Condensing temperature control method and device for return air path of refrigerator and refrigerator
By setting heating components on the pipe wall of the refrigerator's return air passage and controlling the heating power according to the relationship between air temperature and wall temperature, the problem of frosting of the return air passage caused by the large refrigerator's refrigeration power is solved, and the effect of reducing the probability of frosting and improving the refrigeration efficiency is achieved.
Patent Information
- Application Number
- CN202311400382.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-26
- Publication Date
- 2025-04-29
AI Technical Summary
When the refrigerator has a large refrigeration power, it is easy to cause frost in the return air passage.
By providing heating components on the pipe wall of the return air path, and controlling the heating power of the heating components according to the correspondence between the air temperature and the wall temperature range, the heating power of the heating components is maintained to keep the wall temperature within the preset range and prevent frost.
It effectively reduces the probability of frosting of the return air passage, and further improves the refrigerator's refrigeration efficiency on the basis of reducing the probability of frosting of the evaporator.
Smart Images
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Abstract
Description
Technical Field
[0001] The present application relates to the technical field of refrigerators, and for example, to a method and device for controlling the condensing temperature of a return air duct of a refrigerator, and a refrigerator. Background Art
[0002] At present, refrigerators are divided into single-system refrigerators and multi-system refrigerators. The refrigerator compartment of a single-system refrigerator does not have a separate evaporator. The evaporator corresponding to the freezer compartment needs to supply air through the damper, and the air in the refrigerator compartment returns to the space where the evaporator is located through the return air duct. The air that enters the space where the evaporator is located through the return air duct is likely to cause frost on the evaporator.
[0003] In some existing technologies, part of the pipeline between the compressor and the evaporator can be used as a condenser for the return air duct to cool the return air duct. In the process of the air passing through the return air duct, the air is dehumidified to a certain extent, thereby reducing the risk of frost on the evaporator to a certain extent.
[0004] In the process of implementing the embodiments of the present application, it is found that there are at least the following problems in the related technology:
[0005] When the refrigeration power of the refrigerator is large, frost may easily form on the return air duct.
[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention
[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.
[0008] The embodiments of the present application provide a method and device for controlling the condensation temperature of a return air duct of a refrigerator, and a refrigerator, so as to reduce the probability of frosting on the return air duct.
[0009] In some embodiments, a return air duct is arranged between the compartment of the refrigerator and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; a condenser is arranged between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is arranged in the return air duct for cooling the return air duct; a condensation temperature control method of the refrigerator return air duct includes: obtaining the current air temperature in the return air duct; determining a preset wall temperature range of the return air duct pipe wall corresponding to the current air temperature according to the corresponding relationship between the air temperature and the wall temperature range; and controlling the heating power of the heating component according to the preset wall temperature range.
[0010] Optionally, the heating power of the heating component is controlled according to the current wall temperature, including: obtaining the initial heating power of the heating component; controlling the heating component to heat according to the initial heating power; obtaining the current wall temperature; if the current wall temperature exceeds a preset wall temperature range, adjusting the heating power of the heating component based on the initial heating power to adjust the current wall temperature to within the preset wall temperature range.
[0011] Optionally, if the current wall temperature exceeds the preset wall temperature range, the heating power of the heating component is adjusted based on the initial heating power, including: if the current wall temperature is greater than the maximum value of the preset wall temperature range, the heating power of the heating component is reduced based on the initial heating power; if the current wall temperature is less than the minimum value of the preset wall temperature range, the heating power of the heating component is increased based on the initial heating power.
[0012] Optionally, obtaining the initial heating power of the heating component includes: obtaining an average temperature of the evaporator within a set number of days; and determining the initial heating power corresponding to the average temperature of the evaporator according to a corresponding relationship between the evaporator temperature and the heating power.
[0013] Optionally, the method for controlling the condensing temperature of the return air duct of the refrigerator further includes: if the current wall temperature is within a preset wall temperature range, maintaining the current heating power of the heating component unchanged.
[0014] Optionally, the corresponding relationship between the air temperature and the wall temperature range includes:
[0015] The minimum value of the wall temperature range is greater than 0°C;
[0016] The maximum value of the wall temperature range is lower than the air temperature, and the higher the air temperature is, the greater the temperature difference between the air temperature and the maximum value of the wall temperature range is.
[0017] Optionally, the evaporator and the compressor in the refrigerator refrigeration system are provided with a conventional refrigerant pipeline, and the inlets of the conventional refrigerant pipeline and the condenser are connected via a switching valve.
[0018] Optionally, before obtaining the current air temperature in the return air duct, the condensing temperature control method of the return air duct of the refrigerator also includes: when air is supplied in the compartment, controlling the switching valve to connect to the condenser so that the refrigerant in the evaporator can return to the compressor through the condenser; when no air is supplied in the compartment, controlling the switching valve to connect to the conventional refrigerant pipeline and blocking the condenser so that the refrigerant returns directly from the evaporator to the compressor.
[0019] In some embodiments, a return air duct is arranged between the compartment of the refrigerator and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; a condenser is arranged between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is arranged in the return air duct for cooling the return air duct; the condensing temperature control device of the return air duct of the refrigerator includes an acquisition module, a determination module and a control module; the acquisition module is used to obtain the current air temperature in the return air duct; the determination module is used to determine the preset wall temperature range of the return air duct wall corresponding to the current air temperature according to the correspondence between the air temperature and the wall temperature range; the control module is used to control the heating power of the heating component according to the preset wall temperature range.
[0020] In some embodiments, the condensing temperature control device of the refrigerator return air duct includes a processor and a memory storing program instructions, and the processor is configured to execute the condensing temperature control method of the refrigerator return air duct provided in the above embodiments when executing the program instructions.
[0021] In some embodiments, the refrigerator comprises:
[0022] Refrigerator body;
[0023] A return air duct is arranged between the compartment and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct;
[0024] A condenser is provided between the evaporator and the compressor in the refrigerator refrigeration system. The condenser is provided in the return air duct to cool the return air duct.
[0025] The condensing temperature control device for the return air duct of the refrigerator provided in the aforementioned embodiment is installed on the refrigerator body.
[0026] The condensation temperature control method of the refrigerator return air duct provided in the embodiment of the present application can achieve the following technical effects:
[0027] The heating power of the heating component is controlled according to the preset wall temperature range, so that the wall temperature of the return air duct is within the preset wall temperature range. The preset wall temperature range has a corresponding relationship with the current air temperature. The corresponding relationship between the air temperature and the wall temperature range can cause condensation of air in the return air duct but no frost.
[0028] As analyzed above, by controlling the heating power of the heating component, the probability of frosting on the evaporator is reduced, while the probability of frosting in the return air duct is also reduced.
[0029] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are regarded as similar elements, and wherein:
[0031] Figure 1a and Figure 1b It is a schematic diagram of the implementation structure of a method for controlling the condensing temperature of a return air duct of a refrigerator provided in an embodiment of the present application;
[0032] Figure 2 It is a flow chart of a method for controlling the condensing temperature of a return air duct of a refrigerator provided in an embodiment of the present application;
[0033] Figure 3 It is a flow chart of a method for controlling the condensing temperature of a return air duct of a refrigerator provided in an embodiment of the present application;
[0034] Figure 4 It is a flow chart of a method for controlling the condensing temperature of a return air duct of a refrigerator provided in an embodiment of the present application;
[0035] Figure 5 It is a schematic diagram of a condensing temperature control device for a return air duct of a refrigerator provided in an embodiment of the present application;
[0036] Figure 6 It is a schematic diagram of a condensing temperature control device for a return air duct of a refrigerator provided in an embodiment of the present application;
[0037] Figure 7 It is a schematic diagram of a refrigerator provided in an embodiment of the present application. DETAILED DESCRIPTION
[0038] In order to be able to understand the features and technical contents of the embodiments of the present application in more detail, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, in the absence of these details, one or more embodiments can still be implemented. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.
[0039] The terms "first", "second", etc. in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present application described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0040] Unless otherwise stated, the term "plurality" means more than two.
[0041] In the embodiment of the present application, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.
[0042] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.
[0043] Figure 1a and Figure 1b It is a schematic diagram of the implementation structure of a method for controlling the condensing temperature of a refrigerator return air duct provided in an embodiment of the present application.
[0044] like Figure 1a As shown, the refrigeration system of the refrigerator includes a compressor 11, a condenser 12, a throttling device 13, an evaporator 14, a switching valve 15, a condenser tube 16 and a conventional refrigerant pipeline 17.
[0045] Among them, the compressor 11 is connected with the condenser 12, and the refrigerant can flow from the compressor 11 to the condenser 12; the condenser 12 is connected with the throttling device 13, and the refrigerant can flow from the condenser 12 to the throttling device 13; the throttling device 13 is connected with the evaporator 14, and the refrigerant can flow from the throttling device 13 to the evaporator 14; the evaporator 14 is connected with the condenser 16 and the conventional refrigerant pipeline 17 through the switching valve 15. When the switching valve 15 is in a first working state, the refrigerant can flow from the evaporator 14 to the condenser 16. When the switching valve 15 is in a second working state, the refrigerant can flow from the evaporator 14 to the conventional refrigerant pipeline 17; the outlets of the condenser 16 and the conventional refrigerant pipeline 17 merge and are connected to the compressor 11 together, and the refrigerant flowing out of the condenser 16 and / or the condenser 17 can flow to the compressor 11.
[0046] Among them, when the switching valve 15 is in the first working state, the refrigerant can flow from the evaporator 14 to the condenser 16, and the conventional refrigerant pipeline 17 can be partially blocked at this time, that is, the refrigerant can also flow from the evaporator 14 to the conventional refrigerant pipeline 17 at the same time, or, at this time, the conventional refrigerant pipeline 17 is completely blocked.
[0047] When the switching valve 15 is in the second working state, the refrigerant can flow from the evaporator 14 to the conventional refrigerant pipeline 17 , and at this time the condenser 16 can be completely blocked, or at this time the condenser 16 can be partially blocked.
[0048] In the first working state, the conventional refrigerant pipeline 17 is partially blocked, and in the second working state, the condenser 16 is partially blocked. In the first working state, the refrigerant flow in the condenser 16 is greater than the refrigerant flow in the condenser 16 in the second working state; the refrigerant flow in the conventional refrigerant pipeline 17 in the first working state is less than the refrigerant flow in the conventional refrigerant pipeline 17 in the second working state.
[0049] like Figure 1b As shown, the air in the cold storage room can flow to the space where the evaporator 14 is located through the return air duct 21, and the air in the freezer room can flow to the space where the evaporator 14 is located through the freezing return air port 22; a wall temperature sensor 20 can be set on the wall of the return air duct 21 to detect the wall temperature of the return air duct 21 pipe wall, and an air temperature sensor 19 can be set on the wall of the return air duct 21 to detect the air temperature in the return air duct 21.
[0050] The heating component 23 is arranged in the return air passage 21, for example, it can be embedded in the tube wall of the return air passage 21, or it can surround the return air passage 21 and be arranged on the outer surface of the tube wall of the return air passage 21; the condensing tube 16 can surround the return air passage 21 and be arranged on the outer surface of the tube wall of the return air passage 21. The heating component 23 and the condensing tube 16 can be adjacent to each other or not, and it is sufficient to ensure that the heating component 23 can heat the inner side of the tube wall of the return air passage 21 and the condensing tube 16 can cool the inner side of the tube wall of the return air passage 21.
[0051] The heating component 23 may be an electric heating wire, and the heating power of the heating component 23 may be adjusted by adjusting the current; or, the heating component 23 may be an additional heating tube connected between the compressor 11 and the condenser 12, and the additional heating tube may be connected in parallel. Figure 1a The compressor 11 and the original pipeline of the condenser 12 shown in the figure are shown (not shown in the figure); the refrigerant flowing out of the compressor 11 can flow through the heating tube, and a throttling device is provided in the heating tube to control the refrigerant flow rate flowing through the heating tube, the operating frequency or exhaust temperature of the compressor 11, and then adjust the refrigerant flow rate in the heating tube to achieve the adjustment of the heating power of the heating component 23.
[0052] The throttling device 13 may be a capillary tube or a throttling valve.
[0053] Of course, a fan 18 may also be provided in the space where the evaporator 14 is located, so as to provide power for air circulation in the refrigerating chamber or the freezing chamber.
[0054] In the embodiment of the present application, the compartment may be the above-mentioned refrigeration compartment or the above-mentioned freezer compartment.
[0055] Figure 2The present invention is a flowchart of a method for controlling the condensing temperature of a refrigerator return air duct provided in an embodiment of the present application. The condensing temperature control method can be executed in a refrigerator controller, or in an independent controller other than the refrigerator controller, or in a smart home system, or in a server of the smart home system.
[0056] In the refrigerator, a return air duct is arranged between the compartment and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; a condenser is arranged between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is arranged in the return air duct for cooling the return air duct.
[0057] Combination Figure 2 As shown, the condensation temperature control method of the return air path of the refrigerator includes:
[0058] S201. Obtain the current air temperature in the return air duct.
[0059] For example, through Figure 1b The air temperature sensor 19 shown in FIG. 1 obtains the current air temperature.
[0060] S202: Determine a preset wall temperature range of the return air duct wall corresponding to the current air temperature according to the corresponding relationship between the air temperature and the wall temperature range.
[0061] The corresponding relationship between the air temperature and the wall temperature range can cause condensation of air in the return air duct without frosting.
[0062] Optionally, the correspondence between the air temperature and the wall temperature range includes: the minimum value of the wall temperature range is greater than 0°C; the maximum value of the wall temperature range is less than the air temperature, and the higher the air temperature, the greater the temperature difference between the air temperature and the maximum value of the wall temperature range.
[0063] The minimum value of the wall temperature range is greater than 0°C, which can prevent the air from frosting in the return air duct as much as possible. The maximum value of the wall temperature range is less than the air temperature, which can enable the return air duct to cool the air flowing into it. During the air cooling process, the relative humidity in the air continues to increase. After reaching 100%, condensation occurs on the inner side of the return air duct wall, which can reduce the humidity in the air.
[0064] The higher the air temperature, the higher the absolute water content in the air when the relative humidity of the air remains unchanged. In this case, the greater the temperature difference between the air temperature and the maximum value of the wall temperature range, the wall temperature within the wall temperature range can cause a greater cooling amplitude of the air flowing into the return air duct; when the relative humidity of the air remains unchanged, the greater the cooling amplitude, the more water is precipitated from the air, the more the absolute water content of the air entering the space where the evaporator is located decreases, and the risk of frosting on the evaporator is reduced.
[0065] Because the minimum value of the wall temperature range is greater than 0°C, and the maximum value of the wall temperature range is lower than the air temperature, the lower the air temperature, the smaller the temperature span of the wall temperature range (the temperature difference between the maximum and minimum values of the wall temperature range). In this case, the lower the air temperature, the smaller the temperature difference between the air temperature and the maximum value of the wall temperature range. On the basis of reducing the risk of frost on the evaporator and the return air duct, the temperature span of the wall temperature range can be expanded to a certain extent.
[0066] In some specific application examples, the range of air temperature and wall temperature is shown in the following table:
[0067]
[0068]
[0069] The correspondence between the air temperature and the wall temperature range in the above table is for illustrative purposes only and does not limit the specific numerical values of the correspondence between the air temperature and the wall temperature range. Those skilled in the art can set the specific correspondence between the air temperature and the wall temperature range that conforms to the actual situation based on the above description of the correspondence between the air temperature and the wall temperature range.
[0070] S203, controlling the heating power of the heating component according to a preset wall temperature range.
[0071] The wall temperature in the embodiment of the present application refers to the wall temperature on the inner side of the return air duct wall.
[0072] The heating power of the heating component is controlled in this way to ensure that the wall temperature of the return air duct is within a preset wall temperature range.
[0073] The heating power of the heating component is controlled according to the preset wall temperature range, so that the wall temperature of the return air duct is within the preset wall temperature range. The preset wall temperature range has a corresponding relationship with the current air temperature. The corresponding relationship between the air temperature and the wall temperature range can cause condensation of air in the return air duct but no frost.
[0074] As analyzed above, by controlling the heating power of the heating component, the probability of frosting on the evaporator is reduced, while the probability of frosting in the return air duct is also reduced.
[0075] The higher the refrigerator's refrigeration power, the lower the evaporator temperature and the lower the condenser temperature; the lower the refrigerator's refrigeration power, the higher the evaporator temperature and the higher the condenser temperature. That is, the condenser temperature fluctuates with the fluctuation of the refrigerator's refrigeration power, which also causes the return air duct temperature to fluctuate easily. Controlling the heating power of the heating component with the wall temperature range instead of the accurate setting of the wall temperature can adapt to the return air duct temperature fluctuation caused by the refrigerator's refrigeration power.
[0076] Figure 3 The present invention is a flowchart of a method for controlling the condensing temperature of a refrigerator return air duct provided in an embodiment of the present application. The condensing temperature control method can be executed in a refrigerator controller, or in an independent controller other than the refrigerator controller, or in a smart home system, or in a server of the smart home system.
[0077] In the refrigerator, a return air duct is arranged between the compartment and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; a condenser is arranged between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is arranged in the return air duct to cool the return air duct.
[0078] Combination Figure 3 As shown, the condensation temperature control method of the return air path of the refrigerator includes:
[0079] S301, obtaining the current air temperature in the return air duct.
[0080] S302: Determine a preset wall temperature range of the return air duct wall corresponding to the current air temperature according to the corresponding relationship between the air temperature and the wall temperature range.
[0081] S303: Obtain the initial heating power of the heating component.
[0082] The initial heating power has a positive correlation with the average cooling power of the refrigerator: the greater the average cooling power of the refrigerator, the greater the initial heating power; the smaller the average cooling power of the refrigerator, the smaller the initial heating power.
[0083] A person skilled in the art can obtain the initial heating power through experiments based on the positive correlation between the initial heating power and the average cooling power of the refrigerator, so that when the heating element is controlled by the initial heating power, it is easier to make the current wall temperature of the return air duct within the preset wall temperature range.
[0084] Optionally, obtaining the initial heating power of the heating component includes: obtaining the average temperature of the evaporator within a set number of days; and determining the initial heating power corresponding to the average temperature of the evaporator according to the corresponding relationship between the average temperature of the evaporator and the heating power. The lower the average temperature of the evaporator, the greater the initial heating power; the higher the average temperature of the evaporator, the smaller the initial heating power.
[0085] S304, controlling the heating component to heat according to the initial heating power.
[0086] S305: Obtain current wall temperature.
[0087] S306: If the current wall temperature exceeds the preset wall temperature range, the heating power of the heating component is adjusted based on the initial heating power to adjust the current wall temperature to within the preset wall temperature range.
[0088] Optionally, if the current wall temperature exceeds the preset wall temperature range, the heating power of the heating component is adjusted based on the initial heating power, including: if the current wall temperature is greater than the maximum value of the preset wall temperature range, the heating power of the heating component is reduced based on the initial heating power; if the current wall temperature is less than the minimum value of the preset wall temperature range, the heating power of the heating component is increased based on the initial heating power.
[0089] S307: If the current wall temperature is within the preset wall temperature range, the current heating power of the heating component is maintained unchanged.
[0090] In the above embodiment, the heating power of the heating component is controlled in the form of initial heating power, which belongs to a control scheme of relatively constant heating power. This control scheme of relatively constant heating power can cope with the temperature change of the condenser:
[0091] The temperature of the condenser changes frequently and dramatically (for example, there is a large difference in the temperature of the condenser when the refrigerator is in the insulation stage and the maximum power cooling stage). The change in the temperature of the return air duct wall caused by the temperature change of the condenser has a large lag time. The change in the wall temperature of the return air duct caused by the frequent and dramatic temperature changes of the condenser is no longer so frequent and dramatic. The control scheme with relatively constant heating power can adapt to the temperature changes that are no longer so frequent and dramatic.
[0092] In addition, in the process of controlling the wall temperature of the return air duct, the wall temperature changes caused by the condenser represent different heating requirements. Using a preset wall temperature range to control the current wall temperature also allows a certain error between the relatively constant heating power and the heating demand corresponding to the return air duct wall temperature change, which makes the control scheme easier to be in a stable state.
[0093] Furthermore, in the aforementioned embodiment, the higher the air temperature, the greater the temperature difference between the air temperature and the maximum value of the wall temperature range, and the lower the air temperature, the smaller the temperature difference between the air temperature and the maximum value of the wall temperature range. When the air temperature is low, the temperature span of the wall temperature range can be expanded to a certain extent, which can further stabilize the control scheme.
[0094] Figure 4 The present invention is a flowchart of a method for controlling the condensing temperature of a refrigerator return air duct provided in an embodiment of the present application. The condensing temperature control method can be executed in a refrigerator controller, or in an independent controller other than the refrigerator controller, or in a smart home system, or in a server of the smart home system.
[0095] In the refrigerator, a return air duct is arranged between the compartment and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; a condenser is arranged between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is arranged in the return air duct for cooling the return air duct; the evaporator and the compressor in the refrigerator refrigeration system are provided with a conventional refrigerant pipeline, and the inlets of the conventional refrigerant pipeline and the condenser are connected through a switching valve.
[0096] Combination Figure 4 As shown, the condensation temperature control method of the return air path of the refrigerator includes:
[0097] S401. When there is no air supply in the room, the switching valve is controlled to connect the conventional refrigerant pipeline and block the condenser pipe, so that the refrigerant returns directly from the evaporator to the compressor.
[0098] The compartment may be a refrigerator compartment or a freezer compartment of a refrigerator, or may be a compartment separated from a refrigerator compartment or a freezer compartment of a refrigerator.
[0099] S402. When air is supplied to the room, the switching valve is controlled to connect the condenser pipe so that the refrigerant in the evaporator can return to the compressor through the condenser pipe.
[0100] S403: Obtain the current air temperature in the return air duct.
[0101] S404: Determine a preset wall temperature range of the return air duct wall corresponding to the current air temperature according to the corresponding relationship between the air temperature and the wall temperature range.
[0102] S405. Control the heating power of the heating component according to a preset wall temperature range.
[0103] By distinguishing between the cases where air is supplied to the room and the cases where air is not supplied, adaptive control of anti-frost on the return air duct is achieved.
[0104] Figure 5 Schematic diagram of a condensing temperature control device for a refrigerator return air duct provided in an embodiment of the present application. The condensing temperature control device can be implemented in the form of software, hardware or a combination of the two.
[0105] In the refrigerator, a return air duct is arranged between the compartment and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; a condenser is arranged between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is arranged in the return air duct for cooling the return air duct.
[0106] Combination Figure 5 As shown, the condensing temperature control device 50 of the return air duct of the refrigerator includes an obtaining module 51, a determining module 52 and a control module 53.
[0107] The obtaining module 51 is used to obtain the current air temperature in the return air duct;
[0108] The determination module 52 is used to determine the preset wall temperature range of the return air duct wall corresponding to the current air temperature according to the corresponding relationship between the air temperature and the wall temperature range;
[0109] The control module 53 is used to control the heating power of the heating component according to a preset wall temperature range.
[0110] Optionally, the control module 53 includes a first acquisition unit, a first control unit, a second acquisition unit and a second control unit; the first acquisition unit is used to obtain the initial heating power of the heating component; the first control unit is used to control the heating component to heat according to the initial heating power; the second acquisition unit is used to obtain the current wall temperature; the second control unit is used to adjust the heating power of the heating component based on the initial heating power if the current wall temperature exceeds the preset wall temperature range, so as to adjust the current wall temperature to within the preset wall temperature range.
[0111] The second control unit is specifically used to reduce the heating power of the heating component on the basis of the initial heating power if the current wall temperature is greater than the maximum value of the preset wall temperature range; if the current wall temperature is less than the minimum value of the preset wall temperature range, then increase the heating power of the heating component on the basis of the initial heating power.
[0112] The first obtaining unit is specifically used to obtain the average temperature of the evaporator within a set number of days; and determine the initial heating power corresponding to the average temperature of the evaporator according to the corresponding relationship between the evaporator temperature and the heating power.
[0113] Optionally, the control module 53 further includes a third control unit, and the third control unit is used to maintain the current heating power of the heating component unchanged if the current wall temperature is within a preset wall temperature range.
[0114] Optionally, the corresponding relationship between the air temperature and the wall temperature range includes:
[0115] The minimum value of the wall temperature range is greater than 0°C;
[0116] The maximum value of the wall temperature range is lower than the air temperature, and the higher the air temperature is, the greater the temperature difference between the air temperature and the maximum value of the wall temperature range is.
[0117] Optionally, the evaporator and the compressor in the refrigerator refrigeration system are provided with a conventional refrigerant pipeline, and the inlets of the conventional refrigerant pipeline and the condenser are connected via a switching valve.
[0118] Optionally, the condensing temperature control device of the refrigerator return air path also includes a first switching module and a second switching module; the first switching module is used to control the switching valve to connect to the condenser when air is supplied in the compartment, so that the refrigerant in the evaporator can return to the compressor through the condenser; the second switching module is used to control the switching valve to connect to the conventional refrigerant pipeline and block the condenser when no air is supplied in the compartment, so that the refrigerant returns directly from the evaporator to the compressor.
[0119] In some embodiments, the condensing temperature control device of the refrigerator return air duct includes a processor and a memory storing program instructions, and the processor is configured to execute the condensing temperature control method of the refrigerator return air duct provided in the above embodiments when executing the program instructions.
[0120] Figure 6 Schematic diagram of a condensing temperature control device for a refrigerator return air duct provided in an embodiment of the present application. Figure 6 As shown, the condensing temperature control device 60 of the refrigerator return air duct includes:
[0121] The processor 61 and the memory 62 may also include a communication interface 63 and a bus 64. The processor 61, the communication interface 63, and the memory 62 may communicate with each other through the bus 64. The communication interface 63 may be used for information transmission. The processor 61 may call the logic instructions in the memory 62 to execute the condensation temperature control method of the return air path of the refrigerator provided in the aforementioned embodiment.
[0122] In addition, the logic instructions in the memory 62 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.
[0123] The memory 62 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the methods in the embodiments of the present application. The processor 61 executes functional applications and data processing by running the software programs, instructions, and modules stored in the memory 62, that is, implementing the methods in the above method embodiments.
[0124] The memory 62 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 62 may include a high-speed random access memory and may also include a non-volatile memory.
[0125] Figure 7 It is a schematic diagram of a refrigerator provided in an embodiment of the present application.
[0126] Combination Figure 7 As shown, the refrigerator 70 includes: a refrigerator body 71, and the above-mentioned condensing temperature control device 50 (60) of the refrigerator return air duct. The condensing temperature control device 50 (60) of the refrigerator return air duct is installed on the refrigerator body 71. The installation relationship described here is not limited to placement inside the refrigerator body 71, but also includes installation connections with other components of the refrigerator 70, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the device 50 (60) of the refrigerator return air duct can be adapted to a feasible refrigerator body 71, thereby realizing other feasible embodiments.
[0127] Optionally, a return air duct is arranged between the compartment of the refrigerator 70 and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; a condenser is arranged between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is arranged in the return air duct for cooling the return air duct.
[0128] The present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured as follows:
[0129] Get the current air temperature in the return air duct;
[0130] According to the corresponding relationship between the air temperature and the wall temperature range, determine the preset wall temperature range of the return air duct wall corresponding to the current air temperature;
[0131] Control the heating power of the heating components according to the preset wall temperature range
[0132] Among them, a return air duct is arranged between the compartment and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; a condenser is arranged between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is arranged in the return air duct to cool the return air duct.
[0133] The above-mentioned computer-readable storage medium may be a transient computer-readable storage medium.
[0134] The technical solution of the embodiment of the present application can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method in the embodiment of the present application. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes, or a transient storage medium.
[0135] The above description and the accompanying drawings fully illustrate the embodiments of the present application so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to include plural forms as well. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or including (comprising) refer to the existence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or these groups. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same or similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.
[0136] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiments of the present application. Technicians can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.
[0137] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units can be only a logical function division, and there can be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, which may be located in one place or distributed on multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.
[0138] The flow chart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present application. In this regard, each square box in the flow chart or block diagram can represent a part of a module, program segment or code, and a part of a module, program segment or code includes one or more executable instructions for realizing the logical function of the specification. In some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous square boxes can actually be executed substantially in parallel, and they can also be executed in the opposite order sometimes, which can depend on the functions involved. Each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be realized by a dedicated hardware-based system that performs the function or action of the specification, or can be realized by a combination of special-purpose hardware and computer instructions.
Claims
1. A method for controlling the condensation temperature of a refrigerator return air duct, characterized in that: A return air path is provided between the compartment and the space where the evaporator is located, and a heating component is provided on the pipe wall of the return air path; a condenser is provided between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is provided in the return air path for cooling the return air path; the condensation temperature control method includes: Get the current air temperature in the return air duct; According to the corresponding relationship between the air temperature and the wall temperature range, determine the preset wall temperature range of the return air duct wall corresponding to the current air temperature; The heating power of the heating component is controlled according to the preset wall temperature range.
2. The condensation temperature control method according to claim 1, characterized in that: Control the heating power of the heating component according to the current wall temperature, including: obtaining an initial heating power of a heating component; Controlling the heating component to heat according to the initial heating power; Get the current wall temperature; If the current wall temperature exceeds the preset wall temperature range, the heating power of the heating component is adjusted based on the initial heating power to adjust the current wall temperature to within the preset wall temperature range.
3. The condensation temperature control method according to claim 2, characterized in that: If the current wall temperature exceeds the preset wall temperature range, the heating power of the heating component is adjusted based on the initial heating power, including: If the current wall temperature is greater than the maximum value of the preset wall temperature range, the heating power of the heating component is reduced based on the initial heating power; If the current wall temperature is less than the minimum value of the preset wall temperature range, the heating power of the heating component is increased based on the initial heating power.
4. The condensation temperature control method according to claim 2, characterized in that: Obtain the initial heating power of the heating element, including: Get the average evaporator temperature within the set number of days; According to the corresponding relationship between the evaporator temperature and the heating power, the initial heating power corresponding to the average evaporator temperature is determined.
5. The condensation temperature control method according to claim 2, characterized in that: Also includes: If the current wall temperature is within the preset wall temperature range, the current heating power of the heating component is maintained unchanged.
6. The condensation temperature control method according to claim 1, characterized in that: The corresponding relationship between air temperature and wall temperature range includes: The minimum value of the wall temperature range is greater than 0°C; The maximum value of the wall temperature range is lower than the air temperature, and the higher the air temperature is, the greater the temperature difference between the air temperature and the maximum value of the wall temperature range is.
7. The condensation temperature control method according to any one of claims 1 to 6, characterized in that: The evaporator and the compressor in the refrigerator refrigeration system are provided with a conventional refrigerant pipeline, and the inlets of the conventional refrigerant pipeline and the condenser are connected through a switching valve; Before obtaining the current air temperature in the return air duct, the condensing temperature control method further includes: When air is supplied to the room, the switching valve is controlled to connect the condenser pipe so that the refrigerant in the evaporator can return to the compressor through the condenser pipe; When there is no air supply in the room, the control switching valve connects the conventional refrigerant pipeline and blocks the condenser pipe, so that the refrigerant returns directly from the evaporator to the compressor.
8. A condensation temperature control device for a refrigerator return air duct, characterized in that: A return air path is provided between the compartment and the space where the evaporator is located, and a heating component is provided on the pipe wall of the return air path; a condenser is provided between the evaporator and the compressor in the refrigerator refrigeration system, and the condenser is provided in the return air path for cooling the return air path; the condensation temperature control device includes: An acquisition module is used to obtain the current air temperature in the return air duct; A determination module, for determining a preset wall temperature range of the return air duct wall corresponding to the current air temperature according to the corresponding relationship between the air temperature and the wall temperature range; The control module is used to control the heating power of the heating component according to a preset wall temperature range.
9. A condensing temperature control device for a return air duct of a refrigerator, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the condensation temperature control method of the return air duct of the refrigerator as described in any one of claims 1 to 7 when executing the program instructions.
10. A refrigerator, characterized in that: include: Refrigerator body; A return air duct is arranged between the compartment and the space where the evaporator is located, and a heating component is arranged on the pipe wall of the return air duct; A condenser is provided between the evaporator and the compressor in the refrigerator refrigeration system. The condenser is provided in the return air duct to cool the return air duct. The condensing temperature control device for the return air duct of the refrigerator as described in claim 8 or 9 is installed on the refrigerator body.