CN106369879A - Oil return control method and device for multi-split air-conditioning system - Google Patents
Oil return control method and device for multi-split air-conditioning system Download PDFInfo
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- CN106369879A CN106369879A CN201510435747.4A CN201510435747A CN106369879A CN 106369879 A CN106369879 A CN 106369879A CN 201510435747 A CN201510435747 A CN 201510435747A CN 106369879 A CN106369879 A CN 106369879A
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Abstract
The invention provides an oil return control method for a multi-split air-conditioning system. The oil return control method for the multi-split air-conditioning system comprises the steps that the cumulative operating time is determined according to multiple factors affecting oil return of a compressor; and whether oil return is needed or not is judged according to the cumulative operating time. In addition, the invention provides an oil return control device for the multi-split air-conditioning system. The method or device provided by the invention has the effects that firstly, all the factors affecting oil return of the compressor are analyzed, and the cumulative operating time is calculated according to the weights of the factors, so that dynamic calculation of the oil return time is achieved; and secondly, it is guaranteed that sufficient compressor oil is provided for the compressor, and the influence on the air-conditioning effect is minimized.
Description
Technical field
The invention belongs to multi-gang air-conditioner field, more particularly, to a kind of multiple on-line system method for controlling oil return
And device.
Background technology
In one multiple on-line system, outer machine can connect machine in multiple stage.In some, machine runs well, some
Interior machine is in stopped status.After system operating a period of time, pipeline that the interior machine of shutdown connects or its change
Hot device can store press oil.The disappearance of press oil, can cause mechanical damage to compressor, serious reduction
Product quality.Existing method, typically periodically oil return realize press oil recovery.System oil return mistake
Journey typically adjusts compressor frequency, expansion valve opening, rotation speed of fan etc..Periodically oil return method, though
So control simple, but the fixing oil return time be possible to long or too short.Long can not have oil return
Effect has enough press oil it is impossible to compressor is effectively ensured；Time, the too short air-conditioning that then may affect was imitated
Really.
Content of the invention
In view of this, it is possible to long or mistake to solve to exist the fixing oil return time in prior art
The short problem causing air-conditioning effect, the purpose of the present invention is to propose to a kind of multiple on-line system oil return controlling party
Method.In order to have a basic understanding to some aspects of the embodiment disclosing, shown below is simple
Summary.This summarized section is not extensive overview, be not to determine key/critical component or
Describe the protection domain of these embodiments.Its sole purpose is to assume some concepts with simple form,
Preamble in this, as following detailed description.
In some optional embodiments, methods described, comprising:
Accumulated running time is determined according to the factor of multiple impact compressor oil returns；
Oil return is judged whether according to described accumulated running time.
Additionally, another object of the present invention is to propose a kind of multiple on-line system oil return control device.
In some optional embodiments, described device, comprising:
Determining unit, for determining accumulated running time according to the factor of multiple impact compressor oil returns；
Judging unit, for judging whether oil return according to described accumulated running time.
Using above-described embodiment, can reach following effect:
By the analysis to each influence factor of press oil return, to calculate accumulative operating according to respective weight
Time, realize dynamic oil return Time Calculation；
Ensure that compressor has enough press oil, and reduce the impact to air-conditioning effect to greatest extent.
For above-mentioned and related purpose, one or more embodiments include will be explained in simultaneously below
The feature being particularly pointed out in the claims.Description below and accompanying drawing detailed description are some exemplary
Aspect, and its instruction be only each embodiment the utilizable various modes of principle in one
A little modes.Other benefits and novel features will be considered in conjunction with the accompanying with detailed description below and
Become obvious, the disclosed embodiments are intended to including all these aspects and theirs is equivalent.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the one of the application
Part, the schematic description and description of the present invention is used for explaining the present invention, does not constitute to this
Bright improper restriction.In the accompanying drawings:
Fig. 1 shows that a kind of flow process of multiple on-line system method for controlling oil return of the embodiment of the present invention is illustrated
Figure；
Fig. 2 shows a kind of idiographic flow of multiple on-line system method for controlling oil return of the embodiment of the present invention
Schematic diagram；
Fig. 3 shows a kind of structured flowchart of multiple on-line system oil return control device of the embodiment of the present invention.
Specific embodiment
The following description and drawings fully illustrate specific embodiments of the present invention, so that the skill of this area
Art personnel can put into practice them.Other embodiments can include structure, logic, electric,
Process and other changes.Embodiment only represents possible change.Unless explicitly requested, otherwise
Individually components and functionality is optional, and the order operating can change.Some embodiments
Part and feature can be included in or replace part and the feature of other embodiments.The reality of the present invention
The scope applying scheme includes the gamut of claims, and all of claims obtain
Equivalent.Herein, these embodiments of the present invention can individually or generally be used term
" invention " representing, it is convenient that this is used for the purpose of, and if in fact disclosing the invention more than,
The scope being not meant to automatically limit this application is any single invention or inventive concept.
Fig. 1 shows that a kind of flow process of multiple on-line system method for controlling oil return of the embodiment of the present invention is illustrated
Figure,
As shown in figure 1, in some illustrative embodiments, methods described, including following step
Rapid:
Step s101, determines accumulated running time according to the factor of multiple impact compressor oil returns；
Step s102, judges whether oil return according to described accumulated running time；
In the above-described embodiments, judge whether oil return by determining accumulated running time, and accumulative operating
Time is although the method for regular oil return controls letter by the factor determination of multiple impact compressor oil returns
Single, but the fixing oil return time oil return control can not be carried out according to the real-time operating condition of compressor,
Dynamic oil return can be realized by this method it is ensured that compressor has enough press oil, and to greatest extent
Reduce impact to air-conditioning effect；
In some illustrative embodiments, described factor includes one below:
The pressure reduction of compressor frequency, high-pressure, high pressure and low pressure, delivery temperature, outer machine and interior machine
Maximum height difference, that internal-external machine connects machine pipe total length, outdoor operating conditions temperature, indoor set start is negative
Lotus；
In some illustrative embodiments, each described factor include multiple affect this factor sub- because
Element, then described determination accumulated running time, comprising:
When respectively each described factor being monitored, and recording the operating of each described sub- factor of each factor
Between；
According to the duration of runs of each described sub- factor, calculate described accumulated running time；
Further, if described factor is i, described sub- factor is j, then calculate described accumulative fortune
Turn the time, comprising:
Inquire about weight f of each described sub- factorijWith corresponding duration of runs tfij；
Calculate described accumulated running time t according to below equationz:
Tz=∑ (fij·tfij)；
Wherein, i=1～n, j=1～m；Described fijBe dispatch from the factory before preset or artificial setting, and institute
Have an impact the f of factorijTotal weight add up to 1；fijCan according to compressor producer provide data or
Experimental data determines；
In some illustrative embodiments, described oil return is judged whether according to described accumulated running time,
Including:
By described accumulated running time tzIt is compared with control time threshold value ty；
If described accumulated running time tzMore than or equal to described control time threshold value ty, then execute oil return
Running operation；
If described accumulated running time tzLess than described control time threshold value ty, then do not execute oil return operating
Operation；
In some illustrative embodiments, if described accumulated running time tzLess than described control time
Threshold value ty, then after judging not execute oil return running operation, also include: continue executing with described
Determine the operation of accumulated running time according to the factor of multiple impact compressor oil returns；
If described accumulated running time tzMore than or equal to described control time threshold value ty, then executing back
After oily running operation, also include:
Duration of runs t by described each sub- factor of recordfijReset；
Again respectively each described factor is monitored, records the operating of each described sub- factor of each factor
Time, and the duration of runs t according to each described sub- factorfij, calculate described accumulated running time tz.
Fig. 2 shows a kind of idiographic flow of multiple on-line system method for controlling oil return of the embodiment of the present invention
Schematic diagram,
As shown in Fig. 2 in some illustrative embodiments, methods described, including following step
Rapid:
S201, multiple on-line system is started shooting；
S202, is monitored to the sub- factor of several principal elements of impact compressor oil return, record fortune
Turn the time；
Assume to monitor from boot system the duration of runs such as table 1 of the sub- factor of each factor:
The weight of sub- factor and the duration of runs of each factor is have recorded, wherein, shown in table 1 in table 1
The setting of the division of frequency height and respective weight according to the data that compressor producer provides or can test number
According to determining；The setting of weight can set before dispatching from the factory, or, these weighted values are existed
In external device, can directly by external device, weighted value be adjusted；
The weight of each influence factor of table 1 and the duration of runs
S203, calculates the accumulated running time that oil return controls；
Inquire about weight f of each described sub- factor according to table 1ijWith corresponding duration of runs tfij；
Calculate described accumulated running time t according to below equationz:
tz=∑ (fij·tfij)=f11·tf11+f12·tf12+…+f93·
tf93=0.02 30+0.035 60+ ...+0.07 90=121.95min
S203, judges whether oil return；
According to time threshold tyJudge whether oil return, wherein tyCan be according to press type, press model
Specification, operation mode etc. set different data；Assume ty=120min, then tz>ty, judge to carry out
Oil return running operation；
S204, carries out oil return running operation；
S205, each sub- factor duration of runs tfijReset, retriggered s202；
T in table 1fijRestart to monitor timing, and t is calculated according to monitoring resultzIf, tz<ty,
Then do not carry out oil return operating, the t in table 1fijDo not reset, continue monitoring timing, until tz> or=ty,
Then carry out oil return operation.
Fig. 3 is a kind of structured flowchart of multiple on-line system oil return control device 300 of the embodiment of the present invention；
As shown in figure 3, in some illustrative embodiments, described device 300, comprising:
Determining unit 301, during for determining accumulative operating according to the factor of multiple impact compressor oil returns
Between；
Judging unit 302, for judging whether oil return according to described accumulated running time；
In some illustrative embodiments, each described factor include multiple affect this factor sub- because
Element, then described determining unit 301, comprising:
Monitoring means 3011, for being monitored to each described factor respectively, and record each of each factor
The duration of runs of described sub- factor；
Computing unit 3012, for the duration of runs according to each described sub- factor, calculates described accumulative fortune
Turn the time；
In some illustrative embodiments, described factor includes one below:
The pressure reduction of compressor frequency, high-pressure, high pressure and low pressure, delivery temperature, outer machine and interior machine
Maximum height difference, that internal-external machine connects machine pipe total length, outdoor operating conditions temperature, indoor set start is negative
Lotus；
In some illustrative embodiments, if described factor is i, described sub- factor is j, then
Described computing unit 3012, comprising:
Query unit 30121, for inquiring about weight f of each described sub- factorijWith during corresponding operating
Between tfij；
Arithmetic element 30122, for calculating described accumulated running time t according to below equationz:
Tz=∑ (fij·tfij)；
Wherein, i=1～n, j=1～m；Described fijBe dispatch from the factory before preset or artificial setting；
In some illustrative embodiments, described judging unit 302, comprising:
Judgment sub-unit 3021, for being compared described accumulated running time with control time threshold value；
If described accumulated running time is more than or equal to described control time threshold value, execution oil return operating
Operation；
If described accumulated running time is less than described control time threshold value, do not execute oil return running operation；
In some illustrative embodiments, if described accumulated running time is less than described control time threshold
Value, then described judgment sub-unit after judging not execute oil return running operation, described determining unit
301 continue executing with the behaviour that the described factor according to multiple impact compressor oil returns determines accumulated running time
Make；
If described accumulated running time is more than or equal to described control time threshold value, described judgement is single
First 3021 after execution oil return running operation, described each son that described monitoring means 3011 will record
The duration of runs of factor resets, and again respectively each described factor is monitored, and records each factor
The duration of runs of each described sub- factor, and trigger described computing unit 3012 according to each described sub- factor
The duration of runs, calculate described accumulated running time.
Using above-described embodiment, can reach following effect:
By the analysis to each influence factor of press oil return, to calculate accumulative operating according to respective weight
Time, realize dynamic oil return Time Calculation；
Ensure that compressor has enough press oil, and reduce the impact to air-conditioning effect to greatest extent.
It should also be appreciated by one skilled in the art that combining the various illustrative of the embodiments herein description
Box, module, circuit and algorithm steps all can be implemented as electronic hardware, computer software or its
Combination.In order to clearly demonstrate the interchangeability between hardware and software, above to various illustrative
Part, frame, module, circuit and step are all generally described around its function.As for this
Function is implemented as hardware and is also implemented as software, is applied depending on specific application with to whole system
Plus design constraint.Those skilled in the art can be directed to each application-specific, with flexible side
Formula realizes described function, but, this realize decision-making and should not be construed as the protection deviating from the disclosure
Scope.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included in the present invention
Protection domain within.
Claims (12)
1. a kind of multiple on-line system method for controlling oil return is it is characterised in that include:
Accumulated running time is determined according to the factor of multiple impact compressor oil returns；
Oil return is judged whether according to described accumulated running time.
2. the method for claim 1 it is characterised in that each described factor include multiple
Affect the sub- factor of this factor, then described determination accumulated running time, comprising:
When respectively each described factor being monitored, and recording the operating of each described sub- factor of each factor
Between；
According to the duration of runs of each described sub- factor, calculate described accumulated running time.
3. the method for claim 1 is it is characterised in that described factor includes one below:
The pressure reduction of compressor frequency, high-pressure, high pressure and low pressure, delivery temperature, outer machine and interior machine
Maximum height difference, internal-external machine connect machine pipe total length, outdoor operating conditions temperature, indoor set start load.
If 4. method as claimed in claim 2 is it is characterised in that described factor is i, institute
Stating sub- factor is j, then calculate described accumulated running time, comprising:
Inquire about weight f of each described sub- factorijWith corresponding duration of runs tfij；
Calculate described accumulated running time t according to below equationz:
tz=∑ (fij·tfij)；
Wherein, i=1～n, j=1～m；Described fijBe dispatch from the factory before preset or artificial setting.
5. method as claimed in claim 2 it is characterised in that described according to described accumulative operating
Time judges whether oil return, comprising:
Described accumulated running time is compared with control time threshold value；
If described accumulated running time is more than or equal to described control time threshold value, execution oil return operating
Operation；
If described accumulated running time is less than described control time threshold value, do not execute oil return running operation.
If 6. method as claimed in claim 5 is it is characterised in that described accumulated running time is little
In described control time threshold value, then, after judging not execute oil return running operation, also include:
Continue executing with the behaviour that the described factor according to multiple impact compressor oil returns determines accumulated running time
Make；
If described accumulated running time is more than or equal to described control time threshold value, in execution oil return operating
After operation, also include:
The duration of runs of described each sub- factor of record is reset；
Again respectively each described factor is monitored, records the operating of each described sub- factor of each factor
Time, and the duration of runs according to each described sub- factor, calculate described accumulated running time.
7. a kind of multiple on-line system oil return control device is it is characterised in that include:
Determining unit, for determining accumulated running time according to the factor of multiple impact compressor oil returns；
Judging unit, for judging whether oil return according to described accumulated running time.
8. device as claimed in claim 7 it is characterised in that each described factor include multiple
Affect the sub- factor of this factor, then described determining unit, comprising:
Monitoring means, for being monitored, and recording each described of each factor respectively to each described factor
The duration of runs of sub- factor；
Computing unit, for the duration of runs according to each described sub- factor, when calculating described accumulative operating
Between.
9. device as claimed in claim 7 is it is characterised in that described factor includes one below:
The pressure reduction of compressor frequency, high-pressure, high pressure and low pressure, delivery temperature, outer machine and interior machine
Maximum height difference, internal-external machine connect machine pipe total length, outdoor operating conditions temperature, indoor set start load.
If 10. device as claimed in claim 8 is it is characterised in that described factor is i, institute
Stating sub- factor is j, then described computing unit, comprising:
Query unit, for inquiring about weight f of each described sub- factorijWith corresponding duration of runs tfij；
Arithmetic element, for calculating described accumulated running time t according to below equationz:
tz=∑ (fij·tfij)；
Wherein, i=1～n, j=1～m；Described fijBe dispatch from the factory before preset or artificial setting.
11. devices as claimed in claim 8 are it is characterised in that described judging unit, comprising:
Judgment sub-unit, for being compared described accumulated running time with control time threshold value；
If described accumulated running time is more than or equal to described control time threshold value, execution oil return operating
Operation；
If described accumulated running time is less than described control time threshold value, do not execute oil return running operation.
12. if devices as claimed in claim 11 are it is characterised in that described accumulated running time
Less than described control time threshold value, then described judgment sub-unit is being judged not execute oil return running operation
Afterwards, described determining unit continues executing with the described factor determination according to multiple impact compressor oil returns and tires out
The operation of the meter duration of runs；
If described accumulated running time is more than or equal to described control time threshold value, described judgment sub-unit
Execution oil return running operation after, described monitoring means by record described each sub- factor operating when
Between reset, and again respectively each described factor is monitored, records each described sub- factor of each factor
The duration of runs, and trigger the duration of runs according to each described sub- factor for the described computing unit, calculate institute
State accumulated running time.
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| CN201510435747.4A CN106369879B (en) | 2015-07-23 | 2015-07-23 | A kind of multi-line system method for controlling oil return and device |
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| CN201510435747.4A CN106369879B (en) | 2015-07-23 | 2015-07-23 | A kind of multi-line system method for controlling oil return and device |
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| CN108375256A (en) * | 2018-01-16 | 2018-08-07 | 珠海格力电器股份有限公司 | Automatic oil return control method and device for air conditioner |
| CN108489150A (en) * | 2018-02-02 | 2018-09-04 | 青岛海尔空调电子有限公司 | A kind of multi-connected machine method for controlling oil return and system |
| CN109539649A (en) * | 2018-12-04 | 2019-03-29 | 珠海格力电器股份有限公司 | Unit oil return control method and system and multi-split air conditioner |
| CN110762901A (en) * | 2019-11-11 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Auxiliary oil return control method and device and air conditioner |
| CN111271828A (en) * | 2020-03-10 | 2020-06-12 | 珠海格力电器股份有限公司 | Automatic oil return control method and device for improving oil return effect and air conditioning equipment |
| CN111426011A (en) * | 2020-04-13 | 2020-07-17 | 广东美的暖通设备有限公司 | Control method of air conditioning system, air conditioning system and computer storage medium |
| CN111426010A (en) * | 2020-04-13 | 2020-07-17 | 广东美的暖通设备有限公司 | Control method of air conditioning system, air conditioning system and computer storage medium |
| WO2021012769A1 (en) * | 2019-07-24 | 2021-01-28 | 南京天加环境科技有限公司 | Oil return control method for multi-split air conditioner |
| CN114135973A (en) * | 2021-11-15 | 2022-03-04 | 珠海格力电器股份有限公司 | Multi-split air conditioner control method and device and multi-split air conditioner |
| WO2022111224A1 (en) * | 2020-11-25 | 2022-06-02 | 珠海格力电器股份有限公司 | Oil return control method and apparatus and multi-split air conditioner |
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| CN108375256B (en) * | 2018-01-16 | 2019-08-20 | 珠海格力电器股份有限公司 | Automatic oil return control method and device for air conditioner |
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| CN110762901A (en) * | 2019-11-11 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Auxiliary oil return control method and device and air conditioner |
| CN111271828A (en) * | 2020-03-10 | 2020-06-12 | 珠海格力电器股份有限公司 | Automatic oil return control method and device for improving oil return effect and air conditioning equipment |
| CN111426011A (en) * | 2020-04-13 | 2020-07-17 | 广东美的暖通设备有限公司 | Control method of air conditioning system, air conditioning system and computer storage medium |
| CN111426010B (en) * | 2020-04-13 | 2021-10-26 | 广东美的暖通设备有限公司 | Control method of air conditioning system, air conditioning system and computer storage medium |
| CN111426010A (en) * | 2020-04-13 | 2020-07-17 | 广东美的暖通设备有限公司 | Control method of air conditioning system, air conditioning system and computer storage medium |
| WO2022111224A1 (en) * | 2020-11-25 | 2022-06-02 | 珠海格力电器股份有限公司 | Oil return control method and apparatus and multi-split air conditioner |
| CN114135973A (en) * | 2021-11-15 | 2022-03-04 | 珠海格力电器股份有限公司 | Multi-split air conditioner control method and device and multi-split air conditioner |
| CN114135973B (en) * | 2021-11-15 | 2023-02-03 | 珠海格力电器股份有限公司 | Multi-split air conditioner control method and device and multi-split air conditioner |
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| CN106369879B (en) | 2019-10-22 |
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