CN105004008A - Low-temperature start control method and system for frequency conversion air conditioner and air conditioner - Google Patents
Low-temperature start control method and system for frequency conversion air conditioner and air conditioner Download PDFInfo
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- CN105004008A CN105004008A CN201510427687.1A CN201510427687A CN105004008A CN 105004008 A CN105004008 A CN 105004008A CN 201510427687 A CN201510427687 A CN 201510427687A CN 105004008 A CN105004008 A CN 105004008A
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/59—Remote control for presetting
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Abstract
The invention relates to a low-temperature start control method and system for a frequency conversion air conditioner and the air conditioner. The method includes the following steps that the frequency of a main frequency conversion compressor is controlled to be increased to the preset frequency Fa1; whether the frequency conversion air conditioner needs to be preheated or not is judged, and if not, a conventional start procedure continues to be started; if the frequency conversion air conditioner needs to be preheated, the frequency of the main frequency conversion compressor is controlled to be increased to the preheating frequency Fa3, and the main frequency conversion compressor is kept at the preheating frequency Fa3 to stably run; meanwhile, other compressors are sequentially started, the frequencies of the other compressors are all controlled to be increased to the preheating frequency Fa3, and the other compressors are kept at the preheating frequency Fa3 to stably run; whether the preheating process is completed or not is judged, if yes, the main frequency conversion compressor and the other compressors are controlled to continue running or be directly stopped. The invention provides a preheating start method suitable for low-temperature heating. It is guaranteed that the frequency conversion air conditioner can still be normally, stably and quickly preheated and start heating at the low-temperature environment; the heating speed is increased; the compressors are protected; the service life of the frequency conversion air conditioner is prolonged, and the use comfort of users is improved.
Description
Technical field
The present invention relates to airconditioning control field, particularly a kind of convertible frequency air-conditioner low-temperature starting control method, control system and air-conditioner thereof.
Background technology
In recent years; there is more and more colder trend in China's weather; lowest temperature record constantly refreshes in whole nation each province; consecutive low temperature makes energy industry again and again meet with crisis; for heat supply in winter problem proposes acid test; meanwhile, also have stimulated the demand of market to low-temperature heating air conditioner, the inexorable trend that low-temperature heating will be air-conditioning market development.As everyone knows, ultra-low temperature surroundings not only affects the heating effect of air-conditioning, and easily consumes the too much energy, and some air-conditioning even cannot normally start when temperature is low especially.General heat pump type air conditioning system cold-starting process, heats with routine and starts essentially no difference, namely open compressor according to ability need in compressor start.Cryogenic refrigeration or there are when heating startup the technological difficulties such as the preheating of system refrigerant is slow usually, because the viscosity of refrigerant under low temperature with oil increases, flowing is sluggish, usual startup needs the longer time just can make the refrigerant circulation of whole system, thus it is slower to make indoor set realize refrigerating/heating effect, especially, for the outer machine system containing multiple compressor, when indoor unit capability demand only requires the single compressor of a unlatching outer machine, start especially slow.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of convertible frequency air-conditioner low-temperature starting control method, control system and air-conditioner thereof, solves in prior art air-conditioning system cold-starting process, starts technical problem slowly.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of convertible frequency air-conditioner low-temperature starting control method, comprises the following steps:
Step 1, gathers and first judges parameter for what judge whether to carry out preheating and second judge parameter for what judge whether to terminate preheating;
Step 2, the main transformer frequency compressor frequency controlling convertible frequency air-conditioner rises to the first frequency Fa1 preset;
Step 3, judges parameter according to described first, judges that convertible frequency air-conditioner is the need of preheating, and if do not needed preheating, then convertible frequency air-conditioner continues regular boot up sequence; As needs preheating, then enter step 4;
Step 4, controls described main transformer frequency compressor frequency and rises to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation; Simultaneously open other compressors successively, and control other compressor frequencies and all rise to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation;
According to described second, step 5, judges that parameter judges whether to terminate warm, if terminate warm, then according to indoor unit capability demand, control main frequency-changeable compressor and other compressors continuation operation or directly close.
The invention has the beneficial effects as follows: the invention provides a kind of preheating starting method being applicable to low-temperature heating; ensure that convertible frequency air-conditioner at low ambient temperatures; still can normally, stable, preheating fast and startup heat; not only improve and heat speed; and have protective effect to compressor, improve service life and user's comfort of convertible frequency air-conditioner.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described first judges that parameter comprises air conditioning operating mode, main transformer frequently environment temperature and/or the main transformer compressor shutdown time frequently before compressor chamber temperature, pipeline start up by preheating; Described second judges that parameter comprises the discharge superheat of preheating time and/or main frequency-changeable compressor.
Further, in step 3, judge that described convertible frequency air-conditioner specifically comprises the following steps the need of preheating:
Step 301, sets the first reference temperature t1, the first reference time T1, second frequency Fa2 and the second reference temperature t2;
Step 302, judges that air conditioning operating mode is heating mode or refrigeration mode, if refrigeration mode, then convertible frequency air-conditioner continues regular boot up sequence; If heating mode, then control cross valve commutation, and control described main transformer frequently compressor frequency drop to described second frequency Fa2, then enter step 303;
Step 303, before judging frequency-changeable compressor cavity temperature and described pipeline start up by preheating, whether the difference of environment temperature is greater than described first reference temperature t1, if be not more than described first reference temperature t1, then enters step 304; As the first reference temperature t1 as described in being greater than, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence;
Step 304, judges the downtime of described frequency-changeable compressor, whether is less than described first reference time T1, if be not less than described first reference time T1, then enters step 305; If be less than described first reference time T1, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence;
Step 305, before judging described pipeline start up by preheating, whether environment temperature is greater than described second reference temperature t2, if be not more than described second reference temperature t2, then enters the warm of described step 4; If be greater than described second reference temperature t2, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence.
Further, described first reference time T1 is 30min; When environment temperature before described pipeline start up by preheating is lower than 0 DEG C, described first reference temperature t1 is set to 20 DEG C, and when before described pipeline start up by preheating, environment temperature is not less than 0 DEG C, described first reference temperature t1 is set to 30 DEG C; Described second reference temperature t2 be [-7 DEG C, 0 DEG C) or [-15 DEG C ,-8 DEG C) arbitrary value in two intervals.
Further, in step 5, judge whether that terminating warm specifically comprises the following steps:
Step 501, sets the second reference time T2 and the 3rd reference temperature t3;
Step 502, judges whether be less than the second reference time T2 preheating time, if be less than described second reference time T2, enters step 503; If be not less than described second reference time T2, then terminate warm;
Step 503, judges whether the discharge superheat of described frequency-changeable compressor is less than the 3rd reference temperature t3, if be less than described 3rd reference temperature t3, then proceeds preheating; If be not less than described 3rd reference temperature t3, then terminate warm;
Step 504, repeats above-mentioned steps 502 ~ 503, until warm terminates.
Further, when environment temperature before described pipeline start up by preheating is lower than 0 DEG C, described second reference time T2 is set to 10min, and when before described pipeline start up by preheating, environment temperature is not less than 0 DEG C, described second reference time T2 is set to 7min; When environment temperature before described pipeline start up by preheating is lower than 0 DEG C, described 3rd reference temperature t3 is set to 10 DEG C, and when before described pipeline start up by preheating, environment temperature is not less than 0 DEG C, described 3rd reference temperature t3 is set to 15 DEG C.
A kind of convertible frequency air-conditioner cold-starting control system, comprises acquisition module, control module, pipeline start up by preheating judge module, warm-up block and preheating and terminates judge module;
Described acquisition module collection first judges parameter for what judge whether to carry out preheating and second judges parameter for what judge whether to terminate preheating;
Described control module is used for before carrying out preheating judgement, and the main transformer frequency compressor frequency controlling convertible frequency air-conditioner rises to the first frequency Fa1 preset; And after described warm terminates, according to indoor unit capability demand, control main frequency-changeable compressor and other compressors continuation operation or directly close;
Described pipeline start up by preheating judge module is used for judging parameter according to described first, judges that convertible frequency air-conditioner is the need of preheating;
Described warm-up block rises to pre-heat frequency Fa3 for controlling described main transformer frequency compressor frequency, and keeps pre-heat frequency Fa3 stable operation; Simultaneously open other compressors successively, and control other compressor frequencies and all rise to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation;
Described preheating terminates judge module for judging that parameter judges whether to terminate warm according to described second.
Further, described pipeline start up by preheating judge module comprises the first setup unit, the first judging unit, the first control unit, the second judging unit, the 3rd judging unit and the 4th judging unit,
Described first setup unit is for setting the first reference temperature t1, the first reference time T1, second frequency Fa2 and the second reference temperature t2;
Described first judging unit is for judging that air conditioning operating mode is heating mode or refrigeration mode;
Described first control unit be used for when air conditioning operating mode is heating mode, control cross valve commutation, and control described main transformer frequency compressor frequency drop to described second frequency Fa2;
Whether described second judging unit is greater than described first reference temperature t1 for the difference of environment temperature before judging frequency-changeable compressor cavity temperature and described pipeline start up by preheating;
Whether described 3rd judging unit is less than described first reference time T1 the downtime of described frequency-changeable compressor for judging;
Whether described 4th judging unit is greater than described second reference temperature t2 for environment temperature before judging described pipeline start up by preheating;
Described preheating terminates judge module and comprises the second setup unit, the 5th judging unit and the 6th judging unit,
Described second setup unit is for setting the second reference time T2 and the 3rd reference temperature t3;
Whether described 5th judging unit is less than the second reference time T2 preheating time for judging;
Described 6th judging unit is for judging whether the discharge superheat of described frequency-changeable compressor is less than the 3rd reference temperature t3.
A kind of air-conditioner, comprises described convertible frequency air-conditioner cold-starting control system.
Further, described air-conditioner comprises a frequency-changeable compressor and a constant speed compressor in parallel; Or the constant speed compressor of a frequency-changeable compressor and multiple parallel connection; Or the frequency-changeable compressor of multiple parallel connection, and one of them is main frequency-changeable compressor.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of convertible frequency air-conditioner low-temperature starting control method of the present invention;
Fig. 2 is the schematic flow sheet of a kind of convertible frequency air-conditioner low-temperature starting control method of the present invention step 3;
Fig. 3 is the schematic flow sheet of a kind of convertible frequency air-conditioner low-temperature starting control method of the present invention step 5;
Fig. 4 is the structural representation of a kind of convertible frequency air-conditioner cold-starting of the present invention control system;
Fig. 5 is the structural representation of air-conditioner of the present invention;
Fig. 6 is the structural representation of the air-conditioner of the embodiment of the present invention.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Fig. 1 is the schematic flow sheet of a kind of convertible frequency air-conditioner low-temperature starting control method of the present invention, as shown in Figure 1, comprises the following steps:
Step 1, gathers and first judges parameter for what judge whether to carry out preheating and second judge parameter for what judge whether to terminate preheating; In the present embodiment, described first judges that parameter comprises air conditioning operating mode, main transformer frequently environment temperature and/or the main transformer compressor shutdown time frequently before compressor chamber temperature, pipeline start up by preheating; Described second judges that parameter comprises the discharge superheat of preheating time and/or main frequency-changeable compressor.
Step 2, the main transformer controlling convertible frequency air-conditioner frequently compressor frequency rises to the first frequency Fa1 preset, and the raising frequency time that the frequency of described main frequency-changeable compressor rises to first frequency Fa1 is determined voluntarily by described main frequency-changeable compressor the duration of runs.Preferably, the scope of described first frequency Fa1 is 30 ~ 60HZ.
Step 3, judges parameter according to described first, judges that convertible frequency air-conditioner is the need of preheating, and if do not needed preheating, then convertible frequency air-conditioner continues regular boot up sequence; As needs preheating, then enter step 4.As shown in Figure 2, for the present embodiment judges whether the schematic flow sheet carrying out preheating, specifically comprise the following steps:
Step 301, sets the first reference temperature t1, the first reference time T1, second frequency Fa2 and the second reference temperature t2;
Step 302, judges that air conditioning operating mode is heating mode or refrigeration mode, if refrigeration mode, then convertible frequency air-conditioner continues regular boot up sequence; If heating mode, then control cross valve commutation, and control described main transformer frequently compressor frequency drop to described second frequency Fa2, then enter step 303; Preferably, the scope of described second frequency Fa2 is 20 ~ 40HZ;
Step 303, before judging frequency-changeable compressor cavity temperature and described pipeline start up by preheating, whether the difference of environment temperature is greater than described first reference temperature t1, if be not more than described first reference temperature t1, then enters step 304; As the first reference temperature t1 as described in being greater than, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence; Preferably, first reference temperature t1 can be set to different values according to different environment temperatures interval, such as when environment temperature before described pipeline start up by preheating is lower than 0 DEG C, described first reference temperature t1 is set to 20 DEG C, when before described pipeline start up by preheating, environment temperature is not less than 0 DEG C, described first reference temperature t1 is set to 30 DEG C;
Step 304, judges the downtime of described frequency-changeable compressor, whether is less than described first reference time T1, if be not less than described first reference time T1, then enters step 305; If be less than described first reference time T1, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence; Preferably, described first reference time T1 is set to 30min;
Step 305, before judging described pipeline start up by preheating, whether environment temperature is greater than described second reference temperature t2, if be not more than described second reference temperature t2, then enters the warm of described step 4; If be greater than described second reference temperature t2, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence.Preferably, described second reference temperature t2 be [-7 DEG C, 0 DEG C) and [-15 DEG C ,-8 DEG C) arbitrary value in two intervals, wherein " (", ") " represents and does not comprise, and " [", "] " represents and comprise.
Step 4, controls described main transformer frequency compressor frequency and rises to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation; Simultaneously open other compressors successively, and control other compressor frequencies and all rise to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation; Preferably, the scope of described pre-heat frequency Fa3 is 50 ~ 80HZ.
According to described second, step 5, judges that parameter judges whether to terminate warm, if terminate warm, then according to indoor unit capability demand, control compressor and continue move to target frequency or directly close.As shown in Figure 3, for the present embodiment judges whether the schematic flow sheet terminating preheating, specifically comprise the following steps:
Step 501, sets the second reference time T2 and the 3rd reference temperature t3;
Step 502, judges whether be less than the second reference time T2 preheating time, if be less than described second reference time T2, enters step 503; If be not less than described second reference time T2, then terminate warm; The object that T2 is arranged is that guarantee system is not subject to the pre-heat affecting long time, ensures that it enters normal operating mode as early as possible.Preferably, T2 can be set as different values according to different environment temperatures, and if environment temperature less than 0 DEG C is 10min, environment temperature more than 0 DEG C (comprising 0 DEG C) is 7min;
Step 503, judges whether the discharge superheat of described frequency-changeable compressor is less than the 3rd reference temperature t3, if be less than described 3rd reference temperature t3, then proceeds preheating; If be not less than described 3rd reference temperature t3, then terminate warm; Preferably, t3 can according to different environment temperatures interval be set as different values, as environment temperature before pipeline start up by preheating lower than 0 DEG C time, described 3rd reference temperature t3 is set to 10 DEG C, when before described pipeline start up by preheating, environment temperature is not less than 0 DEG C, described 3rd reference temperature t3 is set to 15 DEG C;
Step 504, repeats above-mentioned steps 502 ~ 503, until warm terminates.
Fig. 4 is the structural representation of a kind of convertible frequency air-conditioner cold-starting of the present invention control system, as shown in Figure 4, comprises acquisition module, control module, pipeline start up by preheating judge module, warm-up block and preheating and terminates judge module;
Described acquisition module collection first judges parameter for what judge whether to carry out preheating and second judges parameter for what judge whether to terminate preheating;
Described control module is used for before carrying out preheating judgement, and the main transformer frequency compressor frequency controlling convertible frequency air-conditioner rises to the first frequency Fa1 preset; And after described warm terminates, according to indoor unit capability demand, control main frequency-changeable compressor and other compressors continuation operation or directly close;
Described pipeline start up by preheating judge module is used for judging parameter according to described first, judges that convertible frequency air-conditioner is the need of preheating;
Described warm-up block rises to pre-heat frequency Fa3 for controlling described main transformer frequency compressor frequency, and keeps pre-heat frequency Fa3 stable operation; Simultaneously open other compressors successively, and control other compressor frequencies and all rise to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation;
Described preheating terminates judge module for judging that parameter judges whether to terminate warm according to described second.
In the present embodiment, described pipeline start up by preheating judge module comprises the first setup unit, the first judging unit, the first control unit, the second judging unit, the 3rd judging unit and the 4th judging unit,
Described first setup unit is for setting the first reference temperature t1, the first reference time T1 and the second reference temperature t2;
Described first judging unit is for judging that air conditioning operating mode is heating mode or refrigeration mode;
Described first control unit be used for when air conditioning operating mode is heating mode, control cross valve commutation, and control described main transformer frequency compressor frequency drop to described second frequency Fa2;
Whether described second judging unit is greater than described first reference temperature t1 for the difference of environment temperature before judging frequency-changeable compressor cavity temperature and described pipeline start up by preheating;
Whether described 3rd judging unit is less than described first reference time T1 the downtime of described frequency-changeable compressor for judging;
Whether described 4th judging unit is greater than described second reference temperature t2 for environment temperature before judging described pipeline start up by preheating.
In the present embodiment, described preheating terminates judge module and comprises the second setup unit, the 5th judging unit and the 6th judging unit,
Described second setup unit is for setting the second reference time T2 and the 3rd reference temperature t3;
Whether described 5th judging unit is less than the second reference time T2 preheating time for judging;
Described 6th judging unit, for judging whether the discharge superheat of described frequency-changeable compressor is less than the 3rd reference temperature t3, if be less than described 3rd reference temperature t3, then proceeds preheating; If be not less than described 3rd reference temperature t3, then terminate warm.
Fig. 5 is the structural representation of air-conditioner of the present invention, as shown in Figure 5, comprises above-mentioned convertible frequency air-conditioner cold-starting control system.Fig. 6 is the structural representation of a kind of air-conditioner of the embodiment of the present invention, described convertible frequency air-conditioner cold-starting control system is eliminated in Fig. 6, as shown in Figure 6, described air-conditioner comprises a frequency-changeable compressor and a constant speed compressor in parallel, described frequency-changeable compressor and constant speed compressor comprise exhaust outlet and gas returning port respectively, and described frequency-changeable compressor is high pressure chest compressor; Cross valve comprises exhaust port, condensation port, evaporimeter port and air intake duct port, and described exhaust port connects the exhaust outlet of described constant speed compressor and the exhaust outlet of described variable speed compressor respectively; Outdoor heat exchanger arrival end connects described cross valve condensation port, and the port of export, by outdoor expansion valve connecting fluid side stop valve arrival end, described outdoor air cooling heat exchanger is provided with outdoor fan; The described liquid side stop valve port of export connects gas side stop valve arrival end by indoor set heat exchanger (not shown in FIG.), and the described gas side stop valve port of export connects the evaporimeter port of described cross valve; The air intake duct port of described cross valve connects the arrival end of low pressure tank, and the port of export of low pressure tank connects the gas returning port of described frequency-changeable compressor and constant speed compressor respectively.In other embodiments, described air-conditioner can also comprise the constant speed compressor of a frequency-changeable compressor and multiple parallel connection or the frequency-changeable compressor of multiple parallel connection, and one of them is main frequency-changeable compressor, when there is multiple constant speed compressor or frequency-changeable compressor, in step 4, open all constant speed compressors successively and carry out preheating.
The invention provides a kind of preheating starting method being applicable to low-temperature heating; ensure that convertible frequency air-conditioner at low ambient temperatures; still can normally, stable, preheating fast and startup heat; not only improve and heat speed; and have protective effect to compressor, improve service life and user's comfort of convertible frequency air-conditioner.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a convertible frequency air-conditioner low-temperature starting control method, comprises the following steps:
Step 1, gathers and first judges parameter for what judge whether to carry out preheating and second judge parameter for what judge whether to terminate preheating;
Step 2, the main transformer frequency compressor frequency controlling convertible frequency air-conditioner rises to the first frequency Fa1 preset;
Step 3, judges parameter according to described first, judges that convertible frequency air-conditioner is the need of preheating, and if do not needed preheating, then convertible frequency air-conditioner continues regular boot up sequence; As needs preheating, then enter step 4;
Step 4, controls described main transformer frequency compressor frequency and rises to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation; Simultaneously open other compressors successively, and control other compressor frequencies and all rise to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation;
According to described second, step 5, judges that parameter judges whether to terminate warm, if terminate warm, then according to indoor unit capability demand, control main frequency-changeable compressor and other compressors continuation operation or directly close.
2. control method according to claim 1, is characterized in that: described first judges that parameter comprises air conditioning operating mode, main transformer frequently environment temperature and/or the main transformer compressor shutdown time frequently before compressor chamber temperature, pipeline start up by preheating; Described second judges that parameter comprises the discharge superheat of preheating time and/or main frequency-changeable compressor.
3. control method according to claim 2, is characterized in that: in step 3, judges that described convertible frequency air-conditioner specifically comprises the following steps the need of preheating:
Step 301, sets the first reference temperature t1, the first reference time T1, second frequency Fa2 and the second reference temperature t2;
Step 302, judges that air conditioning operating mode is heating mode or refrigeration mode, if refrigeration mode, then convertible frequency air-conditioner continues regular boot up sequence; If heating mode, then control cross valve commutation, and control described main transformer frequently compressor frequency drop to described second frequency Fa2, then enter step 303;
Step 303, before judging frequency-changeable compressor cavity temperature and described pipeline start up by preheating, whether the difference of environment temperature is greater than described first reference temperature t1, if be not more than described first reference temperature t1, then enters step 304; As the first reference temperature t1 as described in being greater than, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence;
Step 304, judges the downtime of described frequency-changeable compressor, whether is less than described first reference time T1, if be not less than described first reference time T1, then enters step 305; If be less than described first reference time T1, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence;
Step 305, before judging described pipeline start up by preheating, whether environment temperature is greater than described second reference temperature t2, if be not more than described second reference temperature t2, then enters the warm of described step 4; If be greater than described second reference temperature t2, then do not carry out warm, described convertible frequency air-conditioner continues regular boot up sequence.
4. control method according to claim 3, is characterized in that: described first reference time T1 is 30min; When environment temperature before described pipeline start up by preheating is lower than 0 DEG C, described first reference temperature t1 is set to 20 DEG C, and when before described pipeline start up by preheating, environment temperature is not less than 0 DEG C, described first reference temperature t1 is set to 30 DEG C; Described second reference temperature t2 be [-7 DEG C, 0 DEG C) or [-15 DEG C ,-8 DEG C) arbitrary value in two intervals.
5. control method according to claim 2, is characterized in that: in step 5, judges whether that terminating warm specifically comprises the following steps:
Step 501, sets the second reference time T2 and the 3rd reference temperature t3;
Step 502, judges whether be less than the second reference time T2 preheating time, if be less than described second reference time T2, enters step 503; If be not less than described second reference time T2, then terminate warm;
Step 503, judges whether the discharge superheat of described frequency-changeable compressor is less than the 3rd reference temperature t3, if be less than described 3rd reference temperature t3, then proceeds preheating; If be not less than described 3rd reference temperature t3, then terminate warm;
Step 504, repeats above-mentioned steps 502 ~ 503, until warm terminates.
6. control method according to claim 5, it is characterized in that: when environment temperature before described pipeline start up by preheating is lower than 0 DEG C, described second reference time T2 is set to 10min, and when before described pipeline start up by preheating, environment temperature is not less than 0 DEG C, described second reference time T2 is set to 7min; When environment temperature before described pipeline start up by preheating is lower than 0 DEG C, described 3rd reference temperature t3 is set to 10 DEG C, and when before described pipeline start up by preheating, environment temperature is not less than 0 DEG C, described 3rd reference temperature t3 is set to 15 DEG C.
7. a convertible frequency air-conditioner cold-starting control system, is characterized in that: comprise acquisition module, control module, pipeline start up by preheating judge module, warm-up block and preheating and terminate judge module;
Described acquisition module collection first judges parameter for what judge whether to carry out preheating and second judges parameter for what judge whether to terminate preheating;
Described control module is used for before carrying out preheating judgement, and the main transformer frequency compressor frequency controlling convertible frequency air-conditioner rises to the first frequency Fa1 preset; And after described warm terminates, according to indoor unit capability demand, control main frequency-changeable compressor and other compressors continuation operation or directly close;
Described pipeline start up by preheating judge module is used for judging parameter according to described first, judges that convertible frequency air-conditioner is the need of preheating;
Described warm-up block rises to pre-heat frequency Fa3 for controlling described main transformer frequency compressor frequency, and keeps pre-heat frequency Fa3 stable operation; Simultaneously open other compressors successively, and control other compressor frequencies and all rise to pre-heat frequency Fa3, and keep pre-heat frequency Fa3 stable operation;
Described preheating terminates judge module for judging that parameter judges whether to terminate warm according to described second.
8. control system according to claim 7, is characterized in that: described pipeline start up by preheating judge module comprises the first setup unit, the first judging unit, the first control unit, the second judging unit, the 3rd judging unit and the 4th judging unit,
Described first setup unit is for setting the first reference temperature t1, the first reference time T1, second frequency Fa2 and the second reference temperature t2;
Described first judging unit is for judging that air conditioning operating mode is heating mode or refrigeration mode;
Described first control unit be used for when air conditioning operating mode is heating mode, control cross valve commutation, and control described main transformer frequency compressor frequency drop to described second frequency Fa2;
Whether described second judging unit is greater than described first reference temperature t1 for the difference of environment temperature before judging frequency-changeable compressor cavity temperature and described pipeline start up by preheating;
Whether described 3rd judging unit is less than described first reference time T1 the downtime of described frequency-changeable compressor for judging;
Whether described 4th judging unit is greater than described second reference temperature t2 for environment temperature before judging described pipeline start up by preheating;
Described preheating terminates judge module and comprises the second setup unit, the 5th judging unit and the 6th judging unit,
Described second setup unit is for setting the second reference time T2 and the 3rd reference temperature t3;
Whether described 5th judging unit is less than the second reference time T2 preheating time for judging;
Described 6th judging unit is for judging whether the discharge superheat of described frequency-changeable compressor is less than the 3rd reference temperature t3.
9. an air-conditioner, is characterized in that: comprise convertible frequency air-conditioner cold-starting control system described in claim 7 or 8.
10. controller according to claim 9, is characterized in that: described air-conditioner comprises a frequency-changeable compressor and a constant speed compressor in parallel; Or the constant speed compressor of a frequency-changeable compressor and multiple parallel connection; Or the frequency-changeable compressor of multiple parallel connection, and one of them is main frequency-changeable compressor.
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|---|---|---|---|---|
| CN105526683A (en) * | 2016-02-19 | 2016-04-27 | 珠海格力电器股份有限公司 | Control method and device for air-conditioning system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010003813A (en) * | 1999-06-25 | 2001-01-15 | 구자홍 | The preheating and starting method for a inverter air conditioner |
| CN1888662A (en) * | 2005-06-28 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Central air conditioner variable frequency compressor preheating operation controlling method |
| CN101086251A (en) * | 2006-06-06 | 2007-12-12 | 乐金电子(天津)电器有限公司 | Air conditioner compressor system and its control method |
| KR20080012514A (en) * | 2006-08-03 | 2008-02-12 | 엘지전자 주식회사 | Pre-heating method for air conditioning apparatus |
| CN102269463A (en) * | 2011-07-27 | 2011-12-07 | 海尔集团公司 | Control method for increasing low-temperature heating heat of varied-frequency air conditioner |
-
2015
- 2015-07-20 CN CN201510427687.1A patent/CN105004008B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010003813A (en) * | 1999-06-25 | 2001-01-15 | 구자홍 | The preheating and starting method for a inverter air conditioner |
| CN1888662A (en) * | 2005-06-28 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Central air conditioner variable frequency compressor preheating operation controlling method |
| CN101086251A (en) * | 2006-06-06 | 2007-12-12 | 乐金电子(天津)电器有限公司 | Air conditioner compressor system and its control method |
| KR20080012514A (en) * | 2006-08-03 | 2008-02-12 | 엘지전자 주식회사 | Pre-heating method for air conditioning apparatus |
| CN102269463A (en) * | 2011-07-27 | 2011-12-07 | 海尔集团公司 | Control method for increasing low-temperature heating heat of varied-frequency air conditioner |
Cited By (16)
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|---|---|---|---|---|
| CN107024014A (en) * | 2016-02-02 | 2017-08-08 | 约克广州空调冷冻设备有限公司 | Refrigeration system and its startup control method with high pressure chest frequency-changeable compressor |
| CN105526683A (en) * | 2016-02-19 | 2016-04-27 | 珠海格力电器股份有限公司 | Control method and device for air-conditioning system |
| CN105526683B (en) * | 2016-02-19 | 2018-09-07 | 珠海格力电器股份有限公司 | A kind of control method and device of air-conditioning system |
| CN105953359A (en) * | 2016-04-29 | 2016-09-21 | 广东美的制冷设备有限公司 | Electric heating structure and air conditioner compressor starting system and method |
| CN106091164A (en) * | 2016-06-27 | 2016-11-09 | 广东美的制冷设备有限公司 | A kind of compressor preheating structure, pre-heating system, pre-heating mean and air-conditioning |
| CN106482412A (en) * | 2016-09-23 | 2017-03-08 | 广东美的暖通设备有限公司 | Source pump and its low-temperature start method of compressor and device |
| CN106907315A (en) * | 2017-03-02 | 2017-06-30 | 珠海格力电器股份有限公司 | The control method of compressor, apparatus and system |
| CN108954714A (en) * | 2018-07-25 | 2018-12-07 | 广东美的暖通设备有限公司 | The starting control method and air conditioner of air conditioner |
| CN110567111A (en) * | 2019-09-16 | 2019-12-13 | 珠海格力电器股份有限公司 | air conditioner control method and device, storage medium and air conditioner |
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| CN113531802A (en) * | 2021-06-22 | 2021-10-22 | 青岛海尔空调器有限总公司 | Method for preheating air conditioner, air conditioner and air conditioning system |
| CN113531819A (en) * | 2021-06-22 | 2021-10-22 | 青岛海尔空调器有限总公司 | Method and device for preheating air conditioner, air conditioner and air conditioning system |
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| CN113969889B (en) * | 2021-11-18 | 2024-05-14 | 四川长虹空调有限公司 | Preheating control method and system for variable frequency compressor |
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