CN109520098B - Control method and control device for compressor frequency and air conditioner - Google Patents
Control method and control device for compressor frequency and air conditioner Download PDFInfo
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- CN109520098B CN109520098B CN201811427745.0A CN201811427745A CN109520098B CN 109520098 B CN109520098 B CN 109520098B CN 201811427745 A CN201811427745 A CN 201811427745A CN 109520098 B CN109520098 B CN 109520098B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
Abstract
The invention provides a control method and a control device for compressor frequency and an air conditioner, and relates to the technical field of air conditioners. The control method comprises the following steps: a first average value of the external environment temperature of an outdoor unit of an air conditioner in a first time interval and a second average value of the external environment temperature in a second time interval are obtained. And determining the judgment standard critical point temperature according to the average value of the first external environment temperature. And controlling the working frequency of the compressor according to the first average value of the external environment temperature, the second average value of the external environment temperature and the temperature of the judgment standard critical point. The control method can enable the external environment temperature to be more accurately controlled when the temperature of the external environment temperature is close to the judgment standard critical point temperature, and avoid frequent change of the working frequency of the outdoor compressor, thereby improving the use experience of users.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device for compressor frequency and an air conditioner.
Background
When the air conditioner refrigerates the external environment at high temperature at present, because most air conditioner products of manufacturers do not have high-pressure sensors or the temperature control accuracy of a pipe in an outer unit condenser is poor, the frequency of the compressor can be fixedly output according to a set value in an external environment temperature range. When the external environment temperature is at the critical point of the external environment temperature interval, frequent rising and falling of the frequency of the compressor may be caused, so that the indoor blowing temperature changes greatly, and the user experience is reduced.
Disclosure of Invention
The invention solves the problem that the frequent fluctuation of the frequency of the compressor leads to the frequent change of the indoor blowing temperature when the temperature of the external environment changes, thereby improving the use experience of users.
In order to solve the above problems, the present invention provides a method for controlling a frequency of a compressor, comprising:
acquiring a first external environment temperature average value of an outdoor unit of an air conditioner in a first time period and a second external environment temperature average value in a second time period, wherein the second time period is a period of time before the first time period is finished, and the duration of the second time period is less than the first time period;
determining a judgment standard critical point temperature according to the first external environment temperature average value, wherein the judgment standard critical point temperature is one of a plurality of critical point temperatures which is close to the first external environment temperature average value and the second external environment temperature average value, and the plurality of critical point temperatures represent end point temperatures of a preset environment temperature interval according to which the working frequency of a compressor of the outdoor unit is controlled in a refrigeration mode;
and controlling the working frequency of the compressor according to the first external environment temperature average value, the second external environment temperature average value and the judgment standard critical point temperature.
Through the operating frequency basis of compressor first outside environment temperature average value, second outside environment temperature average value reaches judgement standard critical point temperature control controls, that is to say, through the parameter adjustment to the scope that outside environment temperature detected and detection time number of times, can make outside environment temperature near when judging standard critical point temperature change, control more accurate, avoid the frequent change of the operating frequency of outdoor compressor to improve user's use and experience.
Further, the step of determining the critical point temperature of the judgment criterion according to the average value of the first external environment temperature includes:
if tn-1＜tao’≤tnDetermining the judgment standard critical point temperature according to the first external environment temperature average value and the interval midpoint temperature of the preset environment temperature interval when the first time period timing is finished;
wherein, tn-1For the preset environmental temperature interval (t)n-1，tn]Critical point temperature, t, corresponding to the lower limit of the middle intervalnFor the preset environmental temperature interval (t)n-1，tn]Critical point temperature, t, corresponding to the upper limit value of the intervalao' is the first external ambient temperature average value, and n is a positive integer greater than or equal to 2.
And determining the judgment standard critical point temperature according to the first external environment temperature average value and the interval midpoint temperature of the preset environment temperature interval, so that the determination of the judgment standard critical point temperature is more accurate, and the working frequency of the compressor is controlled according to the first external environment temperature average value, the second external environment temperature average value and the judgment standard critical point temperature.
Further, if tn-1＜tao’≤tnIf the first period of time is over, the step of determining the judgment standard critical point temperature according to the first external environment temperature average value and the interval midpoint temperature of the preset environment temperature interval includes:
if tn-1＜tao’≤tnAnd t isao’≥(tn-1+tn) 2, then determining the critical point temperature tnIs the judgment standardA critical point temperature;
wherein (t)n-1+tn) And/2 represents the interval midpoint temperature of the preset environment temperature interval.
When the average value of the first external environment temperature is greater than or equal to the middle point temperature of the interval of the preset environment temperature interval, the average value of the first external environment temperature is closer to the preset environment temperature interval (t)n-1，tn]Thus, the critical point temperature t is determinednTherefore, the standard critical point temperature is more accurately judged, and the working frequency of the compressor is more favorably and accurately controlled.
Further, the step of controlling the operating frequency of the compressor according to the first average value of the external environment temperature, the second average value of the external environment temperature, and the determination criterion critical point temperature includes:
if (t)n-1+tn)/2≤tao’＜tn-M and tao‘’≤tn-N, then controlling the operating frequency of the compressor to a preset operating frequency phin-1Outputting;
wherein, tao'' represents the second average ambient temperature, M represents a preset first judgment temperature, N represents a preset second judgment temperature, and both M and N are less than the preset ambient temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phin-1For the preset environmental temperature interval (t)n-1，tn]And the corresponding preset working frequency.
Thus, it can be said that the external ambient temperature is away from the critical point temperature tnFar away from the next preset environment temperature interval (t)n，tn+1]At this time, the preset environmental temperature interval (t) is still keptn-1，tn]Corresponding preset working frequency phin-1The output of the compressor is controlled, so that frequent change of the working frequency of the compressor is better prevented, and the user experience is improved.
Further, the step of controlling the operating frequency of the compressor according to the first average value of the external environment temperature, the second average value of the external environment temperature, and the determination criterion critical point temperature includes:
if tn-M≤tao’≤tnOr t isao’＜tn-M and tao‘’＞tn-N, then controlling the operating frequency of the compressor to a preset operating frequency phinOutputting;
wherein, tao'' represents the second average ambient temperature, M represents a preset first judgment temperature, N represents a preset second judgment temperature, and both M and N are less than the preset ambient temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phinFor the preset environmental temperature interval (t)n，tn+1]And the corresponding preset working frequency.
Thus, it can be said that the external ambient temperature is away from the critical point temperature tnRelatively close, having changed to the next preset ambient temperature interval (t)n，tn+1]At this time, according to the preset environmental temperature interval (t)n，tn+1]Corresponding preset working frequency phinThe output of the compressor is controlled, so that frequent change of the working frequency of the compressor is better prevented, and the user experience is improved.
Further, if tn-1＜tao’≤tnIf the first period of time is over, the step of determining the judgment standard critical point temperature according to the first external environment temperature average value and the interval midpoint temperature of the preset environment temperature interval includes:
if tn-1＜tao’≤tnAnd t isao’＜(tn-1+tn) 2, then determining the critical point temperature tn-1Is the judgment standard critical point temperature;
wherein (t)n-1+tn) And/2 represents the interval midpoint temperature of the preset environment temperature interval.
Further, the step of controlling the operating frequency of the compressor according to the first average value of the external environment temperature, the second average value of the external environment temperature, and the determination criterion critical point temperature includes:
if tn-1≤tao’≤tn-1+ M, or tao’＞tn-1+ M and tao‘’＜tn-1+ N, controlling the working frequency of the compressor according to the preset working frequency phin-2Outputting;
wherein, tao'' represents the second average ambient temperature, M represents a preset first judgment temperature, N represents a preset second judgment temperature, and both M and N are less than the preset ambient temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phin-2For the preset environmental temperature interval (t)n-2，tn-1]And n is a positive integer greater than or equal to 3 corresponding to the preset working frequency.
Thus, when t is satisfiedn-1≤tao’≤tn-1+ M, or tao’＞tn-1+ M and tao‘’＜tn-1+ N, it can indicate that the external environment temperature is away from the critical point temperature tn-1Relatively close to the last preset ambient temperature interval (t)n-2，tn-1]At this time, according to the preset environmental temperature interval (t)n-2，tn-1]Corresponding preset working frequency phin-2The output of the compressor is controlled, so that frequent change of the working frequency of the compressor is better prevented, and the user experience is improved.
Further, the step of controlling the operating frequency of the compressor according to the first average value of the external environment temperature, the second average value of the external environment temperature, and the judgment standard critical point temperature includes:
if (t)n-1+tn)/2＞tao’＞tn-1+ M and tao‘’≥tn-1+ N, controlling the working frequency of the compressor according to the preset working frequency phin-1Outputting;
wherein, tao'' represents the second external environment temperature average value, M represents a preset first judgment temperature, N represents a preset second judgment temperature, and M and N are both smaller than the preset second judgment temperatureSetting the ambient temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phin-1For the preset environmental temperature interval (t)n-1，tn]And n is a positive integer greater than or equal to 2 corresponding to the preset working frequency.
Thus, when (t) is satisfiedn-1+tn)/2＞tao’＞tn-1+ M and tao‘’≥tn-1+ N, it can indicate that the external environment temperature is away from the critical point temperature tn-1Far away, at this time, according to the preset environmental temperature interval (t)n-1，tn]Corresponding preset working frequency phin-1The output of the compressor is controlled, so that frequent change of the working frequency of the compressor is better prevented, and the user experience is improved.
The embodiment of the invention also provides a control device of the compressor frequency, which comprises the following components:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring a first external environment temperature average value of an outdoor unit of an air conditioner in a first time period and a second external environment temperature average value in a second time period, the second time period is a period of time before the first time period is finished, and the duration of the second time period is less than the first time period;
a determining module, configured to determine a determination standard critical point temperature according to the first external environment temperature average value, where the determination standard critical point temperature is a critical point temperature that is close to the first external environment temperature average value and the second external environment temperature average value among multiple critical point temperatures, and the multiple critical point temperatures indicate endpoint temperatures of a preset environment temperature interval according to which an operating frequency of a compressor of the outdoor unit is controlled in a refrigeration mode;
and the control module is used for controlling the working frequency of the compressor according to the first external environment temperature average value, the second external environment temperature average value and the judgment standard critical point temperature.
Through the parameter adjustment to the scope that external environment temperature detected and detection time number of times, can make external environment temperature near judge that standard critical point temperature changes when, control is more accurate, avoids the frequent change of the operating frequency of outdoor compressor to improve user's use and experience.
An embodiment of the present invention further provides an air conditioner, including: a memory and a controller; the memory stores a computer program that when read and executed by the controller implements any of the methods for controlling compressor frequency.
Through the parameter adjustment to the scope that external environment temperature detected and detection time number of times, can make external environment temperature near judge that standard critical point temperature changes when, control is more accurate, avoids the frequent change of the operating frequency of outdoor compressor to improve user's use and experience.
Drawings
Fig. 1 is a schematic block diagram of an air conditioner to which a control method of a compressor frequency and a control device of the compressor frequency according to an embodiment of the present invention are applied;
FIG. 2 is a block diagram illustrating a flow chart of a method for controlling a frequency of a compressor according to an embodiment of the present invention;
FIG. 3 is a block diagram illustrating a flow chart of a method for controlling a frequency of a compressor according to another embodiment of the present invention;
fig. 4 is a block diagram schematically illustrating a structure of a control apparatus for a compressor frequency according to an embodiment of the present invention.
Description of reference numerals:
10-an air conditioner; 11-a memory; 12-a controller; 100-control of the compressor frequency; 110-a calculation module; 120-an acquisition module; 130-a determination module; 140-control module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the invention provides a method and a device 100 for controlling a compressor frequency, which are applied to an air conditioner 10 and used for controlling an operating frequency of a compressor of an outdoor unit of the air conditioner 10 according to an external environment temperature of the outdoor unit. The air conditioner 10 includes a memory 11, a controller 12, and a control device 100 for the compressor frequency.
The memory 11 and the controller 12 are electrically connected to each other directly or indirectly to enable data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The control device 100 of the compressor frequency comprises at least one software functional module which can be stored in the memory 11 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the server. The controller 12 is used for executing executable modules stored in the memory 11, such as software functional modules and computer programs included in the control device 100 for the compressor frequency.
The Memory 11 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 11 is used for storing a program, and the controller 12 executes the program after receiving the execution instruction.
The method for controlling the compressor frequency is applied to a control mode in which the outdoor unit controls the output of the compressor operating frequency according to the external environment temperature interval in the cooling mode of the air conditioner 10. The control mode for controlling the output of the operating frequency of the compressor by the outdoor unit according to the external environment temperature interval may include:
when the actual external ambient temperature taoIs raised and the actual external ambient temperature taoTemperature t not less than critical pointnWhen so, the compressor output is reduced;
when the actual external ambient temperature taoReduced and actual external ambient temperature taoTemperature t < critical pointnWhen so, the compressor output is increased.
In the cooling mode, n critical temperature points t are set1、t2…tnAnd t is1＜t2＜…＜tnAnd n is a positive integer greater than or equal to 2. Optionally, according to the external environment temperature, the critical point temperature may range from 35 to 65 ℃, and the adjacent critical temperature interval may range from 3 to 10 ℃, further, may be 3 ℃, 5 ℃, 7 ℃, 10 ℃, and the like. It should be noted that the preset ambient temperature interval is (t)n-1，tn]The operating frequency of the compressor output corresponds to phin-1. The relative relationship of the working frequency output by the compressor in each preset environment temperature interval is as follows: … phin-2＞Φn-1＞Φn＞Φn+1…。
Referring to fig. 2, the method for controlling the frequency of the compressor includes the following steps:
step S100, obtaining a plurality of first external environment temperatures of the outdoor unit of the air conditioner 10 detected in a first time period, and calculating an average value of the plurality of first external environment temperatures to obtain a first external environment temperature average value, wherein the plurality of first external environment temperatures are obtained by detecting the external environment temperature of the outdoor unit at intervals of time T1 in the first time period.
In this embodiment, the external environment temperature sensor detects the external environment temperature 1 time every 30 seconds, that is, the interval time T1 is 30 seconds, so as to obtain a plurality of first external environment temperatures, and calculate to obtain a first external environment temperature average value. First outside ambient temperature average value is tao' means. The external ambient temperature at the initial time is taoAnd current compressor is pressed by phinAnd (6) outputting. In addition, the first period TX may be 60min, and in this embodiment, an average value of a plurality of first external environment temperatures in the period may be calculated every first period TX.
Step S200 is to obtain a plurality of first external ambient temperatures of the outdoor unit of the air conditioner 10 detected in the second time period, and calculate an average value of the plurality of second external ambient temperatures to obtain a second external ambient temperature average value. The plurality of second external ambient temperatures are obtained by detecting the external ambient temperature of the outdoor unit at intervals of T2 in a second time period, and the second time period is a time period before the end of the first time period, and the duration of the second time period is shorter than the first time period.
In this embodiment, the external environment temperature sensor detects the external environment temperature 1 time every 30 seconds, that is, the interval time T2 is 30s, so as to obtain a plurality of second external environment temperatures, and calculate to obtain a second external environment temperature average value, where the second external environment temperature average value is Tao'' indicates. T2 may be the same as or different from T1. The values of T1 and T2 can be set correspondingly according to actual needs. The second period TY may be selected as k TX time before the end of the first period, for example, TX 60min, k may be 10%, TY may be selected as 6 min. Of course, the values of TX and TY and the scaling factor k may be set according to actual needs.
In step S300, a first average value of the external ambient temperature of the outdoor unit of the air conditioner 10 in a first time period and a second average value of the external ambient temperature in a second time period are obtained. The second time interval is a period of time before the first time interval is ended, and the duration of the second time interval is smaller than the first time interval.
In step S400, a determination criterion critical point temperature is determined according to the first external environment temperature average value. The judgment standard critical point temperature is one critical point temperature which is close to the average value of the first external environment temperature and the average value of the second external environment temperature in the plurality of critical point temperatures, and the plurality of critical point temperatures represent endpoint temperatures of a preset environment temperature interval according to which the working frequency of the compressor is controlled in the refrigeration mode.
In this embodiment, in step S400, if t is the samen-1＜tao’≤tnAnd determining the judgment standard critical point temperature according to the first external environment temperature average value and the middle point temperature in the interval of the preset environment temperature interval when the first time period is timed out.
Wherein, tn-1For presetting an ambient temperature interval (t)n-1，tn]Critical point temperature, t, corresponding to the lower limit of the middle intervalnFor presetting an ambient temperature interval (t)n-1，tn]The critical point temperature corresponding to the upper limit value of the interval in (1).
The judgment standard critical point temperature is determined according to the first external environment temperature average value and the middle point temperature in the interval of the preset environment temperature interval, so that the judgment standard critical point temperature is more accurately determined, and the working frequency of the compressor is more favorably controlled according to the first external environment temperature average value, the second external environment temperature average value and the judgment standard critical point temperature.
Referring to FIG. 3, in some embodiments of the present invention, further, if tn-1＜tao’≤tnWhen the first period of time is over, the step of determining the judgment standard critical point temperature according to the first external environment temperature average value and the interval midpoint temperature of the preset environment temperature interval may include:
step S410, if t isn-1＜tao’≤tnAnd t isao’≥(tn-1+tn) 2, then determining the critical point temperature tnTo determine the standard critical point temperature.
Wherein (t)n-1+tn) And/2 represents the interval midpoint temperature of the preset environment temperature interval.
It should be understood that when the first external ambient temperature average value is greater than or equal to the middle point temperature of the preset ambient temperature interval, the first external ambient temperature average value is closer to the preset ambient temperature interval (t;)n-1，tn]Thus, the critical point temperature t is determinednThe temperature of the standard critical point is more accurate, and the working frequency of the compressor can be accurately controlled.
Step S420, if tn-1＜tao’≤tnAnd t isao’＜(tn-1+tn) 2, then determining the critical point temperature tn-1To determine the standard critical point temperature.
It should be understood that when the first external ambient temperature average value is less than the middle point temperature of the preset ambient temperature interval, the first external ambient temperature average value is closer to the preset ambient temperature interval (t)n-1，tn]Thus, the critical point temperature t is determinedn-1To determine the standard critical point temperatureThe degree is more accurate, more is favorable to carrying out accurate control to the operating frequency of compressor.
Referring to fig. 2, in step S500, the operating frequency of the compressor is controlled according to the first average value of the external ambient temperature, the second average value of the external ambient temperature, and the determination criterion critical point temperature.
The working frequency of the compressor is controlled according to the average value of the temperature of the first external environment, the average value of the temperature of the second external environment and the temperature control of the critical point of the judgment standard, namely, the external environment temperature can be controlled more accurately when the temperature of the critical point of the judgment standard is close to and is changed by adjusting the range of the detection of the external environment temperature and the parameters of the detection time, so that the frequent change of the working frequency of the compressor is avoided, and the use experience of a user is improved.
Referring to fig. 3, in some embodiments of the present invention, after step S410, step S500 includes the following steps:
step S510, if (t)n-1+tn)/2≤tao’＜tn-M and tao‘’≤tnN, controlling the working frequency of the compressor to be the preset working frequency phin-1And (6) outputting.
Wherein M represents a preset first judgment temperature, N represents a preset second judgment temperature, and both M and N are less than a preset environment temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phin-1For presetting an ambient temperature interval (t)n-1，tn]And the corresponding preset working frequency.
It should be noted that M may be selected to be 1.5-3 deg.C, and N may be selected to be 0-1 deg.C, for example, in this embodiment, M is 2 deg.C and N is 1 deg.C.
Thus, when (t) is satisfiedn-1+tn)/2≤tao’＜tn-M and tao‘’≤tnN, it is possible to specify the temperature of the external environment from the critical point temperature tnFar away from the next preset environment temperature interval (t)n，tn+1]At this time, the preset environmental temperature interval (t) is still keptn-1，tn]Corresponding preset working frequencyRatio phin-1The output of the compressor is controlled, so that frequent change of the working frequency of the compressor is better prevented, and the user experience is improved.
Step S520, if tn-M≤tao’≤tnOr t isao’＜tn-M and tao‘’＞tnN, controlling the working frequency of the compressor to be the preset working frequency phinAnd (6) outputting.
Wherein phinFor presetting an ambient temperature interval (t)n，tn+1]And the corresponding preset working frequency.
Thus, when t is satisfiedn-M≤tao’≤tnOr t isao’＜tn-M and tao‘’＞tnN, it is possible to specify the temperature of the external environment from the critical point temperature tnRelatively close, having changed to the next preset ambient temperature interval (t)n，tn+1]At this time, according to the preset environmental temperature interval (t)n，tn+1]Corresponding preset working frequency phinThe output of the compressor is controlled, so that frequent change of the working frequency of the compressor is better prevented, and the user experience is improved.
In some embodiments of the present invention, after step S420, step S500 comprises the steps of:
step S530, if tn-1≤tao’≤tn-1+ M, or tao’＞tn-1+ M and tao‘’＜tn-1+ N, then controlling the working frequency of the compressor according to the preset working frequency phin-2And (6) outputting. Wherein phin-2For the preset environmental temperature interval (t)n-2，tn-1]And n is a positive integer greater than or equal to 3 corresponding to the preset working frequency.
Thus, when t is satisfiedn-1≤tao’≤tn-1+ M, or tao’＞tn-1+ M and tao‘’＜tn-1+ N, it can indicate that the external environment temperature is away from the critical point temperature tn-1Relatively close to the last preset ambient temperature interval (t)n-2，tn-1]According to a preset ambient temperature interval (t)n-2，tn-1]Corresponding preset working frequency phin-2The output of the compressor is controlled, so that frequent change of the working frequency of the compressor is better prevented, and the user experience is improved.
In particular, when t is satisfied1≤tao’≤t1+ M, or tao’＞t1+ M and tao‘’＜t1At + N, has changed to below t1At this time, according to t1And outputting the corresponding preset fixed working frequency value of the compressor.
In step S540, if (t)n-1+tn)/2＞tao’＞tn-1+ M and tao‘’≥tn-1+ N, then controlling the working frequency of the compressor according to the preset working frequency phin-1And (6) outputting. Wherein phin-1For the preset environmental temperature interval (t)n-2，tn-1]And n is a positive integer greater than or equal to 2 corresponding to the preset working frequency.
Thus, when (t) is satisfiedn-1+tn)/2＞tao’＞tn-1+ M and tao‘’≥tn-1+ N, it can indicate that the external environment temperature is away from the critical point temperature tn-1Far away, at this time, according to the preset environmental temperature interval (t)n-1，tn]Corresponding preset working frequency phin-1The output of the compressor is controlled, so that frequent change of the working frequency of the compressor is better prevented, and the user experience is improved.
It should be noted that, when the external environment temperature is lower than the preset environment temperature range (t)1，t2]Critical point temperature t corresponding to the lower limit value of the interval of (3)1The compressor is controlled to output according to a preset fixed working frequency value.
The following describes a working procedure of a method for controlling a frequency of a compressor according to an embodiment of the present invention:
in the refrigeration mode, critical temperature points of 40 deg.C, 45 deg.C, 50 deg.C, and 55 deg.C are set, and adjacent critical temperature interval is 5 deg.C, and the preset environment temperature interval is (40 deg.C, 45 deg.C)]、(45℃，50℃]、(50℃，55℃]. The plurality of first external environment temperatures are obtained by detecting the external environment temperature once every 30s by the external environment temperature sensor in the first period, i.e., the interval time T1 is 30 s. The plurality of second external ambient temperatures are obtained by detecting the external ambient temperature once every 30s by the external ambient temperature sensor during the second period, i.e., the interval time T2 is 30 s. Calculating the average value t of the first external environment temperature every 60minao', i.e. the first period TX is 60min, in this embodiment the first external ambient temperature mean value tao' -43 ℃. Calculating the second external ambient temperature average t within the above-mentioned time period of 55-60min within 60minao'' second ambient temperature average value t in this embodimentao'' 41 deg.C. Because the temperature is less than 40 ℃ and less than 43 ℃ and less than or equal to 45 ℃ and the temperature is more than or equal to 43 ℃ and more than or equal to 42.5 ℃, namely the condition t is metn-1＜tao’≤tnAnd t isao’≥(tn-1+tn) 2, then determining the critical point temperature tnThe critical point temperature of the judgment standard is 45 ℃. The first judgment temperature M is 2 ℃, the second judgment temperature is 1 ℃, and the condition t is met because the temperature is not less than 43 ℃ and not more than 45 DEG Cn-M≤tao’≤tnThen controlling the working frequency of the compressor to be in accordance with the preset working frequency phinOutputting, namely controlling the compressor to be in a preset environment temperature range (45 ℃, 50℃)]And outputting the corresponding working frequency. In summary, the method for controlling the frequency of the compressor provided by the embodiment of the present invention adjusts the parameters of the detection range and the detection time number of the external environment temperature, so that the external environment temperature can be controlled more accurately when the external environment temperature is close to the temperature change of the judgment standard critical point, and the frequent change of the working frequency of the outdoor compressor is avoided, thereby improving the user experience.
Referring to fig. 4, in addition, the control apparatus 100 for compressor frequency according to the embodiment of the present invention includes a calculating module 110, an obtaining module 120, a determining module 130 and a control module 140.
A calculating module 110, configured to obtain a plurality of first external environment temperatures of the outdoor unit of the air conditioner 10 detected in a first time period, and calculate an average value of the plurality of first external environment temperatures to obtain a first external environment temperature average value; and the controller is configured to obtain a plurality of first external ambient temperatures of the outdoor unit of the air conditioner 10 detected in a second time period, and calculate an average value of the plurality of second external ambient temperatures to obtain a second external ambient temperature average value.
In the embodiment of the present invention, step S100 and step S200 are executed by the computing module 110.
The obtaining module 120 is configured to obtain a first average value of the external environment temperature of the outdoor unit of the air conditioner 10 in a first time period and a second average value of the external environment temperature in a second time period.
In the embodiment of the present invention, step S300 is executed by the obtaining module 120.
The determining module 130 is configured to determine the critical point temperature of the determination criterion according to the average value of the first external environment temperature.
In the embodiment of the present invention, step S400 is executed by the determining module 130.
Further, the determining module 130 is further configured to determine if tn-1＜tao’≤tnAnd t isao’≥(tn-1+tn) 2, then determining the critical point temperature tnTo determine the standard critical point temperature. The determination module 130 is further configured to determine if tn-1＜tao’≤tnAnd t isao’＜(tn-1+tn) 2, then determining the critical point temperature tn-1To determine the standard critical point temperature.
In the embodiment of the present invention, step S410 and step S420 are executed by the determining module 130.
The control module 140 is configured to control the operating frequency of the compressor according to the first average external ambient temperature, the second average external ambient temperature, and the determination criterion critical point temperature.
In the embodiment of the present invention, step S500 is executed by the control module 140.
The control module 140 is also configured to determine if (t)n-1+tn)/2≤tao’＜tn-M and tao‘’≤tnN, controlling the working frequency of the compressor to be the preset working frequency phin-1And (6) outputting.
In the embodiment of the present invention, step S510 is executed by the control module 140.
The control module 140 is also configured to determine if tn-M≤tao’≤tnOr t isao’＜tn-M and tao‘’＞tnN, controlling the working frequency of the compressor to be the preset working frequency phinAnd (6) outputting.
In the embodiment of the present invention, step S520 is executed by the control module 140.
The control module 140 is also configured to determine if tn-1≤tao’≤tn-1+ M, or tao’＞tn-1+ M and tao‘’＜tn-1+ N, then controlling the working frequency of the compressor according to the preset working frequency phin-2And (6) outputting.
In the embodiment of the present invention, step S530 is executed by the control module 140.
The control module 140 is also configured to determine if (t)n-1+tn)/2＞tao’＞tn-1+ M and tao‘’≥tn-1+ N, then controlling the working frequency of the compressor according to the preset working frequency phin-1And (6) outputting.
In the embodiment of the present invention, step S540 is executed by the control module 140.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method of controlling a frequency of a compressor, comprising:
acquiring a first external environment temperature average value of an outdoor unit of an air conditioner (10) in a first time period and a second external environment temperature average value in a second time period, wherein the second time period is a period of time before the first time period is finished, and the duration of the second time period is less than the first time period;
determining a judgment standard critical point temperature according to the first external environment temperature average value, wherein the judgment standard critical point temperature is one of a plurality of critical point temperatures which is close to the first external environment temperature average value and the second external environment temperature average value, and the plurality of critical point temperatures represent end point temperatures of a preset environment temperature interval according to which the working frequency of a compressor of the outdoor unit is controlled in a refrigeration mode;
and controlling the working frequency of the compressor according to the first external environment temperature average value, the second external environment temperature average value and the judgment standard critical point temperature.
2. The method of claim 1, wherein the step of determining a decision criterion critical point temperature from the first average value of the external ambient temperature comprises:
if tn-1＜tao’≤tnDetermining the judgment standard critical point temperature according to the first external environment temperature average value and the interval midpoint temperature of the preset environment temperature interval when the first time period timing is finished;
wherein, tn-1For the preset environmental temperature interval (t)n-1，tn]Critical point temperature, t, corresponding to the lower limit of the middle intervalnFor the preset environmental temperature interval (t)n-1，tn]Critical point temperature, t, corresponding to the upper limit value of the intervalao' is the first external ambient temperature average value, and n is a positive integer greater than or equal to 2.
3. Method for controlling the frequency of a compressor according to claim 2, characterized in that said frequency t is determined by said frequency tn-1＜tao’≤tnIf the first period of time is over, the step of determining the judgment standard critical point temperature according to the first external environment temperature average value and the interval midpoint temperature of the preset environment temperature interval includes:
if tn-1＜tao’≤tnAnd t isao’≥(tn-1+tn) 2, then determining the critical point temperature tnIs the judgment standard critical point temperature;
wherein (t)n-1+tn) And/2 represents the interval midpoint temperature of the preset environment temperature interval.
4. The method of controlling a frequency of a compressor according to claim 3,
the step of controlling the operating frequency of the compressor according to the first average value of the external environment temperature, the second average value of the external environment temperature, and the judgment standard critical point temperature includes:
if (t)n-1+tn)/2≤tao’＜tn-M and tao″≤tn-N, then controlling the operating frequency of the compressor to a preset operating frequency phin-1Outputting;
wherein, tao"represents the average value of the second external ambient temperature, M represents a preset first judgment temperature, N represents a preset second judgment temperature, and both M and N are less than the preset ambient temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phin-1For the preset environmental temperature interval (t)n-1，tn]And the corresponding preset working frequency.
5. The method as claimed in claim 3, wherein the step of controlling the operating frequency of the compressor according to the first average value of the external ambient temperature, the second average value of the external ambient temperature and the critical point temperature of the determination criterion comprises:
if tn-M≤tao’≤tnOr t isao’＜tn-M and tao″＞tn-N, then controlling the operating frequency of the compressor to a preset operating frequency phinOutputting;
wherein, tao"represents the average value of the second external ambient temperature, M represents a preset first judgment temperature, N represents a preset second judgment temperature, and both M and N are less thanThe preset environment temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phinFor the preset environmental temperature interval (t)n，tn+1]And the corresponding preset working frequency.
6. Method for controlling the frequency of a compressor according to claim 2, characterized in that said frequency t is determined by said frequency tn-1＜tao’≤tnIf the first period of time is over, the step of determining the judgment standard critical point temperature according to the first external environment temperature average value and the interval midpoint temperature of the preset environment temperature interval includes:
if tn-1＜tao’≤tnAnd t isao’＜(tn-1+tn) 2, then determining the critical point temperature tn-1Is the judgment standard critical point temperature;
wherein (t)n-1+tn) And/2 represents the interval midpoint temperature of the preset environment temperature interval.
7. The method as claimed in claim 6, wherein the step of controlling the operating frequency of the compressor according to the first average value of the external ambient temperature, the second average value of the external ambient temperature and the critical point temperature of the determination criterion comprises:
if tn-1≤tao’≤tn-1+ M, or tao’＞tn-1+ M and tao″＜tn-1+ N, controlling the working frequency of the compressor according to the preset working frequency phin-2Outputting;
wherein, tao"represents the average value of the second external ambient temperature, M represents a preset first judgment temperature, N represents a preset second judgment temperature, and both M and N are less than the preset ambient temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phin-2For the preset environmental temperature interval (t)n-2，tn-1]Corresponding preset working frequency, n is more than or equal to 3Is a positive integer of (1).
8. The method as claimed in claim 6, wherein the step of controlling the operating frequency of the compressor according to the first average value of the external ambient temperature, the second average value of the external ambient temperature and the determination criterion critical point temperature comprises:
when (t)n-1+tn)/2＞tao’＞tn-1+ M and tao″≥tn-1+ N, controlling the working frequency of the compressor according to the preset working frequency phin-1Outputting;
wherein, tao"represents the average value of the second external ambient temperature, M represents a preset first judgment temperature, N represents a preset second judgment temperature, and both M and N are less than the preset ambient temperature interval (t)n-1，tn]Interval temperature interval value of (1), and N < M, phin-1For the preset environmental temperature interval (t)n-1，tn]And n is a positive integer greater than or equal to 2 corresponding to the preset working frequency.
9. A control device for compressor frequency, comprising:
the system comprises an acquisition module (120) for acquiring a first average value of the external environment temperature of an outdoor unit of the air conditioner (10) in a first time interval and a second average value of the external environment temperature in a second time interval, wherein the second time interval is a period of time before the first time interval is ended, and the duration of the second time interval is less than that of the first time interval;
a determining module (130) configured to determine a determination standard critical point temperature according to the first external environment temperature average value, where the determination standard critical point temperature is one of a plurality of critical point temperatures that is close to the first external environment temperature average value and the second external environment temperature average value, and the plurality of critical point temperatures represent end point temperatures of a preset environment temperature interval according to which an operating frequency of a compressor of the outdoor unit is controlled in a refrigeration mode;
and the control module (140) is used for controlling the working frequency of the compressor according to the first external environment temperature average value, the second external environment temperature average value and the judgment standard critical point temperature.
10. An air conditioner, comprising:
a memory (11); and the number of the first and second groups,
a controller (12);
the memory (11) stores a computer program which, when read and executed by the controller (12), implements the method according to any one of claims 1-8.
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| CN113091275B (en) * | 2021-04-08 | 2022-09-06 | 青岛海尔空调器有限总公司 | Preheating method, device and system for air conditioner compressor |
| CN113531774A (en) * | 2021-07-13 | 2021-10-22 | 珠海拓芯科技有限公司 | Air conditioner external ring temperature calculation method and device, air conditioner and computer storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010004761A (en) * | 1999-06-29 | 2001-01-15 | 윤종용 | Frequency control method of a compressor for an inverter air conditioner |
| CN102434943A (en) * | 2011-11-16 | 2012-05-02 | 海信（山东）空调有限公司 | Method for limiting frequency of air condition compressor |
| CN102748275A (en) * | 2012-07-16 | 2012-10-24 | 海信（山东）空调有限公司 | Frequency boundary control method for variable-frequency air conditioner compressor |
| CN103851743A (en) * | 2012-12-05 | 2014-06-11 | 珠海格力电器股份有限公司 | Constant temperature dehumidification control method and system for air conditioner |
| CN104101060A (en) * | 2014-07-25 | 2014-10-15 | 浙江新昌三瑞香雪冲业有限公司 | Energy-saving control method for air conditioner |
| CN107314510A (en) * | 2017-08-21 | 2017-11-03 | 广东美的制冷设备有限公司 | Frequency adjustment method, device and the computer-readable recording medium of frequency-changeable compressor |
-
2018
- 2018-11-27 CN CN201811427745.0A patent/CN109520098B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010004761A (en) * | 1999-06-29 | 2001-01-15 | 윤종용 | Frequency control method of a compressor for an inverter air conditioner |
| CN102434943A (en) * | 2011-11-16 | 2012-05-02 | 海信（山东）空调有限公司 | Method for limiting frequency of air condition compressor |
| CN102748275A (en) * | 2012-07-16 | 2012-10-24 | 海信（山东）空调有限公司 | Frequency boundary control method for variable-frequency air conditioner compressor |
| CN103851743A (en) * | 2012-12-05 | 2014-06-11 | 珠海格力电器股份有限公司 | Constant temperature dehumidification control method and system for air conditioner |
| CN104101060A (en) * | 2014-07-25 | 2014-10-15 | 浙江新昌三瑞香雪冲业有限公司 | Energy-saving control method for air conditioner |
| CN107314510A (en) * | 2017-08-21 | 2017-11-03 | 广东美的制冷设备有限公司 | Frequency adjustment method, device and the computer-readable recording medium of frequency-changeable compressor |
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