CN112484354A - Defrosting control method and device for air cooler, controller and air cooler - Google Patents
Defrosting control method and device for air cooler, controller and air cooler Download PDFInfo
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- CN112484354A CN112484354A CN202011205067.0A CN202011205067A CN112484354A CN 112484354 A CN112484354 A CN 112484354A CN 202011205067 A CN202011205067 A CN 202011205067A CN 112484354 A CN112484354 A CN 112484354A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2103—Temperatures near a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
Abstract
The application relates to a defrosting control method and device for an air cooler, a controller and the air cooler. The air cooler comprises a control mainboard, the method is applied to a controller arranged on the control mainboard, and the method comprises the following steps: acquiring the set current relative humidity in the current target warehouse and the current warehouse; determining target refrigerating operation time corresponding to the current target warehouse temperature and the current relative humidity based on the corresponding relation between the preset target warehouse temperature and the preset relative humidity and the refrigerating operation time; and when the accumulated refrigerating operation time of the refrigeration house reaches the target refrigerating operation time, controlling the refrigeration house to enter a defrosting mode. According to the arrangement, the target temperature and the relative humidity in the refrigerator are independently detected by the air cooler (the internal unit), and the corresponding refrigerating operation time and the time for entering the defrosting mode are determined, so that the problems of incomplete defrosting of the air cooler or overlong defrosting time caused by unreasonable defrosting period of the external unit and no matching of the air cooler in the traditional method for controlling the defrosting mode by the external unit can be solved.
Description
Technical Field
The application relates to the technical field of refrigeration, in particular to a defrosting control method and device for an air cooler, a controller and the air cooler.
Background
In the current cold chain market, a plurality of users purchase a condensing unit and an air cooler respectively in different companies in order to save equipment cost, so that the inner unit (air cooler) and the outer unit (condensing unit) are not matched, and more problems are generated. One of the more serious problems is the problem of defrosting control, defrosting is carried out on an internal unit, but a defrosting mode is controlled by an external unit mainboard, so that the external unit cannot be matched with defrosting time and defrosting interval control of internal units of other companies, and the problems that the air cooler is not completely defrosted and frost is condensed too thickly due to repeated operation are caused; or the defrosting time is too long, so that the storage temperature fluctuation is large, and the goods are not favorably stored. Both these two kinds of circumstances can reduce the life of air-cooler, cause the loss for the user.
Disclosure of Invention
The application provides a defrosting control method, device, controller and air-cooler of air-cooler to solve because of not joining in marriage the air-cooler defrosting that interior, outer machine defrosting cycle is unreasonable to cause and is incomplete, the repeated operation leads to the problem that the frost condenses the excessive thickness, or the time overlength of defrosting, leads to the storage temperature fluctuation great, is unfavorable for the problem of the storage of goods.
The above object of the present application is achieved by the following technical solutions:
in a first aspect, the present application provides a defrosting control method for an air cooler, where the air cooler includes a control motherboard, the method is applied to a controller disposed on the control motherboard, and the method includes:
acquiring the set current relative humidity in the current target warehouse and the current warehouse;
determining target refrigerating operation time corresponding to the current target warehouse temperature and the current relative humidity based on a preset corresponding relation between the target warehouse temperature and the relative humidity and the refrigerating operation time;
and when the accumulated refrigerating operation time of the refrigeration house reaches the target refrigerating operation time, controlling the refrigeration house to enter a defrosting mode.
Optionally, the preset corresponding relationship between the target warehouse temperature and the relative humidity and the refrigeration operation time includes a plurality of target warehouse temperature intervals, a plurality of relative humidity intervals, and the refrigeration operation time corresponding to each of the target warehouse temperature intervals and each of the relative humidity intervals; in the same target storage temperature range, the smaller the relative humidity is, the longer the corresponding refrigerating operation time is; in the same relative humidity interval, the higher the target storage temperature is, the longer the corresponding refrigerating operation time is;
the determining the target refrigerating operation time corresponding to the current target temperature and the current relative humidity comprises:
and determining the corresponding refrigerating operation time as the target refrigerating operation time based on the target temperature interval in which the current target temperature is located and the relative humidity interval in which the current relative humidity is located.
Optionally, a communication interface is further arranged on the control main board and used for communicating with the condensing unit;
the control freezer enters into the mode of defrosting, includes:
and sending a shutdown instruction to the condensing unit to stop a compressor of the condensing unit.
Optionally, after controlling the freezer to enter the defrosting mode, the method further includes:
acquiring the current temperature of a heat exchange tube of an air cooler;
determining a target defrosting exit temperature corresponding to the current target reservoir temperature based on a preset corresponding relation between the target reservoir temperature and the defrosting exit temperature;
and when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature, controlling the refrigeration house to exit the defrosting mode.
Optionally, the method further includes:
determining the target shortest defrosting time corresponding to the current target reservoir temperature based on the corresponding relation between the preset target reservoir temperature and the shortest defrosting time;
when the current temperature of heat exchange tube is greater than or equal to when the target defrosting withdraws from the temperature, control freezer and withdraw from the mode of defrosting, include:
and when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature and the accumulated running time of the air cooler after entering the defrosting mode is greater than or equal to the target shortest defrosting time, controlling the refrigeration house to exit the defrosting mode.
Optionally, the controlling the refrigerator to exit the defrosting mode includes:
and sending a starting instruction to the condensing unit so as to start a compressor of the condensing unit.
Optionally, the freezer is provided with the electric heater who is used for carrying out the function of changing frost, be provided with the temperature limiter on the electric heater, the temperature limiter is used for detecting when electric heater's temperature reaches predetermined disconnection temperature, makes the freezer withdraw from the mode of changing frost.
Optionally, the method further includes:
acquiring the current temperature in a warehouse;
if the current temperature in the refrigerator in the refrigeration mode is smaller than the minimum value of the preset temperature interval, controlling the refrigerator to stop running;
and if the current temperature in the refrigerator reaches the maximum value of the preset temperature interval after the refrigerator stops running, controlling the refrigerator to enter a refrigeration mode.
In a second aspect, the present application further provides a defrosting control device of air-cooler, the air-cooler is including the control mainboard, the device be applied to set up in controller on the control mainboard, the device includes:
the first acquisition module is used for acquiring the set current relative humidity in the current target warehouse and the current warehouse;
the first determination module is used for determining the target refrigerating operation time corresponding to the current target warehouse temperature and the current relative humidity based on the corresponding relation between the preset target warehouse temperature and the relative humidity and the refrigerating operation time;
and the first control module is used for controlling the refrigeration house to enter a defrosting mode when the accumulated refrigeration running time of the refrigeration house reaches the target refrigeration running time.
Optionally, the apparatus further comprises:
the second acquisition module is used for acquiring the current temperature of the heat exchange tube of the air cooler;
the second determination module is used for determining a target defrosting exit temperature corresponding to the current target reservoir temperature based on the corresponding relation between the preset target reservoir temperature and the defrosting exit temperature;
and the second control module is used for controlling the refrigeration house to exit the defrosting mode when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature.
Optionally, the apparatus further comprises:
the third acquisition module is used for acquiring the current temperature in the warehouse;
the third control module is used for controlling the refrigerator to stop running if the current temperature in the refrigerator in the refrigeration mode is smaller than the minimum value of the preset temperature interval; and the refrigerator control module is also used for controlling the refrigerator to enter a refrigeration mode if the current temperature in the refrigerator reaches the maximum value of the preset temperature interval after the refrigerator stops running.
In a third aspect, the present application further provides a controller of an air cooler, comprising:
a memory and a processor coupled to the memory;
the memory is used for storing a program, and the program is at least used for executing the defrosting control method of the air cooler in any one of the first aspect;
the processor is used for calling and executing the program stored in the memory.
In a fourth aspect, the present application further provides an air cooler, which includes an air cooler body and a control mainboard arranged on the air cooler body, the control mainboard is provided with the controller according to the third aspect.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the technical scheme, the control main board and the controller are arranged on the air cooler (the internal machine), the controller acquires the set current target temperature and the set current relative humidity in the refrigerator, then the target refrigerating operation time corresponding to the current target temperature and the current relative humidity is determined based on the corresponding relation between the preset target temperature and the preset relative humidity and the refrigerating operation time, and the refrigerator is controlled to enter the defrosting mode when the accumulated refrigerating operation time of the refrigerator reaches the target refrigerating operation time. Due to the arrangement, the target temperature and the relative humidity in the refrigerator are independently detected and set by the air cooler (the internal unit), and the corresponding refrigerating operation time and the time for entering the defrosting mode are determined, so that the problems of incomplete defrosting of the air cooler or overlong defrosting time caused by unreasonable defrosting period of the external unit and no matching of the air cooler in the traditional method for controlling the defrosting mode by the external unit can be solved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic flow chart illustrating a defrosting mode in a defrosting control method for an air cooler according to an embodiment of the present application;
fig. 2 is a schematic flowchart illustrating a flow exiting a defrosting mode in a defrosting control method of an air cooler according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a defrosting control device of an air cooler according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a controller of an air cooler according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a refrigeration storage unit according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Refrigeration equipment such as a refrigerator is mainly composed of a condensing unit (as an external machine) and an air cooler (as an internal machine). The outdoor unit comprises a plurality of components, such as a compressor, an electromagnetic coil and a fan, which need to be powered and operated, so that the outdoor unit is provided with a control mainboard (used for powering and controlling the components) for convenience of power supply and wiring; and the inner machine only needs the fan and the electric heater (be used for defrosting) to supply power, and according to the difference of the mode of defrosting, some air-coolers still do not include electric heater, so the inner machine does not set up the control mainboard usually, but will be controlled the equipment and pass through line connection to outer machine mainboard, by outer machine mainboard unified power supply and control (including defrosting control).
In addition, in practical application, in order to save equipment cost, a plurality of users can purchase a condensing unit and an air cooler respectively in different companies, so that the internal unit (air cooler) and the external unit (condensing unit) are not matched, and more problems are caused. One of the more serious problems is the problem of controlling defrosting: defrosting is carried out on an inner machine, various detection sensors such as temperature sensors and the like which are arranged for determining whether defrosting is needed are also arranged in the inner machine, but the final defrosting mode (including defrosting time, defrosting interval and the like) is controlled by an outer machine mainboard, and because working parameters of the inner machine generated by different companies are likely to be different, the outer machine is likely not to be matched with the defrosting time and defrosting interval control of the inner machines of other companies, so that the problems that defrosting of an air cooler is incomplete, and frost is condensed too thick due to repeated operation are caused; or the defrosting time is too long, so that the storage temperature fluctuation is large, and the goods are not favorably stored. Both these two kinds of circumstances can reduce the life of air-cooler, cause the loss for the user.
In order to solve the problems, the application provides an air cooler with a control main board and a corresponding defrosting control method, so that the defrosting process of the air cooler is controlled more reasonably. The following examples are provided to illustrate specific embodiments that may be employed.
Examples
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a flow entering a defrosting mode in a defrosting control method of an air cooler according to an embodiment of the present application. The air cooler comprises a control mainboard, and the method is applied to a controller arranged on the control mainboard, namely, the method can be realized by a controller based on hardware/software or a combination thereof.
As shown in fig. 1, the method comprises at least the following steps:
s101: acquiring the set current relative humidity in the current target warehouse and the current warehouse;
the set current target library temperature is the temperature which is set by a user and is finally required to be reached in the library, and can be directly obtained from a related storage module; the current relative humidity in the warehouse can be detected in real time by a humidity sensor arranged in the warehouse. The current target library temperature and the current relative humidity may be acquired periodically, or may be acquired again under a specific condition, which is not limited.
S102: determining a target refrigerating operation time t corresponding to the current target warehouse temperature and the current relative humidity based on a preset corresponding relation between the target warehouse temperature and the relative humidity and the refrigerating operation time;
specifically, before the method of the present application is applied, the most reasonable refrigeration operation time under different target warehouse temperatures and different relative humidities in the warehouse needs to be obtained through a large number of experiments, so that the corresponding relation between the two parameters of the target warehouse temperature and the relative humidity and the refrigeration operation time is obtained. The most reasonable refrigerating operation time can be obtained by performing experiments under the condition of considering one or more factors such as power consumption, frost thickness and the like. The cooling operation time is a time during which the refrigerator is continuously operated in the cooling mode, and once the actual cooling operation time reaches the time, the operation mode needs to be switched to the defrosting mode for defrosting.
For example, in some embodiments, the preset correspondence relationship between the target reservoir temperature and the relative humidity and the refrigeration operation time includes a plurality of target reservoir temperature intervals and a plurality of relative humidity intervals, and the refrigeration operation time corresponding to each of the target reservoir temperature intervals and the relative humidity intervals, and in the same target reservoir temperature interval, the smaller the relative humidity is, the less frosting is likely to occur, and the longer the corresponding refrigeration operation time is; in the same relative humidity interval, the higher the target storage temperature is, the less frosting is likely to occur, and the longer the corresponding refrigerating operation time is. Even when the target storage temperature is high enough or when the relative humidity is low enough, the unit does not reach the frosting condition, the unit does not frost, and therefore the cooling mode can be continuously operated without switching the defrosting mode (which can be understood as infinite cooling operation time).
Further, in step S102, determining the target cooling operation time corresponding to the current target storage temperature and the current relative humidity includes: and determining the corresponding refrigerating operation time as the target refrigerating operation time based on the target temperature interval in which the current target temperature is located and the relative humidity interval in which the current relative humidity is located.
Of course, it should be understood that the above-mentioned method of representing the correspondence between the target storage temperature and the relative humidity and the cooling operation time in the form of intervals is only exemplary, and in practical applications, other manners may be adopted, and no limitation is made thereto.
S103: and when the accumulated refrigerating operation time of the refrigeration house reaches the target refrigerating operation time, controlling the refrigeration house to enter a defrosting mode.
The accumulated refrigerating operation time of the refrigeration house refers to the time of the continuous operation refrigerating mode of the refrigeration house, namely, once the refrigeration house leaves the refrigerating mode, the accumulated refrigerating operation time is cleared, for example, the accumulated time is started after the power-on starting machine enters the refrigerating mode, and the steps S101 and S102 are started to be executed, and when the accumulated refrigerating operation time reaches the target refrigerating operation time determined in the step S102, the refrigeration house unit is switched to the defrosting mode; for another example, the time accumulation is started after the freezer unit is switched from the defrosting mode to the cooling mode, and when the accumulated cooling operation time reaches the previously determined target cooling operation time (or the frost operation mode is switched to the cooling mode and then the steps S101 and S102 are restarted, the target cooling operation time is re-determined, and when the accumulated cooling operation time reaches the re-determined target cooling operation time), the freezer unit is switched to the defrosting mode again.
In addition, in some embodiments, a communication interface is further arranged on the control main board of the air cooler and used for communicating with the condensing unit; correspondingly, a communication interface is also arranged on the control mainboard of the condensing unit for communication;
furthermore, in step S103, controlling the refrigerator to enter a defrosting mode specifically includes: and sending a stop instruction to the condensing unit to stop a compressor of the condensing unit, and stopping the unit for refrigeration after the compressor is stopped so as to accelerate a defrosting process.
According to the technical scheme, the control main board and the controller are arranged on the air cooler (the internal machine), the controller acquires the set current target temperature and the set current relative humidity in the refrigerator, then the target refrigerating operation time corresponding to the current target temperature and the current relative humidity is determined based on the corresponding relation between the preset target temperature and the preset relative humidity and the refrigerating operation time, and the refrigerator is controlled to enter the defrosting mode when the accumulated refrigerating operation time of the refrigerator reaches the target refrigerating operation time. Due to the arrangement, the target temperature and the relative humidity in the refrigerator are independently detected and set by the air cooler (the internal unit), and the corresponding refrigerating operation time and the time for entering the defrosting mode are determined, so that the problems of incomplete defrosting of the air cooler or overlong defrosting time caused by unreasonable defrosting period of the external unit and no matching of the air cooler in the traditional method for controlling the defrosting mode by the external unit can be solved.
In addition, the main board of the external unit is not changed too much, and the functions of detecting the high voltage and the low voltage of the unit, judging faults and the like are still kept.
On the basis that the above embodiment is an explanation of a control method for an air cooler to enter a defrosting mode, the embodiment of the present application further provides a control method for an air cooler to exit a defrosting mode.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating that a defrosting mode exits in a defrosting control method of an air cooler according to an embodiment of the present application. Then, the method flow is executed after the step S103 (controlling the refrigerator to enter the defrosting mode). As shown in fig. 2, the method at least includes the following steps:
s201: acquiring the current temperature of a heat exchange tube of an air cooler; the current temperature of the heat exchange tube can be obtained through the detection of a temperature sensing bulb arranged on the heat exchange tube of the air cooler;
s202: determining a target defrosting exit temperature corresponding to the current target reservoir temperature based on a preset corresponding relation between the target reservoir temperature and the defrosting exit temperature;
specifically, similar to step S102, before applying the method described in this embodiment, the most reasonable defrosting exit temperature under different target warehouse temperatures needs to be obtained through experiments in advance, so as to ensure that defrosting is complete and the refrigeration mode is resumed as soon as possible, so as to refrigerate the stored goods as soon as possible.
In some embodiments, different defrosting exit temperatures corresponding to different target reservoir temperature intervals may also be obtained through experiments based on the plurality of target reservoir temperature intervals divided in the specific implementation method of step S102. Specifically, because different target storehouse temperature is under, the heat exchange tube temperature rise of air-cooler is different during the defrosting, consequently, comes the different defrosting of adaptation and withdraws from the temperature through setting up different target storehouse temperature interval, can accomplish accurate defrosting, avoids causing the misjudgment that the defrosting is incomplete or the defrosting time overlength because of the difference of heat exchange tube temperature rise, and wherein, the higher the target storehouse temperature is, the more low is the corresponding defrosting withdraws from the temperature.
And then, by judging the target reservoir temperature interval in which the current target reservoir temperature is located, the corresponding defrosting exit temperature can be quickly determined as the target defrosting exit temperature.
S203: and when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature, controlling the refrigeration house to exit the defrosting mode.
Specifically, when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature, the defrosting is finished, so that the heat exchange tube exits the defrosting mode and enters the cooling mode again.
In addition, in order to prevent the situation that the defrosting exits earlier due to the fact that the user places the defrosting bulb at the wrong position or fails, when it is determined whether to exit the defrosting mode, the target shortest defrosting time corresponding to the current target reservoir temperature may be determined based on the corresponding relationship between the preset target reservoir temperature and the shortest defrosting time, and accordingly, the step S103 includes: and when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature and the accumulated running time of the air cooler after entering the defrosting mode is greater than or equal to the target shortest defrosting time, controlling the refrigeration house to exit the defrosting mode.
The preset corresponding relation between the target reservoir temperature and the shortest defrosting time can also be different shortest defrosting times corresponding to different target reservoir temperature zones obtained through experiments in advance, and further, the corresponding shortest defrosting time can be quickly determined as the target shortest defrosting time by judging the target reservoir temperature zone where the current target reservoir temperature is located.
Therefore, whether the defrosting mode exits or not is judged jointly through two conditions of temperature (the current temperature of the heat exchange tube and the target defrosting exit temperature) and time (the accumulated running time of the defrosting mode and the target shortest defrosting time), the situation that the defrosting exits earlier due to the fact that a user places the defrosting temperature sensing bulb in a wrong position or breaks down can be effectively prevented, the defrosting is guaranteed to be complete, and the defrosting mode exits as soon as possible after the defrosting is complete.
In addition, in some embodiments, if the step of "sending a stop instruction to the condensing unit to stop the compressor of the condensing unit" is executed when entering the defrosting mode, the specific process of controlling the refrigerator to exit the defrosting mode in step S203 includes: and sending a starting instruction to the condensing unit to start a compressor of the condensing unit, and recovering the unit to a refrigeration mode after the compressor is started.
In some embodiments, the refrigerator is provided with an electric heater for performing a defrosting function, the electric heater is provided with a temperature limiter, and the temperature limiter is used for enabling the refrigerator to exit from a defrosting mode when the temperature of the electric heater is detected to reach a preset disconnection temperature. That is, the mode of changing the frost is based on electric heater's heating and is changed the frost to add the temperature limiter in electric heater, when changing the frost completely, electric heater is in when the dry combustion method state, and accessible temperature limiter protective value breaks off, withdraws from changing the frost, thereby effectually avoids leading to the damage of electric heater dry combustion method to the internal unit and storehouse temperature fluctuation range big influence goods quality scheduling problem because of changing the frost overlength, also reduces the loss of electric quantity. And when the temperature detected by the temperature limiter is reduced to a recovery value, the connection is reconnected, so that the protection action can be continuously executed in the subsequent application.
In order to make the above aspects of the present application easier to understand, the following is exemplified by a specific example.
The corresponding scheme comprises the following steps:
1) entering the defrosting control logic
And when the defrosting condition is entered, the set refrigerating running time T is jointly adapted to the set refrigerating running time T by the set current target temperature T and the detected relative humidity RH in the refrigerator, and when the accumulated refrigerating running time reaches T, the set is entered into defrosting. The actual value of the refrigerating operation time T is determined by a refrigerating operation time T adaptation table in the following table 1 according to the current target storage temperature T and the relative humidity RH, each value (T11, T12, T13 … …) of the refrigerating operation time T is determined in advance through experiments, and when the current target storage temperature T is not less than a first set value T1, the air cooler does not frost, so that the relative humidity condition can not be judged, and the unit does not enter defrosting; when the current target warehouse temperature T2 is not less than T and is less than T1, judging the relative humidity condition, when the relative humidity is below a certain interval, the air cooler does not frost, the unit does not need to be defrosted, and when the relative humidity is above the certain interval, the refrigerating operation time T of the unit is adapted; in this way, the unit operation time is adapted according to the section where the warehouse temperature is located and the section where the relative humidity is located, when the refrigeration operation meets the accumulated operation time, the internal machine mainboard sends a shutdown instruction to the external machine mainboard, the compressor stops operating, and the unit enters a defrosting mode;
TABLE 1 refrigerating operation time t adaptation table
2) And exiting the defrosting control logic.
And (3) adapting the defrosting shortest running time T 'and the defrosting exiting temperature T' to the set current target reservoir temperature T under the defrosting exiting condition, and exiting the defrosting of the unit when the defrosting exiting temperature T 'and the shortest defrosting time T' are met. The adaptation time is determined according to the defrosting exit temperature T 'and the shortest defrosting time T' adaptation table in the table 2, and the adaptation time is determined by experiments. Firstly, the shortest defrosting time t' is adapted, and the influence of early quitting of defrosting caused by the fact that a user places the defrosting bulb at a wrong position or breaks down is prevented; secondly, aiming at different target reservoir temperatures, the temperature rise changes of the heat exchange tubes of the air cooler are different during defrosting, different defrosting exit temperatures are adapted by setting different target reservoir temperature intervals, accurate defrosting can be achieved, and misjudgment that defrosting is not clean or defrosting time is too long due to different temperature rises of the heat exchange tubes is avoided; in addition, the temperature limiter is added in the electric heater, when defrosting is clean, and the electric heater is in a dry burning state, the protection value of the temperature limiter is disconnected, defrosting is quitted, the problems that the damage of the electric heater to an internal machine due to dry burning and the quality of goods are greatly influenced by the fluctuation range of the warehouse temperature due to overlong defrosting are effectively solved, the loss of electric quantity is reduced, and the temperature limiter can be reconnected when the temperature is reduced to a recovery value. When the defrosting exit condition is reached, the internal machine mainboard sends a starting instruction to enter a refrigeration mode.
TABLE 2 Adaptation table of defrosting exit temperature T' and shortest defrosting time T ″
In table 1 and table 2, T1 and T2 … … are present, but specific numerical values (for example, T1 in table 1 and T1 in table 2) in both tables may be the same or different, and are specified by experiments.
Furthermore, in some embodiments, the method may further include:
acquiring the current temperature in a warehouse; if the current temperature in the refrigerator in the refrigeration mode is smaller than the minimum value of the preset temperature interval, controlling the refrigerator to stop running; and if the current temperature in the refrigerator reaches the maximum value of the preset temperature interval after the refrigerator stops running, controlling the refrigerator to enter a refrigeration mode.
Specifically, can detect the current temperature in the storehouse through storehouse temperature sensing element, if the current temperature is less than the minimum of predetermineeing the temperature interval, show that the freezer refrigerates excessively, continuous operation can lead to the energy extravagant under this operating mode, consequently, the control mainboard can send the shut down instruction, the interior machine of control freezer is shut down, and after the freezer stops operating, the temperature can rise in the storehouse, current temperature after the intensification reaches the maximum of predetermineeing the temperature interval, show that the goods of storage need refrigerate, consequently, the control mainboard can send the start instruction, control freezer gets into the refrigeration mode. So set up, can reduce the energy consumption to a certain extent under the prerequisite of guaranteeing to satisfy normal refrigeration effect.
And furthermore, because the inner unit is provided with the control mainboard, the wiring of the temperature sensing element in the refrigerator is convenient (namely, because the temperature sensing element is closer to the inner unit control mainboard and is connected to the inner unit control mainboard), therefore, a plurality of temperature sensing elements can be arranged at different positions in the refrigerator for judging the temperature of the refrigerator, so that the refrigerator is more convenient than the refrigerator which is put by pulling one temperature sensing element in the outer unit in the market, the accuracy of temperature detection can be improved, and the fluctuation of the temperature of the refrigerator is reduced.
In addition, corresponding to the defrosting control method of the air cooler, the embodiment of the application further provides a defrosting control device of the air cooler.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a defrosting control device of an air-cooler shown in an embodiment of the present application, where the air-cooler includes a control motherboard, and the device is applied to a controller disposed on the control motherboard. As shown in fig. 3, the apparatus includes at least the following structure:
a first obtaining module 31, configured to obtain a set current target library temperature and a current relative humidity in the library;
a first determining module 32, configured to determine, based on a preset correspondence between a target storage temperature and a relative humidity and a refrigeration operation time, a target refrigeration operation time corresponding to the current target storage temperature and the current relative humidity;
and the first control module 33 is used for controlling the refrigeration storage to enter a defrosting mode when the accumulated refrigeration operation time of the refrigeration storage reaches the target refrigeration operation time.
Optionally, the preset corresponding relationship between the target warehouse temperature and the relative humidity and the refrigeration operation time includes a plurality of target warehouse temperature intervals, a plurality of relative humidity intervals, and the refrigeration operation time corresponding to each of the target warehouse temperature intervals and each of the relative humidity intervals; in the same target storage temperature range, the smaller the relative humidity is, the longer the corresponding refrigerating operation time is; in the same relative humidity interval, the higher the target storage temperature is, the longer the corresponding refrigerating operation time is;
the first determining module 32 is specifically configured to:
and determining the corresponding refrigerating operation time as the target refrigerating operation time based on the target temperature interval in which the current target temperature is located and the relative humidity interval in which the current relative humidity is located.
Optionally, a communication interface is further arranged on the control main board of the air cooler and used for communicating with the condensing unit;
when the refrigeration house is controlled to enter the defrosting mode, the first control module 31 is specifically configured to:
and sending a shutdown instruction to the condensing unit to stop a compressor of the condensing unit.
Optionally, the apparatus further comprises:
the second acquisition module is used for acquiring the current temperature of the heat exchange tube of the air cooler;
the second determination module is used for determining a target defrosting exit temperature corresponding to the current target reservoir temperature based on the corresponding relation between the preset target reservoir temperature and the defrosting exit temperature;
and the second control module is used for controlling the refrigeration house to exit the defrosting mode when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature.
Optionally, when the refrigeration storage is controlled to exit the defrosting mode, the second control module is specifically configured to:
and sending a starting instruction to the condensing unit so as to start a compressor of the condensing unit.
Optionally, the freezer is provided with the electric heater who is used for carrying out the function of changing frost, be provided with the temperature limiter on the electric heater, the temperature limiter is used for detecting when electric heater's temperature reaches predetermined disconnection temperature, makes the freezer withdraw from the mode of changing frost.
Optionally, the apparatus further comprises:
the third acquisition module is used for acquiring the current temperature in the warehouse;
the third control module is used for controlling the refrigerator to stop running if the current temperature in the refrigerator in the refrigeration mode is smaller than the minimum value of the preset temperature interval; and the control unit is used for controlling the refrigeration house to enter a refrigeration mode if the current temperature in the refrigeration house reaches the maximum value of the preset temperature interval after the refrigeration house stops running.
The specific implementation manner of the functions implemented by the functional modules may be implemented by referring to the corresponding content in the above method embodiments, and is not described in detail here.
In addition, corresponding to the defrosting control method of the air cooler, the embodiment of the application further provides a controller of the air cooler. The controller is also the controller disposed on the control main board of the air cooler in the above embodiment, and is configured to execute the steps of the defrosting control method of the air cooler in the above embodiment.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a controller of an air cooler according to an embodiment of the present application. As shown in fig. 4, the controller at least includes the following structure:
a memory 41 and a processor 42 connected to the memory 41;
the memory 41 is used for storing a program for executing at least the defrosting control method of the air cooler described in the foregoing embodiment;
the processor 42 is used to call and execute the program stored in the memory 41.
The specific implementation manner of the functions implemented by the program may be implemented by referring to the corresponding content in the above method embodiments, and is not described in detail here.
In addition, corresponding to the defrosting control method of the air cooler, the embodiment of the application further provides the air cooler. Referring to fig. 5, fig. 5 is a schematic structural diagram of a refrigeration storage unit according to an embodiment of the present application. The refrigeration house unit comprises a condensing unit and an air cooler. The air cooler comprises an air cooler body and an inner machine control mainboard arranged on the air cooler body, the controller of the air cooler (corresponding to the temperature sensor in the figure 4) is arranged on the inner machine control mainboard, and the inner machine control mainboard is further connected with a warehouse temperature sensor, a defrosting temperature sensor, a relative humidity sensor and a temperature limiter of an electric heater and used for acquiring detection data from the sensors by the controller. And the internal machine control main board is also in communication connection with an external machine control main board arranged on the condensing unit through a communication line and used for sending control instructions to each other.
According to the technical scheme, the control main board and the controller are arranged on the air cooler (the internal machine), the controller acquires the set current target temperature and the set current relative humidity in the refrigerator, then the target refrigerating operation time corresponding to the current target temperature and the current relative humidity is determined based on the corresponding relation between the preset target temperature and the preset relative humidity and the refrigerating operation time, and the refrigerator is controlled to enter the defrosting mode when the accumulated refrigerating operation time of the refrigerator reaches the target refrigerating operation time. Due to the arrangement, the target temperature and the relative humidity in the refrigerator are independently detected and set by the air cooler (the internal unit), and the corresponding refrigerating operation time and the time for entering the defrosting mode are determined, so that the problems of incomplete defrosting of the air cooler or overlong defrosting time caused by unreasonable defrosting period of the external unit and no matching of the air cooler in the traditional method for controlling the defrosting mode by the external unit can be solved.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (13)
1. A defrosting control method of an air cooler is characterized in that the air cooler comprises a control main board, the method is applied to a controller arranged on the control main board, and the method comprises the following steps:
acquiring the set current relative humidity in the current target warehouse and the current warehouse;
determining target refrigerating operation time corresponding to the current target warehouse temperature and the current relative humidity based on a preset corresponding relation between the target warehouse temperature and the relative humidity and the refrigerating operation time;
and when the accumulated refrigerating operation time of the refrigeration house reaches the target refrigerating operation time, controlling the refrigeration house to enter a defrosting mode.
2. The method according to claim 1, wherein the preset correspondence relationship between the target storage temperature and the relative humidity and the refrigerating operation time comprises a plurality of target storage temperature intervals and a plurality of relative humidity intervals, and the refrigerating operation time corresponding to each of the target storage temperature intervals and each of the relative humidity intervals; in the same target storage temperature range, the smaller the relative humidity is, the longer the corresponding refrigerating operation time is; in the same relative humidity interval, the higher the target storage temperature is, the longer the corresponding refrigerating operation time is;
the determining the target refrigerating operation time corresponding to the current target temperature and the current relative humidity comprises:
and determining the corresponding refrigerating operation time as the target refrigerating operation time based on the target temperature interval in which the current target temperature is located and the relative humidity interval in which the current relative humidity is located.
3. The method according to claim 1 or 2, characterized in that a communication interface is further arranged on the control mainboard and used for communicating with the condensing unit;
the control freezer enters into the mode of defrosting, includes:
and sending a shutdown instruction to the condensing unit to stop a compressor of the condensing unit.
4. The method according to claim 3, wherein after the controlling the refrigerator to enter the defrosting mode, further comprising:
acquiring the current temperature of a heat exchange tube of an air cooler;
determining a target defrosting exit temperature corresponding to the current target reservoir temperature based on a preset corresponding relation between the target reservoir temperature and the defrosting exit temperature;
and when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature, controlling the refrigeration house to exit the defrosting mode.
5. The method of claim 4, further comprising:
determining the target shortest defrosting time corresponding to the current target reservoir temperature based on the corresponding relation between the preset target reservoir temperature and the shortest defrosting time;
when the current temperature of heat exchange tube is greater than or equal to when the target defrosting withdraws from the temperature, control freezer and withdraw from the mode of defrosting, include:
and when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature and the accumulated running time of the air cooler after entering the defrosting mode is greater than or equal to the target shortest defrosting time, controlling the refrigeration house to exit the defrosting mode.
6. The method of claim 5, wherein the controlling the cold store to exit the defrost mode comprises:
and sending a starting instruction to the condensing unit so as to start a compressor of the condensing unit.
7. The method according to any one of claims 4 to 6, wherein the refrigeration house is provided with an electric heater for performing a defrosting function, the electric heater is provided with a temperature limiter, and the temperature limiter is used for enabling the refrigeration house to exit a defrosting mode when the temperature of the electric heater is detected to reach a preset disconnection temperature.
8. The method of claim 1, further comprising:
acquiring the current temperature in a warehouse;
if the current temperature in the refrigerator in the refrigeration mode is smaller than the minimum value of the preset temperature interval, controlling the refrigerator to stop running;
and if the current temperature in the refrigerator reaches the maximum value of the preset temperature interval after the refrigerator stops running, controlling the refrigerator to enter a refrigeration mode.
9. The utility model provides a defrosting controlling means of air-cooler, its characterized in that, the air-cooler is including the control mainboard, the device be applied to set up in controller on the control mainboard, the device includes:
the first acquisition module is used for acquiring the set current relative humidity in the current target warehouse and the current warehouse;
the first determination module is used for determining the target refrigerating operation time corresponding to the current target warehouse temperature and the current relative humidity based on the corresponding relation between the preset target warehouse temperature and the relative humidity and the refrigerating operation time;
and the first control module is used for controlling the refrigeration house to enter a defrosting mode when the accumulated refrigeration running time of the refrigeration house reaches the target refrigeration running time.
10. The apparatus of claim 9, further comprising:
the second acquisition module is used for acquiring the current temperature of the heat exchange tube of the air cooler;
the second determination module is used for determining a target defrosting exit temperature corresponding to the current target reservoir temperature based on the corresponding relation between the preset target reservoir temperature and the defrosting exit temperature;
and the second control module is used for controlling the refrigeration house to exit the defrosting mode when the current temperature of the heat exchange tube is greater than or equal to the target defrosting exit temperature.
11. The apparatus of claim 9, further comprising:
the third acquisition module is used for acquiring the current temperature in the warehouse;
the third control module is used for controlling the refrigerator to stop running if the current temperature in the refrigerator in the refrigeration mode is smaller than the minimum value of the preset temperature interval; and the refrigerator control module is also used for controlling the refrigerator to enter a refrigeration mode if the current temperature in the refrigerator reaches the maximum value of the preset temperature interval after the refrigerator stops running.
12. A controller for an air cooler, comprising:
a memory and a processor coupled to the memory;
the memory for storing a program for at least performing the defrosting control method of the air cooler according to any one of claims 1 to 8;
the processor is used for calling and executing the program stored in the memory.
13. An air cooler, characterized by, including the air cooler body with set up the control mainboard on the air cooler body, be provided with the controller as claimed in claim 12 on the control mainboard.
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| CN202011205067.0A CN112484354A (en) | 2020-11-02 | 2020-11-02 | Defrosting control method and device for air cooler, controller and air cooler |
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| CN202011205067.0A CN112484354A (en) | 2020-11-02 | 2020-11-02 | Defrosting control method and device for air cooler, controller and air cooler |
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Cited By (1)
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| CN113654190A (en) * | 2021-08-16 | 2021-11-16 | 珠海格力电器股份有限公司 | Air cooler defrosting control method and device, storage medium and air cooler |
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