CN108917121A - Air conditioner and its control method and control device - Google Patents

Air conditioner and its control method and control device Download PDF

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Publication number
CN108917121A
CN108917121A CN201810780976.3A CN201810780976A CN108917121A CN 108917121 A CN108917121 A CN 108917121A CN 201810780976 A CN201810780976 A CN 201810780976A CN 108917121 A CN108917121 A CN 108917121A
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Prior art keywords
frequency
air conditioner
frequency hopping
hopping band
band
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CN201810780976.3A
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CN108917121B (en
Inventor
孙方华
扶胜根
廖哲永
郑根
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Aux Air Conditioning Co Ltd
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Aux Air Conditioning Co Ltd
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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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The present invention provides a kind of air conditioner and its control method and control devices, wherein the air-conditioner control method includes：Step S1, determine that air conditioner enters the frequency of frequency hopping band；And step S2, the frequency control air conditioner that enters according to the air conditioner frequency hopping band are run according to target operating parameters.Air conditioner provided by the invention and its control method and control device effectively prevent room temperature and fluctuation influence user's comfort occur, also avoid leading to problems such as frequency-changeable compressor/DC fan overshoot cause system protection due to the frequent control of frequency hopping band.

Description

Air conditioner and control method and control device thereof
Technical Field
The invention relates to the technical field of air conditioning, in particular to an air conditioner and a control method and a control device thereof.
Background
The air conditioner is easy to generate resonance due to the complexity of a system and a pipeline, so that the service life of the pipeline is influenced, sometimes, a frequency hopping processing mode is adopted for the variable frequency compressor/the direct current fan in order to avoid the resonance of the structures such as the pipeline, and the like, namely: the frequency/rotation speed of a certain interval is not executed, the interval (the interval is called as a hop band hereinafter) is skipped, and the execution is directly executed according to the upper limit or the lower limit of the hop band. However, the frequency hopping band control is similar to the sudden change of the adjustment rotating speed, so that the system capacity fluctuation is large, the indoor temperature is easy to fluctuate greatly, and the user comfort is influenced; the fluctuation of the indoor temperature can cause frequent increase and decrease of the frequency of the compressor, and the reliability and the stability of the air conditioner are influenced.
Disclosure of Invention
In view of the above, the present invention is directed to an air conditioner, a control method and a control device thereof, so as to avoid the problem that the comfort of a user is affected by a large fluctuation of an indoor temperature, and avoid the problem that an inverter compressor/a dc fan is overshot due to frequent control of a frequency hopping band, which causes system protection.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an air conditioner control method comprising:
step S1, determining the frequency of the air conditioner entering the frequency hopping band; and
and step S2, controlling the air conditioner to operate according to the target operation parameters according to the frequency of the air conditioner entering the frequency hopping band.
Further, the step S1 includes determining a variation trend of the air conditioner operation parameter;
the step S2 further includes controlling the air conditioner to operate according to the target operation parameters according to the frequency of the air conditioner entering the frequency hopping band if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold; otherwise, controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner.
Further, the step S1 further includes determining a length of the frequency hopping band;
the step S2 further includes controlling the air conditioner to operate according to the target operation parameter according to the length of the frequency hopping band or the frequency of the air conditioner entering the frequency hopping band if the length of the frequency hopping band exceeds a length threshold and the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold;
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band does not exceed a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band;
and if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold and the length of the frequency hopping band does not exceed a length threshold, controlling the air conditioner to operate according to the target operation parameters according to the frequency of the air conditioner entering the frequency hopping band.
Further, the step S1 includes determining a variation trend of the air conditioner operation parameter and a length of the frequency hopping band;
the step S2 further includes controlling the air conditioner to operate according to the target operation parameter according to the length of the frequency hopping band or the frequency of the air conditioner entering the frequency hopping band if the length of the frequency hopping band exceeds a length threshold and the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold;
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band does not exceed a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band;
if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold and the length of the frequency hopping band does not exceed a length threshold, controlling the air conditioner to operate according to target operation parameters according to the frequency of the air conditioner entering the frequency hopping band;
otherwise, controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner.
Further, the operation parameters are the rotating speed of the variable frequency compressor, the rotating speed of the direct current fan, the frequency of the variable frequency compressor and the frequency of the direct current fan;
the change trend is an increasing trend and a decreasing trend;
the target operation parameters are a target variable frequency compressor rotating speed, a target direct current fan rotating speed, a target variable frequency compressor frequency and a target direct current fan frequency.
Further, the air conditioner is controlled to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner:
if the variation trend of the air conditioner operation parameters is an ascending trend within T1 time before entering the current frequency band, adjusting the target operation parameters of the air conditioner according to the upper limit value of the current frequency band;
and if the variation trend of the air conditioner operation parameters is a decreasing trend within the time T1 before entering the current frequency band, adjusting the target operation parameters of the air conditioner according to the lower limit value of the current frequency band.
Further, controlling the target compressor/fan frequency of the air conditioner according to the variation trend of the compressor/fan frequency of the air conditioner; wherein,
if the compressor/fan frequency is in the rising trend within the time T1 before entering the current frequency hopping band, controlling the target compressor/fan frequency fTarget＝fmax+a；
If the compressor/fan frequency is in a decreasing trend within T1 time before entering the current frequency hopping band, controlling the target compressor/fan frequency fTarget＝fmin-b；
Wherein f ismaxFor this frequency hopping band the upper limit of the frequency, fminThe frequency lower limit value of the frequency hopping band is the frequency lower limit value of the current frequency hopping band; a. b are all constants.
Further, controlling the target compressor/fan frequency of the air conditioner according to the variation trend of the compressor/fan frequency of the air conditioner; wherein,
if the frequency of the compressor/fan is in the rising trend within T1 time before entering the current frequency hopping band and the current frequency hopping band enters the frequency hopping band through the lower limit of the frequency hopping band, the frequency of the target compressor/fan is fTarget＝fmax+a1；
If the frequency of the compressor/fan is in the rising trend within the time T1 before entering the frequency hopping band and the frequency hopping band entering the frequency hopping band enters the frequency hopping band through the upper limit of the frequency hopping band, the frequency of the target compressor/fan is fTarget＝fmax+a2；
If the frequency of the compressor/fan is in a decreasing trend within T1 time before entering the frequency hopping band and the frequency hopping band entering the frequency hopping band enters the frequency hopping band through the upper limit of the frequency hopping band, the frequency of the target compressor/fan is fTarget＝fmin-b1；
If the frequency of the compressor/fan is in a decreasing trend within T1 time before entering the current hop frequency band and the current hop frequency band enters the hop frequency band through the lower limit of the hop frequency band, the target pressure is setCompressor/fan frequency fTarget＝fmin-b2；
Wherein f ismaxFor this frequency hopping band the upper limit of the frequency, fminThe frequency lower limit value of the frequency hopping band is the frequency lower limit value of the current frequency hopping band; a1, a2, b1, b2 are all constants.
Further, if the length L of the one-hop frequency band exceeds a length threshold LmaxThen the target compressor/fan frequency f is controlled each time this frequency hopping band is passedTargetThe adjustment is performed after maintaining at a predetermined frequency for a time T2.
Further, when entering a frequency hopping band, controlling the frequency of a target compressor/fan according to the frequency of the air conditioner entering the frequency hopping band: if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold, controlling the target compressor/fan frequency f when the compressor/fan frequency rises againTargetIt is maintained at a predetermined frequency for a time period T4 and then raised.
Further, the preset frequency is fmin-c，fminC is a constant for the lower limit value of the frequency hopping band; t4 is between 5 minutes and 30 minutes; t2 is m × L + n, m is a coefficient of relationship, and n is a constant.
The calculation formula of the frequency k of the air conditioner entering the frequency hopping band is as follows: k is N/T3; wherein, T3 is any continuous time, and N is the accumulated number of times of the air conditioner entering the frequency band due to the protective adjustment in the continuous time.
An air conditioner control device comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the computer program realizes the air conditioner control method when being executed by the processor.
An air conditioner comprises the air conditioner control device.
Compared with the prior art, the air conditioner and the control method and device thereof have the following advantages:
the target operation parameters of the air conditioner are adjusted according to the frequency of the air conditioner entering the frequency hopping band, and system protection caused by the problems of frequency conversion compressor/direct current fan over-regulation and the like due to frequent frequency control of the frequency hopping band is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart illustrating a control method of an air conditioner according to a first embodiment of the present invention.
Fig. 2 is a flowchart illustrating a control method of an air conditioner according to a second embodiment of the present invention.
Fig. 3 is a flowchart illustrating a control method of an air conditioner according to a third embodiment of the present invention.
Fig. 4 is a flowchart illustrating a control method of an air conditioner according to a fourth embodiment of the present invention.
Fig. 5 is a flowchart illustrating a control method of an air conditioner according to a fifth embodiment of the present invention.
Fig. 6 is a flowchart illustrating a control method of an air conditioner according to a sixth embodiment of the present invention.
Fig. 7 is a flowchart illustrating a control method of an air conditioner according to a seventh embodiment of the present invention.
FIG. 8 is a block diagram of an air conditioner control device according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
First, first embodiment
The present embodiment provides an air conditioner control method, as shown in fig. 1, the air conditioner control method includes:
determining the variation trend of the operation parameters of the air conditioner; and
and when entering a frequency hopping band, controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner.
Specifically, the operating parameters include a rotating speed and a frequency; the rotating speed is the rotating speed of the variable frequency compressor and the rotating speed of the direct current fan; the frequency is the frequency of a variable frequency compressor and the frequency of a direct current fan; the change trend is a change trend of the operating parameters of the air conditioner in a certain time before entering the frequency band of the current hop, such as an increasing trend and a decreasing trend. The target operation parameters are a target variable frequency compressor rotating speed, a target direct current fan rotating speed, a target variable frequency compressor frequency and a target direct current fan frequency.
In the air conditioner control method, the air conditioner is controlled to operate according to target operation parameters according to the variation trend of the air conditioner operation parameters:
if the variation trend of the air conditioner operation parameters is an ascending trend within T1 time before entering the current frequency band, adjusting the target operation parameters of the air conditioner according to the upper limit value of the current frequency band;
and if the variation trend of the air conditioner operation parameters is a decreasing trend within the time T1 before entering the current frequency band, adjusting the target operation parameters of the air conditioner according to the lower limit value of the current frequency band.
The following specifically describes the air conditioner control method of this embodiment by using an example of controlling the air conditioner to operate according to the target compressor frequency according to the variation trend of the air conditioner compressor frequency (similar to the control of the air conditioner to operate according to the target fan frequency according to the variation trend of the air conditioner fan frequency):
if the compressor frequency is in the rising trend within the time T1 before entering the current frequency hopping band, controlling the air conditioner to follow the target compressor frequency fTarget＝fmax+ a operation;
if the compressor frequency is in a decreasing trend within T1 time before entering the current frequency hopping band, controlling the air conditioner to follow the target compressor frequency fTarget＝fmin-b running;
wherein f ismaxFor this frequency hopping band the upper limit of the frequency, fminThe frequency lower limit value of the frequency hopping band is the frequency lower limit value of the current frequency hopping band; a. b is constant, a and b can be same or different. T1 may be between 30 and 120 seconds, with T1 being preferably 60 seconds.
In addition, besides the control mode, the air conditioner can be controlled to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner and the mode that the air conditioner enters the frequency hopping band, so that more refined control can be realized.
Similarly, the following specifically describes the air conditioner control method according to the embodiment by taking the example of controlling the target compressor frequency of the air conditioner according to the variation trend of the compressor frequency of the air conditioner:
if the compressor frequency is in the rising trend within the time T1 before entering the current hop frequency band and the current hop frequency band enters the hop frequency band through the lower limit of the hop frequency band, controlling the target compressor frequency fTarget＝fmax+a1；
If the compressor frequency is in the rising trend within the time T1 before entering the current frequency hopping band and the current frequency hopping band enters the frequency hopping band through the upper limit of the frequency hopping band, controlling the target compressor frequency fTarget＝fmax+a2；
If the compressor frequency is in a decreasing trend within the time T1 before entering the current hop frequency band and the current hop frequency band enters the hop frequency band through the upper limit of the hop frequency band, controlling the target compressor frequency fTarget＝fmin-b1；
If the compressor frequency is in a decreasing trend within T1 time before entering the current hop frequency band and the current hop frequency band enters the hop frequency band through the lower limit of the hop frequency band, controlling the target compressor frequency fTarget＝fmin-b2；
Wherein f ismaxFor this frequency hopping band the upper limit of the frequency, fminThe frequency lower limit value of the frequency hopping band is the frequency lower limit value of the current frequency hopping band; a1, a2, b1, b2 are all constants. a1, a2, b1 and b2 may be the same or different, and preferably, a 1-a 2-b 1-b 2-1.
By processing frequency hopping according to the variation trend of the air conditioner operation parameters, the problem of large capacity fluctuation caused by processing according to a fixed value is effectively avoided.
Of course, similar to the above-mentioned control of the target compressor frequency of the air conditioner according to the variation trend of the compressor frequency of the air conditioner, the present invention may also control the target rotation speed of the air conditioner according to the variation trend of the rotation speed of the air conditioner, etc., and thus, the details are not repeated herein.
In a specific example of the control method according to the first embodiment, when the capacity (the cooling capacity of the air conditioner) changes and the rotation speed of the inverter compressor/dc fan needs to enter the frequency hopping band (for example, 35Hz to 40Hz is the frequency hopping band range), the following is performed according to the trend of the rotation speed change (increase/decrease) in the previous 60 seconds:
if the rotating speed is in the rising trend within the previous 60 seconds and enters the frequency hopping band after 35Hz (namely the lower limit value of the frequency hopping band) at this time, controlling the rotating speed corresponding to the target rotating speed execution frequency of 41Hz (namely the upper limit value of the frequency hopping band +1) when entering the frequency hopping band;
if the rotating speed is in a decreasing trend within the previous 60 seconds and enters the frequency hopping band through 40Hz (namely the upper limit value of the frequency hopping band), controlling the rotating speed corresponding to the target rotating speed execution frequency of 34Hz (namely the lower limit value-1 of the frequency hopping band) when entering the frequency hopping band;
if the rotating speed is in the rising trend within the previous 60 seconds and the frequency band enters the hopping frequency band after 40Hz (namely the upper limit value of the hopping frequency band), controlling the rotating speed corresponding to the target rotating speed execution frequency of 41Hz (namely the upper limit value of the hopping frequency band +1) when the frequency band enters the hopping frequency band;
if the rotating speed is in a decreasing trend within the previous 60 seconds and enters the frequency hopping band after 35Hz (namely, the lower limit value of the frequency hopping band) at this time, the rotating speed corresponding to the execution frequency of the target rotating speed is controlled to be 34Hz (namely, the lower limit value of the frequency hopping band is-1) when the frequency hopping band is entered.
Second and third embodiments
The present embodiment provides an air conditioner control method, as shown in fig. 2, the air conditioner control method includes:
determining the length of a frequency hopping band; and
and when entering a frequency hopping band, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band.
Specifically, the target compressor frequency is controlled according to the length of the frequency hopping band: if the length L of one hop frequency band exceeds a length threshold LmaxThen the target compressor/fan frequency f is controlled each time this frequency hopping band is passedTargetAfter maintaining at a predetermined frequency for a time T2, adjustment is performed
More specifically, if the length L of the frequency hopping band exceeds a length threshold LmaxThen the target compressor frequency f is controlled each time the frequency band jump is passedTargetIs maintained at fminThe adjustment is performed after time T2 at c. Wherein f isminC is a constant and is the frequency lower limit value of the frequency hopping band at this time; l ismaxUsually between 4 and 10Hz, preferably, LmaxIs 6 Hz; t2 satisfies the following relationship: t2 ═ f (L), f (L) is a function positively correlated to the frequency hopping band length L, for example, f (L) ═ m × L + n, m is between 1 and 3, n is between 2 and 24, preferably, m is 1, n is 5; c is between 1 and 3, preferably c is 1.
Therefore, the target operation parameters of the air conditioner are controlled in a stable transition mode mainly aiming at the condition that the frequency hopping band is long, and the influence on the comfort of a user caused by large fluctuation of the indoor temperature is avoided.
In a specific example of the control method according to the second embodiment, if the frequency hopping band is 35Hz to 42Hz, L ismaxWhen the length L of the frequency hopping band is 8Hz, L is larger than Lmax(T2 ═ f (L) ═ m × L + n, and if m is 1 and n is 5, then T2 is 13 minutes), it is necessary to wait 13 minutes at 34Hz (i.e., lower limit-1 of this frequency hopping band) and then perform adjustment (except for special control) every time the frequency hopping band (35Hz to 42Hz) passes.
Third and fourth embodiments
The present embodiment provides an air conditioner control method, as shown in fig. 3, the air conditioner control method includes:
determining the frequency of the air conditioner entering a frequency hopping band; and
and controlling the air conditioner to operate according to the target operation parameters according to the frequency.
Wherein, the frequency k of the air conditioner entering the jump frequency band satisfies the following relational expression: and k is N/T3, T3 is any continuous time, and N is the accumulated number of times that the air conditioner enters the frequency hopping band due to the protective regulation in the continuous time.
Specifically, when entering a frequency hopping band, the target compressor/fan frequency is controlled according to the frequency of the air conditioner entering the frequency hopping band: if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold, controlling the target compressor/fan frequency f when the compressor/fan frequency rises againTargetIt is maintained at a predetermined frequency for a time period T4 and then raised.
More specifically, a target compressor frequency is controlled according to the frequency; if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold (at a certain time of the selected continuous time T3, the frequency is determined by N, that is, the cumulative frequency N of the air conditioner entering the frequency hopping band due to the protective regulation exceeds a time threshold N within a continuous timemax) Then, when the compressor frequency rise again occurs, the control target compressor frequency is maintained at fminC after time T4And (4) rising. Wherein, T3 is between 20 minutes and 50 minutes, and the preferable T3 is 30 minutes. T4 is between 5 and 30 minutes, with T4 being preferably 10 minutes. At 30 min T3, NmaxGenerally between 2 and 6, preferably NmaxIs set to 3.
The target operation parameters of the air conditioner are adjusted according to the frequency of the air conditioner entering the frequency hopping band, and system protection caused by the problems of frequency conversion compressor/direct current fan over-regulation and the like due to frequent frequency control of the frequency hopping band is avoided.
In a specific example of the control method according to the third embodiment, the frequency hopping band range to be entered by the air conditioner is 35Hz to 40Hz, c is 1, and if the frequency hopping band is entered 10 times in a continuous period of 30 minutes due to system protective adjustment/compressor protective adjustment, etc., then the speed increase needs to be performed after waiting 10 minutes at the current frequency of 34Hz when the speed increase occurs again.
Fourth and fourth embodiments
The present embodiment provides an air conditioner control method, as shown in fig. 4, the air conditioner control method includes:
determining the variation trend of the operating parameters of the air conditioner and the length of a frequency hopping band;
if the length of the frequency hopping band exceeds a length threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band; otherwise, if the length of the frequency hopping band does not exceed a length threshold, controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner.
In this embodiment, the specific adjusting process for controlling the air conditioner to operate according to the target operation parameter according to the length of the frequency hopping band and controlling the air conditioner to operate according to the target operation parameter according to the variation trend of the operation parameter of the air conditioner is the same as that in the foregoing embodiment, and details are not repeated here.
According to the embodiment, the frequency hopping is processed according to the variation trend of the operating parameters of the air conditioner, the problem that the fluctuation of the refrigerating/heating capacity of the air conditioner is large due to the fact that the existing frequency hopping is processed according to a fixed value is solved, the target operating parameters of the air conditioner are controlled in a stable transition mode aiming at the condition that the frequency hopping band is long, and the phenomenon that the large fluctuation of the indoor temperature affects the comfort of a user is avoided.
Fifth and fifth embodiments
The present embodiment provides an air conditioner control method, as shown in fig. 5, the air conditioner control method includes:
determining the variation trend of the operating parameters of the air conditioner and the frequency of the air conditioner entering a frequency hopping band;
if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold, controlling the air conditioner to operate according to target operation parameters according to the frequency of the air conditioner entering the frequency hopping band; otherwise, if the frequency of the air conditioner entering the frequency hopping band does not exceed a frequency threshold, controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner.
In this embodiment, the specific adjustment process for controlling the air conditioner to operate according to the target operation parameter according to the frequency of the air conditioner entering the frequency hopping band and controlling the air conditioner to operate according to the target operation parameter according to the variation trend of the operation parameter of the air conditioner is the same as that in the foregoing embodiment, and details are not repeated here.
The frequency hopping is processed according to the variation trend of the air conditioner operation parameters, the problem that the fluctuation of the refrigeration/heating capacity of the air conditioner is large due to the fact that the existing frequency hopping is processed according to a fixed value is solved, the target operation parameters of the air conditioner are adjusted according to the frequency of the air conditioner entering a frequency hopping band, and the problem that the frequency conversion compressor/direct current fan is out of regulation due to the frequent control of the frequency hopping band is solved
Sixth and sixth embodiments
The present embodiment provides an air conditioner control method, as shown in fig. 6, the air conditioner control method includes:
determining the length of a frequency hopping band and the frequency of entering the frequency hopping band by the air conditioner;
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band or the frequency of the air conditioner entering the frequency hopping band;
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band does not exceed a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band;
and if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold and the length of the frequency hopping band does not exceed a length threshold, controlling the air conditioner to operate according to the target operation parameters according to the frequency of the air conditioner entering the frequency hopping band.
In this embodiment, the specific adjustment process for controlling the air conditioner to operate according to the target operation parameter according to the length of the frequency hopping band and controlling the air conditioner to operate according to the target operation parameter according to the frequency of the air conditioner entering the frequency hopping band is the same as that in the foregoing embodiment, and details are not repeated here.
Seventh, seventh embodiment
The present embodiment provides an air conditioner control method, as shown in fig. 7, the air conditioner control method includes:
determining the variation trend of the operating parameters of the air conditioner, the length of a frequency hopping band and the frequency of the air conditioner entering the frequency hopping band;
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band or the frequency of the air conditioner entering the frequency hopping band;
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band does not exceed a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band;
if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold and the length of the frequency hopping band does not exceed a length threshold, controlling the air conditioner to operate according to target operation parameters according to the frequency of the air conditioner entering the frequency hopping band;
otherwise, controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner.
In this embodiment, the specific adjustment process of controlling the air conditioner to operate according to the target operation parameter according to the variation trend of the operation parameter of the air conditioner, controlling the air conditioner to operate according to the target operation parameter according to the length of the frequency hopping band, and controlling the air conditioner to operate according to the target operation parameter according to the frequency of the air conditioner entering the frequency hopping band is the same as that in the foregoing embodiment, and details are not repeated here.
The present embodiment further provides an air conditioner control device, as shown in fig. 8, the air conditioner control device includes a processor, a memory, and a computer program stored in the memory and operable on the processor, and the computer program implements the air conditioner control method when executed by the processor.
In addition, the invention also provides an air conditioner which comprises the air conditioner control device.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (13)

1. An air conditioner control method, comprising:
step S1, determining the frequency of the air conditioner entering the frequency hopping band; and
and step S2, controlling the air conditioner to operate according to the target operation parameters according to the frequency of the air conditioner entering the frequency hopping band.
2. The air conditioner control method according to claim 1, characterized in that:
the step S1 further includes determining a variation trend of the air conditioner operation parameter;
the step S2 further includes controlling the air conditioner to operate according to the target operation parameters according to the frequency of the air conditioner entering the frequency hopping band if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold; otherwise, controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner.
3. The air conditioner control method according to claim 1, characterized in that:
the step S1 further includes determining a length of a hop band;
the step S2 further includes:
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band or the frequency of the air conditioner entering the frequency hopping band;
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band does not exceed a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band;
and if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold and the length of the frequency hopping band does not exceed a length threshold, controlling the air conditioner to operate according to the target operation parameters according to the frequency of the air conditioner entering the frequency hopping band.
4. The air conditioner control method according to claim 1, characterized in that:
the step S1 further includes determining the variation trend of the air conditioner operation parameters and the length of the frequency hopping band;
the step S2 further includes:
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band or the frequency of the air conditioner entering the frequency hopping band;
if the length of the frequency hopping band exceeds a length threshold value and the frequency of the air conditioner entering the frequency hopping band does not exceed a frequency threshold value, controlling the air conditioner to operate according to target operation parameters according to the length of the frequency hopping band;
if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold and the length of the frequency hopping band does not exceed a length threshold, controlling the air conditioner to operate according to target operation parameters according to the frequency of the air conditioner entering the frequency hopping band;
otherwise, controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner.
5. The air conditioner controlling method according to any one of claims 1 to 4,
the operation parameters are the rotating speed of the variable frequency compressor, the rotating speed of the direct current fan, the frequency of the variable frequency compressor and the frequency of the direct current fan;
the change trend is an increasing trend and a decreasing trend;
the target operation parameters are a target variable frequency compressor rotating speed, a target direct current fan rotating speed, a target variable frequency compressor frequency and a target direct current fan frequency.
6. The air conditioner controlling method according to claim 2 or 4,
controlling the air conditioner to operate according to the target operation parameters according to the variation trend of the operation parameters of the air conditioner:
if the variation trend of the air conditioner operation parameters is an ascending trend within T1 time before entering the current frequency band, adjusting the target operation parameters of the air conditioner according to the upper limit value of the current frequency band;
and if the variation trend of the air conditioner operation parameters is a decreasing trend within the time T1 before entering the current frequency band, adjusting the target operation parameters of the air conditioner according to the lower limit value of the current frequency band.
7. The air conditioner controlling method according to claim 6, wherein an air conditioner target compressor/fan frequency is controlled according to a variation tendency of the air conditioner compressor/fan frequency; wherein,
if the compressor/fan frequency is in the rising trend within the time T1 before entering the current frequency hopping band, controlling the target compressor/fan frequency fTarget＝fmax+a；
If the compressor/fan frequency is in a decreasing trend within T1 time before entering the current frequency hopping band, controlling the target compressor/fan frequency fTarget＝fmin-b；
Wherein f ismaxFor this frequency hopping band the upper limit of the frequency, fminThe frequency lower limit value of the frequency hopping band is the frequency lower limit value of the current frequency hopping band; a. b are all constants.
8. The air conditioner controlling method according to claim 7, wherein an air conditioner target compressor/fan frequency is controlled according to a variation tendency of the air conditioner compressor/fan frequency; wherein,
if the frequency of the compressor/fan is in the rising trend within T1 time before entering the current frequency hopping band and the current frequency hopping band enters the frequency hopping band through the lower limit of the frequency hopping band, the frequency of the target compressor/fan is fTarget＝fmax+a1；
If the frequency of the compressor/fan is in the rising trend within the time T1 before entering the frequency hopping band and the frequency hopping band entering the frequency hopping band enters the frequency hopping band through the upper limit of the frequency hopping band, the frequency of the target compressor/fan is fTarget＝fmax+a2；
If the frequency of the compressor/fan is in a decreasing trend within T1 time before entering the frequency hopping band and the frequency hopping band entering the frequency hopping band enters the frequency hopping band through the upper limit of the frequency hopping band, the frequency of the target compressor/fan is fTarget＝fmin-b1；
If the frequency of the compressor/fan is in a decreasing trend within T1 time before entering the current frequency hopping band and the current frequency hopping band enters the frequency hopping band through the lower limit of the frequency hopping band, the frequency of the target compressor/fan is fTarget＝fmin-b2；
Wherein f ismaxIs the current jumpUpper limit of frequency band, fminThe frequency lower limit value of the frequency hopping band is the frequency lower limit value of the current frequency hopping band; a1, a2, b1, b2 are all constants.
9. The air conditioner controlling method according to claim 3 or 4,
if the length L of one hop frequency band exceeds a length threshold LmaxThen the target compressor/fan frequency f is controlled each time this frequency hopping band is passedTargetThe adjustment is performed after maintaining at a predetermined frequency for a time T2.
10. The air conditioner controlling method according to any one of claims 1 to 4,
when entering a frequency hopping band, controlling the frequency of a target compressor/fan according to the frequency of the air conditioner entering the frequency hopping band: if the frequency of the air conditioner entering the frequency hopping band exceeds a frequency threshold, controlling the target compressor/fan frequency f when the compressor/fan frequency rises againTargetIt is maintained at a predetermined frequency for a time period T4 and then raised.
11. The air conditioner controlling method according to claim 9 or 10,
the preset frequency is fmin-c，fminC is a constant for the lower limit value of the frequency hopping band; t4 is between 5 minutes and 30 minutes; t2 ═ m × L + n, m is a coefficient of relationship, and n is a constant;
the calculation formula of the frequency k of the air conditioner entering the frequency hopping band is as follows: k is N/T3; wherein, T3 is any continuous time, and N is the accumulated number of times of the air conditioner entering the frequency band due to the protective adjustment in the continuous time.
12. An air conditioner control apparatus comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the air conditioner control method according to any one of claims 1 to 11.
13. An air conditioner characterized by comprising the air conditioner control device according to claim 12.
CN201810780976.3A 2018-07-16 2018-07-16 Air conditioner and control method and control device thereof Active CN108917121B (en)

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