to the refrigeration air duct 123 from the air return port to exchange heat with the evaporator 141 again, completing the refrigeration airflow cycle. The refrigerated compartment 12 has a refrigeration air supply port 122, and the magnetic field preservation compartment 20 has a preservation air supply port 22 and a preservation air return port 23.

[0056] The magnetic field preservation chamber 20 may be provided with an air flow passage surrounding the internal space, and the air flow passage is connected with the air supply port 22 and the air return port 23 of the magnetic field preservation chamber 20. On the one hand, the magnetic field preservation chamber 20 can be refrigerated and cooled, so that the internal temperature is stabilized within the set preservation temperature range; on the other hand, the temperature of each area of ​​the magnetic field preservation chamber 20 can be made uniform.

[0057] Figure 3 Schematic diagram of a magnetic field preservation compartment 20 in a refrigerator 10 provided with a magnetic field preservation compartment according to an embodiment of the present invention.

[0058] The magnetic field preservation compartment 20 can be configured as a drawer, for example, the magnetic field preservation compartment 20 can include a barrel 25 and a drawer 24. The rear portion of the barrel 25 forms an air supply port 22 and an air return port 23 that are connected to the refrigeration air duct 123. The drawer 24 is pullable and disposed in the barrel 25, and a preservation space is defined therein, that is, the preservation space in the drawer 24 can realize the magnetic field preservation function through magnetic field and temperature control.

[0059] The magnetic field preservation compartment 20 is configured to form a surrounding air duct that flows from the air supply port 22 through the top wall of the barrel 25, the front baffle of the drawer 24, and the space below the bottom plate of the drawer 24 to the return air port 23 in sequence. The surrounding air duct enters the interior of the magnetic field preservation compartment 20 from the fresh-keeping air supply port 22 at the top rear end of the magnetic field preservation compartment 20, passes through the top wall of the barrel 25, enters the top of the front baffle of the drawer 24, flows through the front baffle of the drawer 24, enters the space below the bottom plate of the drawer 24 from the bottom, and then returns to the fresh-keeping return air port 23 located on the rear wall of the barrel 25 to complete the air flow cycle. That is, an air duct interlayer is provided in the front baffle of the drawer 24, and air is supplied at the front end of the magnetic field preservation compartment 20 by using the air duct interlayer. The above-mentioned surrounding air duct can make the interior of the magnetic field preservation compartment 20 evenly cooled, and at the same time take away the heat of the magnetic field assembly 30.

[0060] The magnetic field preservation compartment 20 can use an electromagnetic assembly as a magnetic field element, or a permanent magnet as a magnetic field element. For example, an electromagnetic coil and a magnetic conductive plate are combined to form an electromagnetic plate, or a magnetic plate is made of a permanent magnet. In addition, the magnetic field assembly can also use an electromagnetic coil and a permanent magnet in combination to generate a magnetic field.

[0061] In some embodiments, the magnetic assembly may include two oppositely disposed magnetic plates, for example, arranged on the top wall and bottom wall of the magnetic field preservation compartment 20. The magnetic field directions of the magnetic plates may be set to be in the same direction, thereby forming a uniform magnetic field in the magnetic field preservation space with a strength that meets the preservation requirements.

[0062] In some embodiments, the magnetic field assembly may further include a magnetic tape. The magnetic tape is used to connect the magnetic plates arranged opposite to each other, so as to form an annular magnetic conductive path of the drawer 24. The annular magnetic conductive path may be made of a material with low coercivity and high magnetic permeability. The magnetic conductive path formed by the annular magnetic conductive path may be used to gather the magnetic field, improve the uniformity of the magnetic field in the storage space, and reduce the release of the magnetic field to the outside, thereby reducing interference with other components outside the magnetic field preservation compartment 20 (for example, avoiding magnetization of other components, etc.).

[0063] Figure 4 1 is a system block diagram of a control component of a refrigerator 10 provided with a magnetic field fresh-keeping compartment according to an embodiment of the present invention. The controller 17 includes a memory 172 and a processor 171, wherein the memory 172 stores a machine executable program 173, and when the machine executable program 173 is executed by the processor 171, the control method of the refrigerator provided with a magnetic field fresh-keeping compartment of this embodiment is implemented.

[0064] The controller 17 is connected to the refrigeration system, the fan 142, the fresh air door 133, and the refrigeration air door 134 for providing control signals, which are used to control the opening and closing of the fan 142, the fresh air door 133, and the refrigeration air door 134, so as to adjust the refrigeration. The controller 17 can be integrated on the main control board of the refrigerator 10.

[0065] The controller 17 can be implemented by various devices with certain data processing capabilities. In a typical configuration, the controller 17 can also include an input / output interface to obtain external detection signals such as the temperature of the storage room as a control basis. Temperature detection components such as temperature sensors are arranged inside each storage room to obtain the internal temperature of the storage room. The controller 17 is connected to the signals of these temperature detection components to obtain the required temperature parameters.

[0066] It should be noted that the logic and / or steps represented in the flowchart of the control method of the refrigerator provided with a magnetic field fresh-keeping compartment of the present embodiment or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or equipment (such as a computer-based system, a system including a processor or other system that can fetch instructions from an instruction execution system, device or equipment and execute instructions), or used in combination with these instruction execution systems, devices or equipment.

[0067] More specific examples of memory 172 include the following: an electrical connection having one or more wirings (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM).

[0068] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in the memory 172 and executed by a suitable instruction execution system.

[0069] In addition, it should be noted that in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it is understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0070] This embodiment also provides a control method for a refrigerator 10 provided with a magnetic field fresh-keeping compartment. Figure 5 Schematic diagram of a control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to an embodiment of the present invention.

[0071] The control method of the refrigerator provided with a magnetic field fresh-keeping compartment may generally include:

[0072] Step S502, after the refrigerator starts refrigeration, the temperature of the magnetic field preservation compartment is obtained.

[0073] Step S504, controlling the opening and closing of the fresh-keeping damper according to the temperature of the magnetic field fresh-keeping compartment.

[0074] Step S506, when the fresh air door is in the open state, the temperature of the evaporator is obtained. The temperature of the evaporator can be measured by a temperature detection device arranged at the evaporator.

[0075] Step S508, controlling the operation mode of the fan according to the temperature of the evaporator. This step may include determining whether the temperature of the evaporator is greater than or equal to a preset first temperature threshold; if so, controlling the fan to be continuously turned on; determining whether the temperature of the evaporator is less than the preset first temperature threshold and greater than or equal to a preset second temperature threshold; if so, controlling the fan to be turned on intermittently. The first temperature threshold and the second temperature threshold can be set according to the temperature state of normal operation of the evaporator and the storage requirements of the magnetic field preservation device, and the first temperature threshold is set to be greater than the second temperature threshold. For example, the first temperature threshold can be set to -15 degrees Celsius, and the second temperature threshold can be set to -20 degrees Celsius.

[0076] When the fan is turned on at intervals, the start-stop ratio of the fan decreases accordingly as the temperature of the evaporator decreases. Alternatively, the start-stop ratio of the fan can also be set to a fixed value, such as turning on for 1 minute and turning off for 1 minute.

[0077] When the temperature of the evaporator is lower than the second temperature threshold, the fresh-keeping damper is closed and the fan is controlled to be continuously turned on.

[0078] The working principle of the above-mentioned fan is: if the evaporator temperature is too low, the temperature of the refrigerated air flow sent to the magnetic field preservation compartment is too low, which may cause the stored items inside the magnetic field preservation compartment to freeze. Therefore, when the evaporator temperature drops to a certain temperature range, the fan is started at intervals to prevent the refrigerated air flow sent to the magnetic field preservation compartment from being too low. If the evaporator temperature continues to drop, the preservation damper is closed to prevent freezing inside the magnetic field preservation compartment. The control method of the above-mentioned fan can also minimize the impact on the refrigeration of the refrigeration compartment and the freezer compartment.

[0079] As for the control of the refrigerated compartment, the temperature of the refrigerated compartment can also be obtained after the refrigerator starts refrigeration; the opening and closing of the refrigerated damper is controlled according to the temperature of the refrigerated compartment.

[0080] The step of controlling the opening and closing of the fresh-keeping damper according to the temperature of the magnetic field fresh-keeping compartment includes: when the temperature of the magnetic field fresh-keeping compartment is greater than or equal to the preset fresh-keeping refrigeration start-up temperature, controlling the fresh-keeping damper to open; and when the temperature of the magnetic field fresh-keeping compartment is less than or equal to the preset fresh-keeping refrigeration shutdown temperature, controlling the fresh-keeping damper to close.

[0081] The step of controlling the opening and closing of the refrigeration damper according to the temperature of the refrigeration compartment includes: when the temperature of the refrigeration compartment is greater than or equal to a preset refrigeration startup temperature, controlling the refrigeration damper to open; and when the temperature of the refrigeration compartment is less than or equal to a preset refrigeration shutdown temperature, controlling the refrigeration damper to close.

[0082] Through the above control method, it can be ensured that the temperatures of the magnetic field preservation compartment and the refrigerated compartment are always within their respective specified ranges, thus meeting the storage temperature requirements.

[0083] Furthermore, when both the fresh-keeping air door and the refrigerating air door are in the open state, the cooling speed of the magnetic field fresh-keeping compartment and the cooling speed of the refrigerating compartment are obtained; when the ratio of the cooling speed of the magnetic field fresh-keeping compartment exceeding the cooling speed of the refrigerating compartment exceeds the set threshold, the fresh-keeping air door is controlled to be opened at intervals. The start-stop ratio of the fresh-keeping air door decreases accordingly as the ratio of the cooling speed of the magnetic field fresh-keeping compartment exceeding the cooling speed of the refrigerating compartment increases.

[0084] Another optional adjustment scheme is: the opening of the fresh-keeping air door is adjustable, and when the fresh-keeping air door and the refrigeration air door are both in the open state, the cooling rate of the magnetic field fresh-keeping compartment and the cooling rate of the refrigeration compartment are obtained; when the ratio of the cooling rate of the magnetic field fresh-keeping compartment exceeding the cooling rate of the refrigeration compartment exceeds the set threshold, the opening of the fresh-keeping air door is reduced, and the opening of the fresh-keeping air door is correspondingly reduced as the ratio of the cooling rate of the magnetic field fresh-keeping compartment exceeding the cooling rate of the refrigeration compartment increases.

[0085] The working principle of the above control method is: try to ensure that the magnetic field preservation compartment and the cold storage compartment are cooled at the same time. When the cold storage compartment is refrigerated, the evaporator is affected by the cold storage return air, and its temperature is relatively high, which also makes the temperature of the refrigeration airflow of the magnetic field preservation compartment correspondingly increased. When the cold storage damper is closed, the cold storage compartment stops the air circulation, and the evaporator temperature decreases accordingly. At this time, the temperature of the magnetic field preservation compartment will also decrease accordingly. Therefore, in order to avoid the storage inside the magnetic field preservation compartment from being frozen, the cold storage damper and the preservation damper can be adjusted to ensure that the magnetic field preservation compartment and the cold storage compartment are cooled at the same time. For the refrigerator using the present embodiment, when the cold storage compartment is refrigerated, the evaporator is about -15°C; when the cold storage damper is closed, the cold storage compartment stops the air circulation, and the evaporator temperature can drop from -15°C to below -20°C. At this time, the storage near the magnetic field preservation compartment is likely to be frozen.

[0086] Figure 6 The present invention is a flow chart of the process of adjusting the fresh-keeping air door and the refrigeration air door in the control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to an embodiment of the present invention. The process of adjusting the air door includes:

[0087] Step S602, the refrigerator compressor is started, and the fan is started;

[0088] Step S604, obtaining the temperature Tc of the magnetic field preservation compartment and the temperature Tr of the refrigeration compartment;

[0089] Step S606, determining whether Tr is greater than or equal to the refrigeration start-up temperature T-ron, that is, whether Tr ≥ T-ron is established;

[0090] Step S608, opening the refrigeration damper;

[0091] Step S610, determining whether Tc is greater than or equal to the fresh-keeping refrigeration start-up temperature T-con, that is, whether Tc ≥ T-con is established;

[0092] Step S612, opening the fresh-keeping air door;

[0093] Step S614, determining whether Tr is less than the refrigeration shutdown temperature T-roff, that is, whether Tr≤T-roff is established;

[0094] Step S616, closing the refrigeration damper;

[0095] Step S618, determining whether Tc is less than or equal to the fresh-keeping refrigeration shutdown temperature T-coff, that is, whether Tc ≤ T-coff is established;

[0096] Step S620, close the fresh-keeping damper.

[0097] Step S622, executing refrigeration temperature control of the freezing compartment.

[0098] Figure 7 The present invention is a flow chart of a process of adjusting the fan in a control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to an embodiment of the present invention. The process of adjusting the fan includes:

[0099] Step S702, the fresh-keeping air door is opened, and the magnetic field fresh-keeping compartment is turned on to supply air for cooling;

[0100] Step S704, obtaining the temperature T-def of the evaporator;

[0101] Step S706, determining whether T-def is greater than or equal to a first temperature threshold T-d1, that is, whether T-def ≥ T-d1 is established;

[0102] Step S708, controlling the fan to be continuously turned on;

[0103] Step S710, determining whether T-def is less than a first temperature threshold T-d1 and greater than or equal to a preset second temperature threshold T-d2, that is, whether T-d1>T-def≥T-d2 holds;

[0104] Step S712, controlling the fan to start at intervals;

[0105] Step S714, determining whether T-def is less than a second temperature threshold T-d2, that is, whether T-d2>T-def holds;

[0106] Step S716, close the fresh-keeping damper and switch to cooling the refrigerating compartment and / or the freezing compartment.

[0107] The first temperature threshold T-d1 and the second temperature threshold T-d2 ​​can be set according to the temperature state of the normal operation of the evaporator and the storage requirements of the magnetic field preservation device. In a specific embodiment, for example, T-d1 can be set to -15 degrees Celsius and T-d2 ​​can be set to -20 degrees Celsius. The fan interval can be set to on for 1 minute and off for 1 minute.

[0108] The process of adjusting the fan can effectively prevent the refrigeration air supply temperature of the magnetic field preservation room from being too low, thereby avoiding the storage objects from being frozen, thereby improving the quality of preservation storage.

[0109] So far, the technical solution of the present invention has been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to understand that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can split and combine the technical solutions in the above embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present invention will fall within the protection scope of the present invention.

Claims

1. A control method for a refrigerator provided with a magnetic field fresh-keeping compartment, wherein: The refrigerator comprises a box body and a refrigeration duct arranged in the box body, a freezing compartment and a magnetic field preservation compartment are defined in the box body, the refrigeration duct extends from the freezing compartment to the magnetic field preservation compartment, and a preservation air door is arranged at a position leading to the magnetic field preservation compartment; an evaporator and a fan are arranged inside the part of the refrigeration duct located in the freezing compartment, the fan is used to promote the formation of a refrigeration air flow that flows through the evaporator and is supplied to the freezing compartment and / or the magnetic field preservation compartment, a refrigeration compartment is also defined in the box body, the refrigeration duct is further configured to extend from the freezing compartment to the refrigeration compartment, and a refrigeration air door is arranged at the part of the refrigeration duct leading to the refrigeration compartment, and the control method comprises: After the refrigerator starts refrigeration, obtaining the temperature of the magnetic field preservation compartment; Controlling the opening and closing of the fresh-keeping damper according to the temperature of the magnetic field fresh-keeping compartment; When the fresh-keeping air door is in an open state, obtaining the temperature of the evaporator; controlling the operation mode of the fan according to the temperature of the evaporator; and The step of controlling the opening and closing of the fresh-keeping air door according to the temperature of the magnetic field fresh-keeping compartment comprises: obtaining the cooling speed of the magnetic field fresh-keeping compartment and the cooling speed of the refrigerating compartment when both the fresh-keeping air door and the refrigerating air door are in an open state; When the ratio of the cooling speed of the magnetic field fresh-keeping compartment to the cooling speed of the refrigerating compartment exceeds a set threshold, the fresh-keeping damper is controlled to be opened at intervals.

2. The control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to claim 1, wherein: The step of controlling the operation mode of the fan according to the temperature of the evaporator comprises: Determining whether the temperature of the evaporator is greater than or equal to a preset first temperature threshold; If so, controlling the fan to remain on; Determining whether the temperature of the evaporator is less than a preset first temperature threshold and greater than or equal to a preset second temperature threshold; If so, control the fan to be turned on at intervals.

3. The control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to claim 2, wherein: After the step of controlling the operation mode of the fan according to the temperature of the evaporator, the method further includes: When the temperature of the evaporator is lower than the second temperature threshold, the fresh-keeping damper is closed, and the fan is controlled to be continuously turned on.

4. The control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to claim 2, wherein: The start-stop ratio of the fan decreases accordingly as the temperature of the evaporator decreases.

5. The control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to claim 1, wherein: The control method further comprises, after the refrigerator starts refrigeration: Obtaining the temperature of the refrigerated compartment; The opening and closing of the refrigeration damper is controlled according to the temperature of the refrigeration compartment.

6. The control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to claim 5, wherein The step of controlling the opening and closing of the fresh-keeping damper according to the temperature of the magnetic field fresh-keeping compartment comprises: When the temperature of the magnetic field fresh-keeping compartment is greater than or equal to the preset fresh-keeping refrigeration start-up temperature, the fresh-keeping damper is controlled to open; And when the temperature of the magnetic field fresh-keeping compartment is less than or equal to the preset fresh-keeping refrigeration shutdown temperature, the fresh-keeping damper is controlled to close; The step of controlling the opening and closing of the refrigeration damper according to the temperature of the refrigeration compartment comprises: controlling the refrigeration damper to open when the temperature of the refrigeration compartment is greater than or equal to a preset refrigeration start-up temperature; And when the temperature of the refrigerated compartment is less than or equal to the preset refrigeration and cooling shutdown temperature, the refrigeration damper is controlled to close.

7. The control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to claim 6, wherein The start-stop ratio of the fresh-keeping air door decreases accordingly as the ratio of the cooling rate of the magnetic field fresh-keeping compartment to the cooling rate of the refrigerating compartment increases.

8. The control method of a refrigerator provided with a magnetic field fresh-keeping compartment according to claim 5, wherein The opening of the fresh-keeping air door is adjustable, and when the fresh-keeping air door and the refrigeration air door are both in the open state, the cooling speed of the magnetic field fresh-keeping compartment and the cooling speed of the refrigeration compartment are obtained; When the ratio of the cooling rate of the magnetic field fresh-keeping compartment to the cooling rate of the refrigerating compartment exceeds a set threshold, the opening of the fresh-keeping air door is reduced, and the opening of the fresh-keeping air door is correspondingly reduced as the ratio of the cooling rate of the magnetic field fresh-keeping compartment to the cooling rate of the refrigerating compartment increases.

9. A refrigerator provided with a magnetic field preservation compartment, comprising a box body and a refrigeration air duct provided in the box body, wherein: The box body at least defines a freezing compartment and a magnetic field preservation compartment. The refrigeration air duct extends from the freezing compartment to the magnetic field preservation compartment, and a preservation air door is provided at the position leading to the magnetic field preservation compartment; An evaporator and a fan are arranged inside the part of the refrigeration air duct located in the freezing compartment, and the fan is used to promote the formation of a refrigeration airflow that flows through the evaporator and is supplied to the freezing compartment and / or the magnetic field preservation compartment; A controller comprises a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, a control method for a refrigerator provided with a magnetic field fresh-keeping compartment according to any one of claims 1 to 8 is implemented.

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