CN117704722A - Method and device for defrosting evaporator, refrigerator and computer readable storage medium - Google Patents
Method and device for defrosting evaporator, refrigerator and computer readable storage medium Download PDFInfo
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Abstract
The application relates to the technical field of refrigeration equipment and discloses a method for defrosting an evaporator, wherein a heating device and a temperature sensor are arranged on the surface of the evaporator; the method comprises the following steps: under the condition of entering a defrosting mode, controlling the heating device to start running; controlling a temperature sensor to continuously detect the temperature of the evaporator coil and acquiring the temperature change rate of the temperature of the evaporator coil; and adjusting the operation power of the heating device according to the change condition of the temperature change rate in the preset period every interval of the preset period. According to the method and the device, the change condition of the temperature change rate can be analyzed periodically, the current integral defrosting process can be mastered, and then the running power of the heating device can be adjusted, so that the heating device is matched with the heat requirement corresponding to the defrosting process. On one hand, the defrosting time can be shortened, the refrigerating effect of the refrigerator can be guaranteed, on the other hand, the room temperature rise can be reduced, and the power consumption of the refrigerator can be saved. The application also discloses a device for defrosting the evaporator, a refrigerator and a computer readable storage medium.
Description
Technical Field
The present application relates to the technical field of refrigeration equipment, for example, to a method and an apparatus for defrosting an evaporator, a refrigerator and a computer readable storage medium.
Background
At present, in the running process of refrigeration equipment such as a refrigerator and the like, the surface of an evaporator of the refrigeration equipment gradually appears frosting. When the frost layer is accumulated to a certain extent, the storage temperature of the refrigerator compartment is affected. Therefore, the refrigerator needs to be periodically defrosted. Based on this, related art proposes an air-cooled refrigerator and a defrosting control method thereof, including: acquiring the current defrosting temperature detected by a temperature sensor; wherein the temperature sensor is arranged on the surface of the evaporator; calculating the current temperature rise rate according to the current defrosting temperature; comparing the current defrosting temperature with a preset temperature threshold value to obtain a temperature comparison result; comparing the current temperature rise rate with a preset temperature rise rate threshold value to obtain a temperature rise comparison result; and controlling the defrosting power of the defrosting heater of the refrigerator according to the temperature comparison result and the temperature rise comparison result.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the related technology can shorten the defrosting time, reduce the defrosting power consumption and minimize the influence on the room temperature. However, the temperature sensor can detect the temperature condition of only a partial area, which is often greatly different from the temperature condition of the defrosting heater mounting area, so that the related art cannot accurately grasp the overall defrosting condition. The defrosting power is not proper due to uneven defrosting, so that the defrosting efficiency and the operation energy consumption of the refrigerator are affected.
It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a method and a device for defrosting an evaporator, a refrigerator and a computer readable storage medium, which can shorten defrosting time on one hand, be beneficial to guaranteeing refrigeration effect of the refrigerator, and reduce room temperature rise on the other hand, and be beneficial to saving power consumption of the refrigerator.
In some embodiments, the evaporator surface is provided with a heating device and a temperature sensor; the method comprises the following steps: under the condition of entering a defrosting mode, controlling the heating device to start running; controlling a temperature sensor to continuously detect the temperature of the evaporator coil and acquiring the temperature change rate of the temperature of the evaporator coil; and adjusting the operation power of the heating device according to the change condition of the temperature change rate in the preset period every interval of the preset period.
In some embodiments, the apparatus comprises: a processor and a memory storing program instructions, the processor being configured to perform the above-described method for defrosting an evaporator when the program instructions are run.
In some embodiments, the refrigerator includes: a refrigerator body including an evaporator; the heating device is arranged on the surface of the evaporator; the temperature sensor is arranged on the surface of the evaporator; the device for defrosting the evaporator is arranged on the refrigerator body and is respectively and electrically connected with the heating device and the temperature sensor.
In some embodiments, the computer readable storage medium stores program instructions that, when executed, are to cause a computer to perform the above-described method for evaporator defrosting.
The method, the device, the refrigerator and the computer readable storage medium for defrosting the evaporator provided by the embodiment of the disclosure can realize the following technical effects:
in the embodiment of the disclosure, when the refrigerator enters the defrosting mode, the heating device is controlled to start to operate, so that the frost layer on the evaporator can be gradually melted by using heat generated by the heating device. After the heating device is started to operate for a period of time, the embodiment of the disclosure controls the temperature sensor to start working, continuously detects the temperature of the evaporator coil, and then obtains the temperature change rate of the temperature of the evaporator coil according to the temperature change rate. With the continuous heating of the heating device, the frost layer becomes thinner gradually, and the thermal resistance to the temperature sensor is reduced accordingly, so that the corresponding heat conduction rate is increased gradually. Therefore, the embodiment of the disclosure can grasp the current integral defrosting process by periodically analyzing the change condition of the temperature change rate, and can adaptively adjust the running power of the heating device so as to match the heat requirement corresponding to the defrosting process. According to the embodiment of the disclosure, on one hand, defrosting time can be shortened, the refrigerating effect of the refrigerator is guaranteed, on the other hand, room temperature rise can be reduced, and the power consumption of the refrigerator is saved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic illustration of a method for defrosting an evaporator provided in an embodiment of the disclosure;
FIG. 2 is a schematic diagram of another method for evaporator defrosting provided by embodiments of the present disclosure;
FIG. 3 is a schematic illustration of another method for evaporator defrosting provided by embodiments of the present disclosure;
FIG. 4 is a schematic illustration of another method for evaporator defrosting provided by embodiments of the present disclosure;
FIG. 5 is a schematic view of an apparatus for defrosting an evaporator provided in an embodiment of the disclosure;
fig. 6 is a schematic view of a refrigerator provided in an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
At present, in the running process of refrigeration equipment such as a refrigerator and the like, the surface of an evaporator of the refrigeration equipment gradually appears frosting. When the frost layer is accumulated to a certain extent, the storage temperature of the refrigerator compartment is affected. Therefore, the refrigerator needs to be periodically defrosted. Based on this, related art proposes an air-cooled refrigerator and a defrosting control method thereof, including: acquiring the current defrosting temperature detected by a temperature sensor; wherein the temperature sensor is arranged on the surface of the evaporator; calculating the current temperature rise rate according to the current defrosting temperature; comparing the current defrosting temperature with a preset temperature threshold value to obtain a temperature comparison result; comparing the current temperature rise rate with a preset temperature rise rate threshold value to obtain a temperature rise comparison result; and controlling the defrosting power of the defrosting heater of the refrigerator according to the temperature comparison result and the temperature rise comparison result.
The related technology can shorten the defrosting time, reduce the defrosting power consumption and minimize the influence on the room temperature. However, the temperature sensor can detect the temperature condition of only a partial area, which is often greatly different from the temperature condition of the defrosting heater mounting area, so that the related art cannot accurately grasp the overall defrosting condition. The defrosting power is not proper due to uneven defrosting, so that the defrosting efficiency and the operation energy consumption of the refrigerator are affected. And the frosting working conditions of the refrigerators with different types and volumes are greatly different, and the temperature threshold value and the temperature rise rate threshold value which are required to be set are also greatly different. Therefore, the related art relies on the configuration of the correlation threshold, and is poor in versatility.
As shown in connection with fig. 1, an embodiment of the present disclosure provides a method for defrosting an evaporator, comprising:
s101, under the condition that a defrosting mode is entered, the processor controls the heating device to start operation.
S102, the processor controls the temperature sensor to continuously detect the temperature of the evaporator coil, and obtains the temperature change rate of the temperature of the evaporator coil.
S103, every preset period, the processor adjusts the operation power of the heating device according to the change condition of the temperature change rate in the preset period.
By adopting the method for defrosting the evaporator, which is provided by the embodiment of the invention, when the refrigerator enters the defrosting mode, the heating device is controlled to start to operate, so that the frost layer on the evaporator can be gradually melted by utilizing the heat generated by the heating device. After the heating device is started to operate for a period of time, the embodiment of the disclosure controls the temperature sensor to start working, continuously detects the temperature of the evaporator coil, and then obtains the temperature change rate of the temperature of the evaporator coil according to the temperature change rate. With the continuous heating of the heating device, the frost layer becomes thinner gradually, and the thermal resistance to the temperature sensor is reduced accordingly, so that the corresponding heat conduction rate is increased gradually. Therefore, the embodiment of the disclosure can grasp the current integral defrosting process by periodically analyzing the change condition of the temperature change rate, and can adaptively adjust the running power of the heating device so as to match the heat requirement corresponding to the defrosting process. According to the embodiment of the disclosure, on one hand, defrosting time can be shortened, the refrigerating effect of the refrigerator is guaranteed, on the other hand, room temperature rise can be reduced, and the power consumption of the refrigerator is saved.
Optionally, in case of entering the defrosting mode, the processor controls the heating device to start operation, including: under the condition of entering a defrosting mode, the processor determines a target preheating duration according to the entering temperature of the defrosting mode; the processor controls the heating device to start and operates the target preheating duration according to the rated power. Thus, when the refrigerator enters the defrosting mode, the embodiment of the disclosure can judge the specific frosting degree on the evaporator according to the entering temperature of the defrosting mode, and can determine the target preheating duration of the defrosting mode according to the specific frosting degree. By starting the heating device and enabling the heating device to run at rated power for target preheating time, the defrosting efficiency of the defrosting initial stage can be improved through preheating, the defrosting time is shortened, and the refrigerating effect of the refrigerator is guaranteed.
Optionally, the processor controls the temperature sensor to continuously detect the evaporator coil temperature and obtains a temperature change rate of the evaporator coil temperature, comprising: the temperature sensor is controlled to detect the temperature of the evaporator coil after the preset time interval of the processor; the processor calculates the difference between the temperatures of the evaporator coils detected in two adjacent times, and calculates the ratio of the difference to the preset time length to obtain the temperature change rate of the temperatures of the evaporator coils. In this way, the embodiment of the disclosure can detect the temperature of the evaporator coil once every preset time, and can accordingly obtain the temperature change rate of the temperature of the evaporator coil within the preset time, thereby being beneficial to grasping the integral defrosting process so as to accurately analyze the current heat demand.
Alternatively, the preset time period may be set according to a historic defrosting time period of the evaporator. Preferably, the preset time period may be set to 2s to control the frequency of detection of the evaporator coil temperature. The preset time length can also be adjusted according to the actual demands of users, and can be set to be 1s or 4s or any other reasonable value.
Alternatively, the preset period may be set according to a historic defrosting duration of the evaporator. And the preset period is n times of the preset duration, and n is more than 1. Preferably, the preset period may be set to 10s to control the frequency of adjustment of the operating power of the heating device. The preset period can also be adjusted according to the actual demands of users, and can be set to be 5s or 20s or any other reasonable value.
Optionally, the processor adjusts the operating power of the heating device according to the change condition of the temperature change rate in the preset period, including: under the condition that the temperature change rate increases in a preset period, the processor adjusts the operation power of the heating device according to a first heating rule; or under the condition that the temperature change rate is not increased in a preset period, the processor adjusts the operation power of the heating device according to the second heating rule. Thus, when the temperature change rate increases in a preset period, the heat conduction rate is gradually increased, and the melting and thinning of the frost layer are correspondingly performed. Because the heat conduction rate is too high and heat is wasted, the operation power of the heating device is adjusted according to the first heating rule, the operation power of the heating device is properly reduced to match the gradually reduced defrosting heat demand, and therefore heat waste and intermittent temperature fluctuation caused by the fact that the operation power of the heating device is too high can be avoided. And when the temperature change rate is not increased in the preset period, the heat conduction rate is gradually reduced, and the process of reducing the operating power of the heating device is correspondingly performed. Since the defrosting duration is increased due to the fact that the heat conduction rate is too low, the embodiment of the disclosure adjusts the operating power of the heating device according to the second heating rule, and the operating power of the heating device is properly raised, so that defrosting efficiency is improved, and defrosting duration is shortened. Therefore, the embodiment of the disclosure can grasp the current integral defrosting process by periodically analyzing the change condition of the temperature change rate, and alternately adjust the operation power of the heating device by mutually matching the first heating rule and the second heating rule, so that the operation power can be matched with the continuously-changing defrosting heat demand. Therefore, the defrosting time can be shortened, the refrigerating effect of the refrigerator can be guaranteed, the room temperature rise can be reduced, and the power consumption of the refrigerator can be saved.
Optionally, the method for defrosting an evaporator further comprises: the processor controls the heating device to stop operating in the event that the evaporator coil temperature is greater than or equal to the exit temperature of the defrost mode. Thus, when the evaporator coil temperature is greater than or equal to the exit temperature of the defrost mode, it is indicated that the frost layer on the evaporator has completely melted at this time. Therefore, the embodiment of the disclosure controls the heating device to stop running, so that heat waste can be reduced, and power consumption of the refrigerator can be saved. Meanwhile, the fluctuation of the room temperature caused by continuous heating can be avoided, and the adverse effect on the refrigerating effect of the food materials can be eliminated.
As shown in connection with fig. 2, an embodiment of the present disclosure provides another method for defrosting an evaporator, comprising:
s201, when the defrosting mode is entered, the processor controls the heating device to start operation.
S202, the processor controls the temperature sensor to continuously detect the temperature of the evaporator coil, and obtains the temperature change rate of the temperature of the evaporator coil.
S203, under the condition that the temperature change rate increases in a preset period, the processor adjusts the operation power of the heating device according to the first heating rule. And returns to step S202.
S204, under the condition that the temperature change rate is not increased in a preset period, the processor adjusts the operation power of the heating device according to a second heating rule. And returns to step S202.
By adopting the method for defrosting the evaporator, which is provided by the embodiment of the invention, when the refrigerator enters the defrosting mode, the heating device is controlled to start to operate, so that the frost layer on the evaporator can be gradually melted by utilizing the heat generated by the heating device. After the heating device is started to operate for a period of time, the embodiment of the disclosure controls the temperature sensor to start working, continuously detects the temperature of the evaporator coil, and then obtains the temperature change rate of the temperature of the evaporator coil according to the temperature change rate. With the continuous heating of the heating device, the frost layer becomes thinner gradually, and the thermal resistance to the temperature sensor is reduced accordingly, so that the corresponding heat conduction rate is increased gradually. Therefore, the embodiment of the disclosure can grasp the current integral defrosting process by periodically analyzing the change condition of the temperature change rate. When the temperature change rate increases in a preset period, the heat conduction rate is gradually increased, and the process corresponds to the defrosting process that the frost layer is melted and gradually thinned. Because the heat conduction rate is too high and heat is wasted, the operation power of the heating device is adjusted according to the first heating rule, the operation power of the heating device is properly reduced to match the gradually reduced defrosting heat demand, and therefore heat waste and intermittent temperature fluctuation caused by the fact that the operation power of the heating device is too high can be avoided. And when the temperature change rate is not increased in the preset period, the heat conduction rate is gradually reduced, and the process of reducing the operating power of the heating device is correspondingly performed. Since the defrosting duration is increased due to the fact that the heat conduction rate is too low, the embodiment of the disclosure adjusts the operating power of the heating device according to the second heating rule, and the operating power of the heating device is properly raised, so that defrosting efficiency is improved, and defrosting duration is shortened. Therefore, the embodiment of the disclosure can grasp the current integral defrosting process by periodically analyzing the change condition of the temperature change rate, and alternately adjust the operation power of the heating device by mutually matching the first heating rule and the second heating rule, so that the operation power can be matched with the continuously-changing defrosting heat demand. Therefore, the defrosting time can be shortened, the refrigerating effect of the refrigerator can be guaranteed, the room temperature rise can be reduced, and the power consumption of the refrigerator can be saved.
Optionally, the processor adjusts the operating power of the heating device according to a first heating rule, including: processor calculates P 1 ＝[1-(t n -t 1 )/(t 2 -t 1 )]*P 0 Obtaining a first target power of the heating device; the processor controls the heating device to operate at a first target power. Wherein P is 1 For a first target power of the heating means, P 0 T is the rated power of the heating device 1 For the first detected evaporator coil temperature by the temperature sensor, t n For the last detected evaporator coil temperature by the temperature sensor, t 2 Is the exit temperature for the defrost mode. Thus, when the temperature change rate increases in a preset period, the heat conduction rate is gradually increased, and the melting and thinning of the frost layer are correspondingly performed. To avoid heat waste caused by excessive heat transfer rates, embodiments of the present disclosure may calculate a first target power to be adjusted by the heating device by the above calculation formula, where the first target power is inversely related to the last detected temperature of the evaporator coil. That is, the higher the real-time temperature detected, the more frost layer is melted on the corresponding evaporator, at which time the defrosting heat demand is relatively small. Therefore, the embodiment of the disclosure can reasonably reduce the operation power of the heating device by controlling the heating device to operate according to the calculated first target power, so that the gradually reduced defrosting heat demand can be matched, and the heat waste and the fluctuation of the room temperature caused by the overhigh operation power of the heating device can be avoided.
Optionally, the processor adjusts the operating power of the heating device according to a second heating rule, including: the processor determines a second target power of the heating device according to the magnitude relation between the temperature of the evaporator coil detected by the temperature sensor last time and the preset coil temperature; the processor controls the heating device to operate at a second target power. Thus, when the temperature change rate is not increased in the preset period, the heat conduction rate is gradually reduced, which corresponds to the process of reducing the operating power of the heating device. To avoid excessively low heat transfer rates and increasing the defrosting duration, embodiments of the present disclosure may appropriately ramp up the operating power of the heating device to interact with the first heating schedule. Further, according to the embodiment of the disclosure, the current defrosting stage is judged according to the magnitude relation between the temperature of the evaporator coil detected by the temperature sensor last time and the preset coil temperature, and then the heating device is matched with the proper second target power. By controlling the heating device to intermittently operate according to the preset second target power, the defrosting efficiency can be properly improved on the basis of matching the corresponding heat requirement of the current defrosting stage, so that defrosting time is shortened.
Alternatively, the preset coil temperature may be set in combination with the exit temperature and the entry temperature of the defrost mode. Preferably, the preset coil temperature may be set to-7 ℃ to distinguish between the early and late defrosting phases. The temperature of the preset coil pipe can be adjusted according to the actual demands of users, and can be set to be any other reasonable value such as-10 ℃ or-5 ℃.
Optionally, the processor determines the second target power of the heating device according to the magnitude relation between the temperature of the evaporator coil detected by the temperature sensor last time and the preset coil temperature, including: in the case that the last detected evaporator coil temperature by the temperature sensor is less than the preset coil temperature, the processor determines that the second target power of the heating device is P 21 The method comprises the steps of carrying out a first treatment on the surface of the Alternatively, the processor determines the second target power of the heating device to be P in the event that the last detected evaporator coil temperature by the temperature sensor is greater than or equal to the preset coil temperature 22 . Wherein P is 21 ＞P 22 . Thus, when the temperature sensor detects that the temperature of the evaporator coil is lower than the preset coil temperature last time, the evaporator coil is indicated to be in the early defrosting stage currently, and the defrosting heat requirement is high. The disclosed embodiment sets a relatively high second target power P 21 To improve the defrosting efficiency of the heating device more, thereby being beneficial to shortening the defrosting time. And when the temperature sensor detects that the temperature of the evaporator coil is higher than or equal to the preset coil temperature for the last time, the evaporator coil is indicated to be in the later defrosting stage, and the defrosting heat requirement is smaller. Embodiments of the present disclosure set a relatively low second target power P 22 The defrosting efficiency of the heating device is improved within a limited range, the defrosting duration is shortened, and meanwhile, the room temperature can be controlled to rise, so that heat waste is avoided.
Alternatively, P 21 ＝a*P 0 . Preferably, a=2/3. Thus, the second target power P 21 Can match the relatively higher heat demand in early stage of defrosting, and can improve defrosting efficiency so as to shorten defrosting duration. P (P) 21 The device can also be adjusted according to the actual demands of users, and can be set to be 3/4 or 4/5 or other arbitrary reasonable values.
Alternatively, P 22 ＝b*P 0 . Preferably, a=1/2. Thus, the second target power P 22 Can match the relatively lower heat demand in the later stage of defrosting, and can improve defrosting efficiency and control room temperature rise. P (P) 22 The device can also be adjusted according to the actual demands of users, and can be set to be 1/4 or 1/3 or other arbitrary reasonable values.
As shown in connection with fig. 3, an embodiment of the present disclosure provides another method for defrosting an evaporator, comprising:
s301, under the condition that a defrosting mode is entered, the processor determines a target preheating duration according to the entering temperature of the defrosting mode.
S302, the processor controls the heating device to start, and operates the target preheating duration according to the rated power.
S303, the processor controls the temperature sensor to continuously detect the temperature of the evaporator coil, and obtains the temperature change rate of the temperature of the evaporator coil.
S304, every preset period, the processor adjusts the operation power of the heating device according to the change condition of the temperature change rate in the preset period.
By adopting the method for defrosting the evaporator, which is provided by the embodiment of the disclosure, when the refrigerator enters the defrosting mode, the embodiment of the disclosure can judge the specific frosting degree on the evaporator according to the entering temperature of the defrosting mode, and can determine the target preheating duration of the defrosting mode according to the specific frosting degree. Through starting heating device to make it with rated power operation target preheating duration, the embodiment of the present disclosure can utilize heating device produced heat to melt the frost layer on the evaporimeter gradually, and can promote the defrosting efficiency of defrosting initial stage, be favorable to shortening defrosting duration, ensure refrigerator refrigeration effect. After the heating device is started to operate for a period of time, the embodiment of the disclosure controls the temperature sensor to start working, continuously detects the temperature of the evaporator coil, and then obtains the temperature change rate of the temperature of the evaporator coil according to the temperature change rate. With the continuous heating of the heating device, the frost layer becomes thinner gradually, and the thermal resistance to the temperature sensor is reduced accordingly, so that the corresponding heat conduction rate is increased gradually. Therefore, the embodiment of the disclosure can grasp the current integral defrosting process by periodically analyzing the change condition of the temperature change rate, and can adaptively adjust the running power of the heating device so as to match the heat requirement corresponding to the defrosting process. According to the embodiment of the disclosure, on one hand, defrosting time can be shortened, the refrigerating effect of the refrigerator is guaranteed, on the other hand, room temperature rise can be reduced, and the power consumption of the refrigerator is saved.
Optionally, the processor obtains the entry temperature of the defrost mode by: the processor controls the temperature sensor to detect the temperature of the evaporator coil before entering the defrosting mode to obtain the entering temperature of the defrosting mode. In this way, by detecting the temperature of the evaporator coil before entering the defrosting mode, the embodiments of the present disclosure can determine the specific frosting degree on the evaporator accordingly, thereby being beneficial to setting a suitable target preheating duration.
Optionally, the target warm-up period is inversely related to the entering temperature of the defrosting mode. Thus, the lower the entering temperature of the defrosting mode, the more serious the degree of frosting on the evaporator. Therefore, the embodiment of the disclosure can set a relatively larger target preheating time length so as to realize sufficient preheating through higher rated power, thereby being beneficial to rapid rising of the frost temperature.
Optionally, the processor determines the target preheating duration according to the entering temperature of the defrosting mode, including: in the case that the entering temperature of the defrosting mode is smaller than or equal to the first preset temperature, the processor determines that the target preheating duration is T 1 The method comprises the steps of carrying out a first treatment on the surface of the Or, in case that the entering temperature of the defrosting mode is greater than the first preset temperature and less than or equal to the second preset temperature, the processorDetermining the target preheating duration to be T 2 The method comprises the steps of carrying out a first treatment on the surface of the Or, in the case that the entering temperature of the defrosting mode is greater than the second preset temperature, the processor determines that the target preheating duration is T 3 . Wherein the first preset temperature is less than the second preset temperature, T 1 ＞T 2 ＞T 3 . Thus, when the entering temperature of the defrosting mode is less than or equal to the first preset temperature, the degree of frosting on the evaporator is extremely serious, so that a relatively larger target preheating period T needs to be set 1 So as to realize sufficient preheating and be beneficial to the rapid rise of the frost temperature. When the entering temperature of the defrosting mode is larger than the first preset temperature and smaller than or equal to the second preset temperature, the frosting degree on the evaporator is general, so that only a relatively proper target preheating duration T is required to be set 2 A sufficient preheating can be achieved to allow the frost temperature to rise rapidly in a short time. When the entering temperature of the defrosting mode is larger than the second preset temperature, the frosting degree on the evaporator is light, and the target preheating duration T is set relatively smaller in the embodiment of the disclosure 3 The heating device is prevented from running at rated power after the frost layer begins to melt, so that the running power of the subsequent heating device is matched with the heat requirement corresponding to the defrosting process, and the heat waste is reduced.
Optionally, the target preheating duration is within the range of [1min,3min ]]. Preferably T 1 ＝3min，T 2 ＝2min，T 3 ＝1min。T 1 、T 2 、T 3 The method can also be adjusted according to the actual demands of users, and can also be set as any other reasonable value in the value range.
As shown in connection with fig. 4, an embodiment of the present disclosure provides another method for defrosting an evaporator, comprising:
s401, under the condition that a defrosting mode is entered, the processor controls the heating device to start operation.
S402, the processor controls the temperature sensor to continuously detect the temperature of the evaporator coil, and obtains the temperature change rate of the temperature of the evaporator coil.
S403, every preset period, the processor adjusts the operation power of the heating device according to the change condition of the temperature change rate in the preset period.
S404, controlling the heating device to stop running by the processor under the condition that the temperature of the evaporator coil is greater than or equal to the exit temperature of the defrosting mode.
By adopting the method for defrosting the evaporator, which is provided by the embodiment of the invention, when the refrigerator enters the defrosting mode, the heating device is controlled to start to operate, so that the frost layer on the evaporator can be gradually melted by utilizing the heat generated by the heating device. After the heating device is started to operate for a period of time, the embodiment of the disclosure controls the temperature sensor to start working, continuously detects the temperature of the evaporator coil, and then obtains the temperature change rate of the temperature of the evaporator coil according to the temperature change rate. With the continuous heating of the heating device, the frost layer becomes thinner gradually, and the thermal resistance to the temperature sensor is reduced accordingly, so that the corresponding heat conduction rate is increased gradually. Therefore, the embodiment of the disclosure can grasp the current integral defrosting process by periodically analyzing the change condition of the temperature change rate, and can adaptively adjust the running power of the heating device so as to match the heat requirement corresponding to the defrosting process. According to the embodiment of the disclosure, on one hand, defrosting time can be shortened, the refrigerating effect of the refrigerator is guaranteed, on the other hand, room temperature rise can be reduced, and the power consumption of the refrigerator is saved. In addition, when the evaporator coil temperature is greater than or equal to the exit temperature of the defrost mode, it is indicated that the frost layer on the evaporator has completely melted at this time. Therefore, the embodiment of the disclosure controls the heating device to stop running, so that heat waste can be reduced, and power consumption of the refrigerator can be saved. Meanwhile, the fluctuation of the room temperature caused by continuous heating can be avoided, and the adverse effect on the refrigerating effect of the food materials can be eliminated.
Alternatively, the exit temperature of the defrosting mode may be set according to the storage temperature of the compartment. Preferably, the exit temperature of the defrosting mode can be set to 7 ℃ to avoid fluctuation of the room temperature caused by continuous heating. The exit temperature of the defrosting mode can be adjusted according to the actual demands of users, and can be set to be 5 ℃ or 10 ℃ or any other reasonable value.
As shown in connection with fig. 5, an embodiment of the present disclosure provides an apparatus 500 for evaporator defrosting, including a processor (processor) 501 and a memory (memory) 502. Optionally, the apparatus 500 may further comprise a communication interface (Communication Interface) 503 and a bus 504. The processor 501, the communication interface 503, and the memory 502 may communicate with each other via the bus 504. The communication interface 503 may be used for information transfer. The processor 501 may invoke logic instructions in the memory 502 to perform the method for evaporator defrosting of the above-described embodiments.
Further, the logic instructions in the memory 502 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 502 is a computer readable storage medium, and may be used to store a software program, a computer executable program, and program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 501 executes functional applications and data processing by running program instructions/modules stored in the memory 502, i.e. implements the method for evaporator defrosting in the above-described embodiments.
Memory 502 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functionality; the storage data area may store data created according to the use of the terminal device, etc. In addition, memory 502 may include high-speed random access memory, and may also include non-volatile memory.
As shown in connection with fig. 6, an embodiment of the present disclosure provides a refrigerator including: the refrigerator body 600, and the above-described device 500 for defrosting an evaporator. The refrigerator body 600 includes an evaporator. And the heating device is arranged on the surface of the evaporator. And the temperature sensor is arranged on the surface of the evaporator. The device 500 for defrosting an evaporator is installed at the refrigerator body 600 and is electrically connected to the heating device and the temperature sensor, respectively. The mounting relationship described herein is not limited to being placed inside the refrigerator body 600, but also includes mounting connections with other components of the refrigerator, including but not limited to physical connections, electrical connections, or signal transmission connections, etc.
Those skilled in the art will appreciate that the apparatus 500 for defrosting an evaporator may be adapted to a viable product body, such as an air conditioner, to achieve other viable embodiments.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for defrosting an evaporator.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. While the aforementioned storage medium may be a non-transitory storage medium, such as: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, or the like, which can store program codes.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A method for defrosting an evaporator, characterized in that the surface of the evaporator is provided with a heating device and a temperature sensor; the method comprises the following steps:
under the condition of entering a defrosting mode, controlling the heating device to start running;
controlling a temperature sensor to continuously detect the temperature of the evaporator coil and acquiring the temperature change rate of the temperature of the evaporator coil;
and adjusting the operation power of the heating device according to the change condition of the temperature change rate in the preset period every interval of the preset period.
2. The method of claim 1, wherein adjusting the operating power of the heating device based on the rate of change of the temperature change over the predetermined period comprises:
under the condition that the temperature change rate increases in a preset period, the operation power of the heating device is adjusted according to a first heating rule; or,
and under the condition that the temperature change rate is not increased in a preset period, adjusting the operation power of the heating device according to a second heating rule.
3. The method of claim 2, wherein adjusting the operating power of the heating device according to the first heating schedule comprises:
calculation of P 1 ＝[1-(t n -t 1 )/(t 2 -t 1 )]*P 0 Obtaining a first target power of the heating device;
controlling the heating device to operate according to the first target power;
wherein P is 1 For a first target power of the heating means, P 0 T is the rated power of the heating device 1 For the first detected evaporator coil temperature by the temperature sensor, t n For the last detected evaporator coil temperature by the temperature sensor, t 2 Is the exit temperature for the defrost mode.
4. The method of claim 2, wherein adjusting the operating power of the heating device according to the second heating schedule comprises:
determining a second target power of the heating device according to the magnitude relation between the temperature of the evaporator coil detected by the temperature sensor last time and the preset coil temperature;
the heating device is controlled to operate at a second target power.
5. The method of claim 4, wherein determining the second target power of the heating device based on the magnitude relationship of the last detected evaporator coil temperature by the temperature sensor and the preset coil temperature comprises:
determining that the second target power of the heating device is P in the case that the last detected evaporator coil temperature of the temperature sensor is less than the preset coil temperature 21 The method comprises the steps of carrying out a first treatment on the surface of the Or,
determining that the second target power of the heating device is P in the case that the temperature of the evaporator coil detected by the temperature sensor last time is greater than or equal to the preset coil temperature 22 ；
Wherein P is 21 ＞P 22 。
6. Method according to any one of claims 1 to 5, characterized in that in case of entering a defrosting mode, controlling the heating means to start operation comprises:
under the condition of entering a defrosting mode, determining a target preheating duration according to the entering temperature of the defrosting mode;
controlling the heating device to start, and operating the target preheating time according to the rated power;
wherein, the target preheating duration is inversely related to the entering temperature of the defrosting mode.
7. The method according to any one of claims 1 to 5, further comprising:
and controlling the heating device to stop running under the condition that the temperature of the evaporator coil is greater than or equal to the exit temperature of the defrosting mode.
8. An apparatus for evaporator defrosting comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for evaporator defrosting of any one of claims 1 to 7 when the program instructions are run.
9. A refrigerator, comprising:
a refrigerator body including an evaporator;
the heating device is arranged on the surface of the evaporator;
the temperature sensor is arranged on the surface of the evaporator;
the apparatus for defrosting an evaporator of claim 8, which is mounted to the refrigerator body, is electrically connected to the heating device and the temperature sensor, respectively.
10. A computer readable storage medium storing program instructions which, when run, are adapted to cause a computer to perform the method for defrosting an evaporator according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311576660.XA CN117704722A (en) | 2023-11-23 | 2023-11-23 | Method and device for defrosting evaporator, refrigerator and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311576660.XA CN117704722A (en) | 2023-11-23 | 2023-11-23 | Method and device for defrosting evaporator, refrigerator and computer readable storage medium |
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| Publication Number | Publication Date |
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| CN117704722A true CN117704722A (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311576660.XA Pending CN117704722A (en) | 2023-11-23 | 2023-11-23 | Method and device for defrosting evaporator, refrigerator and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117704722A (en) |
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2023
- 2023-11-23 CN CN202311576660.XA patent/CN117704722A/en active Pending
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