CN106288236B - Air conditioner compress control method and air conditioner - Google Patents
Air conditioner compress control method and air conditioner Download PDFInfo
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- CN106288236B CN106288236B CN201610879551.9A CN201610879551A CN106288236B CN 106288236 B CN106288236 B CN 106288236B CN 201610879551 A CN201610879551 A CN 201610879551A CN 106288236 B CN106288236 B CN 106288236B
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- current flow
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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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of air conditioner compress control method and air conditioner, wherein air conditioner compress control method the following steps are included: detection air-conditioner dash current flow；Each component operation of the air conditioner is controlled, according to the size of the current flow to maintain the pressure balance of the air-conditioner coolant circulation loop.Technical solution of the present invention proposes a kind of wider array of air conditioner compress control method of the scope of application.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of air conditioner compress control method and air conditioner.
Background technique
Air conditioner is mainly used for adjusting room temperature, is one of most common household electrical appliance.In the operation of air conditioner
In the operational process of process, particularly refrigeration mode, when temperature is higher, the pressure in refrigerant circulation circuit is generally higher, phase
It answers, the electric current of cooler compressor and the temperature of Inside coil are also higher.In order to protect compressor, when meeting in compressor
When the operation condition of portion's protector, protector be will be switched off.Meanwhile in order to avoid compressor protector fails, also set in air conditioner
It is equipped with high voltage protective switch and low-voltage protective switch.When the hypertonia of refrigerant circulation circuit or it is too low when, high voltage protective switch
Or low-voltage protective switch disconnects automatically, compressor power-off is shut down, in order to avoid damaged under too high or too low pressure.Current one kind
In air conditioner compress control method, by the Compressor Discharge Pressure and outdoor temperature that detect air conditioner；When compressor air-discharging pressure
When power is less than setting pressure or when outdoor temperature is less than set temperature, close on air-conditioner outdoor unit in multiple outdoor heat exchangers
Any one；Detect the temperature of current compressor pressure at expulsion and air conditioner indoor evaporator；It is vented according to current compressor
The temperature of pressure and indoor evaporator adjusts the back pressure of compressor, to maintain the pressure balance in refrigerant circulation circuit.But
It is that this method must switch high voltage protective and the signal link of low-voltage protective switch accesses indoor, and current many rooms
Son does not preset extra line when building for access, causes wiring difficult, above-mentioned air conditioner compress control method is fitted
It is extremely limited with range.
Summary of the invention
The main object of the present invention is to propose a kind of air conditioner compress control method and air conditioner, it is intended to solve above-mentioned wiring
Difficult problem, proposes a kind of wider array of air conditioner compress control method of the scope of application.
To achieve the above object, air conditioner compress control method proposed by the present invention, comprising the following steps:
Detect the current flow of air-conditioner dash；
Each component operation of the air conditioner is controlled, according to the size of the current flow to maintain the air-conditioner coolant
The pressure balance of circulation loop.
Preferably, it is run according to each component that the size of the current flow controls the air conditioner, to maintain the sky
The step of adjusting the pressure balance of device refrigerant circulation circuit, comprising:
Compare the current flow and shuts down electric current and early warning electric current；
When the current flow is greater than the shutdown electric current and is less than the early warning electric current, the current flow is judged
Variation tendency；
According to the variation tendency of the current flow, indoor fan revolving speed is controlled, to maintain the air-conditioner coolant to recycle
The pressure balance in circuit.
Preferably, according to the variation tendency of the current flow, the step of controlling indoor fan revolving speed, comprising:
When the current flow is on the rise, the indoor fan deceleration operating is controlled；
When the current flow is without ascendant trend, judge whether the revolving speed of the indoor fan is less than setting speed: if
It is then to control the indoor fan accelerated service；It is operated if it is not, then controlling the indoor fan by the setting speed.
Preferably, after the step of controlling the indoor fan deceleration operating, further includes:
Whether current flow described in real-time judge is on the rise；
When the current flow is on the rise, controls the indoor fan and further slow down operating；
When the current flow is without ascendant trend, adds up the indoor fan and slow down the time operated: when the interior
Blower slow down operating cumulative time reach setting run slowly the time when, control the indoor fan accelerated service.
Preferably, the step of judging the variation tendency of the current flow, comprising:
Judge whether the current flow is consistently less than the early warning electric current in the first preset time；
If so, judging time of the current flow in the second preset time worked as time detected value and be greater than previous detected value
Whether number is greater than setting number: if so, determining that the current flow is on the rise；If it is not, then determining the current flow
Without ascendant trend.
Preferably, the current flow and shut down electric current and the step of early warning electric current after, further includes:
When the current flow is not less than the early warning electric current, judge in third preset time whether is the current flow
Always it is not less than the early warning electric current:
If so, controlling the indoor fan is decelerated to minimum speed operating；Judge described current in the 4th preset time
Whether electric current is not less than the early warning electric current always: if so, controlling the compressor power-off of the air conditioner and controlling the sky
The display device of device is adjusted to prompt hypertonia.
Preferably, the current flow and shut down electric current and the step of early warning electric current after, further includes:
When the current flow is not more than the shutdown electric current, the return air temperature and inner disc temperature of the air conditioner are detected
Degree；
Judge whether the return air temperature and the difference of the inner disc temperature are greater than the setting temperature difference:
If so, controlling the display device prompt hypertonia, and add up the current flow no more than the shutdown electricity
The time of stream, and when the cumulative time reaching five preset times, it controls the compressor operation and controls the display
Device eliminates prompt；
If it is not, then controlling the display device prompt hypotony.
Present invention further propose that a kind of air conditioner, comprising:
Current detection module, for detecting the current flow of air-conditioner dash；
Control module, each component for controlling the air conditioner according to the size of the current flow is run, to maintain
The pressure balance of the air-conditioner coolant circulation loop.
Preferably, the control module includes:
Electric current comparing unit for the current flow and shuts down electric current and early warning electric current；
Electric current judging unit is used for when the current flow is greater than the shutdown electric current and is less than the early warning electric current,
Judge the variation tendency of the current flow；
Control unit controls indoor fan revolving speed, for the variation tendency according to the current flow to maintain the sky
Adjust the pressure balance of device refrigerant circulation circuit.
Preferably, described control unit is used for when the current flow is on the rise, is controlled the indoor fan and is subtracted
Speed operating；
The control module includes revolving speed judging unit, and the revolving speed judging unit is used in the current flow without rising
When trend, judge whether the revolving speed of the indoor fan is less than setting speed；
Described control unit is used for when the revolving speed of the indoor fan is less than the setting speed, controls the indoor wind
Machine accelerated service；When the revolving speed of the indoor fan is not less than the setting speed, controls the indoor fan and set by described
Determine rotation speed operation.
Preferably, the electric current judging unit be used for the indoor fan slow down operating after, described in real-time judge when
Whether preceding electric current is on the rise；
Described control unit is used for when the current flow is on the rise, is controlled the indoor fan and is further slowed down
Operating；
The control module includes time cumulation unit, and the time cumulation unit is used in the current flow without rising
When trend, adds up the indoor fan and slows down the time operated:
Described control unit is used to run slowly the time when the cumulative time of indoor fan deceleration operating reaches setting
When, control the indoor fan accelerated service.
Preferably, the electric current judging unit is for judging whether the current flow is small always in the first preset time
In the early warning electric current；
The electric current judging unit is for sentencing when the current flow is less than the early warning electric current in the first preset time
Whether the number for being greater than previous detected value when time detected value of the current flow in the second preset time that breaks is greater than setting time
Number.
Preferably, the electric current judging unit is used to judge the when the current flow is not less than the early warning electric current
Whether the current flow is not less than the early warning electric current always in three preset times:
Described control unit is used for when current flow described in third preset time is not less than the early warning electric current always,
It controls the indoor fan and is decelerated to minimum speed operating；
The electric current judging unit is for judging that whether the current flow is always not less than described in the 4th preset time
Early warning electric current:
Described control unit is used for when the current flow is not less than the early warning electric current always in the 4th preset time,
It controls the compressor power-off of the air conditioner and controls the display device prompt hypertonia of the air conditioner.
Preferably, the control module includes:
Temperature detecting unit, the temperature detecting unit are used for when the current flow is not more than the shutdown electric current,
Detect the return air temperature and inner disc temperature of the air conditioner；
Temperature judging unit, for judging whether the difference of the return air temperature and the inner disc temperature is greater than setting temperature
Difference；
Described control unit is used for the control when the difference of the return air temperature and the inner disc temperature is greater than the setting temperature difference
The display device prompts hypertonia,
The time cumulation unit is used to add up the current flow no more than the time for shutting down electric current；
Described control unit be used for the current flow no more than it is described shut down electric current time reach the 5th it is default when
Between when, control compressor operation and control the display device and eliminate prompt；
Described control unit is used for the control when the difference of the return air temperature and the inner disc temperature is no more than the setting temperature difference
Make the display device prompt hypotony.
In technical solution of the present invention, it is positively correlated using the pressure of air-conditioner coolant circulation loop and the current flow of control panel
Relationship, the current flow by detecting air-conditioner dash obtains the pressure condition of refrigerant circulation circuit, and then according to current
Each component operation of the size control air conditioner of electric current, to maintain the pressure balance of air-conditioner coolant circulation loop.Skill of the present invention
The parameter for needing to detect in art scheme machine side indoors, therefore need not be by rooms such as high voltage protective switch and low-voltage protective switch
The signal wire access interior of outer machine side avoids house and reserves the deficiency of wiring to air conditioner pressure control to obtain pressure condition
The limitation of method processed proposes a kind of air conditioner compress control method applied widely.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the flow diagram of one embodiment of the air condition of that present invention compress control method；
Fig. 2 is the structural schematic diagram of the air conditioner of Fig. 1；
Fig. 3 is the electrical block diagram of the air conditioner of Fig. 1；
Fig. 4 is to be less than early warning electric current and big in current flow in one specific embodiment of the air condition of that present invention compress control method
Flow diagram in the case where shutting down electric current；
Fig. 5 is the flow diagram of the step S220 of Fig. 4；
Fig. 6 is flow diagram of the step S230 of Fig. 4 in current flow situation on the rise；
Fig. 7 is flow diagram of the step S230 of Fig. 4 when current flow is without ascendant trend；
Fig. 8 is to be not less than early warning electric current feelings in current flow in one specific embodiment of the air condition of that present invention compress control method
Flow diagram under condition；
Fig. 9 is in current flow in one specific embodiment of the air condition of that present invention compress control method no more than shutdown electric current feelings
Flow diagram under condition；
Figure 10 is the module diagram of the air condition of that present invention；
Figure 11 is the cell schematics of the control module of Figure 10.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Control panel | 200 | Condenser |
| 300 | Outdoor fan | 400 | Evaporator |
| 500 | Indoor fan | 600 | Compressor |
| 700 | High voltage protective switch | 800 | Low-voltage protective switch |
| 900 | Four-way valve |
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of air conditioner compress control method.In the operational process of air conditioner, especially air conditioner exists
During running in a chiller mode, when temperature is higher, the pressure of air-conditioner coolant circulation loop is higher, correspondingly, air-conditioning
The electric current of device control panel is higher.In the present invention, the electric current of air-conditioner dash and the pressure of air-conditioner coolant circulation loop are utilized
Positively related relationship obtains the pressure condition of air-conditioner coolant circulation loop, accordingly by detecting the electric current of air-conditioner dash
Each component operation for controlling air conditioner, to maintain the pressure balance of air-conditioner coolant circulation loop, eliminates high voltage protective
Switch and low-voltage protective switch are connected to indoor line, improve the convenience of air conditioner compress control method.
In one embodiment of the invention, as shown in Figure 1 to Figure 3, the air conditioner compress control method the following steps are included:
Step S100: the current flow Ic of detection air-conditioner dash 100；
The current flow Ic of air-conditioner dash 100 and the current pressure of air-conditioner coolant circulation loop are positively correlated, however,
Compared to pressure detecting, current detecting has better convenience and accuracy, therefore carries out to the current flow Ic of control panel 100
Detection, to obtain the pressure condition of air conditioner.
Step S200: it is run according to each component that the size of current flow Ic controls air conditioner, to maintain air-conditioner coolant
The pressure balance of circulation loop.
According to the size of current flow Ic, the situation of the current pressure of refrigerant circulation circuit would know that, and then control air-conditioning
Each component of device is run, to maintain the pressure balance of air-conditioner coolant circulation loop.Air conditioner includes single-cooling air-conditioner and changes in temperature
Air conditioner for both device is a kind of structural schematic diagram of dual-purpose air conditioner for changing in temperature shown in Fig. 2, but be should be noted that in the present invention
Air conditioner compress control method be also applied for single-cooling air-conditioner.Under normal conditions, when air conditioner work in refrigeration mode, easily
There is the situation of hypertonia in refrigerant circulation circuit.In following embodiment, by mainly for refrigeration mode in the present invention
Air conditioner compress control method is illustrated, and certainly, which can also be used for remaining cold under heating mode
Pressure balance in matchmaker's circulation loop.As shown in Fig. 2, the refrigerant circulation circuit of air conditioner includes condenser 200, outdoor fan
300, evaporator 400, indoor fan 500, compressor 600, high voltage protective switch 700 and low-voltage protective switch 800 are formed by
Circuit further includes four-way valve 900 in dual-purpose air conditioner for changing in temperature, to realize the switching of refrigeration and heating mode.Specifically, control
Each component operation of air conditioner processed includes the operation and shutdown, display device of the revolving speed, compressor 600 of control indoor fan 500
The operation such as prompt of (not shown).As shown in figure 3, compressor 600, high voltage protective switch 700, low-voltage protective switch 800
It is electrically connected with control panel 100, any disconnection in high voltage protective switch 700 and low-voltage protective switch 800, then compressor 600
Power-off.Therefore, the operation with shutdown of compressor 600 can be manually performed under the prompt of display device by user, can also pass through height
Protective switch 700 or low-voltage protective switch 800 is pressed to execute automatically, when the hypertonia of refrigerant circulation circuit, high voltage protective is opened
It closes 700 to disconnect automatically, when the hypotony of refrigerant circulation circuit, low-voltage protective switch 800 disconnects automatically, so that compression
Machine 600 is out of service, to maintain the pressure balance in refrigerant circulation circuit, protects compressor 600.
In technical solution of the present invention, the current flow Ic of air-conditioner dash 100 is detected, according to the big of current flow Ic
It is small, each component operation of air conditioner is controlled, to maintain the pressure balance of air-conditioner coolant circulation loop.Due to the technology of the present invention side
The parameter that must be detected in case is located at indoor unit side, therefore need not be by rooms such as high voltage protective switch 700 and low-voltage protective switch 800
The signal link of outer machine side accesses interior, avoids house and reserves limitation of the wiring deficiency to air conditioner compress control method,
Propose a kind of air conditioner compress control method applied widely.
In a specific embodiment of the invention, as shown in figure 4, step S200 controls sky according to the size of current flow Ic
Each component operation of device is adjusted, to maintain the pressure balance of air-conditioner coolant circulation loop to include:
Step S210: comparing current flow Ic and shuts down electric current Is and early warning electric current Ia；
Wherein, the electric current that electric current Is refers to control panel 100 when compressor stops working is shut down, usually 1 Amps；Early warning
The electric current of control panel 100 when electric current Ia refers to the pressure that the pressure in refrigerant circulation circuit is higher than under air conditioner normal operating condition.
Under the normal operating condition of air conditioner, rated current Ir is usually 6 Amps, and early warning electric current Ia is greater than rated current
Ir, of course, early warning electric current Ia is also greater than shutdown electric current Is.
When current flow Ic is greater than and shuts down electric current Is and be less than early warning electric current Ia, step S220 is executed: the current electricity of judgement
Flow the variation tendency of Ic；
As Is < Ic < Ia, air conditioner is in normal operating condition, the variation tendency of current flow Ic is judged, so as to subsequent
The execution of step.
Step S230: according to the variation tendency of current flow Ic, the revolving speed of indoor fan 500 is controlled, to maintain air conditioner
The pressure balance of refrigerant circulation circuit.
In air conditioner operational process, current flow Ic is constantly in variation, i.e., the pressure in refrigerant circulation circuit is always
In variation, adjusts refrigerant circulation by controlling the revolving speed of indoor fan 500 according to the feedback result of current flow Ic and return
Pressure in road remains operational air conditioner in normal operating conditions to maintain the balance of pressure.
Specifically, as shown in figure 5, step S220 judges that the variation tendency of current flow Ic includes:
Step S221: judge whether current flow Ic is consistently less than early warning electric current Ia in the first preset time；
Because of situations such as delay that may be present in fluctuation existing for current flow Ic and jump and measurement process, only
It is less than early warning electric current Ia according to the current flow Ic at a certain moment, it is difficult to confirm that the pressure in refrigerant circulation circuit is maintained at normal
In range.Therefore, whether early warning electric current is consistently less than by the current flow Ic in detection a period of time, i.e. the first preset time
Ia is to further confirm that.Wherein, the first preset time specifically may be configured as 10 minutes
If so, thening follow the steps S222: judge in the second preset time current flow Ic before time detected value is greater than
Whether the number of secondary detected value is greater than setting number: if so, determining that current flow Ic is on the rise；If it is not, then determining to work as
Preceding electric current Ic is without ascendant trend.
If current flow Ic is consistently less than early warning electric current Ia in the first preset time, it can confirm that refrigerant follows under current state
The pressure of loop back path in the normal range, at this point, according to the variation tendency of pressure maintain its balance.By further judging
Whether the number for being greater than previous detected value when time detected value of current flow Ic is greater than setting number in the second preset time, obtains
The variation tendency situation of pressure power.Wherein, the second preset time can be sampled from one section in the first preset time, for example, when the
When one preset time is specifically configured to 10 minutes, the second preset time specifically be may be derived from certain 1~2 minute in 10 minutes.?
In two preset times, if time detected value of working as of current flow Ic is all larger than previous detected value, current flow Ic, which is in, rises shape
State.However, in actual conditions, it is contemplated that the fluctuation and jump of current flow Ic, even if there is ascendant trend in current flow Ic
In the case where, it is also possible to finite number of time occur works as the case where time detected value is less than previous detected value.Therefore, with set number as
Judgment criteria, the number for being greater than previous detected value when time detected value of current flow Ic is greater than setting time in the second preset time
When number, determine that current flow Ic is on the rise, otherwise, it is determined that current flow Ic is without ascendant trend.
Specifically, variation tendency of the step S230 according to current flow Ic, control 500 revolving speed of indoor fan include:
As shown in fig. 6, executing step S231 when current flow Ic is on the rise: control indoor fan 50, which slows down, to be transported
Turn；
In the case that current flow Ic is on the rise, shows that the pressure in refrigerant circulation circuit is on the rise, pass through
The deceleration operating of indoor fan 500 is controlled, the pressure in refrigerant circulation circuit is reduced, pressure is avoided persistently to rise to beyond normal model
It encloses.
As shown in fig. 7, executing step S232 when current flow Ic is without ascendant trend: judging the revolving speed of indoor fan 500
Whether setting speed is less than: if so, thening follow the steps S232a: control 500 accelerated service of indoor fan；If it is not, thening follow the steps
S232b: control indoor fan 500 is operated by setting speed.
In the case that current flow Ic is without ascendant trend, show the pressure in refrigerant circulation circuit without ascendant trend, at this point,
Without the revolving speed for reducing indoor fan 500.By judging whether the revolving speed of indoor fan 500 is less than setting speed, if so, control
500 accelerated service of indoor fan processed, to improve the working efficiency of air conditioner；Otherwise, indoor fan 500 is maintained to transport by setting speed
Turn, to keep the balance of room temperature, while causing refrigerant circulation to return after avoiding the revolving speed of indoor fan 500 from being greater than setting speed
Pressure in road rises.
Further, as shown in fig. 6, step S231 control indoor fan 500 slows down after operating, further includes:
Step S233: whether real-time judge current flow Ic is on the rise；
By the variation tendency real-time detection to current flow Ic, to realize the more effective pressure control based on feedback result
System.
When current flow Ic is on the rise, execute step S233a: control indoor fan 500, which further slows down, to be operated；
If indoor fan 500 slows down after operating, current flow Ic still keeps ascendant trend, shows in refrigerant circulation circuit
Pressure still there is ascendant trend, in order to avoid pressure persistently rises the balance of breakdown pressure, control indoor fan 500 into one
Step slows down operating to be depressured.
When current flow Ic is without ascendant trend, execute step S233b: accumulative indoor fan 500 slows down the time operated；
It executes step S234: judging whether the cumulative time reaches setting and run slowly the time: when adding up for the deceleration operating of indoor fan 500
Time reach setting run slowly the time when, execute step S234a: control 500 accelerated service of indoor fan.
If current flow Ic without ascendant trend, shows to follow by making the deceleration operating of indoor fan 500 prevent refrigerant
The ascendant trend of pressure in loop back path, deceleration run to setting and run slowly after the time, and the pressure in refrigerant circulation circuit is
Decline controls 500 accelerated service of indoor fan to improve the operational efficiency that air conditioner adjusts room temperature.Wherein, setting subtracts
Fast runing time can be specifically configured to 20 minutes.
In conclusion when current flow Ic is greater than and shuts down electric current Is and be less than early warning electric current Ia, air-conditioner coolant circulation
The pressure in circuit in the normal range, can maintain indoor fan 500 to operate by setting speed or near setting speed.In order to more
Pressure is controlled well, the variation tendency of real-time monitoring current flow Ic accordingly adjusts the revolving speed of indoor fan 500, in order to avoid pressure
Beyond normal range (NR).Wherein, control indoor fan 500 deceleration operating or accelerated service can be by way of being reduced or increased by gear
It realizes, since adjustable range each time is limited, is advantageously implemented accurate and flexible pressure feedback control, single is avoided to adjust
The excessive operating for leading to air conditioner of range is unbalance.
In this specific embodiment, when current flow Ic is not less than early warning electric current Ia, executes step S240: judging that third is pre-
If whether current flow Ic is not less than early warning electric current Ia always in the time:
As Ic >=Ia, it is contemplated that the fluctuation of electric current and jump situation, must to the pressure in refrigerant circulation circuit whether mistake
Height further confirms that, by judging that whether current flow Ic is always not less than early warning electricity in a period of time, i.e. third preset time
Ia is flowed to realize.Specifically, in order to avoid pressure it is really excessively high in the case where, further confirm that the time it takes is too long to compression
Machine 600 damages, and third preset time may be configured as 1~2 minute, relatively short.
If so, thening follow the steps S241: control indoor fan 500 is decelerated to minimum speed operating；
When the hypertonia in refrigerant circulation circuit, in order to realize rapid decompression, reduce the damage to compressor 600,
Control indoor fan 500 is directly decelerated to minimum speed operation.
After step S241, step S242 is continued to execute: judging whether always current flow Ic in the 4th preset time
Not less than early warning electric current Ia:
Wherein, the 4th preset time can be specifically set as 1~2 minute equal with third preset time, cold quickly to confirm
Pressure condition in matchmaker's circulation loop avoids acknowledging time is too long compressor 600 is caused to damage.
If so, thening follow the steps S242a: controlling the power-off of compressor 600 of air conditioner and control the display device of air conditioner
Prompt hypertonia.
When the current flow Ic of control panel 100 is still not less than early warning electric current Ia, show that indoor fan 500 is decelerated to most
The slow-speed of revolution is still not enough to reduce in pressure to normal range (NR), at this point, the power supply of compressor 600 is disconnected, to protect compressor 600,
User's hypertonia is prompted by display device simultaneously.Specifically, disconnecting the power supply of compressor 600 can be filled by user according to display
The prompt information set manually performs, and can also be disconnected in a high voltage state by high voltage protective switch 700 keeps compressor 600 disconnected
Electricity, i.e., it is automatic to execute.In addition, the prompt information of display device, which is also convenient for user, understands the reason of air conditioner is shut down, to be located
Reason.
In conclusion confirming the pressure in air-conditioner coolant circulation loop when current flow Ic is not less than early warning electric current Ia
After power is excessively high, in contrast more efficient measure is taken to implement decompression, in order to avoid damage compressor 600.Specifically, wind in control room
Machine 500 is decelerated to minimum speed operating, if the measure can not still reduce pressure to normal range (NR), powers off to compressor 600,
To protect compressor.
In this specific embodiment, when current flow Ic is no more than electric current Is is shut down, step S250 is executed: detection air conditioner
Return air temperature and inner disc temperature；
As Ic≤Is, compressor 600 is in shutdown status.Since hypertonia and hypotony may cause compression
The power-off of machine 600 is shut down, by detection return air temperature and the specific power-off reason of inner disc temperature judgement, to execute subsequent step.
Step S260: judge whether return air temperature and the difference of inner disc temperature are greater than the setting temperature difference:
If so, execution step S261: control display device prompts hypertonia, and accumulative current flow Ic is no more than shutdown
The time of electric current Ia；
Step S262: judge whether the cumulative time reaches the 5th preset time；
Within the cumulative time, compressor is disconnected, the pressure decline in refrigerant circulation circuit.Specifically, the 5th preset time
It may be configured as 20 minutes.
When the cumulative time reaching five preset times, execute step S262a: control compressor 600 is run and control is aobvious
Showing device eliminates prompt；
When the difference of return air temperature and inner disc temperature is greater than the setting temperature difference, shutdown is the display as caused by hypertonia
Device prompts hypertonia, so that user is handled according to specific reason of shutting down.In addition, air conditioner can also restore to transport automatically
Row, when downtime has reached five preset times, the pressure in refrigerant circulation circuit should have been had dropped to a certain degree, at this time
Control compressor 600 operates again, to regulate and control to room temperature.
If it is not, executing step S263: control display device prompts hypotony.
When the difference of return air temperature and inner disc temperature is no more than the setting temperature difference, show the refrigerating capacity decline of air conditioner,
Shutdown is caused by lacking low pressure caused by refrigerant, at this point, display device prompts hypotony, to indicate that user adds
Refrigerant makes air conditioner restore operating.
In conclusion compressor 600 is in off-position when current flow Ic is no more than electric current Is is shut down.According to return
The difference of air temperature and inner disc temperature, it may be determined that specifically power off reason, display device provides corresponding prompt information, so as to
Family executes corresponding operating, and air conditioner is made to resume operation.Particularly, when compressor 600 is shut down because of hypertonia, pressure decline
It after in normal range (NR), can be operated again according to the 5th preset time automatic control compressor 600, to improve air conditioner pressure
The intelligence of force control method.
The present invention also proposes a kind of air conditioner, to realize the above method, as shown in Figure 10, comprising:
Current detection module 110, for detecting the current flow of air-conditioner dash 100；
The current flow Ic of air-conditioner dash 100 and the current pressure of air-conditioner coolant circulation loop are positively correlated, and electric
Flowing detection module 110 has better convenience and accuracy, is detected, is obtained by the current flow Ic to control panel 100
Take the pressure condition of air conditioner.
Control module 120, each component for controlling air conditioner according to the size of current flow is run, to maintain air conditioner
The pressure balance of refrigerant circulation circuit.
According to the size of current flow Ic, the situation of the current pressure of refrigerant circulation circuit would know that, and then control air-conditioning
Each component of device is run, to maintain the pressure balance of air-conditioner coolant circulation loop.Air conditioner includes single-cooling air-conditioner and changes in temperature
Air conditioner for both device is a kind of structural schematic diagram of dual-purpose air conditioner for changing in temperature shown in Fig. 2, but be should be noted that in the present invention
Air conditioner be also possible to single-cooling air-conditioner.As shown in Fig. 2, the refrigerant circulation circuit of air conditioner includes condenser 200, outdoor wind
Machine 300, evaporator 400, indoor fan 500, compressor 600, high voltage protective switch 700 and low-voltage protective switch 800 are formed
Circuit further include four-way valve 900 in dual-purpose air conditioner for changing in temperature, with realize refrigeration and heating mode switching.Specifically,
Control module 120 control air conditioner each component operation include control indoor fan 500 revolving speed, compressor 600 operation with
The operations such as shutdown, the prompt of display device (not shown).As shown in figure 3, compressor 600, high voltage protective switch 700, low
Protective switch 800 and control panel 100 is pressed to be electrically connected, any one breaks in high voltage protective switch 700 and low-voltage protective switch 800
It opens, then compressor 600 powers off.Therefore, the operation with shutdown of compressor 600 can be held manually under the prompt of display device by user
Row can also be executed automatically by high voltage protective switch 700 or low-voltage protective switch 800, when the hypertonia of refrigerant circulation circuit
When, high voltage protective switch 700 disconnects automatically, and when the hypotony of refrigerant circulation circuit, low-voltage protective switch 800 is from dynamic circuit breaker
It opens, so that compressor 600 is out of service, to maintain the pressure balance in refrigerant circulation circuit, protects compressor 600.Its
In, current detection module 110 and control module 120 are set on control panel 100, specifically, current detection module 110 can be electricity
Current detection circuit etc., control module 120 can be micro-control unit MCU etc..
As shown in figure 11, control module 120 includes:
Electric current comparing unit 121, for comparing current flow Ic and shutting down electric current Is and early warning electric current Ia；
Wherein, the electric current that electric current Is refers to control panel 100 when compressor stops working is shut down, usually 1 Amps；Early warning
The electric current of control panel 100 when electric current Ia refers to the pressure that the pressure in refrigerant circulation circuit is higher than under air conditioner normal operating condition.
Under the normal operating condition of air conditioner, rated current Ir is usually 6 Amps, and early warning electric current Ia is greater than rated current
Ir, of course, early warning electric current Ia is also greater than shutdown electric current Is.
Electric current judging unit 122, for judging when current flow Ic is greater than and shuts down electric current Is and be less than early warning electric current Ia
The variation tendency of current flow Ic；
Control unit 123 controls 500 revolving speed of indoor fan for the variation tendency according to current flow Ic, to remain empty
Adjust the pressure balance of device refrigerant circulation circuit.
In air conditioner operational process, current flow Ic is constantly in variation, i.e., the pressure in refrigerant circulation circuit is always
In variation, according to the feedback result of current flow Ic, control unit 123 controls the revolving speed of indoor fan 500, adjusts refrigerant
Pressure in circulation loop remains operational air conditioner in normal operating conditions to maintain the balance of pressure.
Specifically, electric current judging unit 122 is for judging whether current flow Ic is consistently less than in the first preset time
Early warning electric current Ia；
Because of situations such as delay that may be present in fluctuation existing for current flow Ic and jump and measurement process, only
It is less than early warning electric current Ia according to the current flow Ic at a certain moment, it is difficult to confirm that the pressure in refrigerant circulation circuit is maintained at normal
In range.Therefore, whether always electric current judging unit 122 detects current flow Ic for a period of time, i.e. in the first preset time
Less than early warning electric current Ia to further confirm that.Wherein, the first preset time specifically may be configured as 10 minutes
If so, electric current judging unit 122 be used to judge in the second preset time current flow Ic when secondary detected value is big
Whether it is greater than setting number in the number of previous detected value.
If current flow Ic is consistently less than early warning electric current Ia in the first preset time, it can confirm that refrigerant follows under current state
The pressure of loop back path in the normal range, at this point, according to the variation tendency of pressure maintain its balance.Electric current judging unit
122 further judge whether the number for being greater than previous detected value when time detected value of current flow Ic is big in the second preset time
In setting number, the variation tendency situation of pressure is obtained.Wherein, the second preset time can be sampled from one in the first preset time
Section, for example, when the first preset time is specifically configured to 10 minutes, the second preset time specifically may be derived from 10 minutes certain 1
~2 minutes.In the second preset time, if time detected value of working as of current flow Ic is all larger than previous detected value, current flow
Ic is in propradation.However, in actual conditions, it is contemplated that the fluctuation and jump of current flow Ic, even if in current flow Ic
In the case where with ascendant trend, it is also possible to which finite number of time occur works as the case where time detected value is less than previous detected value.Therefore,
Electric current judging unit 122 to set number as judgment criteria, in the second preset time current flow Ic when time detected value it is big
When the number of previous detected value is greater than setting number, determine that current flow Ic is on the rise, otherwise, it is determined that current flow Ic
Without ascendant trend.
When current flow Ic is on the rise, control unit 123 is for controlling the deceleration operating of indoor fan 500；
In the case that current flow Ic is on the rise, show that the pressure in refrigerant circulation circuit is on the rise, controls
Unit 123 controls the deceleration operating of indoor fan 500, reduces the pressure in refrigerant circulation circuit, avoids pressure from persistently rising to super
Normal range (NR) out.
Control module 120 includes revolving speed judging unit 124, for judging interior when current flow Ic is without ascendant trend
Whether the revolving speed of blower 500 is less than setting speed；
Control unit 123 is used for when the revolving speed of indoor fan 500 is less than setting speed, and control indoor fan 500 accelerates
Operating；When the revolving speed of indoor fan 500 is not less than setting speed, control indoor fan 500 is operated by setting speed.
In the case that current flow Ic is without ascendant trend, show the pressure in refrigerant circulation circuit without ascendant trend, at this point,
Without the revolving speed for reducing indoor fan 500.Revolving speed judging unit 124 judges whether the revolving speed of indoor fan 500 is less than setting and turns
Speed, if so, control unit 123 controls 500 accelerated service of indoor fan, to improve the working efficiency of air conditioner；Otherwise, control is single
Member 123 maintains indoor fan 500 to operate by setting speed, to keep the balance of room temperature, while avoiding indoor fan 500
Revolving speed causes the pressure in refrigerant circulation circuit to rise after being greater than setting speed.
Further, after electric current judging unit 122 is for the deceleration operating of blower 500 indoors, real-time judge is currently electric
Whether on the rise flow Ic；
By the variation tendency real-time detection to current flow Ic, the more effective pressure control based on feedback result is realized
System.
Control unit 123 is used for when current flow Ic is on the rise, and control indoor fan 500, which further slows down, to be transported
Turn；
If indoor fan 500 slows down after operating, current flow Ic still keeps ascendant trend, shows in refrigerant circulation circuit
Pressure still there is ascendant trend, in order to avoid pressure persistently rises the balance of breakdown pressure, in 123 control room of control unit
Blower 500 slows down operating further to be depressured.
Control module 120 includes time cumulation unit 125, for adding up interior when current flow Ic is without ascendant trend
Blower 500 slows down the time operated:
Control unit 123 be used for when indoor fan 500 slow down operating cumulative time reach setting run slowly the time when,
Control 500 accelerated service of indoor fan.
If current flow Ic shows that control unit 123 controls the deceleration operating of indoor fan 500 without ascendant trend
The ascendant trend of the pressure in refrigerant circulation circuit is prevented, deceleration runs to setting and runs slowly after the time, and refrigerant circulation returns
Pressure in road has declined, and in order to improve the operational efficiency that air conditioner adjusts room temperature, control unit 123 controls indoor fan
500 accelerated services.Wherein, setting the time of running slowly can be specifically configured to 20 minutes.
Electric current judging unit 122 is used to judge in third preset time when current flow Ic is not less than early warning electric current Ia
Whether current flow Ic is not less than early warning electric current Ia always:
As Ic >=Ia, it is contemplated that the fluctuation and jump of electric current, must it is whether excessively high to the pressure in refrigerant circulation circuit into
The confirmation of one step, electric current judging unit 122 judge whether current flow Ic is not less than always in a period of time, i.e. third preset time
Early warning electric current Ia.Specifically, in order to avoid pressure it is really excessively high in the case where, further confirm that the time it takes is too long to pressure
Contracting machine 600 damages, and third preset time may be configured as 1~2 minute, relatively short.
Control unit 123 is used for when current flow Ic is not less than early warning electric current Ia always in third preset time, control
Indoor fan 500 is decelerated to minimum speed operating；
When the hypertonia in refrigerant circulation circuit, the control indoor fan 500 of control unit 123 is directly decelerated to minimum
Revolving speed operation reduces the damage to compressor 600 to realize decompression rapidly.
Electric current judging unit 122 is for judging that whether current flow Ic is always not less than early warning electric current in the 4th preset time
Ia:
Wherein, the 4th preset time can be specifically set as 1~2 minute equal with third preset time, keep electric current judgement single
Member 122 can quickly confirm the pressure condition in refrigerant circulation circuit, avoid acknowledging time is too long compressor 600 is caused to damage.
When current flow Ic is not less than early warning electric current Ia always in the 4th preset time, control unit 123 controls air-conditioning
The compressor 600 of device powers off and controls the display device prompt hypertonia of air conditioner.
When the current flow Ic of control panel 100 is still not less than early warning electric current Ia, show that indoor fan 500 is decelerated to most
The slow-speed of revolution is still not enough to reduce in pressure to normal range (NR), at this point, the power supply of compressor 600 is disconnected, to protect compressor 600,
User's hypertonia is prompted by display device simultaneously.Specifically, disconnecting the power supply of compressor 600 can be filled by user according to display
The prompt information set manually performs, and can also be disconnected in a high voltage state by high voltage protective switch 700 keeps compressor 600 disconnected
Electricity, i.e., it is automatic to execute.In addition, the prompt information of display device, which is also convenient for user, understands the reason of air conditioner is shut down, to be located
Reason.
Control module 120 includes:
Temperature detecting unit 126, for detecting the return air temperature of air conditioner when current flow Ic is no more than electric current Ia is shut down
Degree and inner disc temperature；
As Ic≤Is, compressor 600 is in shutdown status.Since hypertonia and hypotony may cause compression
The power-off of machine 600 is shut down, and detects return air temperature and inner disc temperature by temperature detecting unit 126, to judge specific power-off reason,
Convenient for executing subsequent step.
Temperature judging unit 127, for judging whether return air temperature and the difference of inner disc temperature are greater than the setting temperature difference；
Control unit 123 is used to control display device when the difference of return air temperature and inner disc temperature is greater than the setting temperature difference
Hypertonia is prompted,
Time cumulation unit 125 is used to add up current flow Ic no more than the time for shutting down electric current Is；
Control unit 123 is used for when current flow Ic reaches five preset times no more than the time for shutting down electric current Is,
It controls the operation of compressor 600 and control display device eliminates prompt；
When the difference of return air temperature and inner disc temperature is greater than the setting temperature difference, shutdown is the control as caused by hypertonia
Unit 123 controls display device and prompts hypertonia, so that user is handled according to specific reason of shutting down.In addition, control
The also controllable air conditioner of unit 123 resumes operation automatically, presets when the downtime that time accumulated unit 125 adds up reaches the 5th
When the time, the pressure in refrigerant circulation circuit should have been had dropped to a certain degree, and control unit 123 controls compressor 600 at this time
Again it operates.Wherein, the 5th preset time specifically may be configured as 20 minutes.
Control unit 123 is used for when the difference of return air temperature and inner disc temperature is no more than the setting temperature difference, control display dress
Set prompt hypotony.
When the difference of return air temperature and inner disc temperature is no more than the setting temperature difference, show the refrigerating capacity decline of air conditioner,
Shutdown is caused by lacking low pressure caused by refrigerant, at this point, control unit 123, which controls display device, prompts pressure mistake
It is low, to indicate that user adds refrigerant, air conditioner is made to restore operating.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of air conditioner compress control method, which comprises the following steps:
Detect the current flow of air-conditioner dash；
Each component operation of the air conditioner is controlled, according to the size of the current flow to maintain the air-conditioner coolant to recycle
The pressure balance in circuit, specifically includes: the current flow and shutdown electric current and early warning electric current；It is big in the current flow
In the shutdown electric current and be less than the early warning electric current when, judge the variation tendency of the current flow；According to the current electricity
The variation tendency of stream controls indoor fan revolving speed, to maintain the pressure balance of the air-conditioner coolant circulation loop；Work as described
When preceding electric current is on the rise, controls the indoor fan and slow down operating；When the current flow is without ascendant trend, institute is judged
Whether the revolving speed for stating indoor fan is less than setting speed: if so, controlling the indoor fan accelerated service；If it is not, then controlling
The indoor fan is operated by the setting speed；
Wherein, the detection of the current flow of the control panel is located at the indoor pusher side of the air conditioner.
2. air conditioner compress control method as described in claim 1, which is characterized in that control the indoor fan deceleration operating
The step of after, further includes:
Whether current flow described in real-time judge is on the rise；
When the current flow is on the rise, controls the indoor fan and further slow down operating；
When the current flow is without ascendant trend, adds up the indoor fan and slow down the time operated: when the indoor fan
Slow down operating cumulative time reach setting run slowly the time when, control the indoor fan accelerated service.
3. air conditioner compress control method as described in claim 1, which is characterized in that judge that the variation of the current flow becomes
The step of gesture, comprising:
Judge whether the current flow is consistently less than the early warning electric current in the first preset time；
If so, judging that the number for being greater than previous detected value when time detected value of the current flow is in the second preset time
It is no to be greater than setting number: if so, determining that the current flow is on the rise；If it is not, then determining that the current flow is supreme
The trend of liter.
4. air conditioner compress control method as described in claim 1, which is characterized in that the current flow and shutdown electricity
After the step of stream and early warning electric current, further includes:
When the current flow is not less than the early warning electric current, judge whether always the current flow in third preset time
Not less than the early warning electric current:
If so, controlling the indoor fan is decelerated to minimum speed operating；Judge the current flow in the 4th preset time
Whether the early warning electric current is not less than always: if so, controlling the compressor power-off of the air conditioner and controlling the air conditioner
Display device prompt hypertonia.
5. air conditioner compress control method as described in claim 1, which is characterized in that the current flow and shutdown electricity
After the step of stream and early warning electric current, further includes:
When the current flow is not more than the shutdown electric current, the return air temperature and inner disc temperature of the air conditioner are detected；
Judge whether the return air temperature and the difference of the inner disc temperature are greater than the setting temperature difference:
If so, control display device prompts hypertonia, and adds up time of the current flow no more than the shutdown electric current,
And when the cumulative time reaching five preset times, control compressor, which runs and controls the display device, eliminates prompt；
If it is not, then controlling the display device prompt hypotony.
6. a kind of air conditioner characterized by comprising
Current detection module, for detecting the current flow of air-conditioner dash；
Control module, each component for controlling the air conditioner according to the size of the current flow is run, described in maintaining
The pressure balance of air-conditioner coolant circulation loop, the control module specifically include:
Electric current comparing unit for the current flow and shuts down electric current and early warning electric current；
Electric current judging unit, for judging when the current flow is greater than the shutdown electric current and is less than the early warning electric current
The variation tendency of the current flow；
Control unit controls indoor fan revolving speed, for the variation tendency according to the current flow to maintain the air conditioner
The pressure balance of refrigerant circulation circuit；Described control unit is used for when the current flow is on the rise, controls the room
Inner blower, which slows down, to be operated；The control module includes revolving speed judging unit, and the revolving speed judging unit is used in the current electricity
When stream is without ascendant trend, judge whether the revolving speed of the indoor fan is less than setting speed；Described control unit is used for when described
When the revolving speed of indoor fan is less than the setting speed, the indoor fan accelerated service is controlled；When turning for the indoor fan
When speed is not less than the setting speed, controls the indoor fan and operated by the setting speed；
Wherein, the detection of the current flow of the control panel is located at the indoor pusher side of the air conditioner.
7. air conditioner as claimed in claim 6, which is characterized in that the electric current judging unit in the indoor fan for subtracting
After speed operating, whether current flow described in real-time judge is on the rise；
Described control unit is used for when the current flow is on the rise, is controlled the indoor fan and is further slowed down fortune
Turn；
The control module includes time cumulation unit, and the time cumulation unit is used in the current flow without ascendant trend
When, add up the indoor fan and slow down the time operated:
Described control unit be used for when the indoor fan slow down operating cumulative time reach setting run slowly the time when, control
Make the indoor fan accelerated service.
8. air conditioner as claimed in claim 6, which is characterized in that the electric current judging unit is for judging when first is default
Whether the interior current flow is consistently less than the early warning electric current；
The electric current judging unit is for judging when the current flow is less than the early warning electric current in the first preset time
Whether the number for being greater than previous detected value when time detected value of the current flow is greater than setting number in second preset time.
9. air conditioner as claimed in claim 6, which is characterized in that the electric current judging unit be used for the current flow not
When less than the early warning electric current, judge that whether the current flow is always not less than the early warning electric current in third preset time:
Described control unit is used for when current flow described in third preset time is not less than the early warning electric current always, control
The indoor fan is decelerated to minimum speed operating；
The electric current judging unit is for judging that whether the current flow is always not less than the early warning in the 4th preset time
Electric current:
Described control unit is used for when the current flow is not less than the early warning electric current always in the 4th preset time, control
The compressor of the air conditioner powers off and controls the display device prompt hypertonia of the air conditioner.
10. air conditioner as claimed in claim 7, which is characterized in that the control module includes:
Temperature detecting unit, the temperature detecting unit are used for the detection when the current flow is not more than the shutdown electric current
The return air temperature and inner disc temperature of the air conditioner；
Temperature judging unit, for judging whether the return air temperature and the difference of the inner disc temperature are greater than the setting temperature difference；
Described control unit is used for the control display when the difference of the return air temperature and the inner disc temperature is greater than the setting temperature difference
Device prompts hypertonia,
The time cumulation unit is used to add up the current flow no more than the time for shutting down electric current；
Described control unit is used for when the current flow reaches five preset times no more than the time for shutting down electric current,
Control compressor, which runs and controls the display device, eliminates prompt；
Described control unit is used to control institute when the difference of the return air temperature and the inner disc temperature is no more than the setting temperature difference
State display device prompt hypotony.
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| US20200191435A1 (en) * | 2017-04-04 | 2020-06-18 | Mitsubishi Electric Corporation | Outdoor unit of heat-pump hot water dispenser |
| CN107655173B (en) * | 2017-10-24 | 2020-07-28 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioning system and computer readable storage medium |
| CN107869829B (en) * | 2017-11-14 | 2019-12-24 | 珠海格力电器股份有限公司 | Air conditioner control method and device and air conditioner |
| CN109899945A (en) * | 2019-03-14 | 2019-06-18 | 海信（广东）空调有限公司 | Outdoor unit, variable frequency air conditioner and control method thereof |
| CN110469947B (en) * | 2019-08-29 | 2021-04-23 | 重庆美的通用制冷设备有限公司 | Protection control method and system for air conditioner, air conditioner and readable storage medium |
| CN112178802B (en) * | 2020-09-30 | 2021-10-29 | 青岛海尔空调器有限总公司 | Method and device for determining installation position of air conditioner outdoor unit and air conditioner |
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