CN111380185A - Compressor exhaust temperature frequency limiting control method, air conditioner and readable storage medium - Google Patents
Compressor exhaust temperature frequency limiting control method, air conditioner and readable storage medium Download PDFInfo
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- CN111380185A CN111380185A CN202010234206.6A CN202010234206A CN111380185A CN 111380185 A CN111380185 A CN 111380185A CN 202010234206 A CN202010234206 A CN 202010234206A CN 111380185 A CN111380185 A CN 111380185A
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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
- F24F11/50—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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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Abstract
The invention discloses a compressor exhaust temperature frequency limiting control method, an air conditioner and a readable storage medium, wherein in the frequency increasing process of a compressor, the frequency limiting frequency is dynamically adjusted according to the exhaust temperature, if the exhaust temperature reaches a first temperature threshold in the frequency increasing process of the compressor, a new frequency limiting frequency is generated, the new frequency limiting frequency is smaller than the frequency limiting frequency in the frequency increasing process of the time, so that the situation that the frequency of the compressor is increased to the frequency limiting frequency in the last frequency increasing process in the next frequency increasing process to trigger the frequency reducing temperature threshold again can be avoided, the frequent frequency limiting caused by periodic fluctuation of the exhaust temperature is reduced, the system fluctuation is reduced, and the operation reliability of an air conditioning system is improved.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a compressor exhaust temperature frequency limiting control method, an air conditioner and a readable storage medium.
Background
When the air conditioner is operated under a high load or a refrigerant leaks, the exhaust temperature is usually higher, when the exhaust temperature is increased to exceed a threshold value, the frequency of the compressor is reduced to inhibit the increase or decrease of the exhaust temperature, when the exhaust temperature is lower than the threshold value, the frequency limitation is removed, and at the moment, the frequency of the compressor is increased.
However, the exhaust temperature is detected by the temperature on the exhaust copper pipe, the detected temperature change needs to slow and lag a lot relative to the adjustment of the system, after the exhaust frequency limit of the compressor is removed, the exhaust temperature may still drop when the compressor is frequency-up, and when the frequency is up to the maximum frequency limit frequency, the exhaust temperature continues to rise until the frequency limit frequency exceeds the frequency limit threshold, in the prior art, the frequency limit frequency is a preset fixed value, when the frequency limit frequency is set to be relatively low, the frequency of the compressor can be adjusted up and down, so that the system operation is periodically fluctuated, the heating effect is influenced, the compressor can continuously refrigerate and frequency-convert to bring noise, the frequency limit frequency can be controlled to enter and be removed frequently in a short time, the air outlet temperature, the system pressure and the current power fluctuation are large, the use comfort of users is influenced, the service life of the compressor is prolonged, and the fault, the reliability is reduced.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a frequency-limiting control method for the exhaust temperature of a compressor, an air conditioner and a computer readable storage medium, and aims to solve the problem that the frequency of the compressor fluctuates up and down and back and forth caused by fixed frequency limiting frequency.
In order to achieve the above object, the present invention provides a frequency-limiting control method for the discharge temperature of a compressor, comprising the following steps:
detecting that the exhaust temperature rises to a first temperature threshold, controlling the compressor to start frequency reduction, and acquiring a first frequency limiting frequency, wherein the first frequency limiting frequency is smaller than the frequency of the compressor when the exhaust temperature rises to the first temperature threshold;
detecting that the exhaust temperature after the frequency reduction is reduced to a second temperature threshold value, and controlling the compressor to increase the frequency to the first frequency limiting frequency, wherein the second temperature threshold value is smaller than the first temperature threshold value;
and when detecting that the exhaust temperature is less than the second temperature threshold when the frequency of the compressor rises to the first frequency limiting frequency, controlling the compressor to operate at the first frequency limiting frequency.
In one embodiment, after the step of controlling the compressor to operate at the first frequency limited frequency, the method further comprises:
detecting that the exhaust temperature is still smaller than the second temperature threshold when the compressor runs at the first frequency limiting frequency for a preset time, and acquiring a second frequency limiting frequency according to the first frequency limiting frequency, wherein the second frequency limiting frequency is larger than the first frequency limiting frequency;
and controlling the compressor to increase the frequency from the first frequency limiting frequency to the second frequency limiting frequency, monitoring the exhaust temperature in the frequency increasing process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature.
In an embodiment, the step of obtaining the second limited frequency according to the first limited frequency includes:
and taking the sum of the first frequency limiting frequency and a preset frequency increasing correction value as a second frequency limiting frequency.
In an embodiment, the step of controlling the compressor to perform frequency up conversion from the first frequency limiting frequency to the second frequency limiting frequency, monitoring the exhaust temperature during the frequency up conversion, and adjusting the compressor frequency and the frequency limiting frequency according to the exhaust temperature includes:
when the exhaust temperature is lower than the second temperature threshold value when the frequency of the compressor is increased to the second frequency limiting frequency, controlling the compressor to operate at the second frequency limiting frequency;
detecting that the exhaust temperature is still smaller than the second temperature threshold when the compressor runs at the second frequency limiting frequency for a preset time, and acquiring a third frequency limiting frequency according to the second frequency limiting frequency, wherein the third frequency limiting frequency is larger than the second frequency limiting frequency;
and controlling the compressor to increase the frequency from the second frequency limiting frequency to the third frequency limiting frequency, monitoring the exhaust temperature in the frequency increasing process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature.
In one embodiment, before the steps of detecting that the exhaust temperature rises to the first temperature threshold, controlling the compressor to start frequency reduction, and acquiring the first frequency limiting frequency, the method further includes:
and detecting that the exhaust temperature rises to a third temperature threshold value, acquiring the current operating frequency, and controlling the compressor to operate at the current operating frequency, wherein the third temperature threshold value is smaller than the first temperature threshold value and larger than the second temperature threshold value.
In one embodiment, after the steps of detecting the exhaust temperature rising to the third temperature threshold, obtaining the current operating frequency, and controlling the compressor to operate at the current operating frequency, the method further includes:
and controlling the compressor to continuously operate at the current operating frequency if the detected exhaust temperature is greater than the third temperature threshold and less than the first temperature threshold.
In one embodiment, after the steps of detecting that the exhaust temperature rises to the first temperature threshold, controlling the compressor to start frequency reduction, and acquiring the first frequency limiting frequency, the method further includes:
detecting that the exhaust temperature rises to a fourth temperature threshold after the frequency reduction, controlling the compressor to stop, and monitoring the exhaust temperature, wherein the fourth temperature threshold is greater than the first temperature threshold;
detecting that the exhaust temperature of the compressor is reduced to a second temperature threshold value, starting the compressor and executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
In an embodiment, before the step of controlling the compressor to frequency up-convert to the first frequency limiting frequency, the method further includes:
acquiring the compressor frequency and the demand frequency when the exhaust temperature is reduced to a second temperature threshold;
if the compressor frequency when the exhaust temperature is reduced to the second temperature threshold is less than the demand frequency, executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
In an embodiment, after the step of obtaining the compressor frequency and the demand frequency when the exhaust temperature falls to the second temperature threshold, the method further includes:
and if the frequency of the compressor when the exhaust temperature is reduced to the second temperature threshold value is greater than or equal to the demand frequency, controlling the compressor to operate at the demand frequency.
In an embodiment, before the step of controlling the compressor to frequency up-convert to the first frequency limiting frequency, the method further includes:
comparing the required frequency with a first frequency limiting frequency;
if the first frequency limiting frequency is less than the required frequency, executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
In an embodiment, after the step of comparing the magnitude of the demand frequency with the first frequency limiting frequency, the method further includes:
if the first frequency limiting frequency is greater than or equal to the demand frequency, controlling the compressor to increase the frequency of the demand frequency;
and if the exhaust temperature when the frequency of the compressor is increased to the required frequency is less than the second temperature threshold value, controlling the compressor to operate at the required frequency.
In an embodiment, the step of acquiring the first limited frequency includes:
determining a first frequency limiting frequency according to the difference between the compressor frequency when the exhaust temperature rises to a first temperature threshold value and a preset frequency reduction correction value; alternatively, the first and second electrodes may be,
acquiring the frequency limiting times and the initial frequency limiting frequency of the compressor;
and determining a first frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and a preset frequency reduction correction value.
In one embodiment, the step of determining the first frequency limiting frequency according to the difference between the current operating frequency when the exhaust temperature rises to the first temperature threshold and the preset down-conversion correction value includes:
taking the difference between the compressor frequency when the exhaust temperature rises to the first temperature threshold and a preset frequency reduction correction value as an alternative frequency limiting frequency;
determining a first frequency limiting frequency according to the alternative frequency limiting frequency and a preset minimum frequency limiting frequency;
or, the step of determining the first frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and the preset down-conversion correction value comprises:
determining alternative frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and a preset frequency reduction correction value;
and determining the first frequency limiting frequency according to the alternative frequency limiting frequency and the preset minimum frequency limiting frequency.
In an embodiment, the step of determining the first frequency limiting frequency according to the candidate frequency limiting frequency and the preset minimum frequency limiting frequency includes:
if the alternative frequency limiting frequency is less than or equal to a preset minimum frequency limiting frequency, taking the preset minimum frequency limiting frequency as a first frequency limiting frequency;
and if the alternative frequency limiting frequency is greater than a preset minimum frequency limiting frequency, taking the alternative frequency limiting frequency as a first frequency limiting frequency.
Further, to achieve the above object, the present invention also provides an air conditioner including: the frequency-limiting control method comprises a memory, a processor and a compressor exhaust temperature frequency-limiting control program which is stored on the memory and can run on the processor, wherein the compressor exhaust temperature frequency-limiting control program realizes the steps of the compressor exhaust temperature frequency-limiting control method when being executed by the processor.
In addition, to achieve the above object, the present invention further provides a computer readable storage medium, wherein a compressor discharge temperature frequency limiting control program is stored on the computer readable storage medium, and when being executed by a processor, the computer readable storage medium implements the steps of the compressor discharge temperature frequency limiting control method.
The method comprises the steps of controlling a compressor to start frequency reduction by detecting that the exhaust temperature rises to a first temperature threshold value, and acquiring a first frequency limiting frequency, wherein the first frequency limiting frequency is smaller than the frequency of the compressor when the exhaust temperature rises to the first temperature threshold value; detecting that the exhaust temperature after the frequency reduction is reduced to a second temperature threshold value, and controlling the compressor to increase the frequency to the first frequency limiting frequency, wherein the second temperature threshold value is smaller than the first temperature threshold value; and when detecting that the exhaust temperature is less than the second temperature threshold when the frequency of the compressor rises to the first frequency limiting frequency, controlling the compressor to operate at the first frequency limiting frequency.
The invention realizes that the frequency limiting frequency is dynamically adjusted according to the exhaust temperature in the frequency increasing process of the compressor, if the exhaust temperature reaches the first temperature threshold in the frequency increasing process, a new frequency limiting frequency is generated, the new frequency limiting frequency is lower than the frequency limiting frequency in the frequency increasing process, thus the frequency limiting frequency of the compressor which is increased to the last frequency increasing process in the next frequency increasing process can be avoided, the frequency reducing temperature threshold is triggered again, the frequent frequency limiting action caused by the periodic fluctuation of the exhaust temperature is reduced, the system fluctuation is reduced, and the operation reliability of the air conditioning system is improved.
Drawings
FIG. 1 is a schematic diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a method for controlling a discharge temperature of a compressor in a frequency limited manner according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic structural diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the air conditioner configuration shown in fig. 1 is not intended to be limiting of the air conditioner and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a type of computer storage medium, may include an operating system, a network communication module, a user interface module, and a compressor discharge temperature frequency limiting control program.
In the air conditioner shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and processor 1001 may be configured to invoke a compressor discharge temperature frequency limiting control program stored in memory 1005.
In the present embodiment, an air conditioner includes: a memory 1005, a processor 1001 and a compressor discharge air temperature frequency limiting control program stored in the memory 1005 and operable on the processor 1001, wherein when the processor 1001 calls the compressor discharge air temperature frequency limiting control program stored in the memory 1005, the following operations are performed:
detecting that the exhaust temperature rises to a first temperature threshold, controlling the compressor to start frequency reduction, and acquiring a first frequency limiting frequency, wherein the first frequency limiting frequency is smaller than the frequency of the compressor when the exhaust temperature rises to the first temperature threshold;
detecting that the exhaust temperature after the frequency reduction is reduced to a second temperature threshold value, and controlling the compressor to increase the frequency to the first frequency limiting frequency, wherein the second temperature threshold value is smaller than the first temperature threshold value;
and when detecting that the exhaust temperature is less than the second temperature threshold when the frequency of the compressor rises to the first frequency limiting frequency, controlling the compressor to operate at the first frequency limiting frequency.
Further, after the step of controlling the compressor to operate at the first limited frequency, the method further includes:
detecting that the exhaust temperature is still smaller than the second temperature threshold when the compressor runs at the first frequency limiting frequency for a preset time, and acquiring a second frequency limiting frequency according to the first frequency limiting frequency, wherein the second frequency limiting frequency is larger than the first frequency limiting frequency;
and controlling the compressor to increase the frequency from the first frequency limiting frequency to the second frequency limiting frequency, monitoring the exhaust temperature in the frequency increasing process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature.
Further, the step of obtaining a second limited frequency according to the first limited frequency comprises:
and taking the sum of the first frequency limiting frequency and a preset frequency increasing correction value as a second frequency limiting frequency.
Further, the step of controlling the compressor to raise the frequency from the first frequency limiting frequency to the second frequency limiting frequency, monitoring the exhaust temperature in the raising process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature includes:
when the exhaust temperature is lower than the second temperature threshold value when the frequency of the compressor is increased to the second frequency limiting frequency, controlling the compressor to operate at the second frequency limiting frequency;
detecting that the exhaust temperature is still smaller than the second temperature threshold when the compressor runs at the second frequency limiting frequency for a preset time, and acquiring a third frequency limiting frequency according to the second frequency limiting frequency, wherein the third frequency limiting frequency is larger than the second frequency limiting frequency;
and controlling the compressor to increase the frequency from the second frequency limiting frequency to the third frequency limiting frequency, monitoring the exhaust temperature in the frequency increasing process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature.
Further, before the step of detecting that the exhaust temperature rises to the first temperature threshold, controlling the compressor to start frequency reduction, and acquiring the first frequency limiting frequency, the method further comprises:
and detecting that the exhaust temperature rises to a third temperature threshold value, acquiring the current operating frequency, and controlling the compressor to operate at the current operating frequency, wherein the third temperature threshold value is smaller than the first temperature threshold value and larger than the second temperature threshold value.
Further, after the steps of detecting that the exhaust temperature rises to a third temperature threshold, obtaining a current operating frequency, and controlling the compressor to operate at the current operating frequency, the method further includes:
and controlling the compressor to continuously operate at the current operating frequency if the detected exhaust temperature is greater than the third temperature threshold and less than the first temperature threshold.
Further, after the step of detecting that the exhaust temperature rises to the first temperature threshold, controlling the compressor to start frequency reduction, and acquiring the first frequency limiting frequency, the method further comprises:
detecting that the exhaust temperature rises to a fourth temperature threshold after the frequency reduction, controlling the compressor to stop, and monitoring the exhaust temperature, wherein the fourth temperature threshold is greater than the first temperature threshold;
detecting that the exhaust temperature of the compressor is reduced to a second temperature threshold value, starting the compressor and executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
Further, before the step of controlling the compressor to frequency up-convert to the first frequency limiting frequency, the method further includes:
acquiring the compressor frequency and the demand frequency when the exhaust temperature is reduced to a second temperature threshold;
if the compressor frequency when the exhaust temperature is reduced to the second temperature threshold is less than the demand frequency, executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
Further, after the step of obtaining the compressor frequency and the demand frequency when the exhaust temperature falls to the second temperature threshold, the method further includes:
and if the frequency of the compressor when the exhaust temperature is reduced to the second temperature threshold value is greater than or equal to the demand frequency, controlling the compressor to operate at the demand frequency.
Further, before the step of controlling the compressor to frequency up-convert to the first frequency limiting frequency, the method further includes:
comparing the required frequency with a first frequency limiting frequency;
if the first frequency limiting frequency is less than the required frequency, executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
Further, after the step of comparing the magnitude of the demand frequency with the first frequency limiting frequency, the method further includes:
if the first frequency limiting frequency is greater than or equal to the demand frequency, controlling the compressor to increase the frequency of the demand frequency;
and if the exhaust temperature when the frequency of the compressor is increased to the required frequency is less than the second temperature threshold value, controlling the compressor to operate at the required frequency.
Further, the step of acquiring the first limited frequency comprises:
determining a first frequency limiting frequency according to the difference between the compressor frequency when the exhaust temperature rises to a first temperature threshold value and a preset frequency reduction correction value; alternatively, the first and second electrodes may be,
acquiring the frequency limiting times and the initial frequency limiting frequency of the compressor;
and determining a first frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and a preset frequency reduction correction value.
Further, the step of determining the first frequency limiting frequency according to the difference between the current operating frequency when the exhaust temperature rises to the first temperature threshold and the preset frequency reduction correction value includes:
taking the difference between the compressor frequency when the exhaust temperature rises to the first temperature threshold and a preset frequency reduction correction value as an alternative frequency limiting frequency;
determining a first frequency limiting frequency according to the alternative frequency limiting frequency and a preset minimum frequency limiting frequency;
or, the step of determining the first frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and the preset down-conversion correction value comprises:
determining alternative frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and a preset frequency reduction correction value;
and determining the first frequency limiting frequency according to the alternative frequency limiting frequency and the preset minimum frequency limiting frequency.
Further, the step of determining the first frequency limiting frequency according to the candidate frequency limiting frequency and the preset minimum frequency limiting frequency includes:
if the alternative frequency limiting frequency is less than or equal to a preset minimum frequency limiting frequency, taking the preset minimum frequency limiting frequency as a first frequency limiting frequency;
and if the alternative frequency limiting frequency is greater than a preset minimum frequency limiting frequency, taking the alternative frequency limiting frequency as a first frequency limiting frequency.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the method for controlling the frequency limit of the discharge temperature of the compressor according to the present invention, which can be applied to the air conditioner.
In this embodiment, the frequency-limited control method for the discharge temperature of the compressor includes:
step S10, detecting that the exhaust temperature rises to a first temperature threshold, controlling the compressor to start frequency reduction, and acquiring a first frequency limiting frequency, wherein the first frequency limiting frequency is smaller than the frequency of the compressor when the exhaust temperature rises to the first temperature threshold;
in the prior art, because the temperature of the exhaust copper pipe is detected, the detected temperature change needs to slow and lag a lot relative to the adjustment of the system, after the exhaust frequency limit of the compressor is removed, the exhaust temperature may still drop when the frequency of the compressor is increased, and when the frequency reaches the maximum frequency limit frequency, the exhaust temperature continues to rise until the frequency limit frequency exceeds the frequency limit threshold, in the prior art, the frequency limit frequency is a fixed value which is preset, when the frequency limit frequency is set to be lower, the frequency of the compressor can be adjusted up and down to cause periodic fluctuation of the system operation, the refrigeration and heating effects are influenced, the compressor continuously increases the frequency and reduces the frequency to bring noise, the frequent entering and removal of frequency limit control in a short time causes the air outlet temperature, the system pressure, the current power fluctuation is large, the use comfort of a user is influenced, and the service life of the compressor, the failure rate is increased and the reliability is reduced.
In order to solve the technical problem of up-and-down fluctuation of the compressor frequency caused by a fixed frequency limit frequency in the prior art, the embodiment of the invention provides a compressor exhaust temperature frequency limit control method, aiming at dynamically adjusting the frequency limit frequency according to the exhaust temperature in the frequency conversion process of a compressor, if the exhaust temperature reaches a first temperature threshold in the frequency increasing process, a new frequency limit frequency is generated, and the new frequency limit frequency is smaller than the frequency limit frequency in the frequency increasing process, so that the problem that the frequency limit frequency in the frequency increasing process of the last time is increased again when the frequency of the compressor is increased next time, the frequency reduction temperature threshold is triggered again, and further the periodic frequency increasing and frequency reducing of the compressor are caused can be avoided.
It is understood that when the air conditioner is turned on or the mode is switched, if the cooling temperature needs to be increased, for example, the cooling temperature is adjusted from 27 ℃ to 18 ℃, in order to meet the increased energy demand, the compressor will increase the operation frequency, but the increase of the operation frequency will increase the exhaust temperature, and the exhaust temperature will be monitored in the process of increasing the frequency.
Before step S10, the method further includes: detecting the exhaust temperature rising to a third temperature threshold T3, acquiring the current operating frequency of the compressor, and controlling the compressor to maintain the operation at the current operating frequency, wherein the third temperature threshold T3 is less than the first temperature threshold T1 and greater than the second temperature threshold T2. Specifically, during the frequency increasing, in the process of monitoring the exhaust temperature, if it is detected that the exhaust temperature increases to the third temperature threshold T3, the frequency of the compressor when the exhaust temperature increases to the third temperature threshold is obtained as the first maintenance frequency, and the compressor is controlled to maintain the operation at the first maintenance frequency to slow down the rising trend of the exhaust temperature.
The discharge temperature may also continue to rise during the time that the compressor is maintaining operation at the first maintenance frequency, but the compressor is controlled to continue to maintain operation at the maintenance frequency as long as the discharge temperature is greater than the third temperature threshold and less than the first temperature threshold.
If the exhaust temperature continues to rise and reaches the first temperature threshold, the compressor is controlled to start frequency reduction from the maintaining frequency, and a first frequency limiting frequency is obtained, wherein the first frequency limiting frequency is smaller than the compressor frequency when the exhaust temperature rises to the first temperature threshold, namely the first frequency limiting frequency is smaller than the first maintaining frequency. The frequency limiting frequency is the maximum value allowed by the next frequency increasing of the compressor, and when the frequency of the compressor reaches the value, the frequency increasing cannot be continued, and the operation can be maintained or the frequency is reduced only by the frequency limiting frequency.
In this embodiment, the first temperature threshold is equivalent to the down-conversion temperature threshold, and as long as the down-conversion temperature threshold is triggered, a new frequency-limiting frequency is generated, where the new frequency-limiting frequency is smaller than the frequency-limiting frequency of the last up-conversion, so as to avoid that the frequency of the compressor is increased again to the frequency-limiting frequency of the last up-conversion in the next up-conversion, which causes the down-conversion temperature threshold to be triggered again, and further causes the down-conversion again.
Wherein the value range of the first temperature threshold T1 is more than or equal to 105 ℃ and less than T1 and less than 115 ℃; the value range of the third temperature threshold T3 is T3 < 105 ℃ greater than or equal to 95 ℃, and the values of the first temperature threshold and the second temperature threshold are not specifically limited in this embodiment and can be set according to actual needs.
Furthermore, the value range of the frequency reduction rate a when the compressor reduces the frequency is 1Hz/min or more and 300Hz/min or less, and the value of the frequency reduction rate is not specifically limited in this embodiment and can be set according to actual needs.
Step S20, detecting that the exhaust temperature is reduced to a second temperature threshold value after frequency reduction, and controlling the compressor to increase the frequency to the first frequency limiting frequency;
in this embodiment, in the process of decreasing the frequency of the compressor from the first maintaining frequency, the discharge temperature may first increase and then decrease, may immediately start decreasing, or may fluctuate.
Wherein the value range of the second temperature threshold T2 is more than or equal to 70 ℃ and less than T2 and less than 95 ℃; the value range of the fourth temperature threshold T4 is not less than 115 ℃ and not more than T3 and not more than 150 ℃, and the values of the second temperature threshold and the fourth temperature threshold are not specifically limited in this embodiment and can be set according to actual needs.
Furthermore, in the process that the frequency of the compressor starts to decrease from the first maintaining frequency, the exhaust temperature may continue to increase due to the hysteresis of the change of the exhaust temperature, if the temperature increases to the fourth temperature threshold, the compressor is controlled to stop so as to decrease the exhaust temperature as soon as possible, after the compressor stops, the exhaust temperature is continuously monitored, when the exhaust temperature decreases to the second temperature threshold, the compressor is started and controlled to restart the frequency increasing, and the frequency limiting frequency is the first frequency limiting frequency.
And step S30, detecting that the exhaust temperature is less than the second temperature threshold when the frequency of the compressor is increased to the first frequency limiting frequency, and controlling the compressor to operate at the first frequency limiting frequency, wherein the second temperature threshold is less than the first temperature threshold.
In this embodiment, in the process of raising the frequency of the compressor to the first frequency limiting frequency, if the discharge temperature is lower than the second temperature threshold, the compressor continues to raise the frequency until the discharge temperature is raised to the first frequency limiting frequency, and if the discharge temperature is also lower than the second temperature threshold when the compressor is raised to the first frequency limiting frequency, the compressor is controlled to maintain operation at the first frequency limiting frequency, and in the process of maintaining operation, the discharge temperature is continuously monitored.
In the embodiment, the compressor is controlled to start frequency reduction by detecting that the exhaust temperature rises to a first temperature threshold, and a first frequency limiting frequency is obtained, wherein the first frequency limiting frequency is smaller than the frequency of the compressor when the exhaust temperature rises to the first temperature threshold; detecting that the exhaust temperature after the frequency reduction is reduced to a second temperature threshold value, and controlling the compressor to increase the frequency to the first frequency limiting frequency, wherein the second temperature threshold value is smaller than the first temperature threshold value; and when detecting that the exhaust temperature is less than the second temperature threshold when the frequency of the compressor rises to the first frequency limiting frequency, controlling the compressor to operate at the first frequency limiting frequency. The frequency limiting frequency is dynamically adjusted according to the exhaust temperature in the frequency increasing process of the compressor, if the exhaust temperature reaches the first temperature threshold in the frequency increasing process, a new frequency limiting frequency is generated, the new frequency limiting frequency is lower than the frequency limiting frequency in the frequency increasing process, and therefore the situation that the frequency of the compressor is increased to the frequency limiting frequency in the frequency increasing process of the last time when the frequency is increased next time, the frequency limiting frequency is triggered again, the frequency limiting temperature threshold is triggered again, the frequent frequency limiting action caused by periodic fluctuation of the exhaust temperature is reduced, system fluctuation is reduced, and the operation reliability of an air conditioning system is improved.
Further, based on the first embodiment, a second embodiment of the frequency-limited control method for the discharge temperature of the compressor in the present invention is provided, and in this embodiment, after step S30, the method further includes:
step S40, detecting that when the compressor runs at the first frequency limiting frequency for a preset time, the exhaust temperature is still less than the second temperature threshold, acquiring a second frequency limiting frequency according to the first frequency limiting frequency, wherein the second frequency limiting frequency is greater than the first frequency limiting frequency;
if the exhaust temperature is continuously lower than the second temperature threshold after the compressor is kept running for the preset time at the first frequency limiting frequency, the compressor can be operated at the first frequency limiting frequency without triggering the frequency reduction temperature threshold, namely without triggering the first temperature threshold, the frequency limiting frequency can be adjusted upwards, and the frequency limiting frequency after being adjusted upwards, namely the second frequency limiting frequency, can be obtained according to the first frequency limiting frequency, so that the frequency of the compressor can be continuously increased. Wherein the value range of the preset time e is that a is more than or equal to 3min and less than or equal to 30 min.
Further, the step of obtaining a second limited frequency according to the first limited frequency includes: and taking the sum of the first frequency limiting frequency and a preset frequency increasing correction value as a second frequency limiting frequency. It can be understood that, every time the compressor is operated at a certain limited frequency for a preset time, if the discharge temperature is still less than the second temperature threshold, a new limited frequency can be calculated according to the limited frequency and the preset frequency-up correction value. The value range of the preset frequency-increasing correction value f is 1Hz or less and f or less and 10Hz, and the value of the preset frequency-increasing correction value is not specifically limited in the embodiment and can be set according to actual needs.
And step S50, controlling the compressor to increase the frequency from the first frequency limiting frequency to the second frequency limiting frequency, monitoring the exhaust temperature in the frequency increasing process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature.
And after the second frequency limiting frequency is obtained, controlling the compressor to continuously increase the frequency from the first frequency limiting frequency to the second frequency limiting frequency, and continuously monitoring the exhaust temperature in the frequency increasing process so as to adjust the frequency of the compressor and the frequency limiting frequency according to the size of the exhaust temperature.
Further, the step S50 includes:
when the exhaust temperature is lower than the second temperature threshold value when the frequency of the compressor is increased to the second frequency limiting frequency, controlling the compressor to operate at the second frequency limiting frequency;
detecting that the exhaust temperature is still smaller than the second temperature threshold when the compressor runs at the second frequency limiting frequency for a preset time, and acquiring a third frequency limiting frequency according to the second frequency limiting frequency, wherein the third frequency limiting frequency is larger than the second frequency limiting frequency;
and controlling the compressor to increase the frequency from the second frequency limiting frequency to the third frequency limiting frequency, monitoring the exhaust temperature in the frequency increasing process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature.
In this embodiment, in the process of increasing the frequency of the compressor from the first frequency limiting frequency to the second frequency limiting frequency, if the discharge temperature is still less than the second temperature threshold when the frequency of the compressor increases to the second frequency limiting frequency, the compressor is controlled to maintain the operation at the second frequency limiting frequency. After the preset operation duration is maintained at the second frequency limiting frequency, if the exhaust temperature is still smaller than the second temperature threshold, the fact that the compressor operates at the second frequency limiting frequency does not trigger the frequency reduction temperature threshold, namely the first temperature threshold is not triggered, the frequency limiting frequency can be continuously adjusted upwards, the frequency limiting frequency after being adjusted upwards, namely the third frequency limiting frequency is obtained according to the second frequency limiting frequency, the third frequency limiting frequency is the sum of the second frequency limiting frequency and a preset frequency increasing correction value, the frequency of the compressor can be continuously increased, and the temperature of the frequency increasing process is also monitored according to the method.
Based on the foregoing embodiment, a third embodiment of the method for controlling a discharge temperature of a compressor in a frequency-limited manner according to the present invention is provided, in this embodiment, before the step of controlling the compressor to perform frequency up-conversion to the first frequency-limited frequency in step S20, the method further includes:
step S201, acquiring the frequency of a compressor and the required frequency when the exhaust temperature is reduced to a second temperature threshold;
if the compressor frequency when the exhaust temperature is reduced to the second temperature threshold is less than the demand frequency, executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
Further, after step S201, the method further includes:
and if the frequency of the compressor when the exhaust temperature is reduced to the second temperature threshold value is greater than or equal to the demand frequency, controlling the compressor to operate at the demand frequency.
In this embodiment, before controlling the compressor to increase the frequency to the first frequency limiting frequency, the current frequency of the compressor, i.e. the frequency of the compressor when the discharge temperature falls to the second temperature threshold, is also required to obtain the current demand frequency, because the demand frequency may change with the operation of the compressor. Then judging whether the current compressor frequency is smaller than the current demand frequency, if so, controlling the compressor to increase the frequency to the first frequency limiting frequency; if not, the current operation frequency of the compressor can meet the energy demand, and even exceeds the energy demand, the compressor is operated at the required frequency.
Further, in step S20, before the step of controlling the compressor to frequency up-convert to the first frequency limiting frequency, the method further includes:
step S202, comparing the required frequency with a first frequency limiting frequency;
if the first frequency limiting frequency is less than the required frequency, executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
Further, after step S202, the method further includes:
if the first frequency limiting frequency is greater than or equal to the demand frequency, controlling the compressor to increase the frequency of the demand frequency;
and if the exhaust temperature when the frequency of the compressor is increased to the required frequency is less than the second temperature threshold value, controlling the compressor to operate at the required frequency.
In this embodiment, if the frequency of the compressor when the exhaust temperature is decreased to the second temperature threshold is less than the required frequency, the required frequency may be continuously compared with the first frequency limiting frequency, and if the first frequency limiting frequency is less than the required frequency, the compressor is controlled to increase the frequency to the first frequency limiting frequency, so that the frequency of the compressor is as close as possible to the required frequency to meet the energy requirement as possible.
If the first frequency limiting frequency is larger than or equal to the demand frequency, the compressor is controlled to increase the frequency to the demand frequency, and if the exhaust temperature is smaller than a second temperature threshold when the frequency of the compressor increases to the demand frequency, the compressor is controlled to maintain running at the demand frequency so as to meet the energy demand.
Further, if it is monitored that the exhaust temperature rises to the first temperature threshold value in the frequency rising process, the process returns to step S10 to control the compressor to start frequency reduction and obtain a new frequency limiting frequency.
In the embodiment, the frequency increasing time can be automatically and intelligently determined by determining the current frequency and the required frequency.
Based on the above embodiment, a fourth embodiment of the compressor discharge temperature frequency-limiting control method of the present invention is provided, in this embodiment, in step S10, the step of acquiring the first frequency-limiting frequency includes:
step S101, determining a first frequency limiting frequency according to the difference between the compressor frequency when the exhaust temperature rises to a first temperature threshold and a preset frequency reduction correction value; alternatively, the first and second electrodes may be,
step S1001, acquiring frequency limiting times and initial frequency limiting frequency of a compressor;
step S1002, determining a first frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and a preset frequency reduction correction value.
In this embodiment, step S101 specifically includes: taking the difference between the compressor frequency when the exhaust temperature rises to the first temperature threshold and a preset frequency reduction correction value as an alternative frequency limiting frequency; determining a first frequency limiting frequency according to the alternative frequency limiting frequency and a preset minimum frequency limiting frequency; if the alternative frequency limiting frequency is less than or equal to the preset minimum frequency limiting frequency, taking the preset minimum frequency limiting frequency as a first frequency limiting frequency; and if the alternative frequency limiting frequency is greater than the preset minimum frequency limiting frequency, taking the alternative frequency limiting frequency as the first frequency limiting frequency.
Step S1002 specifically includes: determining alternative frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and a preset frequency reduction correction value; determining a first frequency limiting frequency according to the alternative frequency limiting frequency and a preset minimum frequency limiting frequency; if the alternative frequency limiting frequency is less than or equal to a preset minimum frequency limiting frequency, taking the preset minimum frequency limiting frequency as a first frequency limiting frequency; and if the alternative frequency limiting frequency is greater than a preset minimum frequency limiting frequency, taking the alternative frequency limiting frequency as a first frequency limiting frequency.
The calculation formula for determining the alternative frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and the preset frequency reduction correction value is that the alternative frequency limiting frequency is equal to the initial frequency limiting frequency-frequency limiting times × preset frequency reduction correction value.
The initial frequency limiting frequency refers to the frequency of a compressor when the air conditioner starts to operate from starting and the exhaust temperature rises for the first time to trigger a first temperature threshold; the frequency limiting times refer to the times that the air conditioner starts to operate from starting, the exhaust temperature rises to trigger a first temperature threshold, the frequency limiting times are accumulated, even if the compressor stops, the frequency limiting times can be continuously calculated, and if the air conditioner stops, the frequency limiting times are cleared.
The value range of the preset frequency-reducing correction value b is 1Hz or more and less than or equal to 10Hz, and the embodiment does not specifically limit the value of the preset frequency-increasing correction value and the preset minimum frequency-limiting frequency, and can be set according to actual needs.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a compressor discharge temperature frequency-limiting control program is stored in the computer-readable storage medium, and steps implemented when the compressor discharge temperature frequency-limiting control program is executed by a processor may refer to the above embodiments of the compressor discharge temperature frequency-limiting control method of the present invention, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (16)
1. The frequency-limiting control method for the exhaust temperature of the compressor is characterized by comprising the following steps of:
detecting that the exhaust temperature rises to a first temperature threshold, controlling the compressor to start frequency reduction, and acquiring a first frequency limiting frequency, wherein the first frequency limiting frequency is smaller than the frequency of the compressor when the exhaust temperature rises to the first temperature threshold;
detecting that the exhaust temperature after the frequency reduction is reduced to a second temperature threshold value, and controlling the compressor to increase the frequency to the first frequency limiting frequency, wherein the second temperature threshold value is smaller than the first temperature threshold value;
and when detecting that the exhaust temperature is less than the second temperature threshold when the frequency of the compressor rises to the first frequency limiting frequency, controlling the compressor to operate at the first frequency limiting frequency.
2. The compressor discharge temperature frequency limiting control method of claim 1 further comprising, after said step of controlling the compressor to operate at said first frequency limiting frequency:
detecting that the exhaust temperature is still smaller than the second temperature threshold when the compressor runs at the first frequency limiting frequency for a preset time, and acquiring a second frequency limiting frequency according to the first frequency limiting frequency, wherein the second frequency limiting frequency is larger than the first frequency limiting frequency;
and controlling the compressor to increase the frequency from the first frequency limiting frequency to the second frequency limiting frequency, monitoring the exhaust temperature in the frequency increasing process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature.
3. The compressor discharge temperature frequency limiting control method as claimed in claim 2, wherein the step of obtaining a second frequency limiting frequency according to the first frequency limiting frequency comprises:
and taking the sum of the first frequency limiting frequency and a preset frequency increasing correction value as a second frequency limiting frequency.
4. The method as claimed in claim 2, wherein the step of controlling the compressor to increase the frequency of the compressor from the first frequency limiting frequency to the second frequency limiting frequency, the step of monitoring the discharge temperature during the increasing, and the step of adjusting the frequency of the compressor and the frequency limiting frequency according to the discharge temperature comprises:
when the exhaust temperature is lower than the second temperature threshold value when the frequency of the compressor is increased to the second frequency limiting frequency, controlling the compressor to operate at the second frequency limiting frequency;
detecting that the exhaust temperature is still smaller than the second temperature threshold when the compressor runs at the second frequency limiting frequency for a preset time, and acquiring a third frequency limiting frequency according to the second frequency limiting frequency, wherein the third frequency limiting frequency is larger than the second frequency limiting frequency;
and controlling the compressor to increase the frequency from the second frequency limiting frequency to the third frequency limiting frequency, monitoring the exhaust temperature in the frequency increasing process, and adjusting the frequency of the compressor and the frequency limiting frequency according to the exhaust temperature.
5. The compressor discharge temperature frequency limiting control method as set forth in claim 1, wherein before said steps of detecting a rise in discharge temperature to a first temperature threshold, controlling the compressor to begin to ramp down, and acquiring a first frequency limiting frequency, further comprising:
and detecting that the exhaust temperature rises to a third temperature threshold value, acquiring the current operating frequency, and controlling the compressor to operate at the current operating frequency, wherein the third temperature threshold value is smaller than the first temperature threshold value and larger than the second temperature threshold value.
6. The compressor discharge temperature frequency limiting control method as set forth in claim 5, wherein after said steps of detecting a rise in discharge temperature to a third temperature threshold, obtaining a current operating frequency, and controlling the compressor to operate at said current operating frequency, further comprising:
and controlling the compressor to continuously operate at the current operating frequency if the detected exhaust temperature is greater than the third temperature threshold and less than the first temperature threshold.
7. The compressor discharge temperature frequency limiting control method as set forth in claim 1, wherein after said steps of detecting a rise in discharge temperature to a first temperature threshold, controlling the compressor to begin to ramp down, and acquiring a first frequency limiting frequency, further comprising:
detecting that the exhaust temperature rises to a fourth temperature threshold after the frequency reduction, controlling the compressor to stop, and monitoring the exhaust temperature, wherein the fourth temperature threshold is greater than the first temperature threshold;
detecting that the exhaust temperature of the compressor is reduced to a second temperature threshold value, starting the compressor and executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
8. The compressor discharge temperature frequency limiting control method as set forth in claim 1, further including, prior to said step of controlling the compressor up-frequency to said first frequency limiting frequency:
acquiring the compressor frequency and the demand frequency when the exhaust temperature is reduced to a second temperature threshold;
if the compressor frequency when the exhaust temperature is reduced to the second temperature threshold is less than the demand frequency, executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
9. The compressor discharge temperature frequency limiting control method of claim 8, wherein after said step of obtaining the compressor frequency and demand frequency at which the discharge temperature falls to the second temperature threshold, further comprising:
and if the frequency of the compressor when the exhaust temperature is reduced to the second temperature threshold value is greater than or equal to the demand frequency, controlling the compressor to operate at the demand frequency.
10. The compressor discharge temperature frequency limiting control method of claim 8, further comprising, prior to the step of controlling the compressor up-frequency to the first frequency limiting frequency:
comparing the required frequency with a first frequency limiting frequency;
if the first frequency limiting frequency is less than the required frequency, executing the following steps: and controlling the compressor to increase the frequency of the compressor to the first frequency limiting frequency.
11. The compressor discharge temperature frequency limiting control method of claim 10 further comprising, after said step of comparing the magnitude of said demand frequency to a first frequency limiting frequency:
if the first frequency limiting frequency is greater than or equal to the demand frequency, controlling the compressor to increase the frequency of the demand frequency;
and if the exhaust temperature when the frequency of the compressor is increased to the required frequency is less than the second temperature threshold value, controlling the compressor to operate at the required frequency.
12. The compressor discharge temperature frequency limiting control method as set forth in claim 1, wherein said step of obtaining a first frequency limiting frequency comprises:
determining a first frequency limiting frequency according to the difference between the compressor frequency when the exhaust temperature rises to a first temperature threshold value and a preset frequency reduction correction value; alternatively, the first and second electrodes may be,
acquiring the frequency limiting times and the initial frequency limiting frequency of the compressor;
and determining a first frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and a preset frequency reduction correction value.
13. The compressor discharge temperature frequency-limiting control method of claim 12, wherein the step of determining the first frequency-limiting frequency according to the difference between the current operating frequency when the discharge temperature rises to the first temperature threshold and the preset down-conversion correction value comprises:
taking the difference between the compressor frequency when the exhaust temperature rises to the first temperature threshold and a preset frequency reduction correction value as an alternative frequency limiting frequency;
determining a first frequency limiting frequency according to the alternative frequency limiting frequency and a preset minimum frequency limiting frequency;
or, the step of determining the first frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and the preset down-conversion correction value comprises:
determining alternative frequency limiting frequency according to the frequency limiting times, the initial frequency limiting frequency and a preset frequency reduction correction value;
and determining the first frequency limiting frequency according to the alternative frequency limiting frequency and the preset minimum frequency limiting frequency.
14. The compressor discharge temperature frequency limiting control method of claim 13 wherein the step of determining the first frequency limiting frequency based on the magnitude of the candidate frequency limiting frequency and the preset minimum frequency limiting frequency comprises:
if the alternative frequency limiting frequency is less than or equal to a preset minimum frequency limiting frequency, taking the preset minimum frequency limiting frequency as a first frequency limiting frequency;
and if the alternative frequency limiting frequency is greater than a preset minimum frequency limiting frequency, taking the alternative frequency limiting frequency as a first frequency limiting frequency.
15. An air conditioner, characterized in that the air conditioner comprises: a memory, a processor and a compressor discharge temperature frequency-limiting control program stored on the memory and operable on the processor, the compressor discharge temperature frequency-limiting control program when executed by the processor implementing the steps of the compressor discharge temperature frequency-limiting control method of any one of claims 1 to 14.
16. A computer readable storage medium, wherein the computer readable storage medium stores thereon a compressor discharge temperature frequency-limiting control program, which when executed by a processor implements the steps of the compressor discharge temperature frequency-limiting control method according to any one of claims 1 to 14.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611089A (en) * | 2020-12-21 | 2021-04-06 | 苏州金俊智能科技有限公司 | Control method for preventing air conditioner from repeatedly exhausting and protecting |
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Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0688640A (en) * | 1992-09-08 | 1994-03-29 | Fujitsu General Ltd | Controller for air conditioner |
| JP3555600B2 (en) * | 2001-08-13 | 2004-08-18 | ダイキン工業株式会社 | Air conditioner |
| CN101769584A (en) * | 2010-01-13 | 2010-07-07 | 宁波奥克斯空调有限公司 | Method for intelligently controlling frequency of variable-frequency air-conditioner |
| CN104566826A (en) * | 2014-12-31 | 2015-04-29 | 广东美的制冷设备有限公司 | Variable-frequency air conditioner, method and device of controlling compressor |
| CN105222441A (en) * | 2015-09-01 | 2016-01-06 | 珠海格力电器股份有限公司 | The control method of refrigeration system and device |
| CN105276882A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Exhaust gas temperature control method for condensing unit |
| CN105716203A (en) * | 2016-03-03 | 2016-06-29 | 海信（山东）空调有限公司 | Method for controlling minimum frequency of variable frequency air conditioner |
| CN106152428A (en) * | 2016-09-29 | 2016-11-23 | 广东美的制冷设备有限公司 | Secondary refrigerant leakage protection control method, controller and air-conditioning |
| CN106286256A (en) * | 2016-08-26 | 2017-01-04 | 珠海格力电器股份有限公司 | Protectiveness control method, device and the air conditioning system of a kind of compressor |
| CN106322639A (en) * | 2015-06-30 | 2017-01-11 | 青岛海尔空调器有限总公司 | Exhaust temperature frequency limiting protection and control method for air conditioner |
| CN106642532A (en) * | 2016-11-16 | 2017-05-10 | 海信（山东）空调有限公司 | Air conditioner control method |
| CN106766376A (en) * | 2016-12-30 | 2017-05-31 | 珠海格力电器股份有限公司 | A kind of source pump adjusting method, device and air-conditioning |
| CN106839260A (en) * | 2016-12-12 | 2017-06-13 | 广东芬尼克兹节能设备有限公司 | One kind exhaust protection control method and system |
| CN107036256A (en) * | 2017-05-31 | 2017-08-11 | 广东美的制冷设备有限公司 | The control method of delivery temperature, the control device of delivery temperature and air conditioner |
| CN107091517A (en) * | 2017-06-30 | 2017-08-25 | 珠海格力电器股份有限公司 | Protection control method, device and the air-conditioner set of air-conditioner set |
| CN107940694A (en) * | 2017-11-16 | 2018-04-20 | 珠海格力电器股份有限公司 | The exhaust protection control method and system of a kind of air conditioner |
| CN108518806A (en) * | 2018-05-21 | 2018-09-11 | 广东美的暖通设备有限公司 | Progress control method, device, compressor, air conditioner and readable storage medium storing program for executing |
| JP2018141599A (en) * | 2017-02-28 | 2018-09-13 | 株式会社富士通ゼネラル | Air conditioning device |
| CN109323383A (en) * | 2018-09-12 | 2019-02-12 | 奥克斯空调股份有限公司 | Convertible frequency air-conditioner is in the control method of special mounting environment, control device and air conditioner |
| US20190226709A1 (en) * | 2018-01-24 | 2019-07-25 | Lennox Industries Inc. | HVAC Bypass Control |
| CN110057060A (en) * | 2019-03-19 | 2019-07-26 | 青岛海尔空调器有限总公司 | The control method and air conditioner that frequency for compressor of air conditioner is adjusted |
| CN110410972A (en) * | 2019-07-25 | 2019-11-05 | 宁波奥克斯电气股份有限公司 | A kind of control method, device and the air conditioner of air conditioner delivery temperature |
| CN110595015A (en) * | 2019-09-25 | 2019-12-20 | 珠海格力电器股份有限公司 | Adjusting method and device of frequency conversion equipment |
| CN110631234A (en) * | 2019-09-30 | 2019-12-31 | 广东美的暖通设备有限公司 | Control method of air conditioner operation frequency, air conditioner and computer readable storage medium |
-
2020
- 2020-03-27 CN CN202010234206.6A patent/CN111380185B/en active Active
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0688640A (en) * | 1992-09-08 | 1994-03-29 | Fujitsu General Ltd | Controller for air conditioner |
| JP3555600B2 (en) * | 2001-08-13 | 2004-08-18 | ダイキン工業株式会社 | Air conditioner |
| CN101769584A (en) * | 2010-01-13 | 2010-07-07 | 宁波奥克斯空调有限公司 | Method for intelligently controlling frequency of variable-frequency air-conditioner |
| CN104566826A (en) * | 2014-12-31 | 2015-04-29 | 广东美的制冷设备有限公司 | Variable-frequency air conditioner, method and device of controlling compressor |
| CN106322639A (en) * | 2015-06-30 | 2017-01-11 | 青岛海尔空调器有限总公司 | Exhaust temperature frequency limiting protection and control method for air conditioner |
| CN105222441A (en) * | 2015-09-01 | 2016-01-06 | 珠海格力电器股份有限公司 | The control method of refrigeration system and device |
| CN105276882A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Exhaust gas temperature control method for condensing unit |
| CN105716203A (en) * | 2016-03-03 | 2016-06-29 | 海信（山东）空调有限公司 | Method for controlling minimum frequency of variable frequency air conditioner |
| CN106286256A (en) * | 2016-08-26 | 2017-01-04 | 珠海格力电器股份有限公司 | Protectiveness control method, device and the air conditioning system of a kind of compressor |
| CN106152428A (en) * | 2016-09-29 | 2016-11-23 | 广东美的制冷设备有限公司 | Secondary refrigerant leakage protection control method, controller and air-conditioning |
| CN106642532A (en) * | 2016-11-16 | 2017-05-10 | 海信（山东）空调有限公司 | Air conditioner control method |
| CN106839260A (en) * | 2016-12-12 | 2017-06-13 | 广东芬尼克兹节能设备有限公司 | One kind exhaust protection control method and system |
| CN106766376A (en) * | 2016-12-30 | 2017-05-31 | 珠海格力电器股份有限公司 | A kind of source pump adjusting method, device and air-conditioning |
| JP2018141599A (en) * | 2017-02-28 | 2018-09-13 | 株式会社富士通ゼネラル | Air conditioning device |
| CN107036256A (en) * | 2017-05-31 | 2017-08-11 | 广东美的制冷设备有限公司 | The control method of delivery temperature, the control device of delivery temperature and air conditioner |
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