CN110454952B - Control method of outdoor fan and air conditioner - Google Patents
Control method of outdoor fan and air conditioner Download PDFInfo
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- CN110454952B CN110454952B CN201910598864.0A CN201910598864A CN110454952B CN 110454952 B CN110454952 B CN 110454952B CN 201910598864 A CN201910598864 A CN 201910598864A CN 110454952 B CN110454952 B CN 110454952B
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000005057 refrigeration Methods 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The embodiment of the invention discloses a control method of an outdoor fan and an air conditioner, relates to the technical field of air conditioners and solves the problems that the refrigerating capacity of the air conditioner is poor and the stability is poor due to the fact that the rotating speed of the outdoor fan is not adjusted according to the change of a load or due to the fact that the rotating speed of the outdoor fan is not adjusted timely. The specific scheme is as follows: when the low-temperature refrigeration working condition is determined, the temperature of the indoor and outdoor coils in the current period is obtained, the target rotating speed of the outdoor fan is determined according to a first difference value between the temperature of the outdoor coil and the temperature of the outdoor coil in the previous period, and the outdoor fan is controlled to operate at the target rotating speed in the current period. The embodiment of the invention is used for the refrigeration process of the air conditioner under the low-temperature refrigeration working condition.
Description
Technical Field
The embodiment of the invention relates to the technical field of air conditioners, in particular to a control method of an outdoor fan and an air conditioner.
Background
The low-temperature refrigeration working condition refers to that refrigeration and cooling are carried out under the conditions that the outdoor environment temperature is very low and the indoor environment temperature is very high, and the key of refrigeration under the low-temperature refrigeration working condition is the control of an outdoor fan.
In the prior art, a temperature zone and a corresponding wind speed gear can be prestored in the air conditioner. Therefore, under the low-temperature refrigeration working condition, when the air conditioner needs to refrigerate, the pre-stored temperature area can be found according to the outdoor environment temperature, so that the corresponding wind speed gear is determined, and the outdoor fan is controlled to operate at the wind speed of the gear.
As the operating time of the air conditioner increases, the load of the outdoor unit is changed. However, if the air conditioner does not track the change of the load in time, the outdoor fan still operates at the initially determined fixed rotation speed or the change response of the outdoor fan is slow, which may cause the fluctuation of the air conditioner, the deterioration of the cooling capacity, and is not favorable for the precise control of the air conditioner.
Disclosure of Invention
The invention provides a control method of an outdoor fan and an air conditioner, and solves the problems that the refrigerating capacity of the air conditioner is poor and the stability is poor due to the fact that the rotating speed of the outdoor fan is not adjusted according to the change of a load or due to the fact that the rotating speed of the outdoor fan is not adjusted timely.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a method for controlling an outdoor fan, which may include: when the low-temperature refrigeration working condition is determined, the temperature of the indoor and outdoor coil pipes in the current period is obtained; determining a target rotating speed of an outdoor fan according to a first difference value between the temperature of the outdoor coil and the temperature of the outdoor coil in the previous period; and controlling the outdoor fan to operate at the target rotating speed in the current period.
With reference to the first aspect, in a possible implementation manner, determining a target rotation speed of the outdoor fan according to a first difference between the temperature of the outdoor coil and the temperature of the outdoor coil in the previous period may specifically include: if the temperature of the outdoor coil pipe is lower than a first preset temperature value, determining the lowest rotating speed at which the outdoor fan can stably operate as a target rotating speed; if the temperature of the outdoor coil is greater than or equal to a first preset temperature value and less than a second preset temperature value, determining the rotating speed variation of the outdoor fan by adopting a Proportional Integral (PI) control mode according to the first difference and the difference between the temperature of the outdoor coil and the second preset temperature value, and determining a target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period; if the temperature of the outdoor coil pipe is greater than or equal to a second preset temperature value and less than a third preset temperature value, determining the rotating speed variation of the outdoor fan by adopting a proportional-integral control mode according to the first difference value, and determining a target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period; if the temperature of the outdoor coil is greater than or equal to a third preset temperature value, determining the rotating speed variation of the outdoor fan by adopting a proportional-integral control mode according to the first difference and the difference between the temperature of the outdoor coil and the third preset temperature value, and determining a target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period.
With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, before obtaining the temperature of the outdoor coil in the current period when the low-temperature cooling condition is determined, the method further includes: after starting, determining the initial rotating speed of the outdoor fan according to the outdoor environment temperature; and controlling the outdoor fan to operate at the initial rotating speed for the initial time period.
With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the determining that the refrigerant is in the low-temperature refrigeration condition may specifically include: and when the outdoor environment temperature after the initial operation time period is determined to be less than or equal to the low-temperature preset value, determining that the outdoor environment temperature is in the low-temperature refrigeration working condition.
In a second aspect, the present invention provides an air conditioner, which may include: the device comprises an acquisition unit, a determination unit and a control unit; the acquisition unit is used for acquiring the temperature of the indoor and outdoor coils in the current period when the low-temperature refrigeration working condition is determined; the determining unit is used for determining the target rotating speed of the outdoor fan according to a first difference value between the temperature of the outdoor coil and the temperature of the outdoor coil in the previous period; and the control unit is used for controlling the outdoor fan to operate at the target rotating speed in the current period.
With reference to the second aspect, in a possible implementation manner, the determining unit is specifically configured to: if the temperature of the outdoor coil pipe is lower than a first preset temperature value, determining the lowest rotating speed at which the outdoor fan can stably operate as a target rotating speed; if the temperature of the outdoor coil is greater than or equal to a first preset temperature value and less than a second preset temperature value, determining the rotating speed variation of the outdoor fan by adopting a proportional-integral control mode according to the first difference and the difference between the temperature of the outdoor coil and the second preset temperature value, and determining a target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period; if the temperature of the outdoor coil pipe is greater than or equal to a second preset temperature value and less than a third preset temperature value, determining the rotating speed variation of the outdoor fan by adopting a proportional-integral control mode according to the first difference value, and determining a target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period; if the temperature of the outdoor coil is greater than or equal to a third preset temperature value, determining the rotating speed variation of the outdoor fan by adopting a proportional-integral control mode according to the first difference and the difference between the temperature of the outdoor coil and the third preset temperature value, and determining a target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the determining unit is further configured to determine an initial rotation speed of the outdoor fan according to the outdoor environment temperature after the start; and the control unit is also used for controlling the outdoor fan to operate at the initial rotating speed for the initial time period.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the determining unit is specifically configured to: and when the outdoor environment temperature after the initial operation time period is determined to be less than or equal to the low-temperature preset value, determining that the outdoor environment temperature is in the low-temperature refrigeration working condition.
Specific implementation manners may refer to the behavior function of the air conditioner in the control method of the outdoor fan provided in the first aspect or the possible implementation manners 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 control method of the outdoor fan according to the first aspect or any one of the possible implementation manners of the first aspect.
In a fourth aspect, a computer storage medium is provided, on which computer execution instructions are stored, which, when executed on an air conditioner, cause the air conditioner to perform the method for controlling an outdoor fan according to the first aspect or any one of the possible implementations of the first aspect.
The control method of the outdoor fan provided by the invention comprises the steps of obtaining the temperature of the indoor and outdoor coil pipes in the current period when the outdoor fan is determined to be in the low-temperature refrigeration working condition, determining the target rotating speed of the outdoor fan according to the first difference value between the temperature of the outdoor coil pipe and the temperature of the outdoor coil pipe in the previous period, and controlling the outdoor fan to operate at the target rotating speed in the current period. Compared with the prior art that a temperature range corresponds to a fixed rotating speed, the rotating speed control method can determine the corresponding rotating speed in real time according to the change condition of the current load, and realize accurate control of the rotating speed, thereby reducing the fluctuation of the air conditioner and improving the stability of the air conditioner.
Drawings
Fig. 1 is a schematic diagram illustrating an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of an outdoor fan according to an embodiment of the present invention;
fig. 3 is a flowchart of another control method for an outdoor fan according to an 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.
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 (enhanced Industry Standard Architecture) 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 the air conditioner in the embodiment of the present invention may be in the form of a unit machine, a multi-split air conditioner, or a multi-split air conditioner.
In order to solve the problems that the refrigerating capacity of an air conditioner is poor and the stability is poor due to the fact that the rotating speed of an outdoor fan is not adjusted according to the change of a load or due to the fact that the rotating speed of the outdoor fan is not adjusted timely, the embodiment of the invention provides a control method of the outdoor fan, the method is applied to the air conditioner, and an outdoor unit of the air conditioner comprises the outdoor fan and an outdoor coil. As shown in fig. 2, the method may include:
201. and when the low-temperature refrigeration working condition is determined, the temperature of the indoor and outdoor coil pipes in the current period is obtained.
After the air conditioner is started, whether the air conditioner is in a low-temperature refrigeration working condition or not can be judged according to the current outdoor environment temperature. If the current outdoor environment temperature is greater than the pre-stored low-temperature preset value, the low-temperature refrigeration working condition is determined, and the air conditioner can control the outdoor fan to operate according to a normal mode. If the current outdoor environment temperature is less than or equal to the low-temperature preset value, it is determined that the air conditioner is in the low-temperature refrigeration working condition, and at this time, the air conditioner may perform refrigeration control periodically, which is described here by taking one cycle as an example. The air conditioner can acquire the temperature of the indoor and outdoor coils in the current period. Compared with the outdoor environment temperature, the temperature of the outdoor coil pipe can more accurately reflect the load condition of the outdoor unit.
In a specific implementation, the air conditioner may obtain the temperature of the outdoor coil through a coil temperature sensor installed in the outdoor unit. Or, the air conditioner may also acquire the condensing pressure through a condensing pressure sensor installed in the outdoor unit, and acquire the temperature of the outdoor coil corresponding to the current condensing pressure according to the correspondence between the condensing pressure and the temperature of the outdoor coil.
202. And determining the target rotating speed of the outdoor fan according to a first difference value between the temperature of the outdoor coil and the temperature of the outdoor coil in the previous period.
After the air conditioner obtains the temperature of the indoor and outdoor coils in the current period, the target rotating speed of the outdoor fan can be determined according to a first difference value between the temperature and the temperature of the outdoor coil in the previous period. Specifically, if the temperature of the outdoor coil pipe in the current period is less than a first preset temperature value, the minimum rotational speed at which the outdoor fan can stably operate may be determined as the target rotational speed. If the temperature of the outdoor coil is greater than or equal to a first preset temperature value and less than a second preset temperature value, the rotation speed variation of the outdoor fan can be determined by adopting a proportional-integral control mode according to the first difference and the difference between the temperature of the indoor coil and the outdoor coil in the current period and the second preset temperature value, and the target rotation speed is determined according to the rotation speed variation and the rotation speed of the outdoor fan in the previous period. If the temperature of the outdoor coil pipe is greater than or equal to the second preset temperature value and less than the third preset temperature value, the rotating speed variation of the outdoor fan can be determined by adopting a proportional-integral control mode according to the first difference value, and the target rotating speed is determined according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period. If the temperature of the outdoor coil is greater than or equal to the third preset temperature value, the rotation speed variation of the outdoor fan can be determined by adopting a proportional-integral control mode according to the first difference and the difference between the temperature of the indoor coil and the temperature of the outdoor coil in the current period and the third preset temperature value, and the target rotation speed is determined according to the rotation speed variation and the rotation speed of the outdoor fan in the previous period. Therefore, when the temperature of the outdoor coil is greater than or equal to the first preset temperature value, the temperature of the outdoor coil is partitioned, each partition does not correspond to one fixed rotating speed, and the corresponding rotating speed is determined according to each temperature in the partition in real time to track the load condition of the outdoor unit in real time.
In one possible implementation manner, when the temperature of the outdoor coil is within the range of the first preset temperature value and the second preset temperature value, the process of determining the target rotation speed by the air conditioner is as follows: assuming that the first difference is A, and the difference between the temperature of the indoor and outdoor coils in the current period and the second preset temperature value is B. The upper and lower limits and the dead band of a and B may be set, respectively, i.e. setting: setting a to 0 when a is within the first range and setting B to 0 when B is within the second range indicates that the amount of change in temperature is negligibly small by setting the difference a or B to 0. The following formula is then used: and R is calculated, wherein P is a prestored proportionality constant, and I is a prestored integral constant. And finally, calculating the sum of the R and the calculated allowance in the previous period to obtain a PI calculation result R ', dividing the R' by the gain value to obtain a rotating speed variation, wherein the rotating speed variation is usually an integer, and then calculating the sum of the rotating speed variation and the rotating speed in the previous period to obtain the target rotating speed. And the formula can be adopted: r '-the gain value of the rotational speed variation amount x, the calculated margin of the current cycle is obtained for use in calculating the rotational speed variation amount of the next cycle, for example, assuming that R' is 7 and the gain value is 5, the rotational speed variation amount is 1 and the calculated margin of the current cycle is 2.
When the temperature of the outdoor coil is within the second preset temperature value and the third preset temperature value range and is greater than the third preset temperature value, the method for determining the target rotating speed is the same as the method for determining the target rotating speed when the temperature of the outdoor coil is within the first preset temperature value and the second preset temperature value range, wherein the difference B is always 0 when the temperature of the outdoor coil is within the second preset temperature value and the third preset temperature value range.
It should be noted that, in the embodiment of the present invention, the motor for driving the fan to operate may be a variable speed motor, such as a continuously variable speed motor.
203. And controlling the outdoor fan to operate at the target rotating speed in the current period.
After the target rotating speed is determined, the air conditioner can control the outdoor fan to operate at the target rotating speed in the current period. After the current period is finished, the air conditioner can obtain the temperature of the outdoor coil pipe again in the next period, determine the temperature partition in which the temperature is located, determine the rotating speed of the outdoor fan in a mode corresponding to the temperature partition, and control the outdoor fan to operate at the rotating speed in the next period.
Further, in the embodiment of the present invention, in order to accurately determine the low-temperature refrigeration condition, before the step 201 is executed, the outdoor fan may be controlled to operate for a period of time, so as to avoid interference of other factors. Specifically, as shown in fig. 3, the method may further include:
204. and after starting, determining the initial rotating speed of the outdoor fan according to the outdoor environment temperature.
The corresponding relation between the outdoor environment temperature and the rotating speed of the fan can be prestored in the air conditioner, so that the air conditioner can determine the corresponding initial rotating speed according to the current outdoor environment temperature after being started.
205. And controlling the outdoor fan to operate at the initial rotating speed for the initial time period.
After the air conditioner controls the outdoor fan to operate at the initial rotating speed for the initial time period, the outdoor environment temperature can be obtained again, and whether the outdoor environment temperature is in the low-temperature refrigeration working condition or not is judged according to the outdoor environment temperature.
The control method of the outdoor fan provided by the invention comprises the steps of obtaining the temperature of the indoor and outdoor coil pipes in the current period when the outdoor fan is determined to be in the low-temperature refrigeration working condition, determining the target rotating speed of the outdoor fan according to the first difference value between the temperature of the outdoor coil pipe and the temperature of the outdoor coil pipe in the previous period, and controlling the outdoor fan to operate at the target rotating speed in the current period. Compared with the prior art that a temperature range corresponds to a fixed rotating speed, the rotating speed control method can determine the corresponding rotating speed in real time according to the change condition of the current load, and realize accurate control of the rotating speed, thereby reducing the fluctuation of the air conditioner and improving the stability of the air conditioner.
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.
Wherein, the obtaining unit 31 is configured to support the air conditioner to execute step 201 in the control method of the outdoor fan shown in fig. 2.
And a determination unit 32 for supporting the air conditioner to perform step 202 of the control method of the outdoor fan shown in fig. 2 and step 204 of the control method of the outdoor fan shown in fig. 3.
A control unit 33 for supporting the air conditioner to perform step 203 of the control method of the outdoor fan shown in fig. 2 and step 205 of the control method of the outdoor fan 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 control method of the outdoor fan, so that the same effect as the control method of the outdoor fan can be achieved.
In the case of an integrated unit, fig. 5 shows another possible schematic composition of the air conditioner according to the above-described embodiment. As shown in fig. 5, 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, step 203 in fig. 2, step 204, step 205 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 (8)
1. A control method of an outdoor fan, the method comprising:
when the low-temperature refrigeration working condition is determined, the temperature of the indoor and outdoor coil pipes in the current period is obtained;
determining a target speed of an outdoor fan according to a first difference between the temperature of the outdoor coil and the temperature of the outdoor coil in a previous cycle, including:
if the temperature of the outdoor coil pipe is lower than a first preset temperature value, determining the lowest rotating speed at which the outdoor fan can stably operate as the target rotating speed;
if the temperature of the outdoor coil pipe is greater than or equal to the first preset temperature value and less than a second preset temperature value, determining the rotating speed variation of the outdoor fan by adopting a proportional-integral control mode according to the first difference and the difference between the temperature of the outdoor coil pipe and the second preset temperature value, and determining the target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period;
if the temperature of the outdoor coil pipe is greater than or equal to the second preset temperature value and less than a third preset temperature value, determining the rotating speed variation of the outdoor fan by adopting the proportional-integral control mode according to the first difference value, and determining the target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period;
if the temperature of the outdoor coil pipe is greater than or equal to the third preset temperature value, determining the rotating speed variation of the outdoor fan by adopting the proportional-integral control mode according to the first difference and the difference between the temperature of the outdoor coil pipe and the third preset temperature value, and determining the target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period;
and controlling the outdoor fan to operate at the target rotating speed in the current period.
2. The method of claim 1, wherein before obtaining the temperature of the outdoor coil in the indoor area during the current period when the determination is made to be in the low-temperature cooling condition, the method further comprises:
after starting, determining the initial rotating speed of the outdoor fan according to the outdoor environment temperature;
and controlling the outdoor fan to operate at the initial rotating speed for an initial time period.
3. The method of claim 2, wherein the determining that the outdoor fan is in the low-temperature cooling condition comprises:
and when the outdoor environment temperature after the initial time period is determined to be less than or equal to a low-temperature preset value, determining that the outdoor environment temperature is in the low-temperature refrigeration working condition.
4. An air conditioner, characterized in that the air conditioner comprises: the device comprises an acquisition unit, a determination unit and a control unit;
the acquisition unit is used for acquiring the temperature of the indoor and outdoor coil pipes in the current period when the low-temperature refrigeration working condition is determined;
the determining unit is used for determining the target rotating speed of the outdoor fan according to a first difference value between the temperature of the outdoor coil and the temperature of the outdoor coil in the previous period;
the determining unit is specifically configured to:
if the temperature of the outdoor coil pipe is lower than a first preset temperature value, determining the lowest rotating speed at which the outdoor fan can stably operate as the target rotating speed;
if the temperature of the outdoor coil pipe is greater than or equal to the first preset temperature value and less than a second preset temperature value, determining the rotating speed variation of the outdoor fan by adopting a proportional-integral control mode according to the first difference and the difference between the temperature of the outdoor coil pipe and the second preset temperature value, and determining the target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period;
if the temperature of the outdoor coil pipe is greater than or equal to the second preset temperature value and less than a third preset temperature value, determining the rotating speed variation of the outdoor fan by adopting the proportional-integral control mode according to the first difference value, and determining the target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period;
if the temperature of the outdoor coil pipe is greater than or equal to the third preset temperature value, determining the rotating speed variation of the outdoor fan by adopting the proportional-integral control mode according to the first difference and the difference between the temperature of the outdoor coil pipe and the third preset temperature value, and determining the target rotating speed according to the rotating speed variation and the rotating speed of the outdoor fan in the previous period;
and the control unit is used for controlling the outdoor fan to operate at the target rotating speed in the current period.
5. The air conditioner according to claim 4,
the determining unit is further used for determining the initial rotating speed of the outdoor fan according to the outdoor environment temperature after the outdoor fan is started;
the control unit is further used for controlling the outdoor fan to operate for an initial time period at the initial rotating speed.
6. The air conditioner according to claim 5, wherein the determining unit is specifically configured to:
and when the outdoor environment temperature after the initial time period is determined to be less than or equal to a low-temperature preset value, determining that the outdoor environment temperature is in the low-temperature refrigeration working condition.
7. 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 is operated, the processor executes the computer execution instructions stored in the memory so as to enable the air conditioner to execute the control method of the outdoor fan according to any one of claims 1-3.
8. A computer storage medium, characterized in that the computer storage medium comprises computer-executable instructions that, when run on an air conditioner, cause the air conditioner to perform the method of controlling an outdoor fan according to any one of claims 1 to 3.
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| CN111141009A (en) * | 2019-12-31 | 2020-05-12 | Tcl空调器(中山)有限公司 | Refrigeration control method and device and storage medium |
| CN111578458B (en) * | 2020-05-13 | 2022-03-01 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer storage medium |
| CN113465129A (en) * | 2021-06-18 | 2021-10-01 | 青岛海尔空调电子有限公司 | Control method of air conditioner and air conditioner |
| CN113819640B (en) * | 2021-09-08 | 2023-03-21 | 青岛海尔空调器有限总公司 | Method and device for controlling outdoor fan and air conditioner outdoor unit |
| CN115355598B (en) * | 2022-08-18 | 2024-07-30 | 宁波奥克斯电气股份有限公司 | Defrosting control method of air conditioner and air conditioner |
| CN116007162A (en) * | 2022-10-25 | 2023-04-25 | 四川长虹空调有限公司 | Control method of outdoor direct-current fan of multi-split air conditioner |
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Address after: No.1 Haixin Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province Patentee after: Hisense Air Conditioning Co.,Ltd. Country or region after: China Address before: No. 151, Zhuzhou Road, Laoshan District, Qingdao, Shandong Patentee before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Country or region before: China |