Free embedded refrigerator anti-condensation control method and system, refrigerator and medium

Abstract

The invention discloses a free embedded refrigerator condensation prevention control method and system, a refrigerator and a medium. The free embedded refrigerator condensation prevention control method comprises the steps that a temperature sensor, a humidity sensor and a condensation prevention pipe temperature sensor are arranged in the refrigerator in advance; an anti-dew pipe temperature sensor is controlled to obtain the surface temperature of an anti-dew pipe around a freezing chamber, the temperature sensor is controlled to obtain the temperature of the environment where the refrigerator is located, and a humidity sensor is controlled to obtain the humidity of the environment where the refrigerator is located; according to the temperature and humidity of the environment where the refrigerator is located, the condensation point temperature is automatically calculated; comparing the obtained surface temperature of the anti-dew pipe around the freezing chamber with the condensation point temperature to obtain the temperature difference between the beam surface temperature and the condensation point temperature; and according to the surface temperature of the anti-dew pipe on the periphery of the freezing chamber and the temperature difference, the duty ratio of a condensation fan of the refrigerator is controlled. The problem of condensation outside the refrigerator in severe environments such as high temperature and high humidity and medium temperature and high humidity is solved, and convenience is provided for use of a user.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerator heat dissipation control, and particularly to an anti-condensation control method, system, refrigerator and storage medium for a free-embedded refrigerator. Background Art

[0002] At present, the heat dissipation method of free-embedded air-cooled refrigerators on the market is bottom heat dissipation in the compressor compartment. The heat dissipation condenser is externally placed in the compressor compartment, and a fan is set beside the condenser to forcibly dissipate heat, improving the heat dissipation efficiency of the condenser.

[0003] Since this heat dissipation method dissipates heat by forcibly blowing air with a fan and has a high heat dissipation efficiency, the surface temperature of the condenser is relatively lower than the surface temperatures of the two internal condensers on both sides after the refrigerant liquefies and releases heat in the condenser. Then, the surface temperature of the anti-condensation tube will also be relatively lower after the refrigerant passes through the anti-condensation tube. At this time, the temperature in the freezer compartment is relatively low, and when the ambient temperature and humidity where the refrigerator is located are relatively harsh (for example, dry bulb temperature is 32°C and relative humidity is 85%), the temperature conducted to the outer surface of the refrigerator from the anti-condensation tube around the freezer compartment is lower than the dew point temperature of the surrounding environment, which will cause condensation on the outer surface of the refrigerator.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an anti-condensation control method, system, refrigerator and storage medium for a free-embedded refrigerator in view of the above-mentioned problems and defects of the prior art. The present invention provides a control method for preventing condensation on the outside of a free-embedded air-cooled refrigerator, solving the problem of condensation on the outside of the refrigerator in relatively harsh environments such as high temperature and high humidity and medium temperature and high humidity, and providing convenience for users.

[0006] The technical solution adopted by the present invention to solve the problem is as follows: An anti-condensation control method for a free-embedded refrigerator, which includes: Pre-setting a temperature sensor and a humidity sensor on the top of the refrigerator respectively, and pre-setting an anti-condensation tube temperature sensor in the foaming layer of the middle beam of the refrigerator; Controlling the anti-condensation tube temperature sensor to obtain the surface temperature of the anti-condensation tube around the freezer compartment, and controlling the temperature sensor to obtain the ambient temperature where the refrigerator is located and controlling the humidity sensor to obtain the ambient humidity where the refrigerator is located; Automatically calculating the dew point temperature according to the ambient temperature and ambient humidity where the refrigerator is located; Comparing the obtained surface temperature of the anti-condensation tube around the freezer compartment with the dew point temperature to obtain the temperature difference between the surface temperature of the beam and the dew point temperature; According to the surface temperature of the anti-condensation pipe around the freezer compartment and the temperature difference, control the duty ratio of the condenser fan of the refrigerator so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin.

[0007] The anti-condensation control method for the free-embedded refrigerator, wherein the step of controlling the duty ratio of the condenser fan according to the surface temperature of the anti-condensation pipe around the freezer compartment and the temperature difference so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a margin includes: Control the heat dissipation load of the condenser by controlling the rotation speed of the condenser fan to adjust the surface temperature of the heat dissipation pipe, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a margin within positive 3 degrees to achieve anti-condensation control.

[0008] The anti-condensation control method for the free-embedded refrigerator, wherein the step of controlling the duty ratio of the condenser fan of the refrigerator according to the surface temperature of the anti-condensation pipe around the freezer compartment and the temperature difference so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin includes: When the refrigerator is in the refrigeration state, when the surface temperature of the anti-condensation pipe around the freezer compartment collected by the anti-condensation pipe sensor is lower than the dew point temperature at the temperature and humidity of the refrigerator by a first specified temperature, control to reduce the rotation speed of the condenser fan to a specified rotation speed; When the surface temperature of the anti-condensation pipe around the freezer compartment collected by the anti-condensation pipe sensor is higher than the dew point temperature at the temperature and humidity of the refrigerator by a second specified temperature, control to keep the rotation speed of the condenser fan running at this time unchanged.

[0009] The anti-condensation control method for the free-embedded refrigerator, wherein the step of controlling the duty ratio of the condenser fan of the refrigerator according to the surface temperature of the anti-condensation pipe around the freezer compartment and the temperature difference so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin includes: When the refrigerator is in the refrigeration state, when the surface temperature of the anti-condensation pipe around the freezer compartment collected by the anti-condensation pipe sensor is lower than the dew point temperature at the temperature and humidity of the refrigerator +1°C, control to reduce the rotation speed of the condenser fan to a fan duty ratio of 45%; wherein, the fan duty ratio is the fan rotation speed.

[0010] The anti-condensation control method for the free-embedded refrigerator, wherein the step of controlling the duty ratio of the condenser fan of the refrigerator according to the surface temperature of the anti-condensation pipe around the freezer compartment and the temperature difference so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin includes: When the surface temperature of the anti-condensation pipe around the freezer compartment collected by the anti-condensation pipe sensor is lower than the dew point temperature at the temperature and humidity of the refrigerator +2°C, control to reduce the rotation speed of the condenser fan to a fan duty ratio of 55%. The anti-condensation control method for the built-in refrigerator, wherein the step of controlling the duty ratio of the condensation fan of the refrigerator according to the surface temperature of the anti-condensation tubes around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin includes: When the surface temperature of the anti-condensation tubes around the freezer compartment collected by the anti-condensation tube sensor is lower than the dew point temperature + 3°C at the temperature and humidity where the refrigerator is located, control to reduce the rotation speed of the condensation fan to a fan duty ratio of 65%.

[0011] The anti-condensation control method for the built-in refrigerator, wherein the step of controlling the duty ratio of the condensation fan of the refrigerator according to the surface temperature of the anti-condensation tubes around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin includes: When the refrigerator is in the refrigeration state, when the surface temperature of the anti-condensation tubes around the freezer compartment collected by the anti-condensation tube sensor is higher than the dew point temperature + 3°C at the temperature and humidity where the refrigerator is located, control to keep the rotation speed of the condensation fan running at this time unchanged; The fan duty ratio represents the fan rotation speed. When the duty ratio is high, it corresponds to a high rotation speed of the condensation fan, and when the duty ratio is low, it corresponds to a low rotation speed of the condensation fan.

[0012] An anti-condensation control system for a built-in refrigerator, wherein the system includes: A preset module, used to preset a temperature sensor and a humidity sensor on the top of the refrigerator respectively, and to preset an anti-condensation tube temperature sensor in the foaming layer of the middle beam of the refrigerator; A temperature acquisition module, used to control the anti-condensation tube temperature sensor to acquire the surface temperature of the anti-condensation tubes around the freezer compartment, and to control the temperature sensor to acquire the ambient temperature where the refrigerator is located and control the humidity sensor to acquire the ambient humidity where the refrigerator is located; A dew point temperature calculation module, used to automatically calculate the dew point temperature according to the ambient temperature and ambient humidity where the refrigerator is located; A temperature difference determination module, used to compare the acquired surface temperature of the anti-condensation tubes around the freezer compartment with the dew point temperature to obtain the temperature difference between the surface temperature of the beam and the dew point temperature; A condensation fan rotation speed adjustment and control module, used to control the duty ratio of the condensation fan of the refrigerator according to the surface temperature of the anti-condensation tubes around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin.

[0013] A refrigerator, comprising a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, and the one or more programs include those for executing any of the methods described above.

[0014] A computer-readable storage medium, wherein when instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute any of the methods described above.

[0015] Advantages of the present invention: The present invention provides a method and system for controlling anti-condensation of a freely embedded refrigerator, the refrigerator and the storage medium. The present invention controls the heat dissipation load of the condenser by the rotational speed of the condensation fan, thereby adjusting the surface temperature of the heat dissipation pipe, so that the outer surface temperature around the freezer is always not lower than the dew point temperature and has a margin, ensuring that the condensation-prone parts of the refrigerator do not cause condensation in any use environment, providing convenience for users. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1a and Figure 1b is a schematic structural diagram of the compressor compartment of the refrigerator.

[0018] Figure 2 is a schematic flow chart of a method for controlling anti-condensation of a freely embedded refrigerator provided by an embodiment of the present invention.

[0019] Figure 3 is a schematic block diagram of the implementation principle of the method for controlling anti-condensation of a freely embedded refrigerator provided by an embodiment of the present invention.

[0020] Figure 4 A schematic block diagram of the principle of an embodiment of the anti-condensation control system for a freely embedded refrigerator provided by the present invention.

[0021] Figure 5 is a schematic block diagram of the internal structure principle of the refrigerator provided by an embodiment of the present invention. Detailed Embodiments

[0022] To make the purpose, technical solutions and advantages of the present invention clearer and more definite, the following will further describe the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] As Figure 1a and Figure 1b shown, for the current market's free-embedded air-cooled refrigerator, the heat dissipation method is to dissipate heat at the bottom inside the compressor compartment 100. A compressor 101 is provided inside the compressor compartment 100, and the heat dissipation condenser 110 is externally placed inside the compressor compartment 100. A condensation fan 120 is arranged beside the heat dissipation condenser 110 to forcibly dissipate heat and improve the heat dissipation efficiency of the condenser.

[0024] Regarding the problem of external condensation of existing refrigerators in relatively harsh environments such as high temperature and high humidity and medium temperature and high humidity. The present invention provides a method, a system, a refrigerator and a storage medium for preventing condensation in a free-embedded refrigerator. The present invention controls the heat dissipation load of the condenser by the rotation speed of the condensation fan, thereby adjusting the surface temperature of the heat dissipation pipe, so that the outer surface temperature around the freezer is always not lower than the dew point temperature and has a margin, ensuring that the easily condensable parts of the refrigerator do not cause condensation in any use environment, providing convenience for users.

[0025] Specifically as Figure 2 shown, a method for preventing condensation control of a free-embedded refrigerator provided by an embodiment of the present invention includes the following steps: S100. Pre-set a temperature sensor and a humidity sensor on the top of the refrigerator respectively, and pre-set a dew prevention pipe temperature sensor in the foaming layer of the middle beam of the refrigerator; In an embodiment of the present invention, a temperature sensor is installed on the top of the refrigerator to monitor the change of the ambient temperature of the refrigerator in real time. And setting a humidity sensor on the top of the refrigerator can monitor the current humidity level of the environment of the refrigerator.

[0026] And the present invention sets a dew prevention pipe temperature sensor in the foaming layer of the refrigerator, and the main purpose is to monitor the temperature of the foaming layer to prevent the occurrence of condensation.

[0027] In an embodiment of the present invention, through the installation of these sensors, more accurate data can be obtained, which is convenient for the subsequent steps to adjust the operating state of the refrigerator in real time for anti-condensation control.

[0028] S200. Control the dew prevention pipe temperature sensor to obtain the surface temperature of the dew prevention pipe around the freezer, and control the temperature sensor to obtain the ambient temperature of the refrigerator where it is located, and control the humidity sensor to obtain the ambient humidity of the refrigerator where it is located; In an embodiment of the present invention, control the dew prevention pipe temperature sensor to obtain the surface temperature of the dew prevention pipe around the freezer: the surface temperature of the dew prevention pipe is crucial for preventing condensation and the formation of ice and frost.

[0029] Control the temperature sensor to obtain the ambient temperature of the refrigerator where it is currently located. Control the humidity sensor to obtain the ambient humidity of the refrigerator where it is currently located.

[0030] In the embodiment of this step, the control and data acquisition of these sensors contribute to the anti-condensation control of the refrigerator in the subsequent steps.

[0031] S300. Automatically calculate the dew point temperature according to the ambient temperature and ambient humidity of the refrigerator. The dew point temperature refers to the temperature at which water vapor in the air changes from a gaseous state to a liquid state when it reaches a saturated state. For example, the following simplified formula can be used to calculate the dew point temperature:

[0032] Where: Td is the dew point temperature, T is the ambient temperature, and RH is the relative humidity (expressed as a percentage). In the embodiment of the present invention, by real-time monitoring of the ambient temperature and humidity, the refrigerator can calculate the current dew point temperature, which is very important for the anti-condensation control of the refrigerator.

[0033] For example, when it is detected that a certain refrigerator is operating under the conditions of an ambient temperature of 25°C and a relative humidity of 70%. According to the above formula:

[0034] Calculation shows that under the current environmental conditions, the dew point temperature is 19°C. This means that if the surface temperature of the refrigerator's cooling surface is lower than 19°C, water vapor may start to condense, forming dew or frost. Therefore, the refrigerator needs to ensure that the temperature of the cooling surface is higher than this value to prevent condensation.

[0035] It can be seen that in the present invention, by knowing the dew point temperature, it is convenient for the refrigerator to control the rotation speed of the condensation fan in the subsequent steps, thereby avoiding the formation of condensation.

[0036] S400. Compare the surface temperature of the anti-condensation pipe around the freezer compartment obtained with the dew point temperature to obtain the temperature difference between the surface temperature of the beam and the dew point temperature. In the embodiment of this step, it involves comparing the surface temperature of the anti-condensation pipe around the freezer compartment with the dew point temperature.

[0037] Among them, the surface temperature of the freezer compartment: is the actual temperature of the anti-condensation pipe, reflecting the cooling effect of the freezer compartment. And the dew point temperature: this is the temperature at which water vapor in the air begins to condense into water droplets under a specific humidity. When the air temperature drops to or below this point, water vapor will appear in a liquid form.

[0038] By comparing the surface temperature of the freezer compartment with the dew point temperature, the present invention can obtain a temperature difference. If the surface temperature of the freezer compartment is lower than the dew point temperature, then condensation may occur, resulting in the formation of water droplets. Therefore, the present invention needs to actively control the surface temperature of the freezer compartment to be higher than the dew point temperature to prevent condensation.

[0039] For example, when the surface temperature of the anti-condensation tube of a household refrigerator is -5 °C, and the environmental humidity is high, resulting in a dew point temperature of -3 °C. By comparison: the surface temperature (-5 °C) is less than the dew point temperature (-3 °C): at this time, moisture is likely to condense inside the refrigerator, affecting the quality of food. Then, the present invention can actively control the surface temperature of the freezer compartment to be higher than the dew point temperature in the subsequent steps to prevent condensation, so as to ensure that: the surface temperature (-2 °C) > the dew point temperature (-3 °C): condensation can be effectively prevented from forming.

[0040] In this way, by real-time monitoring of the temperature difference, the present invention can effectively prevent the formation of condensation, avoid corrosion of the outer surface of the refrigerator, and extend the service life of the refrigerator.

[0041] S500. According to the surface temperature of the anti-condensation tubes around the freezer compartment and the temperature difference, control the duty cycle of the refrigerator's condensation fan so that the outer surface temperature around the freezer compartment always remains above the dew point temperature with a specified margin.

[0042] In the embodiment of this step, it involves controlling the duty cycle of the refrigerator's condensation fan to keep the outer surface temperature of the freezer compartment above the dew point temperature with a certain margin. This is an important measure to prevent the formation of condensation.

[0043] Among them, regarding the duty cycle of the condensation fan: the duty cycle refers to the ratio of the working time of the condensation fan to the overall cycle time. For example, if the condensation fan works for 30 seconds and pauses for 10 seconds in each cycle, then the duty cycle is 75% (30 seconds / 40 seconds). The fan duty cycle in the embodiment of the present invention is also the fan speed. A high duty cycle means a high rotation speed of the condensation fan, and a low duty cycle means a low rotation speed of the condensation fan. When the rotation speed of the condensation fan is high, the heat dissipation efficiency of the condenser is high, and the surface temperature of the anti-condensation tube is low. When the rotation speed of the condensation fan is low, the heat dissipation efficiency of the condenser is low, and the surface temperature of the anti-condensation tube is high. The present invention controls the rotation speed to lower or raise the surface temperature of the anti-condensation tube, so as to ensure that the temperature around the freezer is higher than the dew point temperature and does not condense under high temperature and high humidity.

[0044] By adjusting the duty cycle of the condensation fan, the present invention can effectively control the surface temperature of the anti-condensation tubes around the freezer compartment, keep it above the dew point temperature, prevent water vapor from condensing into water droplets, prevent condensation on the outer surface of the refrigerator, effectively prevent corrosion of the refrigerator, and extend the service life of the refrigerator.

[0045] Regarding leaving a margin, that is, when the specific implementation of the present invention is carried out, a safety margin can be set. For example, the surface temperature can be maintained at 2°C - 3°C above the dew point temperature to ensure that even in the case of temperature fluctuations or changes in environmental humidity, condensation can be effectively prevented.

[0046] For example, taking a commercial refrigerator as an example, the environmental conditions are as follows: current surface temperature of the anti-condensation pipe: 0°C; current dew point temperature: -2°C; by using the present invention, the control target is to keep the surface temperature above the dew point temperature, for example, to maintain at +1°C.

[0047] The control steps using the present invention are as follows: If it is measured and compared and found that the surface temperature (0°C) is higher than the dew point temperature (-2°C), the duty cycle of the condensing fan can be controlled to be reduced from 80% to 60%. In this way, the surface temperature may rise slightly to slightly better than +1°C.

[0048] In a high-humidity environment, if the dew point temperature rises to -1°C, the condensing fan may need to increase the duty cycle, for example, to be adjusted to 70% again, to ensure that the surface temperature of the anti-condensation pipe remains above 0°C.

[0049] In this way, through this method of the embodiment of the present invention, the refrigerator can not only effectively avoid the influence of condensation on the quality of internal food, but also achieve energy-saving and efficient operation. This intelligent temperature control scheme makes the use effect of household or commercial refrigerators reach the best.

[0050] As can be seen from the above, through adjusting the duty cycle, the embodiment of the present invention can make more efficient use of the condensing fan and avoid unnecessary energy consumption. The fan only works when necessary, thereby optimizing the energy efficiency of the refrigerator. And effective control can always keep the surface temperature of the freezer outer surface within a safe range, thereby minimizing the occurrence of condensation to the greatest extent. And continuous temperature control can reduce the burden on the condensing fan and the refrigeration system, and extend the service life of the equipment.

[0051] In a further embodiment of the present invention, the step of controlling the duty cycle of the condensing fan according to the surface temperature of the anti-condensation pipes around the freezer and the temperature difference, so that the outer surface temperature around the freezer always remains above the dew point temperature and leaves a margin includes: By controlling the rotation speed of the condensing fan to control the heat dissipation load of the condenser, so as to adjust the surface temperature of the heat dissipation pipe, so that the outer surface temperature around the freezer always remains above the dew point temperature and leaves a margin within positive 3 degrees, achieving anti-condensation control.

[0052] In the embodiment of the present invention, the rotation speed of the condensing fan determines the air flow speed of the condenser. The higher the rotation speed, the faster the air flow, and the better the heat dissipation effect of the condenser.

[0053] Regarding the heat dissipation load, it is the heat that the condenser needs to dissipate. Under different working environments and load conditions, the heat dissipation load will vary. Controlling the rotational speed of the condenser fan can effectively adjust the heat dissipation load to adapt to the current environmental conditions.

[0054] And the surface temperature control includes: Dew point temperature: This is the temperature at which water vapor in the air begins to condense into water droplets.

[0055] Temperature margin: To ensure that condensation does not occur, the surface temperature around the freezer compartment needs to be within 3 degrees higher than the dew point temperature. For example, if the dew point temperature is -2°C, the surface temperature should be at least +1°C (with a 3-degree margin) to prevent moisture from condensing on the outer surface of the freezer.

[0056] It can be seen that by adjusting the rotational speed of the condenser fan, the present invention can achieve more precise temperature control, thereby better preventing condensation. Under different working conditions, automatically adjusting the rotational speed of the fan can keep the temperature within the optimal range. Moreover, adjusting the rotational speed of the condenser fan according to actual needs can effectively reduce energy consumption, avoid the fan running at high speed when unnecessary, thereby reducing electricity expenses. And a reasonable working load of the condenser can reduce equipment wear, thereby extending the service life of the condenser fan and the condenser.

[0057] In a further embodiment of the present invention, in the anti-condensation control method for a free-embedded refrigerator, the step of controlling the duty cycle of the refrigerator's condenser fan according to the surface temperature of the anti-condensation tube around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment always remains above the dew point temperature and has a specified margin includes: When the refrigerator is in the refrigeration state, when the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is lower than the condensation dew point temperature at the temperature and humidity of the refrigerator by a first specified temperature, control to reduce the rotational speed of the condenser fan to a specified rotational speed; When the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is higher than the condensation dew point temperature at the temperature and humidity of the refrigerator by a second specified temperature, control to keep the rotational speed of the condenser fan running at this time unchanged.

[0058] When the specific implementation of the embodiment of the present invention is carried out, an anti-condensation tube temperature acquisition sensor can be set to adjust the heat dissipation system corresponding to the temperature sensor and the humidity sensor; among them, the temperature sensor and the humidity sensor are on the top of the refrigerator, the anti-condensation tube sensor is in the foaming layer of the middle beam of the refrigerator, and the temperature and humidity sensor adjusts the heat dissipation system according to the steps of the above method embodiment to compile a main control program of the refrigerator for control. As Figure 3As shown, the temperature sensor, the temperature sensor, and the anti-condensation tube sensor are respectively connected to the acquisition module. The main control program of the refrigerator controls the ambient temperature sensor to collect the ambient temperature where the refrigerator is located, the ambient humidity sensor to collect the relative humidity where the refrigerator is located, and the anti-condensation tube sensor to collect the temperature of the surface of the anti-condensation tube around the freezer compartment. The main control program of the refrigerator controls the calculation module to calculate the (condensation) dew point temperature, and then, based on the calculated (condensation) dew point temperature, controls the execution module to adjust the duty cycle (speed) of the condensation fan.

[0059] During specific implementation, the on / off and speed of the condensation fan can be adjusted by collecting the dry bulb temperature, relative humidity, and the temperature of the outer surface of the anti-condensation tube where the refrigerator is located through the temperature and humidity sensor and the anti-condensation sensor. Among them, the dry bulb temperature is the ambient temperature, relative humidity, and the temperature of the surface of the anti-condensation tube where the refrigerator is located.

[0060] In this specific embodiment, when the refrigerator is in the refrigeration state: when the surface temperature collected by the anti-condensation tube sensor is lower than the dew point temperature + 3°C at the temperature and humidity where the refrigerator is located, the speed of the condensation fan is reduced. Correspondingly, when the surface temperature collected by the anti-condensation tube sensor is higher than the dew point temperature + 3°C at the temperature and humidity where the refrigerator is located, the speed of the condensation fan running at this time is maintained. Regarding maintaining the constant speed of the condensation fan when it is 3 degrees higher than the dew point temperature of rain, because the dew point temperature is the lowest temperature at which no condensation occurs under the temperature and humidity conditions where the refrigerator is located, 3 degrees is to ensure a margin space, and it can also be 2 degrees; being 3 degrees higher can basically ensure no condensation. Being 3 degrees lower has the risk of condensation.

[0061] Therefore, the present invention controls the heat dissipation load of the condenser by the speed of the condensation fan, thereby adjusting the surface temperature of the heat dissipation tube, so that the temperature of the outer surface around the freezer compartment is always not lower than the dew point temperature and has a margin, ensuring that the easily condensable parts of the refrigerator do not cause condensation in any usage environment.

[0062] In a further embodiment, the present invention provides an anti-condensation control method for a free-embedded refrigerator. In the embodiment of the present invention, the ambient temperature sensor is used to collect the ambient temperature where the refrigerator is located, the ambient humidity sensor is used to collect the relative humidity where the refrigerator is located, and the anti-condensation tube sensor is used to collect the temperature of the surface of the anti-condensation tube around the freezer compartment.

[0063] When the refrigerator is in the refrigeration state, when the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is lower than the condensation dew point temperature + 1°C at the temperature and humidity where the refrigerator is located, control the speed of the condensation fan to be reduced to a fan duty cycle of 45%; among them, the fan duty cycle is the fan speed. The purpose of this step embodiment is to, under the refrigeration state of the freezer compartment, monitor the surface temperature of the anti-condensation tube and dynamically adjust the speed of the condensation fan according to the relationship between the temperature and the condensation dew point to effectively prevent the occurrence of condensation.

[0064] Among them, the anti-condensation tube sensor is responsible for real-time monitoring of the surface temperature of the anti-condensation tube around the freezer compartment. Its function is to provide data on the current ambient temperature for subsequent control.

[0065] The dew point temperature is the temperature at which water vapor in humid air begins to condense into water droplets. Under the operating conditions of the refrigerator, the dew point temperature is affected by the temperature and humidity inside the cabinet.

[0066] And in this step of the embodiment, a temperature threshold is set, that is, "dew point temperature + 1°C". When the surface temperature of the anti-condensation tube is lower than this threshold, it indicates that the outer surface of the freezer compartment is approaching the risk of condensation.

[0067] Then start the control system: control to reduce the fan speed, that is, if the sensor detects that the surface temperature of the anti-condensation tube is lower than the above temperature threshold, it is necessary to adjust the working mode of the condensation fan to reduce the cooling capacity.

[0068] Regarding adjusting the fan duty cycle to 45%, that is, adjusting the duty cycle (also known as the working ratio) of the fan to 45%, that is, controlling the fan speed to work at a 45% speed state. Reducing the speed will reduce the cooling effect of the fan, causing the condenser temperature to rise and helping to prevent the surface temperature from being too low.

[0069] For example, when the current ambient conditions of a refrigerator are: Ambient temperature around the freezer compartment: -5°C; Ambient humidity: high, resulting in a dew point temperature of -3°C; According to the above conditions: Temperature threshold: dew point temperature + 1°C = -2°C.

[0070] Temperature measured by the anti-condensation tube sensor: -3.5°C.

[0071] When the surface temperature of the anti-condensation tube collected by the sensor is -3.5°C (lower than the threshold of -2°C), the system will perform the following operations: Reduce the speed of the condensation fan: To prevent further cooling, the system immediately adjusts the speed of the condensation fan to reach a duty cycle of 45%. As a result, after using the present invention: the reduction of the fan speed weakens the heat dissipation capacity of the condenser, and the surface temperature of the anti-condensation tube may rise to slightly higher than -2°C, reducing the condensation risk.

[0072] Through this real-time monitoring and adjustment method, the refrigerator can effectively prevent the condensation problem caused by the humid environment while maintaining appropriate refrigeration; Similarly, in the embodiment of the present invention, when the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is lower than the dew point temperature + 2°C under the temperature and humidity of the refrigerator, control to reduce the speed of the condensation fan to a fan duty cycle of 55%; When the surface temperature of the anti-condensation tubes around the freezer compartment collected by the anti-condensation tube sensor is lower than the dew point temperature + 3°C at the temperature and humidity where the refrigerator is located, control the condensation fan speed to be reduced to a fan duty cycle of 65%; Correspondingly, when the surface temperature collected by the anti-condensation tube sensor is higher than the dew point temperature + 3°C at the temperature and humidity where the refrigerator is located, keep the rotation speed of the condensation fan running at this time unchanged. Because, at this time, the surface temperature is already 3 degrees higher than the dew point temperature, so condensation will definitely not be caused, so there is no need to change the rotation speed and just keep it; Control the heat dissipation load of the condenser by adjusting the rotation speed of the condensation fan, so as to adjust the surface temperature of the heat dissipation tubes, so that the outer surface temperature around the freezer compartment is always not lower than the dew point temperature and has a margin, ensuring that the easily condensable parts of the refrigerator do not cause condensation in any usage environment.

[0073] And the present invention also has the following advantages: 1) Prevent condensation: By dynamically adjusting the fan speed, prevent water vapor in the air from condensing on the surface of the freezer compartment, thus keeping the food dry and fresh.

[0074] 2) Energy conservation: Reducing the fan speed and duty cycle can reduce power consumption and improve the energy efficiency of the refrigerator.

[0075] 3) Precise temperature control: Through real-time temperature monitoring and fan adjustment, more flexible temperature control can be achieved, keeping the freezer compartment within a suitable working range.

[0076] 4) Extend the equipment life: Reduce the load on the fan, avoid running at full load for a long time, help extend its service life, and thus reduce maintenance and replacement costs.

[0077] Exemplary device Such as Figure 4 As shown, the embodiment of the present invention provides an anti-condensation control system for a freely embedded refrigerator, and the system includes: A preset module 310, configured to preset a temperature sensor and a humidity sensor on the top of the refrigerator respectively, and preset an anti-condensation tube temperature sensor on the foaming layer inside the middle beam of the refrigerator; A temperature acquisition module 320, configured to control the anti-condensation tube temperature sensor to acquire the surface temperature of the anti-condensation tubes around the freezer compartment, and control the temperature sensor to acquire the ambient temperature where the refrigerator is located, and control the humidity sensor to acquire the ambient humidity where the refrigerator is located; A dew point temperature calculation module 330, configured to automatically calculate the dew point temperature according to the ambient temperature and ambient humidity where the refrigerator is located; A temperature difference determination module 340, configured to compare the acquired surface temperature of the anti-condensation tubes around the freezer compartment with the dew point temperature to obtain the temperature difference between the beam surface temperature and the dew point temperature; The condensation fan speed regulation control module 350 is used to control the duty cycle of the refrigerator's condensation fan according to the surface temperature of the anti-condensation tubes around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin, as described above.

[0078] Based on the above embodiments, the present invention also provides a refrigerator, and its principle block diagram can be as Figure 5 shown. The refrigerator includes a processor, a memory, a network interface, a display screen, and a database connected through a system bus. Among them, the processor of the refrigerator is used to provide computing and control capabilities. The memory of the refrigerator includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the refrigerator is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it realizes a free-embedded refrigerator anti-condensation control method. The database of the refrigerator is used to store the free-embedded refrigerator anti-condensation control program.

[0079] Those skilled in the art can understand that Figure 5 the principle block diagram shown in

[0080] merely shows the block diagram of some structures related to the solution of the present invention, and does not constitute a limitation on the refrigerator to which the solution of the present invention is applied. A specific refrigerator may include more or fewer components than shown in the figure, or combine some components, or have a different component layout. Pre-set a temperature sensor and a humidity sensor on the top of the refrigerator respectively, and pre-set an anti-condensation tube temperature sensor in the foaming layer of the middle beam of the refrigerator; Control the anti-condensation tube temperature sensor to obtain the surface temperature of the anti-condensation tubes around the freezer compartment, and control the temperature sensor to obtain the ambient temperature of the refrigerator and control the humidity sensor to obtain the ambient humidity of the refrigerator; Automatically calculate the dew point temperature according to the ambient temperature and ambient humidity of the refrigerator; Compare the obtained surface temperature of the anti-condensation tubes around the freezer compartment with the dew point temperature to obtain the temperature difference between the beam surface temperature and the dew point temperature; Control the duty cycle of the refrigerator's condensation fan according to the surface temperature of the anti-condensation tubes around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin, as described above.

[0081] Among them, the step of controlling the duty ratio of the condensation fan according to the surface temperature of the anti-condensation tube around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a margin includes: Control the heat dissipation load of the condenser by controlling the rotation speed of the condensation fan to adjust the surface temperature of the heat dissipation tube, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a margin within positive 3 degrees, achieving anti-condensation control.

[0082] Among them, the step of controlling the duty ratio of the condensation fan of the refrigerator according to the surface temperature of the anti-condensation tube around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin includes: When the refrigerator is in the refrigeration state, when the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is lower than the dew point temperature at the temperature and humidity of the refrigerator by the first specified temperature, control to reduce the rotation speed of the condensation fan to the specified rotation speed; When the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is higher than the dew point temperature at the temperature and humidity of the refrigerator by the second specified temperature, control to keep the rotation speed of the condensation fan running at this time unchanged.

[0083] Among them, the step of controlling the duty ratio of the condensation fan of the refrigerator according to the surface temperature of the anti-condensation tube around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin includes: When the refrigerator is in the refrigeration state, when the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is lower than the dew point temperature at the temperature and humidity of the refrigerator by +1°C, control to reduce the rotation speed of the condensation fan to a fan duty ratio of 45%; among them, the fan duty ratio is the fan rotation speed.

[0084] When the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is lower than the dew point temperature at the temperature and humidity of the refrigerator by +2°C, control to reduce the rotation speed of the condensation fan to a fan duty ratio of 55%.

[0085] When the surface temperature of the anti-condensation tube around the freezer compartment collected by the anti-condensation tube sensor is lower than the dew point temperature at the temperature and humidity of the refrigerator by +3°C, control to reduce the rotation speed of the condensation fan to a fan duty ratio of 65%.

[0086] Among them, the step of controlling the duty ratio of the condensation fan of the refrigerator according to the surface temperature of the anti-condensation tube around the freezer compartment and the temperature difference, so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a specified margin includes: When the refrigerator is in the refrigeration state, when the surface temperature of the anti-condensation pipe around the freezer collected by the anti-condensation pipe sensor is higher than the dew point temperature + 3°C at the temperature and humidity where the refrigerator is located, control to keep the rotation speed of the condensation fan running at this time unchanged; The duty cycle of the fan represents the rotation speed of the fan. When the duty cycle is high, it corresponds to a high rotation speed of the condensation fan, and when the duty cycle is low, it corresponds to a low rotation speed of the condensation fan, as described above.

[0087] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

Claims

1. A free built-in refrigerator anti-condensation control method, characterized in that: include: A temperature sensor and a humidity sensor are pre-installed on the top of the refrigerator, and an anti-dew pipe temperature sensor is pre-installed on the foaming layer inside the refrigerator middle beam; Control the anti-dew pipe temperature sensor to obtain the surface temperature of the anti-dew pipes around the freezing chamber, control the temperature sensor to obtain the ambient temperature of the refrigerator, and control the humidity sensor to obtain the ambient humidity of the refrigerator; Automatically calculating the dew point temperature according to the ambient temperature and humidity of the refrigerator; Compare the surface temperature of the anti-dew pipe around the freezing chamber with the dew point temperature to obtain the temperature difference between the beam surface temperature and the dew point temperature; According to the surface temperature of the anti-dew pipe around the freezing chamber and the temperature difference, the duty cycle of the condensing fan of the refrigerator is controlled so that the outer surface temperature around the freezing chamber is always maintained above the dew point temperature with a specified margin.

2. The anti-condensation control method for a free built-in refrigerator according to claim 1, characterized in that: The step of controlling the duty cycle of the condensing fan according to the surface temperature of the anti-dew pipe around the freezing chamber and the temperature difference so that the outer surface temperature around the freezing chamber is always kept above the dew point temperature and a margin is left includes: The condenser heat dissipation load is controlled by controlling the condensing fan speed to adjust the surface temperature of the heat pipe so that the outer surface temperature around the freezer compartment is always kept above the dew point temperature with a margin of less than 3 degrees, thereby achieving anti-condensation control.

3. The anti-condensation control method for a free built-in refrigerator according to claim 1, characterized in that: The step of controlling the duty cycle of the condensing fan of the refrigerator according to the surface temperature of the anti-dew pipe around the freezing chamber and the temperature difference so that the outer surface temperature around the freezing chamber is always kept above the dew point temperature and a specified margin is left includes: When the refrigerator is in a refrigeration state, when the surface temperature of the anti-dew pipes around the freezing chamber collected by the anti-dew pipe sensor is lower than the dew point temperature under the temperature and humidity of the refrigerator and reaches the first specified temperature, the condensing fan speed is controlled to be reduced to the specified speed; When the surface temperature of the anti-dew pipes around the freezing chamber collected by the anti-dew pipe sensor is higher than the dew point temperature under the temperature and humidity of the refrigerator and reaches the second specified temperature, the control keeps the speed of the condensing fan unchanged.

4. The anti-condensation control method for a free built-in refrigerator according to claim 1, characterized in that: The step of controlling the duty cycle of the condensing fan of the refrigerator according to the surface temperature of the anti-dew pipe around the freezing chamber and the temperature difference so that the outer surface temperature around the freezing chamber is always kept above the dew point temperature and a specified margin is left includes: When the refrigerator is in a refrigeration state, when the surface temperature of the anti-condensation tubes around the freezer collected by the anti-condensation tube sensor is lower than the dew point temperature + 1°C under the temperature and humidity of the refrigerator, the condensation fan speed is controlled to be reduced to a fan duty cycle of 45%; wherein the fan duty cycle is the fan speed.

5. The anti-condensation control method for a free built-in refrigerator according to claim 1, characterized in that: The step of controlling the duty cycle of the condensing fan of the refrigerator according to the surface temperature of the anti-dew pipe around the freezing chamber and the temperature difference so that the outer surface temperature around the freezing chamber is always kept above the dew point temperature and a specified margin is left includes: When the surface temperature of the anti-dew pipes around the freezing chamber collected by the anti-dew pipe sensor is lower than the dew point temperature +2°C under the temperature and humidity of the refrigerator, the condensing fan speed is controlled to be reduced to a fan duty cycle of 55%.

6. The anti-condensation control method for a free built-in refrigerator according to claim 1, characterized in that: The step of controlling the duty cycle of the condensing fan of the refrigerator according to the surface temperature of the anti-dew pipe around the freezing chamber and the temperature difference so that the outer surface temperature around the freezing chamber is always kept above the dew point temperature and a specified margin is left includes: When the surface temperature of the anti-dew pipes around the freezing chamber collected by the anti-dew pipe sensor is lower than the dew point temperature +3°C under the temperature and humidity of the refrigerator, the condensing fan speed is controlled to be reduced to a fan duty cycle of 65%.

7. The anti-condensation control method for a free built-in refrigerator according to claim 1, characterized in that: The step of controlling the duty cycle of the condensing fan of the refrigerator according to the surface temperature of the anti-dew pipe around the freezing chamber and the temperature difference so that the outer surface temperature around the freezing chamber is always kept above the dew point temperature and a specified margin is left includes: When the refrigerator is in a refrigeration state, when the surface temperature of the anti-dew pipes around the freezing chamber collected by the anti-dew pipe sensor is higher than the dew point temperature +3°C under the temperature and humidity of the refrigerator, the speed of the condensing fan is controlled to remain unchanged; The fan duty cycle represents the fan speed. When the duty cycle is high, the condensing fan speed corresponds to a high speed, and when the duty cycle is low, the condensing fan speed corresponds to a low speed.

8. A free embedded refrigerator anti-condensation control system, characterized in that: The system comprises: A pre-setting module is used to pre-set a temperature sensor and a humidity sensor on the top of the refrigerator, and to pre-set an anti-dew pipe temperature sensor on the foaming layer in the middle beam of the refrigerator; The temperature acquisition module is used to control the anti-dew pipe temperature sensor to acquire the surface temperature of the anti-dew pipes around the freezing chamber, and to control the temperature sensor to acquire the ambient temperature of the refrigerator, and to control the humidity sensor to acquire the ambient humidity of the refrigerator; A dew point temperature calculation module, used to automatically calculate the dew point temperature according to the ambient temperature and humidity of the refrigerator; A temperature difference determination module, used for comparing the surface temperature of the anti-dew pipes around the freezing chamber with the dew point temperature to obtain the temperature difference between the beam surface temperature and the dew point temperature; The condensing fan speed adjustment control module is used to control the condensing fan duty cycle of the refrigerator according to the surface temperature of the anti-dew pipe around the freezer and the temperature difference, so that the outer surface temperature around the freezer is always kept above the dew point temperature with a specified margin.

9. A refrigerator, characterized in that: The device comprises a memory and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by one or more processors, and the one or more programs include being used to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the method as described in any one of claims 1 to 7.

Images