CN106352635A - Running control method and device for air conditioning system compressor - Google Patents
Running control method and device for air conditioning system compressor Download PDFInfo
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- CN106352635A CN106352635A CN201610798672.0A CN201610798672A CN106352635A CN 106352635 A CN106352635 A CN 106352635A CN 201610798672 A CN201610798672 A CN 201610798672A CN 106352635 A CN106352635 A CN 106352635A
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- compressor
- aerofluxuss
- saturation temperature
- temperature
- range
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Classifications
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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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- 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
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
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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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/027—Compressor control by controlling pressure
- F25B2600/0271—Compressor control by controlling pressure the discharge pressure
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/027—Compressor control by controlling pressure
- F25B2600/0272—Compressor control by controlling pressure the suction pressure
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
Abstract
The invention discloses a running control method and device for an air conditioning system compressor. The method includes the steps that exhaust pressure of an exhaust port of the air conditioning system compressor is acquired in real time; exhaust saturation temperature Tc corresponding to the exhaust pressure is determined; running of the compressor is adjusted according to the exhaust saturation temperature Tc, and the high-pressure running process of the compressor is located within the normal running range. The problems that in the prior art, an air conditioning unit runs exceeding the normal running range, so that the service life of a compressor is shortened is solved, the running reliability of the air conditioning unit is improved, and furthermore, the service life of the compressor is prolonged.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of progress control method of air-conditioning compressor
And device.
Background technology
Most of air-conditioning products only carry out unit reliability experiment when carrying out unit development at present, after checking is qualified just
Not in concern machine set compressor operation conditions, in the follow-up work process of unit, all may in high-voltage operation or low pressure operation
The situation that exceed its own normal operation range occurs, reduces the reliability of compressor operating.
Run exceeding in its own normal operation range for air conditioning unit in correlation technique, lead to the compressor operating can
The problem reducing by property, not yet proposes to efficiently solve scheme at present.
Content of the invention
The invention provides a kind of progress control method of air-conditioning compressor and device, at least to solve prior art
In air conditioning unit exceed in its own normal operation range run, lead to compressor operating reliability reduce problem.
For solving above-mentioned technical problem, according to the one side of the embodiment of the present disclosure, the invention provides a kind of air-conditioning system
The progress control method of system compressor, the method includes: obtains the pressure at expulsion of air-conditioning compressor air vent in real time；Determine
Pressure at expulsion corresponding aerofluxuss saturation temperature tc；Adjust the operation of compressor according to aerofluxuss saturation temperature tc, so that compressor
High-voltage operation process is in normal operation range.
Further, the operation of compressor is adjusted according to aerofluxuss saturation temperature tc, so that the high-voltage operation process of compressor
It is in normal operation range, comprising: obtain compressor corresponding range of operation figure；According to range of operation figure, determine this compressor
Range of operation curve in busy hour；The range of operation curve of the busy hour of determination is fitted, determines compression
The high pressure critical curve equation of machine；According to aerofluxuss saturation temperature tc and high pressure critical curve equation, adjust the operation of compressor.
Further, the high pressure critical curve equation of compressor is determined by below equation:
Tc '=alpha+beta * (t0+ γ), wherein, tc ' is high voltage protective critical temperature, and t0 is the operation side according to air conditioning system
The temperature value that formula real-time detection arrives, when the method for operation of air conditioning system is refrigeration, t0 is heat exchange manifold temperature value, in air-conditioning
When the method for operation of system is to heat, t0 is defrost pipe temperature value, and α, γ are the operation model according to compressor in busy hour
Enclose the temperature parameter of curve values corresponding saturation temperature matching determination, β is the Slope Parameters of the high pressure critical curve of matching.
Further, according to aerofluxuss saturation temperature tc and high pressure critical curve equation, adjust the operation of compressor, comprising:
Step s1: judge aerofluxuss saturation temperature tc and the magnitude relationship of tc ', if aerofluxuss saturation temperature tc is not more than tc ', do not adjusted
Section, if aerofluxuss saturation temperature tc is more than tc ', controls compressor to force to reduce the frequency of default value；Step s2: forcing to reduce
After compressor frequency preset time threshold, continue to judge aerofluxuss saturation temperature tc and the magnitude relationship of tc ', if aerofluxuss saturation temperature
Tc, still greater than tc ', controls compressor to force to reduce the frequency of default value；Step s3: circulation above-mentioned steps s2, until meeting pre-
If after maintenance condition, compressor is controlled to maintain the current method of operation.
Further, until after meeting default maintenance condition, controlling compressor to maintain the current method of operation, comprising: strong
System reduce compressor frequency number of times meet predetermined threshold value number of times after, by the minimum of direct this compressor near of the frequency of compressor
When running frequency is run, or, when aerofluxuss saturation temperature tc is not more than tc ', confirm to meet default maintenance condition.
Further, after determining pressure at expulsion corresponding aerofluxuss saturation temperature tc, the method also includes: tc is according to row
Gas saturation temperature tc adjusts the operation of compressor, so that the low pressure operation process of compressor is in normal operation range.
Further, the operation of compressor is adjusted according to aerofluxuss saturation temperature tc, so that the low pressure operation process of compressor
It is in normal operation range, comprising: obtain compressor corresponding range of operation figure；According to range of operation figure, determine this compressor
Range of operation curve in minimum load；Range of operation curve during the minimum load of determination is fitted, determines compression
The low pressure critical curve equation of machine；According to aerofluxuss saturation temperature tc and low pressure critical curve equation, adjust the operation of compressor.
Further, the low pressure critical curve equation of compressor is determined by below equation:
Tc "=δ+ε * (t0+ η), wherein, tc " it is low-voltage variation critical temperature, t0 is the method for operation according to air conditioning system
The temperature value that real-time detection arrives, when the method for operation of air conditioning system is refrigeration, t0 is heat exchange manifold temperature value, in air-conditioning system
When the method for operation of system is to heat, t0 is defrost pipe temperature value, and δ, η are that the range of operation in minimum load is bent according to compressor
The temperature parameter that the corresponding saturation temperature matching of line value determines, ε is the Slope Parameters of the low pressure critical curve of matching.
Further, according to aerofluxuss saturation temperature tc and low pressure critical curve equation, adjust the operation of compressor, comprising:
Judge aerofluxuss saturation temperature tc and tc " magnitude relationship, if aerofluxuss saturation temperature tc be not less than tc ", do not carry out action, if aerofluxuss
Saturation temperature tc is less than tc ", control the outer machine of air conditioning system to continue to run with, and send information to machine in air conditioning system；Sending out
After sending information preset time threshold, continue judge aerofluxuss saturation temperature tc and tc " magnitude relationship, if aerofluxuss saturation temperature
Tc, still less than tc ', continues to send information to machine in air conditioning system, until aerofluxuss saturation temperature tc is not less than tc ".
A kind of another aspect according to the embodiment of the present disclosure, there is provided operating control device of air-conditioning compressor, should
Device includes: first acquisition unit, for the real-time pressure at expulsion obtaining air-conditioning compressor air vent；First determines list
Unit, for determining pressure at expulsion corresponding aerofluxuss saturation temperature tc；High voltage protective unit, for adjusting according to aerofluxuss saturation temperature tc
The operation of section compressor, so that the high-voltage operation process of compressor is in normal operation range.
Further, high voltage protective unit includes: the first acquisition module, for obtaining the corresponding range of operation of compressor
Figure；First determining module, for according to range of operation figure, determining the range of operation curve in busy hour for this compressor；The
Two determining modules, for being fitted the range of operation curve of the busy hour of determination, determine that the high pressure of compressor is critical
Curvilinear equation；First adjustment module, according to aerofluxuss saturation temperature tc and high pressure critical curve equation, adjusts the operation of compressor.
Further, the second determining module determines the high pressure critical curve equation of compressor by below equation:
Tc '=alpha+beta * (t0+ γ), wherein, tc ' is high voltage protective critical temperature, and t0 is the operation side according to air conditioning system
The temperature value that formula real-time detection arrives, when the method for operation of air conditioning system is refrigeration, t0 is heat exchange manifold temperature value, in air-conditioning
When the method for operation of system is to heat, t0 is defrost pipe temperature value, and α, γ are the operation model according to compressor in busy hour
Enclose the temperature parameter of curve values corresponding saturation temperature matching determination, β is the Slope Parameters of the high pressure critical curve of matching.
Further, the first adjustment module adjusts the operation of compressor: step s1: judge aerofluxuss saturation according to following steps
Temperature tc and the magnitude relationship of tc ', if aerofluxuss saturation temperature tc is not more than tc ', are not adjusted, if aerofluxuss saturation temperature tc is big
In tc ', compressor is controlled to force to reduce the frequency of default value；Step s2: in mandatory down low compression unit frequency Preset Time threshold
After value, continue to judge aerofluxuss saturation temperature tc and the magnitude relationship of tc ', if aerofluxuss saturation temperature tc is still greater than tc ', control compression
Machine is forced to reduce the frequency of default value；Step s3: circulation above-mentioned steps s2, until after meeting default maintenance condition, controlling pressure
Contracting machine maintains the current method of operation.
Further, the first adjustment module, will after the number of times of mandatory down low compression unit frequency meets predetermined threshold value number of times
When the minimum running frequency of direct this compressor near of the frequency of compressor is run, or, in aerofluxuss saturation temperature tc not
During more than tc ', confirm to meet default maintenance condition.
Further, this device also includes: tc low-voltage variation unit, for adjusting compressor according to aerofluxuss saturation temperature tc
Operation so that the low pressure operation process of compressor is in normal operation range.
Further, low-voltage variation unit includes: the second acquisition module, for obtaining the corresponding range of operation of compressor
Figure；3rd determining module, for according to range of operation figure, determining the range of operation curve in minimum load for this compressor；The
Four determining modules, for being fitted the range of operation curve during minimum load of determination, determine that the low pressure of compressor is critical
Curvilinear equation；Second adjustment module, for according to aerofluxuss saturation temperature tc and low pressure critical curve equation, adjusting the fortune of compressor
OK.
Further, the second adjustment module determines the low pressure critical curve equation of compressor: tc by below equation "=δ+
ε * (t0+ η), wherein, tc " it is low-voltage variation critical temperature, t0 is the temperature being arrived according to the method for operation real-time detection of air conditioning system
Angle value, when the method for operation of air conditioning system is refrigeration, t0 is heat exchange manifold temperature value, in the method for operation of air conditioning system is
When heating, t0 is defrost pipe temperature value, and δ, η are the corresponding saturation of range of operation curve values according to compressor in minimum load
The temperature parameter that temperature foh determines, ε is the Slope Parameters of the low pressure critical curve of matching.
Further, the second adjustment module includes: the first submodule, for judging aerofluxuss saturation temperature tc and tc " big
Little relation, if aerofluxuss saturation temperature tc is not less than tc ", do not carry out action, if aerofluxuss saturation temperature tc is less than tc ", control air-conditioning
The outer machine of system continues to run with, and sends information to machine in air conditioning system；Second submodule, for pre- in transmission information
If after time threshold, continue judge aerofluxuss saturation temperature tc and tc " magnitude relationship, if aerofluxuss saturation temperature tc is still less than tc ',
Continue to send information to machine in air conditioning system, until aerofluxuss saturation temperature tc is not less than tc ".
In the present invention, it is not just at carrying out during unit development carrying out unit reliability experiment, just do not exist after checking is qualified
Concern machine set compressor operation conditions, but during operation of air conditioner, equally machine set compressor operation conditions is detected,
Obtain the pressure of exhaust outlet of compressor in real time during operation of air conditioner, in conjunction with the property parameters of compressor of air conditioner, determine and obtain
The corresponding saturation temperature of pressure value, using this saturation temperature as judgement basis, air conditioning unit reliability operation is judged,
Air conditioning unit when exceeding operation in its own normal operation range, it is adjusted controlling.The present invention effectively solves existing
Have in technology air conditioning unit exceed in its own normal operation range run, lead to the problem of compressor service life reduction, improve
Air conditioning unit reliability of operation, further, extends the service life of compressor.
Brief description
Fig. 1 is a kind of optional flow process of the progress control method of air-conditioning compressor according to embodiments of the present invention
Figure；
Fig. 2 be air-conditioning compressor according to embodiments of the present invention progress control method in corresponding air conditioning system show
It is intended to；
Fig. 3 be air-conditioning compressor according to embodiments of the present invention progress control method in a kind of compressor operating model
Enclose figure；
Fig. 4 is a kind of optional structural frames of the operating control device of air-conditioning compressor according to embodiments of the present invention
Figure；And
Fig. 5 is the another a kind of optional structure of operating control device of air-conditioning compressor according to embodiments of the present invention
Block diagram.
Specific embodiment
Here will in detail exemplary embodiment be illustrated, its example is illustrated in the accompanying drawings.Explained below is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the present invention.On the contrary, they be only with such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, the present invention.
Embodiment 1
Below in conjunction with the accompanying drawings the progress control method of the air-conditioning compressor that the present invention provides is illustrated.
The progress control method of the air-conditioning compressor that the present invention provides can apply in domestic air conditioner it is also possible to
It is applied to the air conditioning system of other environment, for example: the environment such as market, naval vessel, can be corresponded to by writing in air conditioning system mainboard
Program realize, in some embodiments it is possible to by install software by way of realize, Fig. 1 illustrates the air-conditioning of the present invention
A kind of optional flow chart of the progress control method of system compressors, as shown in figure 1, the method may comprise steps of:
S102, obtains the pressure at expulsion of air-conditioning compressor air vent in real time；
S104, determines pressure at expulsion corresponding aerofluxuss saturation temperature；
S106, adjusts the operation of compressor, so that the high-voltage operation process of compressor is just according to aerofluxuss saturation temperature
Often range of operation.
In the above-mentioned embodiment that the present invention provides, it is not just at carrying out during unit development carrying out unit reliability in fact
Test, just not in concern machine set compressor operation conditions after checking is qualified, but during operation of air conditioner, equally unit is compressed
Machine operation conditions is detected, obtains the pressure of exhaust outlet of compressor in real time, in conjunction with compressor of air conditioner during operation of air conditioner
Property parameters, determine obtain the corresponding saturation temperature of pressure value, using this saturation temperature as judgement basis, to air conditioning unit
Reliability operation is judged, air conditioning unit when exceeding operation in its own normal operation range, is adjusted controlling.This
Invention effectively solve in prior art air conditioning unit exceed in its own normal operation range run, lead to the compressor longevity
The problem that life reduces, improves air conditioning unit reliability of operation, further, extends the service life of compressor.
Below in conjunction with the accompanying drawings 2 and accompanying drawing 3, the enforcement to the present embodiment is specifically described, to be better understood from this
Bright embodiment.
Fig. 2 illustrates a kind of corresponding optional air conditioning system structure chart of the progress control method of this air-conditioning compressor,
As shown in Fig. 2 this system includes: compressor, aerofluxuss temperature-sensitive bag, high pressure sensor, high-voltage switch gear, cross valve, finned heat exchanger,
Environment temperature-sensitive bag, defrost temperature-sensitive bag, filter, electric expansion valve, plate type heat exchanger, vapour liquid separator, air-breathing temperature-sensitive bag, etc. portion
Point, specifically can be found in the relation of the sequence number shown in table one and title:
| Sequence number | Title | Sequence number | Title |
| 1 | Compressor | 8 | Defrost temperature-sensitive bag |
| 2 | Aerofluxuss temperature-sensitive bag | 9 | Filter |
| 3 | High pressure sensor | 10 | Electric expansion valve |
| 4 | High-voltage switch gear | 11 | Plate type heat exchanger |
| 5 | Cross valve | 12 | Vapour liquid separator |
| 6 | Finned heat exchanger | 13 | Air-breathing temperature-sensitive bag |
| 7 | Environment temperature-sensitive bag | 14 | Coolant liquid pipe temperature-sensitive bag |
| 15 | Coolant trachea temperature-sensitive bag |
Table one
During implementing, in the operation adjusting compressor according to aerofluxuss saturation temperature tc, so that the high pressure of compressor
When running is in normal operation range, obtain compressor corresponding range of operation figure；According to range of operation figure, determine this pressure
Contracting machine is in the range of operation curve of busy hour；The range of operation curve of the busy hour of determination is fitted, determines
The high pressure critical curve equation of compressor；According to aerofluxuss saturation temperature tc and high pressure critical curve equation, adjust the fortune of compressor
OK.
Wherein, Fig. 3 illustrates a kind of compressor operating areal map characterizing compressor operating attribute, as shown in Figure 3, horizontal seat
Indicate suction pressure of compressor ps [mpa], vertical coordinate illustrates Compressor Discharge Pressure pd [mpa], and in figure illustrates different operating
Range of operation under frequency, and in dotted line, show schematically high pressure ratio area and low-pressure ratio area.
Preferably, the high pressure critical curve equation of compressor: tc '=alpha+beta * (t0+ γ) is determined by below equation, its
In, tc ' is high voltage protective critical temperature, and t0 is the temperature value being arrived according to the method for operation real-time detection of air conditioning system, in air-conditioning
When the method for operation of system is refrigeration, t0 is heat exchange manifold temperature value, and when the method for operation of air conditioning system is to heat, t0 is
Defrost pipe temperature value, α, γ are true in the range of operation curve values corresponding saturation temperature matching of busy hour according to compressor
Fixed temperature parameter, β is the Slope Parameters of the high pressure critical curve of matching.
Additionally, according to aerofluxuss saturation temperature tc and high pressure critical curve equation, during the operation of regulation compressor, can adopt
Use following steps s1-s3:
Step s1: judge aerofluxuss saturation temperature tc and the magnitude relationship of tc '；If aerofluxuss saturation temperature tc is not more than tc ', no
It is adjusted, if aerofluxuss saturation temperature tc is more than tc ', control compressor to force to reduce the frequency of default value；
Step s2: after mandatory down low compression unit frequency preset time threshold, continue to judge aerofluxuss saturation temperature tc and tc '
Magnitude relationship；If aerofluxuss saturation temperature tc is still greater than tc ', compressor is controlled to force to reduce the frequency of default value；
Step s3: circulation above-mentioned steps s2, until after meeting default maintenance condition, controlling compressor to maintain current operation side
Formula.
Preferably, after the number of times in mandatory down low compression unit frequency meets predetermined threshold value number of times, will be straight for the frequency of compressor
When connecing the minimum running frequency of this compressor near and being run, or, when aerofluxuss saturation temperature tc is not more than tc ', confirm
Meet above-mentioned described default maintenance condition.
Above-mentioned embodiment is mainly the protection to operation of air conditioner high-pressure section, in an optional embodiment, also
Provide the control method of the protection to operation of air conditioner low-pressure section, specifically, on the basis of above-mentioned embodiment, this control
Method processed also includes: tc adjusts the operation of compressor according to aerofluxuss saturation temperature tc, so that at the low pressure operation process of compressor
In normal operation range.
During implementing, in the operation adjusting compressor according to aerofluxuss saturation temperature tc, so that the low pressure of compressor
When running is in normal operation range, obtain compressor corresponding range of operation figure；According to range of operation figure, determine this pressure
The range of operation curve in minimum load for the contracting machine；Range of operation curve during the minimum load of determination is fitted, determines
The low pressure critical curve equation of compressor；According to aerofluxuss saturation temperature tc and low pressure critical curve equation, adjust the fortune of compressor
OK.
Wherein, compressor operating areal map still can be found in shown in Fig. 3, and abscissa illustrates suction pressure of compressor ps
[mpa], vertical coordinate illustrates Compressor Discharge Pressure pd [mpa], and in figure illustrates the range of operation under different operating frequency, Yi Jixu
High pressure ratio area and low-pressure ratio area is shown schematically in line.
Preferably, the low pressure critical curve equation of compressor is determined by below equation:
Tc "=δ+ε * (t0+ η), wherein, tc " it is low-voltage variation critical temperature, t0 is the method for operation according to air conditioning system
The temperature value that real-time detection arrives, when the method for operation of air conditioning system is refrigeration, t0 is heat exchange manifold temperature value, in air-conditioning system
When the method for operation of system is to heat, t0 is defrost pipe temperature value, and δ, η are that the range of operation in minimum load is bent according to compressor
The temperature parameter that the corresponding saturation temperature matching of line value determines, ε is the Slope Parameters of the low pressure critical curve of matching.
Additionally, according to aerofluxuss saturation temperature tc and low pressure critical curve equation, during the operation of regulation compressor, first judging row
The magnitude relationship of gas saturation temperature tc and tc ", if aerofluxuss saturation temperature tc is not less than tc ", do not carry out action, if aerofluxuss saturation temperature
Degree tc is less than tc ", control the outer machine of air conditioning system to continue to run with, and send information to machine in air conditioning system；Then, sending
After information preset time threshold, continue judge aerofluxuss saturation temperature tc and tc " magnitude relationship, if aerofluxuss saturation temperature tc
Still less than tc ', continue to send information to machine in air conditioning system, until aerofluxuss saturation temperature tc is not less than tc ".
Said method is described further with reference to the air conditioning system shown in Fig. 2 and instantiation:
Air conditioning system shown in Figure 2, unit in running, the temperature and pressure value of unit real-time detection, specifically
For, pressure at expulsion p is obtained by high pressure sensor 3Aerofluxuss, delivery temperature t is obtained by aerofluxuss temperature-sensitive bagAerofluxuss, by aerofluxuss sense
Thermometer bulb 2 obtains delivery temperature tAerofluxuss, defrost pipe temperature t is obtained by defrost temperature-sensitive bag 8Defrost.
After obtaining above-mentioned parameter, the present invention can be divided into three parts to carry out:
1. the calculating corresponding saturation temperature of pressure:
This process can learn pressure at expulsion p by looking into saturation pressure-temperature parameter tableAerofluxussCorresponding saturation temperature
Degree.
2. high pressure ratio protection:
This process mainly carries out contrast meter with the maximal pressure setting than line by the aerofluxuss saturation temperature of real-time monitoring unit
Calculate.
Specifically, the range of operation figure according to machine set compressor, finds the range of operation in peak load for the machine set compressor
Curve, by the matching to pressure curve, obtains the high pressure critical curve equation of compressor.
Wherein, maximal pressure than line formula can be: tc '=alpha+beta * (t0+ γ)
Wherein, refrigeration mode t0 changes liquid pipe temperature for plate；Heating mode t0 is defrost pipe temperature, and α, γ are according to compressor
The temperature parameter determining in the range of operation curve values corresponding saturation temperature matching of busy hour, β is that the high pressure of matching faces
Boundary's slope of a curve parameter.
It is more than tc ' when aerofluxuss saturation temperature tc is detected, then compressor is forced to reduce a hz, maintain ts to detect, if still again
So there is tc to be more than tc ', then reduce b hz again, detect again after maintaining ts, if tc is still detected to be more than tc ', then reducing c hz,
Detect again after maintaining ts, if still there being tc to be more than tc ', being directly reduced to minimum frequency, detecting again after maintaining ts；In frequency reducing
Cheng Zhong, if having been reduced to low-limit frequency, is run by low-limit frequency；Whenever, tc is detected and be less than or equal to tc ', exit height
Pressure ratio is protected, and adjusts by healthy compressor and controls.
3. low-pressure ratio protection:
This process mainly carries out contrast meter with the minimal pressure setting than line by the aerofluxuss saturation temperature of real-time monitoring unit
Calculate.
According to the range of operation curve of compressor, the range of operation finding machine set compressor compressor in minimum load is bent
Line, by the matching to pressure curve, obtains the low pressure critical curve equation of compressor.
Wherein, minimal pressure than line formula can be: tc "=δ+ε * (t0+ η) wherein, refrigeration mode t0 changes liquid pipe temperature for plate；
Heating mode t0 is defrost pipe temperature, and δ, η are the corresponding saturation of range of operation curve values according to compressor in minimum load
The temperature parameter that temperature foh determines, ε is the Slope Parameters of the low pressure critical curve of matching.
It is less than tc when tc is detected ", then send out protection reason and be given to interior machine, outer machine continues to run with, without any changes, every ts
After detect, such as also tc is less than tc ", then continue to send out protection reason to interior machine；If tc is more than or equal to tc ", then it is not required to send out protection
Reason, normal regulating.
Judge compressor whether just by the corresponding saturation temperature of high pressure of real-time detection unit in above-described embodiment
Often in range of operation, over range is run and is adjusted in time, protect compressor, extend the service life of compressor.
Embodiment 2
Based on the progress control method of the air-conditioning compressor providing in above-described embodiment 1, the present invention is optionally implemented
Example 2 additionally provides a kind of operating control device of air-conditioning compressor, and specifically, Fig. 4 illustrates that one kind of this device is optional
Structured flowchart, as shown in figure 4, this device includes: first acquisition unit 42, obtain air-conditioning compressor aerofluxuss for real-time
The pressure at expulsion of mouth；First determining unit 44, for determining pressure at expulsion corresponding aerofluxuss saturation temperature tc；High voltage protective unit
46, for adjusting the operation of compressor according to aerofluxuss saturation temperature tc, so that the high-voltage operation process of compressor is in normal fortune
Line range.
Further, high voltage protective unit includes: the first acquisition module, for obtaining the corresponding range of operation of compressor
Figure；First determining module, for according to range of operation figure, determining the range of operation curve in busy hour for this compressor；The
Two determining modules, for being fitted the range of operation curve of the busy hour of determination, determine that the high pressure of compressor is critical
Curvilinear equation；First adjustment module, according to aerofluxuss saturation temperature tc and high pressure critical curve equation, adjusts the operation of compressor.
Further, the second determining module determines the high pressure critical curve equation of compressor by below equation:
Tc '=alpha+beta * (t0+ γ), wherein, tc ' is high voltage protective critical temperature, and t0 is the operation side according to air conditioning system
The temperature value that formula real-time detection arrives, when the method for operation of air conditioning system is refrigeration, t0 is heat exchange manifold temperature value, in air-conditioning
When the method for operation of system is to heat, t0 is defrost pipe temperature value, and α, γ are the operation model according to compressor in busy hour
Enclose the temperature parameter of curve values corresponding saturation temperature matching determination, β is the Slope Parameters of the high pressure critical curve of matching.
Further, the first adjustment module adjusts the operation of compressor: step s1: judge aerofluxuss saturation according to following steps
Temperature tc and the magnitude relationship of tc ', if aerofluxuss saturation temperature tc is not more than tc ', are not adjusted, if aerofluxuss saturation temperature tc is big
In tc ', compressor is controlled to force to reduce the frequency of default value；Step s2: in mandatory down low compression unit frequency Preset Time threshold
After value, continue to judge aerofluxuss saturation temperature tc and the magnitude relationship of tc ', if aerofluxuss saturation temperature tc is still greater than tc ', control compression
Machine is forced to reduce the frequency of default value；Step s3: circulation above-mentioned steps s2, until after meeting default maintenance condition, controlling pressure
Contracting machine maintains the current method of operation.
Further, the first adjustment module, will after the number of times of mandatory down low compression unit frequency meets predetermined threshold value number of times
When the minimum running frequency of direct this compressor near of the frequency of compressor is run, or, in aerofluxuss saturation temperature tc not
During more than tc ', confirm to meet default maintenance condition.
Further, as shown in figure 5, this device also includes: low-voltage variation unit 52, for according to aerofluxuss saturation temperature tc
Adjust the operation of compressor, so that the low pressure operation process of compressor is in normal operation range.
Further, low-voltage variation unit includes: the second acquisition module, for obtaining the corresponding range of operation of compressor
Figure；3rd determining module, for according to range of operation figure, determining the range of operation curve in minimum load for this compressor；The
Four determining modules, for being fitted the range of operation curve during minimum load of determination, determine that the low pressure of compressor is critical
Curvilinear equation；Second adjustment module, for according to aerofluxuss saturation temperature tc and low pressure critical curve equation, adjusting the fortune of compressor
OK.
Further, the second adjustment module determines the low pressure critical curve equation of compressor: tc by below equation "=δ+
ε * (t0+ η), wherein, tc " it is low-voltage variation critical temperature, t0 is the temperature being arrived according to the method for operation real-time detection of air conditioning system
Angle value, when the method for operation of air conditioning system is refrigeration, t0 is heat exchange manifold temperature value, in the method for operation of air conditioning system is
When heating, t0 is defrost pipe temperature value, and δ, η are the corresponding saturation of range of operation curve values according to compressor in minimum load
The temperature parameter that temperature foh determines, ε is the Slope Parameters of the low pressure critical curve of matching.
Further, the second adjustment module includes: the first submodule, for judging aerofluxuss saturation temperature tc and tc " big
Little relation, if aerofluxuss saturation temperature tc is not less than tc ", do not carry out action, if aerofluxuss saturation temperature tc is less than tc ", control air-conditioning
The outer machine of system continues to run with, and sends information to machine in air conditioning system；Second submodule, for pre- in transmission information
If after time threshold, continue judge aerofluxuss saturation temperature tc and tc " magnitude relationship, if aerofluxuss saturation temperature tc is still less than tc ',
Continue to send information to machine in air conditioning system, until aerofluxuss saturation temperature tc is not less than tc ".
With regard to the device in above-described embodiment, wherein unit, the concrete mode of module execution operation are relevant
It has been described in detail in the embodiment of the method, explanation will be not set forth in detail herein.
It can be seen from the foregoing description that in an embodiment of the present invention, it is not just at carrying out during unit development carrying out machine
Group failtests, just not in concern machine set compressor operation conditions after checking is qualified, but during operation of air conditioner, equally
Machine set compressor operation conditions is detected, obtains the pressure of exhaust outlet of compressor during operation of air conditioner in real time, in conjunction with
The property parameters of compressor of air conditioner, determine the corresponding saturation temperature of pressure value obtaining, using this saturation temperature as judgement basis,
Air conditioning unit reliability operation is judged, air conditioning unit when exceeding operation in its own normal operation range, carries out
Adjust and control.The present invention effectively solve in prior art air conditioning unit exceed in its own normal operation range run,
Lead to the problem of compressor service life reduction, improve air conditioning unit reliability of operation, further, extend the use longevity of compressor
Life.
Those skilled in the art, after considering description and putting into practice invention disclosed herein, will readily occur to its of the present invention
Its embodiment.The application is intended to any modification, purposes or the adaptations of the present invention, these modifications, purposes or
Person's adaptations are followed the general principle of the present invention and are included the common knowledge in the art that the present invention does not invent
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It is described above and precision architecture illustrated in the accompanying drawings it should be appreciated that the invention is not limited in, and
And various modifications and changes can carried out without departing from the scope.The scope of the present invention only to be limited by appended claim.
Claims (11)
1. a kind of progress control method of air-conditioning compressor is it is characterised in that include:
Obtain the pressure at expulsion of air-conditioning compressor air vent in real time；
Determine described pressure at expulsion corresponding aerofluxuss saturation temperature tc；
Adjust the operation of described compressor according to described aerofluxuss saturation temperature tc, so that at the high-voltage operation process of described compressor
In normal operation range.
2. method according to claim 1 is it is characterised in that described adjust described pressure according to described aerofluxuss saturation temperature tc
The operation of contracting machine, so that the high-voltage operation process of described compressor is in normal operation range, comprising:
Obtain described compressor corresponding range of operation figure；
According to described range of operation figure, determine the range of operation curve in busy hour for this compressor；
The range of operation curve of the busy hour of determination is fitted, determines the high pressure critical curve side of described compressor
Journey；
According to described aerofluxuss saturation temperature tc and described high pressure critical curve equation, adjust the operation of described compressor.
3. by below equation, method according to claim 2 is it is characterised in that determine that the high pressure of described compressor is critical
Curvilinear equation:
Tc '=alpha+beta * (t0+ γ),
Wherein, tc ' is high voltage protective critical temperature, and t0 is the temperature being arrived according to the method for operation real-time detection of described air conditioning system
Value, when the method for operation of described air conditioning system is refrigeration, described t0 is heat exchange manifold temperature value, in described air conditioning system
When the method for operation is to heat, described t0 is defrost pipe temperature value, and α, γ are the range of operation according to compressor in busy hour
The temperature parameter that curve values corresponding saturation temperature matching determines, β is the Slope Parameters of the high pressure critical curve of matching.
4. method according to claim 3 it is characterised in that described according to described aerofluxuss saturation temperature tc and described high pressure
Critical curve equation, adjusts the operation of described compressor, comprising:
Step s1: judge the magnitude relationship of described aerofluxuss saturation temperature tc and described tc ', if aerofluxuss saturation temperature tc is not more than institute
State tc ', be not adjusted, if described aerofluxuss saturation temperature tc is more than described tc ', control described compressor to force to reduce present count
The frequency of value；
Step s2: after mandatory down low compression unit frequency preset time threshold, continue to judge described aerofluxuss saturation temperature tc and institute
State the magnitude relationship of tc ', if described aerofluxuss saturation temperature tc is still greater than described tc ', control described compressor to force reduction default
The frequency of numerical value；
Step s3: circulation above-mentioned steps s2, until after meeting default maintenance condition, controlling compressor to maintain the current method of operation.
5. method according to claim 4 is it is characterised in that after the described default maintenance condition up to satisfaction, control compression
Machine maintains the current method of operation, comprising:
After the number of times of mandatory down low compression unit frequency meets predetermined threshold value number of times, it is somebody's turn to do directly near for the frequency of described compressor
When the minimum running frequency of compressor is run, or, when described aerofluxuss saturation temperature tc is not more than described tc ', confirm
Meet described default maintenance condition.
6. method according to claim 1 is it is characterised in that determine described pressure at expulsion corresponding aerofluxuss saturation described
After temperature tc, also include:
Tc adjusts the operation of described compressor according to described aerofluxuss saturation temperature tc, so that the low pressure operation process of described compressor
It is in normal operation range.
7. method according to claim 1 is it is characterised in that described adjust described pressure according to described aerofluxuss saturation temperature tc
The operation of contracting machine, so that the low pressure operation process of described compressor is in normal operation range, comprising:
Obtain described compressor corresponding range of operation figure；
According to described range of operation figure, determine the range of operation curve in minimum load for this compressor；
Range of operation curve during the minimum load of determination is fitted, determines the low pressure critical curve side of described compressor
Journey；
According to described aerofluxuss saturation temperature tc and described low pressure critical curve equation, adjust the operation of described compressor.
8. by below equation, method according to claim 7 is it is characterised in that determine that the low pressure of described compressor is critical
Curvilinear equation:
Tc "=δ+ε * (t0+ η),
Wherein, tc " is low-voltage variation critical temperature, and t0 is the temperature being arrived according to the method for operation real-time detection of described air conditioning system
Value, when the method for operation of described air conditioning system is refrigeration, described t0 is heat exchange manifold temperature value, in described air conditioning system
When the method for operation is to heat, described t0 is defrost pipe temperature value, and δ, η are that the range of operation in minimum load is bent according to compressor
The temperature parameter that the corresponding saturation temperature matching of line value determines, ε is the Slope Parameters of the low pressure critical curve of matching.
9. method according to claim 8 it is characterised in that described according to described aerofluxuss saturation temperature tc and described low pressure
Critical curve equation, adjusts the operation of described compressor, comprising:
Judge described aerofluxuss saturation temperature tc and described tc " magnitude relationship, if described aerofluxuss saturation temperature tc be not less than described
Tc ", does not carry out action, if described aerofluxuss saturation temperature tc is less than described tc ", control the outer machine of air conditioning system to continue to run with, concurrently
Send information to machine in air conditioning system；
After sending information preset time threshold, continue to judge described aerofluxuss saturation temperature tc and described tc " size pass
System, if described aerofluxuss saturation temperature tc is still less than described tc ', continues to send information to machine in air conditioning system, until described
Aerofluxuss saturation temperature tc is not less than described tc ".
10. a kind of operating control device of air-conditioning compressor is it is characterised in that include:
First acquisition unit, for the real-time pressure at expulsion obtaining air-conditioning compressor air vent；
First determining unit, for determining described pressure at expulsion corresponding aerofluxuss saturation temperature tc；
High voltage protective unit, for adjusting the operation of described compressor according to described aerofluxuss saturation temperature tc, so that described compression
The high-voltage operation process of machine is in normal operation range.
11. devices according to claim 10 are it is characterised in that also include:
Tc low-voltage variation unit, for adjusting the operation of described compressor according to described aerofluxuss saturation temperature tc, so that described pressure
The low pressure operation process of contracting machine is in normal operation range.
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| CN108278713A (en) * | 2018-01-19 | 2018-07-13 | 珠海格力电器股份有限公司 | A kind of compress control method and device |
| CN108317073A (en) * | 2018-01-12 | 2018-07-24 | 特灵空调系统(中国)有限公司 | The control method and its control device of compressor, compressor |
| CN109236625A (en) * | 2018-08-30 | 2019-01-18 | 珠海格力电器股份有限公司 | Compressor control method, device and electrical equipment |
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| CN108317073A (en) * | 2018-01-12 | 2018-07-24 | 特灵空调系统(中国)有限公司 | The control method and its control device of compressor, compressor |
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| CN110986336A (en) * | 2019-11-28 | 2020-04-10 | 广东志高暖通设备股份有限公司 | Compressor frequency control method and device of air conditioning system |
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