CN105546641A - Air conditioning system, and processing method and device for oil blockage of air conditioning system - Google Patents

Air conditioning system, and processing method and device for oil blockage of air conditioning system Download PDF

Info

Publication number
CN105546641A
CN105546641A CN201511034576.0A CN201511034576A CN105546641A CN 105546641 A CN105546641 A CN 105546641A CN 201511034576 A CN201511034576 A CN 201511034576A CN 105546641 A CN105546641 A CN 105546641A
Authority
CN
China
Prior art keywords
conditioning system
air
flow
guiding channel
stifled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201511034576.0A
Other languages
Chinese (zh)
Other versions
CN105546641B (en
Inventor
刘旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea Refrigeration Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201511034576.0A priority Critical patent/CN105546641B/en
Publication of CN105546641A publication Critical patent/CN105546641A/en
Application granted granted Critical
Publication of CN105546641B publication Critical patent/CN105546641B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

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

Abstract

The invention provides an air conditioning system, and a processing method and device for oil blockage of the air conditioning system. Refrigerants used by the air conditioning system are flammable refrigerants. The processing method used for the air conditioning system includes the steps that when the situation that the air conditioning system in a preset work state has an oil blockage problem is detected, a first flow guide passage and/or a second flow guide passage are/is opened; the first operation time that the first flow guide passage and/or a second flow guide passage are/is opened and in the work state is measured; and when the first operation time reaches first preset time, whether the air conditioning system has the oil blockage problem or not is detected, and corresponding measures are taken according to the detection result. By means of the technical scheme, the oil blockage problem can be effectively solved in time, the air conditioning system is made to recover normal operation, then the capability attenuation phenomenon of the air conditioning system caused by oil blockage is avoided, the service life of a press and the air conditioning system is guaranteed, and meanwhile the use comfort of the air conditioning system is improved.

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: electric-controlled box; Circulate compressor, cross valve, outdoor heat exchanger, throttling arrangement and indoor heat exchanger successively that be communicated with; First flow-guiding channel and/or the second flow-guiding channel; The Single port of described first flow-guiding channel and the electric-controlled box of described air-conditioning system is oppositely arranged, another port and described throttling arrangement are oppositely arranged, for the heat transporting that will produce in the described electric-controlled box course of work to described throttling arrangement place; Single port and the described compressor of described second flow-guiding channel are oppositely arranged, the other end is positioned at described throttling arrangement and is oppositely arranged, for the heat transporting extremely described throttling arrangement place will produced in described compressor operation.
The air-conditioning system that the embodiment of first aspect present invention provides, comprise: electric-controlled box, circulate compressor successively that be communicated with, cross valve, outdoor heat exchanger, throttling arrangement and indoor heat exchanger, wherein, electric-controlled box is for driving compressor operating, and also comprise for by the heat produced in electric-controlled box course of work transporting to the first flow-guiding channel of throttling arrangement and/or be used for the heat transporting that produces in compressor operation to the second flow-guiding channel of throttling arrangement, so, can whether oil blocks up controls whether to open the first flow-guiding channel and/or the second flow-guiding channel according to air-conditioning system, such as, can by arranging switch to realize the control to its on off state in the first flow-guiding channel and/or the second flow-guiding channel, the internal heat produced in the air-conditioning system course of work is used for for throttling arrangement heating, 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, also comprise: air-supply arrangement, described air-supply arrangement is arranged at described throttling arrangement place, for by the blowing heat of described first flow-guiding channel and/or described second flow-guiding channel to described throttling arrangement.
In this technical scheme, air-conditioning system also comprises the air-supply arrangement being arranged on throttling arrangement place, to pass through the blowing heat of the first corresponding flow-guiding channel and/or the transmission of the second flow-guiding channel to throttling arrangement by by electric-controlled box and/or compressor better, solve the stifled efficiency of air-conditioning system oil to improve, thus promote Consumer's Experience.
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 described first flow-guiding channel and/or described second flow-guiding channel; Add up described first flow-guiding channel and/or described second flow-guiding channel opens 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 by open by the heat transporting produced in the electric-controlled box course of work to the first flow-guiding channel of throttling arrangement and/or by the heat transporting that produces in compressor operation to the second flow-guiding channel of throttling arrangement, such as, can by arranging switch to realize the control to its on off state in the first flow-guiding channel and/or the second flow-guiding channel, with the internal heat by producing in the air-conditioning system course of work for throttling arrangement heats, and then make combustible refrigerant solve the stifled problem of oil by the mode of this throttling arrangement circulation smoothly in air-conditioning system, further when the first flow-guiding channel and/or the second flow-guiding channel 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 first flow-guiding channel and/or described second flow-guiding channel; And reach described first Preset Time when described first running time, and detect described air-conditioning system occur oil stifled time, add up the second running time that described first flow-guiding channel and/or described second flow-guiding channel keep duty; 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 the first running time of unlatching first flow-guiding channel and the/the second flow-guiding channel reach the first Preset Time and again to detect the air-conditioning system result whether oil is stifled be no time, close this first flow-guiding channel and the/the second flow-guiding channel, illustrate that the stifled problem of oil has obtained and effectively solve, and when unlatching first flow-guiding channel and the first running time of the/the second flow-guiding channel reaching the first Preset Time and again detect the air-conditioning system result whether oil blocks up for being, then continuing unlatching first flow-guiding channel makes it in running order with the/the second flow-guiding channel, and when reaching the second Preset Time the second running time that the first flow-guiding channel and the/the second flow-guiding channel continue 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 unlatching first flow-guiding channel and the/the second flow-guiding channel transporting heat, 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 first flow-guiding channel and/or described second flow-guiding channel.
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 unlatching first flow-guiding channel and the/the second flow-guiding channel, 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 the first flow-guiding channel and the/the second flow-guiding channel, 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 described first flow-guiding channel and/or described second flow-guiding channel; Statistical module, for adding up described first flow-guiding channel and/or described second flow-guiding channel opens the first in running order running time; 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 by control module control to open by the heat transporting produced in the electric-controlled box course of work to the first flow-guiding channel of throttling arrangement and/or by the heat transporting that produces in compressor operation to the second flow-guiding channel of throttling arrangement, such as, can by arranging switch to realize the control to its on off state in the first flow-guiding channel and/or the second flow-guiding channel, with the internal heat by producing in the air-conditioning system course of work for throttling arrangement heats, and then make combustible refrigerant solve the stifled problem of oil by the mode of this throttling arrangement circulation smoothly in air-conditioning system, further when opened by the first flow-guiding channel of statistical module counts and/or the second flow-guiding channel 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 first flow-guiding channel and/or described second flow-guiding channel; And 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 first flow-guiding channel and/or described second flow-guiding channel keep duty; 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, when by unlatching first flow-guiding channel of statistical module counts and the first running time of the/the second flow-guiding channel reach the first Preset Time and by detection module, again to detect the air-conditioning system result whether oil is stifled be no time, control to close this first flow-guiding channel and the/the second flow-guiding channel by control module, illustrate that the stifled problem of oil has obtained and effectively solve, and when reaching the first Preset Time by unlatching first flow-guiding channel of statistical module counts and the first running time of the/the second flow-guiding channel and again detected the air-conditioning system result whether oil blocks up by detection module for being, then controlling to continue unlatching first flow-guiding channel by control module makes it in running order with the/the second flow-guiding channel, and when reaching the second Preset Time the second running time that the first flow-guiding channel and the/the second flow-guiding channel 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 unlatching first flow-guiding channel and the/the second flow-guiding channel transporting heat, 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 first flow-guiding channel and/or described second flow-guiding channel.
In this technical scheme, when reaching the second Preset Time and detect that air-conditioning system is still in oily stifled state by detection module the second running time that the first flow-guiding channel and the/the second flow-guiding channel are opened in the continuation by statistical module counts, then can by reminding module 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 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 closedown first flow-guiding channel and the/the second flow-guiding channel 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 block diagram of air-conditioning system according to an embodiment of the invention;
Fig. 2 shows the schematic flow sheet of the stifled processing method of air-conditioning system according to an embodiment of the invention oil;
Fig. 3 shows the block diagram of the stifled treating apparatus of air-conditioning system according to an embodiment of the invention oil.
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 block diagram of air-conditioning system 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: electric-controlled box 102; Circulate compressor 104, cross valve 106, outdoor heat exchanger 108, throttling arrangement 110 and indoor heat exchanger 112 successively that be communicated with; First flow-guiding channel 114 and/or the second flow-guiding channel 116; The described Single port of the first flow-guiding channel 114 and electric-controlled box 102 of described air-conditioning system is oppositely arranged, another port and described throttling arrangement 110 are oppositely arranged, for the heat transporting that will produce in described electric-controlled box 102 course of work to described throttling arrangement 110 place; The Single port of described second flow-guiding channel 116 and described compressor 104 is oppositely arranged, the other end is positioned at described throttling arrangement 110 and is oppositely arranged, for the heat transporting that will produce in described compressor 104 course of work to described throttling arrangement 110 place.
Air-conditioning system according to an embodiment of the invention, comprise: electric-controlled box 102, circulate compressor 104 successively that be communicated with, cross valve 106, outdoor heat exchanger 108, throttling arrangement 110 and indoor heat exchanger 112, wherein, electric-controlled box 102 works for driving compressor 104, and also comprise for by the heat transporting produced in electric-controlled box 102 course of work to the first flow-guiding channel 114 of throttling arrangement 110 and/or be used for the heat transporting that produces in compressor 104 course of work to the second flow-guiding channel 116 of throttling arrangement 110, so, can whether oil blocks up controls whether to open the first flow-guiding channel 114 and/or the second flow-guiding channel 116 according to air-conditioning system, such as, can by arranging switch to realize the control to its on off state in the first flow-guiding channel 114 and/or the second flow-guiding channel 116, the internal heat produced in the air-conditioning system course of work is used for for throttling arrangement 110 heats, 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 104 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 first flow-guiding channel 114 and/or described second flow-guiding channel 116 specifically for: when described air-conditioning system default operating condition issue oil generation block up time, open in running order, with heat transporting extremely described throttling arrangement 110 place will produced in described electric-controlled box 102 and/or compressor 104 course of work accordingly.
In this technical scheme, when the default operating condition of air-conditioning system issue oil generation block up time, then can be arranged on the electric-controlled box 102 of air-conditioning system and/or the first flow-guiding channel 114 and/or the second flow-guiding channel 116 corresponding between compressor 104 with throttling arrangement 110 by opening, with the heat transporting will produced in electric-controlled box 102 and/or compressor 104 course of work to throttling arrangement 110, think that it heats, and then the combustible refrigerant in air-conditioning system and compressor 104 lubricating oil can be made to circulate through this throttling arrangement 110 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, the power model driving described compressor 104 to work is placed with in described electric-controlled box 102; And the Single port of described first flow-guiding channel 114 position corresponding with the described power model position of described electric-controlled box 102 is oppositely arranged; And/or the exhaust outlet of the Single port of described second flow-guiding channel 116 and described compressor 104, gas returning port and/or bottom are oppositely arranged.
In this technical scheme, in order to avoid heat waste, by the heat transporting that produces in better electric-controlled box 102 course of work to throttling arrangement 110, then the position at the power model place in the port of the first guiding device of electric-controlled box 102 side and electric-controlled box 102 can be oppositely arranged; And the port of compressor 104 side for the second flow-guiding channel 116, can with the exhaust outlet of compressor 104, gas returning port and/or compressor 104 bottom be oppositely arranged, the heat transporting produced in compressor 104 course of work to throttling arrangement 110 to be solved the stifled problem of air-conditioning system oil.
In above-mentioned arbitrary technical scheme, preferably, also comprise: air-supply arrangement 118, described air-supply arrangement 118 is arranged at described throttling arrangement 110 place, for by the blowing heat of described first flow-guiding channel 114 and/or described second flow-guiding channel 116 to described throttling arrangement 110.
In this technical scheme, air-conditioning system also comprises the air-supply arrangement 118 being arranged on throttling arrangement 110 place, with the blowing heat better the first flow-guiding channel 114 and/or the second flow-guiding channel 116 that are passed through correspondence by electric-controlled box 102 and/or compressor 104 transmitted to throttling arrangement 110, solve the stifled efficiency of air-conditioning system oil to improve, thus promote Consumer's Experience.
In above-mentioned arbitrary technical scheme, preferably, when described air-conditioning system comprises described first flow-guiding channel 114 and described second flow-guiding channel 116, same port is merged in the another port of described first flow-guiding channel 114 and the another port of described second flow-guiding channel 116, to be oppositely arranged with described throttling arrangement 110.
In this technical scheme, when be provided with in air-conditioning system simultaneously for by the heat transporting produced in electric-controlled box 102 course of work to the first flow-guiding channel 114 of throttling arrangement 110 and to be used for the heat transporting that produces in compressor 104 course of work to the second flow-guiding channel 116 of throttling arrangement 110 time, then the port of the first flow-guiding channel 114 of throttling arrangement 110 side and the second flow-guiding channel 116 can be merged into a port be oppositely arranged with throttling arrangement 110, to concentrate transporting to throttling arrangement 110 thermal source in air-conditioning system, improve and solve the stifled efficiency of air-conditioning system oil.
In above-mentioned arbitrary technical scheme, preferably, the bottom of described compressor 104 is provided with temperature-detecting device.
In this technical scheme, by the bottom set temperature checkout gear of the compressor 104 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 104 that detects according to this temperature-detecting device stifled, and then determine whether that unlatching first flow-guiding channel 114 and/or the second flow-guiding channel 116 block up problem with the oil solving air-conditioning system.
In above-mentioned arbitrary technical scheme, preferably, the exhaust ports of described compressor 104 and/or the gas returning port place of described compressor 104 are provided with pressure-detecting device and/or temperature-detecting device.
In this technical scheme, by the exhaust ports of the compressor 104 in air-conditioning system and/or the gas returning port place of compressor 104, 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 104 that detects according to this pressure-detecting device and/or temperature-detecting device and/or the gas returning port place of compressor 104 and/or temperature value stifled, and then determine whether that unlatching first flow-guiding channel 114 and/or the second flow-guiding channel 116 block up problem with the oil solving air-conditioning system.
In above-mentioned arbitrary technical scheme, preferably, described compressor 104, described cross valve 106, described outdoor heat exchanger 108, described throttling arrangement 110 and described indoor heat exchanger 112 to be circulated connection successively by copper pipe.
In this technical scheme, by compressor 104, cross valve 106, outdoor heat exchanger 108, throttling arrangement 110 and indoor heat exchanger 112 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 110 comprises: electric expansion valve, capillary or choke valve.
In this technical scheme, throttling arrangement 110 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 104 to cause greatly the stifled combustible refrigerant that makes of throttling arrangement 110 oil cannot participate in circulation, and dallied by compressor 104, the compressor 104 motor excessive heating that system capability and power drop cause affects the problem in the service life of compressor 104 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. 2 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 2, 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 202, when detecting that oily blocking up occurs the described air-conditioning system being in default operating condition, open described first flow-guiding channel and/or described second flow-guiding channel; Step 204, adds up described first flow-guiding channel and/or described second flow-guiding channel opens the first in running order running time; Whether step 206, 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 by open by the heat transporting produced in the electric-controlled box course of work to the first flow-guiding channel of throttling arrangement and/or by the heat transporting that produces in compressor operation to the second flow-guiding channel of throttling arrangement, such as, can by arranging switch to realize the control to its on off state in the first flow-guiding channel and/or the second flow-guiding channel, with the internal heat by producing in the air-conditioning system course of work for throttling arrangement heats, and then make combustible refrigerant solve the stifled problem of oil by the mode of this throttling arrangement circulation smoothly in air-conditioning system, further when the first flow-guiding channel and/or the second flow-guiding channel 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 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 first flow-guiding channel and/or described second flow-guiding channel; And reach described first Preset Time when described first running time, and detect described air-conditioning system occur oil stifled time, add up the second running time that described first flow-guiding channel and/or described second flow-guiding channel keep duty; 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 the first running time of unlatching first flow-guiding channel and the/the second flow-guiding channel reach the first Preset Time and again to detect the air-conditioning system result whether oil is stifled be no time, close this first flow-guiding channel and the/the second flow-guiding channel, illustrate that the stifled problem of oil has obtained and effectively solve, and when unlatching first flow-guiding channel and the first running time of the/the second flow-guiding channel reaching the first Preset Time and again detect the air-conditioning system result whether oil blocks up for being, then continuing unlatching first flow-guiding channel makes it in running order with the/the second flow-guiding channel, and when reaching the second Preset Time the second running time that the first flow-guiding channel and the/the second flow-guiding channel continue 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 unlatching first flow-guiding channel and the/the second flow-guiding channel transporting heat, recover as early as possible to make air-conditioning system to run well.
In above-mentioned arbitrary technical scheme, preferably, described step 206 specifically comprises: 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 first flow-guiding channel and/or described second flow-guiding channel.
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 unlatching first flow-guiding channel and the/the second flow-guiding channel, 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 the first flow-guiding channel and the/the second flow-guiding channel, illustrate that the stifled problem of oil has obtained and effectively solve, air-conditioning system can be recovered to run well, and wherein, the span of the second Preset Time is: 10 minutes ~ 20 minutes.
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. 3 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 3, the treating apparatus 300 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 300 comprises: control module 302, statistical module 304 and detection module 306.
Wherein, control module 302, for when detecting that oily blocking up occurs the described air-conditioning system being in default operating condition, opens described first flow-guiding channel and/or described second flow-guiding channel; Statistical module 304, for adding up described first flow-guiding channel and/or described second flow-guiding channel opens the first in running order running time; Whether detection module 306, for when reaching the first Preset Time described first running time that described statistical module 304 is added up, detecting described air-conditioning system and occurring oily stifled, to process accordingly according to testing result.
The treating apparatus 300 that the air-conditioning system oil that the embodiment of third aspect present invention provides is stifled, when being detected that by detection module 306 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 by control module 302 control to open by the heat transporting produced in the electric-controlled box course of work to the first flow-guiding channel of throttling arrangement and/or by the heat transporting that produces in compressor operation to the second flow-guiding channel of throttling arrangement, such as, can by arranging switch to realize the control to its on off state in the first flow-guiding channel and/or the second flow-guiding channel, with the internal heat by producing in the air-conditioning system course of work for throttling arrangement heats, and then make combustible refrigerant solve the stifled problem of oil by the mode of this throttling arrangement circulation smoothly in air-conditioning system, further when the first flow-guiding channel added up by statistical module 304 and/or the second flow-guiding channel open reach the first Preset Time the first in running order running time time, whether again detect air-conditioning system by detection module 306 occurs oily stifled, and and then determine next step processing policy according to testing result.
In addition, the treating apparatus 300 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 302 also for: reach described first Preset Time when described first running time that described statistical module 304 is added up, and described detection module 306 do not detect described air-conditioning system occur oil stifled time, control to close described first flow-guiding channel and/or described second flow-guiding channel; And described statistical module 304 also for: reach described first Preset Time when described first running time that described statistical module 304 is added up, and described detection module 306 detect described air-conditioning system occur oil stifled time, add up the second running time that described first flow-guiding channel and/or described second flow-guiding channel keep duty; Described detection module 306 also for: when reaching the second Preset Time described second running time that described statistical module 304 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 unlatching first flow-guiding channel added up by statistical module 304 and the/the second flow-guiding channel and is again detected the air-conditioning system result whether oil blocks up by detection module 306 be no time, control to close this first flow-guiding channel and the/the second flow-guiding channel by control module 302, 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 unlatching first flow-guiding channel added up by statistical module 304 and the/the second flow-guiding channel and again detected the air-conditioning system result whether oil blocks up by detection module 306 for being, then controlling to continue unlatching first flow-guiding channel by control module 302 makes it in running order with the/the second flow-guiding channel, and when reaching the second Preset Time the second running time that the first flow-guiding channel added up by statistical module 304 and the/the second flow-guiding channel continue to open, whether detect air-conditioning system again by detection module 306 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 unlatching first flow-guiding channel and the/the second flow-guiding channel transporting heat, recover as early as possible to make air-conditioning system to run well.
In above-mentioned arbitrary technical scheme, preferably, also comprise: reminding module 308, for reaching described second Preset Time when described second running time that described statistical module 304 is added up, and described detection module 306 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 302 to control to close described air-conditioning system; And described control module 302 also for: reach described second Preset Time when described second running time that described statistical module 304 is added up, and described detection module 306 do not detect described air-conditioning system occur oil stifled time, control to close described first flow-guiding channel and/or described second flow-guiding channel.
In this technical scheme, when reaching the second Preset Time and detect that air-conditioning system is still in oily stifled state by detection module 306 the second running time that the first flow-guiding channel and the/the second flow-guiding channel are opened in the continuation added up by statistical module 304, then can by reminding module 308 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 302 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 closedown first flow-guiding channel and the/the second flow-guiding channel by control module 302, 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.
In the inventive solutions, also can without the need to arranging switch to realize the control to its on off state in the first flow-guiding channel and/or the second flow-guiding channel, namely when air-conditioning system opens running by the heat that produces in electric-controlled box and/or compressor operation by the first through flow-guiding channel and/or the real-time transporting of the second flow-guiding channel to throttling arrangement.
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:
Electric-controlled box;
Circulate compressor, cross valve, outdoor heat exchanger, throttling arrangement and indoor heat exchanger successively that be communicated with;
First flow-guiding channel and/or the second flow-guiding channel;
The Single port of described first flow-guiding channel and the electric-controlled box of described air-conditioning system is oppositely arranged, another port and described throttling arrangement are oppositely arranged, for the heat transporting that will produce in the described electric-controlled box course of work to described throttling arrangement place;
Single port and the described compressor of described second flow-guiding channel are oppositely arranged, the other end is positioned at described throttling arrangement and is oppositely arranged, for the heat transporting extremely described throttling arrangement place will produced in described compressor operation.
2. air-conditioning system according to claim 1, it is characterized in that, also comprise: air-supply arrangement, described air-supply arrangement is arranged at described throttling arrangement place, for by the blowing heat of described first flow-guiding channel and/or described second flow-guiding channel to described throttling arrangement.
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 described first flow-guiding channel and/or described second flow-guiding channel;
Add up described first flow-guiding channel and/or described second flow-guiding channel opens 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 first flow-guiding channel and/or described second flow-guiding channel; And
Reach described first Preset Time when described first running time, and detect described air-conditioning system occur oil stifled time, add up the second running time that described first flow-guiding channel and/or described second flow-guiding channel keep duty;
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 first flow-guiding channel and/or described second flow-guiding channel.
6. the processing method that the air-conditioning system oil according to any one of claim 3 to 5 is stifled, it 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 described first flow-guiding channel and/or described second flow-guiding channel;
Statistical module, for adding up described first flow-guiding channel and/or described second flow-guiding channel opens the first in running order running time;
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 first flow-guiding channel and/or described second flow-guiding channel; And
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 first flow-guiding channel and/or described second flow-guiding channel keep duty;
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 first flow-guiding channel and/or described second flow-guiding channel.
10. the treating apparatus that the air-conditioning system oil according to any one of claim 7 to 9 is stifled, it 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.
CN201511034576.0A 2015-12-31 2015-12-31 Air-conditioning system, air-conditioning system oil stifled processing method and processing unit Active CN105546641B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201511034576.0A CN105546641B (en) 2015-12-31 2015-12-31 Air-conditioning system, air-conditioning system oil stifled processing method and processing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511034576.0A CN105546641B (en) 2015-12-31 2015-12-31 Air-conditioning system, air-conditioning system oil stifled processing method and processing unit

Publications (2)

Publication Number Publication Date
CN105546641A true CN105546641A (en) 2016-05-04
CN105546641B CN105546641B (en) 2018-03-27

Family

ID=55826022

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201511034576.0A Active CN105546641B (en) 2015-12-31 2015-12-31 Air-conditioning system, air-conditioning system oil stifled processing method and processing unit

Country Status (1)

Country Link
CN (1) CN105546641B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110173833A (en) * 2019-05-27 2019-08-27 广东美的制冷设备有限公司 Air conditioner and its control method and device
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096708A (en) * 1975-11-28 1978-06-27 Danfoss A/S Compressor refrigeration plant
CN102767926A (en) * 2012-07-03 2012-11-07 海尔集团公司 Capillary anti-blocking structural assembly of low-temperature refrigerator and controlling method for assembly
CN203908132U (en) * 2014-05-30 2014-10-29 广东美的制冷设备有限公司 Air conditioning system
CN204555454U (en) * 2015-03-24 2015-08-12 广东美的制冷设备有限公司 Orifice union and air-conditioning system
CN205448013U (en) * 2015-12-31 2016-08-10 广东美的制冷设备有限公司 Air conditioning system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096708A (en) * 1975-11-28 1978-06-27 Danfoss A/S Compressor refrigeration plant
CN102767926A (en) * 2012-07-03 2012-11-07 海尔集团公司 Capillary anti-blocking structural assembly of low-temperature refrigerator and controlling method for assembly
CN203908132U (en) * 2014-05-30 2014-10-29 广东美的制冷设备有限公司 Air conditioning system
CN204555454U (en) * 2015-03-24 2015-08-12 广东美的制冷设备有限公司 Orifice union and air-conditioning system
CN205448013U (en) * 2015-12-31 2016-08-10 广东美的制冷设备有限公司 Air conditioning system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110173833A (en) * 2019-05-27 2019-08-27 广东美的制冷设备有限公司 Air conditioner and its control method and device
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

Also Published As

Publication number Publication date
CN105546641B (en) 2018-03-27

Similar Documents

Publication Publication Date Title
CN105546749A (en) Air conditioning system, and processing method and device for oil blockage of air conditioning system
CN105465970A (en) Disposal method and disposal device for greasy blockage of air conditioner system and air conditioner
CN105570987A (en) Air conditioning system and oil blockage treatment method and treatment device of air conditioning system
CN102770715B (en) Air conditioner
CN108195099B (en) Variable frequency multi-split air conditioner and control method thereof
CN106091505A (en) The defrosting control method of air-conditioner, defrosting control device and air-conditioner
CN103363600A (en) Heat pump type air conditioner
CN105444366A (en) Oil blockage detecting method and detecting device of air conditioning system and air conditioner
CN104613668A (en) Combined air-conditioning system as well as control method thereof
CN104329836A (en) Refrigerant automatic recycling air conditioner system and control method thereof
CN205332366U (en) Air conditioning system
CN105485857A (en) Air conditioner system oil blockage detection method and device and air conditioner
CN105465968A (en) Detection method and detection device for oil blockage of air conditioning system, and air-conditioner
CN203595314U (en) Multi-online system
CN201314725Y (en) Heat pump type room air conditioner
CN105465969A (en) Detection method of greasy blockage of air conditioning system, detection device of greasy blockage of air conditioning system, and air conditioner
CN105444367A (en) Oil blockage detecting method and detecting device of air conditioning system and air conditioner
CN105546641A (en) Air conditioning system, and processing method and device for oil blockage of air conditioning system
CN105509252A (en) Method and device for treating oil choking of air conditioning system and air conditioner
CN205332590U (en) Air conditioning system
CN103388881A (en) Heat pump and air-conditioning system as well as control method thereof
CN205448013U (en) Air conditioning system
CN203375604U (en) Heat pump air conditioner system
CN103983038A (en) Air conditioning system and control method thereof
CN104214985A (en) Multi-split air conditioning system and low-temperature refrigeration method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant