CN114992795A - Control method and control device of compressor, air conditioner and readable storage medium - Google Patents
Control method and control device of compressor, air conditioner and readable storage medium Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000001704 evaporation Methods 0.000 claims abstract description 100
- 230000008020 evaporation Effects 0.000 claims abstract description 83
- 230000005494 condensation Effects 0.000 claims abstract description 56
- 238000009833 condensation Methods 0.000 claims abstract description 56
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 10
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
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- 239000013307 optical fiber Substances 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
- F24F11/70—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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- 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
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method and a control device of a compressor, an air conditioner and a readable storage medium, comprising the following steps: detecting the evaporation temperature of an evaporator when the air conditioner operates; calculating to obtain the upper limit value of the condensation temperature of the heat exchanger according to the evaporation temperature; and controlling and adjusting the running state of the compressor according to the upper limit value of the condensation temperature and the evaporation temperature. The invention solves the problem of how to ensure the normal operation of the compressor all the time.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device of a compressor, an air conditioner and a readable storage medium.
Background
With the development of air conditioners, when the air conditioners are operated, in order to ensure the operation reliability of the compressors, multiple protection measures are generally designed to prevent the compressors from operating for a long time under the conditions of high current, high temperature and high pressure. However, in addition to the reliability problem of the compressor caused by the overhigh pressure, if the high pressure is not very high but the low pressure is abnormally low, the compression ratio is abnormally increased, and when the compressor is operated for a long time under the abnormally high compression ratio, the crankshaft of the compressor is twisted and eccentric due to the acting force generated by the high pressure ratio, the crankshaft of the compressor is eccentrically worn, and finally the compressor is blocked and cannot operate.
Therefore, how to ensure that the compressor always works normally becomes a problem which needs to be solved urgently.
Disclosure of Invention
The invention solves the problem of how to ensure the compressor to always work normally.
In order to solve the above problems, the present invention provides a method for controlling a compressor, including: detecting the evaporation temperature of an evaporator when the air conditioner operates; calculating to obtain the upper limit value of the condensation temperature of the heat exchanger according to the evaporation temperature; and controlling and adjusting the running state of the compressor according to the upper limit value of the condensation temperature and the evaporation temperature.
Compared with the prior art, the effect that this scheme can reach: in a specific embodiment, the evaporation pressure corresponding to the evaporation temperature at this time is calculated according to the evaporation temperature, the condensation pressure corresponding to the condenser at this time is calculated according to the evaporation pressure, the corresponding condensation temperature is calculated according to the condensation pressure, the calculated condensation temperature at this time is the upper limit value of the condensation temperature, the upper limit value of the condensation temperature affects each determination value, that is, each determination value is changed according to the upper limit value of the condensation temperature, for example, each determination value is reduced according to the upper limit value of the condensation temperature, so that when the compressor meets smaller determination conditions, the state of the compressor can be adjusted, and the compressor can always work normally.
In one embodiment of the present invention, calculating the upper limit value of the condensing temperature of the heat exchanger according to the evaporating temperature includes: calculating a condensation temperature upper limit value according to a formula T1-K1-T2 + K2; wherein, T1 is the upper limit value of the condensation temperature, T2 is the evaporation temperature, and K1 and K2 are constants.
Compared with the prior art, the effect that this scheme can reach: through this functional relation then can know not through the experiment test, under each different evaporating temperature, the condensing temperature upper limit value that corresponds for the acquisition of condensing temperature upper limit value is comparatively convenient, thereby adjusts the compressor through the evaporating temperature that this condensing temperature upper limit value cooperation corresponds, makes the compressor carry out normal work under the highest compression ratio that the compressor specification stipulates all the time.
In one embodiment of the present invention, the controlling and adjusting the operation state of the compressor according to the upper limit value of the condensing temperature and the evaporating temperature comprises: judging whether the upper limit value of the condensation temperature meets a first preset temperature or not; if the judgment result is yes, controlling the compressor to adjust according to the comparison result of the evaporation temperature and the first judgment condition; if not, controlling the compressor to adjust according to a comparison result of the evaporation temperature and a second judgment condition; wherein, the first judgment condition and the second judgment condition have different values.
Compared with the prior art, the effect that this scheme can reach: and judging whether the upper limit value of the condensation temperature meets a first preset temperature as a precondition for actually adjusting the state of the compressor, so that the control method in the embodiment can more accurately control the compressor.
In one embodiment of the present invention, the first determination condition includes: a plurality of first temperature determination threshold values that gradually increase along a temperature increase direction; and/or, the second determination condition comprises: a plurality of second temperature determination threshold values that gradually increase along the temperature increase direction; wherein the plurality of first temperature determination threshold values are greater than the plurality of second temperature determination threshold values.
Compared with the prior art, the effect that this scheme can reach: when the evaporation pressure of the compressor is abnormally low, the evaporation temperature is low, and the operation state of the compressor can be adjusted according to the judgment results of the evaporation temperature and the second temperature judgment threshold value, so that the control method in the embodiment is more accurate.
In one embodiment of the present invention, controlling the compressor to adjust according to the comparison result of the evaporating temperature and the first determination condition includes: when T2 is more than or equal to A, controlling the compressor to stop running; when B is not more than T2 and is more than A, controlling the compressor to perform frequency reduction adjustment at the speed of V1; when C is not more than T2 and B is less than B, controlling the compressor to perform frequency reduction adjustment at the speed of V2; when D is not more than T2 and C is less than C, the compressor is controlled to prohibit frequency rising; when T2 < D, controlling the compressor to operate at a normal frequency; wherein A, B, C, D is a plurality of preset temperatures with different values, T2 is an evaporation temperature, V1 is greater than V2, and the normal frequency is the frequency of the normal operation of the compressor.
Compared with the prior art, the effect that this scheme can reach: by setting a plurality of different preset temperatures, the compressor in the embodiment can determine the adjustment required to be performed more accurately through the evaporation temperature.
In one embodiment of the present invention, controlling the compressor to adjust according to the comparison result of the evaporating temperature and the second determination condition includes: when T2 is more than or equal to A1, controlling the compressor to stop running; when B1 is not less than T2 is more than A1, the compressor is controlled to perform down-conversion adjustment at the speed of V1; when the C1 is not less than T2 is less than B1, the compressor is controlled to perform frequency reduction adjustment at the speed of V2; when D1 is not less than T2 is less than C1, the compressor is controlled to prohibit frequency increase; when T2 < D1, controlling the compressor to operate at a normal frequency; wherein A1, B1, C1 and D1 are a plurality of preset temperatures with different values, A1 is less than A, B1 is less than B, C1 is less than C, and D1 is less than D.
Compared with the prior art, the effect that this scheme can reach: through setting for a plurality of different preset temperatures, the compressor in the embodiment can determine the adjustment required to be carried out more accurately through the evaporation temperature, meanwhile, because A1 is less than A, B1 is less than B, C1 is less than C, D1 is less than D, when the upper limit value T1 of the condensation temperature is less than the frequency limiting temperature D, the evaporation temperature is lower at the moment, and the use state of the compressor can be controlled and adjusted more accurately through the judgment method in the embodiment.
In one embodiment of the present invention, a1 ═ a- (D-T1); b1 ═ B- (D-T1); c1 ═ C- (D-T1); d1 ═ T1; wherein T1 is the upper limit value of the condensation temperature, and D is more than T1.
Compared with the prior art, the effect that this scheme can reach: the value calculation mode of a1, B1, C1, and D1 in this embodiment is an empirical value obtained by multiple experimental evidence calculation, and the accuracy of the control method in this embodiment can be further ensured by the value calculation mode in this embodiment.
In one embodiment of the present invention, there is provided a control apparatus of a compressor, including: the detection module is used for detecting the evaporation temperature of the evaporator when the air conditioner operates; the calculation module is used for calculating and obtaining the upper limit value of the condensation temperature of the heat exchanger according to the evaporation temperature; and the control module is used for controlling the running state of the compressor according to the upper limit value of the condensation temperature and the evaporation temperature.
Compared with the prior art, the effect that this scheme can reach: the control device in this embodiment can execute the control method in any of the embodiments described above, so that the beneficial effects of any of the embodiments described above are achieved, and are not described herein again.
In one embodiment of the present invention, there is provided an air conditioner including: a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the control method as in any one of the above embodiments.
Compared with the prior art, the effect that this scheme can reach: the air conditioner in this embodiment can execute the control method of any of the above embodiments, and therefore has the beneficial effects of any of the above embodiments, which are not described herein again.
In an embodiment of the invention, a readable storage medium is provided, on which a program or instructions are stored, which when executed by a processor implement the steps of the control method according to any one of the above embodiments.
Compared with the prior art, the effect that this scheme can reach: the readable storage medium is used for implementing the steps of the control method according to any embodiment of the present invention, so that the readable storage medium has all the advantages of the method according to any embodiment of the present invention, and further description is omitted here.
Drawings
FIG. 1 is a flow chart of steps in a method of controlling a compressor according to some embodiments of the present invention;
FIG. 2 is a schematic diagram of a control device according to some embodiments;
fig. 3 is a schematic structural diagram of an air conditioner in some embodiments.
Description of reference numerals:
100. a control device; 101. a detection module; 102. a calculation module; 103. a control module; 200. an air conditioner; 201. a processor; 202. a memory.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments of the present invention are described in detail.
The first embodiment is as follows:
the embodiment provides a control method of a compressor, which comprises the following steps: detecting the evaporation temperature of an evaporator when the air conditioner operates; calculating to obtain the upper limit value of the condensation temperature of the heat exchanger according to the evaporation temperature; and controlling and adjusting the running state of the compressor according to the upper limit value of the condensation temperature and the evaporation temperature.
In this embodiment, the operation of the air conditioner includes the case when the air conditioner is in the heating operation or the cooling operation, wherein the control logic of the control method of the compressor in this embodiment is the same for the heating operation or the cooling operation of the air conditioner, and therefore, the air conditioner is taken as an example in the heating operation of the air conditioner in this embodiment.
When the air conditioner is in a heating operation mode, the heat exchanger of the indoor unit of the air conditioner is a condenser at the moment, the outdoor unit of the air conditioner is an evaporator, the temperature of the coil pipe on the outer side of the evaporator at the moment is detected and collected and recorded as the evaporation temperature, the detected evaporation temperature is used for judging the operation state of the compressor at the moment, and the detected evaporation temperature is compared with each judgment value according to the evaporation temperature, so that the adjustment of the compressor is determined.
Furthermore, in this embodiment, the evaporation pressure corresponding to the evaporation temperature at this time is calculated according to the evaporation temperature, the condensation pressure corresponding to the condenser at this time is calculated according to the evaporation pressure, the corresponding condensation temperature is calculated according to the condensation pressure, the calculated condensation temperature at this time is the upper limit value of the condensation temperature, the upper limit value of the condensation temperature affects each of the determination values, that is, each of the determination values is changed according to the upper limit value of the condensation temperature, for example, each of the determination values is reduced according to the upper limit value of the condensation temperature, so that when the compressor meets a smaller determination condition, the state of the compressor can be adjusted, and the compressor can always operate normally.
Further, it should be noted that the calculating of the upper limit value of the condensing temperature of the heat exchanger according to the evaporating temperature includes: calculating a condensation temperature upper limit value according to a formula T1-K1-T2 + K2; wherein T1 is the upper limit value of the condensation temperature, T2 is the evaporation temperature, and K1 and K2 are constants.
Specifically, each compressor used after factory debugging is complete is provided with a corresponding compressor specification, the highest compression ratio corresponding to the compressor is recorded in the compressor specification, when the corresponding evaporation pressure is calculated through the evaporation temperature, the evaporation pressure corresponds to a low pressure, the evaporation pressure is multiplied by the highest compression ratio, the highest condensation pressure under the evaporation pressure is obtained, the highest condensation pressure is a high pressure, the highest condensation temperature corresponding to the highest condensation pressure can be calculated through the highest condensation pressure, and the highest condensation temperature is the upper limit value of the condensation temperature. The upper limit value of the condensing temperature corresponding to the evaporating temperature can be listed at the moment, the table is a physical property table of a refrigerant of the air conditioner, and furthermore, a functional relation of the upper limit value of the condensing temperature corresponding to the evaporating temperature is fitted on a coordinate system, namely T1 is K1T 2+ K2.
The second embodiment:
controlling and adjusting the running state of the compressor according to the upper limit value of the condensing temperature and the evaporating temperature, and the method comprises the following steps: judging whether the upper limit value of the condensation temperature meets a first preset temperature or not; if yes, controlling the compressor to adjust according to a comparison result of the evaporation temperature and the first judgment condition; if not, controlling the compressor to adjust according to a comparison result of the evaporation temperature and a second judgment condition; wherein, the first judgment condition and the second judgment condition have different values.
In this embodiment, the first preset temperature is a factory preset temperature of the air conditioner, wherein the first preset temperature can be adjusted according to different use conditions. In this embodiment, specifically, the first preset temperature is a frequency-limiting temperature of the compressor, the frequency-limiting temperature is a determination temperature for limiting the frequency rising of the compressor, the frequency-limiting temperature is lower, when the upper limit value of the condensation temperature is greater than or equal to the frequency-limiting temperature, the low pressure of the compressor at the time on the surface is not particularly low, the compressor can normally operate, at this time, the compressor is controlled to adjust according to a comparison result between the evaporation temperature and the first determination condition, when the upper limit value of the condensation temperature is less than the frequency-limiting temperature, the low pressure of the compressor at the time on the surface is particularly low, at this time, the actual compression ratio (high pressure to low pressure) of the compressor is greater than a specified maximum compression ratio, and at this time, the compressor is controlled to adjust according to a comparison result between the evaporation temperature and the first determination condition.
Whether the upper limit value of the condensing temperature meets the first preset temperature is a precondition for actually adjusting the state of the compressor, so that the control method in the embodiment can more accurately control the compressor.
Example three:
the first determination condition includes: a plurality of first temperature determination threshold values that gradually increase along a temperature increase direction; and/or, the second determination condition comprises: a plurality of second temperature determination threshold values that gradually increase along the temperature increase direction; wherein the plurality of first temperature determination threshold values are larger than the plurality of second temperature determination threshold values.
It should be noted that the first temperature determination threshold is a system preset value and can be specifically adjusted according to different use conditions, and the second temperature determination threshold is obtained by adjusting according to the first temperature determination threshold in combination with the upper limit value of the condensing temperature.
In this embodiment, the plurality of first temperature determination thresholds divide the adjustment state of the compressor into a plurality of determination situations, and at the same time, the plurality of first temperature determination thresholds gradually increase along the temperature increasing direction, so that, when the evaporation temperature falls in the range of different first temperature determination thresholds in the determination, the range of different first temperature determination thresholds corresponds to different adjustment modes of the compressor, and the operation state of the compressor is adjusted according to the adjustment mode of the compressor corresponding to the range of the first temperature determination threshold in which the evaporation temperature falls.
Similarly, the plurality of second temperature determination thresholds divide the adjustment state of the compressor into a plurality of determination conditions, and the plurality of second temperature determination thresholds gradually increase along the temperature increasing direction, so that when the evaporation temperature falls in the range of different second temperature determination thresholds during determination, the range of different second temperature determination thresholds corresponds to different adjustment modes of the compressor, and the operation state of the compressor is adjusted according to the adjustment mode of the compressor corresponding to the range of the second temperature determination threshold in which the evaporation temperature falls.
The first temperature determination thresholds are greater than the second temperature determination thresholds, which means that when the evaporation pressure of the compressor is abnormally low, the evaporation temperature is low, and the operation state of the compressor can be adjusted according to the determination results of the evaporation temperature and the second temperature determination thresholds, so that the control method in the embodiment is more accurate.
Example four:
controlling the compressor to adjust according to the comparison result of the evaporation temperature and the first judgment condition, comprising: when T2 is more than or equal to A, the compressor is controlled to stop running; when B is not more than T2 and is more than A, controlling the compressor to perform frequency reduction adjustment at the speed of V1; when C is more than or equal to T2 and less than B, controlling the compressor to perform down-conversion adjustment at a speed of V2; when D is not more than T2 and C is more than C, the compressor is controlled to prohibit frequency rising; when T2 < D, controlling the compressor to operate at normal frequency; wherein A, B, C, D is a plurality of preset temperatures with different values, T2 is an evaporation temperature, V1 is greater than V2, and the normal frequency is the frequency of the normal operation of the compressor.
In this embodiment, referring to fig. 1, specifically, when the air conditioner heating operation is started in step S10, the process proceeds to step S11, where it is determined whether the upper limit value T1 of the condensing temperature is equal to or higher than a first preset temperature, if yes, the process proceeds to the right branch in fig. 1, the process proceeds to step S20, where it is continuously determined whether the evaporation temperature T2 is equal to or higher than a, and if yes, the process proceeds to step S201, and the compressor is controlled to stop. If not, the process goes to step S30, and continues to determine whether the evaporation temperature T2 at that time falls within the temperature threshold range of B or more and a or less, if yes, the process goes to step S301 to control the compressor to perform frequency reduction at the rate of V1, if no, the process goes to step S40, and continues to determine whether the evaporation temperature T2 is C or more and B or less, if yes, the process goes to step S401 to control the compressor to perform frequency reduction at the rate of V2, if no, the process goes to step S50, at this time, the process continues to determine whether the evaporation temperature T2 is D or more and C or less, if yes, the process goes to step S501 to control the compressor to prohibit frequency increase, if no, the process goes to step S502 to control the compressor to operate at the normal frequency. And finally, the air conditioner is turned off, and the control is finished.
Wherein, A, B, C, D is a plurality of preset temperature of numerical value difference, can adjust the setting according to actual operating condition and different compressor model, and the temperature unit is the degree centigrade, and simultaneously, the unit of the temperature that appears in the description is the degree centigrade. Meanwhile, in the present embodiment, specifically, a is the shutdown temperature of the compressor, and when the evaporation temperature reaches the shutdown temperature, the compressor is controlled to be shutdown. And B is the fast temperature drop of the compressor, namely the fast frequency drop temperature of the compressor, and when the evaporation temperature reaches the fast temperature drop, the compressor is controlled to fast frequency drop at the speed of V1. And C is the slow drop temperature of the compressor, namely the slow frequency drop temperature of the compressor, and when the evaporation temperature T2 is less than the fast drop temperature B and reaches the slow drop temperature C, the compressor is controlled to slowly drop frequency at the speed of V2. D is the corresponding frequency limiting temperature of the compressor, and in combination with the second embodiment, the frequency limiting temperature is the first preset temperature, in this embodiment, D is the first preset temperature, and when the evaporation temperature T2 is less than the slow-down temperature C and meets the frequency limiting temperature D, the compressor is controlled to prohibit the frequency increase. When the evaporation temperature T2 is less than the frequency limiting temperature D, the compressor is operated under normal frequency control.
It should be noted that, V1 and V2 are the same preset speed of the air conditioner system, and can be adjusted and set according to different compressor models and specific operating conditions, but it is necessary to satisfy that the V1 speed is greater than V2.
Example five:
controlling the compressor to adjust according to the comparison result of the evaporation temperature and the second determination condition, comprising: when T2 is more than or equal to A1, controlling the compressor to stop running; when B1 is not less than T2 is less than A1, the compressor is controlled to perform frequency reduction adjustment at the speed of V1; when the C1 is not less than T2 is less than B1, the compressor is controlled to perform frequency reduction adjustment at the speed of V2; when D1 is not less than T2 is more than C1, controlling the compressor to prohibit frequency increase; when T2 < D1, controlling the compressor to operate at a normal frequency; wherein A1, B1, C1 and D1 are a plurality of preset temperatures with different values, A1 is less than A, B1 is less than B, C1 is less than C, and D1 is less than D.
In this embodiment, referring to fig. 2, specifically, when the air conditioner is operated for heating from step S10, the process proceeds to step S11, where it is determined whether the upper limit value T1 of the condensing temperature is equal to or higher than a first preset temperature, if not, the process proceeds to the left branch in fig. 1, the process proceeds to step S21, and it is continuously determined whether the evaporation temperature T2 is equal to or higher than a1, and if yes, the process proceeds to step S211, where the compressor is controlled to stop. If not, the process goes to a step S31, and whether the current evaporation temperature T2 falls within a temperature threshold range of B1 or more and a1 or less is continuously determined, if yes, the process goes to a step S311, where the compressor is controlled to perform down-conversion at a rate of V1, if no, the process goes to a step S41, and if no, the process continues to determine whether the evaporation temperature T2 is C1 or more and B1 or less, if yes, the process goes to a step S411, where the compressor is controlled to perform down-conversion at a rate of V2, if no, the process goes to a step S51, where the process continues to determine whether the evaporation temperature T2 is D1 or more and C1 or less, if yes, the process goes to a step S511, where the compressor is controlled to prohibit up-conversion, if no, the process goes to a step S512, where the compressor is controlled to operate at a normal frequency. And finally, the air conditioner is turned off, and the control is finished.
Wherein, a1, B1, C1 and D1 are a plurality of preset temperatures with different values, which are determined according to the value of A, B, C, D in the fourth embodiment in combination with the upper limit value of the condensation temperature, and the temperature units are all centigrade, and meanwhile, the temperature units presented in the specification are all centigrade. Meanwhile, in the present embodiment, specifically, a1 is the shutdown temperature of the compressor, and when the evaporating temperature reaches the shutdown temperature, the compressor is controlled to be shutdown. B1 is the fast temperature drop of the compressor, i.e. the fast temperature drop of the compressor, when the evaporating temperature reaches the fast temperature drop, the compressor is controlled to fast drop the frequency at the speed of V1. C1 is the slow-down temperature of the compressor, i.e. the slow-down temperature of the compressor, when the evaporating temperature T2 is less than the fast-down temperature B1 and reaches the slow-down temperature C1, the compressor is controlled to slow down at the rate of V2. D1 is the corresponding limiting frequency temperature of the compressor, when the evaporating temperature is less than the slow-down temperature C1 and the limiting frequency temperature D1 is satisfied, the compressor is controlled to prohibit the frequency increasing. When the evaporation temperature is lower than the frequency limiting temperature D1, the compressor is operated under normal frequency control.
It should be noted that V1 and V2 are the same preset speed of the air conditioner system, and can be adjusted and set according to different compressor models and specific operating conditions, but it is required to satisfy the requirement that the V1 rate is greater than V2.
Example six:
a1 ═ a- (D-T1); b1 ═ B- (D-T1); c1 ═ C- (D-T1); d1 ═ T1; wherein T1 is the upper limit value of the condensation temperature, and D is more than T1.
In the present embodiment, the relationship among a1, B1, C1, D1, and A, B, C, D is specifically described. Under the aforementioned conditions, the condensation temperature upper limit value is judged to be smaller than the limited frequency temperature D, so the frequency-limited temperature D minus the condensation temperature upper limit value T1 is a positive number, so a1 is obtained by subtracting a positive number from a, so the value of a1 is smaller than a, thereby enabling a1 to control and adjust the use state of the compressor when the evaporation temperature is small. The same principle is B1 and C1. The frequency limiting temperature D1 takes the value of the condensation temperature upper limit value T1, and D1 is smaller than D.
The value calculation mode of a1, B1, C1, and D1 in this embodiment is an empirical value obtained by multiple experimental evidence calculation, and the accuracy of the control method in this embodiment can be further ensured by the value calculation mode in this embodiment.
Wherein A, B, C, D, A1, B1, C1 and D1 are all protection parameters.
Example seven:
referring to fig. 2, the present embodiment provides a control apparatus 100 of a compressor, including: the detection module 101, the detection module 101 is used for detecting the evaporation temperature of the evaporator when the air conditioner 200 operates; the calculating module 102, wherein the calculating module 102 is used for calculating and obtaining the upper limit value of the condensing temperature of the heat exchanger according to the evaporating temperature; and the control module 103, wherein the control module 103 is used for controlling the running state of the compressor according to the upper limit value of the condensation temperature and the evaporation temperature.
Example eight:
referring to fig. 3, the present embodiment provides an air conditioner 200, the air conditioner 200 including: a processor 201, a memory 202 and a program or instructions stored on the memory 202 and executable on the processor 201, the program or instructions, when executed by the processor 201, implementing the steps of the control method according to any of the above embodiments.
Since the air conditioner 200 in this embodiment has the control method of the compressor according to any one of the above embodiments, the air conditioner 200 in this embodiment can implement the solutions and the beneficial effects of any one of the above embodiments, and details are not repeated herein.
Example nine:
the present embodiment provides a readable storage medium on which a program or instructions are stored, which when executed by a processor implement the steps of the control method as in any one of the above embodiments.
The readable storage medium may be any combination of one or more readable media, which may be a readable signal medium or a readable storage medium, and may include, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of the readable storage medium include: an electrical connection having one or more wires, a portable diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
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 control method of a compressor, characterized by comprising:
detecting the evaporation temperature of an evaporator when the air conditioner operates;
calculating to obtain the upper limit value of the condensation temperature of the heat exchanger according to the evaporation temperature;
and controlling and adjusting the running state of the compressor according to the upper limit value of the condensation temperature and the evaporation temperature.
2. The control method according to claim 1, wherein the calculating of the upper limit value of the condensing temperature of the heat exchanger based on the evaporating temperature includes:
calculating the condensation temperature upper limit value according to a formula T1-K1-T2 + K2;
wherein the T1 is the upper limit value of the condensation temperature, the T2 is the evaporation temperature, and K1 and K2 are constants.
3. The control method according to claim 1, wherein the adjusting of the operating state of the compressor according to the condensing temperature upper limit value and the evaporating temperature control includes:
judging whether the upper limit value of the condensation temperature meets a first preset temperature or not;
if the judgment result is yes, controlling the compressor to adjust according to the comparison result of the evaporation temperature and the first judgment condition;
if not, controlling the compressor to adjust according to a comparison result of the evaporation temperature and a second determination condition;
wherein the first determination condition and the second determination condition have different values.
4. The control method according to claim 3, wherein the first determination condition includes:
a plurality of first temperature determination threshold values that gradually increase in a temperature increase direction; and/or the presence of a gas in the gas,
the second determination condition includes:
a plurality of second temperature determination threshold values that gradually increase along a temperature increase direction;
wherein the plurality of first temperature determination thresholds are greater than the plurality of second temperature determination thresholds.
5. The control method according to claim 3, wherein the controlling the compressor to adjust according to the result of comparing the evaporation temperature with a first determination condition includes:
when T2 is more than or equal to A, controlling the compressor to stop running;
when B is less than or equal to T2 and less than A, controlling the compressor to perform down-conversion adjustment at a V1 rate;
when C is less than or equal to T2 and less than B, controlling the compressor to perform down-conversion adjustment at a V2 rate;
when D is not more than T2 and C is less than C, controlling the compressor to prohibit frequency rising;
when T2 < D, controlling the compressor to operate at a normal frequency;
the A, B, C, D is preset temperatures with different values, the T2 is the evaporation temperature, the V1 rate is greater than the V2 rate, and the normal frequency is the frequency of normal operation of the compressor.
6. The control method according to claim 5, wherein said controlling the compressor to adjust according to the result of the comparison of the evaporation temperature with a second determination condition includes:
when T2 is more than or equal to A1, controlling the compressor to stop running;
when B1 is not less than T2 < A1, controlling the compressor to perform down-conversion adjustment at the V1 rate;
when C1 is not less than T2 < B1, controlling the compressor to perform down-conversion adjustment at the V2 rate;
when D1 is not less than T2 is less than C1, controlling the compressor to prohibit frequency increase;
controlling the compressor to operate at the normal frequency when T2 < D1;
the temperature control device comprises a temperature sensor, a controller and a temperature sensor, wherein A1, B1, C1 and D1 are multiple preset temperatures with different values, A1 is less than A, B1 is less than B, B1 is less than C, C1 is less than C, and D1 is less than D1.
7. The control method according to claim 6,
said a1 ═ a- (D-T1);
said B1 ═ B- (D-T1);
said C1 ═ C- (D-T1);
the D1 ═ T1;
wherein the T1 is the upper limit value of the condensation temperature, and the D is more than T1.
8. A control apparatus of a compressor, characterized by comprising:
the detection module is used for detecting the evaporation temperature of the evaporator when the air conditioner operates;
the calculation module is used for calculating and obtaining the upper limit value of the condensation temperature of the heat exchanger according to the evaporation temperature;
and the control module is used for controlling the running state of the compressor according to the upper limit value of the condensation temperature and the evaporation temperature.
9. An air conditioner, characterized in that the air conditioner comprises: a processor, a memory and a program or instructions stored on the memory and executable on the processor, which when executed by the processor implement the steps of the control method of any one of claims 1 to 11.
10. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the control method according to any one of claims 1 to 11.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009093297A1 (en) * | 2008-01-21 | 2009-07-30 | Mitsubishi Electric Corporation | Heat pump apparatus and air conditioner or water heater having the heat pump apparatus mounted thereon |
| CN105571067A (en) * | 2016-01-04 | 2016-05-11 | 青岛海尔空调电子有限公司 | Multiple online control method and system |
| CN106556187A (en) * | 2016-11-10 | 2017-04-05 | 华为技术有限公司 | The control method run under air-conditioning refrigeration system critical state, apparatus and system |
| CN110186164A (en) * | 2019-05-31 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of control method and device of air conditioner |
| CN113405236A (en) * | 2021-06-25 | 2021-09-17 | 海信（山东）空调有限公司 | Self-cleaning sterilization control method and device for air conditioner, air conditioner and storage medium |
| CN114110953A (en) * | 2021-11-29 | 2022-03-01 | 海信（山东）空调有限公司 | Air conditioner self-cleaning control method, air conditioner and computer storage medium |
-
2022
- 2022-06-22 CN CN202210713537.7A patent/CN114992795B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009093297A1 (en) * | 2008-01-21 | 2009-07-30 | Mitsubishi Electric Corporation | Heat pump apparatus and air conditioner or water heater having the heat pump apparatus mounted thereon |
| CN105571067A (en) * | 2016-01-04 | 2016-05-11 | 青岛海尔空调电子有限公司 | Multiple online control method and system |
| CN106556187A (en) * | 2016-11-10 | 2017-04-05 | 华为技术有限公司 | The control method run under air-conditioning refrigeration system critical state, apparatus and system |
| CN110186164A (en) * | 2019-05-31 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of control method and device of air conditioner |
| CN113405236A (en) * | 2021-06-25 | 2021-09-17 | 海信（山东）空调有限公司 | Self-cleaning sterilization control method and device for air conditioner, air conditioner and storage medium |
| CN114110953A (en) * | 2021-11-29 | 2022-03-01 | 海信（山东）空调有限公司 | Air conditioner self-cleaning control method, air conditioner and computer storage medium |
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