CN106440569A - Multi-split cleaning method - Google Patents
Multi-split cleaning method Download PDFInfo
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- CN106440569A CN106440569A CN201610845069.3A CN201610845069A CN106440569A CN 106440569 A CN106440569 A CN 106440569A CN 201610845069 A CN201610845069 A CN 201610845069A CN 106440569 A CN106440569 A CN 106440569A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 147
- 238000002474 experimental method Methods 0.000 claims abstract description 26
- 239000010729 system oil Substances 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000005057 refrigeration Methods 0.000 claims abstract description 4
- 239000007791 liquid phase Substances 0.000 claims description 48
- 239000012071 phase Substances 0.000 claims description 46
- 239000002826 coolant Substances 0.000 claims description 43
- 239000006200 vaporizer Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 19
- 210000003437 trachea Anatomy 0.000 claims description 16
- 238000011156 evaluation Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000010913 used oil Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
-
- 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/01—Heaters
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/23—Separators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a multi-split cleaning method which comprises the following steps: (1) an offline experiment detects the oil content Q of a system, the required time T for cleaning the oil quantity Q fully is recorded in the experiment, and the required time t for cleaning the unit oil quantity is calculated according to a function that t is equal to T/Q; (2) the current system oil quantity Q1 is estimated, the required time T1 for cleaning the current system oil quantity Q1 is calculated according to the required time t which is equal to T/Q for cleaning the unit oil quantity t, wherein T1 is equal to Q1*t; and (3) a controller receives a cleaning command, a speed increasing renewing and filtration step is carried out, and a multi-split machine is controlled to run in a refrigeration mode. According to the multi-split cleaning method, no on-line system is required to be mounted again, and the multi-split machine is controlled to accomplish cleaning in a running process; through computing the oil content of the system, the cleaning time can be set precisely, the waste of time and energy sources due to the fact that the set cleaning time for cleaning thoroughly is too long can be avoided, and used oil can be cleaned thoroughly.
Description
Technical field
The invention belongs to air-conditioning clean technologies field, specifically, is to be related to a kind of multi-connected machine clean method.
Background technology
2000 or so, VRF air conditioning slowly come into the market use, VRF air conditioning from initial unit 8HP, 10HP,
Unit 26HP by now etc., from frequency is determined to full frequency conversion, coolant is also from R22 renewal to R410A system, and technology experienced significantly
Upgrading, and initially batch of multi-connected machine user, unit have passed through the use of more than ten years, performance, efficiency and unit reliability
Etc. aspect substantially fall behind, enter the more new stage.If substituting using common type, the built-in knot of existing building will be destroyed
Structure, produce in a large number and discard tube parts, affect existing owner's normal work, in addition the dismounting of coolant piping with reinstall engineering
The huge and construction period length of amount, costly, input are huge.
With the development of domestic economy, the improvement of people's living standards, the project of old system update transformation is also more and more,
But refrigerator oil and the impurity in some original systems in the pipe arrangement of old system, may be left, new R410A system can be transported
Row is adversely affected.It is clear to existing pipe arrangement that although the renewal machine system of different manufacturers can be transferred through pipe arrangement automated cleaning technology
Clean, but during practice, update the oil mass having in the oily amount of cleaning systems and old system and but compare difficult determination, because
This cleaning is difficult thoroughly.
Content of the invention
The present invention is in order to solve existing multi-connected machine cleaning cost height, and the halfway technical problem of cleaning, it is proposed that one
Multi-connected machine clean method is planted, can be solved the above problems.
In order to solve above-mentioned technical problem, the present invention is employed the following technical solutions and is achieved：
A kind of multi-connected machine clean method, comprises the following steps：
（1）, oil mass Q contained by experiment detecting system under line, and T the time required to experimental record has cleaned oil mass Q, and calculate cleaning
T=T/Q the time required to unit oil mass；
（2）, estimation current system oil mass Q1, according to the time required to unit oil mass t=T/Q calculate cleaning current system oil mass Q1 institute
Take time T1, wherein, T1=Q1*t；
（3）, controller receive cleaning order, carry out speedup and update filtration step, control multi-connection operation refrigeration mode, and wind
The low wind speed operating of machine, the coolant of liquid and oil mixture are entered in oil eliminator, the oil eliminator from indoor set trachea and are arranged
The bottom for having heater, the oil eliminator is provided with oily outlet, and top is provided with coolant outlet port, the oil eliminator
On be additionally provided with the entrance for connecting with the indoor set trachea, the coolant outlet port is connected with off-premises station trachea, liquid cold
Matchmaker and oil mixture are entered after oil eliminator from indoor set trachea, and heater is heated, and coolant is vaporized, from coolant outlet port
Discharge, the oil of liquid is discharged from the oil outlet, and the time of the speedup renewal filtration step continuous service is at least T1.
Further, step（2）Middle estimation current system oil mass Q1 method be：Estimation current system gas phase zone is managed respectively
Oil content in road oil content, current system liquid phase region pipeline oil content and current system Gas-liquid phase region vaporizer,
Current system oil mass Q1=current system gas phase zone pipeline oil content+current system liquid phase region pipeline oil content+current system
Oil content in Gas-liquid phase region vaporizer.
Further, the current system gas phase zone pipeline oil content evaluation method is：
Under line, experiment detects oil content Q11 in the unit area of gas phase zone pipeline '：One section of pipe arrangement of gas phase zone pipeline is taken,
The internal diameter of one section of pipe arrangement of the gas phase zone pipeline is R1, length is L1, to weigh its weight for M1；Then gas phase zone is accessed
Online experiment being carried out in pipeline, being removed and weighed after a period of time, weight is M2；In system, oil density is ρ;Thus calculate
Oil content Q11 in the unit area of gas phase zone pipeline ', computing formula is as follows：
；
Current system gas phase zone pipeline oil content=, wherein, R3 is current system gas phase zone pipeline
Internal diameter, L3 is the length of current system gas phase zone pipeline.
Further, the current system liquid phase region pipeline oil content evaluation method is：
Under line, experiment detects oil content Q12 in the unit area of liquid phase region pipeline '：One section of pipe arrangement of liquid phase region pipeline is taken,
The internal diameter of one section of pipe arrangement of the liquid phase region pipeline is R2, length is L2, to weigh its weight for M3；Then liquid phase region is accessed
Online experiment being carried out in pipeline, being removed and weighed after a period of time, weight is M4；In system, oil density is ρ;Thus calculate
Oil content Q12 in the unit area of liquid phase region pipeline ', computing formula is as follows：
；
Current system liquid phase region pipeline oil content=, wherein, R4 is current system liquid phase region pipeline
Internal diameter, L4 is the length of current system liquid phase region pipeline.
Further, in the current system Gas-liquid phase region vaporizer, oil content evaluation method is：
Under line, experiment detects oil content Q13 in the unit number of gas-liquid two-phase vaporizer ', interior machine of a number for X is taken, is not connect
Its weight is weighed when entering system for M5；Then its access system is carried out online experiment, removes after a period of time and weighed,
Weight is M6；In system, oil density is ρ；Thus oil content Q3 in the unit number of gas-liquid two-phase vaporizer is calculated, is calculated
Formula is as follows：
Oil content in current system Gas-liquid phase region vaporizer=, wherein, Y is a number of current system indoor set.
Further, speedup is updated in filtration step, in also including toward refrigerant circulation the step of injection fresh oil, in step
（3）When middle heater is heated, fresh oil and coolant are vaporized together, and the admixture of gas of fresh oil and coolant is from coolant outlet port
Discharge.
Further, between the coolant outlet port and off-premises station trachea, filter is also associated with, for filtering in coolant
Impurity.
Compared with prior art, advantages of the present invention and good effect are：The multi-connected machine clean method of the present invention, without the need for weight
New installation on-line system, control multi-connected machine can complete cleaning in running, by computing system oil content, can be accurate
Set cleaning time, both will not in order to clean thorough set that cleaning time is long causes time and energy waste, again can will be old
Oil cleaning is thorough.
After the detailed description of embodiment of the present invention is read in conjunction with the accompanying, the other features and advantages of the invention will become more
Plus it is clear.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for technology description is had to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of embodiment flow chart of online clean method proposed by the invention；
Fig. 2 be online clean method proposed by the invention a kind of embodiment in oil eliminator structural representation.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment one, the present embodiment proposes a kind of multi-connected machine clean method, as shown in figure 1, comprising the following steps：
Oil mass Q contained by experiment detecting system under S1, line, and T the time required to experimental record has cleaned oil mass Q, and calculate clear
T=T/Q the time required to clean unit oil mass；
S2, estimation current system oil mass Q1, the time required to unit oil mass, t=T/Q is calculated needed for cleaning current system oil mass Q1
Time T1, wherein, T1=Q1*t；
The t oil mass of one unit of cleaning is calculated by experiment detection under line the time required to, due to fixing a certain frequency when press
When being operated, the coolant flowing velocity in pipeline is substantially certain, so when being updated filtering to other systems, with
The time required under line, experiment detection calculates the oil mass for cleaning a unit, t, can be according to by the reality of cleaning systems used as reference
The time required to the time required to the oil mass of border oil mass and unit, t draws and has been cleaned its all oil mass by cleaning systems.
Under step S1 center line, the time required to inspection cleaning unit oil mass, during t, controlled operation of air conditioner frequency is carried out with multi-connected machine
Frequency during cleaning is consistent, and then coolant flowing velocity when ensureing that the coolant flowing velocity in pipeline is detected with experiment under line is protected
Hold consistent.
S3, controller receive cleaning order, carry out speedup and update filtration step, control multi-connection operation refrigeration mode,
And the low wind speed operating of blower fan, now vaporizer does not evaporate, and the coolant in indoor set trachea is liquid, the coolant of liquid and oil mixing
Thing enters oil eliminator from indoor set trachea, as shown in Fig. 2 for the structural representation of oil eliminator, arranging in oil eliminator 11
The bottom for having heater 12, oil eliminator is provided with oily outlet 13, and top is provided with coolant outlet port 14, on oil eliminator
The entrance 15 for connecting with indoor set trachea is additionally provided with, coolant outlet port 14 is connected with off-premises station trachea, the coolant of liquid and oil
Mixture is entered after oil eliminator 11 from indoor set trachea through entrance 15, and heater 12 is heated, and coolant is vaporized, from coolant
Outlet 14 is discharged, and the oil of liquid is discharged from the oil outlet 13, has calculated discharge current system oil mass in step S2
Time T1 needed for Q1, therefore, in order to clean thoroughly oil, the time of speedup renewal filtration step continuous service is at least T1.
In the low wind operation process that freezes, the liquid refrigerants in system adds with oil through oil eliminator in heater 12
In the case of thermal acceleration, coolant in system and fresh oil being completely separated with old oil in system progressively.
The oil eliminator adopted by oil strain is crossed in the present embodiment, by increasing heater in bottom, inside oil
Coolant and oil carry out heating increases refrigerant flow rate, while making the refrigerant evaporation of liquid and taking away fresh oil and then filter in legacy system
Oil, increased the flow velocity of coolant and fresh oil, on the one hand being completely separated with old oil in system progressively beneficial to coolant and fresh oil, separately
On the one hand shorten disengaging time, improve purification efficiency.
In the old system of general room business air conditioner, oil and impurity there may be where namely the high-voltage tube of online pipe,
Inside low-voltage tube and interior machine vaporizer, therefore substantially they can be divided into gas phase zone, liquid phase region and gas-liquid mixed zone, as one
Individual preferred embodiment, estimates in this step S2 that the method for current system oil mass Q1 is：Estimation current system gas phase zone is managed respectively
Oil content in road oil content, current system liquid phase region pipeline oil content and current system Gas-liquid phase region vaporizer,
Current system oil mass Q1=current system gas phase zone pipeline oil content+current system liquid phase region pipeline oil content+current system
Oil content in Gas-liquid phase region vaporizer.Oil mass summation in above three region is approximately equivalent to the oil mass of whole system.
Of course it is not excluded there is certain error, when calculating, adequate compensation can be carried out to error.
It is preferred that in the present embodiment, current system gas phase zone pipeline oil content evaluation method is：
Under line, experiment detects oil content Q11 in the unit area of gas phase zone pipeline '：One section of pipe arrangement of gas phase zone pipeline is taken,
The internal diameter of one section of pipe arrangement of the gas phase zone pipeline is R1, length is to weigh its weight before load gas phase zone pipeline to be
M1；Then being accessed in the pipeline of gas phase zone carries out online experiment, and operation is removed after a period of time and weighed, and weighs above-mentioned gas
The weight of one section of pipe arrangement of phase region pipeline is M2；In system, oil density is ρ;Thus calculate in the unit area of gas phase zone pipeline
Oil content Q11 ', computing formula is as follows：
；
Therefore, using oil content Q11 in the unit area of gas phase zone pipeline ' and current system gas phase zone pipeline inner surface
Area is obtained current system gas phase zone pipeline oil content, and the inner surface area of current system gas phase zone pipeline is by the pipeline
Internal diameter and length（It is known）Can be calculated, current system gas phase zone pipeline oil content=,
Wherein, R3 is the internal diameter of current system gas phase zone pipeline, and L3 is the length of current system gas phase zone pipeline.
As a same reason, pipeline oil content evaluation method in current system liquid phase region is：
Under line, experiment detects oil content Q12 in the unit area of liquid phase region pipeline '：One section of pipe arrangement of liquid phase region pipeline is taken,
The internal diameter of one section of pipe arrangement of the liquid phase region pipeline is R2, length is L2, to weigh its weight for M3；Then liquid phase region is accessed
Online experiment is carried out in pipeline, operation is removed after a period of time and weighed, weight is M4；It should be noted that when system is transported
When after row a period of time, one section of pipe arrangement of the liquid phase region pipeline is removed and weighed, the coolant in pipe arrangement will become at normal temperatures and pressures
Gaseous state volatilizees, and does not interfere with and weighs, namely the difference of M4 and M3 is system operation trapped fuel amount for a period of time afterwards in the liquid phase region pipe,
Oil density is ρ;Thus oil content Q12 in the unit area of liquid phase region pipeline is calculated ', computing formula is as follows：
；
Current system liquid phase region pipeline oil content=, wherein, R4 is current system liquid phase region pipeline
Internal diameter, L4 is the length of current system liquid phase region pipeline.
Vaporizer is special due to its construction, different from the computational methods of pipeline storage, in the present embodiment current system
In system Gas-liquid phase region vaporizer, oil content evaluation method is：
Under line, experiment detects oil content Q13 in the unit number of gas-liquid two-phase vaporizer ', interior machine of a number for X is taken, is not connect
Its weight is weighed when entering system for M5；Then its access system is carried out online experiment, removes after a period of time and weighed,
Weight is M6；In system, oil density is ρ；Thus oil content Q3 in the unit number of gas-liquid two-phase vaporizer is calculated, is calculated
Formula is as follows：
Oil content in current system Gas-liquid phase region vaporizer=, wherein, Y is a number of current system indoor set.
As interior machine includes vaporizer and other hardware configurations, it is possible to which the position that there is long-pending oil is exactly vaporizer, therefore,
Before and after multi-connection operation, the hardware configuration weight of interior machine will not change, and uniquely cause that its weight changes is operation
When vaporizer long-pending oil, therefore, by the weight change of machine in before and after operation of weighing in the present embodiment, and then can calculate
The oil mass that is accumulated in vaporizer, is more prone to realize, easy to operate.
Speedup is updated in filtration step, as the old oil in system is gradually filtered, in order in anti-locking system, oil starvation causes to damage
Bad compressor, shortens its service life, in also including toward refrigerant circulation in the present embodiment the step of injection fresh oil, in step s3
When heater is heated, fresh oil and coolant are vaporized together, and the admixture of gas of fresh oil and coolant is discharged from coolant outlet port.
In order to filter out the impurity in coolant, prevent which from entering compressor and causing compressor damage, as Fig. 2 institute
Show, filter 16 between coolant outlet port 14 and off-premises station trachea, is also associated with, for filtering the impurity in coolant.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, and this technology is led
Change, remodeling, interpolation or replacement that the those of ordinary skill in domain is made in the essential scope of the present invention, should also belong to this
Bright protection domain.
Claims (7)
1. a kind of multi-connected machine clean method, it is characterised in that comprise the following steps：
（1）, oil mass Q contained by experiment detecting system under line, and T the time required to experimental record has cleaned oil mass Q, and calculate cleaning
T=T/Q the time required to unit oil mass；
（2）, estimation current system oil mass Q1, according to the time required to unit oil mass t=T/Q calculate cleaning current system oil mass Q1 institute
Take time T1, wherein, T1=Q1*t；
（3）, controller receive cleaning order, carry out speedup and update filtration step, control multi-connection operation refrigeration mode, and wind
The low wind speed operating of machine, the coolant of liquid and oil mixture are entered in oil eliminator, the oil eliminator from indoor set trachea and are arranged
The bottom for having heater, the oil eliminator is provided with oily outlet, and top is provided with coolant outlet port, the oil eliminator
On be additionally provided with the entrance for connecting with the indoor set trachea, the coolant outlet port is connected with off-premises station trachea, liquid cold
Matchmaker and oil mixture are entered after oil eliminator from indoor set trachea, and heater is heated, and coolant is vaporized, from coolant outlet port
Discharge, the oil of liquid is discharged from the oil outlet, and the time of the speedup renewal filtration step continuous service is at least T1.
2. multi-connected machine clean method according to claim 1, it is characterised in that step（2）Middle estimation current system oil mass
The method of Q1 is：Estimation current system gas phase zone pipeline oil content, current system liquid phase region pipeline oil content and current respectively
Oil content in system Gas-liquid phase region vaporizer,
Current system oil mass Q1=current system gas phase zone pipeline oil content+current system liquid phase region pipeline oil content+current system
Oil content in Gas-liquid phase region vaporizer.
3. multi-connected machine clean method according to claim 2, it is characterised in that the current system gas phase zone pipeline oil-containing
Measuring evaluation method is：
Under line, experiment detects oil content Q11 in the unit area of gas phase zone pipeline '：One section of pipe arrangement of gas phase zone pipeline is taken,
The internal diameter of one section of pipe arrangement of the gas phase zone pipeline is R1, length is L1, to weigh its weight for M1；Then gas phase zone is accessed
Online experiment being carried out in pipeline, being removed and weighed after a period of time, weight is M2；In system, oil density is ρ;Thus calculate
Oil content Q11 in the unit area of gas phase zone pipeline ', computing formula is as follows：
；
Current system gas phase zone pipeline oil content=, wherein, R3 is current system gas phase zone pipeline
Internal diameter, L3 is the length of current system gas phase zone pipeline.
4. multi-connected machine clean method according to claim 2, it is characterised in that the current system liquid phase region pipeline oil-containing
Measuring evaluation method is：
Under line, experiment detects oil content Q12 in the unit area of liquid phase region pipeline '：One section of pipe arrangement of liquid phase region pipeline is taken,
The internal diameter of one section of pipe arrangement of the liquid phase region pipeline is R2, length is L2, to weigh its weight for M3；Then liquid phase region is accessed
Online experiment being carried out in pipeline, being removed and weighed after a period of time, weight is M4；In system, oil density is ρ;Thus calculate
Oil content Q12 in the unit area of liquid phase region pipeline ', computing formula is as follows：
；
Current system liquid phase region pipeline oil content=, wherein, R4 is current system liquid phase region pipeline
Internal diameter, L4 is the length of current system liquid phase region pipeline.
5. multi-connected machine clean method according to claim 2, it is characterised in that the current system Gas-liquid phase region evaporation
In device, oil content evaluation method is：
Under line, experiment detects oil content Q13 in the unit number of gas-liquid two-phase vaporizer ', interior machine of a number for X is taken, is not connect
Its weight is weighed when entering system for M5；Then its access system is carried out online experiment, removes after a period of time and weighed,
Weight is M6；In system, oil density is ρ；Thus oil content Q3 in the unit number of gas-liquid two-phase vaporizer is calculated, is calculated
Formula is as follows：
Oil content in current system Gas-liquid phase region vaporizer=, wherein, Y is a number of current system indoor set.
6. the multi-connected machine clean method according to any one of claim 1-5, it is characterised in that speedup updates filtration step
In, in also including toward refrigerant circulation the step of injection fresh oil, in step（3）When middle heater is heated, fresh oil and coolant
Vaporize together, the admixture of gas of fresh oil and coolant is discharged from coolant outlet port.
7. the multi-connected machine clean method according to any one of claim 1-5, it is characterised in that the coolant outlet port and room
Filter is also associated between outer machine trachea, for filtering the impurity in coolant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610845069.3A CN106440569B (en) | 2016-09-23 | 2016-09-23 | Multi-online cleaning method |
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| CN201610845069.3A CN106440569B (en) | 2016-09-23 | 2016-09-23 | Multi-online cleaning method |
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| CN106440569B CN106440569B (en) | 2020-02-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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Effective date of registration: 20201113 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. |