CN106288130A - The control method of air-conditioner outdoor unit motor and air-conditioner - Google Patents
The control method of air-conditioner outdoor unit motor and air-conditioner Download PDFInfo
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- CN106288130A CN106288130A CN201510283017.7A CN201510283017A CN106288130A CN 106288130 A CN106288130 A CN 106288130A CN 201510283017 A CN201510283017 A CN 201510283017A CN 106288130 A CN106288130 A CN 106288130A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000004378 air conditioning Methods 0.000 abstract description 53
- 238000005057 refrigeration Methods 0.000 abstract description 18
- 238000001704 evaporation Methods 0.000 abstract description 12
- 230000005494 condensation Effects 0.000 description 12
- 238000009833 condensation Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 206010020852 Hypertonia Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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Abstract
The invention discloses the control method of a kind of air-conditioner outdoor unit motor, comprise the following steps: in cooling mode, when the ambient temperature residing for air-conditioner outdoor unit is less than preset temperature, in acquisition compressor exhaust pipe, the air pressure difference between aerofluxus air pressure and compressor return air pipe inner return-air air pressure is as initial gas pressure difference；According to the size of described initial gas pressure difference, adjust the rotating speed of air-conditioner outdoor unit motor to corresponding rotating speed.The invention also discloses a kind of air-conditioner.The control method of air-conditioner outdoor unit motor provided by the present invention, by according to aerofluxus air pressure in compressor exhaust pipe and the size of the initial gas pressure difference between compressor return air pipe inner return-air air pressure, by the adjustment of rotational speed of air-conditioner outdoor unit motor to corresponding rotating speed, make between the condensing pressure of this air conditioning system and evaporating pressure, to form normal pressure reduction to adjust the condensing pressure of this air conditioning system and evaporating pressure, thus promote this air conditioning system refrigeration stability at low ambient temperatures and efficiency.
Description
Technical field
The present invention relates to air-conditioner technical field, particularly relate to the control method of a kind of air-conditioner outdoor unit motor
And air-conditioner.
Background technology
Under normal circumstances, common air-conditioner only freezes in the case of ambient temperature is higher,
Therefore the most common air-conditioner generally only focuses on the comfort level and reliability freezed in high temperature environments.And it is right
The Space, Place that airtight caloric value is bigger in communication base station, bar etc., in the feelings that ambient temperature is relatively low
Under condition, indoor temperature is the highest, now needs air-conditioner to freeze at low ambient temperatures.At present
When common air-conditioner freezes at low ambient temperatures, owing to ambient temperature is relatively low, condensation effect is very
Good, if the rotating speed of air-conditioner outdoor unit motor is too high, the condensing pressure that can cause air conditioning system is too low and evaporates
Hypertonia, thus cause the condensing pressure of air conditioning system and evaporating pressure cannot form pressure reduction, refrigeration effect
The poorest；If the rotating speed of air-conditioner outdoor unit motor is too low, the condensing pressure that can cause air conditioning system is too high and steams
Send out hypotony, thus cause pressure reduction between the condensing pressure of air conditioning system and evaporating pressure excessive and cold
Solidifying hypertonia can increase the damage probability of condenser, and evaporating pressure is too low, and air-conditioner can be caused to prevent
, there is compressor shutdown phenomenon in freeze protection, and ultimately resulting in air-conditioner cannot normally freeze.So, carry
For the control method of a kind of air-conditioner outdoor unit motor, steady to promote air conditioning system refrigeration at low ambient temperatures
Qualitative, actually necessary.
Foregoing is only used for auxiliary and understands technical scheme, does not represent and recognizes that foregoing is
Prior art.
Summary of the invention
Present invention is primarily targeted at and the control method of a kind of air-conditioner outdoor unit motor and a kind of sky are provided
Adjust device, it is intended to solve air conditioning system in prior art and freeze at low ambient temperatures instability and refrigeration efficiency
Low technical problem.
For achieving the above object, the control method of a kind of air-conditioner outdoor unit motor that the present invention provides, including
Following steps:
In cooling mode, when the ambient temperature residing for air-conditioner outdoor unit is less than preset temperature, pressure is obtained
In contracting machine exhaustor, the air pressure difference between aerofluxus air pressure and compressor return air pipe inner return-air air pressure is as initially
Air pressure difference；
According to the size of described initial gas pressure difference, adjust the rotating speed of air-conditioner outdoor unit motor to corresponding rotating speed.
Preferably, the described size according to described initial gas pressure difference, adjust turning of air-conditioner outdoor unit motor
Speed includes to the step of corresponding rotating speed:
When described initial gas pressure difference is less than or equal to the first preset pressure difference, adjust air-conditioner outdoor unit
The rotating speed of motor is to the first rotating speed；
When described initial gas pressure difference is more than the first preset pressure difference and less than or equal to the second preset pressure
During difference, adjust the rotating speed of air-conditioner outdoor unit motor to the second rotating speed；
When described initial gas pressure difference is more than the second preset pressure difference, adjust air-conditioner outdoor unit motor
Rotating speed is to the 3rd rotating speed.
Preferably, described first rotating speed is less than described second rotating speed, and described second rotating speed is less than the described 3rd
Rotating speed.
Preferably, described first rotating speed is between 0rpm to 450rpm, and described second rotating speed is at 450rpm
Between 750rpm, described 3rd rotating speed is between 750rpm to 1000rpm.
Preferably, the described size according to described initial gas pressure difference, adjust turning of air-conditioner outdoor unit motor
After the step of the most corresponding rotating speed of speed, also include:
Every prefixed time interval, in obtaining compressor exhaust pipe, aerofluxus air pressure returns in compressor return air pipe
Air pressure difference between gas air pressure is as current gas pressure difference；
When described current gas pressure difference is less than or equal to the first preset pressure difference, by outdoor machine of air-conditioner
The current rotating speed of machine runs after reducing the first speed variable；
When described current gas pressure difference is more than the first preset pressure difference and less than or equal to the second preset pressure
During difference, air-conditioner outdoor unit motor runs with current rotating speed；
When described current gas pressure difference is more than the second preset pressure difference, working as air-conditioner outdoor unit motor
Front rotating speed runs after increasing by the second speed variable.
Additionally, for achieving the above object, the present invention also provides for a kind of air-conditioner, including:
Acquisition module, in cooling mode, when the ambient temperature residing for air-conditioner outdoor unit is less than presetting
During temperature, obtain the gas between aerofluxus air pressure and compressor return air pipe inner return-air air pressure in compressor exhaust pipe
Pressure difference is as initial gas pressure difference；
First control module, for the size according to described initial gas pressure difference, adjusts outdoor machine of air-conditioner
The rotating speed of machine is to corresponding rotating speed.
Preferably, described first control module includes:
First control unit, for being less than or equal to the first preset pressure difference in described initial gas pressure difference
Time, adjust the rotating speed of air-conditioner outdoor unit motor to the first rotating speed；
Second control unit, for and being less than more than the first preset pressure difference in described initial gas pressure difference
Or during equal to the second preset pressure difference, adjust the rotating speed of air-conditioner outdoor unit motor to the second rotating speed；
3rd control unit, for when described initial gas pressure difference is more than the second preset pressure difference, adjusting
The rotating speed of whole air-conditioner outdoor unit motor is to the 3rd rotating speed.
Preferably, described first rotating speed is less than described second rotating speed, and described second rotating speed is less than the described 3rd
Rotating speed.
Preferably, described first rotating speed is between 0rpm to 450rpm, and described second rotating speed is at 450rpm
Between 750rpm, described 3rd rotating speed is between 750rpm to 1000rpm.
Preferably, the first acquisition module is additionally operable to turning the adjustment of rotational speed of air-conditioner outdoor unit motor to corresponding
After speed, every prefixed time interval, obtain aerofluxus air pressure and compressor return air pipe in compressor exhaust pipe
Air pressure difference between inner return-air air pressure is as current gas pressure difference；
The control device of described air-conditioner outdoor unit motor also includes:
Second control module, for being less than or equal to the first preset pressure difference in described current gas pressure difference
Time, run after the current rotating speed of air-conditioner outdoor unit motor is reduced the first speed variable；And for described
When current gas pressure difference is more than the first preset pressure difference and less than or equal to the second preset pressure difference, control
Air-conditioner outdoor unit motor processed runs with current rotating speed；And for being more than second in described current gas pressure difference
During preset pressure difference, run after the current rotating speed of air-conditioner outdoor unit motor is increased the second speed variable.
The control method of air-conditioner outdoor unit motor provided by the present invention, by according in compressor exhaust pipe
The size of the initial gas pressure difference between aerofluxus air pressure and compressor return air pipe inner return-air air pressure, by air conditioning chamber
The adjustment of rotational speed of outer dynamo-electric machine changes the condensation efficiency of the condenser of air-conditioner outdoor unit to corresponding rotating speed,
Condensing pressure and the steaming of this air conditioning system is made to adjust the condensing pressure of this air conditioning system and evaporating pressure
Send out and between pressure, form normal pressure reduction, thus it is stable to promote this air conditioning system refrigeration at low ambient temperatures
Property and efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of control method one embodiment of air-conditioner outdoor unit motor of the present invention；
Fig. 2 is the schematic flow sheet of another embodiment of control method of air-conditioner outdoor unit motor of the present invention；
Fig. 3 is the high-level schematic functional block diagram of air-conditioner one embodiment of the present invention；
Fig. 4 is the refinement high-level schematic functional block diagram of acquisition module in air-conditioner in Fig. 3；
Fig. 5 is the refinement high-level schematic functional block diagram of the first control module in air-conditioner in Fig. 3；
Fig. 6 is the high-level schematic functional block diagram of another embodiment of air-conditioner of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
The present invention provides the control method of a kind of air-conditioner outdoor unit motor.
Flow process signal with reference to control method one embodiment that Fig. 1, Fig. 1 are air-conditioner outdoor unit motor of the present invention
Figure.
In one embodiment, the control method of this air-conditioner outdoor unit motor includes:
Step S10, in cooling mode, when the ambient temperature residing for air-conditioner outdoor unit is less than preset temperature,
In acquisition compressor exhaust pipe, the air pressure difference between aerofluxus air pressure and compressor return air pipe inner return-air air pressure is made
For initial gas pressure difference；
In the present embodiment, air-conditioner outdoor unit is provided with one for the temperature sensor of monitoring of environmental temperature.Should
After air-conditioner enters refrigeration mode, its control system receives the ambient temperature that temperature sensor is monitored,
And when ambient temperature is less than preset temperature, obtain aerofluxus air pressure and compressor return air in compressor exhaust pipe
Air pressure difference between pipe inner return-air air pressure is as initial gas pressure difference.In the present embodiment, preset temperature can
With any one temperature value being set in 15 DEG C to 22 DEG C, normally, preset temperature is set to 17 DEG C, when
Temperature sensor monitors to ambient temperature less than preset temperature time, the control system of air-conditioner can be determined that into
Enter the operating mode freezed at low ambient temperatures.In the present embodiment, specifically, this air-conditioner is at compressor
Exhaustor is provided with the high-pressure pressure sensor for measuring aerofluxus air pressure, and on the muffler of compressor
It is provided with the low-pressure sensor for measuring return-air air pressure.When this air conditioning system enters at low ambient temperatures
After the operating mode of refrigeration, its control system receives the aerofluxus air pressure P measured by high-pressure pressure sensorHighWith low
Return-air air pressure P measured by pressure pressure sensorLow, and aerofluxus atmospheric pressure value is deducted return-air atmospheric pressure value and obtains
Arrive air pressure difference DELTA P between the two, i.e. Δ P=PHigh-PLow, and by now obtained air pressure difference DELTA P
It is designated initial gas pressure difference DELTA PBegin。
Step S20, according to the size of described initial gas pressure difference, adjusts the rotating speed of air-conditioner outdoor unit motor extremely
Corresponding rotating speed.
In the present embodiment, according to described initial gas pressure difference DELTA PBeginSize, the control system of air-conditioner will
The adjustment of rotational speed of air-conditioner outdoor unit motor changes the condensation of the condenser of air-conditioner outdoor unit to corresponding rotating speed
Efficiency, makes the condensation pressure of this air conditioning system to adjust the condensing pressure of this air conditioning system and evaporating pressure
Form normal pressure reduction between power and evaporating pressure, thus promote this air conditioning system system at low ambient temperatures
Cold stability and efficiency.
In the present embodiment, further, step S20 specifically includes:
When described initial gas pressure difference DELTA PBeginDuring less than or equal to the first preset pressure difference DELTA P1, perform step
Rapid S201；When described initial gas pressure difference DELTA PBeginMore than the first preset pressure difference DELTA P1 and less than or etc.
When the second preset pressure difference DELTA P2, perform step S202；When described initial gas pressure difference DELTA PBeginGreatly
When the second preset pressure difference DELTA P2, execution step S203:
Step S201, adjusts the rotating speed of air-conditioner outdoor unit motor to the first rotating speed；
Step S202, adjusts the rotating speed of air-conditioner outdoor unit motor to the second rotating speed；
Step S203, adjusts the rotating speed of air-conditioner outdoor unit motor to the 3rd rotating speed.
In the present embodiment, getting described initial gas pressure difference DELTA PBeginAfterwards, first by described initial gas pressure
Difference DELTA PBeginCarry out size with the first preset pressure difference DELTA P1 and the second preset pressure difference DELTA P2 to compare,
The control system of this air-conditioner further according to comparative result by the adjustment of rotational speed of air-conditioner outdoor unit motor to compare
The rotating speed that result is corresponding.In the present embodiment, due to as Δ PBeginTime between 1MPa to 1.5MPa, should
Air conditioning system has good refrigeration stability and higher efficiency at low ambient temperatures, therefore, first is pre-
If air pressure difference DELTA P1 is typically set at 1MPa, the second preset pressure difference DELTA P2 is typically set at
1.5MPa；Certainly, in other embodiments of the invention, the first preset pressure difference DELTA P1 and second pre-
If air pressure difference DELTA P2 all can be normally set up being worth in correspondence and the most slightly float.Specifically, as Δ PBegin≤
During 1MPa, the rotating speed body of the motor of air-conditioner outdoor unit is adjusted to the first rotating speed by the control system of this air-conditioner
Run；And as 1MPa ＜ Δ PBeginDuring≤1.5MPa, the control system of this air-conditioner is by air-conditioner outdoor unit
The rotating speed body of motor adjusts to the second rotating speed operation；As Δ PBeginDuring ＞ 1.5MPa, the control system of this air-conditioner
The rotating speed body of the motor of air-conditioner outdoor unit is adjusted to the 3rd rotating speed operation by system.In the present embodiment, it is preferable that
First rotating speed is less than the second rotating speed, and the second rotating speed is less than the 3rd rotating speed, specifically, the size of the first rotating speed
Between 0rpm to 450rpm, the size of the second rotating speed between 450rpm to 750rpm, the 3rd turn
The size of speed is between 750rpm to 1000rpm.
It practice, the rotating speed of the motor of air-conditioner outdoor unit is the fastest, the condensation effect of condenser in air-conditioner outdoor unit
Rate is the highest.In the present embodiment, as 1MPa ＜ Δ PBeginDuring≤1.5MPa, the control system of this air-conditioner
The rotating speed body of the motor of air-conditioner outdoor unit is adjusted to the second rotating speed operation, so that the Δ P of this air conditioning systemBegin
Stable between 1MPa to 1.5MPa, thus it is good to ensure that this air conditioning system has at low ambient temperatures
Refrigeration stability and higher efficiency；And as Δ PBeginDuring≤1MPa, by the motor of air-conditioner outdoor unit
Rotating speed body adjusts and runs to the first rotating speed, and the first rotating speed is less than the second rotating speed, now air-conditioner outdoor unit condensation
The condensation efficiency of device obtains a certain degree of reduction, can play the aerofluxus air pressure P increasing this air conditioning systemHighWith
Reduce the return-air air pressure P of this air conditioning systemLowEffect so that Δ PBeginIncreased, to promote this sky
Adjusting system has good refrigeration stability and higher efficiency at low ambient temperatures；And as Δ PBegin＞
During 1.5MPa, being adjusted by the rotating speed body of the motor of air-conditioner outdoor unit and run to the 3rd rotating speed, the 3rd rotating speed is big
In the second rotating speed, now the condensation efficiency of condenser for outdoor unit of air conditioner obtains a certain degree of increase, can rise
To the aerofluxus air pressure P reducing this air conditioning systemHighWith the return-air air pressure P increasing this air conditioning systemLowEffect,
So that Δ PBeginBe reduced, to promote this air conditioning system, to have good refrigeration at low ambient temperatures steady
Qualitative and higher efficiency.
Flow process with reference to another embodiment of control method that Fig. 2, Fig. 2 are air-conditioner outdoor unit motor of the present invention is shown
It is intended to.
On the basis of previous embodiment, further, the control method of this air-conditioner outdoor unit motor is in step
Also include after rapid S20:
Step S301, every prefixed time interval, obtains aerofluxus air pressure and compressor in compressor exhaust pipe
Air pressure difference between muffler inner return-air air pressure is as current gas pressure difference；
And when described current gas pressure difference is less than or equal to the first preset pressure difference DELTA P1, perform step
S302；When described current gas pressure difference is more than the first preset pressure difference DELTA P1 and less than or equal to second pre-
If during air pressure difference DELTA P2, perform step S303；When described current gas pressure difference is more than the second preset pressure
During difference DELTA P2, execution step S304:
Step S302, runs after the current rotating speed of air-conditioner outdoor unit motor reduces the first speed variable；
Step S302, air-conditioner outdoor unit motor runs with current rotating speed；
Step S302, runs after the current rotating speed of air-conditioner outdoor unit motor increases the second speed variable.
In the present embodiment, according to described initial gas pressure difference DELTA PBeginSize, adjust outdoor machine of air-conditioner
After the most corresponding rotating speed of the rotating speed of machine, the control system of this air-conditioner will obtain one every prefixed time interval
Air pressure difference DELTA P between aerofluxus air pressure and compressor return air pipe inner return-air air pressure in second compression machine exhaustor,
And air pressure difference DELTA P obtained every prefixed time interval is designated current gas pressure difference DELTA PCurrently；This reality
Executing in example, this prefixed time interval could be arranged to any one time value in 5 seconds to 15 seconds, generally
Ground, prefixed time interval is set to 10 seconds, with once adjustment of rotational speed to air-conditioner outdoor unit motor before ensureing
The impact of stability of freezing this air conditioning system at low ambient temperatures is embodied；Then, this air-conditioner
Control system is by according to the Δ P obtained each timeCurrentlyPreset with the first preset pressure difference DELTA P1 and second
Size comparative result between air pressure difference DELTA P2, adjust air-conditioner outdoor unit motor further works as forward
Speed, specifically, as Δ PCurrentlyDuring≤1MPa, the motor controlling this air-conditioner outdoor unit is being worked as by control system
Run after reducing the first speed variable on the basis of front rotating speed；And as 1MPa ＜ Δ PCurrentlyDuring≤1.5MPa,
The motor controlling this air-conditioner outdoor unit is kept stable operation with current rotating speed by control system；And as Δ PCurrently
During ＞ 1.5MPa, the motor controlling this air-conditioner outdoor unit is increased on the basis of current rotating speed by control system
Run after second speed variable.In the present embodiment, the size of the first speed variable is at 30rpm to 80rpm
Between, the size of the second speed variable is between 30rpm to 80rpm, normally, and the first speed variable
It is disposed as 50rpm with the second speed variable.
In the present embodiment, by obtaining a Δ P every prefixed time intervalCurrently, and by according to each time
The Δ P obtainedCurrentlyAnd big between the first preset pressure difference DELTA P1 and the second preset pressure difference DELTA P2
Little comparative result adjusts the current rotating speed of air-conditioner outdoor unit motor further, so that this air conditioning system is cold
It is pre-to second that the solidifying pressure reduction formed between pressure and evaporating pressure is maintained at the first preset pressure difference DELTA P1
If between air pressure difference DELTA P2 so that the refrigeration that this air conditioning system is at low ambient temperatures have good stability with
And efficiency is higher.Specifically, when finding Δ P after prefixed time interval each timeCurrentlyDuring≤1MPa, by sky
The current rotating speed adjusting off-premises station motor runs after reducing the first speed variable, reduces air-conditioner outdoor unit each time
The current rotating speed of motor can increase the aerofluxus air pressure P of this air conditioning system to a certain extentHighWith this air-conditioning of reduction
The return-air air pressure P of systemLow, the current rotating speed reducing air-conditioner outdoor unit motor the most each time can be to a certain degree
Upper increase Δ PCurrently, until 1MPa ＜ Δ PCurrently≤1.5MPa；And when sending out after prefixed time interval each time
Existing Δ PCurrentlyDuring ＞ 1.5MPa, transport after the current rotating speed of air-conditioner outdoor unit motor is increased the second speed variable
OK, the current rotating speed increasing air-conditioner outdoor unit motor each time can reduce this air conditioning system to a certain extent
Aerofluxus air pressure PHighWith the return-air air pressure P increasing this air conditioning systemLow, increase air-conditioner outdoor unit the most each time
Low delta p can drop in the current rotating speed of motor to a certain extentCurrently, until 1MPa ＜ Δ PCurrently≤1.5MPa。
It should be noted that when the current rotating speed of air-conditioner outdoor unit motor is reduced to its minimum predetermined rotating speed, if
Air pressure difference DELTA P between aerofluxus air pressure and compressor return air pipe inner return-air air pressure in compressor exhaust pipeCurrently
Still less than or equal to the first preset pressure difference DELTA P1 (usually 1MPa), then control system will control
The motor making this air-conditioner outdoor unit keeps stable operation with its minimum predetermined rotating speed；And air-conditioner outdoor unit motor
Current rotating speed when increasing to its highest preset rotation speed, if aerofluxus air pressure and compressor in compressor exhaust pipe
Air pressure difference DELTA P between muffler inner return-air air pressureCurrently(logical still above the second preset pressure difference DELTA P2
It is often 1.5MPa), then the motor controlling this air-conditioner outdoor unit is kept by control system with its highest preset rotation speed
Stable operation.
The present invention further provides a kind of air-conditioner, this air-conditioner includes air-conditioner outdoor unit.
With reference to the high-level schematic functional block diagram that Fig. 3, Fig. 3 are air-conditioner one embodiment of the present invention.
In one embodiment, this air-conditioner includes:
Acquisition module 10, in cooling mode, when the ambient temperature residing for air-conditioner outdoor unit is less than pre-
If during temperature, in acquisition compressor exhaust pipe between aerofluxus air pressure and compressor return air pipe inner return-air air pressure
Air pressure difference is as initial gas pressure difference；
First control module 20, for the size according to described initial gas pressure difference, adjusts air-conditioner outdoor unit
The rotating speed of motor is to corresponding rotating speed.
In the present embodiment, air-conditioner outdoor unit is provided with one for the temperature sensor of monitoring of environmental temperature.When
To ambient temperature, less than preset temperature, (preset temperature could be arranged to 15 DEG C to 22 DEG C to temperature sensor monitors
In any one temperature value, normally, preset temperature is set to 17 DEG C) time, can determine that this air-conditioner enters
Enter the operating mode freezed at low ambient temperatures.When this air-conditioner enters the operating mode freezed at low ambient temperatures,
Acquisition module 10 obtains in compressor exhaust pipe between aerofluxus air pressure and compressor return air pipe inner return-air air pressure
Air pressure difference is as initial gas pressure difference.In the present embodiment, specifically, this air-conditioner is the row of compressor
Trachea is provided with the high-pressure pressure sensor for measuring aerofluxus air pressure, and sets on the muffler of compressor
There is the low-pressure sensor for measuring return-air air pressure；Acquisition module 10 includes receiving unit 11 and meter
Calculate unit 12 (with reference to Fig. 4), wherein, receive unit 11 and be used for receiving measured by high-pressure pressure sensor
The aerofluxus air pressure P arrivedHighWith the return-air air pressure P measured by low-pressure sensorLow, computing unit 12 is then
Air pressure difference DELTA P between the two is obtained, i.e. for aerofluxus atmospheric pressure value is deducted return-air atmospheric pressure value
Δ P=PHigh-PLow, and air pressure difference DELTA P obtained by now is designated initial gas pressure difference DELTA PBegin。
In the present embodiment, get described initial gas pressure difference DELTA P at acquisition module 10BeginAfterwards, the first control
Molding block 20 is according to described initial gas pressure difference DELTA PBeginSize, by the adjustment of rotational speed of air-conditioner outdoor unit motor
The condensation efficiency of the condenser of air-conditioner outdoor unit is changed, to adjust this air conditioning system to corresponding rotating speed
Condensing pressure and evaporating pressure and making is formed normal between the condensing pressure of this air conditioning system and evaporating pressure
Pressure reduction, thus promote this air conditioning system refrigeration stability at low ambient temperatures and efficiency.
With reference to Fig. 5, in the present embodiment, further, the first control module 20 includes:
First control unit 21, for poor less than or equal to the first preset pressure in described initial gas pressure difference
During value, adjust the rotating speed of air-conditioner outdoor unit motor to the first rotating speed；
Second control unit 22, in described initial gas pressure difference more than the first preset pressure difference and little
In or equal to the second preset pressure difference time, adjust air-conditioner outdoor unit motor rotating speed to the second rotating speed；
3rd control unit 23, is used for when described initial gas pressure difference is more than the second preset pressure difference,
Adjust the rotating speed of air-conditioner outdoor unit motor to the 3rd rotating speed.
In the present embodiment, acquisition module 10 is getting described initial gas pressure difference DELTA PBeginAfterwards, by described
Initial gas pressure difference DELTA PBeginSend to the first control module 20, for the first control module 20 by the beginning of described
Beginning air pressure difference DELTA PBeginCarry out greatly with the first preset pressure difference DELTA P1 and the second preset pressure difference DELTA P2
Little comparison, then this first control module 20 according to comparative result by the adjustment of rotational speed of air-conditioner outdoor unit motor
To the rotating speed corresponding with comparative result.In the present embodiment, due to as Δ PBeginAt 1MPa to 1.5MPa
Between time, this air conditioning system has good refrigeration stability and higher efficiency at low ambient temperatures,
Therefore, the first preset pressure difference DELTA P1 is typically set at 1MPa, and the second preset pressure difference DELTA P2 is usual
It is set as 1.5MPa；Certainly, in other embodiments of the invention, the first preset pressure difference DELTA P1 and
Second preset pressure difference DELTA P2 all can be normally set up being worth in correspondence and the most slightly float.In the present embodiment,
Specifically, as Δ PBeginDuring≤1MPa, the first control unit 21 is by the rotating speed body of the motor of air-conditioner outdoor unit
Adjust to the first rotating speed operation；And as 1MPa ＜ Δ PBeginDuring≤1.5MPa, the second control unit 22 is by sky
The rotating speed body adjusting the motor of off-premises station adjusts to the second rotating speed operation；As Δ PBeginDuring ＞ 1.5MPa, the 3rd control
The rotating speed body of the motor of air-conditioner outdoor unit is adjusted to the 3rd rotating speed operation by unit 23 processed.In the present embodiment,
Preferably, the first rotating speed is less than the second rotating speed, and the second rotating speed is less than the 3rd rotating speed, specifically, first turn
Speed size between 0rpm to 450rpm, the size of the second rotating speed between 450rpm to 750rpm,
The size of the 3rd rotating speed is between 750rpm to 1000rpm.
It practice, the rotating speed of the motor of air-conditioner outdoor unit is the fastest, the condensation effect of condenser in air-conditioner outdoor unit
Rate is the highest.In the present embodiment, as 1MPa ＜ Δ PBeginDuring≤1.5MPa, the second control unit 22 is by sky
The rotating speed body adjusting the motor of off-premises station adjusts to the second rotating speed operation, so that the Δ P of this air conditioning system stablizes
Between 1MPa to 1.5MPa, thus it is steady to ensure that this air conditioning system has good refrigeration at low ambient temperatures
Qualitative and higher efficiency；And as Δ PBeginDuring≤1MPa, the first control unit 21 is by air-conditioner outdoor unit
The rotating speed body of motor adjust and run to the first rotating speed, the first rotating speed is less than the second rotating speed, now air conditioning chamber
The condensation efficiency of outer machine condenser obtains a certain degree of reduction, can play the aerofluxus increasing this air conditioning system
Air pressure PHighWith the return-air air pressure P reducing this air conditioning systemLowEffect so that Δ PBeginIncreased,
There is good refrigeration stability and higher efficiency at low ambient temperatures promoting this air conditioning system；And
As Δ PBeginDuring ＞ 1.5MPa, the 3rd control unit 23 the rotating speed body of the motor of air-conditioner outdoor unit is adjusted to
3rd rotating speed runs, and the 3rd rotating speed is more than the second rotating speed, the now condensation efficiency of condenser for outdoor unit of air conditioner
Obtain a certain degree of increase, the aerofluxus air pressure P reducing this air conditioning system can be playedHighWith this air-conditioning system of increase
The return-air air pressure P of systemLowEffect so that Δ PBeginBe reduced, to promote this air conditioning system at low temperature
There is under environment good refrigeration stability and higher efficiency.
With reference to the function mould controlling another embodiment of device that Fig. 6, Fig. 6 are air-conditioner outdoor unit motor of the present invention
Block schematic diagram.
On the basis of previous embodiment, further, acquisition module 10, it is additionally operable to by outside air conditioning chamber
After the most corresponding rotating speed of adjustment of rotational speed of dynamo-electric machine, every prefixed time interval, obtain compressor exhaust pipe
Air pressure difference between interior aerofluxus air pressure and compressor return air pipe inner return-air air pressure is as current gas pressure difference；
The control device of this air-conditioner outdoor unit motor also includes:
Second control module 30, for poor less than or equal to the first preset pressure in described current gas pressure difference
During value, run after the current rotating speed of air-conditioner outdoor unit motor is reduced the first speed variable；And in institute
State current gas pressure difference more than the first preset pressure difference and less than or equal to the second preset pressure difference time,
Control air-conditioner outdoor unit motor to run with current rotating speed；And in described current gas pressure difference more than the
During two preset pressure differences, run after the current rotating speed of air-conditioner outdoor unit motor is increased the second speed variable.
In the present embodiment, in the first control module 10 according to described initial gas pressure difference DELTA PBeginSize, adjust
After the most corresponding rotating speed of the rotating speed of whole air-conditioner outdoor unit motor, acquisition module 10 is also every prefixed time interval
Obtain the draught head between aerofluxus air pressure and compressor return air pipe inner return-air air pressure in first compression machine exhaustor
Value Δ P, and the Δ P obtained every prefixed time interval is designated current gas pressure difference DELTA PCurrently；This reality
Executing in example, this prefixed time interval could be arranged to any one time value in 5 seconds to 15 seconds, generally
Ground, prefixed time interval is set to 10 seconds, with once adjustment of rotational speed to air-conditioner outdoor unit motor before ensureing
The impact of stability of freezing this air conditioning system at low ambient temperatures is embodied；Then, second controls mould
Block 30 is by according to the Δ P obtained each timeCurrentlyWith the first preset pressure difference DELTA P1 and the second preset pressure
Size comparative result between difference DELTA P2, adjusts the current rotating speed of air-conditioner outdoor unit motor further,
Specifically, as Δ PCurrentlyDuring≤1MPa, the second control module 30 will control the motor of this air-conditioner outdoor unit
Run after reducing the first speed variable on the basis of current rotating speed；And as 1MPa ＜ Δ PCurrently≤1.5MPa
Time, the motor controlling this air-conditioner outdoor unit is kept stable operation with current rotating speed by the second control module 30；
And as Δ PCurrentlyDuring ＞ 1.5MPa, the second control module 30 will control the motor of this air-conditioner outdoor unit currently
Run after increasing by the second speed variable on the basis of rotating speed.In the present embodiment, the size of the first speed variable
Between 30rpm to 80rpm, the size of the second speed variable is between 30rpm to 80rpm, generally
Ground, the first speed variable and the second speed variable are disposed as 50rpm.
In the present embodiment, obtain a Δ P by acquisition module 10 every prefixed time intervalCurrently, and lead to
Cross the second control module 30 according to the Δ P obtained each timeCurrentlyWith the first preset pressure difference DELTA P1 and
Size comparative result between two preset pressure difference DELTA P2 adjusts working as of air-conditioner outdoor unit motor further
Front rotating speed, so that the pressure reduction formed between the condensing pressure of this air conditioning system and evaporating pressure is maintained at
Between one preset pressure difference DELTA P1 to the second preset pressure difference DELTA P2, so that this air conditioning system is low
Refrigeration under temperature environment has good stability and efficiency is higher.Specifically, when prefixed time interval each time
Rear discovery Δ PCurrentlyDuring≤1MPa, the current rotating speed of air-conditioner outdoor unit motor is dropped by the second control module 30
Running after low first speed variable, the current rotating speed reducing air-conditioner outdoor unit motor each time can necessarily journey
The aerofluxus air pressure P of this air conditioning system is increased on degreeHighWith the return-air air pressure P reducing this air conditioning systemLow, the most often
The current rotating speed once reducing air-conditioner outdoor unit motor can increase Δ P to a certain extentCurrently, until 1MPa
＜ Δ PCurrently≤1.5MPa；And when finding Δ P after prefixed time interval each timeCurrentlyDuring ＞ 1.5MPa, the
Two control modules 30 are run after the current rotating speed of air-conditioner outdoor unit motor increases the second speed variable, each
The current rotating speed of secondary increase air-conditioner outdoor unit motor can reduce the aerofluxus gas of this air conditioning system to a certain extent
Pressure PHighWith the return-air air pressure P increasing this air conditioning systemLow, increase working as of air-conditioner outdoor unit motor the most each time
Low delta p can drop in front rotating speed to a certain extentCurrently, until 1MPa ＜ Δ PCurrently≤1.5MPa.Should be noted that
, when the current rotating speed of air-conditioner outdoor unit motor is reduced to its minimum predetermined rotating speed, if compressor row
Air pressure difference DELTA P between tracheal strips aerofluxus air pressure and compressor return air pipe inner return-air air pressureCurrentlyStill less than
Or equal to the first preset pressure difference DELTA P1 (usually 1MPa), then the second control module 30 will control
The motor of this air-conditioner outdoor unit keeps stable operation with its minimum predetermined rotating speed；And air-conditioner outdoor unit motor
When current rotating speed increases to its highest preset rotation speed, if aerofluxus air pressure returns with compressor in compressor exhaust pipe
Air pressure difference DELTA P between tracheal strips return-air air pressureCurrentlyStill above the second preset pressure difference DELTA P2 (generally
For 1.5MPa), then the motor controlling this air-conditioner outdoor unit is turned by the second control module 30 with its highest presetting
Speed keeps stable operation.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or
Connect and be used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. the control method of an air-conditioner outdoor unit motor, it is characterised in that described air-conditioner outdoor unit motor
Control method comprise the following steps:
In cooling mode, when the ambient temperature residing for air-conditioner outdoor unit is less than preset temperature, pressure is obtained
In contracting machine exhaustor, the air pressure difference between aerofluxus air pressure and compressor return air pipe inner return-air air pressure is as initially
Air pressure difference；
According to the size of described initial gas pressure difference, adjust the rotating speed of air-conditioner outdoor unit motor to corresponding rotating speed.
2. the control method of air-conditioner outdoor unit motor as claimed in claim 1, it is characterised in that described
According to the size of described initial gas pressure difference, adjust the rotating speed step to corresponding rotating speed of air-conditioner outdoor unit motor
Suddenly include:
When described initial gas pressure difference is less than or equal to the first preset pressure difference, adjust air-conditioner outdoor unit
The rotating speed of motor is to the first rotating speed；
When described initial gas pressure difference is more than the first preset pressure difference and less than or equal to the second preset pressure
During difference, adjust the rotating speed of air-conditioner outdoor unit motor to the second rotating speed；
When described initial gas pressure difference is more than the second preset pressure difference, adjust air-conditioner outdoor unit motor
Rotating speed is to the 3rd rotating speed.
3. the control method of air-conditioner outdoor unit motor as claimed in claim 2, it is characterised in that described
First rotating speed is less than described second rotating speed, and described second rotating speed is less than described 3rd rotating speed.
4. the control method of air-conditioner outdoor unit motor as claimed in claim 3, it is characterised in that described
First rotating speed between 0rpm to 450rpm, described second rotating speed between 450rpm to 750rpm,
Described 3rd rotating speed is between 750rpm to 1000rpm.
5. the control method of air-conditioner outdoor unit motor as claimed in claim 3, it is characterised in that described
According to the size of described initial gas pressure difference, adjust the rotating speed step to corresponding rotating speed of air-conditioner outdoor unit motor
After Zhou, also include:
Every prefixed time interval, in obtaining compressor exhaust pipe, aerofluxus air pressure returns in compressor return air pipe
Air pressure difference between gas air pressure is as current gas pressure difference；
When described current gas pressure difference is less than or equal to the first preset pressure difference, by outdoor machine of air-conditioner
The current rotating speed of machine runs after reducing the first speed variable；
When described current gas pressure difference is more than the first preset pressure difference and less than or equal to the second preset pressure
During difference, air-conditioner outdoor unit motor runs with current rotating speed；
When described current gas pressure difference is more than the second preset pressure difference, working as air-conditioner outdoor unit motor
Front rotating speed runs after increasing by the second speed variable.
6. an air-conditioner, it is characterised in that described air-conditioner includes:
Acquisition module, in cooling mode, when the ambient temperature residing for air-conditioner outdoor unit is less than presetting
During temperature, obtain the gas between aerofluxus air pressure and compressor return air pipe inner return-air air pressure in compressor exhaust pipe
Pressure difference is as initial gas pressure difference；
First control module, for the size according to described initial gas pressure difference, adjusts outdoor machine of air-conditioner
The rotating speed of machine is to corresponding rotating speed.
7. air-conditioner as claimed in claim 6, it is characterised in that described first control module includes:
First control unit, for being less than or equal to the first preset pressure difference in described initial gas pressure difference
Time, adjust the rotating speed of air-conditioner outdoor unit motor to the first rotating speed；
Second control unit, for and being less than more than the first preset pressure difference in described initial gas pressure difference
Or during equal to the second preset pressure difference, adjust the rotating speed of air-conditioner outdoor unit motor to the second rotating speed；
3rd control unit, for when described initial gas pressure difference is more than the second preset pressure difference, adjusting
The rotating speed of whole air-conditioner outdoor unit motor is to the 3rd rotating speed.
8. air-conditioner as claimed in claim 7, it is characterised in that described first rotating speed is less than described the
Two rotating speeds, described second rotating speed is less than described 3rd rotating speed.
9. air-conditioner as claimed in claim 8, it is characterised in that described first rotating speed is at 0rpm extremely
Between 450rpm, described second rotating speed is between 450rpm to 750rpm, and described 3rd rotating speed is at 750rpm
Between 1000rpm.
10. air-conditioner as claimed in claim 8, it is characterised in that
Described acquisition module is additionally operable to after by the adjustment of rotational speed of air-conditioner outdoor unit motor to corresponding rotating speed,
Every prefixed time interval, obtain aerofluxus air pressure and compressor return air pipe inner return-air gas in compressor exhaust pipe
Air pressure difference between pressure is as current gas pressure difference；
The control device of described air-conditioner outdoor unit motor also includes:
Second control module, for being less than or equal to the first preset pressure difference in described current gas pressure difference
Time, run after the current rotating speed of air-conditioner outdoor unit motor is reduced the first speed variable；And for described
When current gas pressure difference is more than the first preset pressure difference and less than or equal to the second preset pressure difference, control
Air-conditioner outdoor unit motor processed runs with current rotating speed；And for being more than second in described current gas pressure difference
During preset pressure difference, run after the current rotating speed of air-conditioner outdoor unit motor is increased the second speed variable.
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| CN201510283017.7A CN106288130B (en) | 2015-05-28 | 2015-05-28 | The control method and air conditioner of air-conditioner outdoor unit motor |
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| CN201510283017.7A CN106288130B (en) | 2015-05-28 | 2015-05-28 | The control method and air conditioner of air-conditioner outdoor unit motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006890A (en) * | 2017-11-03 | 2018-05-08 | 特灵空调***(中国)有限公司 | Air-conditioning heat dissipation control method, air-conditioning heat dissipation control device and air-conditioning |
| CN111895627A (en) * | 2020-07-14 | 2020-11-06 | Tcl空调器(中山)有限公司 | Air conditioner outdoor fan rotating speed control method, air conditioner and storage medium |
| CN112665161A (en) * | 2020-12-08 | 2021-04-16 | 珠海格力电器股份有限公司 | Screw unit control method and device and air conditioning unit |
| CN114234406A (en) * | 2021-12-22 | 2022-03-25 | 四川长虹空调有限公司 | Air conditioner refrigeration control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002039598A (en) * | 2000-07-26 | 2002-02-06 | Daikin Ind Ltd | Air conditioner |
| CN1643306A (en) * | 2002-03-29 | 2005-07-20 | 大金工业株式会社 | Air conditioner |
| JP2013083425A (en) * | 2011-09-30 | 2013-05-09 | Fujitsu General Ltd | Air conditioner |
| CN103759345A (en) * | 2014-02-21 | 2014-04-30 | 广东志高暖通设备股份有限公司 | Draught fan control method |
| CN103982990A (en) * | 2014-06-04 | 2014-08-13 | 深圳麦克维尔空调有限公司 | Method for controlling draught fan in air conditioner outdoor unit and air conditioning system |
-
2015
- 2015-05-28 CN CN201510283017.7A patent/CN106288130B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002039598A (en) * | 2000-07-26 | 2002-02-06 | Daikin Ind Ltd | Air conditioner |
| CN1643306A (en) * | 2002-03-29 | 2005-07-20 | 大金工业株式会社 | Air conditioner |
| JP2013083425A (en) * | 2011-09-30 | 2013-05-09 | Fujitsu General Ltd | Air conditioner |
| CN103759345A (en) * | 2014-02-21 | 2014-04-30 | 广东志高暖通设备股份有限公司 | Draught fan control method |
| CN103982990A (en) * | 2014-06-04 | 2014-08-13 | 深圳麦克维尔空调有限公司 | Method for controlling draught fan in air conditioner outdoor unit and air conditioning system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006890A (en) * | 2017-11-03 | 2018-05-08 | 特灵空调***(中国)有限公司 | Air-conditioning heat dissipation control method, air-conditioning heat dissipation control device and air-conditioning |
| CN111895627A (en) * | 2020-07-14 | 2020-11-06 | Tcl空调器(中山)有限公司 | Air conditioner outdoor fan rotating speed control method, air conditioner and storage medium |
| CN112665161A (en) * | 2020-12-08 | 2021-04-16 | 珠海格力电器股份有限公司 | Screw unit control method and device and air conditioning unit |
| CN114234406A (en) * | 2021-12-22 | 2022-03-25 | 四川长虹空调有限公司 | Air conditioner refrigeration control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106288130B (en) | 2019-04-23 |
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