CN105570987A - Air conditioning system and oil blockage treatment method and treatment device of air conditioning system - Google Patents

Air conditioning system and oil blockage treatment method and treatment device of air conditioning system Download PDF

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Publication number
CN105570987A
CN105570987A CN201511034158.1A CN201511034158A CN105570987A CN 105570987 A CN105570987 A CN 105570987A CN 201511034158 A CN201511034158 A CN 201511034158A CN 105570987 A CN105570987 A CN 105570987A
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China
Prior art keywords
conditioning system
air
stifled
oil
heater
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Granted
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CN201511034158.1A
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Chinese (zh)
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CN105570987B (en
Inventor
刘旭
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Priority to CN201511034158.1A priority Critical patent/CN105570987B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—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
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • 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
    • F24F11/32—Responding to malfunctions or emergencies
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention proposes an air conditioning system, an oil blockage treatment method of the air conditioning system and an oil blockage treatment device of the air conditioning system. A refrigerant used by the air conditioning system is a combustible refrigerant; and the treatment method is used for the air conditioning system, and comprises the steps of: starting a heating device arranged in the place of a throttling device when detecting that the air conditioning system in a preset working state generates oil blockage; counting first operation time of the heating device in a working state; detecting if the air conditioning system generates the oil blockage when the first operation time reaches first preset time; and performing corresponding treatment according to the detecting result. The treatment method can timely and effectively solve the oil blockage problem to enable the air conditioning system to recover normal operation so as to prevent the capacity attenuation phenomenon of the air conditioning system caused by the oil blockage, guarantees the service life of a compressor and the air conditioning system, improves the use comfort of the air conditioning system, and promotes the user experience.

Description

The processing method that air-conditioning system, air-conditioning system oil is stifled and treating apparatus
Technical field
The present invention relates to air-conditioning technical field, the treating apparatus that the processing method of blocking up in particular to a kind of air-conditioning system, a kind of air-conditioning system oil and a kind of air-conditioning system oil block up.
Background technology
At present, in technical field of air conditioner refrigeration, most use R410a cold-producing medium carrys out alternative R22 cold-producing medium, it is with the obvious advantage is embodied on convertible frequency air-conditioner, but it is because the GWP (GlobalWarmingPotential, global warming potential) of R410a cold-producing medium is higher, day by day serious at Present Global greenhouse effects, under the background of countries in the world reply global climate transition pay attention to day by day, will be eliminated gradually.Therefore, the low GWP cold-producing medium that more absorbed research is at present representative with R32 cold-producing medium, R290 cold-producing medium, particularly for this cold-producing medium almost not having any pollution of R290 cold-producing medium, simultaneously, the research and development of corresponding compressor are also underway, particularly the lubricating oil research and development of new type compressor, come into one's own day by day.
The normal operation of lubricating oil in cooler compressor to system is extremely important, and lubricating oil plays a part cylinder and rotor lubrication, sealing and cooling.When compressor runs well, lubricating oil sucks cylinder by bent axle bottom compressor, cold-producing medium with HTHP after overcompression enters system, afterwards along with refrigerant circulation is got back to bottom compressor again, simultaneously the heat that produces of compressor electric motor and cylinder also can cooled dose and lubricating oil be taken away.If cause oil return return-air not smooth for some reason, the problems such as compressor lubrication shortage of oil, motor idle running heating will be caused, will causing further weares and teares between compresser cylinder and rotor strengthens, internal temperature is too high, finally causes burn-down of electric motor, system crash.So when system, must ensure that lubricating oil can normally return compressor and motor heat is discharged timely.
But, for combustible refrigerant-R290 cold-producing medium, its viscosity can sharply increase at low temperatures, particularly in changes in temperature frequency changer, when terminating cross valve commutation when defrosting, super low temperature refrigeration agent in evaporimeter (indoor heat exchanger) and lubricating oil need by throttling arrangement (such as, electric expansion valve) enter condenser (outdoor heat exchanger), simultaneously combustible refrigerant because of security consideration charging amount less, therefore the pressure ratio R410a cold-producing medium of air-conditioning system, the pressure of the air-conditioning system of R32 cold-producing medium is much little, thus the oil that ratio of viscosities can be caused larger blocking throttling arrangement, cause combustible refrigerant cannot participate in circulation, and then compressor is dallied, ability and operate power decline, system oil starvation lacks fluorine, the motor excessive heating of compressor after long time running, greatly reduce the service life of compressor and system, the use sense affecting user is subject to, the appearance of this problem is simultaneously also for design uses the air-conditioning system of combustible refrigerant to cause very large impact.
Therefore, how air-conditioning system occur oil stifled time, solving the stifled problem of oil timely and effectively makes air-conditioning system recover to run well, and then avoid air-conditioning system to occur the phenomenon that ability decays because oil blocks up, to ensure the service life of compressor and air-conditioning system, improve the comfort of air-conditioning system simultaneously, become technical problem urgently to be resolved hurrily.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art or correlation technique.
For this reason, one object of the present invention is to propose a kind of air-conditioning system.
Another object of the present invention is to propose the stifled processing method of a kind of air-conditioning system oil.
Another object of the present invention is to propose the stifled treating apparatus of a kind of air-conditioning system oil.
For realizing at least one object above-mentioned, embodiment according to a first aspect of the invention, propose a kind of air-conditioning system, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, and described air-conditioning system comprises: circulate compressor, cross valve, outdoor heat exchanger, throttling arrangement and indoor heat exchanger successively that be communicated with; Described throttling arrangement place is provided with heater.
The air-conditioning system that the embodiment of first aspect present invention provides, comprise the compressor circulating successively and be communicated with, cross valve, outdoor heat exchanger, throttling arrangement and indoor heat exchanger, wherein, throttling arrangement place is provided with heater, so, can control whether to open and the heater arranging throttling arrangement place according to using whether oily the blocking up of the air-conditioning system of combustible refrigerant, air-conditioning system is made to recover to run well to solve the stifled problem of oil timely and effectively, and then avoid air-conditioning system to occur the phenomenon that ability decays because oil blocks up, to ensure the service life of compressor and air-conditioning system, improve the comfort of air-conditioning system simultaneously, promote Consumer's Experience.
In addition, the air-conditioning system in above-described embodiment provided by the invention, can also have following additional technical feature:
In technique scheme, preferably, described heater specifically for: when described air-conditioning system default operating condition issue oil generation block up time, heat described throttling arrangement, to make described combustible refrigerant through described throttling arrangement at described air-conditioning system Inner eycle; And described heater is anti-explosion heating band.
In this technical scheme, when the default operating condition of air-conditioning system issue oil generation block up time, can be then throttling arrangement heating by opening the heater being arranged on throttling arrangement place, and then the combustible refrigerant in air-conditioning system and compressor lubricant oil can be made to circulate through this throttling arrangement smooth circulation in air-conditioning system, effectively to ensure air-conditioning system reliability of operation, and guarantee the service life of product, wherein, heater can be preferably anti-explosion heating band.
Embodiment according to a second aspect of the invention, propose the processing method that a kind of air-conditioning system oil is stifled, for the air-conditioning system as above described in any embodiment, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, then the treating method comprises: when detecting that oily blocking up occurs the described air-conditioning system being in default operating condition, open the described heater being arranged on described throttling arrangement place; Add up described heater and open the first in running order running time; When reaching the first Preset Time described first running time, detecting described air-conditioning system and whether occurring oily stifled, to process accordingly according to testing result.
The processing method that the air-conditioning system oil that the embodiment of second aspect present invention provides is stifled, when detecting that the air-conditioning system generation oil being in the duty that easily generation oil is stifled of use combustible refrigerant blocks up, the oil then needing start treatment strategy to solve air-conditioning system timely and effectively blocks up problem, air-conditioning system is made to recover to run well, and then avoid air-conditioning system to occur the phenomenon that ability decays because oil blocks up, to ensure the service life of compressor and air-conditioning system, improve the comfort of air-conditioning system simultaneously, promote Consumer's Experience, particularly, can be throttling arrangement heating by opening the heater being arranged on throttling arrangement place, the stifled problem of oil is solved by the mode of this throttling arrangement circulation smoothly in air-conditioning system to make combustible refrigerant, further when heater open reach the first Preset Time the first in running order running time time, whether again detect air-conditioning system occurs oily stifled, and and then determine next step processing policy according to testing result.
In addition, the processing method that the air-conditioning system oil in above-described embodiment provided by the invention is stifled, can also have following additional technical feature:
In technique scheme, preferably, described when reaching the first Preset Time described first running time, whether detect described air-conditioning system occurs oily stifled, to process accordingly according to testing result, specifically comprise: reach described first Preset Time when described first running time, and when not detecting that oily blocking up occurs described air-conditioning system, close described heater; Reach described first Preset Time when described first running time, and when detecting that oily blocking up occurs described air-conditioning system, add up the second running time that described heater keeps duty; And when reaching the second Preset Time described second running time, detecting described air-conditioning system and whether occurring oily stifled, to process accordingly according to testing result.
In this technical scheme, when open the first running time of heater reach the first Preset Time and again to detect the air-conditioning system result whether oil is stifled be no time, close this heater, illustrate that oil problem of blocking up has obtained and effectively solve; And when reaching the first Preset Time and again detect the air-conditioning system result whether oil blocks up for being first running time of opening heater, then continuing to open heater makes it in running order, and when reaching the second Preset Time the second running time that heater continues to open, whether detect air-conditioning system again occurs oily stifled, and and then determine next step processing policy according to testing result, so, solve the stifled problem of air-conditioning system oil by the mode continuing to open heater, recover as early as possible to make air-conditioning system to run well.
In above-mentioned arbitrary technical scheme, preferably, described when reaching the second Preset Time described second running time, whether detect described air-conditioning system occurs oily stifled, to process accordingly according to testing result, specifically comprise: reach described second Preset Time when described second running time, and when detecting that oily blocking up occurs described air-conditioning system, the off-premises station operation troubles also described air-conditioning system of prompting closedown of air-conditioning system described in prompting user; Reach described second Preset Time when described second running time, and when not detecting that oily blocking up occurs described air-conditioning system, close described heater.
In this technical scheme, when reaching the second Preset Time and detect that air-conditioning system is still in oily stifled state second running time of continuing to open heater, the off-premises station operation troubles of user's air-conditioning system then can be pointed out by the mode of sound, word and/or bright light, and prompting directly closes air-conditioning system, make it stop transport, make motor excessive heating to avoid causing because oil is stifled exhaust outlet of compressor exhaust to have some setbacks, and then cause the irremediable loss such as burn-down of electric motor, system crash; Otherwise close heater, illustrate that the stifled problem of oil has obtained and effectively solve, air-conditioning system can be recovered to run well.
In above-mentioned arbitrary technical scheme, preferably, described default operating condition comprises: the duty that the duty that described air-conditioning system defrost starts, described air-conditioning system defrost terminate, described air-conditioning system are in the duty of low-temperature heating and described air-conditioning system and operate in duty lower than default environment temperature; Described combustible refrigerant is R290 cold-producing medium.
In this technical scheme, the default operating condition that air-conditioning system oil easily occurs stifled includes but not limited to: the duty that air-conditioning system defrost starts, the duty that air-conditioning system defrost terminates, air-conditioning system is in start and is in the duty of low-temperature heating and air-conditioning system and operates in duty lower than default environment temperature, wherein, defrost terminates, defrost start and low-temperature heating duty under the air-conditioning system probability that oil occurs stifled reduce successively, generally speaking, when cold-producing medium meets with the system environments of the temperature difference of difference more than 30 DEG C within air-conditioning systems, just there will be oil stifled, and when operating in the environment of subzero less than 15 DEG C, also can block up by oil, subzero 30 DEG C time, oil is stifled certainly, in addition, when air-conditioning system is in frequency conversion, severe, when high operating mode or cryogenic refrigeration, also there is the stifled situation of oil.
And for how judging whether air-conditioning system is in default operating condition, particularly, when the postrun accumulative switching times of cross valve start of air-conditioning system is even-times, then can determine the duty that air-conditioning system is in defrost and terminates, so when accumulative switching times is odd-times, then can determine that air-conditioning system is in defrost and starts or be in the duty in defrost process, and the duty being operated in low-temperature heating can be determined according to start parameters, environment temperature can be detected by the existing temperature sensor of air-conditioning system particularly; In addition, combustible refrigerant is preferably low GWP, does not almost have R290 (i.e. propane) cold-producing medium of any pollution.
Embodiment according to a third aspect of the invention we, propose the treating apparatus that a kind of air-conditioning system oil is stifled, for the air-conditioning system as above described in any embodiment, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, then described treating apparatus comprises: control module, for when detecting that oily blocking up occurs the described air-conditioning system being in default operating condition, open the described heater being arranged on described throttling arrangement place; Statistical module, opens the first in running order running time for adding up described heater; Whether detection module, for when reaching the first Preset Time described first running time of described statistical module counts, detecting described air-conditioning system and occurring oily stifled, to process accordingly according to testing result.
The treating apparatus that the air-conditioning system oil that the embodiment of third aspect present invention provides is stifled, when being detected that by detection module the air-conditioning system generation oil being in the duty that easily generation oil is stifled of use combustible refrigerant blocks up, the oil then needing start treatment strategy to solve air-conditioning system timely and effectively blocks up problem, air-conditioning system is made to recover to run well, and then avoid air-conditioning system to occur the phenomenon that ability decays because oil blocks up, to ensure the service life of compressor and air-conditioning system, improve the comfort of air-conditioning system simultaneously, promote Consumer's Experience, particularly, can control to open the heater being arranged on throttling arrangement place by control module is throttling arrangement heating, the stifled problem of oil is solved by the mode of this throttling arrangement circulation smoothly in air-conditioning system to make combustible refrigerant, further when the heater by statistical module counts open reach the first Preset Time the first in running order running time time, whether again detect air-conditioning system by detection module occurs oily stifled, and and then determine next step processing policy according to testing result.
In addition, the treating apparatus that the air-conditioning system oil in above-described embodiment provided by the invention is stifled, can also have following additional technical feature:
In technique scheme, preferably, described control module also for: reach described first Preset Time when described first running time of described statistical module counts, and described detection module do not detect described air-conditioning system occur oil stifled time, control to close described heater; Described statistical module also for: reach described first Preset Time when described first running time of described statistical module counts, and described detection module detect described air-conditioning system occur oil stifled time, add up the second running time that described heater keeps duty; And described detection module also for: when reaching the second Preset Time described second running time of described statistical module counts, detecting described air-conditioning system, that whether oil occurs is stifled, to process accordingly according to testing result.
In this technical scheme, reach the first Preset Time when the first running time of the unlatching heater by statistical module counts and again detected the air-conditioning system result whether oil is stifled by detection module be no time, control to close this heater by control module, illustrate that the stifled problem of oil has obtained and effectively solve, and when reaching the first Preset Time when the first running time of the unlatching heater by statistical module counts and again detected the air-conditioning system result whether oil blocks up by detection module for being, then controlling to continue to open heater by control module makes it in running order, and when reaching the second Preset Time the second running time that the heater by statistical module counts continues to open, whether detect air-conditioning system again by detection module occurs oily stifled, and and then determine next step processing policy according to testing result, so, the stifled problem of air-conditioning system oil is solved by the mode continuing to open heater, recover as early as possible to make air-conditioning system to run well.
In above-mentioned arbitrary technical scheme, preferably, also comprise: reminding module, described second Preset Time is reached for described second running time when described statistical module counts, and described detection module detect described air-conditioning system occur oil stifled time, the off-premises station operation troubles of air-conditioning system described in prompting user also points out described control module to control to close described air-conditioning system; And described control module also for: reach described second Preset Time when described second running time of described statistical module counts, and described detection module do not detect described air-conditioning system occur oil stifled time, control to close described heater.
In this technical scheme, when reaching the second Preset Time and detect that air-conditioning system is still in oily stifled state by detection mould the second running time of the continuation unlatching heater of statistical module counts, then can be pointed out the off-premises station operation troubles of user's air-conditioning system in the mode of sound, word and/or bright light by reminding module, and point out control module directly to control to close air-conditioning system, make it stop transport, make motor excessive heating to avoid causing because oil is stifled exhaust outlet of compressor exhaust to have some setbacks, and then cause the irremediable loss such as burn-down of electric motor, system crash; Otherwise control to close heater by control module, illustrate that the stifled problem of oil has obtained and effectively solve, air-conditioning system can be recovered to run well.
In above-mentioned arbitrary technical scheme, preferably, described default operating condition comprises: the duty that the duty that described air-conditioning system defrost starts, described air-conditioning system defrost terminate, described air-conditioning system are in the duty of low-temperature heating and described air-conditioning system and operate in duty lower than default environment temperature; Described combustible refrigerant is R290 cold-producing medium.
In this technical scheme, the default operating condition that air-conditioning system oil easily occurs stifled includes but not limited to: the duty that air-conditioning system defrost starts, the duty that air-conditioning system defrost terminates, air-conditioning system is in start and is in the duty of low-temperature heating and air-conditioning system and operates in duty lower than default environment temperature, wherein, defrost terminates, defrost start and low-temperature heating duty under the air-conditioning system probability that oil occurs stifled reduce successively, generally speaking, when cold-producing medium meets with the system environments of the temperature difference of difference more than 30 DEG C within air-conditioning systems, just there will be oil stifled, and when operating in the environment of subzero less than 15 DEG C, also can block up by oil, subzero 30 DEG C time, oil is stifled certainly, in addition, when air-conditioning system is in frequency conversion, severe, when high operating mode or cryogenic refrigeration, also there is the stifled situation of oil.
And for how judging whether air-conditioning system is in default operating condition, particularly, when the postrun accumulative switching times of cross valve start of air-conditioning system is even-times, then can determine the duty that air-conditioning system is in defrost and terminates, so when accumulative switching times is odd-times, then can determine that air-conditioning system is in defrost and starts or be in the duty in defrost process, and the duty being operated in low-temperature heating can be determined according to start parameters, environment temperature can be detected by the existing temperature sensor of air-conditioning system particularly; In addition, combustible refrigerant is preferably low GWP, does not almost have R290 (i.e. propane) cold-producing medium of any pollution.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the schematic diagram of air-conditioning system according to an embodiment of the invention;
Fig. 2 shows the schematic diagram of throttling arrangement according to an embodiment of the invention;
Fig. 3 shows the schematic diagram of anti-explosion heating band according to an embodiment of the invention;
Fig. 4 shows the schematic flow sheet of the stifled processing method of air-conditioning system according to an embodiment of the invention oil;
Fig. 5 shows the block diagram of the stifled treating apparatus of air-conditioning system according to an embodiment of the invention oil.
Wherein, the corresponding relation between the mark of Fig. 1, Fig. 2 and Fig. 3 accompanying drawing and component names is:
102 compressors, 104 cross valves, 106 outdoor heat exchangers, 108 throttling arrangements, 1082 throttling arrangement bodies, 1084 first connectivity ports, 1,086 second connectivity ports, 110 indoor heat exchangers, 112 heaters, 1122 wires, 1124 heating layers, 1126 insulating barriers, 1128 screen layers.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 1 shows the schematic diagram of air-conditioning system according to an embodiment of the invention.
Below in conjunction with Fig. 1 to Fig. 3, concrete scheme of the present invention is described.
Fig. 1 shows the schematic diagram of air-conditioning system according to an embodiment of the invention.
Fig. 2 shows the schematic diagram of throttling arrangement according to an embodiment of the invention.
Fig. 3 shows the schematic diagram of anti-explosion heating band according to an embodiment of the invention.
As shown in Figure 1, air-conditioning system according to an embodiment of the invention, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, and described air-conditioning system comprises: circulate compressor 102, cross valve 104, outdoor heat exchanger 106, throttling arrangement 108 and indoor heat exchanger 110 successively that be communicated with; Described throttling arrangement 108 place is provided with heater 112.
Air-conditioning system according to an embodiment of the invention, comprise the compressor 102 circulating successively and be communicated with, cross valve 104, outdoor heat exchanger 106, throttling arrangement 108 and indoor heat exchanger 110, wherein, throttling arrangement 108 place is provided with heater 112, so, can control whether to open and the heater 112 arranging throttling arrangement 108 place according to using whether oily the blocking up of the air-conditioning system of combustible refrigerant, air-conditioning system is made to recover to run well to solve the stifled problem of oil timely and effectively, and then avoid air-conditioning system to occur the phenomenon that ability decays because oil blocks up, to ensure the service life of compressor 102 and air-conditioning system, improve the comfort of air-conditioning system simultaneously, promote Consumer's Experience.
Air-conditioning system according to the abovementioned embodiments of the present invention, can also have following technical characteristic:
In technique scheme, preferably, described heater 112 specifically for: when described air-conditioning system default operating condition issue oil generation block up time, heat described throttling arrangement 108, to make described combustible refrigerant through described throttling arrangement 108 at described air-conditioning system Inner eycle.
In this technical scheme, when the default operating condition of air-conditioning system issue oil generation block up time, then can heat for throttling arrangement 108 by opening the heater 112 being arranged on throttling arrangement 108 place, and then the combustible refrigerant in air-conditioning system and compressor 102 lubricating oil can be made to circulate through this throttling arrangement 108 smooth circulation in air-conditioning system, effectively to ensure air-conditioning system reliability of operation, and guarantee the service life of product.
In above-mentioned arbitrary technical scheme, preferably, described heater 112 is anti-explosion heating band.
In this technical scheme, the heater 112 being arranged on throttling arrangement 108 place is preferably anti-explosion heating band, while solving the stifled problem of air-conditioning system oil, can guarantee the safety and reliability that air-conditioning system is run.
In above-mentioned arbitrary technical scheme, preferably, described throttling arrangement 108 comprises: throttling arrangement body 1082, first connectivity port 1084 and the second connectivity port 1086, and wherein, described throttling arrangement body 1082 is between described first connectivity port 1084 and described second connectivity port 1086; And described anti-explosion heating band is arranged at described throttling arrangement body 1082 place or described first connectivity port 1084 place or described second connectivity port 1086 place.
In this technical scheme, throttling arrangement 108 includes throttling arrangement body 1082, first connectivity port 1084 and the second connectivity port 1086, wherein, throttling arrangement body 1082 is between the first connectivity port 1084 and the second connectivity port 1086, anti-explosion heating band can be arranged on the first connectivity port 1084 further, any position place in second connectivity port 1086 or throttling arrangement body 1082, to heat throttling arrangement 108 where necessary, as shown in Figure 2, so, the temperature at throttling arrangement 108 place can be promoted, thus reduce the combustible refrigerant viscosity at throttling arrangement 108 place, namely combustible refrigerant can be made to circulate more swimmingly, ensure that the service life of compressor 102 and air-conditioning system, improve the comfort of air-conditioning system.
In above-mentioned arbitrary technical scheme, preferably, described anti-explosion heating band comprises from inside to outside successively: wire 1122, wrap up described wire 1122 heating layer 1124, wrap up the insulating barrier 1126 of described heating layer 1124 and wrap up the screen layer 1128 of described insulating barrier 1126.
In this technical scheme, the anti-explosion heating band being arranged on throttling arrangement 108 place comprises from inside to outside successively: wire 1122, parcel wire 1122 heating layer 1124, wrap up the insulating barrier 1126 of this heating layer 1124 and wrap up the screen layer 1128 of this insulating barrier 1126, as shown in Figure 3, so, can be heated and be prevented by insulating barrier 1126 and screen layer 1128 code wire 1122 electric leakage, heat losses by wire 1122 and heating layer 1124 pairs of throttling arrangements 108; Wherein, insulating barrier 1126 can be high density radiant crosslinked polyethylene insulating barrier 1126, and screen layer 1128 can be foil shielding layer 1128, high density radiant crosslinked polyethylene has good resistance to impact and insulating properties, effectively can prevent electric leakage by code wire 1122, and aluminium foil has the features such as nontoxic, light tight, plasticity is strong, be a kind of well packaging material.
In above-mentioned arbitrary technical scheme, preferably, the bottom of described compressor 102 is provided with temperature-detecting device.
In this technical scheme, by the bottom set temperature checkout gear of the compressor 102 in air-conditioning system, can be used for when using the air-conditioning system of combustible refrigerant to be in the duty that easily generation oil is stifled, judge whether air-conditioning system oil occurs for the temperature bottom the compressor 102 that detects according to this temperature-detecting device stifled, and then determine whether to open the heater 112 being arranged on throttling arrangement 108 place and block up problem with the oil solving air-conditioning system.
In above-mentioned arbitrary technical scheme, preferably, the exhaust ports of described compressor 102 and/or the gas returning port place of described compressor 102 are provided with pressure-detecting device and/or temperature-detecting device.
In this technical scheme, by the exhaust ports of the compressor 102 in air-conditioning system and/or the gas returning port place of compressor 102, pressure-detecting device and/temperature-detecting device are set, can be used for when using the air-conditioning system of combustible refrigerant to be in the duty that easily generation oil is stifled, judge whether air-conditioning system oil occurs for the force value at the exhaust ports of compressor 102 that detects according to this pressure-detecting device and/or temperature-detecting device and/or the gas returning port place of compressor 102 and/or temperature value stifled, and then determine whether to open the heater 112 being arranged on throttling arrangement 108 place and block up problem with the oil solving air-conditioning system.
In above-mentioned arbitrary technical scheme, preferably, described compressor 102, described cross valve 104, described outdoor heat exchanger 106, described throttling arrangement 108 and described indoor heat exchanger 110 to be circulated connection successively by copper pipe.
In this technical scheme, by compressor 102, cross valve 104, outdoor heat exchanger 106, throttling arrangement 108 and indoor heat exchanger 110 to be circulated connection successively by copper pipe, with make combustible refrigerant can in air-conditioning system pipeline flow circuit, realize the normal operation of air-conditioning system, in order to ensure user's request, improve air-conditioning system reliability of operation.
In above-mentioned arbitrary technical scheme, preferably, described throttling arrangement 108 comprises: electric expansion valve, capillary or choke valve.
In this technical scheme, throttling arrangement 108 includes but not limited to: electric expansion valve, capillary or choke valve, the adjustment to refrigerant flow size can be realized, the constant speed realizing air-conditioning system regulates, thus effectively avoid the lubricating oil viscosity because of compressor 102 to cause greatly the stifled combustible refrigerant that makes of throttling arrangement 108 oil cannot participate in circulation, and dallied by compressor 102, the compressor 102 motor excessive heating that system capability and power drop cause affects the problem in the service life of compressor 102 and air-conditioning system, and then effectively improve the experience of user, and capillary to have structure simple, cheap feature, the production cost of air-conditioning system can be reduced.
In above-mentioned arbitrary technical scheme, preferably, described default operating condition comprises: the duty that the duty that described air-conditioning system defrost starts, described air-conditioning system defrost terminate, described air-conditioning system are in the duty of low-temperature heating and described air-conditioning system and operate in duty lower than default environment temperature; Described combustible refrigerant is R290 cold-producing medium.
In this technical scheme, the default operating condition that air-conditioning system oil easily occurs stifled includes but not limited to: the duty that air-conditioning system defrost starts, the duty that air-conditioning system defrost terminates, air-conditioning system is in start and is in the duty of low-temperature heating and air-conditioning system and operates in duty lower than default environment temperature, wherein, defrost terminates, defrost start and low-temperature heating duty under the air-conditioning system probability that oil occurs stifled reduce successively, generally speaking, when cold-producing medium meets with the system environments of the temperature difference of difference more than 30 DEG C within air-conditioning systems, just there will be oil stifled, and when operating in the environment of subzero less than 15 DEG C, also can block up by oil, subzero 30 DEG C time, oil is stifled certainly, in addition, when air-conditioning system is in frequency conversion, severe, when high operating mode or cryogenic refrigeration, also there is the stifled situation of oil.
And for how judging whether air-conditioning system is in default operating condition, particularly, when the postrun accumulative switching times of cross valve start of air-conditioning system is even-times, then can determine the duty that air-conditioning system is in defrost and terminates, so when accumulative switching times is odd-times, then can determine that air-conditioning system is in defrost and starts or be in the duty in defrost process, and the duty being operated in low-temperature heating can be determined according to start parameters, environment temperature can be detected by the existing temperature sensor of air-conditioning system particularly; In addition, combustible refrigerant is preferably low GWP, does not almost have R290 (i.e. propane) cold-producing medium of any pollution.
Fig. 4 shows the schematic flow sheet of the stifled processing method of air-conditioning system according to an embodiment of the invention oil.
As shown in Figure 4, the processing method that air-conditioning system oil according to an embodiment of the invention is stifled, for the air-conditioning system as above described in any embodiment, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, then the treating method comprises: step 402, when detecting that oily blocking up occurs the described air-conditioning system being in default operating condition, open the described heater being arranged on described throttling arrangement place; Step 404, adds up described heater and opens the first in running order running time; Whether step 406, when reaching the first Preset Time described first running time, detecting described air-conditioning system and occurring oily stifled, to process accordingly according to testing result.
The processing method that the air-conditioning system oil that the embodiment of second aspect present invention provides is stifled, when detecting that the air-conditioning system generation oil being in the duty that easily generation oil is stifled of use combustible refrigerant blocks up, the oil then needing start treatment strategy to solve air-conditioning system timely and effectively blocks up problem, air-conditioning system is made to recover to run well, and then avoid air-conditioning system to occur the phenomenon that ability decays because oil blocks up, to ensure the service life of compressor and air-conditioning system, improve the comfort of air-conditioning system simultaneously, promote Consumer's Experience, particularly, can be throttling arrangement heating by opening the heater being arranged on throttling arrangement place, the stifled problem of oil is solved by the mode of this throttling arrangement circulation smoothly in air-conditioning system to make combustible refrigerant, further when heater open reach the first Preset Time the first in running order running time time, whether again detect air-conditioning system occurs oily stifled, and and then determine next step processing policy according to testing result, wherein, the span of the first Preset Time is: 5 minutes ~ 10 minutes.
In addition, the processing method that the air-conditioning system oil in above-described embodiment provided by the invention is stifled, can also have following additional technical feature:
In technique scheme, preferably, described step 406 specifically comprises: reach described first Preset Time when described first running time, and when not detecting that oily blocking up occurs described air-conditioning system, closes described heater; Reach described first Preset Time when described first running time, and when detecting that oily blocking up occurs described air-conditioning system, add up the second running time that described heater keeps duty; And when reaching the second Preset Time described second running time, detecting described air-conditioning system and whether occurring oily stifled, to process accordingly according to testing result.
In this technical scheme, when open the first running time of heater reach the first Preset Time and again to detect the air-conditioning system result whether oil is stifled be no time, close this heater, illustrate that oil problem of blocking up has obtained and effectively solve, and when reaching the first Preset Time and again detect the air-conditioning system result whether oil blocks up for being first running time of opening heater, then continuing to open heater makes it in running order, and when reaching the second Preset Time the second running time that heater continues to open, whether detect air-conditioning system again occurs oily stifled, and and then determine next step processing policy according to testing result, so, the stifled problem of air-conditioning system oil is solved by the mode continuing to open heater, recover as early as possible to make air-conditioning system to run well, wherein, the span of the second Preset Time is: 10 minutes ~ 20 minutes.
In above-mentioned arbitrary technical scheme, preferably, described when reaching the second Preset Time described second running time, whether detect described air-conditioning system occurs oily stifled, to process accordingly according to testing result, specifically comprise: reach described second Preset Time when described second running time, and when detecting that oily blocking up occurs described air-conditioning system, the off-premises station operation troubles also described air-conditioning system of prompting closedown of air-conditioning system described in prompting user; Reach described second Preset Time when described second running time, and when not detecting that oily blocking up occurs described air-conditioning system, close described heater.
In this technical scheme, when reaching the second Preset Time and detect that air-conditioning system is still in oily stifled state second running time of continuing to open heater, the off-premises station operation troubles of user's air-conditioning system then can be pointed out by the mode of sound, word and/or bright light, and prompting directly closes air-conditioning system, make it stop transport, make motor excessive heating to avoid causing because oil is stifled exhaust outlet of compressor exhaust to have some setbacks, and then cause the irremediable loss such as burn-down of electric motor, system crash; Otherwise close heater, illustrate that the stifled problem of oil has obtained and effectively solve, air-conditioning system can be recovered to run well.
In above-mentioned arbitrary technical scheme, preferably, described default operating condition comprises: the duty that the duty that described air-conditioning system defrost starts, described air-conditioning system defrost terminate, described air-conditioning system are in the duty of low-temperature heating and described air-conditioning system and operate in duty lower than default environment temperature; Described combustible refrigerant is R290 cold-producing medium.
In this technical scheme, the default operating condition that air-conditioning system oil easily occurs stifled includes but not limited to: the duty that air-conditioning system defrost starts, the duty that air-conditioning system defrost terminates, air-conditioning system is in start and is in the duty of low-temperature heating and air-conditioning system operates in lower than default environment temperature (such as,-15 DEG C) duty, wherein, defrost terminates, defrost start and low-temperature heating duty under the air-conditioning system probability that oil occurs stifled reduce successively, generally speaking, when cold-producing medium meets with the system environments of the temperature difference of difference more than 30 DEG C within air-conditioning systems, just there will be oil stifled, and when operating in the environment of subzero less than 15 DEG C, also can block up by oil, subzero 30 DEG C time, oil is stifled certainly, in addition, when air-conditioning system is in frequency conversion, severe, when high operating mode or cryogenic refrigeration, also there is the stifled situation of oil.
And for how judging whether air-conditioning system is in default operating condition, particularly, when the postrun accumulative switching times of cross valve start of air-conditioning system is even-times, then can determine the duty that air-conditioning system is in defrost and terminates, so when accumulative switching times is odd-times, then can determine that air-conditioning system is in defrost and starts or be in the duty in defrost process, and the duty being operated in low-temperature heating can be determined according to start parameters, environment temperature can be detected by the existing temperature sensor of air-conditioning system particularly; In addition, combustible refrigerant is preferably low GWP, does not almost have R290 (i.e. propane) cold-producing medium of any pollution.
Air-conditioning system can be worked as particularly when being in default operating condition, stifled by one of at least determining whether air-conditioning system oil occurs in the inspection policies described in following examples:
Embodiment one: by the system pressure value of the predetermined position of the compressor every the first Preset Time air-conditioning system, and then when decision-making system force value is less than or equal to preset pressure value, determine that oil has occurred air-conditioning system stifled, detected pressures value can be carried out particularly by the pressure detecting module of the exhaust ports or gas returning port place that are arranged on the compressor of air-conditioning system, wherein, when predeterminated position is the gas returning port of compressor, the span of preset pressure value is-0.1 MPa ~ 0.1 MPa, when predeterminated position is the exhaust outlet of compressor, the span of preset pressure value is 0.5 MPa ~ 2 MPa.
Embodiment two: by the back pressure value at the gas returning port place of the exhaust pressure value and compressor that detect the exhaust ports of the compressor of air-conditioning system every the first Preset Time respectively, and then judging that the difference (being preferably absolute value) of exhaust pressure value and back pressure value is less than or equal to preset pressure value (such as, 0.1 atmospheric pressure, i.e. 0.01 MPa) time, determine that oil has occurred air-conditioning system stifled, detected pressures value can be carried out by the pressure detecting module of the exhaust ports and gas returning port place that are arranged on the compressor of air-conditioning system particularly.
Embodiment three: by the return air temperature angle value at the gas returning port place of the outlet air temperature and compressor that detect the exhaust ports of the compressor of air-conditioning system every the first Preset Time respectively, and then judging that the difference of outlet air temperature and return air temperature angle value is less than or equal to preset temperature value (such as, 40 DEG C) time, determine that oil has occurred air-conditioning system stifled, detected temperatures value can be carried out by the temperature detecting module of the exhaust ports and gas returning port place that are arranged on the compressor of air-conditioning system particularly.
Embodiment four: by detecting the system temperature value of the predetermined position of the compressor of air-conditioning system every the first Preset Time, and then when decision-making system temperature value is more than or equal to preset temperature value, determine that oil has occurred air-conditioning system stifled, wherein, predetermined position comprises: the exhaust outlet of compressor, the gas returning port of compressor or the bottom of compressor, the value of corresponding preset temperature value can be: 110 DEG C, 110 DEG C, 80 DEG C ~ 150 DEG C (preferably can be 100 DEG C), particularly can by being arranged on the exhaust ports of the compressor of air-conditioning system, the temperature detecting module of gas returning port place and bottom carrys out detected temperatures value.
Embodiment five: by obtaining the temperature parameter of air-conditioning system every the first Preset Time, temperature parameter comprises: indoor environment temperature, indoor heat exchanger temperature, outdoor environment temperature and outdoor heat exchange actuator temperature, particularly, when the absolute value of the difference judging indoor environment temperature and indoor heat exchanger temperature is less than or equal to the first preset temperature (such as, 0 DEG C ~ 3 DEG C), and/or the absolute value of the difference of outdoor environment temperature and outdoor heat exchange actuator temperature is less than or equal to the second preset temperature (such as, 0 DEG C ~ 3 DEG C) time, determine that oil occurs described air-conditioning system stifled, namely indoor environment temperature and indoor heat exchanger temperature more and more close, outdoor environment temperature and outdoor environment temperature more and more close.
Embodiment six: by detecting the System current of air-conditioning system every the first Preset Time, and then when decision-making system current value is less than or equal to pre-set current value, determine that oil occurs described air-conditioning system stifled, when general oil is stifled, the System current of air-conditioning system declines about 50% than during its normal work.
Embodiment seven: by detect respectively every the first Preset Time first end that combustible refrigerant flows through the throttling arrangement of air-conditioning system to the second end of throttling arrangement time the first system force value at first end place and the second system force value at the second end place, and then judging whether the difference of the first system force value and second system force value is less than or equal to preset pressure value (such as, 0.1 atmospheric pressure, i.e. 0.01 MPa) time, determine that oil occurs described air-conditioning system stifled, carry out detected pressures value in particular by the pressure detecting module being arranged on corresponding position.
Embodiment eight: by detect every the first Preset Time first end that combustible refrigerant flows through the throttling arrangement of air-conditioning system to the second end of throttling arrangement time the system pressure value at the second end place of throttling arrangement, and then when decision-making system force value is less than or equal to preset pressure value, determine that oil occurs described air-conditioning system stifled, carry out detected pressures value in particular by the pressure detecting module being arranged on corresponding position.
Fig. 5 shows the block diagram of the stifled treating apparatus of air-conditioning system according to an embodiment of the invention oil.
As shown in Figure 5, the treating apparatus 500 that air-conditioning system oil according to an embodiment of the invention is stifled, for the air-conditioning system as above described in any embodiment, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, then described treating apparatus 500 comprises: control module 502, statistical module 504 and detection module 506.
Wherein, control module 502, for when detecting that oily blocking up occurs the described air-conditioning system being in default operating condition, opens the described heater being arranged on described throttling arrangement place; Statistical module 504, opens the first in running order running time for adding up described heater; Whether detection module 506, for when reaching the first Preset Time described first running time that described statistical module 504 is added up, detecting described air-conditioning system and occurring oily stifled, to process accordingly according to testing result.
The treating apparatus 500 that the air-conditioning system oil that the embodiment of third aspect present invention provides is stifled, when being detected that by detection module 506 the air-conditioning system generation oil being in the duty that easily generation oil is stifled of use combustible refrigerant blocks up, the oil then needing start treatment strategy to solve air-conditioning system timely and effectively blocks up problem, air-conditioning system is made to recover to run well, and then avoid air-conditioning system to occur the phenomenon that ability decays because oil blocks up, to ensure the service life of compressor and air-conditioning system, improve the comfort of air-conditioning system simultaneously, promote Consumer's Experience, particularly, can control to open the heater being arranged on throttling arrangement place by control module 502 is throttling arrangement heating, the stifled problem of oil is solved by the mode of this throttling arrangement circulation smoothly in air-conditioning system to make combustible refrigerant, further when the heater added up by statistical module 504 open reach the first Preset Time the first in running order running time time, whether again detect air-conditioning system by detection module 506 occurs oily stifled, and and then determine next step processing policy according to testing result.
In addition, the treating apparatus 500 that the air-conditioning system oil in above-described embodiment provided by the invention is stifled, can also have following additional technical feature:
In technique scheme, preferably, described control module 502 also for: reach described first Preset Time when described first running time that described statistical module 504 is added up, and described detection module 506 do not detect described air-conditioning system occur oil stifled time, control to close described heater; Described statistical module 504 also for: reach described first Preset Time when described first running time that described statistical module 504 is added up, and described detection module 506 detect described air-conditioning system occur oil stifled time, add up the second running time that described heater keeps duty; And described detection module 506 also for: when reaching the second Preset Time described second running time that described statistical module 504 is added up, detecting described air-conditioning system, that whether oil occurs is stifled, to process accordingly according to testing result.
In this technical scheme, reach the first Preset Time when the first running time of the unlatching heater added up by statistical module 504 and again detected the air-conditioning system result whether oil is stifled by detection module 506 be no time, control to close this heater by control module 502, illustrate that the stifled problem of oil has obtained and effectively solve, and when reaching the first Preset Time when the first running time of the unlatching heater added up by statistical module 504 and again detected the air-conditioning system result whether oil blocks up by detection module 506 for being, then controlling to continue to open heater by control module 502 makes it in running order, and when reaching the second Preset Time the second running time that the heater added up by statistical module 504 continues to open, whether detect air-conditioning system again by detection module 506 occurs oily stifled, and and then determine next step processing policy according to testing result, so, the stifled problem of air-conditioning system oil is solved by the mode continuing to open heater, recover as early as possible to make air-conditioning system to run well.
In above-mentioned arbitrary technical scheme, preferably, also comprise: reminding module 508, for reaching described second Preset Time when described second running time that described statistical module 504 is added up, and described detection module 506 detect described air-conditioning system occur oil stifled time, the off-premises station operation troubles of air-conditioning system described in prompting user also points out described control module 502 to control to close described air-conditioning system; And described control module 502 also for: reach described second Preset Time when described second running time that described statistical module 504 is added up, and described detection module 506 do not detect described air-conditioning system occur oil stifled time, control to close described heater.
In this technical scheme, when reaching the second Preset Time and detect that air-conditioning system is still in oily stifled state by detection mould the second running time that heater is opened in the continuation that statistical module 504 is added up, then can by reminding module 508 with sound, the mode of word and/or bright light points out the off-premises station operation troubles of user's air-conditioning system, and point out control module 502 directly to control to close air-conditioning system, make it stop transport, motor excessive heating is made to avoid causing exhaust outlet of compressor exhaust to have some setbacks because oil is stifled, and then cause burn-down of electric motor, the irremediable loss such as system crash, otherwise control to close heater by control module 502, illustrate that the stifled problem of oil has obtained and effectively solve, air-conditioning system can be recovered to run well.
In above-mentioned arbitrary technical scheme, preferably, described default operating condition comprises: the duty that the duty that described air-conditioning system defrost starts, described air-conditioning system defrost terminate, described air-conditioning system are in the duty of low-temperature heating and described air-conditioning system and operate in duty lower than default environment temperature; Described combustible refrigerant is R290 cold-producing medium.
In this technical scheme, the default operating condition that air-conditioning system oil easily occurs stifled includes but not limited to: the duty that air-conditioning system defrost starts, the duty that air-conditioning system defrost terminates, air-conditioning system is in start and is in the duty of low-temperature heating and air-conditioning system and operates in duty lower than default environment temperature, wherein, defrost terminates, defrost start and low-temperature heating duty under the air-conditioning system probability that oil occurs stifled reduce successively, generally speaking, when cold-producing medium meets with the system environments of the temperature difference of difference more than 30 DEG C within air-conditioning systems, just there will be oil stifled, and when operating in the environment of subzero less than 15 DEG C, also can block up by oil, subzero 30 DEG C time, oil is stifled certainly, in addition, when air-conditioning system is in frequency conversion, severe, when high operating mode or cryogenic refrigeration, also there is the stifled situation of oil.
And for how judging whether air-conditioning system is in default operating condition, particularly, when the postrun accumulative switching times of cross valve start of air-conditioning system is even-times, then can determine the duty that air-conditioning system is in defrost and terminates, so when accumulative switching times is odd-times, then can determine that air-conditioning system is in defrost and starts or be in the duty in defrost process, and the duty being operated in low-temperature heating can be determined according to start parameters, environment temperature can be detected by the existing temperature sensor of air-conditioning system particularly; In addition, combustible refrigerant is preferably low GWP, does not almost have R290 (i.e. propane) cold-producing medium of any pollution.
More than be described with reference to the accompanying drawings technical scheme of the present invention, can solve the stifled problem of oil timely and effectively makes air-conditioning system recover to run well, and then avoid air-conditioning system to occur the phenomenon that ability decays because oil blocks up, to ensure the service life of compressor and air-conditioning system, improve the comfort of air-conditioning system simultaneously, promote Consumer's Experience, simultaneously also better mate new cooling media provide a kind of reference frame for studying new type compressor lubricating oil from now on.
In the present invention, term " first ", " second " object only for describing, and instruction or hint relative importance can not be interpreted as.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. an air-conditioning system, is characterized in that, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, and described air-conditioning system comprises:
Circulate compressor, cross valve, outdoor heat exchanger, throttling arrangement and indoor heat exchanger successively that be communicated with;
Described throttling arrangement place is provided with heater.
2. air-conditioning system according to claim 1, is characterized in that,
Described heater specifically for: when described air-conditioning system default operating condition issue oil generation block up time, heat described throttling arrangement, to make described combustible refrigerant through described throttling arrangement at described air-conditioning system Inner eycle; And
Described heater is anti-explosion heating band.
3. the processing method that air-conditioning system oil is stifled, is characterized in that, for air-conditioning system as claimed in claim 1 or 2, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, then the treating method comprises:
When detecting that oily blocking up occurs the described air-conditioning system being in default operating condition, open the described heater being arranged on described throttling arrangement place;
Add up described heater and open the first in running order running time;
When reaching the first Preset Time described first running time, detecting described air-conditioning system and whether occurring oily stifled, to process accordingly according to testing result.
4. the processing method that air-conditioning system oil according to claim 3 is stifled, it is characterized in that, described when reaching the first Preset Time described first running time, detect described air-conditioning system and whether occur oily stifled, to process accordingly according to testing result, specifically comprise:
Reach described first Preset Time when described first running time, and when not detecting that oily blocking up occurs described air-conditioning system, close described heater;
Reach described first Preset Time when described first running time, and when detecting that oily blocking up occurs described air-conditioning system, add up the second running time that described heater keeps duty; And
When reaching the second Preset Time described second running time, detecting described air-conditioning system and whether occurring oily stifled, to process accordingly according to testing result.
5. the processing method that air-conditioning system oil according to claim 4 is stifled, it is characterized in that, described when reaching the second Preset Time described second running time, detect described air-conditioning system and whether occur oily stifled, to process accordingly according to testing result, specifically comprise:
Described second Preset Time is reached when described second running time, and when detecting that oily blocking up occurs described air-conditioning system, the off-premises station operation troubles also described air-conditioning system of prompting closedown of air-conditioning system described in prompting user;
Reach described second Preset Time when described second running time, and when not detecting that oily blocking up occurs described air-conditioning system, close described heater.
6. the processing method that the air-conditioning system oil according to any one of claim 3 to 5 is stifled, is characterized in that,
Described default operating condition comprises: the duty that the duty that described air-conditioning system defrost starts, described air-conditioning system defrost terminate, described air-conditioning system are in the duty of low-temperature heating and described air-conditioning system and operate in duty lower than default environment temperature;
Described combustible refrigerant is R290 cold-producing medium.
7. the treating apparatus that air-conditioning system oil is stifled, is characterized in that, for air-conditioning system as claimed in claim 1 or 2, the cold-producing medium that described air-conditioning system uses is combustible refrigerant, then described treating apparatus comprises:
Control module, for when detecting that oily blocking up occurs the described air-conditioning system being in default operating condition, opens the described heater being arranged on described throttling arrangement place;
Statistical module, opens the first in running order running time for adding up described heater;
Whether detection module, for when reaching the first Preset Time described first running time of described statistical module counts, detecting described air-conditioning system and occurring oily stifled, to process accordingly according to testing result.
8. the treating apparatus that air-conditioning system oil according to claim 7 is stifled, is characterized in that,
Described control module also for: reach described first Preset Time when described first running time of described statistical module counts, and described detection module do not detect described air-conditioning system occur oil stifled time, control to close described heater;
Described statistical module also for: reach described first Preset Time when described first running time of described statistical module counts, and described detection module detect described air-conditioning system occur oil stifled time, add up the second running time that described heater keeps duty; And
Described detection module also for: when reaching the second Preset Time described second running time of described statistical module counts, detecting described air-conditioning system, that whether oil occurs is stifled, to process accordingly according to testing result.
9. the treating apparatus that air-conditioning system oil according to claim 8 is stifled, is characterized in that, also comprise:
Reminding module, described second Preset Time is reached for described second running time when described statistical module counts, and described detection module detect described air-conditioning system occur oil stifled time, the off-premises station operation troubles of air-conditioning system described in prompting user also points out described control module to control to close described air-conditioning system; And
Described control module also for: reach described second Preset Time when described second running time of described statistical module counts, and described detection module do not detect described air-conditioning system occur oil stifled time, control to close described heater.
10. the treating apparatus that the air-conditioning system oil according to any one of claim 7 to 9 is stifled, is characterized in that,
Described default operating condition comprises: the duty that the duty that described air-conditioning system defrost starts, described air-conditioning system defrost terminate, described air-conditioning system are in the duty of low-temperature heating and described air-conditioning system and operate in duty lower than default environment temperature;
Described combustible refrigerant is R290 cold-producing medium.
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Cited By (7)

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CN107062679A (en) * 2017-04-27 2017-08-18 广东美的制冷设备有限公司 Air-conditioning system and its control method
CN109424547A (en) * 2017-08-28 2019-03-05 宁波奥克斯电气股份有限公司 A kind of oil temperature heating tape control method and air conditioner
CN109424547B (en) * 2017-08-28 2019-11-08 宁波奥克斯电气股份有限公司 A kind of oil temperature heating tape control method and air conditioner
CN108105940A (en) * 2017-11-29 2018-06-01 广东美的制冷设备有限公司 Oil of air conditioner blocks up the detection method and air conditioner of failure
CN108444140A (en) * 2018-05-08 2018-08-24 广东美的制冷设备有限公司 Air conditioner and its control method and computer readable storage medium
CN108488997A (en) * 2018-05-08 2018-09-04 广东美的制冷设备有限公司 Air conditioner and its control method and computer readable storage medium
CN110887165A (en) * 2018-09-10 2020-03-17 奥克斯空调股份有限公司 Refrigerant leakage detection method and device and air conditioner
CN110887165B (en) * 2018-09-10 2021-08-24 奥克斯空调股份有限公司 Refrigerant leakage detection method and device and air conditioner
CN115164458A (en) * 2022-07-26 2022-10-11 海信空调有限公司 Air conditioner and oil blockage prevention control method thereof
CN115164458B (en) * 2022-07-26 2023-10-13 海信空调有限公司 Air conditioner and oil blocking prevention control method thereof

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