CN115183509A - Method, device, equipment and medium for controlling rotating speed of variable frequency compressor - Google Patents
Method, device, equipment and medium for controlling rotating speed of variable frequency compressor Download PDFInfo
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- CN115183509A CN115183509A CN202210840225.2A CN202210840225A CN115183509A CN 115183509 A CN115183509 A CN 115183509A CN 202210840225 A CN202210840225 A CN 202210840225A CN 115183509 A CN115183509 A CN 115183509A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to a method, a device, equipment and a medium for controlling the rotating speed of a variable frequency compressor, wherein the method comprises the following steps: acquiring an operation mode of an intelligent controller of the variable frequency compressor; if the operation mode is an expert mode, acquiring the position of the variable frequency compressor, the current environment humidity and the current environment temperature; acquiring a corresponding expert experience tachometer according to the position and the current environment humidity; searching a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature in an expert experience rotating speed table corresponding to the position and the current environment humidity; and controlling the inverter compressor to operate at the searched first maximum rotating speed, and controlling the inverter compressor to operate at the searched first target rotating speed when the current ambient temperature of the inverter compressor reaches a preset target temperature. The invention considers the regional environmental factors and realizes the personalized rotating speed control.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a method, a device, equipment and a medium for controlling the rotating speed of a variable frequency compressor.
Background
For a refrigeration device adopting a fixed-frequency compressor, the start and stop of the compressor are controlled by a temperature controller. However, with the improvement of living standard, people put forward higher and higher requirements on the performance of the compressor, such as fast refrigeration, low noise, and the like, so the inverter compressor is more and more favored by people. The inverter compressor is a compressor which can continuously change output energy by continuously adjusting the rotating speed of the compressor within a certain range through a control mode or means relative to the compressor with constant rotating speed.
The inverter compressor is widely applied to the fields of refrigerators, freezers, show cases for displaying food, commercial refrigerators, air conditioners and the like due to the advantages of high efficiency, low noise, miniaturization and the like, and the inverter technology and the method for controlling the rotating speed of the inverter compressor are directly related to the efficiency and the overall performance of the compressor. Therefore, the rotating speed control process of the variable frequency compressor is very critical.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the invention provides a method, a device, equipment and a medium for controlling the rotating speed of an inverter compressor.
In a first aspect, an embodiment of the present invention provides a method for controlling a rotation speed of an inverter compressor, including:
acquiring an operation mode of an intelligent controller of the variable frequency compressor;
if the operation mode is an expert mode, acquiring the position of the variable frequency compressor, the current environment humidity and the current environment temperature;
acquiring a corresponding expert experience tachometer according to the position and the current environment humidity; the different positions and the different environmental humidities correspond to different expert experience rotating speed tables, and each expert experience rotating speed table comprises a first maximum rotating speed and a first target rotating speed corresponding to different temperatures;
searching a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature in an expert experience rotating speed table corresponding to the position and the current environment humidity;
and controlling the inverter compressor to operate at the searched first maximum rotating speed, and controlling the inverter compressor to operate at the searched first target rotating speed when the current ambient temperature of the inverter compressor reaches a preset target temperature.
In a second aspect, an embodiment of the present invention provides a rotation speed control apparatus for an inverter compressor, including:
the first acquisition module is used for acquiring the operation mode of the intelligent controller of the variable frequency compressor;
the second acquisition module is used for acquiring the position, the current environment humidity and the current environment temperature of the variable frequency compressor if the operation mode is an expert mode;
the third acquisition module is used for acquiring a corresponding expert experience tachometer according to the position and the current environment humidity; the different positions and the different environmental humidities correspond to different expert experience rotating speed tables, and each expert experience rotating speed table comprises a first maximum rotating speed and a first target rotating speed corresponding to different temperatures;
the first searching module is used for searching a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature in an expert experience rotating speed table corresponding to the position and the current environment humidity;
and the first control module is used for controlling the inverter compressor to operate at the searched first maximum rotating speed and controlling the inverter compressor to operate at the searched first target rotating speed when the current ambient temperature of the inverter compressor reaches a preset target temperature.
In a third aspect, an embodiment of the present invention provides a computing device, including: at least one memory and at least one processor; the at least one memory to store a machine readable program; the at least one processor is configured to invoke the machine-readable program to perform the method provided by the first aspect.
In a fourth aspect, the present invention provides a computer-readable medium, on which computer instructions are stored, and when executed by a processor, the computer instructions cause the processor to execute the method provided in the first aspect.
According to the rotating speed control method, the rotating speed control device, the rotating speed control equipment and the rotating speed control medium of the variable frequency compressor, under an expert mode, a corresponding expert experience rotating speed table is determined according to the position of the variable frequency compressor and the current environment humidity, a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature are searched in the expert experience rotating speed table, then the variable frequency compressor is controlled to operate at the first maximum rotating speed, and when the environment temperature reaches a preset target temperature, the variable frequency compressor is controlled to operate at the first target rotating speed. Therefore, in the temperature adjusting stage, the operation is carried out at the first maximum rotating speed, so that the environment temperature can be quickly adjusted from the initial temperature to the preset target temperature. When the ambient temperature reaches the preset target temperature, the variable frequency compressor is controlled to operate at the first target rotating speed, so that the variable frequency compressor can stably operate. In the process, different positions and humidity correspond to different expert experience tachometers, and it can be seen that the consideration factors of the first maximum rotating speed and the first target rotating speed include position, humidity and temperature, that is, regional environment factors are considered, so that the rotating speed control of the variable frequency compressor is more consistent with an actual use scene, and personalized rotating speed control is realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
FIG. 1 is a flow chart illustrating a method for controlling the rotational speed of an expert mode down conversion compressor in accordance with one embodiment of the present invention;
FIG. 2 is a flow chart illustrating a method for controlling the rotational speed of the intelligent mode down conversion compressor according to an embodiment of the present invention;
FIG. 3 is a system framework diagram of one embodiment of the present invention;
fig. 4 is a block diagram illustrating a rotational speed control apparatus of an inverter compressor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a rotating speed control method of a variable frequency compressor.
It can be understood that the control formula of the inverter compressor is n =60f (1-s)/p, where n represents the rotation speed of the compressor, f represents the power supply frequency of the compressor, s represents the slip ratio, and p represents the number of pole pairs of the motor. From this equation it can be seen that the principle of frequency conversion is to vary the supply frequency f of the compressor. In the case where p and s are constant, the rotational speed of the compressor varies with the frequency.
Under certain working conditions, the refrigerant mass flow and the compressor rotation speed are in a function relationship in direct proportion, and the function relationship is as follows: m = f (n), where f is a function of the refrigerant mass flow rate and the compressor speed, and n is the compressor speed. Therefore, the adjustment of the refrigerating capacity of the air conditioner can be realized by adjusting the rotating speed of the compressor, which is the principle of the frequency conversion energy adjustment of the direct current or alternating current frequency conversion air conditioner.
Referring to fig. 1, the method provided in the embodiment of the present invention includes the following steps S110 to S150:
s110, acquiring an operation mode of an intelligent controller of the variable frequency compressor;
the embodiment of the invention provides two operation modes: expert mode and intelligent mode.
The expert mode is a mode in which different geographical locations (e.g., cities) and environmental temperatures are associated with different tachometers (hereinafter, referred to as expert experience tachometers) according to expert experience, and different temperatures, maximum rotational speeds and target rotational speeds are associated with one another in the tachometer according to expert experience to obtain expert experience data, and rotational speed control is performed according to the expert experience data, that is, the expert mode. For differentiation, the maximum rotation speed in the expert mode is the first maximum rotation speed, and the target rotation speed is the first target rotation speed.
The intelligent mode is that data modeling is utilized to obtain an intelligent model, input information of the intelligent model is position and ambient temperature, and output information of the intelligent model is maximum rotating speed and target rotating speed. And then determining the maximum rotating speed and the target rotating speed at different positions and environmental temperatures by using the intelligent model, and controlling the rotating speed by using the maximum rotating speed and the target rotating speed, namely the intelligent mode. For differentiation, the maximum rotation speed in the smart mode is the second maximum rotation speed, and the target rotation speed is the second target rotation speed.
The method provided by the embodiment of the invention can be executed by a cloud platform.
S120, if the operation mode is the expert mode, acquiring the position of the variable frequency compressor, the current environment humidity and the current environment temperature;
that is, if the current operation mode of the intelligent controller is the expert mode, the location of the inverter compressor, for example, a city, is acquired. Meanwhile, the ambient temperature of the inverter compressor is obtained, and temperature information can be obtained from a driving plate of the inverter compressor. Meanwhile, the environment humidity information of the frequency conversion compressor is obtained, and the humidity information can also be obtained from a driving plate of the frequency conversion compressor. The drive plate of the frequency conversion compressor can be connected with corresponding temperature and humidity sensors, and temperature and humidity information is obtained from the temperature and humidity sensors.
S130, acquiring a corresponding expert experience tachometer according to the position and the current environment humidity; the different positions and the different environmental humidities correspond to different expert experience rotating speed tables, and each expert experience rotating speed table comprises a first maximum rotating speed and a first target rotating speed corresponding to different temperatures;
i.e. different geographical locations and different ambient humidity, using different expert experience tachometers. Therefore, the corresponding expert experience tachometer is determined according to the position of the inverter compressor and the current ambient temperature.
S140, searching a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature in an expert experience rotating speed table corresponding to the position and the current environment humidity;
that is, in the expert experience tachometer determined in S130, the first maximum rotational speed and the first target rotational speed corresponding to the current ambient temperature are searched.
S150, controlling the inverter compressor to operate at the searched first maximum rotating speed, and controlling the inverter compressor to operate at the searched first target rotating speed when the current environment temperature of the inverter compressor reaches a preset target temperature.
The method comprises the steps of firstly controlling the inverter compressor to operate at a first maximum rotating speed, wherein the temperature of the environment where the compressor is located is changed all the time in the operation process, and when the temperature reaches a preset target temperature, controlling the inverter compressor to operate at the first target rotating speed. Wherein the preset target temperature is a temperature set by a user. For example, the user sets the target temperature to 22 °.
It will be appreciated that the parameters in the intelligent controller need to be initialized when the method provided by the embodiments of the present invention is performed for the first time. The parameters stored in the intelligent controller may include: the first time length, the expert experience tachometers corresponding to different positions and environmental temperatures, the intelligent models corresponding to different positions and temperatures, the second time length, the third time length and other data. The default operation mode in the intelligent controller is an expert mode, and of course, the intelligent device may receive a setting from a user, for example, if the user switches the operation mode to the intelligent mode, the operation mode stored in the intelligent controller is the intelligent mode.
In one example, the operation mode stored in the intelligent controller is an expert mode, and the first time period is 5min. The rotation speed control process may include the steps of:
first, the location, the current ambient humidity, and the current ambient temperature are obtained from the intelligent controller, and the intelligent controller may specifically obtain these information from the driving plate of the inverter compressor. Wherein, the position is a Chengdu, the current environment humidity is 37% of relative humidity ratio, and the current environment temperature is 29 ℃.
Then, according to the position and the current environment humidity, determining a corresponding expert experience tachometer, and searching a maximum rotating speed and a target rotating speed corresponding to the current environment temperature from the expert experience tachometer, namely a first maximum rotating speed and a first target rotating speed;
then, sending a control instruction to the drive plate through the intelligent controller so that the variable frequency compressor runs at a first maximum rotating speed;
and finally, acquiring the current environment temperature once every 5min, judging whether the current environment temperature is reduced to 22 ℃ which is a preset target temperature, and finding that the current environment temperature is higher than the preset target temperature in the first 5min through judgment, so that the operation of the variable frequency compressor is still controlled according to the first maximum rotating speed. And when the second time is 5min, controlling the variable frequency compressor to operate at the target rotating speed when the current ambient temperature is equal to the preset target temperature, so that the variable frequency compressor stably operates at the first target rotating speed at the preset target temperature until the compressor rotating speed control process is finished.
In an embodiment, in S150, when the current ambient temperature of the inverter compressor reaches the preset target temperature, controlling the inverter compressor to operate at the searched first target rotation speed may specifically include the following steps:
s151, acquiring the current ambient temperature of the inverter compressor every other first time interval, and judging whether the current ambient temperature reaches the preset target temperature;
s152, if yes, controlling the frequency converter compressor to operate at the searched first target rotating speed;
s153, otherwise, controlling the inverter compressor to operate at the found first maximum rotating speed, and returning to the step of obtaining the current ambient temperature of the inverter compressor at intervals of the first time.
The first duration is a fixed value, and the current environment temperature is detected once every other period of time, so that whether the current environment temperature reaches the preset target temperature or not is judged. And if the preset target temperature is reached, controlling the variable frequency compressor to operate at a first target rotating speed. If the preset target temperature is not reached, the operation is still performed at the first maximum rotation speed, and then returns to S151. Through multiple cycles, when the ambient temperature is the preset target temperature, the variable frequency compressor is controlled to operate at the first target rotating speed, so that the variable frequency compressor can stably operate at the temperature required by a user.
It can be understood that in the expert mode, a corresponding expert experience rotating speed table is determined according to the position of the variable frequency compressor and the current environment humidity, a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature are searched in the expert experience rotating speed table, then the variable frequency compressor is controlled to operate at the first maximum rotating speed, and when the environment temperature reaches a preset target temperature, the variable frequency compressor is controlled to operate at the first target rotating speed. Therefore, in the temperature adjusting stage, the operation is carried out at the first maximum rotating speed, so that the environment temperature can be quickly adjusted from the initial temperature to the preset target temperature. When the ambient temperature reaches the preset target temperature, the variable frequency compressor is controlled to operate at the first target rotating speed, so that the variable frequency compressor can operate stably. In the process, different positions and humidity correspond to different expert experience tachometers, and it can be seen that the consideration factors of the first maximum rotating speed and the first target rotating speed include position, humidity and temperature, that is, regional environment factors are considered, so that the rotating speed control of the variable frequency compressor is more consistent with an actual use scene, and personalized rotating speed control is realized.
The above control flow is a control process in the expert mode, and the following provides a control flow in the smart mode. Referring to fig. 2, the method provided in the embodiment of the present invention may further include the following steps S160 to S190:
s160, if the operation mode is the intelligent mode, acquiring the position and the current environment temperature of the variable frequency compressor, and determining a corresponding intelligent model and a second time length according to the position and the current environment temperature; the intelligent model is used for outputting a corresponding second maximum rotating speed and a corresponding second target rotating speed according to the position of the variable frequency compressor and the current environment temperature;
that is, the input information of the intelligent model is the position information and the environment temperature information of the inverter compressor, and the output information is the corresponding maximum rotating speed and the target rotating speed. For the purpose of distinguishing from the first maximum rotation speed and the first target rotation speed of the expert mode, they are referred to herein as a second maximum rotation speed and a second target rotation speed.
Likewise, different geographical locations and different ambient temperatures may correspond to different second time periods, and reference is made hereinafter to a third time period, and different geographical locations and different ambient temperatures may also correspond to different third time periods. The third time period is much shorter than the second time period, e.g., the second time period is 4min and the third time period is 30s.
After determining an intelligent model in S160, a second maximum rotational speed and a second target rotational speed at different temperatures may be calculated using the intelligent model in a subsequent step.
S170, inputting the current environment temperature into the intelligent model to obtain a corresponding second maximum rotating speed, and controlling the variable frequency compressor to operate at the second maximum rotating speed;
here, the current ambient temperature and the position of the current ambient temperature are input into the intelligent model, so that a corresponding second maximum rotation speed can be obtained, and then the inverter compressor can be controlled to operate at the second maximum rotation speed.
S180, when the time length of the inverter compressor running at the second maximum rotating speed reaches the second time length, acquiring the current environment temperature of the inverter compressor, and judging whether the current environment temperature reaches a preset target temperature;
that is, after the inverter compressor is operated at the second maximum rotation speed determined in S170 for the second period of time, the current ambient temperature is detected, and it is determined whether the current ambient temperature reaches the preset target temperature.
And S190, if the current environment temperature reaches the preset target temperature, inputting the preset target temperature into the intelligent model to obtain a corresponding second target rotating speed, and controlling the variable frequency compressor to operate at the second target rotating speed.
That is, if the current ambient temperature reaches the preset target temperature, the preset target temperature and the position where the preset target temperature is located are input into the intelligent model determined in S160, so that a corresponding second target rotational speed can be obtained, and then the inverter compressor can be controlled to operate at the second target rotational speed, so that the inverter compressor can stably operate at the appropriate second target rotational speed when the current ambient temperature reaches the target temperature required by the user.
Further, in S160, determining a corresponding intelligent model and a second time duration according to the location and the current ambient temperature, the method may further include: determining a corresponding third time length according to the position and the current environment temperature;
that is, the corresponding intelligent model, the second time period, and the third time period are determined according to the location and the current ambient temperature in S160.
Correspondingly, the method provided by the embodiment of the invention can further comprise the following steps: and if the current environment temperature does not reach the preset target temperature, performing temperature control. That is, after the inverter compressor operates at the second maximum rotation speed determined in S170 for the second period of time, the current ambient temperature is detected, and it is found through judgment that the current ambient temperature does not preset the target temperature, at this time, temperature control is required. The specific process of temperature control may include the following steps S200 to S230:
s200, inputting the current environment temperature of the variable frequency compressor into the intelligent model to obtain a corresponding second maximum rotating speed, and controlling the variable frequency compressor to operate at the second maximum rotating speed;
namely, the current environment temperature and the position are input into the intelligent model, so that a second maximum rotating speed and a second target rotating speed can be obtained, wherein only the second maximum rotating speed is adopted, and then the variable frequency compressor is controlled to operate at the second maximum rotating speed.
S210, after the time length for controlling the variable frequency compressor to operate at the second maximum rotating speed reaches the third time length, acquiring the current environment temperature of the variable frequency compressor, and judging whether the current environment temperature reaches the preset target temperature;
that is, in the temperature control process of the present round, if the inverter compressor operates at the second maximum rotation speed for the third duration, the current ambient temperature is detected, and it is determined whether the current ambient temperature reaches the preset target temperature.
S220, if so, ending the temperature control process, inputting the preset target temperature into the intelligent model to obtain a corresponding second target rotating speed, and controlling the variable frequency compressor to operate at the second target rotating speed;
namely, if the current ambient temperature reaches the preset target temperature, inputting the preset target temperature and the position of the preset target temperature into the intelligent model to obtain a second maximum rotating speed and a second target rotating speed, wherein only the second target rotating speed is adopted, and then controlling the variable frequency compressor to operate at the second target rotating speed, so that the variable frequency compressor stably operates at the second target rotating speed at the preset target temperature.
And S230, otherwise, returning to the step of inputting the current environment temperature of the variable-frequency compressor into the intelligent model to obtain a corresponding second maximum rotating speed, and controlling the variable-frequency compressor to operate at the second maximum rotating speed.
That is, if the current ambient temperature at this time has not yet reached the target preset temperature, it returns to the step S200 to execute the next round of the temperature control process.
In an embodiment, on the basis of determining the corresponding intelligent model, the second time period and the third time period according to the location and the current ambient temperature in S160, the method provided by the embodiment of the present invention may further include the following step S240:
s240, after the inverter compressor is controlled to operate at the second target rotating speed, adjusting the operating rotating speed of the inverter compressor every third time, wherein the rotating speed adjusting process comprises the following steps: and acquiring the current environment temperature of the variable frequency compressor, inputting the current environment temperature into the intelligent model to obtain a corresponding second target rotating speed, and controlling the variable frequency compressor to operate at the second target rotating speed.
It can be understood that after the inverter compressor is operated at the second target rotation speed, the ambient temperature of the inverter compressor is changed along with the extension of the operation time, rather than being maintained at the preset target temperature all the time. And because the environment temperature changes, the second target rotating speed corresponding to the environment temperature also changes, so that after the variable frequency compressor runs at the second target rotating speed at the preset target temperature, the rotating speed is adjusted every third time. Each rotation speed adjustment comprises the following steps: and detecting the current environment temperature, inputting the current environment temperature and the position into the intelligent model to obtain a second maximum rotating speed and a second target rotating speed, wherein only the second target rotating speed is adopted, and then the variable frequency compressor is controlled to operate at the second target rotating speed, so that the operating rotating speed of the variable frequency compressor is always matched with the environment temperature.
In one embodiment, the method provided in the embodiment of the present invention may further include:
determining the time length for adjusting the environment temperature of the variable frequency compressor from the initial temperature to the preset target temperature, and sending the time length to a cloud end so that the cloud end can adjust the configuration parameters in the intelligent mode according to the time length.
That is to say, record the duration of the ambient temperature of inverter compressor from the initial temperature that begins to preset target temperature, this duration also can be called the adjustment duration, send this duration to the high in the clouds, the high in the clouds just can adjust parameter, second duration, third duration in the intelligent model like this.
In an example, if the operation mode acquired from the intelligent controller is the intelligent mode, the specific rotation speed control process may include the following steps:
first, relevant information is acquired, for example, the preset target temperature is 22 degrees celsius, the current ambient temperature is 29 degrees celsius, and the position is a success.
Then, an intelligent model, a second duration and a third duration, which all correspond to 29 degrees centigrade, are selected, the second duration being 4min and the third duration being 30s. The second duration may be referred to as a reference duration and the third duration may be referred to as an accuracy duration.
Then, inputting the current environment temperature and position into the intelligent model to obtain a second maximum rotating speed and a second target rotating speed; controlling the variable frequency compressor to operate at a second maximum rotating speed; and when the operation time reaches the second time for 4min, detecting the current environment temperature, and judging whether the current environment temperature is reduced to 22 ℃. The judgment shows that the current environment temperature is higher than 22 ℃, so the environment temperature is detected every 30s, and whether the detected environment temperature reaches 22 ℃ is judged. At the 4 th 30s, the ambient temperature reached 22 degrees celsius. And when the temperature does not reach 22 ℃, inputting the detected new environment temperature into the intelligent model to obtain a new second maximum rotating speed, and controlling the operation of the variable frequency compressor according to the new second maximum rotating speed. It can be seen that the second maximum rotational speed is adapted to the ambient temperature before the preset target temperature is reached, so that the ambient temperature can reach the preset target temperature as soon as possible.
Finally, after the ambient temperature reaches 22 ℃, inputting the 22 ℃ into the intelligent model to obtain a second target rotating speed, and controlling the variable frequency compressor to operate at the second target rotating speed; and then detecting the ambient temperature once every 30s, inputting the newly detected ambient temperature into the intelligent model to obtain a new second target rotating speed, and controlling the variable frequency compressor to operate at the new second target rotating speed until the rotating speed control process of the variable frequency compressor is finished.
Three durations are involved in the control flow in the smart mode: the time duration adjusting method comprises a second time duration, a third time duration and an adjusting time duration, wherein the second time duration can be called a reference time duration, and the third time duration can be called an accuracy time duration. A second maximum speed and a second target speed are also involved. The digital control of the rotating speed of the variable-frequency compressor is realized by combining the parameters with the rotating speed control of the variable-frequency compressor.
The reference time length is embodied by the time length of the frequency conversion compressor running in a high-frequency and high-power state, the adjustment time length is embodied by the time length of the frequency conversion compressor adjusted to a target rotating speed from the high-frequency and high-power state, and the precision time length is embodied by: and judging the time interval whether the ambient temperature of the variable frequency compressor reaches the preset target temperature in the temperature control process, and detecting the ambient temperature and the time interval for adjusting the second target rotating speed in the process of operating according to the second target rotating speed.
Wherein the second maximum rotational speed has the effect of: in the temperature control stage, the temperature control can be quickly realized by operating at the corresponding maximum rotating speed. The second target rotating speed is the rotating speed of the variable frequency compressor in the stable operation stage, and the second target rotating speed is calculated once every precision time, so that the second target rotating speed can be changed.
The second maximum rotational speed and the second target rotational speed are both calculated by the intelligent model.
It will be appreciated that during the temperature control phase, operating at the second maximum speed, rapid temperature control can be achieved. When the preset target temperature is not reached, the second maximum rotating speed is adjusted once every a period of time, so that the second maximum rotating speed is matched with the current ambient temperature, the change of the rotating speed output by the variable frequency compressor is smooth, and the efficiency improvement and the energy conservation are facilitated.
It can be appreciated that the benefits of digital speed control in the intelligent mode are:
1. through the digital parameters such as the time length parameter, the rotating speed of the variable frequency compressor can be quickly adjusted in the temperature control stage and the stable operation stage, the efficiency of the variable frequency compressor is improved, and the energy conservation of the variable frequency compressor is realized.
2. Through the second time length, namely the reference time length, the control on the maximum rotating speed running time length of the variable frequency compressor can be realized in the temperature control stage, the maximum rotating speed running time length in the temperature control stage is digitalized, and the control process is simple and convenient. A more accurate second duration may be obtained by the big data.
In the embodiment of the invention, the intelligent controller is added to support the expert mode and the intelligent mode, the operation mode can be switched remotely, and the relevant parameters of the expert mode and the intelligent mode can be configured remotely. Therefore, the method provided by the embodiment of the invention supports the remote control of the rotating speed of the variable-frequency compressor. The embodiment of the invention relates to a maximum rotating speed and a target rotating speed, the maximum rotating speed can ensure that the environmental temperature is quickly adjusted, the temperature control is faster and more accurate, and the target rotating speed can ensure the stable operation of the variable frequency compressor.
In the embodiment of the invention, referring to fig. 3, an intelligent controller is arranged between a cloud platform and a drive plate of a variable frequency compressor, the intelligent controller is connected with the drive plate, and the cloud platform can acquire some information, such as position, humidity, temperature and the like, from the drive plate through the intelligent controller. The cloud platform may acquire relevant data in a certain operation mode from the intelligent controller, for example, various durations, an intelligent model, an expert experience tachometer, and the like. The cloud platform determines the rotating speed according to the information in a certain operation mode, then generates a rotating speed control command, and issues the rotating speed control command to the drive plate through the intelligent control plate, so that the rotating speed control is realized.
It can be understood that since the positions can be in cities, and the expert experience tachometers correspond to different cities, a city-expert mode can be realized. With the subsequent time of the rotating speed control, the data such as the expert experience rotating speed table in the expert mode can be updated. In the embodiment of the invention, a one-city one-expert mode rotating speed control scheme can be realized, and a digital intelligent control scheme can also be realized. The method provided by the embodiment of the invention is executed by the cloud platform, so that the remote rotating speed control can be realized. Before the intelligent mode control is adopted, modeling is carried out by utilizing sample data to obtain an intelligent model.
In the embodiment of the invention, the intelligent controller is added, the two modes of the expert mode and the intelligent mode are realized to control the rotating speed of the variable-frequency compressor, and the remote switching mode can be carried out on a cloud platform besides the user switching mode. Moreover, the relevant parameters in the two modes can be configured on the cloud platform. The cloud platform acquires the position and the humidity from the variable frequency compressor and then acquires the corresponding expert experience tachometer, so that the rotating speed control of accurate adaptation can be realized, and the control scheme of one city-one expert mode is realized. In an intelligent mode, an intelligent model is obtained through mathematical modeling, the cloud platform obtains information such as position and temperature from the variable frequency compressor, and then obtains the matched intelligent model, the second time length and the third time length, the rotating speed is continuously adjusted along with the temperature control effect, namely the temperature control effect and the above-mentioned time length data are combined, digital rotating speed control in the intelligent mode is realized, the efficiency of the variable frequency compressor is improved, meanwhile, continuous adjustment can be realized, and continuous and smooth change of the output energy of the variable frequency compressor is realized.
In a second aspect, an embodiment of the present invention provides a rotation speed control apparatus for an inverter compressor.
Referring to fig. 4, the apparatus includes the steps of:
the first acquisition module is used for acquiring the operation mode of the intelligent controller of the variable frequency compressor;
the second acquisition module is used for acquiring the position, the current environment humidity and the current environment temperature of the variable frequency compressor if the operation mode is the expert mode;
the third acquisition module is used for acquiring a corresponding expert experience tachometer according to the position and the current environment humidity; the different positions and the different environmental humidities correspond to different expert experience rotating speed tables, and each expert experience rotating speed table comprises a first maximum rotating speed and a first target rotating speed corresponding to different temperatures;
the first searching module is used for searching a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature in an expert experience rotating speed table corresponding to the position and the current environment humidity;
and the first control module is used for controlling the inverter compressor to operate at the searched first maximum rotating speed and controlling the inverter compressor to operate at the searched first target rotating speed when the current ambient temperature of the inverter compressor reaches a preset target temperature.
In one embodiment, the first control module includes:
the first judgment unit is used for acquiring the current environment temperature of the variable frequency compressor every other first time period and judging whether the current environment temperature reaches the preset target temperature or not;
the first control unit is used for controlling the frequency converter compressor to operate at the searched first target rotating speed if the preset target temperature is reached;
and the second control unit is used for controlling the variable frequency compressor to operate at the searched first maximum rotating speed and returning to the first judgment unit if the preset target temperature is not reached.
In one embodiment, the apparatus further comprises:
a fourth obtaining module, configured to obtain a location and a current ambient temperature of the inverter compressor if the operation mode is an intelligent mode, and determine a corresponding intelligent model and a second duration according to the location and the current ambient temperature; the intelligent model is used for outputting a corresponding second maximum rotating speed and a corresponding second target rotating speed according to the position of the variable frequency compressor and the current environment temperature;
the second control module is used for inputting the current environment temperature into the intelligent model to obtain a corresponding second maximum rotating speed and controlling the variable frequency compressor to operate at the second maximum rotating speed;
a fifth obtaining module, configured to obtain a current ambient temperature of the inverter compressor after a duration that the inverter compressor operates at the second maximum rotational speed reaches the second duration, and determine whether the current ambient temperature reaches a preset target temperature;
and the third control module is used for inputting the preset target temperature into the intelligent model to obtain a corresponding second target rotating speed if the current environment temperature reaches the preset target temperature, and controlling the variable frequency compressor to operate at the second target rotating speed.
In an embodiment, the fourth obtaining module is further configured to, when determining the corresponding intelligent model and the second duration according to the location and the current ambient temperature: determining a corresponding third time length according to the position and the current environment temperature;
correspondingly, the device further comprises:
a temperature control module to: if the current environment temperature does not reach the preset target temperature, temperature control is carried out; wherein, the temperature control module includes:
the third control unit is used for inputting the current environment temperature of the variable frequency compressor into the intelligent model to obtain a corresponding second maximum rotating speed and controlling the variable frequency compressor to operate at the second maximum rotating speed;
the second judging unit is used for acquiring the current environment temperature of the variable frequency compressor after the time length for controlling the variable frequency compressor to operate at the second maximum rotating speed reaches the third time length, and judging whether the current environment temperature reaches the preset target temperature;
the fourth control unit is used for inputting the preset target temperature into the intelligent model to obtain a corresponding second target rotating speed if the preset target temperature is reached, and controlling the variable frequency compressor to operate at the second target rotating speed;
and the fifth control unit is used for returning to the third control unit if the preset target temperature is not reached.
In an embodiment, the fourth obtaining module is further configured to, when determining the corresponding intelligent model and the second duration according to the location and the current ambient temperature: determining a corresponding third time length according to the position and the current environment temperature;
correspondingly, the device can also comprise;
the rotating speed adjusting module is used for adjusting the operating rotating speed of the variable frequency compressor every third time after controlling the variable frequency compressor to operate at the second target rotating speed; wherein, rotational speed adjustment module includes: and acquiring the current environment temperature of the variable frequency compressor, inputting the current environment temperature into the intelligent model to obtain a corresponding second target rotating speed, and controlling the variable frequency compressor to operate at the second target rotating speed.
In one embodiment, the apparatus further comprises:
and the time length uploading module is used for determining the time length for adjusting the environment temperature of the variable frequency compressor from the initial temperature to the preset target temperature, and sending the time length to a cloud end so that the cloud end can adjust the configuration parameters in the intelligent mode according to the time length.
In one embodiment, the third duration is less than the second duration.
It is to be understood that for the explanation, the detailed description, the beneficial effects, the examples and the like of the related contents in the apparatus provided in the embodiment of the present invention, reference may be made to the corresponding parts in the method provided in the first aspect, and details are not described herein again.
In a third aspect, an embodiment of the present invention provides a computing device, where the device includes: at least one memory and at least one processor; the at least one memory to store a machine readable program; the at least one processor is configured to invoke the machine-readable program to perform the method provided by the first aspect.
It is to be understood that for the explanation, the specific implementation, the beneficial effects, the examples and the like of the related contents in the device provided by the embodiment of the present invention, reference may be made to the corresponding parts in the method provided by the first aspect, and details are not described herein again.
In a fourth aspect, embodiments of the present invention provide a computer-readable medium, on which computer instructions are stored, and when executed by a processor, the computer instructions cause the processor to perform the method provided in the first aspect.
Specifically, a system or an apparatus equipped with a storage medium on which software program codes that realize the functions of any of the above-described embodiments are stored may be provided, and a computer (or a CPU or MPU) of the system or the apparatus is caused to read out and execute the program codes stored in the storage medium.
In this case, the program code itself read from the storage medium can realize the functions of any of the above-described embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.
Examples of the storage medium for supplying the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (e.g., CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), a magnetic tape, a nonvolatile memory card, and a ROM. Alternatively, the program code may be downloaded from a server computer via a communications network.
Further, it should be clear that the functions of any one of the above-described embodiments may be implemented not only by executing the program code read out by the computer, but also by causing an operating system or the like operating on the computer to perform a part or all of the actual operations based on instructions of the program code.
Further, it is to be understood that the program code read out from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion module connected to the computer, and then causes a CPU or the like mounted on the expansion board or the expansion module to perform part or all of the actual operations based on instructions of the program code, thereby realizing the functions of any of the above-described embodiments.
It is to be understood that for the explanation, the detailed description, the beneficial effects, the examples and the like of the contents in the computer-readable medium provided in the embodiment of the present invention, reference may be made to the corresponding parts in the method provided in the first aspect, and details are not described here.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Those skilled in the art will recognize that the functionality described in this disclosure may be implemented in hardware, software, firmware, or any combination thereof, in one or more of the examples described above. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method of controlling the speed of an inverter compressor, the method comprising:
acquiring an operation mode of an intelligent controller of the variable frequency compressor;
if the operation mode is an expert mode, acquiring the position of the variable frequency compressor, the current environment humidity and the current environment temperature;
acquiring a corresponding expert experience tachometer according to the position and the current environment humidity; the different positions and the different environmental humidities correspond to different expert experience rotating speed tables, and each expert experience rotating speed table comprises a first maximum rotating speed and a first target rotating speed corresponding to different temperatures;
searching a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature in an expert experience rotating speed table corresponding to the position and the current environment humidity;
and controlling the inverter compressor to operate at the searched first maximum rotating speed, and controlling the inverter compressor to operate at the searched first target rotating speed when the current ambient temperature of the inverter compressor reaches a preset target temperature.
2. The method as claimed in claim 1, wherein the controlling the inverter compressor to operate at the searched first target rotational speed when the current ambient temperature of the inverter compressor reaches a preset target temperature comprises:
acquiring the current ambient temperature of the variable frequency compressor every other first time interval, and judging whether the current ambient temperature reaches the preset target temperature;
if so, controlling the frequency converter compressor to operate at the searched first target rotating speed;
otherwise, controlling the inverter compressor to operate at the found first maximum rotating speed, and returning to the step of obtaining the current ambient temperature of the inverter compressor at intervals of the first time.
3. The method of claim 1, further comprising:
if the operation mode is an intelligent mode, acquiring the position of the variable frequency compressor and the current environment temperature, and determining a corresponding intelligent model and a second time length according to the position and the current environment temperature; the intelligent model is used for outputting a corresponding second maximum rotating speed and a corresponding second target rotating speed according to the position of the variable frequency compressor and the current environment temperature;
inputting the current environment temperature into the intelligent model to obtain a corresponding second maximum rotating speed, and controlling the variable frequency compressor to operate at the second maximum rotating speed;
when the time length of the inverter compressor running at the second maximum rotating speed reaches the second time length, acquiring the current ambient temperature of the inverter compressor, and judging whether the current ambient temperature reaches a preset target temperature;
and if the current environment temperature reaches the preset target temperature, inputting the preset target temperature into the intelligent model to obtain a corresponding second target rotating speed, and controlling the variable frequency compressor to operate at the second target rotating speed.
4. The method of claim 3, wherein when determining the corresponding intelligent model and second duration according to the location and the current ambient temperature, the method further comprises: determining a corresponding third time length according to the position and the current environment temperature;
correspondingly, the method further comprises the following steps: if the current environment temperature does not reach the preset target temperature, temperature control is carried out; wherein, the temperature control process comprises:
inputting the current environment temperature of the variable frequency compressor into the intelligent model to obtain a corresponding second maximum rotating speed, and controlling the variable frequency compressor to operate at the second maximum rotating speed;
after the time length for controlling the variable frequency compressor to operate at the second maximum rotating speed reaches the third time length, acquiring the current ambient temperature of the variable frequency compressor, and judging whether the current ambient temperature reaches the preset target temperature;
if so, ending the temperature control process, inputting the preset target temperature into the intelligent model to obtain a corresponding second target rotating speed, and controlling the variable frequency compressor to operate at the second target rotating speed;
and otherwise, returning to the step of inputting the current environment temperature of the variable-frequency compressor into the intelligent model to obtain a corresponding second maximum rotating speed, and controlling the variable-frequency compressor to operate at the second maximum rotating speed.
5. The method of claim 3, wherein when determining the corresponding intelligent model and second duration according to the location and the current ambient temperature, the method further comprises: determining a corresponding third time length according to the position and the current environment temperature;
correspondingly, the method further comprises the following steps:
after the inverter compressor is controlled to operate at the second target rotating speed, the operating rotating speed of the inverter compressor is adjusted every third time period, and the rotating speed adjusting process comprises the following steps: and acquiring the current environment temperature of the variable frequency compressor, inputting the current environment temperature into the intelligent model to obtain a corresponding second target rotating speed, and controlling the variable frequency compressor to operate at the second target rotating speed.
6. The method of claim 3, further comprising:
determining the time length for adjusting the environment temperature of the variable frequency compressor from the initial temperature to the preset target temperature, and sending the time length to a cloud end so that the cloud end can adjust the configuration parameters in the intelligent mode according to the time length.
7. The method of claim 4 or 5, wherein the third time period is less than the second time period.
8. A rotation speed control device of a variable frequency compressor is characterized in that,
the first acquisition module is used for acquiring the operation mode of the intelligent controller of the variable frequency compressor;
the second acquisition module is used for acquiring the position, the current environment humidity and the current environment temperature of the variable frequency compressor if the operation mode is the expert mode;
the third acquisition module is used for acquiring a corresponding expert experience tachometer according to the position and the current environment humidity; the different positions and the different environmental humidities correspond to different expert experience rotating speed tables, and each expert experience rotating speed table comprises a first maximum rotating speed and a first target rotating speed corresponding to different temperatures;
the first searching module is used for searching a first maximum rotating speed and a first target rotating speed corresponding to the current environment temperature in an expert experience rotating speed table corresponding to the position and the current environment humidity;
and the first control module is used for controlling the inverter compressor to operate at the searched first maximum rotating speed and controlling the inverter compressor to operate at the searched first target rotating speed when the current ambient temperature of the inverter compressor reaches a preset target temperature.
9. A computing device, the device comprising: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor, configured to invoke the machine readable program, to perform the method of any of claims 1 to 7.
10. A computer readable medium having stored thereon computer instructions which, when executed by a processor, cause the processor to perform the method of any one of claims 1 to 7.
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