CN109798634B - Defrosting method of air conditioner and air conditioner - Google Patents
Defrosting method of air conditioner and air conditioner Download PDFInfo
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- CN109798634B CN109798634B CN201910091881.5A CN201910091881A CN109798634B CN 109798634 B CN109798634 B CN 109798634B CN 201910091881 A CN201910091881 A CN 201910091881A CN 109798634 B CN109798634 B CN 109798634B
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Abstract
The embodiment of the invention discloses a defrosting method of an air conditioner and the air conditioner, relates to the field of air conditioners and solves the problem that the judgment result is inaccurate because the outdoor environment temperature and the temperature of a condenser coil pipe are adopted to judge whether defrosting is carried out or not. The specific scheme is as follows: and after the preset time period of entering the heating mode, acquiring the temperature of the evaporator coil, determining that the first moment is earlier than the second moment, and controlling to remove the frost layer on the condenser when the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is greater than or equal to a preset temperature value. The embodiment of the invention is used in the defrosting process of the air conditioner.
Description
Technical Field
The embodiment of the invention relates to the field of air conditioners, in particular to a defrosting method of an air conditioner and the air conditioner.
Background
At present, the air conditioner operates in a heating mode, and the principle of supplying heat to the indoor is as follows: the low-temperature low-pressure liquid refrigerant in the condenser on the outdoor side absorbs heat from the air through the condenser pipe wall and the fins to become gas, the gas is compressed by the suction of the compressor to become high-temperature high-pressure gas, the high-temperature high-pressure gas enters the evaporator on the indoor side to release heat to become high-pressure liquid, and finally the high-temperature high-pressure gas is throttled and reduced in pressure to become low-temperature low-pressure liquid refrigerant to flow into the condenser for the next cycle.
In the heating process, the liquid refrigerant in the condenser absorbs heat from air on the premise that the temperature of the refrigerant is lower than the temperature of outdoor air, so that water vapor in the air is condensed on the wall and the fins of the condenser, and the refrigerant absorbs heat. However, if the outdoor air temperature is lower than zero degrees centigrade, the water vapor condenses to form a frost layer and adheres to the condenser tube walls and fins. The existence of the frost layer deteriorates the heat exchange effect between air and a refrigerant, so that when the frost layer is accumulated to a certain thickness, the air conditioner needs to be defrosted.
In the prior art, the defrosting process of the air conditioner is as follows: the air conditioner can collect the outdoor environment temperature through an outdoor environment temperature sensor after the air conditioner runs in the heating mode for N minutes, and collect the temperature of the condenser coil through a sensor arranged on the condenser, and if the difference value between the outdoor environment temperature and the temperature of the condenser coil is larger than or equal to a preset temperature value, the air conditioner performs defrosting. If the difference value is smaller than the preset temperature value, the air conditioner collects the temperature again after the preset time and compares the temperature.
The prior art at least has the following technical problems: because the temperature sensors used for collecting the outdoor environment temperature and the temperature of the condenser coil are arranged on the outdoor side, the application environment is severe, the problem of failure or distortion of the collected temperature is easily caused, and the judgment of defrosting is influenced. In addition, since many outdoor units of air conditioners are installed at a high place, it is difficult to maintain and replace the outdoor temperature sensor.
Disclosure of Invention
The invention provides a defrosting method of an air conditioner and the air conditioner, which solve the problem of inaccurate judgment result caused by adopting the outdoor environment temperature and the temperature of a condenser coil pipe to judge whether defrosting is carried out or not.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a defrosting method for an air conditioner, the method being applied to the air conditioner, and the air conditioner may include: an evaporator coil and a condenser. The method can comprise the following steps: collecting the temperature of an evaporator coil after entering a preset time period of a heating mode; and when the first moment is determined to be earlier than the second moment and the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is greater than or equal to a preset temperature value, controlling to remove the frost layer on the condenser.
With reference to the first aspect, in a possible implementation manner, before determining that the first time is earlier than the second time, and that a difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, the method may further include: acquiring the operating frequency of a compressor; it is determined that the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time.
With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, before determining that the first time is earlier than the second time, and that a difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, the method may further include: acquiring the rotating speed of an indoor fan; and determining that the rotating speed of the indoor fan at the first moment is greater than or equal to the rotating speed of the indoor fan at the second moment.
With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, when it is determined that the first time is earlier than the second time, and a difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, controlling to remove the frost layer on the condenser may specifically include: and determining that the frost layer on the condenser is cleared, wherein N times are met, each time, the first time is earlier than the second time, the rotating speed of the indoor fan at the first time is greater than or equal to the rotating speed of the indoor fan at the second time, the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time, and the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, wherein N is an integer greater than 1.
In a second aspect, the present invention provides an air conditioner, which may include: the system comprises an evaporator coil, a condenser, a collecting unit, a determining unit and a control unit. The acquisition unit is used for acquiring the temperature of the evaporator coil after entering a preset time period of a heating mode. And the determining unit is used for determining that the first moment is earlier than the second moment, and the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is greater than or equal to a preset temperature value. And the control unit is used for controlling and removing the frost layer on the condenser when the first moment is earlier than the second moment and the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is larger than or equal to a preset temperature value.
With reference to the second aspect, in one possible implementation manner, the air conditioner may further include: an acquisition unit. And the acquisition unit is used for acquiring the operating frequency of the compressor. And the determining unit is also used for determining that the operating frequency of the compressor at the first moment is less than or equal to the operating frequency of the compressor at the second moment.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the obtaining unit is further configured to obtain a rotation speed of the indoor fan. And the determining unit is also used for determining that the rotating speed of the indoor fan at the first moment is greater than or equal to the rotating speed of the indoor fan at the second moment.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the control unit is specifically configured to: and determining that the frost layer on the condenser is cleared, wherein N times are met, each time, the first time is earlier than the second time, the rotating speed of the indoor fan at the first time is greater than or equal to the rotating speed of the indoor fan at the second time, the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time, and the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, wherein N is an integer greater than 1.
Specific implementations may refer to the behavior functions of the air conditioner in the defrosting method of the air conditioner provided in the first aspect or the possible implementations of the first aspect.
In a third aspect, an air conditioner is provided, including: at least one processor, a memory, a communication interface, and a communication bus. The processor is connected with the memory and the communication interface through a communication bus, the memory is used for storing computer execution instructions, and when the air conditioner runs, the processor executes the computer execution instructions stored in the memory, so that the air conditioner executes the defrosting method of the air conditioner as the first aspect or any one of the possible implementation manners of the first aspect.
In a fourth aspect, there is provided a computer storage medium having stored thereon computer-executable instructions that, when executed on an air conditioner, cause the air conditioner to perform a defrosting method of the air conditioner as in the first aspect or any one of the possible implementations of the first aspect.
The defrosting method of the air conditioner provided by the invention collects the temperature of the evaporator coil after entering the preset time period of the heating mode, determines that the first moment is earlier than the second moment, and controls to remove the frost layer on the condenser when the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is greater than or equal to the preset temperature value. In the heating mode, if the frost layer on the condenser becomes thicker, the heat exchange effect between the outdoor air and the refrigerant becomes worse, which causes the temperature of the refrigerant at the suction port of the compressor to decrease, the temperature of the refrigerant at the discharge port of the compressor to decrease, and the temperature of the refrigerant flowing into the evaporator on the indoor side to decrease. With this feature, if it is determined that the temperature of the evaporator coil is decreased over time in the heating mode and the variation value over a certain period of time is greater than or equal to the preset temperature value, it indicates that the condenser is frosted, and it is controlled to defrost. Therefore, whether defrosting is carried out or not is judged by adopting the temperature of the evaporator coil, and the temperature sensor for collecting the temperature of the evaporator coil is positioned in the shell of the indoor unit, so that the application environment is better than that of the outdoor side, the probability of failure of the temperature sensor is lower, and the accuracy of judging a defrosting result is improved. And, because this temperature sensor is located indoor side, when maintenance and change, it is more convenient.
Drawings
Fig. 1 is a schematic diagram illustrating an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a defrosting method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a defrosting method for an air conditioner according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of another air conditioner according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic composition diagram of another air conditioner according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic composition diagram of an air conditioner according to an embodiment of the present invention, and as shown in fig. 1, the air conditioner may include: at least one processor 11, a memory 12, a communication interface 13, and a communication bus 14.
The following describes the components of the air conditioner in detail with reference to fig. 1:
the processor 11 is a control center of the air conditioner, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 11 is a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention, such as: one or more Digital Signal Processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
In particular implementations, processor 11 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 1, for example, as one embodiment. Also, as an example, the air conditioner may include a plurality of processors, such as the processor 11 and the processor 15 shown in fig. 1. Each of these processors may be a Single-core processor (Single-CPU) or a Multi-core processor (Multi-CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
The Memory 12 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 12 may be self-contained and coupled to the processor 11 via a communication bus 14. The memory 12 may also be integrated with the processor 11.
In a specific implementation, the memory 12 is used for storing data in the present invention and software programs for executing the present invention. The processor 11 may perform various functions of the air conditioner by running or executing a software program stored in the memory 12 and calling data stored in the memory 12.
The communication interface 13 is any device such as a transceiver for communicating with other devices or communication Networks, such as a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), and the like. The communication interface 13 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.
The communication bus 14 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 1, but it is not intended that there be only one bus or one type of bus.
It should be noted that, in the embodiment of the present invention, the air conditioner may be a split type air conditioner, a window type air conditioner, a mobile air conditioner, or other refrigeration equipment.
In order to solve the problem that the judgment result is inaccurate by adopting the outdoor environment temperature and the temperature of the condenser coil to judge whether defrosting is performed, an embodiment of the invention provides a defrosting method of an air conditioner, as shown in fig. 2, the method may include:
201. the temperature of the evaporator coil is collected after a preset period of time to enter the heating mode.
After the air conditioner enters the heating mode, the air conditioner may first operate for a preset time period to reach a steady state, and then periodically collect the temperature of the evaporator coil through the temperature sensor installed on the evaporator, for example, the collection interval is M minutes.
202. And when the first moment is determined to be earlier than the second moment and the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is greater than or equal to a preset temperature value, controlling to remove the frost layer on the condenser.
Wherein the air conditioner can calculate the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time after collecting the temperatures of the evaporator coils at two times, such as the first time and the second time, wherein the first time is earlier than the second time by M minutes. If the difference value is larger than or equal to the preset temperature value, the condenser on the outdoor side is full of frost, and at the moment, the air conditioner can control and clear away the frost layer on the condenser. If the difference is smaller than the preset temperature value, it indicates that defrosting is not needed, and at this time, the air conditioner may recollect the temperature of the evaporator coil after M minutes of the second time, compare the difference between the temperature of the evaporator coil at the second time and the newly collected temperature with the preset temperature value, and execute corresponding operation according to the comparison result.
Optionally, in order to ensure the accuracy of the judgment result of defrosting and avoid the influence of natural fluctuation of temperature on the judgment result, when it is determined that the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to the preset temperature value, the defrosting time K may be added by 1 (the initial value of K is zero), and recording is performed, and then the steps of collecting temperature, calculating the difference, and comparing the difference with the preset temperature value are executed in a circulating manner until it is determined that K is greater than or equal to the preset time, and defrosting is controlled.
It should be noted that, in the embodiment of the present invention, the preset time period for achieving the stable operation of the air conditioner in step 201, the M minutes and the defrosting time K in step 202 may be obtained in advance through experiments, and are prestored in the air conditioner.
The defrosting method of the air conditioner provided by the invention collects the temperature of the evaporator coil after entering the preset time period of the heating mode, determines that the first moment is earlier than the second moment, and controls to remove the frost layer on the condenser when the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is greater than or equal to the preset temperature value. In the heating mode, if the frost layer on the condenser becomes thicker, the heat exchange effect between the outdoor air and the refrigerant becomes worse, which causes the temperature of the refrigerant at the suction port of the compressor to decrease, the temperature of the refrigerant at the discharge port of the compressor to decrease, and the temperature of the refrigerant flowing into the evaporator on the indoor side to decrease. With this feature, if it is determined that the temperature of the evaporator coil is decreased over time in the heating mode and the variation value over a certain period of time is greater than or equal to the preset temperature value, it indicates that the condenser is frosted, and it is controlled to defrost. Therefore, whether defrosting is carried out or not is judged by adopting the temperature of the evaporator coil, and the temperature sensor for collecting the temperature of the evaporator coil is positioned in the shell of the indoor unit, so that the application environment is better than that of the outdoor side, the probability of failure of the temperature sensor is lower, and the accuracy of judging a defrosting result is improved. And, because this temperature sensor is located indoor side, when maintenance and change, it is more convenient.
Further, in the embodiment of the present invention, since the air conditioner operates in the heating mode, the operating frequency of the compressor may change, which may cause a change in the temperature of the evaporator coil, for example, in the heating mode, the operating frequency of the compressor is decreased, which may cause the temperature of the evaporator coil to decrease; an increase in the operating frequency will cause the temperature of the evaporator coil to also increase. Therefore, in determining whether to defrost, the determination of the compressor operating frequency may be increased in the defrost condition in order to preclude a decrease in the evaporator coil temperature from being caused by a decrease in the compressor operating frequency. Specifically, as shown in fig. 3, before the step 202, the method may further include:
203. the operating frequency of the compressor is obtained.
Wherein the air conditioner may acquire the operating frequency of the compressor while periodically collecting the temperature of the evaporator coil in step 201.
204. It is determined that the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time.
After acquiring the operating frequencies of the compressor at the first time and the second time, the air conditioner may compare the two operating frequencies. If the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time, it indicates that the operating frequency of the compressor is increased in the heating mode, which causes the temperature of the evaporator coil to increase, and the temperature of the evaporator coil is decreased, which is caused by the frost formation of the condenser. If the operating frequency of the compressor at the first time is greater than the operating frequency of the compressor at the second time, it is indicated that the operating frequency of the compressor is decreased in the heating mode, which causes the temperature of the evaporator coil to decrease, and at this time, it is not possible to determine whether the decrease in the temperature of the evaporator coil is caused by the frost formation of the condenser or by the decrease in the operating frequency. In this way, the compressor can acquire the operating frequency of the compressor again after M minutes of the second moment, collect the temperature of the evaporator coil, compare the newly acquired operating frequency with the operating frequency of the second moment, calculate the difference between the temperature of the evaporator coil of the second moment and the newly acquired temperature if the newly acquired operating frequency is greater than or equal to the operating frequency of the compressor of the second moment, and control defrosting only when the difference is determined to be greater than or equal to the preset temperature value.
Further, in the embodiment of the present invention, since the air conditioner is operated in the heating mode, the rotation speed of the indoor fan may change, which may cause the temperature of the evaporator coil to change, for example, in the heating mode, the rotation speed of the indoor fan is reduced, which may increase the temperature of the evaporator coil; an increase in the speed of the indoor fan will cause the evaporator coil to decrease in temperature. Therefore, in determining whether to defrost, in order to exclude the decrease in the evaporator coil temperature caused by the increase in the rotation speed of the indoor fan, the determination of the rotation speed of the indoor fan may also be increased in the defrosting condition. Specifically, as shown in fig. 3, before the step 202, the method may further include:
205. and acquiring the rotating speed of the indoor fan.
The air conditioner can acquire the rotating speed of the indoor fan while acquiring the temperature of the evaporator coil in step 201 and acquiring the operating frequency of the compressor in step 203.
206. And determining that the rotating speed of the indoor fan at the first moment is greater than or equal to the rotating speed of the indoor fan at the second moment.
After the air conditioner acquires the rotating speeds of the indoor fans at the first moment and the second moment, the two rotating speeds can be compared. If the rotation speed of the indoor fan at the first moment is greater than or equal to the rotation speed of the indoor fan at the second moment, the heating mode is indicated, the rotation speed of the indoor fan is reduced, the temperature of the evaporator coil is increased, and at the moment, if the operation frequency of the compressor is determined to be increased, the temperature reduction of the evaporator coil caused by the frosting of the condenser can be obtained. If the rotation speed of the indoor fan at the first moment is less than that at the second moment, it indicates that the increase of the rotation speed of the indoor fan in the heating mode causes the temperature of the evaporator coil to decrease, and at this time, if it is determined that the operation frequency of the compressor is increased, it cannot be determined whether the temperature decrease of the evaporator coil is caused by the frost formation of the condenser or the increase of the rotation speed. Therefore, after M minutes at the second moment, the compressor can acquire the operating frequency of the compressor and the rotating speed of the indoor fan again, collect the temperature of the evaporator coil, compare the acquired operating frequency with the operating frequency at the second moment, compare the acquired rotating speed of the indoor fan with the rotating speed at the second moment, if the acquired operating frequency is greater than or equal to the operating frequency of the compressor at the second moment and the acquired rotating speed is less than or equal to the rotating speed at the second moment, calculate the difference between the temperature of the evaporator coil at the second moment and the acquired temperature again, and control defrosting when the difference is determined to be greater than or equal to the preset temperature value.
Further, in the embodiment of the present invention, in order to ensure the accuracy of the judgment result of the defrosting, the air conditioner may determine that the defrosting operation is performed N times, where each time satisfies the condition that the first time is earlier than the second time, the rotation speed of the indoor fan at the first time is greater than or equal to the rotation speed of the indoor fan at the second time, the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time, and the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, and N is an integer greater than 1.
The scheme provided by the embodiment of the invention is mainly introduced from the perspective of an air conditioner. It is understood that the air conditioner includes hardware structures and/or software modules corresponding to the respective functions in order to implement the above-described functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, in conjunction with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The embodiment of the present invention may perform the division of the functional modules for the air conditioner according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
In the case of dividing each function module according to each function, fig. 4 shows another possible composition diagram of the air conditioner related to the above embodiment, as shown in fig. 4, the air conditioner may include: an acquisition unit 31, a determination unit 32 and a control unit 33.
The acquisition unit 31 is configured to support the air conditioner to perform step 201 in the defrosting method of the air conditioner shown in fig. 2.
A determination unit 32, configured to support the air conditioner to perform the determination that the first time is earlier than the second time in step 202 of the defrosting method of the air conditioner shown in fig. 2, and the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, step 204, step 206 of the defrosting method of the air conditioner shown in fig. 3.
A control unit 33 for supporting the air conditioner to perform the control of removing the frost layer on the condenser as described in step 202 of the defrosting method of the air conditioner shown in fig. 2.
Further, in the embodiment of the present invention, as shown in fig. 5, the air conditioner may further include: an acquisition unit 34.
And an obtaining unit 34, configured to support the air conditioner to perform steps 203 and 205 in the defrosting method of the air conditioner shown in fig. 3.
It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
The air conditioner provided by the embodiment of the invention is used for executing the defrosting method of the air conditioner, so that the same effect as the defrosting method of the air conditioner can be achieved.
In the case of an integrated unit, fig. 6 shows another possible schematic composition of the air conditioner according to the above-described embodiment. As shown in fig. 6, the air conditioner includes: a processing module 41, a communication module 42 and a storage module 43.
Wherein the processing module 41 is used for controlling and managing the action of the air conditioner, for example, the processing module 41 is used for supporting the air conditioner to execute step 201, step 202 in fig. 2, step 203, step 204, step 205, step 206 in fig. 3, and/or other processes for the technology described herein. The communication module 42 is used to support the communication between the air conditioner and other network entities. And a storage module 43 for storing program codes and data of the air conditioner.
The processing module 41 may be the processor in fig. 1. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module 42 may be the communication interface of fig. 1. The storage module 43 may be the memory of fig. 1.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be essentially or partially contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A defrosting method of an air conditioner is applied to the air conditioner, and the air conditioner comprises the following steps: an evaporator coil and a condenser, wherein the method comprises:
collecting the temperature of the evaporator coil after entering a preset time period of a heating mode;
when the first moment is earlier than the second moment and the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is larger than or equal to a preset temperature value, controlling to remove a frost layer on the condenser;
before the determining that the first time is earlier than the second time and the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, the method further comprises:
acquiring the operating frequency of a compressor;
determining that the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time;
acquiring the rotating speed of an indoor fan;
and determining that the rotating speed of the indoor fan at the first moment is greater than or equal to the rotating speed of the indoor fan at the second moment.
2. The defrosting method of an air conditioner according to claim 1, wherein the determining that the first time is earlier than the second time and the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to a preset temperature value, controlling to remove the frost layer on the condenser comprises:
determining that the frost layer on the condenser is cleared, wherein N times are met, each time, the first time is earlier than the second time, the rotating speed of the indoor fan at the first time is greater than or equal to the rotating speed of the indoor fan at the second time, the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time, and when the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to the preset temperature value, the frost layer on the condenser is controlled to be cleared, wherein N is an integer greater than 1.
3. An air conditioner, characterized in that the air conditioner comprises: the device comprises an evaporator coil, a condenser, a collecting unit, a determining unit and a control unit;
the acquisition unit is used for acquiring the temperature of the evaporator coil after entering a preset time period of a heating mode;
the determining unit is used for determining that a first moment is earlier than a second moment, and the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is greater than or equal to a preset temperature value;
the control unit is used for controlling and clearing the frost layer on the condenser when the first moment is determined to be earlier than the second moment and the difference value between the temperature of the evaporator coil at the first moment and the temperature of the evaporator coil at the second moment is greater than or equal to the preset temperature value;
the air conditioner further includes: an acquisition unit;
the acquisition unit is used for acquiring the operating frequency of the compressor;
the determining unit is further configured to determine that the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time;
the acquisition unit is also used for acquiring the rotating speed of the indoor fan;
the determining unit is further configured to determine that the rotation speed of the indoor fan at the first time is greater than or equal to the rotation speed of the indoor fan at the second time.
4. The air conditioner according to claim 3, wherein the control unit is specifically configured to:
determining that the frost layer on the condenser is cleared, wherein N times are met, each time, the first time is earlier than the second time, the rotating speed of the indoor fan at the first time is greater than or equal to the rotating speed of the indoor fan at the second time, the operating frequency of the compressor at the first time is less than or equal to the operating frequency of the compressor at the second time, and when the difference between the temperature of the evaporator coil at the first time and the temperature of the evaporator coil at the second time is greater than or equal to the preset temperature value, the frost layer on the condenser is controlled to be cleared, wherein N is an integer greater than 1.
5. An air conditioner, characterized in that the air conditioner comprises: a processor, a memory, a communication interface, and a communication bus;
the processor is connected with the memory and the communication interface through the communication bus, the memory is used for storing computer execution instructions, and when the air conditioner runs, the processor executes the computer execution instructions stored by the memory so as to enable the air conditioner to execute the defrosting method of the air conditioner according to any one of claims 1-2.
6. A computer storage medium comprising computer-executable instructions that, when run on an air conditioner, cause the air conditioner to perform the defrosting method of the air conditioner of any one of claims 1-2.
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| CN110505127B (en) * | 2019-07-09 | 2021-09-28 | 青岛海信日立空调系统有限公司 | Instruction processing method and device |
| CN110469961B (en) * | 2019-07-24 | 2022-09-06 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110469960B (en) * | 2019-07-24 | 2022-09-06 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110469962B (en) * | 2019-07-24 | 2022-12-20 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110481270B (en) * | 2019-08-27 | 2023-08-01 | 江苏阿尔特空调实业有限责任公司 | Throttle control method and device for air conditioner of electric bus and air conditioning system |
| CN115076905B (en) * | 2022-08-10 | 2023-07-18 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device and air conditioner |
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