CN105928280B - The guard method of cooler compressor and device - Google Patents
The guard method of cooler compressor and device Download PDFInfo
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- CN105928280B CN105928280B CN201610301820.3A CN201610301820A CN105928280B CN 105928280 B CN105928280 B CN 105928280B CN 201610301820 A CN201610301820 A CN 201610301820A CN 105928280 B CN105928280 B CN 105928280B
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- 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
-
- 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
- F25B2600/025—Compressor control by controlling speed
-
- 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
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- 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
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of guard methods of cooler compressor, comprising the following steps: obtains outdoor temperature and first object temperature；When outdoor temperature is less than first object temperature, control air conditioner enters compressor low-temperature protection state；Determine compressor protection operating parameter corresponding with the outdoor temperature and compressor protection runing time；In the protection runing time of compressor, according to the running frequency of the protection operating parameter adjustment compressor and/or the aperture of electric expansion valve.The invention also discloses a kind of protective devices of cooler compressor.The present invention controls the operating status of compressor according to outdoor temperature situation under low-temperature condition, and the amount to ensure compressor discharge lubricating oil and the amount for sucking lubricating oil remain basically stable, and guarantees there is enough lubricating oil in compressor.
Description
Technical field
The present invention relates to the guard method of air conditioner technical field more particularly to a kind of cooler compressor and devices.
Background technique
In daily life, air conditioner is a kind of electric appliance that people are commonly used, its adjustable indoor temperature and humidity.It is simple next
It says, air conditioner adjusts the process of heating are as follows: the gaseous coolant of normal temperature and pressure is compressed into the gaseous coolant of high temperature and pressure by compressor,
The gaseous coolant of high temperature and pressure is recycled to the liquid refrigerants that heat exchanger (being at this time condenser) heat release is liquefied as normal temperature high voltage, indoor
Air is heated, and the gaseous coolant that the liquid refrigerants evaporation of normal temperature high voltage is gasificated into normal temperature and pressure returns in compressor, is recycled
It back and forth carries out continuing heating.As it can be seen that compressor is the core component of air conditioner, and compressor is by rotatable parts and friction member structure
At being filled with lubricating oil in the mechanical parts such as compressor based on lubrication, sealing, cooling and the purpose of energy adjustment.
However, lubricating oil has floc point and freezing point, when lubricating oil is in the low temperature even state of ultralow temperature, flowing is slow
Slowly, at this point, lubricating oil largely spues from compressor and flows into outdoor unit if compressor normally starts operation according to normal temperature state
Condenser in, and the lubricating oil in condenser be since low temperature flow cannot slowly flow back to compressor in time, through after a period of time
Operation after, most lubricating oil can store within the condenser, but lubricate shortage of oil in compressor, and lubrication is inadequate.
When existing air conditioner cold-starting, compressor still normally starts operation according to normal temperature state, and lubricating oil is from compression
It largely spues in machine, the lubricating oil in the circulatory system cannot flow back to compressor in time, cause to lubricate shortage of oil in compressor, lubricate
Not enough, the performance and service life of compressor are influenced.
Above content is only used to facilitate the understanding of the technical scheme, and is not represented and is recognized that above content is existing skill
Art.
Summary of the invention
The main purpose of the present invention is to provide a kind of guard method of cooler compressor and devices, it is intended to solve existing
When air conditioner cold-starting, compressor still normally starts operation according to normal temperature state, and lubricating oil largely spues from compressor, follows
Lubricating oil in loop system cannot flow back to compressor in time, cause to lubricate shortage of oil in compressor, and lubrication not enough, influences compressor
Performance and service life the problem of.
To achieve the above object, the guard method of a kind of cooler compressor provided by the invention, comprising the following steps:
Obtain outdoor temperature and first object temperature；
When outdoor temperature is less than first object temperature, control air conditioner enters compressor low-temperature protection state；
Determine compressor protection operating parameter corresponding with the outdoor temperature and compressor protection runing time；
In the protection runing time of compressor, according to it is described protection operating parameter adjustment compressor running frequency and/
Or the aperture of electric expansion valve.
Preferably, the step of acquisition compressor protection runing time includes:
Determine compressor discharge capacity information and the corresponding discharge capacity correction time, and determine the corresponding temperature of the outdoor temperature
Correction time；
The compressor is calculated according to default calculation according to the discharge capacity correction time and the temperature adjustmemt time
Protection runing time.
Preferably, described when outdoor temperature is less than first object temperature, control air conditioner enters compressor low-temperature protection
After the step of state, further includes:
Obtain the delivery temperature and the second target temperature of compressor；
In compressor protection runing time, when delivery temperature is greater than the second target temperature, control air conditioner exits pressure
Contracting machine low-temperature protection state.
Preferably, after the step of delivery temperature and the second target temperature for obtaining compressor, further includes:
Obtain the runing time of compressor；
It is greater than protection runing time in the runing time of compressor, and when the delivery temperature is less than the second target temperature,
Issue prompt information.
Preferably, described when outdoor temperature is less than first object temperature, control air conditioner enters compressor low-temperature protection
After the step of state, further includes:
When air conditioner exits low-temperature protection state, and compressor is out of service, the compressor time out of service is obtained
And the object time；
When the compressor time out of service being greater than the object time, control air conditioner enters compressor low-temperature protection
State.
In addition, to achieve the above object, the present invention also provides a kind of protective devices of cooler compressor, comprising:
Temperature acquisition module, for obtaining outdoor temperature and first object temperature；
Block of state, for when outdoor temperature is less than first object temperature, control air conditioner to enter compressor low temperature guarantor
Shield state；
Parameter acquisition module, for determining that compressor protection operating parameter corresponding with the outdoor temperature and compressor are protected
Protect runing time；
Control module, for adjusting compressor according to the protection operating parameter in the protection runing time of compressor
Running frequency and/or electric expansion valve aperture.
Preferably, the parameter acquisition module includes:
Acquiring unit, for determine compressor discharge capacity information and the corresponding discharge capacity correction time, and determine the outdoor
The temperature corresponding temperature adjustmemt time；
Computing unit, by according to the discharge capacity correction time and the temperature adjustmemt time according to default calculation based on
Calculate the protection runing time of the compressor.
Preferably, the temperature acquisition module is also used to obtain the delivery temperature and the second target temperature of compressor；
The block of state is also used in compressor protection runing time, when delivery temperature is greater than the second target temperature
When, control air conditioner exits compressor low-temperature protection state.
Preferably, the protective device further include: time-obtaining module；
The time-obtaining module, for obtaining the runing time of compressor；
The control module is also used to be greater than protection runing time, and the delivery temperature in the runing time of compressor
When less than the second target temperature, prompt information is issued.
Preferably, the time-obtaining module is also used to exit low-temperature protection state when air conditioner, and compressor stops fortune
When row, compressor time and object time out of service are obtained；
The block of state is also used to control air-conditioning when the compressor time out of service being greater than the object time
Device enters compressor low-temperature protection state.
The present invention is by obtaining outdoor temperature and first object temperature；When outdoor temperature is less than first object temperature, control
Air conditioner processed enters compressor low-temperature protection state；Obtain compressor protection operating parameter corresponding with the outdoor temperature and pressure
Protecting compressor runing time；In the protection runing time of compressor, according to the fortune of the protection operating parameter adjustment compressor
The aperture of line frequency and/or electric expansion valve.Under low-temperature condition, the operation of compressor low speed is controlled according to outdoor temperature situation,
So that the amount of compressor discharge lubricating oil and the amount of sucking lubricating oil remain basically stable, guarantee there is enough lubricating oil in compressor.
Detailed description of the invention
Fig. 1 is the flow diagram of the first embodiment of the guard method of the air condition of that present invention compressor；
Fig. 2 is the flow diagram that one embodiment of the invention obtains compressor protection runing time；
Fig. 3 is the flow diagram of the second embodiment of the guard method of the air condition of that present invention compressor；
Fig. 4 is the flow diagram of the 3rd embodiment of the guard method of the air condition of that present invention compressor；
Fig. 5 is the flow diagram of the fourth embodiment of the guard method of the air condition of that present invention compressor；
Fig. 6 is the functional block diagram of the first embodiment of the protective device of the air condition of that present invention compressor；
Fig. 7 is the refinement the functional block diagram of one embodiment of parameter acquisition module in Fig. 6；
Fig. 8 is the functional block diagram of the second embodiment of the protective device of the air condition of that present invention compressor.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The primary solutions of the embodiment of the present invention are: obtaining outdoor temperature and first object temperature；When outdoor temperature is small
When first object temperature, control air conditioner enters compressor low-temperature protection state；Obtain pressure corresponding with the outdoor temperature
Protecting compressor operating parameter and compressor protection runing time；In the protection runing time of compressor, transported according to the protection
Row parameter adjusts the running frequency of compressor and/or the aperture of electric expansion valve.Under low-temperature condition, according to outdoor temperature situation
The operation of compressor low speed is controlled, so that the amount of compressor discharge lubricating oil and the amount of sucking lubricating oil remain basically stable, guarantees compression
There is enough lubricating oil in machine.
When due to existing air conditioner cold-starting, compressor still normally starts operation according to normal temperature state, and lubricating oil is from pressure
It largely spues in contracting machine, the lubricating oil in system cannot flow back to compressor in time, cause to lubricate shortage of oil in compressor, and lubrication is not
It is enough, influence the performance and service life of compressor.
Based on the above issues, the present invention provides a kind of guard method of cooler compressor.
Referring to Fig.1, Fig. 1 is the flow diagram of the first embodiment of the guard method of the air condition of that present invention compressor.
In one embodiment, the guard method of the cooler compressor includes:
Step S10 obtains outdoor temperature and first object temperature；
In the present embodiment, the air-conditioning includes the temperature sensor being mounted on air conditioner, it is preferable that by the temperature
Sensor is mounted on the condenser of outdoor unit, for detecting outdoor temperature.After air-conditioning opens the functions such as heating, first is obtained
Target temperature, and current outdoor temperature is obtained by temperature sensor, the first object temperature is that air conditioner is pre- when dispatching from the factory
The value of first object temperature can also be arranged by Air Conditioner Remote equipment or according to user by the first object temperature being first arranged, user
The value of first object temperature is constantly updated in instruction, for example, being -7 DEG C or -9 DEG C etc..
Step S20, when outdoor temperature is less than first object temperature, control air conditioner enters compressor low-temperature protection shape
State；
When getting outdoor temperature and first object temperature, outdoor temperature is compared with first object temperature, when
When outdoor temperature is less than first object temperature, indicates outdoor at this time and be in low-temperature condition, correspondingly, the lubricating oil in air conditioner
In low-temperature condition, mobility is poor, at this time if compressor is normally started by normal temperature state, the amount of compressor discharge lubricating oil
The amount of sucking lubricating oil will be substantially exceeded, after operation after a period of time, most lubricating oil can be stored within the condenser,
The lubrication shortage of oil in compressor is caused, lubrication not enough, influences the performance and service life of compressor.
Step S30, when determining that compressor protection operating parameter corresponding with the outdoor temperature and compressor protection are run
Between t；
Outdoor temperature is different, and compressor protection operating parameter and compressor protection runing time t would also vary from；Cause
This, will obtain compressor protection operating parameter corresponding with the outdoor temperature, and determine compressor protection runing time t, packet
Include the value range of the running frequency of compressor, the value range of electronic expansion valve opening and compressor protection runing time t
Duration controls the operating status of compressor accordingly.It therefore, should be according to outdoor temp when outdoor temperature is less than first object temperature
The operating status of situation control compressor is spent, is held substantially with the amount for guaranteeing compressor discharge lubricating oil and the amount for sucking lubricating oil
It is flat, guarantee there is enough lubricating oil in compressor, i.e. control air conditioner enters compressor low-temperature protection state.
Specifically, as shown in Fig. 2, Fig. 2 is the process signal that one embodiment of the invention obtains compressor protection runing time
Figure；The step of acquisition compressor protection runing time, includes: in the step S30
S301, determine compressor discharge capacity information and corresponding discharge capacity correction time a, and determine that the outdoor temperature is corresponding
Temperature adjustmemt time b；
According to compressor displacement V (for example, 10.8CC/R (arrange by CC/R expression milliliter/revolution, i.e. compressor of air conditioner every revolution
Gas volume out) and 18CC/R etc.) etc. differences, the corresponding discharge capacity correction time a of compressor is also different, and compressor displacement V is got over
Greatly, corresponding discharge capacity correction time a also can be longer；For example, the value of discharge capacity correction time a and compressor displacement V is at mapping relations,
The mapping relations can be monotonic function, be also possible to the curvilinear function for having limiting value, certainly, also can also be other types
Mapping relations；One embodiment is using k times of compressor displacement V value as discharge capacity correction time a, i.e. discharge capacity correction time a=k*
V；As previously mentioned, outdoor temperature is lower, compressor protection runing time t also can be longer, therefore, compressor protection runing time t
Setting the case where considering outdoor temperature, here, corresponding temperature adjustmemt time b is arranged according to different outdoor temperatures；Example
Such as, the value of temperature adjustmemt time b and outdoor temperature can be monotonic function, be also possible at mapping relations, the mapping relations
There is the curvilinear function of limiting value, certainly, also can also be other types of mapping relations；One embodiment outdoor temperature is -11 DEG C
At extremely -7 DEG C, temperature adjustmemt time b is 0~30 second, and outdoor temperature is -15 DEG C to -11 DEG C, and temperature adjustmemt time b is 90~120
Second, outdoor temperature is -17 DEG C to -15 DEG C, and temperature adjustmemt time b is 180~210 seconds.
S302, according to discharge capacity correction time a and temperature adjustmemt time b according to described in the calculating of default calculation
The protection runing time t of compressor.
Situations such as comprehensive compressor displacement V, outdoor temperature, calculates compressor protection runing time t, for example, when discharge capacity is corrected
Between a and compressor displacement V value at mapping relations, the value of temperature adjustmemt time b and outdoor temperature is at mapping relations, the mapping
Relationship can be monotonic function, be also possible to the curvilinear function for having limiting value, certainly, also can also be that other types of mapping is closed
System；One embodiment is then compressed using k times of compressor displacement V value as discharge capacity correction time a, i.e. discharge capacity correction time a=k*V
Machine protects runing time t=k*V+b；Specifically, in conjunction with foregoing teachings, an embodiment gives outdoor temperature and compressor protection
The mapping relations of operating parameter and temperature adjustmemt time b, as shown in table 1 below, wherein compressor protection operating parameter includes compression
Machine running frequency and electronic expansion valve opening.It is, of course, also possible to introduce foundation correction time d, foundation correction according to actual needs
Time d can be a constant value, be also possible to the value changed according to the actual situation, then compressor protection runing time t=k*V+b
+d。
The corresponding compressor protection operating parameter of 1. outdoor temperature of table and temperature adjustmemt time b
Step S40, in the protection runing time t of compressor, according to the fortune of the protection operating parameter adjustment compressor
The aperture of line frequency and/or electric expansion valve.
Compressor protection runing time t in, it is generally recognized that the temperature of lubricating oil is relatively low in compressor, mobility compared with
Difference, compressor should be maintained at the operation of smaller value state；During compressor is run, the reasons such as friction and electrical-coil energization are equal
Heat, which can be generated, increases compressor temperature, and when lubricating oil flows in compressor, absorbing the thermal temperature of compressor also can be with
Raising, still, when the condenser of lubrication oil circulation to outdoor unit, since outdoor temperature is lower, lubricating oil and outdoor air
It is transmitted in the presence of heat, energy loss is inevitable, and the temperature of lubricating oil can reduce again；It is therefore advantageous to the case where be compressor
Operating status not only guaranteed lubricating oil temperature can continue rise, but also guarantee compressor discharge lubricating oil amount and sucking lubricate
The amount of oil remains basically stable, therefore, in the protection runing time t of compressor, to be determined according to outdoor temperature and compressor displacement V etc.
Compressor protection operating parameter adjustment compressor operating frequency and electronic expansion valve opening.
The present embodiment by outdoor temperature be less than first object temperature when, in the protection runing time t of compressor, root
According to the running frequency of outdoor temperature situation adjustment compressor and/or the aperture of electric expansion valve, the temperature of lubricating oil both ensure that
It can continue to rise, and ensure that the amount of compressor discharge lubricating oil and the amount of sucking lubricating oil remain basically stable as far as possible, guarantee compression
There is enough lubricating oil in machine, avoid compressor not enough, influences the performance of compressor and use the longevity because lubricating shortage of oil, lubrication
The problem of life.
It is the flow diagram of the second embodiment of the guard method of the air condition of that present invention compressor referring to Fig. 3, Fig. 3.Base
After the first embodiment of the guard method of above-mentioned cooler compressor, the step S20, further includes:
Step S50 obtains the delivery temperature and the second target temperature of compressor；
During compressor is run, the reasons such as friction and electrical-coil energization, which can generate heat, makes compressor temperature liter
Height, when lubricating oil flows in compressor, the thermal temperature for absorbing compressor can also be increased, the exhaust outlet discharge of compressor
Be heated air inside compressor, the delivery temperature by detecting compressor can be obtained indirectly inside compressor
Temperature (temperature for being equivalent to the lubricating oil being recycled to inside compressor), therefore, when air conditioner enters compressor low-temperature protection
When state, the delivery temperature of compressor is obtained.
Step S60, when delivery temperature is greater than the second target temperature, controls air-conditioning in compressor protection runing time t
Device exits compressor low-temperature protection state.
Therefore the temperature that the delivery temperature of compressor can represent the lubricating oil being recycled to inside compressor indirectly works as pressure
When the delivery temperature of contracting machine is greater than the second target temperature, indicate that the lubricating oil temperature inside compressor is relatively high, Ke Yishun
Smooth recycles in the components such as compressor and condenser, and compressor, which runs at high speed, will not lead to lube oil retention within the condenser
Situation about cannot flow back in time in compressor occurs, and the state of lubricating oil has supported compressor according to function such as normal heatings at this time
Can run, if at this time still in compressor protection runing time t, can control air conditioner exit compressor low temperature protect
Shield state is run according to functions such as normal heatings, indoor temperature and humidity to be adjusted as early as possible.
The present embodiment is by the way that when delivery temperature is greater than the second target temperature, control air conditioner exits compressor low temperature in advance
Guard mode further improves the sound that indoor temperature and humidity is adjusted in air conditioner on the basis of guaranteeing compressor performance
Answer speed.
It is the flow diagram of the 3rd embodiment of the guard method of the air condition of that present invention compressor referring to Fig. 4, Fig. 4.Base
After the second embodiment of the guard method of above-mentioned cooler compressor, the step S50, further includes:
Step S70 obtains the runing time of compressor；
Step S80 is greater than protection runing time t in the runing time of compressor, and the delivery temperature is less than the second mesh
When marking temperature, prompt information is issued.
When air conditioner enters compressor low-temperature protection state, the runing time of recording compressed machine, the present invention determines
Protection runing time t, be guarantee compressor at most after having run protection runing time t, lubricating oil can smoothly exist
It recycles in the components such as compressor and condenser, if the runing time in compressor is greater than protection runing time t, and compressor
Delivery temperature is less than the second target temperature, then it represents that compressor internal lubrication oil is still not enough to smoothly in compressor and condenser
It is recycled in equal components；It may be that could not be obtained correctly because the temperature sensor for obtaining compressor exhaust temperature is out of order
Delivery temperature；It is also likely to be that the temperature sensor for obtaining outdoor temperature or compressor are out of order, makes the operation shape of compressor
State adjustment is improper, the temperature of lubricating oil could not be made to be promoted in the given time sufficiently high；It is of course also possible to be other reasons
The runing time of caused compressor is greater than protection runing time t, and the delivery temperature of compressor is still less than the second target temperature；
But regardless of reason, for the protection to air conditioner, prompt information should be all issued, user is prompted to examine air conditioner
It repairs to debug, it is, of course, also possible to forcibly close air conditioner after prompt information sending a period of time is arranged in.
The present embodiment is greater than protection runing time by the runing time in compressor, and the delivery temperature is less than second
When target temperature, prompt information is issued, there may be failures to prompt user's air conditioner, need maintenance down, avoid air conditioner band
Failure operation damages air-conditioning.
It is the flow diagram of the fourth embodiment of the guard method of the air condition of that present invention compressor referring to Fig. 5, Fig. 5.Base
After the 3rd embodiment of the guard method of above-mentioned cooler compressor, the step S20, further includes:
Step S90 obtains compressor and stops fortune when air conditioner exits low-temperature protection state, and compressor is out of service
The capable time and object time；
When air conditioner enters compressor low-temperature protection state, compressor is in low speed operation is continued, only in air-conditioning
After device exits low-temperature protection state, the states such as heating set before being terminated according to low-temperature protection state are operated normally, and compressor is
It will appear intermittent start and stop operation；By taking air conditioner heat-production as an example, when air conditioner runs a period of time, room temperature approaches setting
When target temperature, compressor will be out of service, and when temperature is lower than the target temperature a certain range being arranged indoors, compressor will be opened
Begin to run, therefore, when operating normally with states such as heatings, compressor is that intermittent start and stop are run；And compressor it is out of service when,
The lubricating oil in outdoor condenser is rested on, since outdoor temperature is lower, lubricating oil and outdoor air have heat transmitting, energy
Loss is inevitable, and the temperature of lubricating oil can reduce again, if the overlong time that compressor is out of service, may cause profit
Lubricating oil is in low-temperature condition again, and mobility is poor, and at this time if compressor is normally started by normal temperature state, compressor, which spues, to be lubricated
The amount of oil will be greater than the amount of sucking lubricating oil, and after operation after a period of time, most lubricating oil can be stored in condenser
In, shortage of oil is but lubricated in compressor, lubrication not enough, influences the performance and service life of compressor, therefore compressor, to obtain
Object time out of service, and monitor the compressor time out of service.
Step S100, when the compressor time out of service being greater than the object time, control air conditioner enters compression
Machine low-temperature protection state.
When the compressor time out of service being greater than the object time, indicate that lubricating oil is in low-temperature condition, mobility again
It is poor, air conditioner should be controlled at this time and enters compressor low-temperature protection state, to avoid because of compressor overlong time out of service, stopped
The lubricating oil stayed in outdoor condenser is in low-temperature condition again, and mobility is poor, and compressor is normally started by normal temperature state,
The amount of compressor discharge lubricating oil will be greater than the amount of sucking lubricating oil, after operation after a period of time, most lubricating oil
It can store within the condenser, shortage of oil is but lubricated in compressor, lubrication not enough, influences the performance of compressor and asking for service life
Topic.
The present embodiment is by being greater than target when the compressor time out of service after air conditioner exits low-temperature protection state
When the time, control air conditioner enters compressor low-temperature protection state；To avoid because of compressor overlong time out of service, rest on
Lubricating oil in outdoor condenser is in low-temperature condition again, and mobility is poor, and compressor can after normally starting by normal temperature state
The problem of compressor can be damaged.
In order to better illustrate the protection scheme of above-mentioned cooler compressor, to be configured with discharge capacity as 10.8CC/R compressor
Air conditioner for, pass through 3 examples and carry out specific explanations.
Example one:
Air conditioner starts heat-production functions, obtains outdoor temperature and first object temperature by temperature sensor, for example, setting
First object temperature be -7 DEG C, when the outdoor temperature of acquisition be -9 DEG C when, due to outdoor temperature be less than first object temperature, then
Control air conditioner enters compressor low-temperature protection state；Obtain compressor protection operating parameter corresponding with outdoor temperature and compression
Machine protects runing time t, compressor protection runing time t=k*V+b+d, and choosing k is 3, and foundation correction time d is 420 seconds, then
According to table 1, ≈ 483 seconds compressor protection runing time t=3*10.8+30+420=482.4 seconds (rounding up), compression
Machine running frequency is 45~55Hz, and electronic expansion valve opening is 180~220 steps, in the protection runing time t=483 of compressor
In second, the running frequency for adjusting compressor is in 45~55Hz and/or the aperture of electric expansion valve is in 180~220 steps, to protect
The temperature for demonstrate,proving lubricating oil can continue to rise, while the amount of compressor discharge lubricating oil and the amount of sucking lubricating oil remain basically stable.
Example two:
Air conditioner starts heat-production functions, obtains outdoor temperature and first object temperature by temperature sensor, for example, setting
First object temperature be -7 DEG C, when the outdoor temperature of acquisition be -9 DEG C when, due to outdoor temperature be less than first object temperature, then
Control air conditioner enters compressor low-temperature protection state；Obtain compressor protection operating parameter corresponding with outdoor temperature and compression
Machine protects runing time t, compressor protection runing time t=k*V+b+d, and choosing k is 3, and foundation correction time d is 420 seconds, then
According to table 1, ≈ 483 seconds compressor protection runing time t=3*10.8+30+420=482.4 seconds (rounding up), compression
Machine running frequency is 45~55Hz, and electronic expansion valve opening is 180~220 steps, in the protection runing time t=483 of compressor
In second, the running frequency for adjusting compressor is in 45~55Hz and/or the aperture of electric expansion valve is in 180~220 steps, to protect
The temperature for demonstrate,proving lubricating oil can continue to rise, while the amount of compressor discharge lubricating oil and the amount of sucking lubricating oil remain basically stable.
When air conditioner enters compressor low-temperature protection state, the second target temperature is obtained, and synchronize the row to compressor
Temperature degree is detected, for example, the second target temperature of setting is 35 DEG C, when the delivery temperature of acquisition is 28 DEG C, keeps pressure
The running frequency of contracting machine is in 45~55Hz and/or the aperture of electric expansion valve is in 180~220 steps；When the exhaust temperature of acquisition
When degree is 36 DEG C, since delivery temperature is greater than the second target temperature, then controls air conditioner and exit compressor low-temperature protection state, and
The heating working condition that control air conditioner is set before being terminated according to low-temperature protection state is run, and is heated.
Example three:
Air conditioner starts heat-production functions, obtains outdoor temperature and first object temperature by temperature sensor, for example, setting
First object temperature be -7 DEG C, when the outdoor temperature of acquisition be -9 DEG C when, due to outdoor temperature be less than first object temperature, then
Control air conditioner enters compressor low-temperature protection state；Obtain compressor protection operating parameter corresponding with outdoor temperature and compression
Machine protects runing time t, compressor protection runing time t=k*V+b+d, and choosing k is 3, and foundation correction time d is 420 seconds, then
According to table 1, ≈ 483 seconds compressor protection runing time t=3*10.8+30+420=482.4 seconds (rounding up), compression
Machine running frequency is 45~55Hz, and electronic expansion valve opening is 180~220 steps, in the protection runing time t=483 of compressor
In second, the running frequency for adjusting compressor is in 45~55Hz and/or the aperture of electric expansion valve is in 180~220 steps, to protect
The temperature for demonstrate,proving lubricating oil can continue to rise, while the amount of compressor discharge lubricating oil and the amount of sucking lubricating oil remain basically stable.
When air conditioner enters compressor low-temperature protection state, the second target temperature is obtained, and synchronize the row to compressor
Temperature degree is detected, for example, the second target temperature of setting is 35 DEG C, when the delivery temperature of acquisition is 28 DEG C, keeps pressure
The running frequency of contracting machine is in 45~55Hz and/or the aperture of electric expansion valve is in 180~220 steps；When the exhaust temperature of acquisition
When degree is 36 DEG C, since delivery temperature is greater than the second target temperature, then controls air conditioner and exit compressor low-temperature protection state, and
The heating working condition that control air conditioner is set before being terminated according to low-temperature protection state is run, and is heated.
After air conditioner heat-production runs a period of time, room temperature has reached the target temperature of setting, for example, target temperature
It is 20 DEG C, when room temperature reaches 20 DEG C, compressor is out of service, obtains the compressor object time out of service, simultaneously
The compressor time out of service is monitored, for example, the object time is 30 seconds, when the compressor time out of service is 25 seconds,
Compressor starts operation again, and compressor is run according to the state that room temperature heats at this time；After compressor runs a period of time, stop again
It only works, when the compressor time out of service is 32 seconds, compressor starts operation again, at this point, since compressor stops transporting
The capable time is greater than the object time, and lubricating oil may be in low-temperature condition again, then control air conditioner and enter compressor low-temperature protection
State obtains outdoor temperature, and the running frequency and/or electronic expansion valve opening of compressor are adjusted according to outdoor temperature situation.
The executing subject of the guard method of the cooler compressor of above-mentioned first to fourth embodiment all can be air-conditioning or
The electronic equipment being connect with AIR COND SIG Air Conditioner Singnal.Further, the guard method of the cooler compressor can be by being mounted on air-conditioning
Or the client compressor of air conditioner protection control program on electronic equipment is realized, wherein the electronic equipment includes but is not limited to
Mobile phone, pad, laptop etc..
The present invention further provides a kind of protective devices of cooler compressor.
Referring to the functional module signal that Fig. 6, Fig. 6 are the first embodiment of the protective device of the air condition of that present invention compressor
Figure.
In one embodiment, the protective device of the cooler compressor includes: temperature acquisition module 10, block of state
20, parameter acquisition module 30 and control module 40.
The temperature acquisition module 10, for obtaining outdoor temperature and first object temperature；
In the present embodiment, the air-conditioning includes the temperature sensor being mounted on air conditioner, it is preferable that by the temperature
Sensor is mounted on the condenser of outdoor unit, for detecting outdoor temperature.After air-conditioning opens the functions such as heating, first is obtained
Target temperature, and current outdoor temperature is obtained by temperature sensor, the first object temperature is that air conditioner is pre- when dispatching from the factory
The value of first object temperature can also be arranged by Air Conditioner Remote equipment or according to user by the first object temperature being first arranged, user
The value of first object temperature is constantly updated in instruction, for example, being -7 DEG C or -9 DEG C etc..
The block of state 20, for when outdoor temperature is less than first object temperature, control air conditioner to enter compressor
Low-temperature protection state；
When getting outdoor temperature and first object temperature, outdoor temperature is compared with first object temperature, when
When outdoor temperature is less than first object temperature, indicates outdoor at this time and be in low-temperature condition, correspondingly, the lubricating oil in air conditioner
In low-temperature condition, mobility is poor, at this time if compressor is normally started by normal temperature state, the amount of compressor discharge lubricating oil
The amount of sucking lubricating oil will be substantially exceeded, after operation after a period of time, most lubricating oil can be stored within the condenser,
The lubrication shortage of oil in compressor is caused, lubrication not enough, influences the performance and service life of compressor.
The parameter acquisition module 30, for determining compressor protection operating parameter corresponding with the outdoor temperature and pressure
Protecting compressor runing time t；
Outdoor temperature is different, and compressor protection operating parameter and compressor protection runing time t would also vary from；Cause
This, will obtain compressor protection operating parameter corresponding with the outdoor temperature, and determine compressor protection runing time t, packet
Include the value range of the running frequency of compressor, the value range of electronic expansion valve opening and compressor protection runing time t
Duration controls the operating status of compressor accordingly.It therefore, should be according to outdoor temp when outdoor temperature is less than first object temperature
The operating status of situation control compressor is spent, is held substantially with the amount for guaranteeing compressor discharge lubricating oil and the amount for sucking lubricating oil
It is flat, guarantee there is enough lubricating oil in compressor, i.e. control air conditioner enters compressor low-temperature protection state.
Specifically, as shown in fig. 7, the refinement functional module that Fig. 7 is 30 1 embodiment of parameter acquisition module of the present invention is illustrated
Figure；The parameter acquisition module 30 includes:
Acquiring unit 301, for determine compressor discharge capacity information and corresponding discharge capacity correction time a, and determine described in
The corresponding temperature adjustmemt time b of outdoor temperature；
According to compressor displacement V (for example, 10.8CC/R (arrange by CC/R expression milliliter/revolution, i.e. compressor of air conditioner every revolution
Gas volume out) and 18CC/R etc.) etc. differences, the corresponding discharge capacity correction time a of compressor is also different, and compressor displacement V is got over
Greatly, corresponding discharge capacity correction time a also can be longer；For example, the value of discharge capacity correction time a and compressor displacement V is at mapping relations,
The mapping relations can be monotonic function, be also possible to the curvilinear function for having limiting value, certainly, also can also be other types
Mapping relations；One embodiment is using k times of compressor displacement V value as discharge capacity correction time a, i.e. discharge capacity correction time a=k*
V；As previously mentioned, outdoor temperature is lower, compressor protection runing time t also can be longer, therefore, compressor protection runing time t
Setting the case where considering outdoor temperature, here, corresponding temperature adjustmemt time b is arranged according to different outdoor temperatures；Example
Such as, the value of temperature adjustmemt time b and outdoor temperature can be monotonic function, be also possible at mapping relations, the mapping relations
There is the curvilinear function of limiting value, certainly, also can also be other types of mapping relations；One embodiment outdoor temperature is -11 DEG C
At extremely -7 DEG C, temperature adjustmemt time b is 0~30 second, and outdoor temperature is -15 DEG C to -11 DEG C, and temperature adjustmemt time b is 90~120
Second, outdoor temperature is -17 DEG C to -15 DEG C, and temperature adjustmemt time b is 180~210 seconds.
Computing unit 302 is used for according to discharge capacity correction time a and temperature adjustmemt time b according to default calculating
Mode calculates the protection runing time t of the compressor.
Situations such as comprehensive compressor displacement V, outdoor temperature, calculates compressor protection runing time t, for example, when discharge capacity is corrected
Between a and compressor displacement V value at mapping relations, the value of temperature adjustmemt time b and outdoor temperature is at mapping relations, the mapping
Relationship can be monotonic function, be also possible to the curvilinear function for having limiting value, certainly, also can also be that other types of mapping is closed
System；One embodiment is then compressed using k times of compressor displacement V value as discharge capacity correction time a, i.e. discharge capacity correction time a=k*V
Machine protects runing time t=k*V+b；Specifically, in conjunction with foregoing teachings, an embodiment gives outdoor temperature and compressor protection
The mapping relations of operating parameter and temperature adjustmemt time b, as shown in table 1 below, wherein compressor protection operating parameter includes compression
Machine running frequency and electronic expansion valve opening.It is, of course, also possible to introduce foundation correction time d, foundation correction according to actual needs
Time d can be a constant value, be also possible to the value changed according to the actual situation, then compressor protection runing time t=k*V+b
+d。
The corresponding compressor protection operating parameter of 1. outdoor temperature of table and temperature adjustmemt time b
The control module 40, for being adjusted according to the protection operating parameter in the protection runing time t of compressor
The running frequency of compressor and/or the aperture of electric expansion valve.
Compressor protection runing time t in, it is generally recognized that the temperature of lubricating oil is relatively low in compressor, mobility compared with
Difference, compressor should be maintained at the operation of smaller value state；During compressor is run, the reasons such as friction and electrical-coil energization are equal
Heat, which can be generated, increases compressor temperature, and when lubricating oil flows in compressor, absorbing the thermal temperature of compressor also can be with
Raising, still, when the condenser of lubrication oil circulation to outdoor unit, since outdoor temperature is lower, lubricating oil and outdoor air
It is transmitted in the presence of heat, energy loss is inevitable, and the temperature of lubricating oil can reduce again；It is therefore advantageous to the case where be compressor
Operating status not only guaranteed lubricating oil temperature can continue rise, but also guarantee compressor discharge lubricating oil amount and sucking lubricate
The amount of oil remains basically stable, therefore, in the protection runing time t of compressor, to be determined according to outdoor temperature and compressor displacement V etc.
Compressor protection operating parameter adjustment compressor operating frequency and electronic expansion valve opening.
The present embodiment by outdoor temperature be less than first object temperature when, in the protection runing time t of compressor, root
According to the running frequency of outdoor temperature situation adjustment compressor and/or the aperture of electric expansion valve, the temperature of lubricating oil both ensure that
It can continue to rise, and ensure that the amount of compressor discharge lubricating oil and the amount of sucking lubricating oil remain basically stable as far as possible, guarantee compression
There is enough lubricating oil in machine, avoid compressor not enough, influences the performance of compressor and use the longevity because lubricating shortage of oil, lubrication
The problem of life.
Further, the temperature acquisition module 10 is also used to obtain the delivery temperature and the second target temperature of compressor；
During compressor is run, the reasons such as friction and electrical-coil energization, which can generate heat, makes compressor temperature liter
Height, when lubricating oil flows in compressor, the thermal temperature for absorbing compressor can also be increased, the exhaust outlet discharge of compressor
Be heated air inside compressor, the delivery temperature by detecting compressor can be obtained indirectly inside compressor
Temperature (temperature for being equivalent to the lubricating oil being recycled to inside compressor), therefore, when air conditioner enters compressor low-temperature protection
When state, the delivery temperature of compressor is obtained.
The block of state 20 is also used in compressor protection runing time t, when delivery temperature is greater than the second target temperature
When spending, control air conditioner exits compressor low-temperature protection state.
Therefore the temperature that the delivery temperature of compressor can represent the lubricating oil being recycled to inside compressor indirectly works as pressure
When the delivery temperature of contracting machine is greater than the second target temperature, indicate that the lubricating oil temperature inside compressor is relatively high, Ke Yishun
Smooth recycles in the components such as compressor and condenser, and compressor, which runs at high speed, will not lead to lube oil retention within the condenser
Situation about cannot flow back in time in compressor occurs, and the state of lubricating oil has supported compressor according to function such as normal heatings at this time
Can run, if at this time still in compressor protection runing time t, can control air conditioner exit compressor low temperature protect
Shield state is run according to functions such as normal heatings, indoor temperature and humidity to be adjusted as early as possible.
The present embodiment is by the way that when delivery temperature is greater than the second target temperature, control air conditioner exits compressor low temperature in advance
Guard mode further improves the sound that indoor temperature and humidity is adjusted in air conditioner on the basis of guaranteeing compressor performance
Answer speed.
Referring to the functional module signal that Fig. 8, Fig. 8 are the second embodiment of the protective device of the air condition of that present invention compressor
Figure.The protective device further includes time-obtaining module 50.
The time-obtaining module 50, for obtaining the runing time of compressor；
The control module 40 is also used to be greater than protection runing time t, and exhaust temperature in the runing time of compressor
When degree is less than the second target temperature, prompt information is issued.
When air conditioner enters compressor low-temperature protection state, the runing time of recording compressed machine, the present invention determines
Protection runing time t, be guarantee compressor at most after having run protection runing time t, lubricating oil can smoothly exist
It recycles in the components such as compressor and condenser, if the runing time in compressor is greater than protection runing time t, and compressor
Delivery temperature is less than the second target temperature, then it represents that compressor internal lubrication oil is still not enough to smoothly in compressor and condenser
It is recycled in equal components；It may be that could not be obtained correctly because the temperature sensor for obtaining compressor exhaust temperature is out of order
Delivery temperature；It is also likely to be that the temperature sensor for obtaining outdoor temperature or compressor are out of order, makes the operation shape of compressor
State adjustment is improper, the temperature of lubricating oil could not be made to be promoted in the given time sufficiently high；It is of course also possible to be other reasons
The runing time of caused compressor is greater than protection runing time t, and the delivery temperature of compressor is still less than the second target temperature；
But regardless of reason, for the protection to air conditioner, prompt information should be all issued, user is prompted to examine air conditioner
It repairs to debug, it is, of course, also possible to forcibly close air conditioner after prompt information sending a period of time is arranged in.
The present embodiment is greater than protection runing time by the runing time in compressor, and the delivery temperature is less than second
When target temperature, prompt information is issued, there may be failures to prompt user's air conditioner, need maintenance down, avoid air conditioner band
Failure operation damages air-conditioning.
Further, the time-obtaining module 50 is also used to exit low-temperature protection state when air conditioner, and compressor stops
When only running, compressor time and object time out of service are obtained；
When air conditioner enters compressor low-temperature protection state, compressor is in low speed operation is continued, only in air-conditioning
After device exits low-temperature protection state, the states such as heating set before being terminated according to low-temperature protection state are operated normally, and compressor is
It will appear intermittent start and stop operation；By taking air conditioner heat-production as an example, when air conditioner runs a period of time, room temperature approaches setting
When target temperature, compressor will be out of service, and when temperature is lower than the target temperature a certain range being arranged indoors, compressor will be opened
Begin to run, therefore, when operating normally with states such as heatings, compressor is that intermittent start and stop are run；And compressor it is out of service when,
The lubricating oil in outdoor condenser is rested on, since outdoor temperature is lower, lubricating oil and outdoor air have heat transmitting, energy
Loss is inevitable, and the temperature of lubricating oil can reduce again, if the overlong time that compressor is out of service, may cause profit
Lubricating oil is in low-temperature condition again, and mobility is poor, and at this time if compressor is normally started by normal temperature state, compressor, which spues, to be lubricated
The amount of oil will be greater than the amount of sucking lubricating oil, and after operation after a period of time, most lubricating oil can be stored in condenser
In, shortage of oil is but lubricated in compressor, lubrication not enough, influences the performance and service life of compressor, therefore compressor, to obtain
Object time out of service, and monitor the compressor time out of service.
The block of state 20 is also used to when the compressor time out of service being greater than the object time, and control is empty
Device is adjusted to enter compressor low-temperature protection state.
When the compressor time out of service being greater than the object time, indicate that lubricating oil is in low-temperature condition, mobility again
It is poor, air conditioner should be controlled at this time and enters compressor low-temperature protection state, to avoid because of compressor overlong time out of service, stopped
The lubricating oil stayed in outdoor condenser is in low-temperature condition again, and mobility is poor, and compressor is normally started by normal temperature state,
The amount of compressor discharge lubricating oil will be greater than the amount of sucking lubricating oil, after operation after a period of time, most lubricating oil
It can store within the condenser, shortage of oil is but lubricated in compressor, lubrication not enough, influences the performance of compressor and asking for service life
Topic.
The present embodiment is by being greater than target when the compressor time out of service after air conditioner exits low-temperature protection state
When the time, control air conditioner enters compressor low-temperature protection state；To avoid because of compressor overlong time out of service, rest on
Lubricating oil in outdoor condenser is in low-temperature condition again, and mobility is poor, and compressor can after normally starting by normal temperature state
The problem of compressor can be damaged.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of guard method of cooler compressor, which comprises the following steps:
Obtain outdoor temperature and first object temperature；
When outdoor temperature is less than first object temperature, control air conditioner enters compressor low-temperature protection state；
Determine compressor protection operating parameter corresponding with the outdoor temperature and compressor protection runing time；
It is swollen according to the running frequency of the protection operating parameter adjustment compressor and electronics in the protection runing time of compressor
The aperture of swollen valve；
Determine compressor discharge capacity information and the corresponding discharge capacity correction time, and determine the corresponding temperature adjustmemt of the outdoor temperature
Time；
The guarantor of the compressor is calculated according to default calculation according to the discharge capacity correction time and the temperature adjustmemt time
Protect runing time.
2. the guard method of cooler compressor as described in claim 1, which is characterized in that described when outdoor temperature is less than the
When one target temperature, after control air conditioner the step of entering compressor low-temperature protection state, further includes:
Obtain the delivery temperature and the second target temperature of compressor；
In compressor protection runing time, when delivery temperature is greater than the second target temperature, control air conditioner exits compressor
Low-temperature protection state.
3. the guard method of cooler compressor as claimed in claim 2, which is characterized in that the exhaust for obtaining compressor
After the step of temperature and the second target temperature, further includes:
Obtain the runing time of compressor；
It is greater than protection runing time in the runing time of compressor, and when the delivery temperature is less than the second target temperature, issues
Prompt information.
4. the guard method of cooler compressor as claimed any one in claims 1 to 3, which is characterized in that described to work as room
When outer temperature is less than first object temperature, after control air conditioner the step of entering compressor low-temperature protection state, further includes:
When air conditioner exits low-temperature protection state, and compressor is out of service, compressor time and mesh out of service are obtained
Mark the time；
When the compressor time out of service being greater than the object time, control air conditioner enters compressor low-temperature protection shape
State.
5. a kind of protective device of cooler compressor characterized by comprising
Temperature acquisition module, for obtaining outdoor temperature and first object temperature；
Block of state, for when outdoor temperature is less than first object temperature, control air conditioner to enter compressor low-temperature protection shape
State；
Parameter acquisition module, for determining compressor protection operating parameter corresponding with the outdoor temperature and compressor protection fortune
The row time；
Control module, for adjusting the fortune of compressor according to the protection operating parameter in the protection runing time of compressor
The aperture of line frequency and electric expansion valve；
Acquiring unit, for determine compressor discharge capacity information and the corresponding discharge capacity correction time, and determine the outdoor temperature
The corresponding temperature adjustmemt time；
Computing unit, for calculating institute according to default calculation according to the discharge capacity correction time and the temperature adjustmemt time
State the protection runing time of compressor.
6. the protective device of cooler compressor as claimed in claim 5, which is characterized in that
The temperature acquisition module is also used to obtain the delivery temperature and the second target temperature of compressor；
The block of state is also used in compressor protection runing time, when delivery temperature is greater than the second target temperature, control
Air conditioner processed exits compressor low-temperature protection state.
7. the protective device of cooler compressor as claimed in claim 6, which is characterized in that the protective device further include:
Time-obtaining module；
The time-obtaining module, for obtaining the runing time of compressor；
The control module is also used to be greater than protection runing time in the runing time of compressor, and the delivery temperature is less than
When the second target temperature, prompt information is issued.
8. the protective device of the cooler compressor as described in any one of claim 5 to 7, which is characterized in that
The time-obtaining module is also used to exit low-temperature protection state when air conditioner, and when compressor is out of service, obtains pressure
Contracting machine time and object time out of service；
The block of state, be also used to the compressor time out of service be greater than the object time when, control air conditioner into
Enter compressor low-temperature protection state.
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| CN105258416A (en) * | 2015-10-09 | 2016-01-20 | 珠海格力电器股份有限公司 | Control method, control device and control system for initial opening degree of electronic expansion valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3978821A4 (en) * | 2019-05-29 | 2022-07-13 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Low-temperature heating activation control method for air conditioner, and air conditioner |
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