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, 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 door assembly used for controlling the flow direction of the air. The control method comprises the steps that in response to the fact that a freezing chamber is reduced to the freezing and refrigerating finishing temperature, a compressor of the refrigerator is controlled to stop running, a fan is controlled to run, and an air door assembly is controlled to communicate a refrigerating chamber with the refrigerating chamber, so that air circulates between the refrigerating chamber and the refrigerating chamber; in response to the fact that the first preset condition is met, the air door assembly is controlled to communicate with the freezing chamber and the refrigerating chamber, so that air circulates between the freezing chamber and the refrigerating chamber; and responding to the second preset condition, and controlling the fan to stop. According to the refrigerator, 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] A further object of the present invention is to prevent the temperature of the refrigerating compartment from being too low during the process of increasing the air humidity in the freezing compartment.

[0008] A further object of the present invention is to determine the heating power of a heating device when heating air flowing to a refrigerated compartment.

[0009] 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 freezing compartment, a cold storage compartment, a refrigerating compartment, an evaporator arranged in the refrigerating compartment, a fan for driving air in the refrigerating compartment to flow toward the freezing compartment and the cold storage compartment, and a damper assembly for controlling the air flow direction, the control method comprising:

[0010] In response to the freezing compartment being lowered to the freezing and refrigeration end temperature, controlling the compressor of the refrigerator to stop running, controlling the fan to run, and controlling the damper assembly to connect the refrigerating compartment and the refrigerating compartment so that air circulates between the refrigerating compartment and the refrigerating compartment;

[0011] In response to satisfying a first preset condition, controlling the damper assembly to connect the freezing compartment and the refrigerating compartment so that air circulates between the freezing compartment and the refrigerating compartment;

[0012] In response to satisfying a second preset condition, the fan is controlled to stop.

[0013] Optionally, the first preset condition is that the damper assembly is connected to the cold storage compartment and the refrigeration compartment for a first time or the temperature in the refrigeration compartment reaches a preset temperature, so that the frost on the evaporator melts.

[0014] Optionally, the second preset condition is that the duration of the damper assembly connecting the freezing compartment and the refrigeration compartment reaches a second duration or the air humidity in the freezing compartment reaches a preset humidity value.

[0015] Optionally, in response to satisfying a first preset condition, the step of controlling the damper assembly to connect the freezing compartment and the refrigerating compartment so that air circulates between the freezing compartment and the refrigerating compartment comprises:

[0016] In response to satisfying the first preset condition, the damper assembly is controlled to connect the freezing compartment and the refrigerating compartment and to connect the refrigerating compartment and the refrigerating compartment, so that air circulates between the freezing compartment and the refrigerating compartment and the refrigerating compartment.

[0017] Optionally, 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, controlling the fan to run, and controlling the damper assembly to connect the refrigerating compartment and the refrigerating compartment include:

[0018] In response to the freezing compartment being lowered to the freezing and refrigeration end temperature and the refrigerating compartment being lowered to the refrigeration and refrigeration end temperature, the compressor of the refrigerator is controlled to stop running, the fan is controlled to run, and the damper assembly is controlled to connect the refrigerating compartment and the refrigerating compartment.

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

[0020] The control method further includes: in response to the damper assembly connecting the cold storage compartment and the refrigeration compartment, controlling the heating device to operate.

[0021] Optionally, the step of controlling the heating device to operate includes: controlling the heating device to operate according to the following heating power P:

[0022] P=C·M·(T 藏 -T 蒸 -4)

[0023] 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.

[0024] In a second aspect, the present invention provides a refrigerator, comprising:

[0025] The box body is defined as a freezer compartment, a refrigeration compartment and a refrigerator compartment;

[0026] An evaporator is arranged in the refrigeration room;

[0027] A fan, used for driving the air in the refrigeration compartment to flow toward the freezing compartment and the cold storage compartment;

[0028] A damper assembly, used to control the opening and closing of the refrigerating compartment, the freezing compartment and the refrigerating compartment;

[0029] 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.

[0030] Optionally, the damper assembly includes a first damper and a second damper, wherein the first damper is used to control the connection and disconnection between the refrigerating compartment and the freezing compartment, and the second damper is used to control the connection and disconnection between the freezing compartment and the freezing compartment.

[0031] Optionally, the refrigerator further comprises a heating device for heating the air flowing toward the refrigerating compartment, and when the machine executable program is executed by the processor, it is also possible to implement any one of the control methods related thereto in the first aspect.

[0032] Based on the above description, it can be understood by those skilled in the art that the preservation temperature of the refrigerator compartment of an existing refrigerator (i.e., the temperature of the air in the refrigerator compartment) is generally between 3°C and 10°C, which is higher than 0°C, and solid water can be melted. When the freezing compartment is lowered to the freezing and refrigeration end temperature, the present invention controls the compressor of the refrigerator to stop running, controls the fan to run, and controls the damper assembly to connect the refrigerator compartment and the refrigeration compartment, so that air circulates between the refrigerator compartment and the refrigeration compartment, thereby allowing the air in the refrigerator compartment above 0°C to continuously enter the refrigeration compartment. Since the compressor stops working, the frost on the evaporator loses its cold source, and will continue to gain heat under the continuous blowing of the air from the refrigerator compartment until it melts into liquid water.

[0033] Furthermore, when the first preset condition is met, the air door assembly is controlled to connect the freezing compartment and the refrigerating compartment, so that air circulates between the freezing compartment and the refrigerating compartment, and then when the air flows through the evaporator, it can promote the evaporation of liquid water on the evaporator, thereby increasing the humidity of the air. After the air with higher humidity enters the freezing compartment, the humidity of the air in the freezing compartment will be increased accordingly, so that the refrigerator of the present invention increases the humidity of the air in the freezing compartment and improves the preservation effect of the freezing compartment on food.

[0034] Furthermore, by configuring a heating device for heating the air flowing to the refrigerating compartment, and controlling the heating device to operate when the damper assembly connects the refrigerating compartment and the cooling compartment, the air flowing to the refrigerating compartment is heated, thereby preventing the temperature of the refrigerating compartment from being too low.

[0035] Going further, through the formula - P = C·M·(T 藏 -T 蒸 -4) to determine the heating power of the heating device, so that the heating power of the heating device can be automatically adjusted according to the temperature of the evaporator, the current temperature of the refrigerated compartment and the speed of the fan, while avoiding the refrigerated compartment from having a too low temperature and a temperature rise.

[0036] 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

[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 components or parts indicated by the same figure mark in different drawings are the same or similar; the drawings of the present invention are not necessarily drawn to scale.

[0038] In the attached figure:

[0039] Figure 1 This is a schematic diagram of the effect of a refrigerator provided by the present invention;

[0040] Figure 2 is a schematic diagram of a refrigeration system provided by the present invention;

[0041] Figure 3 yes Figure 1 A cross-sectional view of the middle refrigerator along the AA direction;

[0042] Figure 4 yes Figure 1 A cross-sectional view of the middle refrigerator along the BB direction;

[0043] Figure 5 yes Figure 1 Cross-sectional view of the middle refrigerator along the CC direction (the refrigerating compartment is connected to the cooling compartment);

[0044] Figure 6 yes Figure 1 Cross-sectional view of the middle refrigerator along the CC direction (the freezing compartment is connected to the refrigeration compartment);

[0045] Figure 7 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;

[0046] Figure 8 In some other embodiments of the present invention, the refrigerator Figure 1 Cross-sectional view in CC direction;

[0047] Fig. 9 is a flow chart of main steps of a method for controlling air humidity in a refrigerator in other embodiments of the present invention;

[0048] Fig.10 It is a schematic block diagram of some components of the refrigerator in the present invention. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] like Figure 1 As shown, in the present invention, the refrigerator 100 includes a cabinet 110 and a door 120 installed on the cabinet 110. The door 120 is pivotally connected to the cabinet 110 and is used to open and cover the cabinet 110.

[0055] like Figure 2 As shown, in the present invention, the refrigerator 100 further includes a refrigeration system 130, which is used to provide coldness for the refrigerator 100. The refrigeration system 130 includes a compressor 131, a condenser 132, a capillary tube 133, and an evaporator 134, which are sequentially connected end to end to form a loop, so that the refrigerant circulates along the following path: compressor 131→condenser 132→capillary tube 133→evaporator 134→compressor 131.

[0056] Specifically, when the refrigerant flows through the compressor 131, it is compressed by the compressor 131 into a high temperature and high pressure state (liquid state or gas-liquid mixed state). When the refrigerant flows through the condenser 132, the heat is dissipated through the condenser 132 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 133, it is throttled and reduced in pressure to a low temperature and low pressure state (liquid state or gas-liquid mixed state) by the capillary 133. When the refrigerant flows through the evaporator 134, it absorbs heat from the external environment through the evaporator 134 and heats up to a high temperature and low pressure state (gas state).

[0057] It should be noted that the aforementioned states of the refrigerant in the compressor 131, the condenser 132, the capillary tube 133, and the evaporator 134, 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.

[0058] In addition, those skilled in the art may also replace the capillary tube 133 with any other feasible pressure-reducing and throttling component, such as an electronic expansion valve, as needed.

[0059] like Figures 3 to 6As shown, in the present invention, the box body 110 defines a freezing compartment 112, a refrigerating compartment 111 and a cooling compartment 113, and the freezing compartment 112 and the refrigerating compartment 111 are communicated with the cooling compartment 113 respectively.

[0060] Continue reading Figures 3 to 6 The refrigerating compartment 111 is provided with a refrigerating air outlet 1111 and a refrigerating air return outlet 1112, so that the refrigerating compartment 111 receives cold air from the refrigerating compartment 113 through the refrigerating air outlet 1111, and the air therein flows to the refrigerating compartment 113 through the refrigerating air return outlet 1112; and the freezing compartment 112 receives cold air from the refrigerating compartment 113 through the freezing air outlet 1121, and the air therein flows to the refrigerating compartment 113 through the freezing air return outlet 1122.

[0061] like Figures 4 to 6 As shown, in the present invention, the box body 110 further defines a refrigerating air duct 114 and a freezing air duct 115 . The refrigerating air duct 114 is used to connect the refrigerating compartment 111 with the refrigerating compartment 113 , and the freezing air duct 115 is used to connect the freezing compartment 112 with the refrigerating compartment 113 .

[0062] Specifically, one end of the refrigeration air duct 114 extends to the refrigeration air outlet 1111. In other words, the refrigeration compartment 111 is connected to the refrigeration air duct 114 through the refrigeration air outlet 1111, and further, the refrigeration compartment 111 is also connected to the refrigeration compartment 113 through the refrigeration return air outlet 1112. In other words, the refrigeration air outlet 1111 is formed on the partition (or side wall) between the refrigeration compartment 111 and the refrigeration air duct 114, and the refrigeration return air outlet 1112 is formed on the partition (or side wall) between the refrigeration compartment 111 and the refrigeration compartment 113.

[0063] Accordingly, one end of the freezing air duct 115 extends to the freezing air outlet 1121. In other words, the freezing compartment 112 is connected to the freezing air duct 115 through the freezing air outlet 1121, and further, the freezing compartment 112 is connected to the refrigeration compartment 113 through the freezing air return port 1122. In other words, the freezing air outlet 1121 is formed on the partition (or side wall) between the freezing compartment 112 and the freezing air duct 115, and the freezing air return port 1122 is formed on the partition (or side wall) between the freezing compartment 112 and the refrigeration compartment 113.

[0064] Continue reading Figures 4 to 6 The evaporator 134 is arranged in the refrigeration compartment 113 for cooling the air in the refrigeration compartment 113 .

[0065] Continue reading Figures 4 to 6In the present invention, the refrigerator 100 further includes a fan 140 and a damper assembly 150. The fan 140 is used to drive the air in the refrigeration compartment 113 to flow toward the freezing compartment 112 and the refrigeration compartment 111. The damper assembly 150 is used to control the flow direction of the air driven by the fan 140.

[0066] like Figure 5 and Figure 6 As shown, in the present invention, the damper assembly 150 includes a first damper 151 and a second damper 152 . The first damper 151 is used to control the connection between the refrigerating compartment 111 and the cooling compartment 113 , and the second damper 152 is used to control the connection between the freezing compartment 112 and the cooling compartment 113 .

[0067] Further, the damper assembly 150 can move the first damper 151 and the second damper 152 to Figure 5 The air door assembly 150 can also move the first air door 151 and the second air door 152 to the position shown in the figure, so that the refrigeration air duct 114 is connected to the refrigeration compartment 113, and the freezing air duct 115 is blocked from connecting to the refrigeration compartment 113. Figure 6 The position shown is used to block the connection between the refrigerating air duct 114 and the refrigerating compartment 113 and to enable the connection between the freezing air duct 115 and the refrigerating compartment 113 .

[0068] like Figure 5 As shown, when the damper assembly 150 changes to Figure 5 When in the position shown, the fan 140 can drive the air to circulate along the following path: refrigerated compartment 111 → refrigerated air return port 1112 → refrigeration compartment 113 → refrigerated air duct 114 → refrigerated air outlet 1111 → refrigerated compartment 111.

[0069] like Figure 6 As shown, when the damper assembly 150 changes to Figure 6 When in the position shown, the fan 140 can drive the air to circulate along the following path: the freezing compartment 112 → the freezing air return port 1122 → the refrigeration compartment 113 → the freezing air duct 115 → the freezing air outlet 1121 → the freezing compartment 112 .

[0070] It should be noted that, since the refrigerator 100 has various forms, those skilled in the art can appropriately adjust the above-mentioned refrigeration system 130 according to the actual form of the refrigerator 100. For example, multiple evaporators 134 are arranged in series or in parallel to form a refrigeration module that works simultaneously. Those skilled in the art can also appropriately adjust the distribution and number of the compartments in the box body 110 described above in conjunction with the drawings as needed.

[0071] Exemplarily, under the premise of ensuring that the damper assembly 150 can achieve the above functions, the damper assembly 150 can also be configured in any other feasible form. For example, the damper assembly 150 is configured in a form with only one damper, and the damper selectively connects the refrigeration air duct 114 or the freezing air duct 115 to the refrigeration compartment 113.

[0072] The following is combined with Figures 1 to 6 , to describe in detail the method for controlling the air humidity in a refrigerator of the present invention.

[0073] like Figure 7 As shown, in some embodiments of the present invention, the method for controlling the air humidity in a refrigerator includes:

[0074] In step S110, in response to the freezing compartment 112 being lowered to the freezing and refrigeration end temperature, the compressor 131 of the refrigerator 100 is controlled to stop running, the fan 140 is controlled to run, and the damper assembly 150 is controlled to connect the refrigerating compartment 111 and the refrigerating compartment 113 to allow air to circulate between the refrigerating compartment 111 and the refrigerating compartment 113.

[0075] The freezing and refrigeration end temperature is the temperature at which the freezing chamber 112 ends refrigeration after refrigeration begins, and it can be any feasible value, such as -16°C, -18°C, -21°C, -23°C, etc.

[0076] Step S120, in response to satisfying the first preset condition, controlling the damper assembly 150 to connect the freezing chamber 112 and the refrigeration chamber 113 (eg, Figure 5 As shown), air circulates between the freezing compartment 112 and the refrigerating compartment 113.

[0077] The first preset condition is that the damper assembly 150 connects the refrigerating compartment 111 and the cooling compartment 113 for a first time or the temperature in the cooling compartment 113 reaches a preset temperature, so that the frost on the evaporator 134 melts.

[0078] The first duration may be any feasible duration such as 3 minutes, 5 minutes, 10 minutes, 12 minutes, etc. The preset temperature may be any feasible temperature such as 0°C, 1°C, 3°C, 5°C, etc.

[0079] It is understood by those skilled in the art that when the temperature in the refrigeration chamber 113 reaches the preset temperature, it is only because the air in the refrigeration chamber 113 has reached the preset temperature and the surface of the evaporator 134 has approached or reached the preset temperature. Since heat transfer takes a certain amount of time and there is still low-temperature refrigerant in the evaporator 134, even the refrigerant in the condenser 132 will still enter the evaporator 134 through the capillary tube 133 due to the high pressure, so that the internal temperature of the evaporator 134 is still low. When the damper assembly 150 is changed to Figure 6 When the refrigeration compartment 113 is in the position shown, the refrigeration compartment 113 no longer receives high-temperature air from the cold storage compartment 111, so that the surface of the evaporator 134 is rapidly cooled down under the action of the refrigerant therein, and the temperature rise of the freezing compartment 112 is not caused, or the effect on the temperature rise of the freezing compartment 112 is small and can be ignored.

[0080] Those skilled in the art can also understand that, in step S120, by circulating the air between the freezing compartment 112 and the refrigeration compartment 113, the air can promote the evaporation of liquid water on the evaporator 134 when passing through the evaporator 134, thereby increasing the humidity of the air. After the air with high humidity enters the freezing compartment 112, the humidity of the air in the freezing compartment 112 will be increased accordingly, so that the refrigerator 100 of the present invention increases the humidity of the air in the freezing compartment 112 and improves the preservation effect of the freezing compartment 112 on food.

[0081] Step S130 , in response to satisfying the second preset condition, controlling the fan 140 to stop.

[0082] The second preset condition is that the duration of the damper assembly 150 connecting the freezing compartment 112 and the refrigeration compartment 113 reaches a second duration or the air humidity in the freezing compartment 112 reaches a preset humidity value.

[0083] The second duration can be any feasible duration such as 3 minutes, 5 minutes, 7 minutes, 11 minutes, etc. The preset humidity value is the optimal humidity condition for the freezing chamber 112 to preserve the food therein, and its specific value can be selected from 80% to 100%, such as 80%, 85%, 92%, 98%, 100%, etc.

[0084] Further, step S110 may specifically include: in response to the freezer compartment 112 being lowered to the freezing and refrigeration end temperature and the refrigerator compartment 111 being lowered to the refrigeration and refrigeration end temperature, controlling the compressor 131 of the refrigerator 100 to stop running, controlling the fan 140 to run, and controlling the damper assembly 150 to connect the refrigerator compartment 111 and the refrigerator compartment 113.

[0085] The refrigeration end temperature is the temperature at which the refrigeration of the refrigeration compartment 111 ends after the refrigeration starts, and it can be any feasible value, such as 0° C., 1° C., 3° ​​C., etc.

[0086] That is, when the refrigerating compartment 111 and the freezing compartment 112 are both cooled, the compressor 131 can be controlled to stop running, the fan 140 can be controlled to run, and the damper assembly 150 can be controlled to connect the refrigerating compartment 111 and the freezing compartment 113 .

[0087] Those skilled in the art can understand that when the freezer compartment 112 is lowered to the freezing and refrigeration termination temperature and the refrigerator compartment 111 is lowered to the refrigeration and refrigeration termination temperature, the compressor 131, the fan 140 and the damper assembly 150 are controlled to operate in the above manner, which can effectively avoid the evaporator 134 from having insufficient cooling capacity to lower the temperature of the refrigerator compartment 111, and avoid the evaporator 134 from having insufficient cooling capacity, resulting in a temperature rise in the freezer compartment 112.

[0088] Further, step S120 may specifically include: in response to satisfying the first preset condition, controlling the damper assembly 150 to connect the freezer compartment 112 and the refrigeration compartment 113 and to connect the refrigerator compartment 111 and the refrigeration compartment 113 so that air circulates between the freezer compartment 112 and the refrigerator compartment 111 and the refrigeration compartment 113.

[0089] That is, while the air is humidified by the liquid water on the evaporator 134, the air in the refrigerating compartment 111 can also enter the refrigerating compartment 113. Since the temperature in the refrigerating compartment 111 is higher than the temperature in the freezing compartment 112, the moisture content in the air in the refrigerating compartment 111 is also higher than the moisture content in the air in the freezing compartment 112 (this is an objective physical phenomenon), so when the air in the refrigerating compartment 111 enters the freezing compartment 112, the air with different humidity levels can be quickly mixed, thereby effectively and quickly increasing the moisture content in the air in the freezing compartment 112, thereby correspondingly increasing the air humidity in the freezing compartment 112.

[0090] 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.

[0091] like Figure 8 As shown, in other embodiments of the present invention, different from some embodiments described above, the refrigerator 100 further includes a heating device 160 for heating the air flowing to the refrigerating compartment 111. And the method for controlling the humidity of the air in the refrigerator further includes: in response to the air door assembly 150 connecting the refrigerating compartment 111 and the cooling compartment 113, controlling the heating device 160 to work.

[0092] The heating device 160 may be Figure 8 As shown, it is arranged in the refrigeration air duct 114. Moreover, the heating device 160 can be an electric heating wire. Alternatively, those skilled in the art can also set the heating device 160 to any other feasible heating device as needed.

[0093] like Fig. 9 As shown, in some other embodiments of the present invention, the method for controlling the air humidity in the refrigerator may include:

[0094] In step S210, in response to the freezing compartment 112 being lowered to the freezing and refrigeration end temperature, the compressor 131 of the refrigerator 100 is controlled to stop running, the fan 140 is controlled to run, and the damper assembly 150 is controlled to connect the refrigerating compartment 111 and the refrigerating compartment 113, so that air circulates between the refrigerating compartment 111 and the refrigerating compartment 113. For details, please refer to the description of step S110 above.

[0095] Step S220, controlling the heating device 160 to operate.

[0096] Step S230, in response to satisfying the first preset condition, controlling the damper assembly 150 to connect the freezing chamber 112 and the refrigerating chamber 113, so that air circulates between the freezing chamber 112 and the refrigerating chamber 113. For details, please refer to the above description of step S120.

[0097] Step S240, in response to satisfying the second preset condition, controlling the fan 140 to stop. For details, please refer to the above description of step S130.

[0098] Wherein, step S220 may specifically include controlling the heating device 160 to operate according to the following heating power P:

[0099] P=C·M·(T 藏 -T 蒸 -4)

[0100] Wherein, C is the specific heat capacity of air; M is the air supply volume of the refrigerating chamber 111 and is positively correlated with the rotation speed of the fan 140; T 藏 is the current temperature of the refrigerating compartment 111; T 蒸 is the current temperature of the evaporator 134 .

[0101] 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.

[0102] Based on the above description, those skilled in the art can understand that, in other embodiments of the present invention, by the formula - P = C·M·(T 藏 -T 蒸 -4) to determine the heating power of the heating device 160, so that the heating power of the heating device 160 can be automatically adjusted according to the temperature of the evaporator 134, the current temperature of the refrigerating compartment 111 and the rotation speed of the fan 140, while preventing the temperature of the refrigerating compartment 111 from being too low, and also preventing the temperature of the refrigerating compartment 111 from rising.

[0103] like Fig.10 As shown, the refrigerator 100 of the present invention also includes a controller 170, which includes a memory 171 and a processor 172. The memory 171 stores a machine executable program 1711. When the machine executable program 1711 is executed by the processor 172, it can implement the control method described in any of the above embodiments.

[0104] The memory 171 may include a memory and a non-volatile memory, and provide execution instructions and data to the processor 172. 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.

[0105] The processor 172 is an integrated circuit chip that has the ability to process signals. The processor 172 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.

[0106] 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.

[0107] Finally, it should be noted that the refrigerator 1001 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.

[0108] 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 freezing compartment, a cold storage compartment, a refrigerating compartment, an evaporator arranged in the refrigerating compartment, a fan for driving air in the refrigerating compartment to flow toward the freezing compartment and the cold storage compartment, and a damper assembly for controlling the air flow direction, the control method comprising: In response to the freezing compartment being lowered to the freezing and refrigeration end temperature, controlling the compressor of the refrigerator to stop running, controlling the fan to run, and controlling the damper assembly to connect the refrigerating compartment and the refrigerating compartment so that air circulates between the refrigerating compartment and the refrigerating compartment; In response to satisfying a first preset condition, controlling the damper assembly to connect the freezing compartment and the refrigerating compartment so that air circulates between the freezing compartment and the refrigerating compartment; In response to satisfying a second preset condition, the fan is controlled to stop.

2. The control method according to claim 1, wherein: The first preset condition is that the damper assembly is connected to the cold storage compartment and the refrigeration compartment for a first time or the temperature in the refrigeration compartment reaches a preset temperature, so that the frost on the evaporator melts.

3. The control method according to claim 1, wherein: The second preset condition is that the duration of the damper assembly connecting the freezing compartment and the refrigeration compartment reaches a second duration or the air humidity in the freezing compartment reaches a preset humidity value.

4. The control method according to claim 1, wherein: In response to satisfying the first preset condition, the step of controlling the damper assembly to connect the freezing compartment and the refrigerating compartment so that air circulates between the freezing compartment and the refrigerating compartment comprises: In response to satisfying the first preset condition, the damper assembly is controlled to connect the freezing compartment and the refrigerating compartment and to connect the refrigerating compartment and the refrigerating compartment, so that air circulates between the freezing compartment and the refrigerating compartment and the refrigerating compartment.

5. The control method according to claim 1, wherein: The steps of controlling the compressor of the refrigerator to stop running, controlling the fan to run, and controlling the damper assembly to connect the refrigerating compartment and the refrigerating compartment in response to the freezing compartment being lowered to the freezing and refrigeration end temperature include: In response to the freezing compartment being lowered to the freezing and refrigeration end temperature and the refrigerating compartment being lowered to the refrigeration and refrigeration end temperature, the compressor of the refrigerator is controlled to stop running, the fan is controlled to run, and the damper assembly is controlled to connect the refrigerating compartment and the refrigerating compartment.

6. The control method according to claim 1, wherein: The refrigerator further comprises a heating device for heating air flowing toward the refrigerating compartment; The control method further includes: in response to the damper assembly connecting the cold storage compartment and the refrigeration compartment, controlling the heating device to operate.

7. The control method according to claim 6, 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.

8. A refrigerator, comprising: The box body is defined as a freezer compartment, a refrigeration compartment and a refrigerator compartment; 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; A damper assembly, used to control the opening and closing of the refrigerating compartment, the freezing compartment and the refrigerating 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, the control method according to any one of claims 1 to 5 can be implemented.

9. The refrigerator according to claim 8, wherein: The damper assembly comprises a first damper and a second damper, wherein the first damper is used to control the connection and disconnection between the refrigerating compartment and the freezing compartment, and the second damper is used to control the connection and disconnection between the freezing compartment and the freezing compartment.

10. The refrigerator according to claim 8, wherein: The refrigerator further comprises a heating device for heating the air flowing to the refrigerating compartment, and the machine executable program can also implement the control method of claim 6 or 7 when executed by the processor.

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