CN105570987B - Air-conditioning system, air-conditioning system oil stifled processing method and processing unit - Google Patents

Air-conditioning system, air-conditioning system oil stifled processing method and processing unit Download PDF

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Publication number
CN105570987B
CN105570987B CN201511034158.1A CN201511034158A CN105570987B CN 105570987 B CN105570987 B CN 105570987B CN 201511034158 A CN201511034158 A CN 201511034158A CN 105570987 B CN105570987 B CN 105570987B
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air
conditioning system
stifled
oil
heating device
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CN105570987A (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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    • 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 the processing units that a kind of air-conditioning system, a kind of stifled processing method of air-conditioning system oil and a kind of air-conditioning system oil block up, wherein, the refrigerant that the air-conditioning system uses is combustible refrigerant, the processing method is used for the air-conditioning system, it include: to open the heating device being arranged at the throttling set when detecting that the air-conditioning system in default operating condition occurs oily stifled；It counts the heating device and opens the first in running order runing time；When first runing time reaches the first preset time, detecting the air-conditioning system, whether to occur oil stifled, to perform corresponding processing according to testing result.The technical solution, can timely and effectively solve the problems, such as that oil is stifled makes air-conditioning system restore to run well, and then air-conditioning system is avoided the phenomenon that ability decaying occur because oil is stifled, to guarantee the service life of compressor and air-conditioning system, the comfort of air-conditioning system is improved simultaneously, promotes user experience.

Description

Air-conditioning system, air-conditioning system oil stifled processing method and processing unit
Technical field
The present invention relates to air-conditioning technical fields, in particular to the stifled place of a kind of air-conditioning system, a kind of air-conditioning system oil The processing unit that reason method and a kind of air-conditioning system oil block up.
Background technique
Currently, substituting R22 refrigerant using R410a refrigerant mostly, advantage is bright in technical field of air conditioner refrigeration It is aobvious to be embodied on convertible frequency air-conditioner, but due to the GWP of R410a refrigerant (Global Warming Potential, global warming Latent energy value) it is higher, it is got worse in Present Global greenhouse effects, the background of global climate transition pay attention to day by day is coped in countries in the world Under, it will gradually eliminated.Therefore, more absorbed research at present is freezed using R32 refrigerant, R290 refrigerant as the low GWP of representative Agent, especially for this refrigerant for almost not having any pollution of R290 refrigerant, meanwhile, the research and development of corresponding compressor also exist In progress, the especially lubricating oil research and development of new type compressor are paid more and more attention.
Lubricating oil in cooler compressor be to the normal operation of system it is extremely important, lubricating oil play to cylinder and Rotor lubrication, sealing and the effect of cooling.When compressor runs well, lubricating oil sucks gas from compression motor spindle by crankshaft Cylinder enters system with the refrigerant of high temperature and pressure after overcompression, later as refrigerant circulation turns again to compressor bottom Portion, while the heat that compressor electric motor and cylinder generate can also be taken away by refrigerant and lubricating oil.If led for some reason The problems such as causing oil return return-air unsmooth, will result in compressor lubrication shortage of oil, motor idle running fever, will further will lead to compression Between machine cylinder and rotor abrasion increase, internal temperature it is excessively high, eventually lead to motor burn, system crash.So being designed in system When, it has to guarantee that lubricating oil can normally return to compressor and motor heat is timely discharged.
However, its viscosity can sharply increase at low temperature, especially cold for combustible refrigerant-R290 refrigerant Super low temperature refrigeration agent and lubricating oil in warm frequency changer, when defrosting terminates four-way valve commutation, in evaporator (indoor heat exchanger) It needs to enter condenser (outdoor heat exchanger) by throttling set (for example, electric expansion valve), while combustible refrigerant is because of peace Full property considers that charging amount is less, therefore the pressure of the pressure ratio R410a refrigerant of air-conditioning system, the air-conditioning system of R32 refrigerant It is much smaller, to will cause the bigger oil blocking throttling set of viscosity, cause combustible refrigerant that can not participate in recycling, in turn Compressor is set to dally, ability and operation power decline, system oil starvation lack fluorine, and the motor of compressor is excessively sent out after long time running Heat greatly reduces the service life of compressor and system, influences the use feeling of user, while the appearance of this problem is also Design causes very big influence using the air-conditioning system of combustible refrigerant.
Therefore, how when air-conditioning system occurs oily stifled, timely and effectively solving the problems, such as that oil is stifled restores air-conditioning system just Often operating, and then air-conditioning system is avoided the phenomenon that ability decaying occur because oil is stifled, to guarantee the use of compressor and air-conditioning system Service life, while the comfort of air-conditioning system is improved, become technical problem urgently to be resolved.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, an object of the present invention is to provide a kind of air-conditioning systems.
It is another object of the present invention to propose a kind of processing method that air-conditioning system oil is stifled.
Yet another object of the invention is that proposing a kind of processing unit that air-conditioning system oil is stifled.
To realize that at least one above-mentioned purpose proposes a kind of air-conditioning system according to the embodiment of the first aspect of the invention System, the refrigerant that the air-conditioning system uses are combustible refrigerant, and the air-conditioning system includes: to circuit sequentially the compression of connection Machine, four-way valve, outdoor heat exchanger, throttling set and indoor heat exchanger；Heating device is provided at the throttling set.
The air-conditioning system that the embodiment of first aspect present invention provides, including circuit sequentially the compressor of connection, four-way valve, Outdoor heat exchanger, throttling set and indoor heat exchanger, wherein heating device is provided at throttling set, in this way, can basis Using the air-conditioning system of combustible refrigerant, whether oil blocks up the heating device to control whether unlatching be arranged at throttling set, with Timely and effectively solving the problems, such as that oil is stifled makes air-conditioning system restore to run well, and then avoids air-conditioning system from ability occur because oil is stifled and decline The phenomenon that subtracting to guarantee the service life of compressor and air-conditioning system, while improving the comfort of air-conditioning system, is promoted and is used Family experience.
In addition, the air-conditioning system in above-described embodiment provided by the invention, can also have following additional technical feature:
In the above-mentioned technical solutions, it is preferable that the heating device is specifically used for: when the air-conditioning system is in default work State issue oil generation it is stifled when, the throttling set is heated, so that the combustible refrigerant is through the throttling set in the sky Circulation in adjusting system；And the heating device is anti-explosion heating band.
In the technical scheme, it when the default operating condition of air-conditioning system, which issues oil generation, to be blocked up, then can be set by opening The heating device at throttling set is set as throttling set heating, and then the combustible refrigerant and pressure in air-conditioning system can be made Contracting machine lubricating oil by the throttling set in air-conditioning system smooth circulation circulate, with effectively guarantee air-conditioning system operation can By property, and ensure the service life of product, wherein heating device can preferably be anti-explosion heating band.
Embodiment according to the second aspect of the invention proposes a kind of processing method that air-conditioning system oil is stifled, for such as Air-conditioning system described in upper any embodiment, the refrigerant that the air-conditioning system uses are combustible refrigerant, the then processing Method includes: to open and be arranged in the throttling when detecting that the air-conditioning system in default operating condition occurs oily stifled The heating device at device；It counts the heating device and opens the first in running order runing time；When described When one runing time reaches the first preset time, detecting the air-conditioning system, whether to occur oil stifled, to carry out according to testing result Corresponding processing.
The stifled processing method of the air-conditioning system oil that the embodiment of second aspect of the present invention provides, uses combustibility when detecting When occurring oily stifled in the easy air-conditioning system that the working condition that oil blocks up occurs of refrigerant, then need to start processing strategie and come in time The oil for efficiently solving air-conditioning system blocks up problem, and air-conditioning system is made to restore to run well, and then air-conditioning system is avoided to go out because oil is stifled The phenomenon that existing ability decaying, to guarantee the service life of compressor and air-conditioning system, while the use for improving air-conditioning system is comfortable Property, user experience is promoted, specifically, can be heated by opening the heating device being arranged at throttling set for throttling set, Solve the problems, such as that oil is stifled in a manner of making combustible refrigerant smoothly circulate in air-conditioning system by the throttling set, further When heating device, which opens the first in running order runing time, reaches the first preset time, detecting air-conditioning system again is No generation oil is stifled, and determines the processing strategie of next step according to testing result in turn.
In addition, the processing method that the air-conditioning system oil in above-described embodiment provided by the invention blocks up, can also have following Additional technical feature:
In the above-mentioned technical solutions, it is preferable that described when first runing time reaches the first preset time, detection Whether the air-conditioning system, which occurs oil, is blocked up, and to perform corresponding processing according to testing result, is specifically included: when first operation Time reaches first preset time, and be not detected the air-conditioning system occur oil it is stifled when, close the heating device；When First runing time reaches first preset time, and detect the air-conditioning system occur oil it is stifled when, described in statistics Heating device keeps the second runing time of working condition；And when second runing time reaches the second preset time When, detecting the air-conditioning system, whether to occur oil stifled, to perform corresponding processing according to testing result.
In the technical scheme, when the first runing time for opening heating device reaches the first preset time and detects again When the whether oily stifled result of air-conditioning system is no, the heating device is closed, illustrates that the stifled problem of oil has been efficiently solved；And When the first runing time for opening heating device reaches the first preset time and the again whether oily stifled result of detection air-conditioning system When to be, then continues starting heating device and be at working condition, and when the second operation that heating device continues starting Between when reaching the second preset time, detecting air-conditioning system again, that oil whether occurs is stifled, and under determining according to testing result in turn The processing strategie of one step, in this way, solving the problems, such as that air-conditioning system oil is stifled by way of continuing starting heating device, so that empty Adjusting system restores to run well as early as possible.
In any of the above-described technical solution, it is preferable that it is described when second runing time reaches the second preset time, Detecting the air-conditioning system, whether to occur oil stifled, to perform corresponding processing according to testing result, specifically includes: when described second Runing time reaches second preset time, and detect the air-conditioning system occur oil it is stifled when, prompt air-conditioning described in user The outdoor unit operation troubles of system simultaneously prompts to close the air-conditioning system；It is preset when second runing time reaches described second Time, and be not detected the air-conditioning system occur oil it is stifled when, close the heating device.
In the technical scheme, when the second runing time for continuing starting heating device reaches the second preset time and detection When state stifled still in oil to air-conditioning system, then user's air-conditioning system can be prompted by way of sound, text and/or bright light Outdoor unit operation troubles, and prompt directly close air-conditioning system, make its stoppage in transit, to avoid because oil block up lead to exhaust outlet of compressor Exhaust has some setbacks and makes motor excessive heating, and then causes motor to burn, the irremediable loss such as system crash；Otherwise, it closes Heating device illustrates that the stifled problem of oil has been efficiently solved, and air-conditioning system can be restored to run well.
In any of the above-described technical solution, it is preferable that the default operating condition includes: that the air-conditioning system defrost is opened Working condition that the working condition of beginning, the air-conditioning system defrost terminate, the air-conditioning system are in the work shape of low-temperature heating State and the air-conditioning system operate in the working condition lower than default environment temperature；The combustible refrigerant is R290 refrigeration Agent.
In the technical scheme, air-conditioning system easily occurs the stifled default operating condition of oil and includes but is not limited to: air-conditioning system Working condition that working condition that defrost starts, air-conditioning system defrost terminate, air-conditioning system are in booting in low-temperature heating Working condition and air-conditioning system operate in the working condition lower than default environment temperature, wherein defrost terminates, defrost start with And the probability that air-conditioning system occurs that oil blocks up under the working condition of low-temperature heating successively reduces, to sum up, when refrigerant is in air-conditioning When meeting with the system environments of the temperature difference of 30 DEG C of difference or more in system, it is stifled just to will appear oil, and operating in subzero 15 DEG C When environment below, also can oil it is stifled, at subzero 30 DEG C, oil is stifled certainly, in addition, when air-conditioning system be in frequency conversion, badly, it is high When operating condition or cryogenic refrigeration, there is also the stifled situations of oil.
And for how to judge whether air-conditioning system is in default operating condition, specifically, when the four-way valve of air-conditioning system When the postrun accumulative switching times that are switched on are even-times, then it can determine that air-conditioning system is in the working condition that defrost terminates, that When accumulative switching times are odd-times, then it can determine that air-conditioning system is in defrost and starts or be in work during defrost Make state, and the working condition to work in low-temperature heating can be determined according to booting setting parameter, specifically environment temperature can be with Pass through the existing temperature sensor detection of air-conditioning system；In addition, combustible refrigerant is preferably low GWP, does not almost have any dirt R290 (i.e. propane) refrigerant of dye.
Embodiment according to the third aspect of the invention we proposes a kind of processing unit that air-conditioning system oil is stifled, for such as Air-conditioning system described in upper any embodiment, the refrigerant that the air-conditioning system uses are combustible refrigerant, the then processing Device includes: control module, for when detecting that the air-conditioning system in default operating condition occurs oily stifled, unlatching to be set Set the heating device at the throttling set；Statistical module is opened for counting the heating device in work shape First runing time of state；It is pre- to reach first for first runing time when the statistical module counts for detection module If when the time, detecting the air-conditioning system, whether to occur oil stifled, to perform corresponding processing according to testing result.
The stifled processing unit of the air-conditioning system oil that the embodiment of third aspect present invention provides, is detected when by detection module To when occurring oily stifled in the easy air-conditioning system that the stifled working condition of oil occurs of combustible refrigerant is used, then need to start place Reason strategy is stifled come the oil for timely and effectively solving the problems, such as air-conditioning system, makes air-conditioning system restore to run well, and then avoid air-conditioning There is the phenomenon that ability decaying because oil is stifled in system, to guarantee the service life of compressor and air-conditioning system, while improving air-conditioning system The comfort of system promotes user experience, specifically, can control unlatching by control module and be arranged at throttling set Heating device is throttling set heating, so that combustible refrigerant passes through the side that the throttling set smoothly circulates in air-conditioning system Formula is oily stifled to solve the problems, such as, further when the heating device by statistical module counts opens the first in running order operation It is stifled again by whether detection module detection air-conditioning system occurs oil when time reaches the first preset time, and in turn according to inspection Survey the processing strategie that result determines next step.
In addition, the processing unit that the air-conditioning system oil in above-described embodiment provided by the invention blocks up, can also have following Additional technical feature:
In the above-mentioned technical solutions, it is preferable that the control module is also used to: when described the of the statistical module counts One runing time reaches first preset time, and the detection module be not detected the air-conditioning system occur oil it is stifled when, The heating device is closed in control；The statistical module is also used to: when first runing time of the statistical module counts Reach first preset time, and the detection module detect the air-conditioning system occur oil it is stifled when, count the heating Device keeps the second runing time of working condition；And the detection module is also used to: when the statistical module counts Second runing time when reaching the second preset time, detecting the air-conditioning system, whether to occur oil stifled, according to detection As a result it performs corresponding processing.
In the technical scheme, when the first runing time of the unlatching heating device by statistical module counts reaches first Preset time and when detecting air-conditioning system again by detection module whether the stifled result of oil is no, passes through control module control and closes The heating device is closed, illustrates that the stifled problem of oil has been efficiently solved；And it heats and fills when the unlatching by statistical module counts The first runing time set reaches the first preset time and detects the whether oily stifled result of air-conditioning system again by detection module When to be, then heating device is continued starting by control module control and be at working condition, and worked as and pass through statistical module When the second runing time that the heating device of statistics continues starting reaches the second preset time, detected again by detection module Whether air-conditioning system, which occurs oil, is blocked up, and determines the processing strategie of next step according to testing result in turn, in this way, by continuing starting The mode of heating device is stifled to solve the problems, such as air-conditioning system oil, so that air-conditioning system is restored to run well as early as possible.
In any of the above-described technical solution, it is preferable that further include: cue module, for when the statistical module counts Second runing time reaches second preset time, and the detection module detects that the air-conditioning system occurs oil and blocks up When, it prompts the outdoor unit operation troubles of air-conditioning system described in user and the control module control is prompted to close the air-conditioning system System；And the control module is also used to: when second runing time of the statistical module counts reaches described second in advance If the time, and the detection module be not detected the air-conditioning system occur oil it is stifled when, the heating device is closed in control.
In the technical scheme, when the second runing time for continuing starting heating device of statistical module counts reaches second Preset time and when detecting stifled still in the oil state of air-conditioning system by detecting mould, then can by cue module with sound, The mode of text and/or bright light prompts the outdoor unit operation troubles of user's air-conditioning system, and control module is prompted to directly control pass Air-conditioning system is closed, its stoppage in transit is made, causes exhaust outlet of compressor exhaust to make motor excessive heating due to having some setbacks to avoid because oil is stifled, in turn Motor is caused to burn, the irremediable loss such as system crash；Otherwise, it is controlled by control module and closes heating device, explanation The stifled problem of oil has been efficiently solved, and air-conditioning system can be restored to run well.
In any of the above-described technical solution, it is preferable that the default operating condition includes: that the air-conditioning system defrost starts Working condition, the air-conditioning system defrost working condition, the air-conditioning system that terminate be in the working condition of low-temperature heating And the air-conditioning system operates in the working condition lower than default environment temperature；The combustible refrigerant is R290 refrigeration Agent.
In the technical scheme, air-conditioning system easily occurs the stifled default operating condition of oil and includes but is not limited to: air-conditioning system Working condition that working condition that defrost starts, air-conditioning system defrost terminate, air-conditioning system are in booting in low-temperature heating Working condition and air-conditioning system operate in the working condition lower than default environment temperature, wherein defrost terminates, defrost start with And the probability that air-conditioning system occurs that oil blocks up under the working condition of low-temperature heating successively reduces, to sum up, when refrigerant is in air-conditioning When meeting with the system environments of the temperature difference of 30 DEG C of difference or more in system, it is stifled just to will appear oil, and operating in subzero 15 DEG C When environment below, also can oil it is stifled, at subzero 30 DEG C, oil is stifled certainly, in addition, when air-conditioning system be in frequency conversion, badly, it is high When operating condition or cryogenic refrigeration, there is also the stifled situations of oil.
And for how to judge whether air-conditioning system is in default operating condition, specifically, when the four-way valve of air-conditioning system When the postrun accumulative switching times that are switched on are even-times, then it can determine that air-conditioning system is in the working condition that defrost terminates, that When accumulative switching times are odd-times, then it can determine that air-conditioning system is in defrost and starts or be in work during defrost Make state, and the working condition to work in low-temperature heating can be determined according to booting setting parameter, specifically environment temperature can be with Pass through the existing temperature sensor detection of air-conditioning system；In addition, combustible refrigerant is preferably low GWP, does not almost have any dirt R290 (i.e. propane) refrigerant of dye.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic diagram of air-conditioning system according to an embodiment of the invention；
Fig. 2 shows the schematic diagrames of throttling set 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 flow diagram of the stifled processing method of air-conditioning system oil according to an embodiment of the invention；
Fig. 5 shows the block diagram of the stifled processing unit of air-conditioning system oil according to an embodiment of the invention.
Wherein, the corresponding relationship between the label and component names of Fig. 1, Fig. 2 and Fig. 3 attached drawing are as follows:
102 compressors, 104 four-way valves, 106 outdoor heat exchangers, 108 throttling sets, 1082 throttling set ontologies, 1,084 One connectivity port, 1086 second connection end mouths, 110 indoor heat exchangers, 112 heating devices, 1122 conducting wires, 1124 heating layers, 1126 insulating layers, 1128 shielded layers.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.
Fig. 1 shows the schematic diagram of air-conditioning system according to an embodiment of the invention.
Concrete scheme of the invention is illustrated below with reference to Fig. 1 to Fig. 3.
Fig. 1 shows the schematic diagram of air-conditioning system according to an embodiment of the invention.
Fig. 2 shows the schematic diagrames of throttling set 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 refrigerant that the air-conditioning system uses are Combustible refrigerant, the air-conditioning system include: the compressor 102 for circuiting sequentially connection, four-way valve 104, outdoor heat exchanger 106, throttling set 108 and indoor heat exchanger 110；Heating device 112 is provided at the throttling set 108.
The air-conditioning system of embodiment according to the present invention, compressor 102, four-way valve 104, room including circuiting sequentially connection External heat exchanger 106, throttling set 108 and indoor heat exchanger 110, wherein heating device 112 is provided at throttling set 108, In this way, can according to use combustible refrigerant air-conditioning system whether oil block up control whether open with setting throttling set Heating device 112 at 108 makes air-conditioning system restore to run well, and then avoids sky to efficiently solve the stifled problem of oil in time There is the phenomenon that ability decaying because oil is stifled in adjusting system, to guarantee the service life of compressor 102 and air-conditioning system, while improving sky The comfort of adjusting system promotes user experience.
Air-conditioning system according to the abovementioned embodiments of the present invention can also have following technical characteristic:
In the above-mentioned technical solutions, it is preferable that the heating device 112 is specifically used for: when the air-conditioning system is default Working condition issue oil generation it is stifled when, the throttling set 108 is heated, so that the combustible refrigerant is through the throttling set 108 recycle in the air-conditioning system.
In the technical scheme, it when the default operating condition of air-conditioning system, which issues oil generation, to be blocked up, then can be set by opening The heating device 112 at throttling set 108 is set as the heating of throttling set 108, and then the combustibility in air-conditioning system can be made The smooth circulation in air-conditioning system circulates by the throttling set 108 for refrigerant and 102 lubricating oil of compressor, effectively to guarantee Air-conditioning system reliability of operation, and ensure the service life of product.
In any of the above-described technical solution, it is preferable that the heating device 112 is anti-explosion heating band.
In the technical scheme, it is preferably anti-explosion heating band that the heating device 112 at throttling set 108, which is arranged in, can While solving the problems, such as that air-conditioning system oil blocks up, it is ensured that the safety and reliability of air-conditioning system operation.
In any of the above-described technical solution, it is preferable that the throttling set 108 includes: throttling set ontology 1082, first Connectivity port 1084 and second connection end mouth 1086, wherein the throttling set ontology 1082 is located at first connectivity port Between 1084 and the second connection end mouth 1086；And the anti-explosion heating band is set to the throttling set ontology 1082 At place or first connectivity port 1084 or at the second connection end mouth 1086.
In the technical scheme, throttling set 108 includes throttling set ontology 1082, the first connectivity port 1084 and Two connectivity ports 1086, wherein throttling set ontology 1082 be located at the first connectivity port 1084 and second connection end mouth 1086 it Between, anti-explosion heating band may further be arranged in the first connectivity port 1084, second connection end mouth 1086 or throttling set sheet At any position in body 1082, to be heated if necessary to throttling set 108, as shown in Fig. 2, in this way, can be promoted Temperature at throttling set 108, to reduce the combustible refrigerant viscosity at throttling set 108, it can make flammable system Cryogen more swimmingly circulates, and ensure that the service life of compressor 102 and air-conditioning system, and the use for improving air-conditioning system is relaxed Adaptive.
In any of the above-described technical solution, it is preferable that the anti-explosion heating band successively include: from inside to outside conducting wire 1122, Wrap up the heating layer 1124 of the conducting wire 1122, the insulating layer 1126 of the package heating layer 1124 and the package insulating layer 1126 shielded layer 1128.
In the technical scheme, the anti-explosion heating band being arranged at throttling set 108 successively includes: conducting wire from inside to outside 1122, the heating layer 1124 of conducting wire 1122 is wrapped up, the insulating layer 1126 of the heating layer 1124 is wrapped up and wraps up the insulating layer 1126 shielded layer 1128, as shown in figure 3, in this way, can be carried out by conducting wire 1122 and heating layer 1124 to throttling set 108 It heats and electric leakage, heat losses is prevented by insulating layer 1126 and 1128 code wire 1122 of shielded layer；Wherein, insulating layer 1126 can be high density radiant crosslinked polyethylene insulating layer 1126 and shielded layer 1128 can be foil shielding layer 1128, High density radiant crosslinked polyethylene has good impact resistance and insulating properties, can be effectively isolated the anti-leak-stopping of conducting wire 1122 Electricity, and aluminium foil has the characteristics that nontoxic, opaque, plasticity is strong, is a kind of good packaging material.
In any of the above-described technical solution, it is preferable that the bottom of the compressor 102 is provided with temperature-detecting device.
In the technical scheme, temperature-detecting device, Ke Yiyong are arranged by the bottom of the compressor 102 in air-conditioning system Come when the air-conditioning system using combustible refrigerant is in the stifled working condition of easily generation oil, for being filled according to the temperature detection The temperature of 102 bottom of compressor detected is set to judge it is stifled whether air-conditioning system occurs oil, and then determines whether to open setting Heating device 112 at throttling set 108 is stifled with the oil for solving the problems, such as air-conditioning system.
In any of the above-described technical solution, it is preferable that the exhaust ports and/or the compressor 102 of the compressor 102 Gas returning port at be provided with pressure-detecting device and/or temperature-detecting device.
In the technical scheme, pass through time of the exhaust ports of the compressor 102 in air-conditioning system and/or compressor 102 Pressure-detecting device and/temperature-detecting device are set at port, can be used at the air-conditioning system for using combustible refrigerant Compression when easy generation oil stifled working condition, for being detected according to the pressure-detecting device and/or temperature-detecting device Whether pressure value and/or temperature value at the exhaust ports of machine 102 and/or the gas returning port of compressor 102 judge air-conditioning system Oil occurs to block up, and then determines whether that open the heating device 112 being arranged at throttling set 108 is blocked up with the oil for solving air-conditioning system Problem.
In any of the above-described technical solution, it is preferable that the compressor 102, the four-way valve 104, the outdoor heat exchange Device 106, the throttling set 108 and the indoor heat exchanger 110 circuit sequentially connection by copper pipe.
In the technical scheme, by by compressor 102, four-way valve 104, outdoor heat exchanger 106, throttling set 108 with And indoor heat exchanger 110 circuits sequentially connection by copper pipe, so that combustible refrigerant can flow in air-conditioning system pipeline Circulation, realizes the normal operation of air-conditioning system, to guarantee user demand, improves air-conditioning system reliability of operation.
In any of the above-described technical solution, it is preferable that the throttling set 108 includes: electric expansion valve, capillary or section Flow valve.
In the technical scheme, throttling set 108 includes but is not limited to: electric expansion valve, capillary or throttle valve, can be with It realizes the adjusting to refrigerant flow size, realizes that the constant speed of air-conditioning system is adjusted, to be effectively prevented from because of compressor 102 Lubricating oil viscosity causes greatly the oil of throttling set 108 is stifled to make combustible refrigerant that can not participate in recycling, and empty by compressor 102 Turn, system capability and power decline caused 102 motor excessive heating of compressor and influence the use of compressor 102 and air-conditioning system The problem of service life, and then the usage experience of user is effectively promoted, and the spy that capillary has structure simple, cheap Point can reduce the production cost of air-conditioning system.
In any of the above-described technical solution, it is preferable that the default operating condition includes: that the air-conditioning system defrost starts Working condition, the air-conditioning system defrost working condition, the air-conditioning system that terminate be in the working condition of low-temperature heating And the air-conditioning system operates in the working condition lower than default environment temperature；The combustible refrigerant is R290 refrigeration Agent.
In the technical scheme, air-conditioning system easily occurs the stifled default operating condition of oil and includes but is not limited to: air-conditioning system Working condition that working condition that defrost starts, air-conditioning system defrost terminate, air-conditioning system are in booting in low-temperature heating Working condition and air-conditioning system operate in the working condition lower than default environment temperature, wherein defrost terminates, defrost start with And the probability that air-conditioning system occurs that oil blocks up under the working condition of low-temperature heating successively reduces, to sum up, when refrigerant is in air-conditioning When meeting with the system environments of the temperature difference of 30 DEG C of difference or more in system, it is stifled just to will appear oil, and operating in subzero 15 DEG C When environment below, also can oil it is stifled, at subzero 30 DEG C, oil is stifled certainly, in addition, when air-conditioning system be in frequency conversion, badly, it is high When operating condition or cryogenic refrigeration, there is also the stifled situations of oil.
And for how to judge whether air-conditioning system is in default operating condition, specifically, when the four-way valve of air-conditioning system When the postrun accumulative switching times that are switched on are even-times, then it can determine that air-conditioning system is in the working condition that defrost terminates, that When accumulative switching times are odd-times, then it can determine that air-conditioning system is in defrost and starts or be in work during defrost Make state, and the working condition to work in low-temperature heating can be determined according to booting setting parameter, specifically environment temperature can be with Pass through the existing temperature sensor detection of air-conditioning system；In addition, combustible refrigerant is preferably low GWP, does not almost have any dirt R290 (i.e. propane) refrigerant of dye.
Fig. 4 shows the flow diagram of the stifled processing method of air-conditioning system oil according to an embodiment of the invention.
As shown in figure 4, the processing method that air-conditioning system oil according to an embodiment of the invention is stifled, for as above any Air-conditioning system described in embodiment, the refrigerant that the air-conditioning system uses are combustible refrigerant, then the processing method packet It includes: step 402, when detecting that the air-conditioning system in default operating condition occurs oily stifled, opening and be arranged in the section Flow the heating device at device；Step 404, when counting the heating device and opening in running order first operation Between；Step 406, when first runing time reaches the first preset time, detecting the air-conditioning system, whether to occur oil stifled, To perform corresponding processing according to testing result.
The stifled processing method of the air-conditioning system oil that the embodiment of second aspect of the present invention provides, uses combustibility when detecting When occurring oily stifled in the easy air-conditioning system that the working condition that oil blocks up occurs of refrigerant, then need to start processing strategie and come in time The oil for efficiently solving air-conditioning system blocks up problem, and air-conditioning system is made to restore to run well, and then air-conditioning system is avoided to go out because oil is stifled The phenomenon that existing ability decaying, to guarantee the service life of compressor and air-conditioning system, while the use for improving air-conditioning system is comfortable Property, user experience is promoted, specifically, can be heated by opening the heating device being arranged at throttling set for throttling set, Solve the problems, such as that oil is stifled in a manner of making combustible refrigerant smoothly circulate in air-conditioning system by the throttling set, further When heating device, which opens the first in running order runing time, reaches the first preset time, detecting air-conditioning system again is No generation oil is stifled, and determines the processing strategie of next step according to testing result in turn, wherein the value range of the first preset time Are as follows: 5 minutes~10 minutes.
In addition, the processing method that the air-conditioning system oil in above-described embodiment provided by the invention blocks up, can also have following Additional technical feature:
In the above-mentioned technical solutions, it is preferable that the step 406 specifically includes: when first runing time reaches institute State the first preset time, and be not detected the air-conditioning system occur oil it is stifled when, close the heating device；When first fortune The row time reaches first preset time, and detect the air-conditioning system occur oil it is stifled when, count the heating device after Continue the second in running order runing time；And when second runing time reaches the second preset time, institute is detected Stating air-conditioning system, whether to occur oil stifled, to perform corresponding processing according to testing result.
In the technical scheme, when the first runing time for opening heating device reaches the first preset time and detects again When the whether oily stifled result of air-conditioning system is no, the heating device is closed, illustrates that the stifled problem of oil has been efficiently solved；And When the first runing time for opening heating device reaches the first preset time and the again whether oily stifled result of detection air-conditioning system When to be, then continues starting heating device and be at working condition, and when the second operation that heating device continues starting Between when reaching the second preset time, detecting air-conditioning system again, that oil whether occurs is stifled, and under determining according to testing result in turn The processing strategie of one step, in this way, solving the problems, such as that air-conditioning system oil is stifled by way of continuing starting heating device, so that empty Adjusting system restores to run well as early as possible, wherein the value range of the second preset time are as follows: 10 minutes~20 minutes.
In any of the above-described technical solution, it is preferable that it is described when second runing time reaches the second preset time, Detecting the air-conditioning system, whether to occur oil stifled, to perform corresponding processing according to testing result, specifically includes: when described second Runing time reaches second preset time, and detect the air-conditioning system occur oil it is stifled when, prompt air-conditioning described in user The outdoor unit operation troubles of system simultaneously prompts to close the air-conditioning system；It is preset when second runing time reaches described second Time, and be not detected the air-conditioning system occur oil it is stifled when, close the heating device.
In the technical scheme, when the second runing time for continuing starting heating device reaches the second preset time and detection When state stifled still in oil to air-conditioning system, then user's air-conditioning system can be prompted by way of sound, text and/or bright light Outdoor unit operation troubles, and prompt directly close air-conditioning system, make its stoppage in transit, to avoid because oil block up lead to exhaust outlet of compressor Exhaust has some setbacks and makes motor excessive heating, and then causes motor to burn, the irremediable loss such as system crash；Otherwise, it closes Heating device illustrates that the stifled problem of oil has been efficiently solved, and air-conditioning system can be restored to run well.
In any of the above-described technical solution, it is preferable that the default operating condition includes: that the air-conditioning system defrost starts Working condition, the air-conditioning system defrost working condition, the air-conditioning system that terminate be in the working condition of low-temperature heating And the air-conditioning system operates in the working condition lower than default environment temperature；The combustible refrigerant is R290 refrigeration Agent.
In the technical scheme, air-conditioning system easily occurs the stifled default operating condition of oil and includes but is not limited to: air-conditioning system Working condition that working condition that defrost starts, air-conditioning system defrost terminate, air-conditioning system are in booting in low-temperature heating Working condition and air-conditioning system operate in the working condition lower than default environment temperature (for example, -15 DEG C), wherein defrost knot Beam, defrost start and the working condition of low-temperature heating under air-conditioning system the stifled probability of oil occur successively reduce, to sum up, working as When refrigerant meets with the system environments of the temperature difference of 30 DEG C of difference or more within air-conditioning systems, it is stifled just to will appear oil, and transporting Row, also can be oily stifled in subzero 15 DEG C of environment below, and at subzero 30 DEG C, oil is stifled certainly, becomes in addition, working as air-conditioning system and being in Frequently, badly, high operating condition or when cryogenic refrigeration, there is also the stifled situations of oil.
And for how to judge whether air-conditioning system is in default operating condition, specifically, when the four-way valve of air-conditioning system When the postrun accumulative switching times that are switched on are even-times, then it can determine that air-conditioning system is in the working condition that defrost terminates, that When accumulative switching times are odd-times, then it can determine that air-conditioning system is in defrost and starts or be in work during defrost Make state, and the working condition to work in low-temperature heating can be determined according to booting setting parameter, specifically environment temperature can be with Pass through the existing temperature sensor detection of air-conditioning system；In addition, combustible refrigerant is preferably low GWP, does not almost have any dirt R290 (i.e. propane) refrigerant of dye.
It specifically can be when air-conditioning system be in default operating condition, by inspection policies described in following embodiment At least one determine that it is stifled whether air-conditioning system occurs oil:
Embodiment one: pass through the system pressure of the predetermined position of the compressor every the first preset time air-conditioning system Value, and then when decision-making system pressure value is less than or equal to preset pressure value, it determines that air-conditioning system has occurred oil and blocked up, specifically may be used To detect pressure value by the pressure detecting module at the exhaust ports for the compressor that air-conditioning system is arranged in or gas returning port, In, when predeterminated position is the gas returning port of compressor, the value range of preset pressure value is -0.1 megapascal~0.1 megapascal, when pre- If position is the exhaust outlet of compressor, the value range of preset pressure value is 0.5 megapascal~2 megapascal.
Embodiment two: the exhaust by detecting the exhaust ports of the compressor of air-conditioning system respectively every the first preset time Back pressure value at the gas returning port of pressure value and compressor, and then in the difference for determining exhaust pressure value and back pressure value When (preferably absolute value) is less than or equal to preset pressure value (for example, 0.1 atmospheric pressure, i.e. 0.01 megapascal), air-conditioning is determined System has occurred oil and has blocked up, specifically can be by the way that the pressure at the exhaust ports and gas returning port of the compressor of air-conditioning system is arranged in Detection module detects pressure value.
Embodiment three: the exhaust by detecting the exhaust ports of the compressor of air-conditioning system respectively every the first preset time Return air temperature angle value at the gas returning port of temperature value and compressor, and then determining that outlet air temperature and the difference of return air temperature angle value are small When preset temperature value (for example, 40 DEG C), determine that air-conditioning system has occurred oil and blocked up, it specifically can be by being arranged in sky The exhaust ports of the compressor of adjusting system and temperature detecting module at gas returning port detect temperature value.
Example IV: the system temperature by detecting the predetermined position of the compressor of air-conditioning system every the first preset time Angle value, and then when decision-making system temperature value is greater than or equal to preset temperature value, it is stifled to determine that oil has occurred for air-conditioning system, wherein Predetermined position includes: the bottom of the exhaust outlet of compressor, the gas returning port of compressor or compressor, corresponding preset temperature value Value can be with are as follows: 110 DEG C, 110 DEG C, 80 DEG C~150 DEG C (can preferably be 100 DEG C), it specifically can be by being arranged in sky At the exhaust ports of the compressor of adjusting system, gas returning port and the temperature detecting module of bottom detects temperature value.
Embodiment five: the temperature parameter by obtaining air-conditioning system every the first preset time, temperature parameter includes: interior Environment temperature, indoor heat exchanger temperature, outdoor environment temperature and outdoor heat exchanger temperature, specifically, when judgement indoor environment temperature Degree and the absolute value of the difference of indoor heat exchanger temperature are less than or equal to the first preset temperature (for example, 0 DEG C~3 DEG C) and/or room The absolute value of the difference of external environment temperature and outdoor heat exchanger temperature is less than or equal to the second preset temperature (for example, 0 DEG C~3 DEG C) When, determine that the air-conditioning system occurs oil and blocks up, i.e., indoor environment temperature becomes closer to indoor heat exchanger temperature, outdoor ring Border temperature becomes closer to outdoor environment temperature.
Embodiment six: the System current by detecting air-conditioning system every the first preset time, and then in decision-making system When current value is less than or equal to pre-set current value, determine that the air-conditioning system occurs oil and blocks up, air-conditioning system is when generally oil is stifled Decline 50% or so when its normal work of current value ratio of uniting.
Embodiment seven: by detecting the throttling dress that combustible refrigerant flows through air-conditioning system respectively every the first preset time The first system pressure value at first end when after the first end set to the second end of throttling set and the second system at second end System pressure value, and then determining whether the difference of the first system pressure value and second system pressure value is less than or equal to preset pressure When being worth (for example, 0.1 atmospheric pressure, i.e. 0.01 megapascal), determine that the air-conditioning system occurs oil and blocks up, in particular by setting in phase The pressure detecting module at position is answered to detect pressure value.
Embodiment eight: by detecting the throttling set that combustible refrigerant flows through air-conditioning system every first preset time System pressure value at the second end of throttling set when after first end to the second end of throttling set, and then in decision-making system pressure When force value is less than or equal to preset pressure value, determine that the air-conditioning system occurs oil and blocks up, in particular by setting in corresponding position The pressure detecting module at place detects pressure value.
Fig. 5 shows the block diagram of the stifled processing unit of air-conditioning system oil according to an embodiment of the invention.
As shown in figure 5, the processing unit 500 that air-conditioning system oil according to an embodiment of the invention is stifled, for as above Air-conditioning system described in any embodiment, the refrigerant that the air-conditioning system uses are combustible refrigerant, then the processing dress Setting 500 includes: control module 502, statistical module 504 and detection module 506.
Wherein, control module 502, for detecting that it is stifled that oil occurs for the air-conditioning system in default operating condition When, open the heating device being arranged at the throttling set；Statistical module 504 is opened for counting the heating device Open the first in running order runing time；Detection module 506, for when described the first of the statistical module 504 statistics When runing time reaches the first preset time, detecting the air-conditioning system, whether to occur oil stifled, to carry out phase according to testing result The processing answered.
The stifled processing unit 500 of the air-conditioning system oil that the embodiment of third aspect present invention provides, when passing through detection module 506 detect using combustible refrigerant in the air-conditioning system that the stifled working condition of oil easily occurs occur oil it is stifled when, then need Start processing strategie timely and effectively to solve the problems, such as that the oil of air-conditioning system is stifled, makes air-conditioning system restore to run well, in turn It avoids air-conditioning system from the phenomenon that ability decaying occur because oil is stifled, to guarantee the service life of compressor and air-conditioning system, mentions simultaneously The comfort of high air-conditioning system promotes user experience, specifically, unlatching setting can be controlled by control module 502 and is existed Heating device at throttling set is throttling set heating, so that combustible refrigerant is by the throttling set in air-conditioning system The mode smoothly to circulate is oily stifled to solve the problems, such as, further when the heating device counted by statistical module 504 is opened in work When making the first runing time of state and reaching the first preset time, detect whether air-conditioning system is sent out again by detection module 506 Oil generation is stifled, and determines the processing strategie of next step according to testing result in turn.
In addition, the processing unit 500 that air-conditioning system oil in above-described embodiment provided by the invention is stifled, can also have with Lower additional technical feature:
In the above-mentioned technical solutions, it is preferable that the control module 502 is also used to: when the statistical module 504 statistics First runing time reaches first preset time, and the air-conditioning system hair is not detected in the detection module 506 When oil generation blocks up, the heating device is closed in control；The statistical module 504 is also used to: when the institute of the statistical module 504 statistics It states the first runing time and reaches first preset time, and the detection module 506 detects that oil occurs for the air-conditioning system When stifled, the second runing time that the heating device keeps working condition is counted；And the detection module 506 is also used In: when second runing time of the statistical module 504 statistics reaches the second preset time, detect the air-conditioning system It is stifled that whether oil is occurred, to perform corresponding processing according to testing result.
In the technical scheme, when the first runing time of the unlatching heating device counted by statistical module 504 reaches First preset time and when detect air-conditioning system again by detection module 506 whether the stifled result of oil is no, passes through control mould The heating device is closed in the control of block 502, illustrates that the stifled problem of oil has been efficiently solved；And it unites when by statistical module 504 First runing time of the unlatching heating device of meter reaches the first preset time and detects air-conditioning system again by detection module 506 Whether the stifled result of oil is then to continue starting heating device when being by the control of control module 502 and be at working condition to system, And when the second runing time that the heating device counted by statistical module 504 continues starting reaches the second preset time, It detects air-conditioning system again by detection module 506 and whether occurs that oil is stifled, and determine next step according to testing result in turn Processing strategie, in this way, solving the problems, such as that air-conditioning system oil is stifled by way of continuing starting heating device, so that air-conditioning system Restore to run well as early as possible.
In any of the above-described technical solution, it is preferable that further include: cue module 508, for working as the statistical module 504 Second runing time of statistics reaches second preset time, and the detection module 506 detects the air-conditioning system When system occurs oily stifled, prompts the outdoor unit operation troubles of air-conditioning system described in user and the control of control module 502 is prompted to close Close the air-conditioning system；And the control module 502 is also used to: when second operation of the statistical module 504 statistics Time reaches second preset time, and the detection module 506 be not detected the air-conditioning system occur oil it is stifled when, control Close the heating device.
In the technical scheme, when the second runing time for continuing starting heating device that statistical module 504 counts reaches Second preset time and when detecting stifled still in the oil state of air-conditioning system by detecting mould, then can pass through cue module 508 The outdoor unit operation troubles of user's air-conditioning system is prompted in a manner of sound, text and/or bright light, and prompts control module 502 Closing air-conditioning system is directly controlled, its stoppage in transit is made, causes exhaust outlet of compressor exhaust to make motor mistake due to having some setbacks to avoid because oil is stifled Degree fever, and then cause motor to burn, the irremediable loss such as system crash；Otherwise, it is controlled and is closed by control module 502 Heating device illustrates that the stifled problem of oil has been efficiently solved, and air-conditioning system can be restored to run well.
In any of the above-described technical solution, it is preferable that the default operating condition includes: that the air-conditioning system defrost starts Working condition, the air-conditioning system defrost working condition, the air-conditioning system that terminate be in the working condition of low-temperature heating And the air-conditioning system operates in the working condition lower than default environment temperature；The combustible refrigerant is R290 refrigeration Agent.
In the technical scheme, air-conditioning system easily occurs the stifled default operating condition of oil and includes but is not limited to: air-conditioning system Working condition that working condition that defrost starts, air-conditioning system defrost terminate, air-conditioning system are in booting in low-temperature heating Working condition and air-conditioning system operate in the working condition lower than default environment temperature, wherein defrost terminates, defrost start with And the probability that air-conditioning system occurs that oil blocks up under the working condition of low-temperature heating successively reduces, to sum up, when refrigerant is in air-conditioning When meeting with the system environments of the temperature difference of 30 DEG C of difference or more in system, it is stifled just to will appear oil, and operating in subzero 15 DEG C When environment below, also can oil it is stifled, at subzero 30 DEG C, oil is stifled certainly, in addition, when air-conditioning system be in frequency conversion, badly, it is high When operating condition or cryogenic refrigeration, there is also the stifled situations of oil.
And for how to judge whether air-conditioning system is in default operating condition, specifically, when the four-way valve of air-conditioning system When the postrun accumulative switching times that are switched on are even-times, then it can determine that air-conditioning system is in the working condition that defrost terminates, that When accumulative switching times are odd-times, then it can determine that air-conditioning system is in defrost and starts or be in work during defrost Make state, and the working condition to work in low-temperature heating can be determined according to booting setting parameter, specifically environment temperature can be with Pass through the existing temperature sensor detection of air-conditioning system；In addition, combustible refrigerant is preferably low GWP, does not almost have any dirt R290 (i.e. propane) refrigerant of dye.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, and can timely and effectively solve the problems, such as that oil is stifled makes sky Adjusting system restores to run well, and then air-conditioning system is avoided the phenomenon that ability decaying occur because oil is stifled, to guarantee compressor and sky The service life of adjusting system, while the comfort of air-conditioning system is improved, user experience is promoted, while also new for research from now on Type compressor lubricant oil preferably matches new cooling media and provides a kind of reference frame.
In the present invention, term " first ", " second " are only used for the purpose described, are not understood to indicate or imply phase To importance.For the ordinary skill in the art, it can understand as the case may be above-mentioned term in the present invention Concrete meaning.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (7)

1. a kind of air-conditioning system, which is characterized in that the refrigerant that the air-conditioning system uses is combustible refrigerant, the air-conditioning System includes:
Circuit sequentially compressor, four-way valve, outdoor heat exchanger, throttling set and the indoor heat exchanger of connection；
Heating device is provided at the throttling set；
Pressure detecting module is arranged at exhaust ports and the gas returning port of the compressor, by every third preset time point The back pressure value at the exhaust pressure value of the exhaust ports of the compressor and the gas returning port of the compressor is not detected, in turn When the difference for determining the exhaust pressure value and the back pressure value is less than or equal to preset pressure value, the air-conditioning is determined It is stifled that oil has occurred for system；
The heating device is specifically used for: when the air-conditioning system default operating condition issue oil generation it is stifled when, heat the section Device is flowed, so that the combustible refrigerant recycles in the air-conditioning system through the throttling set；And
The heating device is anti-explosion heating band.
2. a kind of stifled processing method of air-conditioning system oil, which is characterized in that be used for air-conditioning system as described in claim 1, institute Stating the refrigerant that air-conditioning system uses is combustible refrigerant, then the treating method comprises:
When detecting that the air-conditioning system in default operating condition occurs oily stifled, opens and be arranged at the throttling set The heating device；
It counts the heating device and opens the first in running order runing time；
When first runing time reaches the first preset time, detecting the air-conditioning system, whether to occur oil stifled, with basis Testing result performs corresponding processing；
Wherein, described when first runing time reaches the first preset time, detect whether the air-conditioning system occurs oil It is stifled, to perform corresponding processing according to testing result, specifically include:
When first runing time reaches first preset time, and be not detected the air-conditioning system occur oil it is stifled when, Close the heating device；
When first runing time reaches first preset time, and detects that the air-conditioning system occurs oily stifled, system Count the second runing time that the heating device keeps working condition；And
When second runing time reaches the second preset time, detecting the air-conditioning system, whether to occur oil stifled, with basis Testing result performs corresponding processing；
Wherein, by detected respectively every third preset time the exhaust ports of the compressor exhaust pressure value and the pressure Back pressure value at the gas returning port of contracting machine, and then be less than in the difference of the judgement exhaust pressure value and the back pressure value Or when being equal to preset pressure value, it is stifled to determine that oil has occurred for the air-conditioning system.
3. the stifled processing method of air-conditioning system oil according to claim 2, which is characterized in that described when second operation When time reaches the second preset time, detecting the air-conditioning system, whether to occur oil stifled, corresponding to carry out according to testing result Processing, specifically includes:
When second runing time reaches second preset time, and detects that the air-conditioning system occurs oily stifled, mention Show the outdoor unit operation troubles of air-conditioning system described in user and prompts to close the air-conditioning system；
When second runing time reaches second preset time, and be not detected the air-conditioning system occur oil it is stifled when, Close the heating device.
4. the stifled processing method of air-conditioning system oil according to claim 2 or 3, which is characterized in that
The default operating condition includes: that the working condition that starts of the air-conditioning system defrost, the air-conditioning system defrost terminate Working condition, the air-conditioning system is in the working condition of low-temperature heating and the air-conditioning system is operated in lower than default ring The working condition of border temperature；
The combustible refrigerant is R290 refrigerant.
5. a kind of stifled processing unit of air-conditioning system oil, which is characterized in that be used for air-conditioning system as described in claim 1, institute Stating the refrigerant that air-conditioning system uses is combustible refrigerant, then the processing unit includes:
Control module, for opening setting and existing when detecting that the air-conditioning system in default operating condition occurs oily stifled The heating device at the throttling set；
Statistical module opens the first in running order runing time for counting the heating device；
Detection module, for detecting when first runing time of the statistical module counts reaches the first preset time Whether the air-conditioning system, which occurs oil, is blocked up, to perform corresponding processing according to testing result；
The control module is also used to: when first runing time of the statistical module counts reach described first it is default when Between, and the detection module be not detected the air-conditioning system occur oil it is stifled when, the heating device is closed in control；
The statistical module is also used to: when first runing time of the statistical module counts reach described first it is default when Between, and the detection module detect the air-conditioning system occur oil it is stifled when, count the heating device and keep work shape Second runing time of state；And
The detection module is also used to: when second runing time of the statistical module counts reaches the second preset time When, detecting the air-conditioning system, whether to occur oil stifled, to perform corresponding processing according to testing result；
The detection module is also used to: the exhaust by detecting the exhaust ports of the compressor respectively every third preset time Back pressure value at the gas returning port of pressure value and the compressor, and then determining the exhaust pressure value and the return-air pressure When the difference of force value is less than or equal to preset pressure value, it is stifled to determine that oil has occurred for the air-conditioning system.
6. the stifled processing unit of air-conditioning system oil according to claim 5, which is characterized in that further include:
Cue module reaches second preset time for second runing time when the statistical module counts, and When the detection module detects that the air-conditioning system occurs oily stifled, the outdoor unit operation troubles of air-conditioning system described in user is prompted And the control module control is prompted to close the air-conditioning system；And
The control module is also used to: when second runing time of the statistical module counts reach described second it is default when Between, and the detection module be not detected the air-conditioning system occur oil it is stifled when, the heating device is closed in control.
7. the stifled processing unit of air-conditioning system oil according to claim 5 or 6, which is characterized in that
The default operating condition includes: that the working condition that starts of the air-conditioning system defrost, the air-conditioning system defrost terminate Working condition, the air-conditioning system is in the working condition of low-temperature heating and the air-conditioning system is operated in lower than default ring The working condition of border temperature；
The combustible refrigerant is R290 refrigerant.
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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
CN108105940B (en) * 2017-11-29 2020-06-23 广东美的制冷设备有限公司 Air conditioner oil blockage fault detection method and air conditioner
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