Method for controlling air humidity in refrigerator and refrigerator

Abstract

The invention belongs to the technical field of refrigerators, and particularly provides a control method for air humidity in a refrigerator and the refrigerator. The refrigerator comprises a freezing chamber, a cold storage chamber with a plurality of storage areas, a refrigeration chamber, an evaporator arranged in the refrigeration chamber, a fan used for driving air in the refrigeration chamber to flow to the freezing chamber and the cold storage chamber, and an air path distributor used for controlling the air to flow to the storage areas. The control method comprises the steps that in response to the situation that the freezing chamber is reduced to the freezing and refrigerating finishing temperature, a compressor of the refrigerator is controlled to stop running, and a draught fan is controlled to run; obtaining and comparing the temperatures of the plurality of storage areas so as to determine at least one storage area with the highest temperature, and recording the storage area as a target storage area; the air path distributor is controlled to be converted into the posture of guiding air from the refrigeration chamber to the target storage area; and in response to the fact that the current humidity of the freezing chamber reaches the preset humidity condition, the fan is controlled to stop running. According to the invention, the air humidity in the freezing chamber can be adjusted.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigerators, and specifically provides a method for controlling air humidity in a refrigerator and a refrigerator. Background Art

[0002] Existing air-cooled refrigerators generally have a freezing compartment and a refrigerating compartment, and an evaporator is arranged in the refrigerating compartment. When the refrigerator is working, the evaporator cools the air in the refrigerating compartment to form cold air. The fan in the refrigerator drives the cold air to flow to the freezing compartment, and forces the air in the freezing compartment to flow to the refrigerating compartment. In this reciprocating cycle, the refrigerator realizes the refrigeration and temperature reduction of the freezing compartment.

[0003] However, since the freezer is used to freeze food, its temperature is relatively low, which makes the temperature of the evaporator that provides cooling capacity even lower. This also causes the moisture in the air to condense and adhere to the evaporator when the air flows through the evaporator, making the air dry; which in turn causes the air humidity in the freezer to be relatively low. As a result, the food in the freezer loses more moisture, affecting the preservation effect of the freezer on the food inside, making the food taste worse, and causing nutrient loss.

[0004] In order to overcome the above problems, the prior art generally reduces the operating frequency of the compressor, or heats the evaporator through a heating device to increase the temperature of the evaporator, so that the frost on the evaporator is transformed into water vapor by sublimation and enters the freezer compartment, thereby achieving the purpose of increasing the air humidity in the freezer compartment. At the same time, the frost on the evaporator cannot melt during this process, otherwise it will cause the evaporator to freeze, affecting the subsequent refrigeration effect of the evaporator.

[0005] However, in the above-mentioned prior art, the sublimation rate of frost is relatively slow, and the effect of improving the air humidity in the freezer room is relatively poor, resulting in the air humidity in the freezer room remaining at a relatively low level for a long time. Summary of the invention

[0006] An object of the present invention is to solve the problem that the freezing compartment of the existing refrigerator has a poor preservation effect on food due to the low air humidity in the freezing compartment.

[0007] Another object of the present invention is to ensure the uniformity of the indoor temperature of the refrigerated room.

[0008] To achieve the above object, the present invention provides a method for controlling air humidity in a refrigerator in a first aspect, the refrigerator comprising a freezer compartment, a cold storage compartment having a plurality of storage areas, a refrigeration compartment, an evaporator arranged in the refrigeration compartment, a fan for driving air in the refrigeration compartment to flow toward the freezer compartment and the cold storage compartment, and an air path distributor for controlling the air to flow toward the plurality of storage areas, the control method comprising:

[0009] In response to the freezing compartment being lowered to a freezing and refrigeration end temperature, controlling the compressor of the refrigerator to stop running, and controlling the fan to run;

[0010] Acquiring and comparing the temperatures of the plurality of storage areas to determine at least one storage area with the highest temperature, and recording it as a target storage area;

[0011] Controlling the air path distributor to change to a posture of directing air from the refrigeration compartment to the target storage area;

[0012] In response to the current humidity of the freezing compartment reaching a preset humidity condition, the fan is controlled to stop running.

[0013] Optionally, in response to the freezing compartment being lowered to the freezing and refrigeration end temperature, the step of controlling the compressor of the refrigerator to stop running and controlling the fan to run comprises:

[0014] In response to the freezing compartment being lowered to a freezing and refrigeration end temperature and the refrigeration compartment being lowered to a refrigeration and refrigeration end temperature, the compressor of the refrigerator is controlled to stop operating, and the fan is controlled to operate.

[0015] Optionally, in response to the current humidity of the freezing compartment reaching a preset humidity condition, the step of controlling the fan to stop running comprises:

[0016] In response to the current humidity of the freezing compartment rising to a preset humidity value, the fan is controlled to stop running.

[0017] Optionally, in response to the current humidity of the freezing compartment reaching a preset humidity condition, the step of controlling the fan to stop running comprises:

[0018] In response to the fan continuing to operate for a preset time period after the compressor stops, the fan is controlled to stop operating.

[0019] Optionally, the refrigerator further comprises a heating device for heating the air flowing toward the refrigerating compartment;

[0020] The control method further comprises:

[0021] Comparing the current temperature of the target storage area with the preset refrigeration temperature;

[0022] In response to the current temperature being less than or equal to the preset refrigeration temperature, the heating device is controlled to operate.

[0023] Optionally, the step of controlling the heating device to operate includes: controlling the heating device to operate according to the following heating power P:

[0024] P=C·M·(T 藏 -T 蒸 -4)

[0025] Wherein, C is the specific heat capacity of air; M is the air supply volume of the refrigerated compartment and is positively correlated with the speed of the fan; T 藏 is the current temperature of the refrigerated compartment; T 蒸 is the current temperature of the evaporator.

[0026] In a second aspect, the present invention provides a refrigerator, comprising:

[0027] A box body, defining a freezer compartment, a refrigeration compartment and a refrigerator compartment, wherein the refrigeration compartment is divided into a plurality of storage areas;

[0028] An evaporator is arranged in the refrigeration room;

[0029] A fan, used for driving the air in the refrigeration compartment to flow toward the freezing compartment and the cold storage compartment;

[0030] an air path distributor, used for controlling the air flow to the plurality of storage areas;

[0031] 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, the control method described in any one of the first aspects can be implemented.

[0032] Optionally, the box body is further defined as a main refrigeration air supply channel and multiple storage air supply channels, each of the storage air supply channels is respectively connected to the main refrigeration air supply channel, one end of the main refrigeration air supply channel away from the storage air supply channel is connected to the refrigeration compartment, and one end of each storage air supply channel away from the main refrigeration air supply channel is respectively connected to one of the storage areas; the air path distributor is arranged at the junction of the main refrigeration air supply channel and the multiple storage air supply channels.

[0033] Optionally, the box body further defines a refrigeration return air channel connected to the refrigeration compartment, and at least one refrigeration return air port is respectively provided between each storage area and the refrigeration return air channel.

[0034] Optionally, the refrigerator further comprises a refrigeration damper, and the refrigeration damper is used to block the air flowing from the refrigeration compartment to the air path distributor.

[0035] Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solution of the present invention, when the freezer compartment is lowered to the freezing and refrigeration end temperature, the compressor of the refrigerator is controlled to stop running, and the fan is controlled to run; the temperatures of multiple storage areas are obtained and compared to determine at least one storage area with the highest temperature, and recorded as the target storage area; the air path distributor is controlled to change to a posture that directs air from the refrigeration compartment to the target storage area, so that the air can circulate between the target storage area and the refrigeration compartment, allowing air with a higher temperature to enter the refrigeration compartment.

[0036] Since the temperature of the refrigerating compartment in the existing refrigerator is generally set between 3°C and 10°C, the temperature of the freezing compartment and the freezer compartment is generally much lower than 0°C (for example, between -16°C and -18°C), and the moisture content in the air is positively correlated with the temperature, that is, the higher the temperature, the more moisture content in the air. Therefore, when the air in the target storage area enters the refrigerating compartment, the air with a higher moisture content will enter the refrigerating compartment, thereby increasing the moisture content in the air in the refrigerating compartment. Driven by the fan, the air with a higher moisture content in the refrigerating compartment will enter the freezer compartment, thereby increasing the air humidity in the freezer compartment. The present invention also controls the fan to stop running when the current humidity of the freezer compartment reaches the preset humidity condition, so as to prevent the air humidity in the freezer compartment from being too high. Therefore, the present invention realizes the regulation of the air humidity in the freezer compartment, and thus improves the preservation effect of the freezer compartment on food.

[0037] At the same time, the present invention obtains and compares the temperatures of multiple storage areas to determine at least one storage area with the highest temperature, and records it as the target storage area; then controls the air path distributor to change to a posture that guides the air from the refrigeration compartment to the target storage area, so that only the storage area with a higher temperature in the cold storage compartment participates in the air circulation, so that the refrigerator can reduce the temperature in the storage area, thereby making the temperature distribution in the cold storage compartment more uniform.

[0038] Other beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand the improved purposes, features and advantages of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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.

[0040] In the attached figure:

[0041] Figure 1 is a schematic block diagram of a refrigerator provided by the present invention;

[0042] Figure 2 It is a schematic cross-sectional effect diagram of a refrigerator provided by the present invention;

[0043] Figure 3 is a schematic diagram of a front view of another refrigerator provided by the present invention;

[0044] Figure 4 yes Figure 3 a first isometric view of the central air duct assembly;

[0045] Figure 5 yes Figure 3 A second isometric view of the center air duct assembly;

[0046] Figure 6 is a flow chart of the main steps of a method for controlling air humidity in a refrigerator in some embodiments of the present invention;

[0047] Figure 7 is a flow chart of steps for stopping humidification of a freezing compartment in some embodiments of the present invention;

[0048] Figure 8 is a partial step flow chart of a method for controlling air humidity in a refrigerator in other embodiments of the present invention;

[0049] Fig. 9 It is a schematic block diagram of some components of the refrigerator in the present invention. DETAILED DESCRIPTION

[0050] 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.

[0051] 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", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] Furthermore, 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.

[0053] In addition, it should be noted that in the description of the present invention, the terms "cold" and "heat" are two descriptions of the same physical state. That is, the higher the "cold" of a certain target object (such as an evaporator, air, condenser, etc.), the lower the "heat" it has, and the lower the "cold" it has, the higher the "heat" it has. A certain target object will release "heat" while absorbing "cold", and will absorb "heat" while releasing "cold". A certain target object stores "cold" or "heat" to keep the current temperature of the target object. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, that is, a certain target object (such as an evaporator) will absorb heat while cooling.

[0054] Finally, it should be noted that in the description of the present invention, each functional module can be a physical module composed of multiple structures, components or electronic components, or a virtual module composed of multiple programs; each functional module can be a module that exists independently of each other, or a module divided according to the function of an integral module. Those skilled in the art should understand that, under the premise of being able to implement the technical solution described in the present invention, no matter how the composition, implementation and positional relationship of each functional module change, they will not deviate from the technical principle of the present invention, and therefore should fall within the protection scope of the present invention.

[0055] like Figure 1 As shown, in the present invention, the refrigerator 100 includes a cabinet 110 and a refrigeration system 120 arranged on the cabinet 110 , and the refrigeration system 120 is used to provide cold energy for the refrigerator 100 .

[0056] Continue reading Figure 1 In the present invention, the refrigeration system 120 includes a compressor 121, a condenser 122, a capillary tube 123 and an evaporator 124 which are connected end to end in sequence to form a loop, so that the refrigerant circulates along the following path: compressor 121 → condenser 122 → capillary tube 123 → evaporator 124 → compressor 121.

[0057] Specifically, when the refrigerant flows through the compressor 121, it is compressed by the compressor 121 into a high temperature and high pressure state (liquid state or gas-liquid mixed state). When the refrigerant flows through the condenser 122, the heat is dissipated by the condenser 122 and the temperature is reduced to a low temperature and high pressure state (liquid state or gas-liquid mixed state). When the refrigerant flows through the capillary 123, it is throttled and reduced in pressure by the capillary 123 to a low temperature and low pressure state (liquid state or gas-liquid mixed state). When the refrigerant flows through the evaporator 124, it absorbs heat from the external environment through the evaporator 124 and heats up to a high temperature and low pressure state (gas state).

[0058] It should be noted that the aforementioned states of the refrigerant in the compressor 121, the condenser 122, the capillary tube 123, and the evaporator 124, that is, the high temperature, low temperature, high pressure, and low pressure of the refrigerant, are the states of the refrigerant after it enters the corresponding components or flows out of the corresponding components compared to the states before it flows into the corresponding components.

[0059] In addition, those skilled in the art may also replace the capillary tube 123 with any other feasible pressure-reducing and throttling component, such as an electronic expansion valve, as needed.

[0060] It should be noted that, since the refrigerator 100 has various forms, those skilled in the art may also appropriately adjust the refrigeration system 120 according to the actual form of the refrigerator 100. For example, multiple evaporators 124 are arranged in series or in parallel to form a refrigeration module that works simultaneously.

[0061] like Figure 2 As shown, in some embodiments of the present invention, the cabinet 110 defines a freezing compartment 111 , a refrigerating compartment 112 and a cooling compartment 113 , and the freezing compartment 111 and the refrigerating compartment 112 are communicated with the cooling compartment 113 , respectively.

[0062] The refrigerating chamber 112 is divided into a plurality of storage areas 1121 , so that different food materials can be placed in different storage areas 1121 .

[0063] Continue reading Figure 2 In some embodiments of the present invention, the cabinet 110 further defines a main refrigeration air supply channel 1141 and a plurality of storage air supply channels 1142, and each storage air supply channel 1142 is respectively connected to the main refrigeration air supply channel 1141. One end of the main refrigeration air supply channel 1141 away from the storage air supply channel 1142 is connected to the refrigeration compartment 113, and one end of each storage air supply channel 1142 away from the main refrigeration air supply channel 1141 is respectively connected to a storage area 1121.

[0064] Continue reading Figure 2In some embodiments of the present invention, the cabinet 110 further defines a refrigerated return air passage 115 communicating with the refrigeration chamber 113 , and at least one refrigerated return air port 1151 is disposed between each storage area 1121 and the refrigerated return air passage 115 .

[0065] It is understood by those skilled in the art that the above structure of the cabinet 110 enables each storage area 1121 to circulate air between the refrigeration compartment 113 through its corresponding storage air supply channel 1142 and refrigeration return air port 1151, and to be refrigerated individually. Furthermore, by enabling each storage area 1121 to be refrigerated individually, the temperature distribution of the refrigeration compartment 112 is made more uniform. Compared with the prior art of indiscriminately refrigerating the refrigeration compartment 112, the present invention effectively avoids the accumulation of cold energy in the refrigeration compartment 112, which cannot be effectively and quickly transferred to the entire refrigeration compartment 112, resulting in some areas in the refrigeration compartment 112 being overcooled and some areas being hot.

[0066] Continue reading Figure 2 In some embodiments of the present invention, an evaporator 124 is arranged in the refrigeration compartment 113 to cool the air in the refrigeration compartment 113 through the evaporator 124 .

[0067] Continue reading Figure 2 In some embodiments of the present invention, the refrigerator 100 further includes a fan 140 , which is used to drive the air in the refrigeration compartment 113 to flow toward the freezing compartment 111 and the refrigeration compartment 112 .

[0068] The fan 140 may be any type of fan, such as a centrifugal fan, a cross-flow fan, an axial flow fan, etc.

[0069] Furthermore, the fan 140 can be Figure 2 As shown, it is arranged in the refrigeration compartment 113 , and can also be arranged in any other feasible position, for example, arranged in the main refrigeration air supply channel 1141 and a separate fan 140 is configured for the freezing compartment 111 at the same time.

[0070] Continue reading Figure 2 In some embodiments of the present invention, the refrigerator 100 further includes an air path distributor 151, which is disposed at the junction of the main refrigeration air supply channel 1141 and the plurality of storage air supply channels 1142. The air path distributor 151 is used to control the communication between the main refrigeration air supply channel 1141 and the plurality of storage air supply channels 1142, so as to control the air flow to the plurality of storage areas 1121.

[0071] The air path distributor 151 may be a separate component, such as the structure described in the publication / announcement number CN210625071U or CN108332481A.

[0072] Alternatively, the air path distributor 151 may also be a component composed of multiple components, for example, the air path distributor 151 includes multiple air doors. Each storage air supply channel 1142 corresponds to a air door, so as to open or cover one end of the storage air supply channel 1142 connected to the main refrigeration air supply channel 1141 through the air door.

[0073] Continue reading Figure 2 In some embodiments of the present invention, the refrigerator 100 further includes a refrigeration damper 152 , and the refrigeration damper 152 is used to block the air flowing from the refrigeration compartment 113 to the air path distributor 151 .

[0074] Further, the refrigeration damper 152 may be disposed upstream of the air path distributor 151 . That is, the refrigeration damper 152 may be disposed between the air path distributor 151 and the fan 140 .

[0075] Continue reading Figure 2 In some embodiments of the present invention, the refrigerator 100 further includes conventional components such as a door body 130 and a water receiving tray 160 disposed below the evaporator 124. Since conventional components of the refrigerator 100 are well known to those skilled in the art, they will not be described in detail herein.

[0076] Continue reading Figure 2 In some embodiments of the present invention, the refrigerator 100 may further include a heating device 170 for heating the air flowing toward the refrigerating compartment 112 .

[0077] Furthermore, the heating device 170 is disposed upstream of the air path distributor 151 to ensure that the heating device 170 can heat all the air flowing to each storage area 1121 .

[0078] Those skilled in the art will appreciate that by heating the air flowing toward the refrigerating compartment 112 through the heating device 170 , the temperature of the refrigerating compartment 112 can be prevented from being too low.

[0079] It should be noted that Figure 2 The relative positional relationship and the connection relationship of the freezing compartment 111, the refrigerating compartment 112 and the cooling compartment 113 are only schematically shown, and the relationship between the fan 140, the air path distributor 151, the refrigerating damper 152 and the heating device 170 and the cabinet 110 are schematically shown. On the premise of achieving the above purpose, those skilled in the art can also appropriately optimize the position or specific form of the above structures or components as needed.

[0080] For example, the refrigeration damper 152 is disposed at the outlet of the refrigeration return air passage 115 .

[0081] For example, in Figure 3 In another refrigerator 100 shown, the refrigerator 100 may further include another compartment (not marked in the figure) located between the freezer compartment 111 and the refrigeration compartment 112. The other compartment may be any feasible compartment, such as a freezer compartment, a refrigeration compartment or a variable temperature compartment.

[0082] like Figures 3 to 5 As shown, the refrigerator 100 may further include an air duct assembly 114 , and the air duct assembly 114 defines a main refrigeration air supply channel 1141 and a storage air supply channel 1142 .

[0083] like Figure 4 As shown, the air duct assembly 114 is provided with a refrigerated air outlet 1143 located at the front side thereof, so that each storage air supply channel 1142 is connected to the corresponding storage area 1121 through the refrigerated air outlet 1143. In other words, the refrigerated air outlet 1143 is formed on the side wall between the storage air supply channel 1142 and the storage area 1121.

[0084] Continue reading Figure 4 The refrigerator 100 also includes a plurality of temperature sensors 153 disposed on the front side of the air duct assembly 114 , so that each storage area 1121 corresponds to a temperature sensor 153 , thereby detecting the temperature of the corresponding storage area 1121 through the temperature sensor 153 .

[0085] The method for controlling the air humidity in a refrigerator of the present invention will be described in detail below in conjunction with the refrigerator 100 described above.

[0086] like Figure 6 As shown, in some embodiments of the present invention, the method for controlling the air humidity in a refrigerator includes:

[0087] Step S110, in response to the freezing compartment 111 being lowered to the freezing and refrigeration end temperature, the compressor 121 of the refrigerator 100 is controlled to stop running, and the fan 140 is controlled to run.

[0088] The freezing and refrigeration end temperature is the temperature at which the freezing chamber 111 ends refrigeration after refrigeration begins, and it can be any feasible value, such as -16°C, -18°C, -21°C, -23°C, etc.

[0089] Step S120 , obtaining and comparing the temperatures of the plurality of storage areas 1121 to determine at least one storage area 1121 with the highest temperature, and recording it as a target storage area 1121 .

[0090] In step S120, if there is only one storage area 1121 with the highest temperature, the target storage area 1121 is one; if there are at least two storage areas 1121 with the highest temperature (that is, the temperatures of the at least two storage areas 1121 are equal), the target storage areas 1121 are at least two.

[0091] Step S130 , controlling the air path distributor 151 to change to a posture of directing the air from the refrigerating compartment 113 to the target storage area 1121 , so that air circulates between the target storage area 1121 and the refrigerating compartment 113 under the action of the fan 140 .

[0092] At the same time, since the communication between the refrigerating compartment 113 and the freezing compartment 111 is not interrupted, air also flows between the refrigerating compartment 113 and the freezing compartment 111 .

[0093] Step S140 , in response to the current humidity of the freezing chamber 111 reaching a preset humidity condition, the fan 140 is controlled to stop running.

[0094] Further, step S110 may include: in response to the freezing compartment 111 being lowered to the freezing and refrigerating end temperature and the refrigerating compartment 112 being lowered to the refrigerating and refrigerating end temperature, controlling the compressor 121 of the refrigerator 100 to stop operating and controlling the fan 140 to operate.

[0095] The refrigeration end temperature is the temperature at which the refrigeration of the refrigeration compartment 112 ends after the refrigeration starts, and it can be any feasible value, such as 0° C., 1° C., 3° ​​C., etc.

[0096] That is, when the refrigerating compartment 112 and the freezing compartment 111 are both cooled, the compressor 121 can be controlled to stop running, the fan 140 can be controlled to run, and the air path distributor 151 can be controlled to connect the target storage area 1121 and the refrigerating compartment 113.

[0097] Those skilled in the art can understand that when the freezing compartment 111 is lowered to the freezing and refrigeration termination temperature and the refrigerating compartment 112 is lowered to the refrigeration and refrigeration termination temperature, the compressor 121, the fan 140 and the air path distributor 151 are controlled to operate in the above manner, which can effectively avoid the evaporator 124 from having insufficient cooling capacity to lower the temperature of the refrigerating compartment 112, and avoid the evaporator 124 from having insufficient cooling capacity, resulting in a temperature rise in the freezing compartment 111.

[0098] like Figure 7 As shown, in some embodiments of the present invention, step S140 may also include step S141 or step S142.

[0099] Wherein, step S141 includes: in response to the current humidity of the freezing chamber 111 rising to a preset humidity value, controlling the fan 140 to stop running.

[0100] The preset humidity condition is the optimal humidity condition for the freezing compartment 111 to preserve the food therein, and its specific value may be selected from 80% to 100%, such as 80%, 85%, 92%, 98%, 100%, etc.

[0101] Wherein, step S142 includes: in response to the fan 140 continuously running for a preset time period after the compressor 121 stops, controlling the fan 140 to stop running.

[0102] When the fan 140 continues to run for a preset time after the compressor 121 stops, it can be considered that the current humidity of the freezing chamber 111 has risen to the preset humidity value. To this end, the preset time can be selected from 1 second to 600 seconds, such as 30 seconds, 45 seconds, 60 seconds, 80 seconds, 120 seconds, 300 seconds, 600 seconds, etc. The corresponding relationship between the preset time and the preset humidity value time can be determined by a person skilled in the art through multiple experiments.

[0103] Based on the above description, it can be understood by those skilled in the art that, since the temperature of the refrigerating compartment 112 in the existing refrigerator 100 is generally set between 3°C and 10°C, the temperature of the freezing compartment 111 and the freezing compartment 111 is generally much lower than 0°C (for example, between -16°C and -18°C), and the moisture content in the air is positively correlated with the temperature, that is, the higher the temperature, the more moisture content in the air. Therefore, when the air in the target storage area 1121 enters the refrigerating compartment 113, the air with a higher moisture content will enter the refrigerating compartment 113, thereby increasing the moisture content in the air in the refrigerating compartment 113. Driven by the fan 140, the air with a higher moisture content in the refrigerating compartment 113 will enter the freezing compartment 111, thereby increasing the air humidity in the freezing compartment 111. The present invention also controls the fan 140 to stop running when the current humidity of the freezing compartment 111 reaches the preset humidity condition, so as to prevent the air humidity in the freezing compartment 111 from being too high. Therefore, the present invention achieves the regulation of the air humidity in the freezing compartment 111, and thus improves the preservation effect of the freezing compartment 111 on food.

[0104] At the same time, the present invention obtains and compares the temperatures of multiple storage areas 1121 to determine at least one storage area 1121 with the highest temperature, and records it as the target storage area 1121; then controls the air path distributor 151 to change to a posture of directing the air from the refrigeration compartment 113 to the target storage area 1121, so that only the storage area 1121 with a higher temperature in the refrigeration compartment 112 participates in the air circulation, so that the refrigerator 100 can reduce the temperature in the storage area 1121, thereby making the temperature distribution in the refrigeration compartment 112 more uniform.

[0105] Furthermore, the present invention is particularly applicable to a refrigerator 100 in which the refrigerating compartment 112 has a plurality of storage areas 1121 , for example, is particularly applicable to a refrigerator 100 in which the refrigerating compartment 112 has a plurality of storage spaces.

[0106] It should be noted that the above-mentioned embodiment of the present invention is only a basic embodiment of the present invention. In other embodiments of the present invention, those skilled in the art may also adjust, optimize and configure the schemes and steps in the above-mentioned embodiments as needed to achieve further technical effects. Other embodiments of the present invention different from the above-mentioned embodiments will be described in conjunction with the accompanying drawings hereinafter. Of course, those skilled in the art may also make appropriate modifications to the execution order, operating conditions and quantity of the steps in the embodiments to be described hereinafter according to actual needs. The modified embodiments do not deviate from the technical concept and / or technical principle of the present invention and should still fall within the scope of protection of the present invention.

[0107] For example, compared with some of the embodiments described above, Figure 8 In some other embodiments shown, the method for controlling the air humidity in the refrigerator further includes, after step S130:

[0108] Step S210, comparing the current temperature of the target storage area 1121 with the preset refrigeration temperature.

[0109] The preset refrigeration temperature may be a critical temperature at which the food in the refrigeration compartment 112 begins to freeze, such as -2°C, -1°C, 0°C, etc.; or a temperature higher than the critical temperature but affecting the taste of the food, such as 1°C, 2°C, 3°C, 4°C, etc. Preferably, the preset refrigeration temperature is selected from any value between -2°C and 3°C.

[0110] Step S220, in response to the current temperature being less than or equal to the preset refrigeration temperature, controlling the heating device 170 to operate.

[0111] The heating device 170430 is controlled to operate according to the following heating power P:

[0112] P=C·M·(T 藏 -T 蒸 -4)

[0113] Wherein, C is the specific heat capacity of air; M is the air supply volume of the refrigerated compartment 112 and is positively correlated with the rotation speed of the fan 140; T 藏 is the current temperature of the refrigerating compartment 112; T 蒸 is the current temperature of the evaporator 124 .

[0114] The corresponding relationship between M and the rotation speed of the fan 140 can be determined through multiple tests. This is a common technical means used by those skilled in the art, so it will not be explained in detail here.

[0115] Compared with some embodiments described above, Figure 8 Some other embodiments shown determine the heating power of the heating device 170 by the above formula, so that the heating power of the heating device 170 can be automatically adjusted according to the temperature of the evaporator 124, the current temperature of the refrigerating compartment 112 and the rotation speed of the fan 140, thereby preventing the temperature of the refrigerating compartment 112 from being too low and preventing the temperature of the refrigerating compartment 112 from rising.

[0116] Furthermore, if Fig. 9 As shown, in the present invention, the refrigerator 100 may further include a controller 180, which includes a memory 181 and a processor 182, the memory 181 stores a machine executable program 1811, and when the machine executable program 1811 is executed by the processor 182, it can implement the control method described in any of the above embodiments.

[0117] The memory 181 may include a memory and a non-volatile memory, and provide execution instructions and data to the processor 182. For example, the memory may be a high-speed random access memory (RAM), and the non-volatile memory may be at least one disk storage.

[0118] In this embodiment, the processor 182 is an integrated circuit chip that has the ability to process signals. The processor 182 can be a general-purpose processor, such as a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, microprocessors, and any other conventional processors.

[0119] 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.

[0120] Finally, it should be noted that the refrigerator 100 of the present invention is a refrigerator 100 in a broad sense, which not only includes the so-called refrigerator 100 in a narrow sense, but also includes fresh-keeping equipment with refrigeration and / or freezing functions, such as refrigerators, freezers, etc.

[0121] In the present invention, the term "communication" means fluid communication, so as to allow fluid (such as air, liquid) to flow between two connected objects. And the "communication" can be to allow the fluid to flow between the two connected objects without leakage, or to allow the fluid to flow between the two connected objects with a little leakage.

Claims

1. A method for controlling air humidity in a refrigerator, the refrigerator comprising a freezer compartment, a cold storage compartment having a plurality of storage areas, a refrigerating compartment, an evaporator arranged in the refrigerating compartment, a fan for driving air in the refrigerating compartment to flow toward the freezer compartment and the cold storage compartment, and an air path distributor for controlling the air to flow toward the plurality of storage areas, the control method comprising: In response to the freezing compartment being lowered to a freezing and refrigeration end temperature, controlling the compressor of the refrigerator to stop running, and controlling the fan to run; Acquiring and comparing the temperatures of the plurality of storage areas to determine at least one storage area with the highest temperature, and recording it as a target storage area; Controlling the air path distributor to change to a posture of directing air from the refrigeration compartment to the target storage area; In response to the current humidity of the freezing compartment reaching a preset humidity condition, the fan is controlled to stop running.

2. The control method according to claim 1, wherein: In response to the freezing compartment being lowered to the freezing and refrigeration end temperature, the steps of controlling the compressor of the refrigerator to stop running and controlling the fan to run include: In response to the freezing compartment being lowered to a freezing and refrigeration end temperature and the refrigeration compartment being lowered to a refrigeration and refrigeration end temperature, the compressor of the refrigerator is controlled to stop operating, and the fan is controlled to operate.

3. The control method according to claim 1, wherein: The step of controlling the fan to stop running in response to the current humidity of the freezing compartment reaching a preset humidity condition comprises: In response to the current humidity of the freezing compartment rising to a preset humidity value, the fan is controlled to stop running.

4. The control method according to claim 1, wherein: The step of controlling the fan to stop running in response to the current humidity of the freezing compartment reaching a preset humidity condition comprises: In response to the fan continuing to operate for a preset time period after the compressor stops, the fan is controlled to stop operating.

5. The control method according to any one of claims 1 to 4, wherein: The refrigerator further comprises a heating device for heating air flowing toward the refrigerating compartment; The control method further comprises: Comparing the current temperature of the target storage area with the preset refrigeration temperature; In response to the current temperature being less than or equal to the preset refrigeration temperature, the heating device is controlled to operate.

6. The control method according to claim 5, wherein: The step of controlling the operation of the heating device comprises: controlling the heating device to operate according to the following heating power P, P=C·M·(T 藏 -T 蒸 -4) Wherein, C is the specific heat capacity of air; M is the air supply volume of the refrigerated compartment and is positively correlated with the speed of the fan; T 藏 is the current temperature of the refrigerated compartment; T 蒸 is the current temperature of the evaporator.

7. A refrigerator, comprising: A box body, defining a freezer compartment, a refrigeration compartment and a refrigerator compartment, wherein the refrigeration compartment is divided into a plurality of storage areas; An evaporator is arranged in the refrigeration room; A fan, used for driving the air in the refrigeration compartment to flow toward the freezing compartment and the cold storage compartment; an air path distributor, used for controlling the air flow to the plurality of storage areas; 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, the control method according to any one of claims 1 to 6 can be implemented.

8. The refrigerator according to claim 7, wherein: The box body further defines a main refrigeration air supply channel and a plurality of storage air supply channels, each of the storage air supply channels is respectively connected to the main refrigeration air supply channel, one end of the main refrigeration air supply channel away from the storage air supply channel is connected to the refrigeration compartment, and one end of each storage air supply channel away from the main refrigeration air supply channel is respectively connected to one of the storage areas; The air path distributor is arranged at the junction of the main refrigeration air supply channel and the plurality of storage air supply channels.

9. The refrigerator according to claim 8, wherein: The box body is also defined with a refrigeration return air channel connected with the refrigeration compartment, and at least one refrigeration return air port is respectively arranged between each storage area and the refrigeration return air channel.

10. The refrigerator according to claim 7, further comprising a refrigeration damper, wherein the refrigeration damper is used to block air flowing from the refrigeration compartment to the air path distributor.

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