CN106247676A - The control method of air-conditioner, control device and air-conditioner - Google Patents
The control method of air-conditioner, control device and air-conditioner Download PDFInfo
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- CN106247676A CN106247676A CN201610677343.0A CN201610677343A CN106247676A CN 106247676 A CN106247676 A CN 106247676A CN 201610677343 A CN201610677343 A CN 201610677343A CN 106247676 A CN106247676 A CN 106247676A
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- air
- conditioner
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- force value
- length
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides the control method of a kind of air-conditioner, control device and air-conditioner, wherein, the control method of air-conditioner includes: the length of the refrigerant pipeline between off-premises station and the indoor set of detection air-conditioner；According to the length of described refrigerant pipeline, determining the Starting mode of compressor when described air conditioner heat-production runs, wherein, described Starting mode includes described compressor the advancing the speed and/or the maximum running frequency of described compressor of running frequency in start-up course；When receiving the instruction of heating operation, based on a determination that described Starting mode, control described compressor start.Technical scheme can be when air conditioner heat-production runs, length according to the refrigerant pipeline between indoor and outdoor machine, adjust the advancing the speed and/or the maximum running frequency of compressor of compressor operating frequency, it is ensured that users'comfort when startup reliability when refrigerant pipeline is longer and refrigerant pipeline are shorter.
Description
Technical field
The present invention relates to air-conditioner technical field, in particular to control method, a kind of air-conditioner of a kind of air-conditioner
Control device and a kind of air-conditioner.
Background technology
Air conditioning system (especially multi-online air-conditioning system) is when mounted owing to being affected by actual installation condition, in it
The piping length of outer machine also and differs.
When air conditioning system heating operation at low ambient temperatures, it is hot that user typically requires that air conditioning system can have speed,
This is accomplished by compressor can be rapidly achieved the running frequency that comparison is high.But, air conditioning system at low ambient temperatures time, compressor
In lubricating oil and coolant merges into each other and also in low temperature state, too fast rising running frequency and use too high frequency to transport
Provisional capital can cause compressor quickly to spray lubricating oil, and during internal-external machine piping length difference, the oil return speed of whole system exists
The biggest difference.Visible, for different internal-external machine piping lengths, it may be necessary to use different Starting mode to control compression
Machine, but the most relevant solution.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art or correlation technique.
To this end, it is an object of the present invention to propose the control method of a kind of new air-conditioner, can be at air-conditioner
During heating operation, according to the length of the refrigerant pipeline between indoor and outdoor machine, adjust compressor operating frequency advance the speed and/or
The maximum running frequency of compressor, it is ensured that user when startup reliability when refrigerant pipeline is longer and refrigerant pipeline are shorter is comfortable
Degree.
Further object is that correspondence proposes the control device of a kind of air-conditioner and has this control device
Air-conditioner.
For achieving the above object, embodiment according to the first aspect of the invention, it is proposed that the controlling party of a kind of air-conditioner
Method, including: the length of the refrigerant pipeline between off-premises station and the indoor set of detection air-conditioner；Length according to described refrigerant pipeline
Degree, determines the Starting mode of compressor when described air conditioner heat-production runs, and wherein, described Starting mode includes that described compressor exists
In start-up course, running frequency advances the speed and/or the maximum running frequency of described compressor；When receiving heating operation
During instruction, based on a determination that described Starting mode, control described compressor start.
The control method of air-conditioner according to an embodiment of the invention, by detection air-conditioner indoor and outdoor machine between cold
The length of matchmaker's pipeline, and determine air-conditioner Starting mode of compressor when heating operation according to the length of refrigerant pipeline, make
Obtain refrigerant pipeline between indoor and outdoor machine longer time, compressor can be controlled in start-up course, slowly promote running frequency
And/or use less maximum running frequency, it is to avoid too fast rising running frequency and use the too high frequency to run to cause
Compressor quickly sprays lubricating oil, and lubricating oil needs to return compressor through the long period (owing to refrigerant pipeline is longer) and causes
Compressor oil starvation damages, and improves the reliability of compressor and the stability of system.And the refrigerant pipeline between indoor and outdoor machine
Time shorter, compressor fast lifting running frequency and/or use bigger maximum running frequency in start-up course can be controlled,
Meet the demand that user quickly heats.
The control method of air-conditioner according to the abovementioned embodiments of the present invention, it is also possible to there is techniques below feature:
According to one embodiment of present invention, refrigerant pipeline between off-premises station and the indoor set of described detection air-conditioner
The step of length, specifically includes: when described air-conditioner refrigerating operaton, detects the running frequency of described compressor, described outdoor
Force value in the low pressure line of machine and the saturation pressure force value in indoor heat exchanger；Running frequency according to described compressor, institute
State the force value in low pressure line and described saturation pressure force value, determine the length of described refrigerant pipeline.
In this embodiment, when air-conditioner refrigerating operaton, the coolant of High Temperature High Pressure, after compressor is discharged, passes through four-way
Reversal valve enters outdoor heat exchanger, flows into indoor set afterwards, then flows out from indoor set and return compression through four-way change-over valve
Machine (before returning compressor, can pass through gas-liquid separator), now, the low pressure line of off-premises station is coolant from indoor heat exchange
Device flows out to the position in the pipeline of four-way change-over valve near four-way change-over valve.
In the above-described embodiments, further, detect the step of saturation pressure force value in described indoor heat exchanger, specifically wrap
Include: detect the temperature of described indoor heat exchanger, according to the temperature of described indoor heat exchanger, determine satisfying in described indoor heat exchanger
And force value.
In this embodiment, the coolant in indoor heat exchanger is gas-liquid mixed state, before its temperature value and saturation pressure force value
There is certain corresponding relation, therefore can determine the saturation pressure in indoor heat exchanger by the temperature of detection indoor heat exchanger
Force value, compared to the direct scheme being carried out by pressure transducer and detecting, the detection scheme of this embodiment is simpler, convenient.
According to one embodiment of present invention, according to the pressure in the running frequency of described compressor, described low pressure line
Value and described saturation pressure force value, determine the step of the length of described refrigerant pipeline, specifically include: according to the operation of described compressor
Force value in frequency, described low pressure line and described saturation pressure force value, by the computing formula of refrigerant pipeline, calculate described cold
The length of matchmaker's pipeline；Or
According to the difference between the described saturation pressure force value prestored and the force value in described low pressure line different
Corresponding relation in the case of running frequency and length of pipe, determines the length of described refrigerant pipeline.
According to one embodiment of present invention, the length of described refrigerant pipeline advances the speed into inverse correlation relation with described,
And/or the described length of refrigerant pipeline becomes inverse correlation relation with the maximum running frequency of described compressor.
In this embodiment, when refrigerant pipeline is longer, in order to avoid the running frequency of too fast liter of high compressor and make
Running by too high frequency causes compressor quickly to spray lubricating oil, and lubricating oil needs through the long period (due to refrigerant pipe
Road is longer) return the problem that compressor causes compressor oil starvation to damage, can slowly promote the running frequency of compressor and/or adopt
With less maximum running frequency；When refrigerant pipeline is shorter, in order to meet the demand that user quickly heats, improve making of user
By comfort level, compressor fast lifting running frequency and/or use the highest bigger operation frequency in start-up course can be controlled
Rate.
Embodiment according to a second aspect of the present invention, it is also proposed that the control device of a kind of air-conditioner, including: detection is single
Unit, for detecting the length of the refrigerant pipeline between the off-premises station of air-conditioner and indoor set；First determines unit, for according to institute
State the length of refrigerant pipeline, determine the Starting mode of compressor when described air conditioner heat-production runs, wherein, described Starting mode bag
Include described compressor the advancing the speed and/or the maximum running frequency of described compressor of running frequency in start-up course；Control
Unit, for when the instruction receiving heating operation, determines, based on described first, the described Starting mode that unit determines, controls
Described compressor start.
The control device of air-conditioner according to an embodiment of the invention, by detection air-conditioner indoor and outdoor machine between cold
The length of matchmaker's pipeline, and determine air-conditioner Starting mode of compressor when heating operation according to the length of refrigerant pipeline, make
Obtain refrigerant pipeline between indoor and outdoor machine longer time, compressor can be controlled in start-up course, slowly promote running frequency
And/or use less maximum running frequency, it is to avoid too fast rising running frequency and use the too high frequency to run to cause
Compressor quickly sprays lubricating oil, and lubricating oil needs to return compressor through the long period (owing to refrigerant pipeline is longer) and causes
Compressor oil starvation damages, and improves the reliability of compressor and the stability of system.And the refrigerant pipeline between indoor and outdoor machine
Time shorter, compressor fast lifting running frequency and/or use bigger maximum running frequency in start-up course can be controlled,
Meet the demand that user quickly heats.
The control device of air-conditioner according to the abovementioned embodiments of the present invention, it is also possible to there is techniques below feature:
According to one embodiment of present invention, described detector unit includes: performance element, for freezing at described air-conditioner
During operation, detect in the force value in the low pressure line of the running frequency of described compressor, described off-premises station and indoor heat exchanger
Saturation pressure force value；Second determines unit, for according to the force value in the running frequency of described compressor, described low pressure line
With described saturation pressure force value, determine the length of described refrigerant pipeline.
In this embodiment, when air-conditioner refrigerating operaton, the coolant of High Temperature High Pressure, after compressor is discharged, passes through four-way
Reversal valve enters outdoor heat exchanger, flows into indoor set afterwards, then flows out from indoor set and return compression through four-way change-over valve
Machine (before returning compressor, can pass through gas-liquid separator), now, the low pressure line of off-premises station is coolant from indoor heat exchange
Device flows out to the position in the pipeline of four-way change-over valve near four-way change-over valve.
In the above-described embodiments, further, described performance element is specifically additionally operable to: detect the temperature of described indoor heat exchanger
Degree, according to the temperature of described indoor heat exchanger, determines the saturation pressure force value in described indoor heat exchanger.
In this embodiment, the coolant in indoor heat exchanger is gas-liquid mixed state, before its temperature value and saturation pressure force value
There is certain corresponding relation, therefore can determine the saturation pressure in indoor heat exchanger by the temperature of detection indoor heat exchanger
Force value, compared to the direct scheme being carried out by pressure transducer and detecting, the detection scheme of this embodiment is simpler, convenient.
According to one embodiment of present invention, described second determine unit specifically for: according to the operation of described compressor
Force value in frequency, described low pressure line and described saturation pressure force value, by the computing formula of refrigerant pipeline, calculate described cold
The length of matchmaker's pipeline；Or
According to the difference between the described saturation pressure force value prestored and the force value in described low pressure line different
Corresponding relation in the case of running frequency and length of pipe, determines the length of described refrigerant pipeline.
According to one embodiment of present invention, the length of described refrigerant pipeline advances the speed into inverse correlation relation with described,
And/or the described length of refrigerant pipeline becomes inverse correlation relation with the maximum running frequency of described compressor.
In this embodiment, when refrigerant pipeline is longer, in order to avoid the running frequency of too fast liter of high compressor and make
Running by too high frequency causes compressor quickly to spray lubricating oil, and lubricating oil needs through the long period (due to refrigerant pipe
Road is longer) return the problem that compressor causes compressor oil starvation to damage, can slowly promote the running frequency of compressor and/or adopt
With less maximum running frequency；When refrigerant pipeline is shorter, in order to meet the demand that user quickly heats, improve making of user
By comfort level, compressor fast lifting running frequency and/or use the highest bigger operation frequency in start-up course can be controlled
Rate.
Embodiment according to the third aspect of the invention we, it is also proposed that a kind of air-conditioner, including: as above-described embodiment is appointed
The control device of one described air-conditioner.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment and will become
Substantially with easy to understand, wherein:
Fig. 1 shows the schematic flow diagram of the control method of air-conditioner according to an embodiment of the invention；
Fig. 2 shows the refrigerant pipeline detecting between the off-premises station of air-conditioner and indoor set according to an embodiment of the invention
The schematic flow sheet of length；
Fig. 3 shows the structural representation of air-conditioner system according to an embodiment of the invention；
Fig. 4 shows that compressor is in start-up course according to an embodiment of the invention, and running frequency is over time
Curve synoptic diagram；
Fig. 5 shows the schematic block diagram controlling device of air-conditioner according to an embodiment of the invention.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, real with concrete below in conjunction with the accompanying drawings
The present invention is further described in detail by mode of executing.It should be noted that in the case of not conflicting, the enforcement of the application
Feature in example and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but, the present invention also may be used
Implementing to use other to be different from other modes described here, therefore, protection scope of the present invention is not by described below
The restriction of specific embodiment.
Fig. 1 shows the schematic flow diagram of the control method of air-conditioner according to an embodiment of the invention.
As it is shown in figure 1, the control method of air-conditioner according to an embodiment of the invention, including:
Step S10, the length of the refrigerant pipeline between off-premises station and the indoor set of detection air-conditioner.
In one embodiment of the invention, as in figure 2 it is shown, step S10 specifically includes:
Step S101, when described air-conditioner refrigerating operaton, detects the running frequency of described compressor, described off-premises station
Force value in low pressure line and the saturation pressure force value in indoor heat exchanger.
Specifically, in the air-conditioner system shown in Fig. 3, including: compressor 301, four-way change-over valve 302, outdoor heat exchange
Device 303, off-premises station throttle part 304, indoor set throttle part 305, indoor heat exchanger 306, gas-liquid separator 307, and room
Outer blower fan 308 and indoor fan 309.
When air-conditioner refrigerating operaton, the coolant of High Temperature High Pressure is after compressor 301 is discharged, by four-way change-over valve 302
Enter outdoor heat exchanger 303, flow into indoor set afterwards, then flow out from indoor set and divide through four-way change-over valve 302 and gas-liquid
Compressor 301 is returned from device 307.Wherein, the low pressure line of off-premises station is coolant and flows out to four-way from indoor heat exchanger 306 and change
Near the position of four-way change-over valve 302 in the pipeline of valve 302, when specifically detecting, can be detected by pressure transducer 310
The force value of the low pressure line of off-premises station.
In the air-conditioner system shown in Fig. 3, it is respectively provided with throttle part at off-premises station and indoor set, i.e. off-premises station joint
Stream unit 304 and indoor set throttle part 305, this setup is applicable to multi-gang air-conditioner device system, i.e. off-premises station with every
It is both provided with throttle part on refrigerant pipe in individual indoor set.For common domestic air conditioner, off-premises station is with indoor
One throttle part can be only set on the refrigerant pipe between machine.
Further, step S101 detects the step of saturation pressure force value in described indoor heat exchanger, specifically includes: inspection
Survey the temperature of described indoor heat exchanger, according to the temperature of described indoor heat exchanger, determine the saturation pressure in described indoor heat exchanger
Force value.
Specifically, with continued reference to Fig. 3, owing to the coolant in indoor heat exchanger 306 is gas-liquid mixed state, its temperature value is with full
With there is certain corresponding relation before force value, therefore can by detection indoor heat exchanger 306 temperature determine indoor
Saturation pressure force value in heat exchanger 306, specifically can detect the temperature of indoor heat exchanger 306 by temperature sensor 311.Phase
Than in the direct scheme being carried out by pressure transducer and detecting, the detection scheme of this embodiment is simpler, convenient.
Step S10 shown in Fig. 2 also includes:
Step S102, according to the force value in the running frequency of described compressor, described low pressure line and described saturation pressure
Force value, determines the length of described refrigerant pipeline.
Wherein, step S102 in the specific implementation, can have a following two ways:
Mode one:
Force value in running frequency according to described compressor, described low pressure line and described saturation pressure force value, pass through
The computing formula of refrigerant pipeline, calculates the length of described refrigerant pipeline.
Specifically, it is assumed that the running frequency of compressor be the force value in F, low pressure line be in P1, indoor heat exchanger
Saturation pressure force value be P2, then the pressure drop △ P=P2-P1 in low pressure line.
According to △ P=λ × L × V2/ (2 × d × g) and formula V=F × R/ (π × (d/2)2) △ P=8 × F can be drawn2×
R2×λ×L/(π2×d5×g)；Wherein, λ represents and prolongs journey frictional-loss coefficient, and L represents the pipe range of refrigerant pipeline, and V represents coolant
The flowing velocity of coolant in pipeline, d represents the diameter of refrigerant pipeline, and g represents that acceleration of gravity, F represent the operation frequency of compressor
Rate, R represents the discharge capacity of compressor.
In a fixing air-conditioner system, above λ, d, the R in above-mentioned parameter is known can setting or silent
The constant recognized, therefore, above-mentioned formula can be reduced to: L=K × △ P/F2。
Therefore, the force value in the running frequency of compressor, low pressure line being detected and above-mentioned saturation pressure force value it
After, the length of refrigerant pipeline can be calculated by this formula.
Mode two:
According to the difference between the described saturation pressure force value prestored and the force value in described low pressure line different
Corresponding relation in the case of running frequency and length of pipe, determines the length of described refrigerant pipeline.
Specifically, the pressure differential of low pressure line of air-conditioner system can by the way of experiment, be measured in different pressures
Corresponding relation under contracting unit frequency and length of pipe.And then when actual motion, the pressure differential of low pressure line i.e. can be managed
The value of road length.
The control method of the air-conditioner shown in Fig. 1 also includes:
Step S12, according to the length of described refrigerant pipeline, determines the startup side of compressor when described air conditioner heat-production runs
Formula, wherein, described Starting mode includes described compressor the advancing the speed and/or described compression of running frequency in start-up course
The maximum running frequency of machine.
Specifically, the length of described refrigerant pipeline and described inverse correlation relation of advancing the speed into, and/or described refrigerant pipeline
Length become inverse correlation relation with the maximum running frequency of described compressor.
When refrigerant pipeline is longer, in order to avoid the running frequency of too fast liter of high compressor and use too high frequency to transport
Row causes compressor quickly to spray lubricating oil, and lubricating oil needs to return compression through the long period (owing to refrigerant pipeline is longer)
Machine causes the problem that compressor oil starvation damages, and can slowly promote the running frequency of compressor and/or use less Gao Yun
Line frequency；When refrigerant pipeline is shorter, in order to meet the demand that user quickly heats, improve the comfort of user, permissible
Control compressor fast lifting running frequency and/or use bigger maximum running frequency in start-up course.
Step S14, when receiving the instruction of heating operation, based on a determination that described Starting mode, control described compression
Machine starts.
In the control method of above-mentioned air-conditioner, by the length of the refrigerant pipeline between the indoor and outdoor machine of detection air-conditioner
Degree, and determine air-conditioner Starting mode of compressor when heating operation according to the length of refrigerant pipeline so that in indoor and outdoor
When refrigerant pipeline between machine is longer, compressor can be controlled and in start-up course, slowly promote running frequency and/or use relatively
Little maximum running frequency, it is to avoid too fast rising running frequency and use too high frequency to run to cause compressor quickly to spray
Go out lubricating oil, and lubricating oil needs to return compressor through the long period (owing to refrigerant pipeline is longer) and causes compressor oil starvation to damage
Bad, improve the reliability of compressor and the stability of system.And refrigerant pipeline between indoor and outdoor machine shorter time, can control
Compressor processed fast lifting running frequency and/or use bigger maximum running frequency in start-up course, meets user fast
The demand that speed heats.
In one particular embodiment of the present invention, when the length of refrigerant pipeline is in the range of 0-40 rice, permissible
Select Starting mode 1；When the length of refrigerant pipeline is in the range of 40-80 rice, Starting mode 2 can be selected；Work as coolant
When the length of pipeline is in the range of 80-120 rice, Starting mode 3 can be selected.The difference of different Starting mode is difference
Raising frequency speed and start-up course in maximum running frequency.
As shown in Figure 4, the increase of compressor running frequency in start-up course is approximately linear relationship, increases from frequency A
The time adding to highest frequency B is (T2-T1).
In one embodiment of the invention, in above-mentioned three kinds of modes are the most corresponding raising frequency speed and start-up course
High running frequency is as follows:
The highest 90Hz that can be set as of Starting mode one: B value, raising frequency speed (B-A)/(T2-T1)=5Hz/min；
The highest 80Hz that can be set as of Starting mode two: B value, raising frequency speed (B-A)/(T2-T1)=4Hz/min；
The highest 70Hz that can be set as of Starting mode three: B value, raising frequency speed (B-A)/(T2-T1)=2Hz/min.
Those skilled in the art it is to be appreciated that numerical value in above-mentioned specific embodiment is only an example of the present invention, and
It is not specifically limited, in actual application, can set flexibly according to the practical situation of system.
Fig. 5 shows the schematic block diagram controlling device of air-conditioner according to an embodiment of the invention.
As it is shown in figure 5, the control device 500 of air-conditioner according to an embodiment of the invention, including: detector unit 502,
One determines unit 504 and control unit 506.
Wherein, detector unit 502 is for detecting the length of the refrigerant pipeline between the off-premises station of air-conditioner and indoor set；The
One determines that unit 504, for the length according to described refrigerant pipeline, determines the startup of compressor when described air conditioner heat-production runs
Mode, wherein, described Starting mode includes described compressor the advancing the speed and/or described pressure of running frequency in start-up course
The maximum running frequency of contracting machine；Control unit 506, for when the instruction receiving heating operation, determines list based on described first
The described Starting mode that unit 504 determines, controls described compressor start.
Specifically, by the length of the refrigerant pipeline between the indoor and outdoor machine of detection air-conditioner, and according to refrigerant pipeline
Length determines air-conditioner Starting mode of compressor when heating operation so that the refrigerant pipeline between indoor and outdoor machine is longer
Time, compressor can be controlled and in start-up course, slowly promote running frequency and/or use less maximum running frequency, it is to avoid
Too fast rising running frequency and use too high frequency to run to cause compressor quickly to spray lubricating oil, and lubricating oil needs
Returning compressor through the long period (owing to refrigerant pipeline is longer) causes compressor oil starvation to damage, and improves the reliable of compressor
Property and the stability of system.And refrigerant pipeline between indoor and outdoor machine shorter time, compressor can be controlled in start-up course
Fast lifting running frequency and/or use bigger maximum running frequency, meets the demand that user quickly heats.
In one embodiment of the invention, described detector unit 502 includes: performance element 5022, at described sky
When adjusting device refrigerating operaton, detect the force value in the low pressure line of the running frequency of described compressor, described off-premises station and indoor
Saturation pressure force value in heat exchanger；Second determines unit 5024, for according to the running frequency of described compressor, described low-voltage tube
Force value in road and described saturation pressure force value, determine the length of described refrigerant pipeline.
In this embodiment, when air-conditioner refrigerating operaton, the coolant of High Temperature High Pressure, after compressor is discharged, passes through four-way
Reversal valve enters outdoor heat exchanger, flows into indoor set afterwards, then flows out from indoor set and return compression through four-way change-over valve
Machine (before returning compressor, can pass through gas-liquid separator), now, the low pressure line of off-premises station is coolant from indoor heat exchange
Device flows out to the position in the pipeline of four-way change-over valve near four-way change-over valve.
In the above-described embodiments, further, described performance element 5022 is specifically additionally operable to: detect described indoor heat exchanger
Temperature, according to the temperature of described indoor heat exchanger, determine the saturation pressure force value in described indoor heat exchanger.
In this embodiment, the coolant in indoor heat exchanger is gas-liquid mixed state, before its temperature value and saturation pressure force value
There is certain corresponding relation, therefore can determine the saturation pressure in indoor heat exchanger by the temperature of detection indoor heat exchanger
Force value, compared to the direct scheme being carried out by pressure transducer and detecting, the detection scheme of this embodiment is simpler, convenient.
In one embodiment of the invention, described second determine unit 5024 specifically for: according to described compressor
Force value in running frequency, described low pressure line and described saturation pressure force value, by the computing formula of refrigerant pipeline, calculate institute
State the length of refrigerant pipeline；Or
According to the difference between the described saturation pressure force value prestored and the force value in described low pressure line different
Corresponding relation in the case of running frequency and length of pipe, determines the length of described refrigerant pipeline.
Wherein, the length of described refrigerant pipeline and described inverse correlation relation of advancing the speed into, and/or described refrigerant pipeline
Length becomes inverse correlation relation with the maximum running frequency of described compressor.
Specifically, when refrigerant pipeline is longer, in order to avoid the running frequency of too fast liter of high compressor and use too high
Frequency run and cause compressor quickly to spray lubricating oil, and lubricating oil needs through long period (owing to refrigerant pipeline is longer)
Return the problem that compressor causes compressor oil starvation to damage, can slowly promote the running frequency of compressor and/or use less
Maximum running frequency；When refrigerant pipeline is shorter, in order to meet the demand that user quickly heats, the use improving user is comfortable
Degree, can control compressor fast lifting running frequency and/or use bigger maximum running frequency in start-up course.
Additionally, the invention allows for a kind of air-conditioner, including: the control device 500 of air-conditioner as shown in Figure 5.Should
Air-conditioner can be multi-gang air-conditioner device, it is also possible to be common one-driving-one air conditioner, such as domestic air conditioner.
Technical scheme being described in detail above in association with accompanying drawing, the present invention proposes the control of a kind of new air-conditioner
Scheme processed, can be when air conditioner heat-production runs, and according to the length of the refrigerant pipeline between indoor and outdoor machine, adjusts compressor operating
Advancing the speed and/or the maximum running frequency of compressor of frequency, it is ensured that startup reliability when refrigerant pipeline is longer and coolant
Users'comfort when pipeline is shorter.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (11)
1. the control method of an air-conditioner, it is characterised in that including:
The length of the refrigerant pipeline between off-premises station and the indoor set of detection air-conditioner；
According to the length of described refrigerant pipeline, determine the Starting mode of compressor when described air conditioner heat-production runs, wherein, described
Starting mode includes described compressor the advancing the speed and/or the highest operation of described compressor of running frequency in start-up course
Frequency；
When receiving the instruction of heating operation, based on a determination that described Starting mode, control described compressor start.
The control method of air-conditioner the most according to claim 1, it is characterised in that the off-premises station of described detection air-conditioner with
The step of the length of the refrigerant pipeline between indoor set, specifically includes:
When described air-conditioner refrigerating operaton, detect in the low pressure line of the running frequency of described compressor, described off-premises station
Saturation pressure force value in force value and indoor heat exchanger；
Force value in running frequency according to described compressor, described low pressure line and described saturation pressure force value, determine described
The length of refrigerant pipeline.
The control method of air-conditioner the most according to claim 2, it is characterised in that detect satisfying in described indoor heat exchanger
With the step of force value, specifically include:
Detect the temperature of described indoor heat exchanger, according to the temperature of described indoor heat exchanger, determine in described indoor heat exchanger
Saturation pressure force value.
The control method of air-conditioner the most according to claim 2, it is characterised in that according to the operation frequency of described compressor
Force value in rate, described low pressure line and described saturation pressure force value, determine the step of the length of described refrigerant pipeline, specifically wrap
Include:
Force value in running frequency according to described compressor, described low pressure line and described saturation pressure force value, pass through coolant
The computing formula of pipeline, calculates the length of described refrigerant pipeline；Or
According to the difference between the described saturation pressure force value prestored and the force value in described low pressure line in different operations
Corresponding relation in the case of frequency and length of pipe, determines the length of described refrigerant pipeline.
The control method of air-conditioner the most according to any one of claim 1 to 4, it is characterised in that described refrigerant pipeline
Length and described inverse correlation relation of advancing the speed into, and/or the Gao Yun of the length of described refrigerant pipeline and described compressor
Line frequency becomes inverse correlation relation.
6. the control device of an air-conditioner, it is characterised in that including:
Detector unit, for detecting the length of the refrigerant pipeline between the off-premises station of air-conditioner and indoor set；
First determines unit, for the length according to described refrigerant pipeline, determines compressor when described air conditioner heat-production runs
Starting mode, wherein, described Starting mode includes described compressor the advancing the speed and/or institute of running frequency in start-up course
State the maximum running frequency of compressor；
Control unit, for when the instruction receiving heating operation, determines, based on described first, the described startup that unit determines
Mode, controls described compressor start.
The control device of air-conditioner the most according to claim 6, it is characterised in that described detector unit includes:
Performance element, for when described air-conditioner refrigerating operaton, detects the running frequency of described compressor, described off-premises station
Force value in low pressure line and the saturation pressure force value in indoor heat exchanger；
Second determines unit, for according to the force value in the running frequency of described compressor, described low pressure line and described full
And force value, determine the length of described refrigerant pipeline.
The control device of air-conditioner the most according to claim 7, it is characterised in that described performance element is specifically additionally operable to:
Detect the temperature of described indoor heat exchanger, according to the temperature of described indoor heat exchanger, determine in described indoor heat exchanger
Saturation pressure force value.
The control device of air-conditioner the most according to claim 7, it is characterised in that described second determines that unit is specifically used
In:
Force value in running frequency according to described compressor, described low pressure line and described saturation pressure force value, pass through coolant
The computing formula of pipeline, calculates the length of described refrigerant pipeline；Or
According to the difference between the described saturation pressure force value prestored and the force value in described low pressure line in different operations
Corresponding relation in the case of frequency and length of pipe, determines the length of described refrigerant pipeline.
10. according to the control device of the air-conditioner according to any one of claim 6 to 9, it is characterised in that described refrigerant pipeline
Length and described inverse correlation relation of advancing the speed into, and/or the Gao Yun of the length of described refrigerant pipeline and described compressor
Line frequency becomes inverse correlation relation.
11. 1 kinds of air-conditioners, it is characterised in that including: the control dress of the air-conditioner as according to any one of claim 6 to 10
Put.
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