CN113719965A - Frequency control method and device of compressor and variable frequency air conditioner - Google Patents

Frequency control method and device of compressor and variable frequency air conditioner Download PDF

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Publication number
CN113719965A
CN113719965A CN202110940844.4A CN202110940844A CN113719965A CN 113719965 A CN113719965 A CN 113719965A CN 202110940844 A CN202110940844 A CN 202110940844A CN 113719965 A CN113719965 A CN 113719965A
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compressor
target frequency
temperature
frequency
analysis result
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CN113719965B (en
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史志斌
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • 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
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air

Abstract

The invention provides a frequency control method and device of a compressor and a variable frequency air conditioner. Wherein, the method comprises the following steps: when the compressor is stopped at the temperature for the first time, acquiring a temperature-reaching stop parameter; judging whether the compressor meets preset correction control conditions or not based on the temperature-reaching shutdown parameters; if so, the target frequency of the compressor is corrected, the compressor is controlled to operate according to the corrected target frequency, the compressor is prevented from frequently stopping due to temperature rise through correcting the target frequency of the compressor, automatic control of an energy-saving and comfortable function of the variable frequency air conditioner is achieved, the comfortable experience of a user is improved, and the practical value is good.

Description

Frequency control method and device of compressor and variable frequency air conditioner
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a frequency control method and device of a compressor and a variable frequency air conditioner.
Background
At present, in order to achieve the purposes of energy conservation and comfort, most of the existing temperature control modes of the variable frequency air conditioner are shutdown when reaching the temperature, namely the air conditioner is shut down when the indoor environment temperature reaches the remote control set temperature. However, in practical application, there may be situations where the air conditioner is unreasonably matched with the room area, the start-up setting condition is random, the running frequency design is unreasonable, and the like, so that the air conditioner may frequently reach the temperature point and stop in the above situations, and the frequent temperature-reaching stop may not only greatly affect the service life of the compressor, but also cause poor comfort, and affect the user experience.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for controlling a frequency of a compressor, and an inverter air conditioner, so as to alleviate the above problems, and achieve automatic control of an energy-saving comfort function of the inverter air conditioner by correcting a target frequency of the compressor, thereby improving a comfort experience of a user.
In a first aspect, an embodiment of the present invention provides a frequency control method for a compressor, where the method includes: when the compressor is stopped at the temperature for the first time, acquiring a temperature-reaching stop parameter; wherein, reaching warm shutdown parameters includes: maximum operating frequency F of the compressormaxAnd FmaxCorresponding first outer ring temperature TWa, compressor operating frequency F at shutdowntstopAnd FtstopCorresponding second outer ring temperature Twi and corresponding third outer ring temperature T when the compressor is startedPressure openerAnd the compressor is driven from FmaxTime interval t from the beginning of operation to warm shutdownWarm stop(ii) a Judging whether the compressor meets preset correction control conditions or not based on the temperature-reaching shutdown parameters; and if so, correcting the target frequency of the compressor, and controlling the compressor to operate according to the corrected target frequency.
Further, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the preset modification control condition includes a preset parameter; wherein, the preset parameters include: a preset temperature point capability requirement correction outer loop judgment constant CT, a preset temperature point capability requirement correction frequency judgment constant Cf and a preset temperature point capability requirement correction time judgment constantCt; the step of determining whether the compressor satisfies the preset correction control condition based on the temperature-reaching shutdown parameter includes: (1) judging whether a remote control instruction received by the variable-frequency air conditioner is unchanged or not, and judging whether the variable-frequency air conditioner is in a temperature-reaching shutdown state or not; (2) judgment of FmaxAnd FtstopWhether the difference of (a) is not greater than Cf; (3) judging tWarm stopWhether or not is not greater than Ct; (4) judging whether the absolute value of the difference value of TWa and TWi is not greater than CT; and if the above (1) to (4) are all yes, judging that the compressor meets the preset correction control condition.
Further, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the step of correcting the target frequency of the compressor includes: analysis of TPressure openerAnd Twi is greater than or equal to CT; correcting the target frequency of the compressor according to the analysis result; wherein the analysis result comprises a first analysis result and a second analysis result, and the first analysis result is TPressure openerAnd Twi is greater than or equal to CT in absolute value, and the second analysis result is TPressure openerAnd Twi is less than CT in absolute value.
Further, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein when the analysis result is the first analysis result, the step of correcting the target frequency of the compressor according to the analysis result includes: determining the target frequency FTarget frequencyWhether a first preset condition is met or not; wherein the first preset condition is Ftstop＜FTarget frequency＜Fmax(ii) a If so, the target frequency of the compressor is corrected to (F)Target frequency +Ftstop) 2; if not, the target frequency of the compressor is maintained at FTarget frequency。
Further, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein when the analysis result is a second analysis result, the step of correcting the target frequency of the compressor according to the analysis result includes: determining the target frequency FTarget frequencyWhether a second preset condition is met or not; wherein the second preset condition is as follows: ftstop＜FTarget frequency＜Fmax(ii) a If so, the target frequency of the compressor is corrected to (F)Target frequency +Ftstop)/2。
Further, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the method further includes: if FTarget frequency≥FmaxThen the target frequency of the compressor is corrected to (F)max+Ftstop) 2; or, if FTarget frequency≤FtstopThen the target frequency of the compressor is maintained as FTarget frequency。
Further, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein the step of correcting the target frequency of the compressor further includes: and when the inverter air conditioner is monitored to be in a non-reaching temperature shutdown state, and/or when the inverter air conditioner receives a new remote control instruction, finishing correcting the target frequency of the compressor.
In a second aspect, an embodiment of the present invention further provides a frequency control apparatus for a compressor, where the apparatus includes: the acquisition module is used for acquiring a temperature-reaching shutdown parameter when the compressor is subjected to temperature-reaching shutdown for the first time; wherein, reaching warm shutdown parameters includes: maximum operating frequency F of the compressormaxAnd said FmaxCorresponding first outer ring temperature TWa, compressor operating frequency F at shutdowntstopAnd said FtstopCorresponding second outer ring temperature Twi and corresponding third outer ring temperature T when the compressor is startedPressure openerAnd the compressor is driven from said FmaxTime interval t from the beginning of operation to warm shutdownWarm stop(ii) a The judging module is used for judging whether the compressor meets the preset correction control condition or not based on the temperature-reaching shutdown parameter; and the correction module is used for correcting the target frequency of the compressor and controlling the compressor to operate according to the corrected target frequency if the target frequency is the correct frequency.
In a third aspect, an embodiment of the present invention further provides an inverter air conditioner, which includes a computer-readable storage medium storing a computer program and a processor, where the computer program is read by the processor and executed to implement the steps of the method according to the first aspect.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the method in the first aspect.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a frequency control method and device of a compressor and a variable frequency air conditioner, wherein whether the target frequency is corrected or not in the next temperature-reaching restart of the variable frequency air conditioner after the variable frequency air conditioner is stopped at the first temperature-reaching state is intelligently judged through the temperature-reaching stop parameter and the preset correction control condition, and the target frequency is corrected through the temperature-reaching stop parameter so as to adjust the operation period of the temperature-reaching stop, so that the compressor is prevented from being stopped at the first temperature-reaching state frequently, the automatic control of the energy-saving and comfortable functions of the variable frequency air conditioner is realized, the energy and electricity saving are realized, the service life of the compressor is ensured, the comfortable experience of a user is improved, and the variable frequency air conditioner has better practical value.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an inverter air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a frequency control method for a compressor according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a frequency control method of a compressor according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a frequency control device of a compressor according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Aiming at the problem that the existing variable frequency air conditioner is frequently stopped at a high temperature to cause poor user comfort experience, the embodiment of the invention provides a frequency control method and device of a compressor and the variable frequency air conditioner.
To facilitate understanding of the present embodiment, a method for controlling a frequency of a compressor according to an embodiment of the present invention will be described in detail. The execution main body is a control device in an inverter air conditioner, and as shown in a structural schematic diagram of the inverter air conditioner shown in fig. 1, the inverter air conditioner 1 includes a control device 10, a collecting device 20 and a compressor 30; wherein, the collecting device 20 and the compressor 30 are both connected with the control device 10. In practical applications, the above-mentioned collecting device 20 includes, but is not limited to, temperature sensors, such as a first temperature sensor for collecting a discharge temperature of the compressor and a second temperature sensor for collecting an outdoor ambient temperature, and the like, and may be specifically configured according to practical situations, and the embodiment of the present invention is not limited to this. In addition, the inverter air conditioner 1 further includes a switch, an outdoor heat exchanger, an external fan, a radiator, and the like, which may be specifically set according to actual conditions, and the embodiments of the present invention are not described in detail herein.
Based on the inverter air conditioner, an embodiment of the present invention provides a frequency control method for a compressor, as shown in fig. 2, the method includes the following steps:
step S202, when the compressor is stopped at the temperature for the first time, obtaining a parameter of stopping at the temperature;
specifically, the above-mentioned shutdown parameters include: maximum operating frequency F of the compressormaxAnd FmaxCorresponding first outer ring temperature TWa, compressor operating frequency F at shutdowntstopAnd FtstopCorresponding second outer ring temperature Twi and corresponding third outer ring temperature T when the compressor is startedPressure openerAnd the compressor is driven from FmaxTime interval t from the beginning of operation to warm shutdownWarm stop(ii) a Wherein, FmaxIn the non-starting operation stage, under the latest remote control instruction, the compressor reaches the maximum operation frequency before warm shutdown, namely when the temperature of the variable frequency air conditioner is the same as the preset temperature corresponding to the latest remote control instruction, the compressor is shut down. In addition, the above-mentioned shutdown parameters may also include other types of parameters, which may be specifically set according to actual conditions.
It should be noted that, each of the above outer ring temperatures can be acquired by a temperature sensor, and in practical application, the outer ring temperature of the inverter air conditioner is the external environment temperature, and since the external environment temperature can most reflect the body surface temperature, and the indoor temperature cannot reflect the current body surface temperature, the requirements of various room loads can be better satisfied by the outer ring temperature, matching between the air conditioner and the room area and the like is ensured, and the target frequency is corrected by the plurality of outer ring temperatures, so that the comfort experience of the user can be further improved.
Step S204, judging whether the compressor meets a preset correction control condition or not based on the temperature-reaching shutdown parameter;
wherein the preset correction control condition comprises a preset parameter; here, the preset parameters include: presetting a temperature point capability requirement correction outer loop judgment constant CT, a temperature point capability requirement correction frequency judgment constant Cf and a temperature point capability requirement correction time judgment constant Ct; it should be noted that, CT, Cf, and CT may be set according to actual situations, and this is not limited to be described in the embodiment of the present invention.
Specifically, the step of judging whether the compressor meets the preset correction control condition or not based on the temperature-reaching shutdown parameter comprises the following steps: (1) judging whether a remote control instruction received by the variable-frequency air conditioner is unchanged or not, and judging whether the variable-frequency air conditioner is in a temperature-reaching shutdown state or not; (2) judgment of FmaxAnd FtstopWhether the difference is not greater than the Cf; (3) judging tWarm stopWhether or not is not greater than Ct; (4) judging whether the absolute value of the difference value of TWa and TWi is not greater than CT; and if the above (1) to (4) are all yes, judging that the compressor meets the preset correction control condition. In the step (1), the remote control instruction received by the inverter air conditioner is the latest remote control instruction, namely the remote control instruction corresponding to the preset temperature when the compressor reaches the temperature and stops the machine for the first time, after the control device receives the remote control instruction, the compressor is controlled to operate according to the remote control instruction until the machine stops at the first time, in the process, the remote control instruction is unchanged, and the inverter air conditioner enters the state of stopping at the temperature.
In practical application, when the above (1) to (4) are all yes, that is, (1) the remote control instruction received by the variable frequency air conditioner is unchanged, and the variable frequency air conditioner is in a state of reaching a temperature shutdown; (2) fmax－Ftstop≤Cf；(3)tWarm stopCt is less than or equal to Ct; (4) the absolute TWa-Twi is less than or equal to CT; judging that the compressor meets the preset correction control condition, and correcting the target frequency of the compressor; on the contrary, if one of the above (1) - (4) is negative, it is determined that the compressor does not meet the preset correction control condition, and at this time, the target frequency of the compressor cannot be corrected, for example, the operation can be continuously restarted according to the current target frequency until the compressor meets the preset correction control condition.
And step S206, if so, correcting the target frequency of the compressor, and controlling the compressor to operate according to the corrected target frequency.
Specifically, when the compressor meets a preset correction control condition, correcting the target frequency of the compressor, and controlling the compressor to operate according to the corrected target frequency; the target frequency may also be referred to as a current target frequency, that is, after the compressor is first warmed and shut down, the compressor is restarted to be operated to the target frequency corresponding to the warmed and shut down again, it should be noted that, for different processes from the compressor being warmed and shut down to the next warmed and shut down, the target frequency corresponding to each process may be different or the same, and may be specifically set according to an actual situation, which is not limited in this embodiment of the present invention.
For the target frequency after the first warm-up shutdown, if the target frequency is not corrected, the compressor operates according to the preset operation period and the target frequency, and the warm-up shutdown is performed again after the preset operation period (such as 30min) is finished, so that the inverter air conditioner still has the condition of frequent warm-up shutdown, the service life of the compressor is damaged, the indoor temperature is fluctuated, and the comfort level of a user is reduced. Therefore, the target frequency is corrected, the running period of the variable frequency air conditioner is prolonged, the variable frequency air conditioner is prevented from being shut down frequently when reaching the temperature, and the comfort level of a user is improved.
Preferably, in the process of correcting the target frequency of the compressor, the method further includes: and when the inverter air conditioner is monitored to be in a non-reaching temperature shutdown state, and/or when the inverter air conditioner receives a new remote control instruction, finishing correcting the target frequency of the compressor. Specifically, in the process of correcting the target frequency of the compressor, the method further comprises exiting the correction condition: (I) whether the variable frequency air conditioner is in a non-reaching temperature shutdown state or not; (II) whether the remote control command changes; when any one of the (I) and the (II) is satisfied, such as when the inverter air conditioner is monitored to be in a non-reaching temperature shutdown state, or when the inverter air conditioner receives a new remote control instruction, or when the (I) and the (II) are simultaneously satisfied, the control device quits correcting the target frequency of the compressor at the moment, and controls the compressor to start according to the preset target frequency, or controls the compressor to restart according to the latest remote control instruction, such as when the inverter air conditioner is in a first reaching temperature shutdown state, the corresponding remote control instruction is the set temperature of 25 ℃, in the process of correcting the target frequency of the compressor, the control device receives the new remote control instruction, such as the new remote control instruction with the set temperature of 27 ℃, the control device finishes correcting the target frequency of the compressor at the moment, and controls the compressor to start according to the new remote control instruction, so that the indoor temperature meets 27 ℃, therefore, the comfort level of the user is improved, various requirements of the user are met, and the experience degree of the user is improved.
According to the frequency control method of the compressor provided by the embodiment of the invention, whether the target frequency is corrected in the next temperature-reaching restart of the variable frequency air conditioner after the first temperature-reaching shutdown is intelligently judged through the temperature-reaching shutdown parameter and the preset correction control condition, and the target frequency is corrected through the temperature-reaching shutdown parameter so as to adjust the operation period of the temperature-reaching shutdown, so that the compressor is prevented from frequently reaching the temperature shutdown, the automatic control of the energy-saving and comfortable functions of the variable frequency air conditioner is realized, the comfortable experience of a user is improved, and the method has a good practical value.
On the basis of fig. 2, another frequency control method for a compressor is provided in the embodiment of the present invention, which focuses on the process of correcting the target frequency of the compressor; as shown in fig. 3, the method comprises the steps of:
step S302, controlling the compressor to start and operate;
step S304, when the compressor is stopped at the temperature for the first time, obtaining a parameter of stopping at the temperature;
step S306, judging whether the compressor meets a preset correction control condition or not based on the temperature-reaching shutdown parameter; if yes, go to step S308; if not, returning to the step S302;
step S308, judging TPressure openerAnd Twi is greater than or equal to CT; namely analysis of TPressure openerAnd whether the absolute value of the difference value of Twi is larger than or equal to CT or not and obtaining an analysis result; wherein the analysis result comprises a first analysis result and a second analysis result, and the first analysis result is TPressure openerAnd Twi is greater than or equal to CT in absolute value, i.e. when TPressure openerWhen Twi | ≧ CT, execute step S310, the second analysis result is TPressure openerAnd Twi is less than CT in absolute value, i.e. when TPressure opener-Twi | < CT, performing the stepS316；
Step S310, judge FTarget frequencyWhether or not F is satisfiedtstop＜FTarget frequency＜Fmax(ii) a Specifically, when the analysis result is the first analysis result, the target frequency F is judgedTarget frequencyWhether a first preset condition is met or not; where the first predetermined condition is Ftstop＜FTarget frequency＜Fmax(ii) a If yes, go to step S312; if not, go to step S314;
step S312, the target frequency of the compressor is corrected to (F)Target frequency +Ftstop)/2；
Step S314, keeping the target frequency of the compressor at FTarget frequency；
Step S316, judging FTarget frequencyWhether or not F is satisfiedtstop＜FTarget frequency＜Fmax(ii) a Specifically, when the analysis result is the second analysis result, the target frequency F is judgedTarget frequencyWhether a second preset condition is met or not; where the second predetermined condition is Ftstop＜FTarget frequency＜Fmax(ii) a That is, the second preset condition is the same as the first preset condition, if yes, step S318 is executed; if not, executing step S320 or step S322;
step S318, the target frequency of the compressor is corrected to (F)Target frequency +Ftstop)/2；
Step S320, if FTarget frequency≥FmaxThen the target frequency of the compressor is corrected to (F)max+Ftstop)/2；
Step S322, if FTarget frequency≤FtstopThen the target frequency of the compressor is maintained as FTarget frequency；
In step S324, the compressor is controlled to operate at the corrected target frequency.
In practical application, for a current target frequency, when the compressor operates according to the corrected target frequency, if a preset operation period is reached, the control device may further perform adjustment again according to the current frequency (at this time, the corrected target frequency) to obtain a new corrected target frequency, operate according to the new corrected target frequency, and so on until the inverter air conditioner reaches an operation duration, or receives a new remote control instruction, and the control device controls the compressor to stop or operate according to the new remote control instruction, which may be specifically set according to an actual situation.
Therefore, by correcting the target frequency, the temperature of the variable frequency air conditioner in the preset operation period is lower than the preset temperature due to the fact that the corrected target frequency is lower than the target frequency when the compressor starts to operate according to the corrected target frequency, so that the compressor is prevented from stopping at the temperature, the operation period is prolonged, frequent stopping at the temperature is avoided, and the comfort experience of a user is improved; and not only the effective energy and electricity saving is realized, but also the service life of the compressor is ensured, and the compressor has better practical value.
On the basis of the above method embodiment, the embodiment of the present invention further provides a frequency control apparatus for a compressor, as shown in fig. 4, the apparatus includes an obtaining module 41, a determining module 42, and a correcting module 43, which are connected in sequence; the functions of each module are as follows:
an obtaining module 41, configured to obtain a warm stop parameter when the compressor first reaches a warm stop; wherein, reaching warm shutdown parameters includes: maximum operating frequency F of the compressormaxAnd FmaxCorresponding first outer ring temperature TWa, compressor operating frequency F at shutdowntstopAnd FtstopCorresponding second outer ring temperature Twi and corresponding third outer ring temperature T when the compressor is startedPressure openerAnd the compressor is driven from FmaxTime interval t from the beginning of operation to warm shutdownWarm stop；
A judging module 42, configured to judge whether the compressor meets a preset correction control condition based on the temperature-reached shutdown parameter;
and a correcting module 43, configured to correct the target frequency of the compressor if yes, and control the compressor to operate according to the corrected target frequency.
According to the frequency control device of the compressor, whether the target frequency is corrected in the next temperature-reaching restart after the frequency conversion air conditioner is shut down when reaching the temperature for the first time is judged intelligently through the temperature-reaching shutdown parameter and the preset correction control condition, and the target frequency is corrected through the temperature-reaching shutdown parameter so as to adjust the operation period of the temperature-reaching shutdown, so that the frequency-reaching shutdown of the compressor is avoided frequently, the automatic control of the energy-saving and comfortable functions of the frequency conversion air conditioner is realized, the comfortable experience of a user is improved, and the frequency control device has a good practical value.
In one possible embodiment, the preset correction control condition includes a preset parameter; wherein, the preset parameters include: presetting a temperature point capability requirement correction outer loop judgment constant CT, a temperature point capability requirement correction frequency judgment constant Cf and a temperature point capability requirement correction time judgment constant Ct; the determining module 42 is further configured to: (1) judging whether a remote control instruction received by the variable-frequency air conditioner is unchanged or not, and judging whether the variable-frequency air conditioner is in a temperature-reaching shutdown state or not; (2) judgment of FmaxAnd FtstopWhether the difference of (a) is not greater than Cf; (3) judging tWarm stopWhether or not is not greater than Ct; (4) judging whether the absolute value of the difference value of TWa and TWi is not greater than CT; and if the above (1) to (4) are all yes, judging that the compressor meets the preset correction control condition.
In another possible embodiment, the modification module 43 is configured to: analysis of TPressure openerAnd Twi is greater than or equal to CT; correcting the target frequency of the compressor according to the analysis result; wherein the analysis result comprises a first analysis result and a second analysis result, and the first analysis result is TPressure openerAnd Twi is greater than or equal to CT in absolute value, and the second analysis result is TPressure openerAnd Twi is less than CT in absolute value.
In another possible embodiment, when the analysis result is the first analysis result, the correcting the target frequency of the compressor according to the analysis result includes: determining the target frequency FTarget frequencyWhether a first preset condition is met or not; wherein the first preset condition is Ftstop＜FTarget frequency＜Fmax(ii) a If yes, correcting the target frequency of the compressorIs (F)Target frequency +Ftstop) 2; if not, the target frequency of the compressor is maintained at FTarget frequency。
In another possible embodiment, when the analysis result is the second analysis result, the correcting the target frequency of the compressor according to the analysis result includes: determining the target frequency FTarget frequencyWhether a second preset condition is met or not; wherein the second preset condition is as follows: ftstop＜FTarget frequency＜Fmax(ii) a If so, the target frequency of the compressor is corrected to (F)Target frequency +Ftstop)/2。
In another possible embodiment, the apparatus further comprises: if FTarget frequency≥FmaxThen the target frequency of the compressor is corrected to (F)max+Ftstop) 2; or, if FTarget frequency≤FtstopThen the target frequency of the compressor is maintained as FTarget frequency。
In another possible embodiment, the modification module 43 is further configured to: and when the inverter air conditioner is monitored to be in a non-reaching temperature shutdown state, and/or when the inverter air conditioner receives a new remote control instruction, finishing correcting the target frequency of the compressor.
The frequency control device of the compressor provided by the embodiment of the invention has the same technical characteristics as the frequency control method of the compressor provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
Corresponding to the frequency control method of the compressor provided by the above embodiment, an embodiment of the present invention further provides an inverter air conditioner, which includes a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and runs to implement the frequency control method of the compressor provided by the above embodiment.
The present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the frequency control method for a compressor provided in the foregoing embodiments, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the apparatus and the inverter air conditioner described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. 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 and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A method of frequency control of a compressor, the method comprising:
when the compressor is stopped at the temperature for the first time, acquiring a temperature-reaching stop parameter; wherein the warm stop parameter comprises: maximum operating frequency F of the compressormaxAnd said FmaxCorresponding first outer ring temperature TWa, compressor operating frequency at shutdownFtstopAnd said FtstopCorresponding second outer ring temperature Twi and corresponding third outer ring temperature T when the compressor is startedPressure openerAnd the compressor is driven from said FmaxTime interval t from the beginning of operation to warm shutdownWarm stop；
Judging whether the compressor meets a preset correction control condition or not based on the temperature-reaching shutdown parameter;
and if so, correcting the target frequency of the compressor, and controlling the compressor to operate according to the corrected target frequency.
2. The method of claim 1, wherein the preset modified control condition comprises a preset parameter; wherein the preset parameters include: presetting a temperature point capability requirement correction outer loop judgment constant CT, a temperature point capability requirement correction frequency judgment constant Cf and a temperature point capability requirement correction time judgment constant Ct;
the step of judging whether the compressor meets a preset correction control condition or not based on the temperature-reaching shutdown parameter comprises the following steps:
(1) judging whether a remote control instruction received by the variable frequency air conditioner is unchanged, and judging whether the variable frequency air conditioner is in a temperature-reaching shutdown state;
(2) judging the FmaxAnd said FtstopWhether the difference is not greater than the Cf;
(3) judging the tWarm stopWhether or not greater than the Ct;
(4) judging whether the absolute value of the difference value of the TWa and the TWi is not larger than the CT or not;
and if the above (1) to (4) are all yes, judging that the compressor meets the preset correction control condition.
3. The method of claim 2, wherein the step of correcting the target frequency of the compressor comprises:
analyzing the TPressure openerAnd whether the absolute value of the difference in Twi is greater than or equal to the CT;
correcting the target frequency of the compressor according to the analysis result; wherein the analysis result comprises a first analysis result and a second analysis result, and the first analysis result is the TPressure openerAnd the absolute value of the difference between Twi and Twi is greater than or equal to the CT, and the second analysis result is the TPressure openerAnd the absolute value of the difference between Twi is less than CT.
4. The method as claimed in claim 3, wherein the step of correcting the target frequency of the compressor according to the analysis result when the analysis result is the first analysis result comprises:
judging the target frequency FTarget frequencyWhether a first preset condition is met or not; wherein the first preset condition is Ftstop＜FTarget frequency＜Fmax；
If so, correcting the target frequency of the compressor to be (F)Target frequency +Ftstop)/2；
If not, the target frequency of the compressor is maintained as FTarget frequency。
5. The method as claimed in claim 3, wherein the step of correcting the target frequency of the compressor according to the analysis result when the analysis result is the second analysis result comprises:
judging the target frequency FTarget frequencyWhether a second preset condition is met or not; wherein the second preset condition is: ftstop＜FTarget frequency＜Fmax；
If so, correcting the target frequency of the compressor to be (F)Target frequency +Ftstop)/2。
6. The method of claim 5, further comprising:
if FTarget frequency≥FmaxThen the target frequency of the compressor is setThe rate is corrected to (F)max+Ftstop) 2; alternatively, the first and second electrodes may be,
if FTarget frequency≤FtstopMaintaining the target frequency of the compressor at FTarget frequency。
7. The method of claim 2, wherein the step of correcting the target frequency of the compressor further comprises:
and when the inverter air conditioner is monitored to be in a non-reaching temperature shutdown state, and/or when the inverter air conditioner receives a new remote control instruction, finishing correcting the target frequency of the compressor.
8. A frequency control apparatus of a compressor, characterized in that the apparatus comprises:
the acquisition module is used for acquiring a temperature-reaching shutdown parameter when the compressor is subjected to temperature-reaching shutdown for the first time; wherein the warm stop parameter comprises: maximum operating frequency F of the compressormaxAnd said FmaxCorresponding first outer ring temperature TWa, compressor operating frequency F at shutdowntstopAnd said FtstopCorresponding second outer ring temperature Twi and corresponding third outer ring temperature T when the compressor is startedPressure openerAnd the compressor is driven from said FmaxTime interval t from the beginning of operation to warm shutdownWarm stop；
The judging module is used for judging whether the compressor meets a preset correction control condition or not based on the temperature-reaching shutdown parameter;
and the correction module is used for correcting the target frequency of the compressor and controlling the compressor to operate according to the corrected target frequency if the target frequency of the compressor is correct.
9. An inverter air conditioner, comprising a processor and a computer readable storage medium storing a computer program which, when read and executed by the processor, performs the steps of the method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, performs the steps of the method of any of the preceding claims 1-7.
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