CN110260525B - Control method and device of fan and computer readable storage medium - Google Patents

Control method and device of fan and computer readable storage medium Download PDF

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Publication number
CN110260525B
CN110260525B CN201910496364.6A CN201910496364A CN110260525B CN 110260525 B CN110260525 B CN 110260525B CN 201910496364 A CN201910496364 A CN 201910496364A CN 110260525 B CN110260525 B CN 110260525B
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gear
fan
temperature
switching
wind
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CN110260525A (en
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张磊
李福水
吴先应
赖昌华
任宗垟
李顺华
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Guangdong Haiwu Technology Co Ltd
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Guangdong Haiwu Technology Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

The invention discloses a control method, equipment and a computer readable storage medium of a fan, wherein the control method comprises the following steps: detecting ambient temperature TEnvironment(s)According to the ambient temperature TEnvironment(s)The initial gear of the fan is determined,the gears of the fan comprise a high gear, a low gear and a stop gear, wherein the wind speed of the high gear, the low gear and the stop gear sequentially decreases; periodic detection of the auxiliary temperature TAssistance ofWill TAssistance ofCompare with the setting value and according to the gear of the control adjustment fan of comparison result, specifically do: if TAssistance ofLess than or equal to the safe auxiliary temperature TbControlling the wind speed of the fan to rise by one gear; if Tb＜TAssistance ofAuxiliary temperature T for switching gear of fan less than or equal tocControlling the wind speed of the fan to keep the current gear; if TAssistance of＞TcWhen the wind speed is higher than the set wind speed, controlling the wind speed of the fan to be lower by one gear; the control method can automatically adjust the gear of the fan according to the auxiliary temperature, properly reduce the evaporation heat exchange amount, avoid overhigh exhaust temperature or high-pressure protection of the unit and ensure the reliable operation of the unit.

Description

Control method and device of fan and computer readable storage medium
Technical Field
The present invention relates to the field of wind turbine technology, and more particularly, to a method and apparatus for controlling a wind turbine, and a computer-readable storage medium.
Background
The general low-environment-temperature air source heat pump hot water unit has the operation range of-20-43 ℃, the operation range is larger, and in order to meet the heating capacity and energy efficiency under the low-temperature working condition, the unit generally adopts a fan with higher air volume. However, if the fan continuously operates with high air volume, the high air volume of the fan can cause large evaporation heat exchange amount, so that the unit has overhigh exhaust temperature or high-pressure protection. Therefore, when the ambient temperature is higher, the air quantity of the fan needs to be reduced or the fan needs to be stopped so as to ensure the normal operation of the unit.
The control logic of the high-loop temperature air-stopping machine of the existing low-temperature air source heat pump hot water unit is as follows:
a、Tenvironment(s)＞TTemperature of the fanWhen, if TExhaust temperatureThe safe exhaust temperature is less than or equal to 85 ℃, and the fan operates; if TExhaust temperatureStopping the fan when the temperature of the exhaust gas of the fan is higher than 105 ℃;
b、Tenvironment(s)＝TTemperature of the fanWhen the fan is in use, the original state of the fan is kept;
c、Tenvironment(s)＜TTemperature of the fanAnd when the fan runs, the fan runs.
Wherein: t isEnvironment(s)Is ambient temperature, in units; t isExhaust temperatureIs the exhaust temperature in units; t isTemperature of the fanThe preset ambient temperature of the air stopping machine is generally set to be 28 ℃.
The existing control scheme of the fan has the following problems: when the condition of stopping the fan is met, the fan can be directly stopped from high-speed operation, the operation condition of the low-temperature air source heat pump hot water unit is greatly influenced, the opening degree adjustment reaction of an electronic expansion valve of the unit is not performed, the evaporation amount is reduced, and the liquid return of a compressor of the unit can be caused in serious cases; t isEnvironment(s)＜TTemperature of the fanWhen the environment temperature is 20 ℃ to 28 ℃, the low-temperature air source heat pump hot water unit also has the problem that the fan is always started to operate at a high speed, and the generated high air volume causes large evaporation heat exchange quantity, so that the exhaust temperature is overhigh.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a control method, apparatus, and computer-readable storage medium for a wind turbine that overcome the above problems.
According to an aspect of the present invention, there is provided a control method of a fan, comprising: the method comprises the following steps:
detecting ambient temperature TEnvironment(s)According to the ambient temperature TEnvironment(s)Determining an initial gear of a fan, wherein the gear of the fan comprises a high wind gear, a low wind gear and a wind stop gear, and the wind speeds of the high wind gear, the low wind gear and the wind stop gear are sequentially reduced;
periodic detection of the auxiliary temperature TAssistance ofWill TAssistance ofCompare with the setting value and according to the gear of the control adjustment fan of comparison result, specifically do: if TAssistance ofLess than or equal to the safe auxiliary temperature TbControlling the wind speed of the fan to rise by one gear; if Tb＜TAssistance ofAuxiliary temperature T for switching gear of fan less than or equal tocControlling the wind speed of the fan to keep the current gear; if TAssistance of＞TcAnd when the wind speed of the fan is controlled to be reduced by one gear.
As a further optimization, the auxiliary temperature TAssistance ofIn particular the degree of superheat T of the suction gasSuction superheatSafe auxiliary temperature TbIn particular to the safe air suction superheat degree and the auxiliary temperature T for switching the gear of the fancIn particular to a draught fan gear switching air suction superheat degree TWind speed switching superheat degree。
As a further optimization, the safe air suction superheat degree is specifically the air suction superheat degree T of the gear switching of the fanWind speed switching superheat degreeSubtracting the air suction superheat deviation delta T of fan gear switchingDegree of superheat。
As a further optimization, the fan gear switching environment temperature TaThe preset value of (2) is 28 ℃; and/or the fan gear switching auxiliary temperature TcThe preset value of (2) is 10 ℃.
As a further optimization, the auxiliary temperature TAssistance ofIn particular the exhaust gas temperature TExhaust of gasesSaid safety assistance temperature TbIn particular the safe exhaust temperature, the fan gear switching auxiliary temperature TcIn particular to the exhaust temperature for gear switching of the fan.
As a further optimization, the fan gear switching environment temperature TaThe preset value of (2) is 28 ℃; and/or the fan gear switching auxiliary temperature TcThe preset value of (A) is 105 ℃.
As a further optimization, after the gear of the fan is switched each time, the gear of the fan needs to be controlled to be kept for at least the minimum wind gear keeping time tWindshield maintenanceAnd then switching is carried out.
As a further optimization, when TEnvironment(s)Less than or equal to safe environment temperature T1When the wind speed is controlled to be always kept at the high wind level, the initial gear of the fan is the high wind level; when T is1＜TEnvironment(s)≤TaWhen the current gear is kept, the initial gear of the fan is the current gear; when T isEnvironment(s)＞TaAnd meanwhile, the initial gear of the fan is a low wind gear, and the highest gear of the fan is the low wind gear.
According to another aspect of the present invention, there is provided an apparatus, wherein the apparatus comprises:
a processor; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform the method of controlling a wind turbine described above.
According to another aspect of the present invention, there is provided a computer-readable storage medium, wherein the computer-readable storage medium stores one or more programs, which when executed by a processor, implement the control method of a fan described above.
In conclusion, the invention has the following beneficial effects:
1. the control method can automatically adjust the gear of the fan according to the auxiliary temperature, properly reduce the evaporation heat exchange amount, avoid overhigh exhaust temperature or high-pressure protection of the unit and ensure the reliable operation of the unit;
2. three gears are arranged, so that the large change of the air quantity of the unit is avoided, the direct shutdown of a fan in high-speed operation is avoided, and the stability and the reliability of the operation of the unit are ensured;
3. through the gear automatic adjustment of the control fan, the unit is ensured to select proper air quantity, and the unit is enabled to run with high heating capacity and high efficiency while the phenomenon that the exhaust temperature is too high or high-voltage protection is avoided.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Detailed Description
Exemplary embodiments of the present disclosure will be described in greater detail below, however, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The first embodiment is as follows:
the fan is divided into three gears according to the rotating speed: the high wind gear is used for controlling the rotating speed of the fan to be the rated rotating speed; a low wind gear, wherein the rotating speed of the fan is 50% of the rated rotating speed of the fan; and a wind stop gear, wherein the fan stops rotating under the gear. The control method of the fan comprises the following steps:
s1, detecting the ambient temperature TEnvironment(s)According to the ambient temperature TEnvironment(s)Determining an initial gear of a fan;
s2, periodically detecting the auxiliary temperature TAssistance ofWill TAssistance ofAnd comparing the set value with the set value and controlling and adjusting the gear of the fan according to the comparison result.
The relevant judgment conditions of the above steps S1 and S2 are specifically shown in the following table:
Figure GDA0002133354520000051
Figure GDA0002133354520000061
in steps S1 and S2, the ambient temperature TEnvironment(s)And degree of superheat T of suction gasSuction superheatDetecting in real time, and feeding back every 5 seconds; after the gear of the fan is switched every time, the gear of the fan needs to be controlled to be kept at least tWindshield maintenanceThen switching is performed, tWindshield maintenanceThe fan gears can be switched as long as the fan gear switching conditions are met, and the influence of the switching times is avoided.
In the above table and above paragraphs: t is1For safe ambient temperature, it is a set value, T in this example1Presetting the temperature to be 21 ℃; t isEnvironment(s)Is the detected ambient temperature; t isaThe temperature of the environment for switching the gear of the fan is a set value, T in the embodimentaPresetting the temperature to be 28 ℃; t isSuction superheatFor degree of superheat of suction, TSuction superheatNot suction temperature TAir suctionSaturation temperature T corresponding to suction pressureSaturation ofBy measuring the suction temperature TAir suctionAnd the temperature of an evaporator coil of the low-temperature air source heat pump hot water unit is used for replacing the saturation temperature T corresponding to the suction pressureSaturation ofThereby calculating the degree of superheat T of intake airSuction superheat；TWind speed switching superheat degreeThe suction superheat degree is a set value for switching the gear of the fan, and T is the set value in the embodimentWind speed switching superheat degreePresetting to 10 ℃; t iscThe auxiliary temperature for switching the gear of the fan is a set value, T in the embodimentcIn particular TWind speed switching superheat degree，TcPresetting to 10 ℃; delta TDegree of superheatThe deviation of the suction superheat for the gear switching of the fan is a set value, delta T in the embodimentDegree of superheatPresetting the temperature to be 5 ℃; t is tWindshield maintenanceA minimum holding time for the windshield, which is a set value, t in this embodimentWindshield maintenancePreset to 120 s. All the above set values can be modified at any time according to experience or requirements. In this embodiment, the auxiliary temperature TAssistance ofIn particular the degree of superheat T of the suction gasSuction superheatSafe auxiliary temperature TbIn particular a safe suction superheat, i.e. a safe auxiliary temperature Tb＝TWind speed switching superheat degree-ΔTDegree of superheatAuxiliary temperature T for switching gear of fancIn particular to a draught fan gear switching air suction superheat degree TWind speed switching superheat degree。
It is worth explaining that the evaporation heat exchange amount of the low-temperature air source heat pump hot water unit and the wind speed of the fan are in a linear relation, when the rotating speed of the fan is low, the evaporation heat exchange amount of the unit is low, and when the rotating speed of the fan is high, the evaporation heat exchange amount of the unit is high. In the control method of the present embodiment, the time T is setEnvironment(s)＞TaDuring the time, make the wind speed of fan can adjust the gear according to auxiliary temperature's difference, and the highest gear of control fan is low-wind gear, can avoid effectively under high ambient temperature operating mode, the high amount of wind of fan causes the evaporation heat transfer volume of unit great, and then prevents that exhaust temperature from appearing in the unit too high or high-pressure protection to guarantee the normal operating of unit. In the control method in this embodiment, the current T is setSuction superheat≤(TWind speed switching superheat degree-ΔTDegree of superheat) The reason and the effect of the wind speed rising to the first gear are as follows: when T isSuction superheatWhen the air-conditioning heat pump water heater is low, more allowance is available for the evaporation heat exchange amount of the low-temperature air source heat pump water heater unit, at the moment, if the fan only keeps a gear, such as a low wind gear, the evaporation heat exchange amount of the unit is low, the evaporation heat exchange amount of the unit cannot be fully exerted, the energy efficiency of the unit is low, and even liquid return of the compressor is possible. In the control method of the present embodiment, when (T) is setWind speed switching superheat degree-ΔTDegree of superheat)＜TSuction superheat≤TcDuring the time, the fan keeps the gear, can avoid because the increase of fan amount of wind leads to the evaporation heat transfer volume great, prevents that exhaust temperature is too high or high-pressure protection from appearing in the unit, ensures the normal operating of unit. When T isSuction superheat＞TcWhen the wind speed is reduced by one gear, for example, the wind speed of the fan is firstly reduced from a high wind gear to a low wind gear and then reduced from the low wind gear to a stop gear, a buffer transition process also exists, but the wind speed of the fan is not directly stopped from a high-speed running state, so that the influence on the running condition of the unit is reduced, and the liquid return of a compressor of the unit is avoided. In the existing fan control method, when the ambient temperature is 21-28 ℃, the evaporation heat exchange amount is large due to large heat exchange temperature difference of an evaporator of the unit, so that the compressor of the unit is shut down due to overhigh exhaust temperature or high-pressure protection. In the control method of the embodiment, when the ambient temperature is 21-28 ℃, the air speed of the fan is controlled to be adjusted according to the suction superheat degree, and the three gears are arranged to avoid the large air volume change of the unit, so that the large evaporation heat exchange amount caused by the large heat exchange temperature difference of the evaporator of the unit can be effectively avoided, and the normal operation of the unit is ensured. Keep switching again after certain time after switching the gear at every turn, avoid switching the life who influences the fan too fast, also can in time adjust when the error appears simultaneously.
The control method is specifically exemplified as follows:
detecting TEnvironment(s)＝25℃：
1. Actual measurement and calculation of TSuction superheatAt 4 deg.C (T)Wind speed switching superheat degree-ΔTDegree of superheat) When the temperature is 10-5 ℃ or 5 ℃, the fan is raised to the first gear, and if the wind gear is high, the fan is kept unchanged;
2. actual measurement and calculation of TSuction superheatAt 6 deg.C (T)Wind speed switching superheat degree-ΔTDegree of superheat) When the temperature is 10-5 ℃ to 5 ℃, the fan keeps the gear;
3. actual measurement and calculation of TSuction superheat12 ℃ at this time TWind speed switching superheat degreeWhen the temperature is 10 ℃, the fan is lowered by one gear, and if the temperature is a stop gear, the fan is kept unchanged; if the fan is reduced by one gear to keep the fan running for at least tWindshield maintenanceAfter (120s), still TSuction superheat＞TcIf so, lowering the fan by one gear according to the logic; if the fan is reduced by one gear to keep the fan running for at least tWindshield maintenanceAfter (120s), TSuction superheat≤(TWind speed switching superheat degree-ΔTDegree of superheat) And according to the logic, the fan is lifted by one gear.
The control method in the embodiment has the following advantages:
1. the control method in the embodiment can automatically adjust the gear of the fan according to the suction superheat degree, thereby properly reducing the evaporation heat exchange amount, avoiding overhigh exhaust temperature or high-pressure protection of the unit and ensuring the reliable operation of the unit;
2. three gears are arranged, so that the large change of the air quantity of the unit is avoided, the direct shutdown of a fan in high-speed operation is avoided, and the stability and the reliability of the operation of the unit are ensured;
3. through the gear automatic adjustment of the control fan, the unit is ensured to select proper air quantity, and the unit is enabled to run with high heating capacity and high efficiency while the phenomenon that the exhaust temperature is too high or high-voltage protection is avoided.
Example two:
the fan is divided into three gears according to the rotating speed: a high wind gear, under which the fan is at its rated speed; a low wind gear, wherein the rotating speed of the fan is 50% of the rated rotating speed of the fan; and a wind stop gear, wherein the fan stops rotating under the gear. The control method of the fan comprises the following steps:
s1, detecting the ambient temperature TEnvironment(s)According to the ambient temperature TEnvironment(s)Determining an initial gear of a fan;
s2, periodically detecting the auxiliary temperature TAssistance ofWill TAssistance ofAnd comparing the set value with the set value and controlling and adjusting the gear of the fan according to the comparison result.
The relevant judgment conditions of the above steps S1 and S2 are specifically shown in the following table:
Figure GDA0002133354520000091
Figure GDA0002133354520000101
in steps S1 and S2, the ambient temperature TEnvironment(s)And exhaust temperature TExhaust of gasesDetecting in real time, and feeding back every 5 seconds; after the gear of the fan is switched every time, the gear of the fan needs to be controlled to be kept at least tWindshield maintenanceThen switching is performed, tWindshield maintenanceThe gear is switched as long as the fan gear switching condition is met, and the influence of the switching times is avoided.
In the above table and above paragraphs: t is1For safe ambient temperature, it is a set value, T in this example1Presetting the temperature to be 21 ℃; t isEnvironment(s)Is the detected ambient temperature; t isaThe temperature of the environment for switching the gear of the fan is a set value, T in the embodimentaPresetting 28 ℃; t isExhaust of gasesIs the measured exhaust temperature; t isbFor the safety-assisting temperature, which is a set value, the safety-assisting temperature T in this embodimentbIn particular the safety exhaust temperature, T in this examplebPresetting the temperature to be 85 ℃; t iscThe auxiliary temperature for the gear shifting of the fan is a set value, and the auxiliary temperature T for the gear shifting of the fan is set in the embodimentcParticularly, the exhaust temperature is switched in the gear of the fan, T in this embodimentcPresetting at 105 ℃; t is tWindshield maintenanceA minimum holding time for the windshield, which is a set value, t in this embodimentWindshield maintenancePreset to 120 s. All the above set values can be modified at any time according to experience or requirements. In this embodiment, the auxiliary temperature TAssistance ofIn particular the exhaust temperature TExhaust of gasesSafe auxiliary temperature TbParticularly safe exhaust temperature and auxiliary temperature T for switching gear of fancIn particular to the exhaust temperature for the gear switching of the fan.
It is worth explaining that the evaporation heat exchange amount of the low-temperature air source heat pump hot water unit and the wind speed of the fan are in a linear relation, when the rotating speed of the fan is low, the evaporation heat exchange amount of the unit is low, and when the rotating speed of the fan is high, the evaporation heat exchange amount of the unit is high. In the control method of the present embodiment, the time T is setEnvironment(s)＞TaDuring the time, make the wind speed of fan can adjust the gear according to auxiliary temperature's difference, and the highest gear of control fan is low-wind gear, can avoid effectively under high ambient temperature operating mode, the high amount of wind of fan causes the evaporation heat transfer volume of unit great, and then prevents that exhaust temperature from appearing in the unit too high or high-pressure protection to guarantee the normal operating of unit. In the control method in this embodiment, the current T is setExhaust of gases≤TbThe reason and the effect of the wind speed rising to the first gear are as follows: when T isExhaust of gasesWhen the air speed of the fan is raised to one gear, for example, the fan is changed into a high wind gear, the evaporation heat exchange amount of the unit can be greatly increased, the surplus of the evaporation heat exchange amount of the unit is fully utilized, and the air speed of the unit is effectively increasedThe evaporation heat transfer volume and the efficiency of group to avoid the compressor to return liquid, simultaneously because the evaporation heat transfer volume of unit has the surplus before, the increase wind speed only can cause the surplus to reduce, nevertheless can not influence the normal operating of unit. In the control method of the present embodiment, the time T is setb＜TExhaust of gases≤TcDuring the time, the fan keeps the gear, can avoid because the increase of fan amount of wind leads to the evaporation heat transfer volume great, prevents that exhaust temperature is too high or high-pressure protection from appearing in the unit, ensures the normal operating of unit. When T isExhaust of gases＞TcWhen the wind speed is reduced by one gear, for example, the wind speed of the fan is firstly reduced from a high wind gear to a low wind gear and then reduced from the low wind gear to a stop gear, a buffer transition process also exists, but the wind speed of the fan is not directly stopped from a high-speed running state, so that the influence on the running condition of the unit is reduced, and the liquid return of a compressor of the unit is avoided. In the existing fan control method, when the ambient temperature is 21-28 ℃, the evaporation heat exchange amount is large due to large heat exchange temperature difference of an evaporator of the unit, so that the compressor of the unit is shut down due to overhigh exhaust temperature or high-pressure protection. In the control method of the embodiment, when the ambient temperature is 21-28 ℃, the air speed of the fan is controlled to be adjusted according to the exhaust temperature, and the three gears are arranged to avoid the large air volume change of the unit, so that the large evaporation heat exchange amount caused by the large heat exchange temperature difference of the evaporator of the unit can be effectively avoided, and the normal operation of the unit is ensured. Keep switching again after certain time after switching the gear at every turn, avoid switching the life who influences the fan too fast, also can in time adjust when the error appears simultaneously.
The control method in the embodiment has the following advantages:
1. the control method in the embodiment can automatically adjust the gear of the fan according to the exhaust temperature, thereby properly reducing the evaporation heat exchange amount, avoiding overhigh exhaust temperature or high-pressure protection of the unit and ensuring the reliable operation of the unit;
2. three gears are arranged, so that the large change of the air quantity of the unit is avoided, the direct shutdown of a fan in high-speed operation is avoided, and the stability and the reliability of the operation of the unit are ensured;
3. through the gear automatic adjustment of the control fan, the unit is ensured to select proper air quantity, and the unit is enabled to run with high heating capacity and high efficiency while the phenomenon that the exhaust temperature is too high or high-voltage protection is avoided.
The above specific embodiments are merely illustrative of the present invention, and are not restrictive, and those skilled in the art can modify the above embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims of the present invention.
For the two embodiments described above, it should be noted that:
the algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose devices may be used with the teachings herein. The required structure for constructing such a device will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims and abstract) and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims and abstract) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It will be appreciated by those skilled in the art that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of the apparatus for detecting a wearing state of an electronic device according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
Such as a device according to one embodiment of the present invention. The apparatus conventionally comprises a processor and a memory arranged to store computer-executable instructions (program code). The memory may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory has a storage space for storing program code for performing the present embodiment and any method steps in the embodiments. For example, the memory space for the program code may comprise respective program codes for implementing the respective steps in the above method, respectively. The program code can be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. Such a computer program product is typically a computer-readable storage medium. The computer readable storage medium may have memory segments, memory spaces, etc. arranged similarly to the memory in the device. The program code may be compressed, for example, in a suitable form. In general, the memory unit stores program code for performing the steps of the method according to the invention, i.e. program code readable for instance by a processor, which when run by an electronic device causes the device to perform the steps of the method described above.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Claims (7)

1. A control method of a fan is characterized by comprising the following steps:
detecting ambient temperature TEnvironment(s)According to the ambient temperature TEnvironment(s)Determining an initial gear of a fan, wherein the gear of the fan comprises a high wind gear, a low wind gear and a wind stop gear, and the wind speeds of the high wind gear, the low wind gear and the wind stop gear are sequentially reduced;
periodic detection of the auxiliary temperature TAssistance ofWill TAssistance ofCompare with the setting value and according to the gear of the control adjustment fan of comparison result, specifically do: if TAssistance ofLess than or equal to the safe auxiliary temperature TbControlling the wind speed of the fan to rise by one gear; if Tb＜TAssistance ofAuxiliary temperature T for switching gear of fan less than or equal tocControlling the wind speed of the fan to keep the current gear; if TAssistance of＞TcAnd then controlling the wind speed of the fan to reduce by one gear, and assisting the temperature TAssistance ofSafe auxiliary temperature TbAuxiliary temperature T for switching gear of fancThere are two different ways of combining the components,
first, the auxiliary temperature TAssistance ofFor suction superheat degree TSuction superheatSaid safety assistance temperature TbIs TWind speed switching superheat degreeSubtracting the set air suction superheat deviation delta T of the gear switching of the fanDegree of superheatAnd the auxiliary temperature T is switched to the gear of the fancSwitching suction superheat T for set fan gearWind speed switching superheat degreeSaid T isSuction superheatIs the suction temperature TAir suctionSaturated temperature T corresponding to the subtracted suction pressureSaturation ofSaid suction temperature TAir suctionAs a measured value, the saturation temperature TSaturation ofEvaporator coil for low-temperature air source heat pump water heater unitThe temperature of (a);
second, the auxiliary temperature TAssistance ofIs the exhaust temperature TExhaust of gasesSaid safety assistance temperature TbThe auxiliary temperature T for switching the gear of the fan is set to be safe exhaust temperaturecAnd switching the exhaust temperature for the set fan gear.
2. The control method of the fan according to claim 1, characterized in that: also includes useful and ambient temperature TEnvironment(s)Fan gear switching environment temperature T for jointly determining initial gear of fanaAnd the fan gear switching ambient temperature TaThe preset value of (2) is 28 ℃; and/or the fan gear switching air suction superheat degree TWind speed switching superheat degreeThe preset value of (2) is 10 ℃.
3. The control method of the fan according to claim 1, characterized in that: also includes useful and ambient temperature TEnvironment(s)Fan gear switching environment temperature T for jointly determining initial gear of fanaAnd the fan gear switching ambient temperature TaThe preset value of (2) is 28 ℃; and/or the preset value of the exhaust temperature for gear switching of the fan is 105 ℃.
4. The control method of the fan according to claim 1, characterized in that: after the gear of the fan is switched every time, the gear of the fan needs to be controlled to keep at least the minimum wind gear keeping time tWindshield maintenanceAnd then switching is carried out.
5. The control method of the fan according to claim 1, characterized in that: when T isEnvironment(s)Less than or equal to safe environment temperature T1When the wind speed is controlled to be always kept at the high wind level, the initial gear of the fan is the high wind level; when T is1＜TEnvironment(s)≤TaWhen the current gear is kept, the initial gear of the fan is the current gear; when T isEnvironment(s)＞TaAnd meanwhile, the initial gear of the fan is a low wind gear, and the highest gear of the fan is the low wind gear.
6. An apparatus, characterized by: the apparatus comprises:
a processor; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the processor to perform a method of controlling a wind turbine according to any of claims 1-5.
7. A computer-readable storage medium characterized by: the computer readable storage medium stores one or more programs which, when executed by a processor, implement a control method of a wind turbine according to any of claims 1-5.
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