CN106091271A - Air-conditioner abnormal sound removing method and device - Google Patents
Air-conditioner abnormal sound removing method and device Download PDFInfo
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- CN106091271A CN106091271A CN201610454410.2A CN201610454410A CN106091271A CN 106091271 A CN106091271 A CN 106091271A CN 201610454410 A CN201610454410 A CN 201610454410A CN 106091271 A CN106091271 A CN 106091271A
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- compressor
- expansion valve
- air
- electric expansion
- aperture
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Classifications
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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
- F24F11/62—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Abstract
The invention discloses a kind of air-conditioner abnormal sound removing method, including step: when detecting that starting of air conditioner instructs, control compressor start, and control electric expansion valve with initial opening operation；When the operation time after compressor start is less than the first Preset Time, the operation aperture controlling electric expansion valve keeps initial opening constant.The invention also discloses a kind of air-conditioner abnormal sound cancellation element.The present invention is in the compressor start stage, and the operation aperture controlling electric expansion valve keeps initial opening constant, can be effectively reduced the coolant flowing abnormal sound produced during coolant pressure balance because electric expansion valve constantly regulates.
Description
Technical field
The present invention relates to air-conditioner technical field, particularly relate to a kind of air-conditioner abnormal sound removing method and device.
Background technology
Domestic air conditioner noise is the key factor affecting its comfort index, is also the weight evaluating domestic air conditioner quality
Want one of index.Along with improving constantly of expanding economy and living standard, people are to noise from air conditioner index request increasingly
Height, air conditioner industry is increasingly competitive, and air-conditioning products is in addition to the performance that must have had and safety index, and low noise then carries
One of important indicator of the high product market competitiveness.
Convertible frequency air-conditioner is to have selected frequency conversion dedicated compressor on the basis of common air-conditioning, adds frequency-changing control system,
It can automatically provide required cold or heat according to room availability；After indoor temperature reaches expected value, air-conditioner host is then
Can accurately keep the constant speed of this temperature to operate, it is achieved " not shutting down operating ", thus ensure stablizing of ambient temperature.
One of visual plant of convertible frequency air-conditioner control cold medium flux is electric expansion valve, and it utilizes electric pulse to regulate control
Air conditioner coolant flow quantity, there is the features such as fast, the flow adjustment range width of response, can by default various Rule adjusting actions,
Realize being automatically adjusted of refrigerant flow, run under optimal operating mode so that air-conditioner remains at, there is energy-saving effect
Good and temperature controls the features such as accurate.
Use refrigerating capacity and the Energy Efficiency Ratio of the transducer air conditioning of electric expansion valve, than the transducer air conditioning using capillary tube
Refrigerating capacity and Energy Efficiency Ratio high by more than 20%.
But, with the convertible frequency air-conditioner of electric expansion valve while the living environment for people's Creating Comfort, also give people
Bring problem of noise pollution, in the compressor start stage, compressor from resting state suddenly be actuated for operating, compressor
Frequency is run at dynamic raising frequency, and the coolant high-low pressure circulated in refrigeration systems is uneven, in the pressure balanced mistake of coolant
Cheng Zhong, electric expansion valve is constantly adjusted, it is easy to coolant flowing abnormal sound occurs, reduces the quality of air-conditioner, seriously
Affect user's satisfaction to air-conditioner.
Foregoing is only used for auxiliary and understands technical scheme, does not represent and recognizes that foregoing is existing skill
Art.
Summary of the invention
Present invention is primarily targeted at a kind of air-conditioner abnormal sound removing method of offer and device, it is intended to solve at compressor
Startup stage, compressor is actuated for suddenly operating from resting state, and in refrigeration system, the coolant high-low pressure of circulation is equilibrated
Cheng Zhong, electric expansion valve is constantly adjusted, problem coolant flowing abnormal sound easily occur.
For achieving the above object, a kind of air-conditioner abnormal sound removing method that the present invention provides, comprise the following steps:
When detecting that starting of air conditioner instructs, control compressor start, and control electric expansion valve with initial opening operation；
When the operation time after compressor start is less than the first Preset Time, the operation aperture controlling electric expansion valve is protected
Hold initial opening constant.
Preferably, described when the operation time after compressor start is less than the first Preset Time, control electric expansion valve
Operation aperture keep the constant step of initial opening after, also include:
When the operation time after compressor start is more than described first Preset Time, obtain the second Preset Time and compression
Machine delivery temperature；
When the delivery temperature of compressor raises, the operation increasing electric expansion valve according to compressor exhaust temperature in real time is opened
Degree；
When the delivery temperature of compressor reduces, reduce once electricity according to compressor exhaust temperature every the second Preset Time
The operation aperture of sub-expansion valve.
Preferably, described method also includes:
Obtain the running frequency changing value of compressor, target operating frequency changing value and electric expansion valve object run aperture
Excursion；
When the running frequency changing value of compressor is more than described target operating frequency changing value, control electric expansion valve
Run aperture range of accommodation less than described object run aperture excursion.
Preferably, described method also includes:
When the running frequency changing value of compressor is less than or equal to described target operating frequency changing value, in conjunction with compressor
Running frequency adjust the second Preset Time；
The second Preset Time after adjusting, according to the operation aperture of compressor exhaust temperature regulation electric expansion valve.
Preferably, described method also includes:
When compressor exhaust temperature obtains abnormal, according to the operation aperture of target exhaust temperature regulation electric expansion valve.
Additionally, for achieving the above object, the present invention also provides for a kind of air-conditioner abnormal sound cancellation element, including:
Control module, for when detecting that starting of air conditioner instruct, control compressor start, and control electric expansion valve with
Initial opening runs；
Keep module, for when the operation time after compressor start is less than the first Preset Time, controlling electronic expansion
The operation aperture of valve keeps initial opening constant.
Preferably, described air-conditioner abnormal sound cancellation element also includes: acquisition module；
Described acquisition module, when the operation time after compressor start is more than described first Preset Time, obtains
Second Preset Time and compressor exhaust temperature；
Described control module, is additionally operable to, when the delivery temperature of compressor raises, increase in real time according to compressor exhaust temperature
The operation aperture of big electric expansion valve；When the delivery temperature of compressor reduces, pre-every second according to compressor exhaust temperature
If the time reduces the operation aperture of primary electron expansion valve.
Preferably, described acquisition module, it is additionally operable to obtain the running frequency changing value of compressor, target operating frequency change
Value and electric expansion valve object run aperture excursion；
Described control module, is additionally operable to when the running frequency changing value of compressor is more than described target operating frequency changing value
Time, control the operation aperture range of accommodation of electric expansion valve less than described object run aperture excursion.
Preferably, described air-conditioner abnormal sound cancellation element also includes: adjusting module；
Described adjusting module, becomes less than or equal to described target operating frequency for the running frequency changing value when compressor
During change value, the running frequency in conjunction with compressor adjusts the second Preset Time；
Described control module, is additionally operable to the second Preset Time after adjusting, according to compressor exhaust temperature regulation electricity
The operation aperture of sub-expansion valve.
Preferably, described control module, it is additionally operable to when compressor exhaust temperature obtains abnormal, according to target exhaust temperature
The operation aperture of regulation electric expansion valve.
The present invention, when detecting that starting of air conditioner instructs, controls compressor start, and controls electric expansion valve initially to open
Degree runs；When the operation time after compressor start is less than the first Preset Time, the operation aperture controlling electric expansion valve is protected
Hold initial opening constant.In the compressor start stage, the operation aperture controlling electric expansion valve keeps initial opening constant, permissible
It is effectively reduced the coolant flowing abnormal sound produced during coolant pressure balance because electric expansion valve constantly regulates.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the first embodiment of air-conditioner abnormal sound removing method of the present invention；
Fig. 2 is the starting current coordinate graph of a relation with rated current in compressor start stage；
Fig. 3 is the schematic flow sheet of the second embodiment of air-conditioner abnormal sound removing method of the present invention；
Fig. 4 is the schematic flow sheet of the 3rd embodiment of air-conditioner abnormal sound removing method of the present invention；
Fig. 5 is the schematic flow sheet of the 4th embodiment of air-conditioner abnormal sound removing method of the present invention；
Fig. 6 is the schematic flow sheet of the 5th embodiment of air-conditioner abnormal sound removing method of the present invention；
Fig. 7 is the high-level schematic functional block diagram of the first embodiment of air-conditioner abnormal sound cancellation element of the present invention；
Fig. 8 is the high-level schematic functional block diagram of the second embodiment of air-conditioner abnormal sound cancellation element of the present invention；
Fig. 9 is the high-level schematic functional block diagram of the 3rd embodiment of air-conditioner abnormal sound cancellation element of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The primary solutions of the embodiment of the present invention is: when detecting that starting of air conditioner instructs, and controls compressor start, and
Control electric expansion valve to run with initial opening；When the operation time after compressor start is less than the first Preset Time, control
The operation aperture of electric expansion valve keeps initial opening constant.In the compressor start stage, the operation controlling electric expansion valve is opened
Degree keep initial opening constant, can be effectively reduced during coolant pressure balance constantly regulate because of electric expansion valve and
The coolant flowing abnormal sound produced.
Owing to existing air-conditioner is in the compressor start stage, compressor is actuated for suddenly operating, system from resting state
In cooling system in the coolant high-low pressure equilibrium process of circulation, electric expansion valve is constantly adjusted, and easily occurs that coolant flows
Abnormal sound.
Based on the problems referred to above, the present invention provides a kind of air-conditioner abnormal sound removing method.
Schematic flow sheet with reference to the first embodiment that Fig. 1, Fig. 1 are air-conditioner abnormal sound removing method of the present invention.
In one embodiment, described air-conditioner abnormal sound removing method includes:
Step S10, when detecting that starting of air conditioner instructs, controls compressor start, and controls electric expansion valve with initially
Aperture is run；
When detecting that starting of air conditioner instructs, i.e. during compressor starts startup optimization, control electric expansion valve initially to open
Degree runs；The value of described initial opening is relevant with the factor such as outdoor temperature, operating modes of air conditioner, with refrigeration, dehumidifier pattern
As a example by, such as, when outdoor temperature is more than 35 DEG C, initial opening is 200 steps；When outdoor temperature more than 20 DEG C less than 35 DEG C
Time, initial opening is 160 steps；Certainly, initial opening and the factor such as outdoor temperature and operating modes of air conditioner can also have other
Corresponding relation, this is not done restriction further by the present invention.
Step S20, when the operation time after compressor start is less than the first Preset Time, controls the fortune of electric expansion valve
Row aperture keeps initial opening constant.
Compressor has several Starting mode, common are directly initiate, star triangle start, soft start and variable frequency starting, on
State several Starting mode startup stage the starting current of compressor from the relation of rated current as in figure 2 it is shown, different startups
Time used startup stage of mode also differs, thus can determine described first pre-according to the type of compressor and startup time
If the time, in the first Preset Time after compressor start, the operation aperture controlling electric expansion valve keeps initial opening not
Become；As a example by variable frequency starting mode, such as, in refrigeration, under dehumidifier pattern, set the first Preset Time as 1～3 minute, in system
Under heat pattern, setting the first Preset Time as 2～4 minutes, certainly, described first Preset Time can be that empirically value is in advance
The value set, it is also possible to be to determine that compressor enters the time value of normal operation mode according to factors such as compressor exhaust temperatures,
Can also be other suitable time value, this not be done restriction further by the present invention；Taking of initial opening and the first Preset Time
Value cooperates, and air-conditioner to be ensured can realize the operation set by enabled instruction and such as freeze, the effect such as heats, and ensures again
Coolant flowing abnormal sound in refrigeration system is less than certain value.
The present embodiment, by the certain time after compressor starts starts, controls electric expansion valve and transports with initial opening
OK, it is suppressed that the compressor start stage, electric expansion valve is constantly adjusted the coolant flowing abnormal sound caused.
Schematic flow sheet with reference to the second embodiment that Fig. 3, Fig. 3 are air-conditioner abnormal sound removing method of the present invention.Based on upper
State the first embodiment of method, after described step S20, also include:
Step S30, when the operation time after compressor start is more than described first Preset Time, when acquisition second is preset
Between and compressor exhaust temperature；
When the compressor start operation time is more than the first Preset Time, compressor is substantially already at properly functioning rank
Section, may determine that the ruuning situation of compressor according to compressor exhaust temperature；Meanwhile, at compressor normal operating phase, Ying Gen
Regulate electronic expansion valve opening according to compressor exhaust temperature, reach the target-like set by operating instruction as early as possible controlling air-conditioner
State.
Step S40, when the delivery temperature of compressor raises, increases electric expansion valve in real time according to compressor exhaust temperature
Operation aperture；
Step S50, when the delivery temperature of compressor reduces, contracts every the second Preset Time according to compressor exhaust temperature
The operation aperture of little primary electron expansion valve.
Owing to compressor exhaust temperature is too high, it is anti-that high aerofluxus can cause compressor housing, oil, coolant, pipe group etc. to play chemistry
Should, the service life of compressor can be shortened；Therefore, the operation time after compressor start is more than the first Preset Time, and pressure
When the delivery temperature of contracting machine raises, in order to prevent compressor exhaust temperature too high, need to increase in real time according to compressor exhaust temperature
The operation aperture of electric expansion valve；And when the delivery temperature of compressor reduces, in order to reduce what electronic expansion valve regulation caused
Coolant flowing abnormal sound, it is preferable that reduce the fortune of primary electron expansion valve according to compressor exhaust temperature every the second Preset Time
Row aperture；And the electric expansion valve amplitude of accommodation is excessive causes the coolant high-low pressure of circulation in refrigeration system uneven in order to prevent
Weighing apparatus, and then the situation of coolant flowing abnormal sound occurs, when reducing the operation aperture of electric expansion valve, the step number of regulation should be controlled every time
Make within the specific limits, and the operation aperture of electric expansion valve is preferably adjusted, at electronic expansion in the range of 80～480 steps
After valve regulation once, after the second Preset Time, in refrigeration system, the coolant high-low pressure of circulation tends to balance, then to electronics
Expansion valve regulates next time, the coolant flowing abnormal sound that suppression coolant high-low pressure imbalance causes further, and described second
Preset Time can be true according to different mode of operations and/or compressor exhaust temperature and/or the electric expansion valve amplitude of accommodation etc.
Fixed, such as, under refrigeration, dehumidifier pattern, set the second Preset Time as 2～3 minutes, in a heating mode, set second pre-
If the time is 1～2 minute, certainly, described second Preset Time can be empirically to be worth the value set in advance, it is also possible to is root
The time value determined according to factors such as the electric expansion valve amplitudes of accommodation, it is also possible to for other suitable time value, the present invention is to this not
Do restriction further.
The present embodiment, by when compressor is properly functioning, when the delivery temperature of compressor reduces, is arranged according to compressor
Temperature reduces the operation aperture of primary electron expansion valve every the second Preset Time, and suppression electric expansion valve regulating frequency is too high
Cause the situation of coolant flowing abnormal sound.
Schematic flow sheet with reference to the 3rd embodiment that Fig. 4, Fig. 4 are air-conditioner abnormal sound removing method of the present invention.Based on upper
Stating the second embodiment of method, described method also includes:
Step S60, obtains the running frequency changing value of compressor, target operating frequency changing value and electric expansion valve target
Run aperture excursion；
Step S70, when the running frequency changing value of compressor is more than described target operating frequency changing value, controls electronics
The operation aperture range of accommodation of expansion valve is less than described object run aperture excursion.
The running frequency change of compressor can change the coolant high-low pressure of circulation in refrigeration system, and at compressor operating
When frequency changes, the operation aperture of regulation electric expansion valve, coolant flowing abnormal sound can become apparent from, from reducing coolant flowing
For the angle of abnormal sound, the regulation of compressor operating frequency is preferred time different from the regulation of the operation aperture of electric expansion valve, but
Allow for the air-conditioner regulation needs to indoor temperature and humidity, the present embodiment set certain target operating frequency changing value and
Electric expansion valve object run aperture excursion, the running frequency changing value at compressor changes less than target operating frequency
During value, according to the delivery temperature etc. of compressor, the operation aperture of electric expansion valve is adjusted；Such as, with convertible frequency air-conditioner it is
Example, the running frequency excursion of compressor is 30Hz to 130Hz, with target operating frequency changing value for ± 5% or ±
5Hz, then the running frequency changing value that can be arranged on 30 seconds inner compressors less than ± 5% or is less than ± 5Hz, the most satisfied
The running frequency changing value of compressor is less than target operating frequency changing value, then according to the delivery temperature of compressor etc. to electronics
The operation aperture of expansion valve is adjusted；When the running frequency changing value of compressor is more than target operating frequency changing value, can
The operation aperture of electric expansion valve is adjusted in object run aperture excursion；Aperture due to electric expansion valve
Scope is 0 to 500 step, normally uses 100 to 500 steps, and the present embodiment, from the point of view of reducing coolant flowing abnormal sound, limits
The operation aperture determining electric expansion valve is adjusted in the range of 80～480 steps, then can run aperture change model with target setting
Enclose for ± 5% or ± 20 steps, therefore, when the running frequency changing value of compressor exceed ± 5% or exceed ± 5Hz time, can
With the operation aperture excursion of electric expansion valve in being arranged on 30 seconds for ± 5% or ± 20 steps, thus reduce because of compressor
Regulate the coolant flowing abnormal sound caused with electric expansion valve simultaneously.
The present embodiment is limited by situation about regulating compressor and electric expansion valve simultaneously, can effectively reduce
Compressor and electric expansion valve regulate the coolant flowing abnormal sound caused simultaneously.
Schematic flow sheet with reference to the 4th embodiment that Fig. 5, Fig. 5 are air-conditioner abnormal sound removing method of the present invention.Based on upper
Stating the 3rd embodiment of method, described method also includes:
Step S80, when the running frequency changing value of compressor is less than or equal to described target operating frequency changing value, knot
The running frequency closing compressor adjusts the second Preset Time；
Step S90, the second Preset Time after adjusting, according to the fortune of compressor exhaust temperature regulation electric expansion valve
Row aperture.
Compressor operating frequency change can bring the change of the coolant high-low pressure of circulation in refrigeration system, thus regulation is electric
Time needed for the coolant high-low pressure of circulation balances in refrigeration system after the operation aperture of sub-expansion valve also can be varied from, for
Improve air-conditioner and to the regulation efficiency of indoor temperature and humidity and reduce coolant flowing abnormal sound, should adjust according to the running frequency of compressor
Whole second Preset Time, and the second Preset Time regulation once electricity when the delivery temperature of compressor reduces, after adjusting
The operation aperture of sub-expansion valve；Specifically, compressor extracts the steam of gasification from vaporizer, thus certain in maintaining vaporizer
Evaporating temperature and pressure, and the steam sucked is compressed, to maintain the high pressure in condenser, compressor is as system simultaneously
Circulation power in cooling system, also acts as the effect of conveying cold-producing medium；Electric expansion valve plays the effect of reducing pressure by regulating flow, condensed device
Condensed high pressure liquid refrigerant is changed into the liquid of low pressure, creates conditions in low-temp low-pressure gasified for cold-producing medium, electronics
The liquid supply rate of expansion valve regulation vaporizer, for controlling the degree of superheat of refrigerant vapour at suction port of compressor；Therefore electronic expansion
Valve should adapt with the running frequency of compressor for the control of liquid supply rate flow, i.e. electronic expansion valve opening will be with compressor frequency
Rate matches, and electronic expansion valve opening, in order to reduce coolant flowing abnormal sound, is regulated by the present embodiment Cai be spaced the second Preset Time
Once, then in the second Preset Time, electronic expansion valve opening remains basically stable when should ensure that liquid supply rate flow and regulation in real time, because of
And described second Preset Time can be the time value corresponding with compressor frequency set in advance according to experience, such as, with system
As a example by chill formula, when compressor frequency is 100Hz, the second Preset Time is 2 minutes, when compressor frequency is 90Hz, the
Two Preset Times are 110 seconds；It is, of course, also possible to obtain the second Preset Time according to modes such as fitting formula calculating in real time.
Second Preset Time is adjusted by the present embodiment according to compressor operating frequency, is ensureing that air-conditioner is to Indoor Temperature
While the regulation efficiency of humidity, coolant flowing abnormal sound can be reduced further.
Schematic flow sheet with reference to the 5th embodiment that Fig. 6, Fig. 6 are air-conditioner abnormal sound removing method of the present invention.Based on upper
Stating the 4th embodiment of method, described method also includes:
Step S100, when compressor exhaust temperature obtains abnormal, according to target exhaust temperature regulation electric expansion valve
Run aperture.
As it was previously stated, the too high meeting of compressor exhaust temperature causes the chemically reactives such as compressor housing, oil, coolant, pipe group,
The service life of compressor can be shortened；When compressor exhaust temperature obtains abnormal, in order to prevent the situation damaging air-conditioner from sending out
Raw, should be according to the operation aperture of target exhaust temperature regulation electric expansion valve, described target exhaust temperature can be compressor
High exhaust temperature, is adjusted the operation aperture of electric expansion valve according to this temperature, it is ensured that air-conditioner will not be impaired,
Such as, target exhaust temperature is set as the peak 130 DEG C etc. of compressor exhaust temperature；At the same time it can also be send information,
Air-conditioner is overhauled, to fix a breakdown by prompting user；Or after compressor exhaust temperature obtains abnormal certain time, by force
Stop machine, it is to avoid air-conditioner is caused further infringement.
The present embodiment is by when compressor exhaust temperature obtains abnormal, regulating electric expansion valve according to target exhaust temperature
Operation aperture, it is to avoid air-conditioner is caused damage.
In order to above-mentioned air-conditioner abnormal sound cancellation scheme is better described, below specific explanations will be carried out by 2 examples.
Example one:
Outdoor temperature is 36 DEG C, and unlatching air-conditioner is 26 DEG C with target temperature and starts refrigeration, and compressor start runs, electronics
Expansion valve is opened to the initial opening of 200 steps, and in compressor start runs 2 minutes, electric expansion valve keeps 200 step apertures not
Become；When compressor start runs and reaches 2 minutes, compressor exhaust temperature persistently raises, and getting the second Preset Time is 2 points
Clock, increases the operation aperture of electric expansion valve in real time according to compressor exhaust temperature；When detecting that compressor exhaust temperature declines
Time, at intervals of two minutes the aperture of electric expansion valve is carried out Primary regulation, make the aperture of electric expansion valve decline step by step, and ensure
Indoor temperature is close to target temperature 26 DEG C.
Example two:
Outdoor temperature is 36 DEG C, and unlatching air-conditioner is 26 DEG C with target temperature and starts refrigeration, and compressor start runs, electronics
Expansion valve is opened to the initial opening of 200 steps, and in compressor start runs 2 minutes, electric expansion valve keeps 200 step apertures not
Become；When compressor start runs and reaches 2 minutes, compressor exhaust temperature persistently raises, and getting the second Preset Time is 2 points
Clock, increases the operation aperture of electric expansion valve in real time according to compressor exhaust temperature；When detecting that compressor exhaust temperature declines
Time, obtain the running frequency of compressor, according to the situation of change of the running frequency of compressor, the second Preset Time be adjusted,
Second Preset Time is adjusted to 130 seconds, carries out Primary regulation every 130 seconds apertures to electric expansion valve, make electronic expansion
The aperture of valve declines step by step, and ensures that indoor temperature is close to target temperature 26 DEG C；After running a period of time, detect that compressor is arranged
Temperature drops to 0 DEG C, it is clear that now detected compressor exhaust temperature is wrong, according to delivery temperature be 130 DEG C
The operation aperture of electric expansion valve is adjusted by high-temperature in real time, when the compressor exhaust temperature persistent anomaly detected reaches 2
Minute time, air-conditioner sends prompt messages, and positive closing air-conditioner.
The present invention further provides a kind of air-conditioner abnormal sound cancellation element.
High-level schematic functional block diagram with reference to the first embodiment that Fig. 7, Fig. 7 are air-conditioner abnormal sound cancellation element of the present invention.
In one embodiment, described air-conditioner abnormal sound cancellation element includes: control module 10 and holding module 20.
Described control module 10, for when detecting that starting of air conditioner instructs, controls compressor start, and it is swollen to control electronics
Swollen valve runs with initial opening；
When detecting that starting of air conditioner instructs, i.e. during compressor starts startup optimization, control electric expansion valve initially to open
Degree runs；The value of described initial opening is relevant with the factor such as outdoor temperature, operating modes of air conditioner, with refrigeration, dehumidifier pattern
As a example by, such as, when outdoor temperature is more than 35 DEG C, initial opening is 200 steps；When outdoor temperature more than 20 DEG C less than 35 DEG C
Time, initial opening is 160 steps；Certainly, initial opening and the factor such as outdoor temperature and operating modes of air conditioner can also have other
Corresponding relation, this is not done restriction further by the present invention.
Described holding module 20, for when the operation time after compressor start is less than the first Preset Time, controlling electricity
The operation aperture of sub-expansion valve keeps initial opening constant.
Compressor has several Starting mode, common are directly initiate, star triangle start, soft start and variable frequency starting, on
State several Starting mode startup stage the starting current of compressor from the relation of rated current as in figure 2 it is shown, different startups
Time used startup stage of mode also differs, thus can determine described first pre-according to the type of compressor and startup time
If the time, in the first Preset Time after compressor start, the operation aperture controlling electric expansion valve keeps initial opening not
Become；As a example by variable frequency starting mode, such as, in refrigeration, under dehumidifier pattern, set the first Preset Time as 1～3 minute, in system
Under heat pattern, setting the first Preset Time as 2～4 minutes, certainly, described first Preset Time can be that empirically value is in advance
The value set, it is also possible to be to determine that compressor enters the time value of normal operation mode according to factors such as compressor exhaust temperatures,
Can also be other suitable time value, this not be done restriction further by the present invention；Taking of initial opening and the first Preset Time
Value cooperates, and air-conditioner to be ensured can realize the operation set by enabled instruction and such as freeze, the effect such as heats, and ensures again
Coolant flowing abnormal sound in refrigeration system is less than certain value.
The present embodiment, by the certain time after compressor starts starts, controls electric expansion valve and transports with initial opening
OK, it is suppressed that the compressor start stage, electric expansion valve is constantly adjusted the coolant flowing abnormal sound caused.
High-level schematic functional block diagram with reference to the second embodiment that Fig. 8, Fig. 8 are air-conditioner abnormal sound cancellation element of the present invention.Institute
State air-conditioner abnormal sound cancellation element and also include acquisition module 30.
Described acquisition module 30, when the operation time after compressor start is more than described first Preset Time, obtains
Take the second Preset Time and compressor exhaust temperature；
When the compressor start operation time is more than the first Preset Time, compressor is substantially already at properly functioning rank
Section, may determine that the ruuning situation of compressor according to compressor exhaust temperature；Meanwhile, at compressor normal operating phase, Ying Gen
Regulate electronic expansion valve opening according to compressor exhaust temperature, reach the target-like set by operating instruction as early as possible controlling air-conditioner
State.
Described control module 10, is additionally operable to when the delivery temperature of compressor raises, real-time according to compressor exhaust temperature
Increase the operation aperture of electric expansion valve；When the delivery temperature of compressor reduces, according to compressor exhaust temperature every second
Preset Time reduces the operation aperture of primary electron expansion valve.
Owing to compressor exhaust temperature is too high, it is anti-that high aerofluxus can cause compressor housing, oil, coolant, pipe group etc. to play chemistry
Should, the service life of compressor can be shortened；Therefore, the operation time after compressor start is more than the first Preset Time, and pressure
When the delivery temperature of contracting machine raises, in order to prevent compressor exhaust temperature too high, need to increase in real time according to compressor exhaust temperature
The operation aperture of electric expansion valve；And when the delivery temperature of compressor reduces, in order to reduce what electronic expansion valve regulation caused
Coolant flowing abnormal sound, it is preferable that reduce the fortune of primary electron expansion valve according to compressor exhaust temperature every the second Preset Time
Row aperture；And the electric expansion valve amplitude of accommodation is excessive causes the coolant high-low pressure of circulation in refrigeration system uneven in order to prevent
Weighing apparatus, and then the situation of coolant flowing abnormal sound occurs, when reducing the operation aperture of electric expansion valve, the step number of regulation should be controlled every time
Make within the specific limits, and the operation aperture of electric expansion valve is preferably adjusted, at electronic expansion in the range of 80～480 steps
After valve regulation once, after the second Preset Time, in refrigeration system, the coolant high-low pressure of circulation tends to balance, then to electronics
Expansion valve regulates next time, the coolant flowing abnormal sound that suppression coolant high-low pressure imbalance causes further, and described second
Preset Time can be true according to different mode of operations and/or compressor exhaust temperature and/or the electric expansion valve amplitude of accommodation etc.
Fixed, such as, under refrigeration, dehumidifier pattern, set the second Preset Time as 2～3 minutes, in a heating mode, set second pre-
If the time is 1～2 minute, certainly, described second Preset Time can be empirically to be worth the value set in advance, it is also possible to is root
The time value determined according to factors such as the electric expansion valve amplitudes of accommodation, it is also possible to for other suitable time value, the present invention is to this not
Do restriction further.
The present embodiment, by when compressor is properly functioning, when the delivery temperature of compressor reduces, is arranged according to compressor
Temperature reduces the operation aperture of primary electron expansion valve every the second Preset Time, and suppression electric expansion valve regulating frequency is too high
Cause the situation of coolant flowing abnormal sound.
Further, described acquisition module 30, it is additionally operable to obtain the running frequency changing value of compressor, target operating frequency
Changing value and electric expansion valve object run aperture excursion；
Described control module 10, is additionally operable to when the running frequency changing value of compressor changes more than described target operating frequency
During value, control the operation aperture range of accommodation of electric expansion valve less than described object run aperture excursion.
The running frequency change of compressor can change the coolant high-low pressure of circulation in refrigeration system, and at compressor operating
When frequency changes, the operation aperture of regulation electric expansion valve, coolant flowing abnormal sound can become apparent from, from reducing coolant flowing
For the angle of abnormal sound, the regulation of compressor operating frequency is preferred time different from the regulation of the operation aperture of electric expansion valve, but
Allow for the air-conditioner regulation needs to indoor temperature and humidity, the present embodiment set certain target operating frequency changing value and
Electric expansion valve object run aperture excursion, the running frequency changing value at compressor changes less than target operating frequency
During value, according to the delivery temperature etc. of compressor, the operation aperture of electric expansion valve is adjusted；Such as, with convertible frequency air-conditioner it is
Example, the running frequency excursion of compressor is 30Hz to 130Hz, with target operating frequency changing value for ± 5% or ±
5Hz, then the running frequency changing value that can be arranged on 30 seconds inner compressors less than ± 5% or is less than ± 5Hz, the most satisfied
The running frequency changing value of compressor is less than target operating frequency changing value, then according to the delivery temperature of compressor etc. to electronics
The operation aperture of expansion valve is adjusted；When the running frequency changing value of compressor is more than target operating frequency changing value, can
The operation aperture of electric expansion valve is adjusted in object run aperture excursion；Aperture due to electric expansion valve
Scope is 0 to 500 step, normally uses 100 to 500 steps, and the present embodiment, from the point of view of reducing coolant flowing abnormal sound, limits
The operation aperture determining electric expansion valve is adjusted in the range of 80～480 steps, then can run aperture change model with target setting
Enclose for ± 5% or ± 20 steps, therefore, when the running frequency changing value of compressor exceed ± 5% or exceed ± 5Hz time, can
With the operation aperture excursion of electric expansion valve in being arranged on 30 seconds for ± 5% or ± 20 steps, thus reduce because of compressor
Regulate the coolant flowing abnormal sound caused with electric expansion valve simultaneously.
The present embodiment is limited by situation about regulating compressor and electric expansion valve simultaneously, can effectively reduce
Compressor and electric expansion valve regulate the coolant flowing abnormal sound caused simultaneously.
High-level schematic functional block diagram with reference to the 3rd embodiment that Fig. 9, Fig. 9 are air-conditioner abnormal sound cancellation element of the present invention.Institute
State air-conditioner abnormal sound cancellation element and also include adjusting module 40.
Described adjusting module 40, for the running frequency changing value when compressor less than or equal to described target operating frequency
During changing value, the running frequency in conjunction with compressor adjusts the second Preset Time；
Described control module 10, is additionally operable to the second Preset Time after adjusting, and regulates according to compressor exhaust temperature
The operation aperture of electric expansion valve.
Compressor operating frequency change can bring the change of the coolant high-low pressure of circulation in refrigeration system, thus regulation is electric
Time needed for the coolant high-low pressure of circulation balances in refrigeration system after the operation aperture of sub-expansion valve also can be varied from, for
Improve air-conditioner and to the regulation efficiency of indoor temperature and humidity and reduce coolant flowing abnormal sound, should adjust according to the running frequency of compressor
Whole second Preset Time, and the second Preset Time regulation once electricity when the delivery temperature of compressor reduces, after adjusting
The operation aperture of sub-expansion valve；Specifically, compressor extracts the steam of gasification from vaporizer, thus certain in maintaining vaporizer
Evaporating temperature and pressure, and the steam sucked is compressed, to maintain the high pressure in condenser, compressor is as system simultaneously
Circulation power in cooling system, also acts as the effect of conveying cold-producing medium；Electric expansion valve plays the effect of reducing pressure by regulating flow, condensed device
Condensed high pressure liquid refrigerant is changed into the liquid of low pressure, creates conditions in low-temp low-pressure gasified for cold-producing medium, electronics
The liquid supply rate of expansion valve regulation vaporizer, for controlling the degree of superheat of refrigerant vapour at suction port of compressor；Therefore electronic expansion
Valve should adapt with the running frequency of compressor for the control of liquid supply rate flow, i.e. electronic expansion valve opening will be with compressor frequency
Rate matches, and electronic expansion valve opening, in order to reduce coolant flowing abnormal sound, is regulated by the present embodiment Cai be spaced the second Preset Time
Once, then in the second Preset Time, electronic expansion valve opening remains basically stable when should ensure that liquid supply rate flow and regulation in real time, because of
And described second Preset Time can be the time value corresponding with compressor frequency set in advance according to experience, such as, with system
As a example by chill formula, when compressor frequency is 100Hz, the second Preset Time is 2 minutes, when compressor frequency is 90Hz, the
Two Preset Times are 110 seconds；It is, of course, also possible to obtain the second Preset Time according to modes such as fitting formula calculating in real time.
Second Preset Time is adjusted by the present embodiment according to compressor operating frequency, is ensureing that air-conditioner is to Indoor Temperature
While the regulation efficiency of humidity, coolant flowing abnormal sound can be reduced further.
Further, described control module 10, it is additionally operable to when compressor exhaust temperature obtains abnormal, according to target exhaust
The operation aperture of temperature regulation electric expansion valve.
As it was previously stated, the too high meeting of compressor exhaust temperature causes the chemically reactives such as compressor housing, oil, coolant, pipe group,
The service life of compressor can be shortened；When compressor exhaust temperature obtains abnormal, in order to prevent the situation damaging air-conditioner from sending out
Raw, should be according to the operation aperture of target exhaust temperature regulation electric expansion valve, described target exhaust temperature can be compressor
High exhaust temperature, is adjusted the operation aperture of electric expansion valve according to this temperature, it is ensured that air-conditioner will not be impaired,
Such as, target exhaust temperature is set as the peak 130 DEG C etc. of compressor exhaust temperature；At the same time it can also be send information,
Air-conditioner is overhauled, to fix a breakdown by prompting user；Or after compressor exhaust temperature obtains abnormal certain time, by force
Stop machine, it is to avoid air-conditioner is caused further infringement.
The present embodiment is by when compressor exhaust temperature obtains abnormal, regulating electric expansion valve according to target exhaust temperature
Operation aperture, it is to avoid air-conditioner is caused damage.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. an air-conditioner abnormal sound removing method, it is characterised in that comprise the following steps:
When detecting that starting of air conditioner instructs, control compressor start, and control electric expansion valve with initial opening operation；
When the operation time after compressor start is less than the first Preset Time, control at the beginning of the operation aperture holding of electric expansion valve
Beginning aperture is constant.
2. air-conditioner abnormal sound removing method as claimed in claim 1, it is characterised in that described when the operation after compressor start
When time is less than the first Preset Time, after the operation aperture of control electric expansion valve keeps the step that initial opening is constant, also
Including:
When the operation time after compressor start is more than described first Preset Time, obtain the second Preset Time and compressor row
Temperature；
When the delivery temperature of compressor raises, increase the operation aperture of electric expansion valve in real time according to compressor exhaust temperature；
When the delivery temperature of compressor reduces, reduce primary electron according to compressor exhaust temperature every the second Preset Time swollen
The operation aperture of swollen valve.
3. air-conditioner abnormal sound removing method as claimed in claim 2, it is characterised in that described method also includes:
Obtain the running frequency changing value of compressor, target operating frequency changing value and the change of electric expansion valve object run aperture
Scope；
When the running frequency changing value of compressor is more than described target operating frequency changing value, control the operation of electric expansion valve
Aperture range of accommodation is less than described object run aperture excursion.
4. air-conditioner abnormal sound removing method as claimed in claim 3, it is characterised in that described method also includes:
When the running frequency changing value of compressor is less than or equal to described target operating frequency changing value, in conjunction with the fortune of compressor
Line frequency adjusts the second Preset Time；
The second Preset Time after adjusting, according to the operation aperture of compressor exhaust temperature regulation electric expansion valve.
5. the air-conditioner abnormal sound removing method as described in any one of Claims 1-4, it is characterised in that described method also includes:
When compressor exhaust temperature obtains abnormal, according to the operation aperture of target exhaust temperature regulation electric expansion valve.
6. an air-conditioner abnormal sound cancellation element, it is characterised in that including:
Control module, for when detecting that starting of air conditioner instructs, controls compressor start, and controls electric expansion valve with initially
Aperture is run；
Keep module, for when the operation time after compressor start is less than the first Preset Time, controlling electric expansion valve
Running aperture keeps initial opening constant.
7. air-conditioner abnormal sound cancellation element as claimed in claim 6, it is characterised in that described air-conditioner abnormal sound cancellation element is also
Including: acquisition module；
Described acquisition module, when the operation time after compressor start is more than described first Preset Time, obtains second
Preset Time and compressor exhaust temperature；
Described control module, is additionally operable to, when the delivery temperature of compressor raises, increase electricity in real time according to compressor exhaust temperature
The operation aperture of sub-expansion valve；When the delivery temperature of compressor reduces, according to compressor exhaust temperature when second presets
Between reduce the operation aperture of primary electron expansion valve.
8. air-conditioner abnormal sound cancellation element as claimed in claim 7, it is characterised in that
Described acquisition module, is additionally operable to obtain the running frequency changing value of compressor, target operating frequency changing value and electronics swollen
Swollen valve object run aperture excursion；
Described control module, is additionally operable to when the running frequency changing value of compressor is more than described target operating frequency changing value,
Control the operation aperture range of accommodation of electric expansion valve less than described object run aperture excursion.
9. air-conditioner abnormal sound cancellation element as claimed in claim 8, it is characterised in that described air-conditioner abnormal sound cancellation element is also
Including: adjusting module；
Described adjusting module, for the running frequency changing value when compressor less than or equal to described target operating frequency changing value
Time, the running frequency in conjunction with compressor adjusts the second Preset Time；
Described control module, is additionally operable to the second Preset Time after adjusting, swollen according to compressor exhaust temperature regulation electronics
The operation aperture of swollen valve.
10. the air-conditioner abnormal sound cancellation element as described in any one of claim 6 to 9, it is characterised in that
Described control module, is additionally operable to when compressor exhaust temperature obtains abnormal, swollen according to target exhaust temperature regulation electronics
The operation aperture of swollen valve.
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| CN106524361A (en) * | 2016-12-09 | 2017-03-22 | 广东美的制冷设备有限公司 | Air-conditioner and starting method thereof |
| CN107062580A (en) * | 2017-03-21 | 2017-08-18 | 珠海格力电器股份有限公司 | It is a kind of to reduce the control method and multi-gang air-conditioner of noise of indoor unit of air conditioner |
| CN107702270A (en) * | 2017-10-11 | 2018-02-16 | 珠海格力电器股份有限公司 | Control method for electronic expansion valve and device, air-conditioning |
| CN109341018A (en) * | 2018-10-19 | 2019-02-15 | Tcl空调器(中山)有限公司 | Air conditioning control method, air-conditioning and computer readable storage medium |
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| CN112066532A (en) * | 2020-08-20 | 2020-12-11 | 珠海格力电器股份有限公司 | Method and device for eliminating noise of air conditioner, electronic equipment and storage medium |
| CN114791151A (en) * | 2022-05-16 | 2022-07-26 | 美的集团武汉暖通设备有限公司 | Control method and device for electronic expansion valve of air conditioner, air conditioner and storage medium |
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| CN112066532B (en) * | 2020-08-20 | 2021-07-20 | 珠海格力电器股份有限公司 | Method and device for eliminating noise of air conditioner, electronic equipment and storage medium |
| CN114791151A (en) * | 2022-05-16 | 2022-07-26 | 美的集团武汉暖通设备有限公司 | Control method and device for electronic expansion valve of air conditioner, air conditioner and storage medium |
| CN114791151B (en) * | 2022-05-16 | 2023-11-24 | 美的集团武汉暖通设备有限公司 | Control method and device for electronic expansion valve of air conditioner, air conditioner and storage medium |
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