CN113154647B - Preheating control method for compressor - Google Patents
Preheating control method for compressor Download PDFInfo
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- CN113154647B CN113154647B CN202110169155.8A CN202110169155A CN113154647B CN 113154647 B CN113154647 B CN 113154647B CN 202110169155 A CN202110169155 A CN 202110169155A CN 113154647 B CN113154647 B CN 113154647B
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- 238000000034 method Methods 0.000 title claims abstract description 74
- 230000001788 irregular Effects 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims description 31
- 238000010792 warming Methods 0.000 claims 2
- 239000010721 machine oil Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000002699 waste material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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Abstract
The invention relates to the technical field of air conditioners, in particular to a preheating control method for a compressor. The invention aims to solve the problems of low control precision and high cost of the existing preheating method of the compressor. To this end, the warm-up control method of the present invention includes: acquiring regular types of the air conditioner used by a user, wherein the regular types comprise regular users and irregular users; when the regular type is regular user, selectively obtaining the predicted starting time of the air conditioner; determining the preheating starting time of the compressor based on the predicted starting time; preheating the compressor based on the preheating starting time; the rule type is determined based on a starting record of a first preset historical time period before the current date of the user. The compressor is preheated according to the rule that the user uses the air conditioner, the control method can improve the control accuracy of preheating the compressor, and preheating cost is saved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a preheating control method for a compressor.
Background
When the air conditioner runs in winter, due to the characteristics of the refrigerating machine oil and the refrigerant, when the outdoor environment temperature is low, the refrigerating machine oil can be solidified, the starting torque of the compressor is increased, and the starting current is overlarge or the starting fails. Even if the compressor is started normally, an effective oil film cannot be formed inside the compressor, so that the abrasion between parts is serious. When the temperature is lower, the refrigerant migration can be arranged at the bottommost part of the compressor, the liquid refrigerant is arranged at the lower part of the refrigerating machine oil, and at the starting moment of the compressor, the liquid refrigerant is arranged on the crankshaft pump instead of lubricating oil, so that the pump bodies cannot be lubricated, and the compressor is easily damaged by liquid impact.
The prior art has mainly solved the above problems by preheating the compressor. For example, an electric heating belt is arranged on a shell of the compressor, and refrigerating machine oil in the compressor is heated through the electric heating belt; further, the compressor is energized to generate heat in the compressor inner coil, thereby heating the refrigerating machine oil or the like. However, in the current technical solution, the control logic for preheating the compressor is simple and rough, and when the air conditioner is powered on, whether to start the preheating function of the compressor is determined by judging the outdoor ambient temperature, and this control method is easy to cause waste of electric energy and is not beneficial to improving the energy efficiency of the air conditioner.
Accordingly, there is a need in the art for a new compressor warm-up control method that solves the above-mentioned problems.
Disclosure of Invention
In order to solve at least one of the above problems in the prior art, that is, to solve the problems of low control precision and high cost of the existing compressor preheating method, the present invention provides a compressor preheating control method, including:
when the outdoor environment temperature is less than or equal to a preset temperature threshold value, acquiring regular types of the air conditioner used by a user, wherein the regular types comprise regular users and irregular users;
when the regular type is regular user, selectively obtaining the predicted starting time of the air conditioner;
determining a preheating starting time of the compressor based on the estimated starting time;
preheating the compressor based on the preheating starting time;
wherein the rule type is determined based on a boot record of a user at a first preset historical period prior to a current date.
In a preferred embodiment of the above compressor warm-up control method, the rule type is determined as follows:
counting the number of starting time periods of the historical starting time of the air conditioner and the number of starting days of the air conditioner in each starting time period based on the starting record;
judging the number of the starting time periods and the preset number, and the number of the starting days and the preset number of days;
when the number of the startup time periods is less than or equal to the preset number and at least one startup day is greater than or equal to the preset number, determining that the user is the regular user;
otherwise, determining the user as the irregular user.
In a preferred embodiment of the above compressor warm-up control method, after the step of "determining that the user is a regular user", the control method further includes:
calculating the average value of all the historical starting-up moments in each starting-up time period;
and determining each average value as the expected starting time.
In a preferred embodiment of the above method for controlling preheating of a compressor, the step of selectively obtaining the expected starting time of the air conditioner when the regular type is regular user further comprises:
when the rule type is a rule user, further judging whether the air conditioner is started up in a second preset historical time period before the current date;
if the air conditioner is started within the second preset historical time period, acquiring the expected starting time of the air conditioner;
if the air conditioner is not started within the second preset historical time period, not obtaining the expected starting time of the air conditioner;
wherein the length of the second preset history period is less than the length of the first preset history period.
In a preferred embodiment of the aforementioned compressor warm-up control method, "determining a warm-up start time of the compressor based on the predicted start-up time" further includes:
and determining the moment corresponding to a first preset time before the expected starting moment as the preheating starting moment of the compressor.
In a preferable embodiment of the above compressor warm-up control method, the control method further includes:
when the regular type is an irregular user or the air conditioner is not started in the second preset historical time period, preheating the compressor after receiving a starting signal;
and when the preheating time of the compressor reaches a second preset time, controlling the compressor to start to operate.
In a preferred embodiment of the above method for controlling preheating of the compressor, the step of "preheating the compressor" further includes:
determining preheating power based on the outdoor environment temperature;
controlling the coil of the compressor to be electrified and to operate at the preheating power.
In a preferred embodiment of the above compressor preheating control method, after the step of "controlling the coil of the compressor to operate at the preheating power", the control method further includes:
acquiring the winding temperature of the coil;
judging the sizes of the coiling temperature and the coiling temperature threshold;
and when the winding temperature is greater than or equal to the winding temperature threshold value, controlling the coil to stop electrifying until the winding temperature is reduced to the restart temperature or the time length for stopping electrifying the coil reaches a third preset time length.
In a preferred embodiment of the above compressor preheating control method, after the step of "preheating the compressor", the control method further includes:
judging whether the air conditioner is started or not;
when the air conditioner is started, recording the current starting time of the air conditioner;
and updating the rule type based on the current starting-up time.
In a preferred embodiment of the above method for controlling preheating of a compressor, at least the determination and the update of the rule type and the determination of the expected startup time are performed by a server connected to the air conditioner.
As can be understood by those skilled in the art, in a preferred embodiment of the present invention, the compressor warm-up control method includes: when the outdoor environment temperature is less than or equal to a preset temperature threshold value, acquiring regular types of the air conditioner used by a user, wherein the regular types comprise regular users and irregular users; when the regular type is regular user, selectively obtaining the predicted starting time of the air conditioner; determining the preheating starting time of the compressor based on the predicted starting time; preheating the compressor based on the preheating starting time; the rule type is determined based on a starting record of a first preset historical time period before the current date of the user.
Through when outdoor ambient temperature is less than or equal to the preset temperature threshold value, the compressor is preheated based on the rule that the user uses the air conditioner, the control method can improve the control accuracy of preheating the compressor, and the preheating cost is saved. Specifically, the rule type that the user used the air conditioner is determined through the start-up record based on the first preset historical period before the current date of the user, the air conditioner usage rule and the habit of the user in a recent period of time can be accurately reflected, thereby the compressor is controlled to be purposefully preheated according to the usage habit of the user, compared with the technical scheme that whether the compressor is preheated is judged only through the outdoor environment temperature in the prior art, the preheating precision can be greatly improved, unnecessary energy waste is reduced, once the compressor is preheated, the air conditioner usage demand of the user can be accurately corresponded, and the user experience is improved.
Further, the usage rule of the user is determined based on the number of the starting periods of the historical starting time in the starting record and the starting days of each starting period, and the control method can effectively distinguish whether the air conditioner used by the user is regular or not based on the starting record so as to preheat the compressor in advance based on the usage rule of the user in regular time.
Furthermore, the average value of a plurality of historical starting-up moments of each starting-up time period is used as the estimated starting-up moment, so that the starting-up rule of a user in the time period can be well reflected, the compressor is preheated in advance, and the balance between the preheating effect and the energy-saving effect is ensured.
Further, whether the air conditioner is started in a second preset historical time period or not is further judged, so that whether the air conditioner is started in the last few days or not can be reflected, the compressor is preheated when the air conditioner is used in the last few days, and the compressor is prevented from being damaged; and when the air conditioner is not used in recent days, the compressor is not preheated, so that the energy loss is reduced.
Further, when the user uses the air conditioner irregularly or the air conditioner is not started in a second preset historical time period, the compressor is preheated only when the starting signal is received, and energy waste caused by the fact that the starting time of the user cannot be accurately estimated can be prevented.
Further, through confirming preheating power based on outdoor ambient temperature, then the coil circular telegram of control compressor and with preheating power operation, this application can also improve preheating efficiency based on outdoor temperature adjustment compressor coil's circular telegram power, avoids the energy extravagant.
Furthermore, by judging the winding temperature and the size of the winding temperature threshold value, the energization of the coil is stopped when the winding temperature is too high, so that the coil of the compressor can be prevented from being overheated, and the compressor can be effectively protected.
Furthermore, whether the air conditioner is started or not is judged after the compressor is preheated, and the current starting time is recorded and the rule types are updated when the air conditioner is started.
Furthermore, the server is used for determining and updating the rule type and determining the expected starting time, so that the acquisition cost of a user can be reduced, and the operation speed of the method can be improved.
Drawings
The compressor warm-up control method of the present invention is described below with reference to the accompanying drawings. In the drawings:
FIG. 1 is a flow chart of a compressor warm-up control method of the present invention;
FIG. 2 is a system diagram of the air conditioning system of the present invention;
fig. 3 is a logic diagram of a compressor warm-up control method of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the following embodiments describe each step as a sequential order, those skilled in the art can understand that, in order to achieve the effect of the present embodiments, different steps need not be executed in such an order, and they may be executed simultaneously (in parallel) or in an inverse order, and these simple variations are within the scope of the present invention.
As described in the background art, the preheating logic of the compressor is simple and rough at present, and the compressor can be preheated based on the outdoor environment temperature as long as the air conditioner is powered on, which is a great waste of electric energy and does not use the implementation of energy conservation and emission reduction. Therefore, the preheating control method of the compressor is provided, the compressor is preheated according to the rule that the user uses the air conditioner, the preheating control accuracy of the compressor can be improved, and the preheating cost is saved.
First, referring to fig. 1 and 2, a compressor warm-up control method of the present invention will be described. Wherein, fig. 1 is a flow chart of a compressor preheating control method of the present invention; fig. 2 is a system diagram of an air conditioning system of the present invention.
Referring first to fig. 2, the air conditioning system of the present invention includes an air conditioner and a server, and the air conditioner is capable of communicating with the server. Preferably, the air conditioner can perform bidirectional communication with the server through communication modes such as a wide area network, a local area network, wiFi, 3G/4G/5G and the like. For example, the air conditioner uploads the acquired parameters to the server, and the server issues control instructions and data to the air conditioner. The above communication modes and interaction modes are common in the art and are not described herein again.
The learning module is arranged in the server and can summarize habits of users in using the air conditioner based on a period of startup records uploaded by the air conditioner, then the analysis result determines regular types of the users in using the air conditioner, and determines predicted startup time of the users when the regular types are regular users, and then the regular types and the predicted startup time are issued to the air conditioner, so that the air conditioner controls the compressor to preheat based on the received data. The specific analysis process will be described in the following method.
Referring next to fig. 1, a compressor warm-up control method of the present application will be described.
As shown in fig. 1, in order to solve the problems of low control accuracy and high cost of the existing compressor preheating method, the compressor preheating control method of the present application mainly includes:
s101, when the outdoor environment temperature is less than or equal to a preset temperature threshold value, acquiring the regular type of the air conditioner used by a user; for example, the preset temperature threshold may be 10 ℃, the air conditioner may obtain the outdoor ambient temperature based on a temperature sensor, or the server may obtain the outdoor ambient temperature based on a local weather forecast issued by a network; when the outdoor environment temperature is less than or equal to the preset temperature threshold, the refrigerating machine oil in the compressor is easy to solidify, so that the compressor cannot be normally started, at the moment, the regular type of the air conditioner used by a user needs to be acquired, and the compressor is selectively preheated based on the regular type. The regular type specifically includes a regular user and an irregular user, and is determined based on a power-on record of the user in a first preset historical period before the current date, such as a power-on record of the user in two weeks before the current date. For example, the air conditioner records the starting time when the air conditioner is started and uploads the starting time to the server, the server analyzes and determines whether the air conditioner is used regularly by a user through collected starting records of two weeks, the regular user is determined when the regular user is regular, and the irregular user is determined when the regular user is irregular.
The preset temperature threshold is not always the same, and the specific setting is related to the type of compressor and the type of refrigerating machine oil used, and can be adjusted by those skilled in the art.
S103, when the regular type is a regular user, selectively acquiring the expected starting time of the air conditioner; for example, when the regular type is regular user, it is proved that the user has formed a certain usage habit when using the air conditioner in the last two weeks, and at this time, the expected startup time of the user can be obtained based on the usage habit analysis, so as to determine the possible startup time of the user.
S105, determining the preheating starting time of the compressor based on the expected starting time; for example, after the predicted power-on time is determined, a certain time point before the predicted power-on time is determined as the warm-up start time.
S107, preheating the compressor based on the preheating starting moment; for example, when the current time reaches the preheating start time, the preheating of the compressor is started; the preheating mode can be electric heating belt preheating or compressor coil electrifying preheating.
Through when outdoor ambient temperature is less than or equal to the preset temperature threshold value, the compressor is preheated based on the rule that the user uses the air conditioner, the control method can improve the control accuracy of preheating the compressor, and the preheating cost is saved. Specifically, the rule type that the user used the air conditioner is determined through the start-up record based on the first preset historical period before the current date of the user, the air conditioner usage rule and the habit of the user in a recent period of time can be accurately reflected, thereby the compressor is controlled to be purposefully preheated according to the usage habit of the user, compared with the technical scheme that whether the compressor is preheated is judged only through the outdoor environment temperature in the prior art, the preheating precision can be greatly improved, unnecessary energy waste is reduced, once the compressor is preheated, the air conditioner usage demand of the user can be accurately corresponded, and the user experience is improved.
The compressor warm-up control method of the present application is described in detail below.
In one possible embodiment, the regular type of air conditioner used by the user is determined by:
counting the number of starting time periods of the historical starting time of the air conditioner and the starting days of the air conditioner in each starting time period based on the starting record of a first preset historical time period before the current date of a user; judging the number of the startup time periods and the size of the preset number, and the number of startup days and the size of the preset number of days; when the number of the startup time periods is less than or equal to the preset number and at least one startup day is more than or equal to the preset number of days, determining that the user is a regular user; otherwise, determining the user as an irregular user.
For example, referring to table 1, table 1 shows a boot record of an air conditioner over the past two weeks, which can be obtained by the air conditioner and uploaded to a server for subsequent analysis and determination. As can be seen from table 1, the air conditioner has a startup record from 18 days 2 and 2019 and 23 days 2 and 2019, and the historical startup time of the air conditioner is distributed in a plurality of time intervals. For example, the historical power-on time is 07 in table 1 below, then the historical power-on time is 7 points, and the historical power-on times 20 in table 1 below are 20 points.
TABLE 1 Start-up recording table for air conditioner in past two weeks
| Date | Historical boot time | Date of day | Historical boot time |
| 2019/02/23 | 07:12:12 | 2019/02/18 | 19:16:10 |
| 2019/02/22 | 06:54:13 | 2019/02/23 | 20:12:12 |
| 2019/02/21 | 06:31:13 | 2019/02/22 | 20:54:13 |
| 2019/02/20 | 06:46:13 | 2019/02/21 | 20:31:13 |
| 2019/02/23 | 16:12:12 | 2019/02/20 | 20:46:13 |
| 2019/02/22 | 18:39:13 | 2019/02/19 | 20:39:13 |
| 2019/02/21 | 18:54:13 | 2019/02/18 | 20:16:10 |
| 2019/02/20 | 18:46:13 | 2019/02/18 | 20:32:10 |
| 2019/02/19 | 19:31:13 |
Referring next to table 2, table 2 shows the comparison relationship between the boot-up time period and the expected boot-up time determined after the statistics and calculations of the boot-up records in table 1. According to the corresponding relation between the historical starting time and the starting time period, the number of the starting time periods of the historical starting time of the air conditioner and the starting days of the air conditioner in each starting time period can be obtained through statistics. As can be seen from table 2, the historical booting periods of the users in the past two weeks are 6, respectively at 6 o 'clock, 7 o' clock, 16 o 'clock, 18 o' clock, 19 o 'clock and 20 o' clock, where the booting days in each booting period are: 6 o 'clock for 3 days, 7 o' clock for 1 day, 16 o 'clock for 1 day, 18 o' clock for 3 days, 19 o 'clock for 2 days, 20 o' clock for 6 days. In the statistical process, if there are records of multiple historical boot-up times in the same boot-up period in the same day, the multiple historical boot-up times are classified into one day, as 20.
TABLE 2 comparison of boot-up time and expected boot-up time
After the number of the boot time periods in which the historical boot time is located and the number of boot days of each boot time period are obtained, the server further judges the number of the boot time periods and the size of the preset number, and the number of the boot days and the size of the preset number of days; in the present application, the preset number may be 6, the preset number of days may be 4, and it can be seen from table 2 that the number of the startup periods of the users in the past two weeks is equal to 6, and the startup days of the user in the startup period at 20 points are 6 days and greater than the preset number of days by 4 days, so that it can be determined that the user is a regular user, that is, the time period in which the user uses the air conditioner in the past two weeks is concentrated, and the time period at least at 20 points uses the air conditioner regularly. Otherwise, if any one of the two judgment conditions is not met, the user is determined to be an irregular user, that is, the time intervals of using the air conditioner by the user in the last two weeks are not concentrated, and/or the number of times of using the air conditioner in each time interval is not large, so that the use habit of the user cannot be accurately learned.
Of course, the setting manner of the first preset historical period, the preset number and the preset number of days is only an example, and a person skilled in the art may adjust the first preset historical period, the preset number and the preset number of days based on the actual application scenario, and the adjustment does not deviate from the principle of the present application. For example, the first preset historical period may also be one week, one month, one half year, etc., the preset number may also be 3, 5, 7, 8, etc., and the preset number of days may also be 6, 8, 9, etc.
Further, in order to make the determination result more accurately reflect the usage habit of the user, a person skilled in the art may further perform fine adjustment on the determination rule on the premise that the principle is not changed, for example, the determination of the rule type may be performed after the boot time period in which the boot days are only one day is removed from table 2.
The usage rule of the user is determined based on the number of the starting periods of the historical starting time in the starting record and the starting days of each starting period, and the control method can effectively distinguish whether the user uses the air conditioner or not based on the starting record so as to preheat the compressor in advance based on the usage rule of the user in a regular time.
In one possible embodiment, after the step of "determining that the user is a regular user", the control method further includes:
calculating the average value of all historical starting-up moments in each starting-up time period; each mean value is determined as the expected boot time. For example, still referring to table 2, after determining that the regular type of the air conditioner used by the user is a regular user, the server may further calculate, based on each startup period, an average of historical startup times of the period as an expected startup time of the startup period.
Of course, calculating the average value is only an example, and those skilled in the art may also use other calculation methods to calculate the predicted boot-up time, for example, a weighted average method is used for dividing a plurality of historical boot-up time zones.
Of course, in order to improve the control accuracy, those skilled in the art may also perform fine adjustment on the rule for determining the predicted boot time without changing the principle, for example, only the boot time period with the number of boot days greater than or equal to 3 days in table 2 may be used as the reference for calculating the predicted boot time, and the boot time period with the boot time less than 3 days may be eliminated. That is, the boot period with the number of boot days greater than or equal to 3 days is taken as the period in which the user has formed a rule, and the boot period with the number of boot days less than 3 days is not considered because of the small number.
By using the average value of a plurality of historical starting moments of each starting time period as the predicted starting moment, the starting rule of a user in the time period can be well reflected, so that the compressor is preheated in advance, and the balance between the preheating effect and the energy-saving effect is ensured.
In a possible implementation, the step S103 further includes:
when the rule type is a rule user, further judging whether the air conditioner is started up in a second preset historical time period before the current date; if the air conditioner is started within a second preset historical time period, acquiring the expected starting time of the air conditioner; if the air conditioner is not started in a second preset historical time period, the expected starting time of the air conditioner is not obtained; in the present application, the length of the second preset history period is smaller than the length of the first preset history period.
For example, the second preset historical time period may be one week, that is, after the regular type of the user is judged to be a regular user by using the start-up records of the last two weeks, the server further judges whether the user has a start-up record by using the start-up record of the last one week, if so, the server proves that the user still regularly uses the air conditioner in the last one week, at this time, the expected start-up time of the air conditioner may be obtained, and the compressor is preheated at the preheating start time determined based on the expected start-up time; if not, it is proved that the user may not use the air conditioner in the last week due to the reason of going out, the indoor temperature rising, etc., and the predicted starting time may not be obtained, i.e., the compressor is not preheated in advance.
Of course, the specific value of the second preset history period is only used for illustrating the principle of the present application, and it is not always the same, and those skilled in the art can adjust the specific value on the premise that the specific value is smaller than the first preset history period. For example, the second preset historical period may also be 3 days, 5 days, 10 days, etc.
Whether the air conditioner is started in the second preset historical time period or not is further judged, so that whether the air conditioner is started in the last few days or not can be reflected, the compressor is preheated in the last few days when the air conditioner is used, and the compressor is prevented from being damaged; and when the air conditioner is not used in recent days, the compressor is not preheated, so that the energy loss is reduced.
In a possible implementation, the step S105 further includes:
and determining the moment corresponding to the first preset time before each expected starting moment as the preheating starting moment of the compressor. For example, the first preset time period may be 1 hour, that is, after the plurality of predicted startup time periods are determined, the time point corresponding to 1 hour before each predicted startup time period is taken as the preheating start time of the compressor.
In one possible embodiment, the compressor warm-up control method further includes:
when the regular type is an irregular user or the air conditioner is not started in a second preset historical time period, preheating the compressor after receiving a starting signal; and when the preheating time of the compressor reaches a second preset time, controlling the compressor to start to operate.
For example, the second preset time period may be 10min, when the rule type of the user is an irregular user, it is proved that the user does not have a special rule when using the air conditioner, and at this time, preheating the compressor according to the historical starting time of the user using the air conditioner easily causes waste of energy; when the air conditioner is not started within the second preset historical time period, the fact that the user has no habit of starting the air conditioner within a recent time period proves that the compressor is not suitable for being preheated. At the moment, whether a starting signal is received or not is judged, and the compressor is preheated after the starting signal is received. And when the preheating time of the compressor reaches 10min, stopping preheating, and starting the compressor to enable the air conditioner to normally operate.
When the user uses the air conditioner irregularly or the air conditioner is not started in the second preset historical time period, the compressor is preheated only when the starting signal is received, and energy waste caused by the fact that the starting time of the user cannot be accurately estimated can be prevented.
In one possible embodiment, the step of "preheating the compressor" further comprises:
determining preheating power based on the outdoor environment temperature; the coil of the compressor is controlled to be energized and run at preheat power.
For example, the preheating may be performed based on a preheating start time or may be performed by controlling the energization of the compressor coil after receiving a power-on command. The specific principle of preheating the refrigerating machine oil by energizing the compressor coil belongs to the conventional technical means in the field, and is not described herein again. Further, before power-on, the preheating power is determined based on the outdoor ambient temperature, for example, taking preheating after receiving a power-on command as an example, the preheating power may be determined by the following formula (1):
W＝k×T ao +b (1)
in the formula (1), W is preheating power, T ao The outdoor ambient temperature is shown, and k and b are coefficients. Where k and b can be fit based on experimental data. For example, the compressor was subjected to multiple heating experiments for different outdoor ambient temperatures. In multiple experiments, the power of the compressor is set so that the mobility of the refrigerating machine oil in the compressor reaches a better level within 10min, the power of the compressor at each outdoor environment temperature is recorded at the moment, a linear relation between the preheating power and the outdoor environment temperature is established, and the coefficients k and b are determined based on the linear relation.
Of course, the determination of the preheating power may also be performed based on other relationships between the outdoor ambient temperature and the preheating power, such as the fixed correspondence between the outdoor ambient temperature and the preheating power. If a relation comparison table between the outdoor environment temperature and the preheating power is determined based on tests, and the comparison table is stored in the air conditioner, the preheating power corresponding to the outdoor environment temperature can be determined by using the comparison table.
Of course, the preheating power when the regular user performs preheating is similar to the above determination mode, and is not described again here.
Through confirming preheating power based on outdoor ambient temperature, then the coil circular telegram of control compressor and with preheating power operation, this application can also improve preheating efficiency based on outdoor temperature adjustment compressor coil's circular telegram power, avoids the energy extravagant.
In one possible embodiment, after the step of "controlling the coil of the compressor to operate at the preheating power", the control method further includes:
acquiring the winding temperature of a coil; judging the winding temperature and the winding temperature threshold value; and when the winding temperature is greater than or equal to the winding temperature threshold value, controlling the coil to stop electrifying until the winding temperature is reduced to the restart temperature or the time for stopping electrifying the coil reaches a third preset time.
For example, in the preheating process of the compressor, since the compressor coil is preheated by electrifying the compressor coil, the compressor coil is at risk of being damaged when the temperature is raised to a limit value, at the moment, the winding temperature of the coil is obtained through the temperature sensor, the winding temperature and the winding temperature threshold are judged, when the winding temperature is greater than the winding temperature threshold, the coil is controlled to stop electrifying, the winding temperature of the coil is continuously monitored or the electrifying stopping time is accumulated, and when the winding temperature is lowered to the starting temperature or the electrifying stopping time of the coil reaches a third preset time, the coil is controlled to be electrified again. And the process is circulated. The winding temperature threshold may be an upper limit value of the winding temperature, or may be a certain temperature value close to the upper limit value, and the determination of the temperature value is related to the material grade of the coil, and a person skilled in the art may specifically determine the temperature value based on the material grade of the coil, which is not limited in this application.
By judging the winding temperature and the winding temperature threshold value, the energization of the coil is stopped when the winding temperature is overhigh, so that the coil of the compressor can be prevented from being overheated, and the compressor can be effectively protected.
In one possible embodiment, the control method further includes:
judging whether the air conditioner is started; when the air conditioner is started, recording the current starting time of the air conditioner; and updating the rule type based on the current starting-up time.
For example, when the air conditioner is started, the air conditioner automatically records the current starting time and uploads the current starting time to the server, and the server determines the step updating rule type according to the rule type based on the current starting time.
By judging whether the air conditioner is started after the compressor is preheated and recording the current starting time and updating the rule type when the air conditioner is started, the control method can also realize the real-time updating of the habit of the user, thereby improving the prediction accuracy of the starting time and ensuring the use experience of the user.
In one possible embodiment, at least the determination of the type of law, the updating and the determination of the expected start-up time are carried out by a server connected to the air conditioner. For example, the server determines and updates the regular type based on the startup record uploaded by the air conditioner, determines the expected startup time based on the regular type when the regular type is a regular user, and transmits the regular type and the expected startup time to the air conditioner.
By using the server to realize the determination and the update of the rule types and the determination of the expected startup time, the method and the device can also reduce the acquisition cost of the user and improve the operation speed of the method.
It should be noted that although the detailed steps of the method of the present invention have been described in detail, those skilled in the art can combine, separate and change the order of the above steps without departing from the basic principle of the present invention, and the modified technical solution does not change the basic concept of the present invention and thus falls into the protection scope of the present invention.
One possible implementation of the present application is described below with reference to fig. 3. Wherein, fig. 3 is a logic diagram of the compressor preheating control method of the present invention.
As shown in fig. 3, in a possible implementation, step S201 is first executed, and the air conditioner obtains and determines the outdoor environment temperature T ao When the temperature is less than or equal to 10 ℃, acquiring the rule type of the user;
after acquiring the regular type of the user, executing step S203, and determining whether the regular type of the air conditioner used by the user is a regular user; if so, step S205 is performed, otherwise step S223 is performed.
S205, judging whether the air conditioner is started in the last week of the user; if so, step S207 is performed, otherwise step S223 is performed.
S207, obtaining the predicted starting time t n Then, step S209 is performed.
S209, based on the predicted boot time t n Calculating the preheating start time t s ＝t n -1 (h) based on outdoor ambient temperature T ao Calculating preheating power W = k × T of coil ao +b。
After calculating the preheating start time and the preheating power, step S211 is executed to determine whether the current time reaches the preheating start time t s If yes, step S213 is executed, otherwise, the process returns to step S211, and it is repeatedly determined whether the current time reaches the preheating start time.
S213, controlling the compressor coil to be electrified according to the preheating power W to preheat the compressor.
In the process of preheating the compressor, step S215 is executed to determine whether a startup signal is received, if so, step S217 is executed, otherwise, step S219 is executed.
And S217, controlling the compressor to start and normally operating the air conditioner.
S219, further judging the winding temperature T of the coil i Whether or not less than the winding temperature threshold c, i.e. T i If < c is true; if yes, the process returns to step S213, otherwise step S221 is performed.
S221, the compressor coil is controlled to stop energization, and the process returns to step S219.
S223, judging whether a starting signal is received, if so, executing the step S225, otherwise, ending the program;
s225, based on the outdoor environment temperature T ao Calculating preheating power W = k × T of coil ao + b, and then controlling the compressor coil to be electrified according to the preheating power W to preheat the compressor.
In the preheating process of the compressor, step S227 is executed, and whether the preheating time t is more than or equal to a second preset time period for 10min is judged, namely t is more than or equal to 10min; if so, step S229 is executed, otherwise, step S225 is executed back.
And S229, controlling the compressor to start and normally operating the air conditioner.
Finally, it should be noted that, although the specific embodiment of the above-mentioned compressor warm-up control method is described in the context of the server communicating with the air conditioner and performing some of the steps separately, this is not intended to limit the scope of the present application, and in other ways, one, more, or even all of the steps performed by the server may be implemented by the air conditioner. Of course, one or more of the steps of the control method performed by the air conditioner may also be implemented by the server, which is not limited in this application as long as the control method of the present application can be implemented by the air conditioner or a combination of the air conditioner and the server.
For example, all the control steps of the present application may be independently performed by the air conditioner; for another example, in addition to the determination and update of the regular type and the determination of the predicted startup time, the steps of obtaining the regular type of the air conditioner used by the user, obtaining the predicted startup time, determining the preheating start time, determining whether the air conditioner is started up in the second preset history period, determining the preheating power based on the outdoor environment temperature, and the like may also be executed by the server.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (8)
1. A compressor warm-up control method, characterized by comprising:
when the outdoor environment temperature is less than or equal to a preset temperature threshold value, acquiring regular types of the air conditioner used by a user, wherein the regular types comprise regular users and irregular users;
when the regular type is regular user, selectively obtaining the predicted starting time of the air conditioner;
determining a preheating starting time of the compressor based on the estimated starting time;
preheating the compressor based on the preheating starting time;
the rule type is determined based on a starting record of a user in a first preset historical time period before the current date;
the rule type is determined as follows:
counting the number of starting time periods of the historical starting time of the air conditioner and the number of starting days of the air conditioner in each starting time period based on the starting record;
judging the number of the starting time periods and the preset number, and the number of the starting days and the preset number of days;
when the number of the startup time periods is less than or equal to the preset number and at least one startup day is greater than or equal to the preset number, determining that the user is the regular user;
otherwise, determining the user as the irregular user;
the step of selectively obtaining the expected turn-on time of the air conditioner when the regular type is a regular user further includes:
when the rule type is a regular user, further judging whether the air conditioner is started up in a second preset historical time period before the current date;
if the air conditioner is started within the second preset historical time period, acquiring the expected starting time of the air conditioner;
if the air conditioner is not started within the second preset historical time period, not obtaining the expected starting time of the air conditioner;
wherein the length of the second preset history period is less than the length of the first preset history period.
2. The compressor warm-up control method as claimed in claim 1, wherein after the step of determining the user as a regular user, the control method further comprises:
calculating the average value of all the historical starting-up moments in each starting-up time period;
and determining each average value as the expected starting time.
3. The compressor warm-up control method as claimed in claim 1, wherein the step of determining a warm-up start timing of the compressor based on the predicted start-up timing further comprises:
and determining the moment corresponding to a first preset time before the expected starting moment as the preheating starting moment of the compressor.
4. The compressor warm-up control method as claimed in claim 1, further comprising:
when the regular type is an irregular user or the air conditioner is not started within the second preset historical time period, preheating the compressor after receiving a starting signal;
and when the preheating time of the compressor reaches a second preset time, controlling the compressor to start to operate.
5. The compressor warm-up control method according to claim 1 or 4, wherein the step of "warming up the compressor" further includes:
determining preheating power based on the outdoor environment temperature;
controlling the coil of the compressor to be electrified and to operate at the preheating power.
6. The compressor warm-up control method as claimed in claim 5, wherein after the step of controlling the coil of the compressor to operate at the warm-up power, the control method further comprises:
acquiring the winding temperature of the coil;
judging the sizes of the coiling temperature and the coiling temperature threshold;
and when the winding temperature is greater than or equal to the winding temperature threshold value, controlling the coil to stop electrifying until the winding temperature is reduced to the restart temperature or the time length for stopping electrifying the coil reaches a third preset time length.
7. The compressor warm-up control method as claimed in claim 1, wherein after the step of "warming up the compressor", the control method further comprises:
judging whether the air conditioner is started;
when the air conditioner is started, recording the current starting time of the air conditioner;
and updating the rule type based on the current starting-up time.
8. The compressor warm-up control method according to claim 7, wherein at least the determination, the update of the rule type and the determination of the predicted turn-on time are performed by a server connected to the air conditioner.
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| CN202110169155.8A CN113154647B (en) | 2021-02-07 | 2021-02-07 | Preheating control method for compressor |
| PCT/CN2021/114465 WO2022068472A1 (en) | 2021-02-07 | 2021-08-25 | Compressor preheating control method |
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| CN113154647B (en) * | 2021-02-07 | 2023-02-17 | 青岛海尔空调器有限总公司 | Preheating control method for compressor |
| CN114353262B (en) * | 2021-12-21 | 2023-08-15 | 青岛海尔空调电子有限公司 | Control method and device for liquid impact fault of air conditioner compressor and air conditioner |
| CN116255723A (en) * | 2023-03-30 | 2023-06-13 | 广东开利暖通空调股份有限公司 | Control method and device for preheating function of air conditioner, computer equipment and storage medium |
| CN116379657A (en) * | 2023-04-07 | 2023-07-04 | 青岛海尔空调器有限总公司 | Preheating control method, device, equipment and storage medium for air conditioner compressor |
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