CN104879875A - Method for controlling inner devices of multi-device-connected air-conditioning system and multi-device-connected air-conditioning system - Google Patents
Method for controlling inner devices of multi-device-connected air-conditioning system and multi-device-connected air-conditioning system Download PDFInfo
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- CN104879875A CN104879875A CN201410067830.6A CN201410067830A CN104879875A CN 104879875 A CN104879875 A CN 104879875A CN 201410067830 A CN201410067830 A CN 201410067830A CN 104879875 A CN104879875 A CN 104879875A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
- 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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for controlling inner devices of a multi-device-connected air-conditioning system and a multi-device-connected air-conditioning system, and belongs to the field of conditioners and control methods thereof, and the method aims to solve the problem that a plurality of inner devices cannot be controlled together. The method for controlling the inner devices of the multi-device-connected air-conditioning system respectively set grades for a plurality of inner devices, a system controller respectively controls the opening degree of an expansion valve of each inner device to ensure that an inner device of a high grade can preferentially be in a work state that is the opening degree of an expansion valve of the inner device is less than the maximum opening degree MaxVal-ij. The multi-device-connected air-conditioning system comprise an outer device and at least two inner devices, each inner device is provided with an expansion valve, the air-conditioning system further comprises a system controller used for defecting and controlling the opening degree of the expansion valve of each inner device. By adopting the method for controlling the inner devices of the multi-device-connected air-conditioning system and the multi-device-connected air-conditioning system, an inner device of a high grade can be used preferentially according to grades, and the system is reasonable in structure, convenient to use, and wide in scope of application.
Description
Technical field
The present invention relates to machine control method in a kind of multi-online air-conditioning system and realize the multi-online air-conditioning system of this control method.
Background technology
Multi-online air-conditioning system refers to the indoor set that an off-premises station connects more than two or two.Multi-online air-conditioning system forms by being arranged on machine in different environment for use usually.Requirement and the impact of environment for use internal air conditioner effect are very large.To heat, few many of the heating load that sun-drenched room needs than dark moist room, VIP user room requires high than domestic consumer room to air-conditioning effect, needs the heating needs that preferentially can meet VIP user in the same time.
In existing multi-connected machine, machine adopts expansion valve to control the cold medium flux being entered interior machine heat exchanger by outer machine usually.Concrete, the aperture size of expansion valve calculates according to the coil temperature of interior machine heat exchanger.The spontaneous control expansion valve opening of interior machine just carries out point control, can not realize interior machine personalised effects difference on the whole, preferentially cannot ensure the air-conditioning effect of important place.
Summary of the invention
An object of the present invention is to propose machine control method in multi-online air-conditioning system that a kind of interior machine that can ensure that grade is high preferentially meets instructions for use.
An also object of the present invention proposes the multi-online air-conditioning system that in a kind of energy multiple stage, machine jointly controls.
For reaching this object, on the one hand, the present invention is by the following technical solutions:
Machine control method in a kind of multi-online air-conditioning system, the method to be respectively in multiple stage machine setting grade, the expansion valve opening that system controller controls machine in every platform respectively with ensure grade high in function be preferentially in the duty that expansion valve opening value is less than its maximum opening value MaxVal-ij.
Particularly, the expansion valve opening by reducing low-grade interior machine make high-grade in machine expansion valve opening value be less than its maximum opening value MaxVal-ij.
Particularly, described method comprises the steps:
Step 1, be in platform every in system machine setting coding ij, wherein, the grade that i characterizes this interior machine is i-th grade, and 1≤i≤N, N is whole interior machine number of degrees; It is machine in jth platform in i-th grade that j characterizes this interior machine, and 1≤j≤Mi, Mi is i-th grade of interior machine number had;
Step 2, set minimum opening value MinVal-ij and maximum opening value MaxVal-ij for the expansion valve of machine in every platform; The initial value arranging i is N, and the initial value arranging j is 1;
Whether step 3, the expansion valve opening value detecting machine in the i-th j platform are more than or equal to its maximum opening value MaxVal-ij, are more than or equal to, go to step 4; Be less than, go to step 5;
Step 4, reduce the expansion valve opening of machine in every platform in the i-th-1 grade to the 1st grade, go to step 3;
In step 5, determining step 3, whether j equals Mi, is not equal to, and j assignment is j+1 and goes to step 3; Equal, go to step 6;
Step 6, expansion valve opening value record current for machine in platform every in the i-th-1 grade to the 1st grade is respectively the new maximum opening value MaxVal of this interior machine; I assignment is i-1, j assignment is 1, goes to step 7;
Step 7, judge whether i equals 1, equals, and goes to step 8; Be not equal to, go to step 3;
Step 8, EP (end of program).
Further, in step 3, the method reducing the expansion valve opening of machine in every platform in the i-th-1 grade to the 1st grade is: the expansion valve opening value of machine in platform every in the i-th-1 grade to the 1st grade is adjusted to the K of currency doubly, wherein, and 0 < K < 1.
Further again, the K value corresponding to interior machine of different brackets is different.
Further, the lower then corresponding K value of the grade of interior machine is less.
Particularly, then do not adjust when the expansion valve opening value of interior machine is minimum opening value.
Particularly, after system is again started shooting or restarted, then whether the expansion valve that system controller detects machine in every platform successively according to grade order from high to low is again operated in maximum opening value.
On the other hand, the present invention is by the following technical solutions:
A kind of multi-online air-conditioning system for realizing above-mentioned interior machine control method, described air-conditioning system comprises outer machine and at least two interior machines, in every platform, machine is provided with expansion valve, described air-conditioning system also comprises system controller, and described system controller is used for the opening value of machine expansion valve in the every platform of detection and control.
Particularly, described system controller is arranged on described outer machine.
In multi-online air-conditioning system of the present invention machine control method according to grade ensure grade high in function preferentially meet instructions for use, namely the interior function that grade is high is preferentially in the duty that expansion valve opening value is less than its maximum opening value MaxVal-ij, by machine Joint regulation in multiple stage, resource (refrigerant) allotment is more reasonable, and VIP user etc. can be allowed to need the interior machine preferably met in the room of instructions for use to be operated in more rational state.The COEFFICIENT K that in different brackets, machine is corresponding different, can allow adjustment more efficient, in follow-up inferior grade, machine adjustment offers convenience.
Multi-online air-conditioning system of the present invention achieves above-mentioned interior machine control method, rational in infrastructure, easy to use, applied widely.
Accompanying drawing explanation
Fig. 1 is machine control method flow chart in the preferred embodiment of the present invention one multi-online air-conditioning system.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Preferred embodiment one:
This preferred embodiment provides machine control method in a kind of multi-online air-conditioning system, the method to be respectively in multiple stage machine setting grade, the expansion valve opening that system controller controls machine in every platform respectively with ensure grade high in function be preferentially in the duty that expansion valve opening value is less than its maximum opening value MaxVal-ij.Wherein, the expansion valve opening by reducing low-grade interior machine make high-grade in machine expansion valve opening value be less than its maximum opening value MaxVal-ij.
As shown in Figure 1, the method comprises the steps:
Step 1, be in platform every in system machine setting coding ij, wherein, the grade that i characterizes this interior machine is i-th grade, and 1≤i≤N, N is whole interior machine number of degrees; It is machine in jth platform in i-th grade that j characterizes this interior machine, and 1≤j≤Mi, Mi is i-th grade of interior machine number had.
Setting grade according to comprise room towards, floor, area, warming effect, whether be VIP user room etc.No matter air-conditioning work is under refrigeration or heating mode, and these environmental factors can cause the load difference of interior machine, and that the factor of user can cause air-conditioning work effect requirements is high or low.So can be interior machine setting grade accordingly.
Step 2, set minimum opening value MinVal-ij and maximum opening value MaxVal-ij for the expansion valve of machine in every platform; The initial value arranging i is N, and the initial value arranging j is 1.
Minimum opening value MinVal-ij is a fixed value, such as 200; The initial value of maximum opening value MaxVal-ij is a fixed value, such as 480, but in every platform, the maximum opening value MaxVal-ij of machine may change in follow-up adjustment process.In system, in every platform, the minimum opening value MinVal-ij of machine and/or maximum opening value MaxVal-ij can identical, also can be different, determine according to actual service condition.
Whether step 3, the expansion valve opening value detecting machine in the i-th j platform are more than or equal to its maximum opening value MaxVal-ij, are more than or equal to, go to step 4; Be less than, go to step 5;
Step 4, reduce the expansion valve opening of machine in every platform in the i-th-1 grade to the 1st grade, go to step 3.The concrete grammar reducing the expansion valve opening of machine in every platform in the i-th-1 grade to the 1st grade is not limit, method for optimizing is: the expansion valve opening value of machine in platform every in the i-th-1 grade to the 1st grade is adjusted to the K of currency doubly, wherein, 0 < K < 1.The K value corresponding to interior machine of different brackets can be the same or different, and preferably, the lower grade then corresponding K value of interior machine is less.
In step 5, determining step 3, whether j equals Mi, is not equal to, and j assignment is j+1 and goes to step 3; Equal, go to step 6;
Step 6, expansion valve opening value record current for machine in platform every in the i-th-1 grade to the 1st grade is respectively the new maximum opening value MaxVal of this interior machine; I assignment is i-1, j assignment is 1, goes to step 7;
Step 7, judge whether i equals 1, equals, and goes to step 8; Be not equal to, go to step 3;
Step 8, EP (end of program).
In order to realize above-mentioned interior machine control method, this preferred embodiment provides a kind of multi-online air-conditioning system, and this air-conditioning system comprises outer machine, be arranged on system controller on outer machine and at least two interior machines; In every platform, machine is provided with expansion valve.System controller is used for the opening value of machine expansion valve in the every platform of detection and control.According to the instructions for use of machine in each, set the grade of each interior machine successively by interfaces such as interior machine controller or outer machine control panels.By communication mechanism, outer chance knows the grade of each interior machine.
Following table is depicted as twice adjustment record of the multi-online air-conditioning system be made up of 10 interior machines, and mode of operation heats.
In this multi-online air-conditioning system, in 0#, the grade of machine is 7 grades, is the interior machine that the highest grade; In 3# and 8#, the grade of machine is all 6 grades; In 6# and 22#, the grade of machine is all 5 grades; In 11#, the grade of machine is 4 grades; In 10#, the grade of machine is 3 grades; In 15#, the grade of machine is 2 grades; In 18# and 30#, the grade of machine is all 1 grade.
First machine in the 0# that detection level is the highest.Before adjustment starts, its expansion valve opening value is 370, is less than maximum opening value MaxVal, illustrates that air-conditioning effect can satisfy the demands, and without the need to adjustment, continues to detect next interior machine.
Grade be 7 grades only have machine in 0#, so next detect by machine in 6 grades.In 3# and 8#, the grade of machine is all 6 grades, according to sequence number, first detects machine in 3#.It is 480 that adjustment starts machine expansion valve opening value in front 3#, is the initial value of maximum opening value MaxVal, illustrates that the refrigerant flowing to machine in 3# can not meet the air-conditioning effect demand of self, needs to adjust.
The expansion valve opening value of system controller adjustment 1 to 5 grade of all interior machine.Wherein, in 5 grades, machine expansion valve opening value becomes currency and is multiplied by COEFFICIENT K=0.99, in 4 grades, machine expansion valve opening value is adjusted to currency and is multiplied by COEFFICIENT K=0.98, in 3 grades, machine expansion valve opening value is adjusted to currency and is multiplied by COEFFICIENT K=0.97, in 2 grades, machine expansion valve opening value is adjusted to currency and is multiplied by COEFFICIENT K=0.96, and in 1 grade, machine expansion valve opening value is adjusted to currency and is multiplied by COEFFICIENT K=0.95.In upper table, the expansion valve opening value that "-" represents machine in 0# and is all machine in the 8# of 6 grades controls, automatically not by adjustment, the control of system controller.In addition, in the 22# of 5 grades, machine expansion valve opening value reaches minimum of a value, also not by the adjustment of system controller.
At set intervals, outer machine rejudge 6 grades 3# in machine expansion valve opening value whether be less than maximum opening value MaxVal.If be still maximum opening value MaxVal, then regulate, until machine expansion valve opening value is less than maximum opening value MaxVal in 3# next time.If machine expansion valve opening value is 478 in 3# after third time adjustment, is less than its maximum opening value 480, shows that in 3#, air conditioner effect adjusted is complete.
Now in 8#, machine expansion valve opening value is 320, is less than maximum opening value MaxVal, illustrates that air-conditioning effect can satisfy the demands, and without the need to adjustment, continues to detect next interior machine.
The all interior machine of 6 grades all meets the demands, and enters the adjustment of machine in the 5th grade.In 6# and 22#, the grade of machine is all 5 grades, according to machine in sequence number preferred detection 6#.
In 6#, the current aperture of machine is 311, and this value is the new maximum opening value MaxVal formed after machine adjustment in 3#, so machine work at present, at maximum opening value MaxVal, needs all interior machine of adjustment 1 to 4 grade in 6#.In 6#, the expansion valve of machine regulates automatically, but can not exceed new maximum opening value MaxVal, and namely 311.
The COEFFICIENT K that 1 to 4 grade of each grade setting is different, as COEFFICIENT K=0.99 of 4 grades, COEFFICIENT K=0.98 of 3 grades, COEFFICIENT K=0.97 of 2 grades, COEFFICIENT K=0.96 of 1 grade.At set intervals, outer machine rejudges machine expansion valve opening value in 6# and whether is less than 311.
If be still maximum opening value, adjust until machine expansion valve opening value is less than maximum opening value in 6# next time.Suppose third time regulate after in 6# machine expansion valve opening value be 308, be less than its maximum opening value 311, show in 6# that machine is adjusted and put in place, continue next interior machine of detection.
In 22#, machine is operated in minimum opening value MinVal, and the demand being enough to meet air-conditioning is described, without the need to adjustment, continues to detect next interior machine.
Next be the adjustment of machine in 4 grades, repeat above-mentioned Suitable content.By that analogy until machine in lowermost level after adjustment terminates.
Then do not adjust when the expansion valve opening value of interior machine is minimum opening value.After system is again started shooting or restarted, then whether the expansion valve that system controller detects machine in every platform successively according to grade order from high to low is again operated in maximum opening value.
Preferred embodiment two:
This preferred embodiment provides machine control method and the multi-online air-conditioning system for realizing this interior machine control method in a kind of multi-online air-conditioning system, the content of control method and the structure of air-conditioning system substantially identical with preferred embodiment one.This control method to be respectively in multiple stage machine setting grade, the expansion valve opening that system controller controls machine in every platform respectively with ensure grade high in function be preferentially in the duty that expansion valve opening value is less than its maximum opening value MaxVal-ij.This air-conditioning system comprises outer machine, system controller and at least two interior machines; In every platform, machine is provided with expansion valve.System controller is used for the opening value of machine expansion valve in the every platform of detection and control.
Difference is: the concrete steps of control method are not limit, and can realize the method; The maximum opening value MaxVal of expansion valve of machine in adjustment inferior grade, COEFFICIENT K can identical also can be different according to the difference of grade.
System controller can be arranged on outer machine, also can be arranged on other position, can be interior machine setting grade timely and accurately, detect machine in the current expansion valve opening value of interior machine and adjustment inferior grade.
In adjustment process, in certain one-level, again grade can be set as new maximum opening value lower than the current opening value of expansion valve of machine in this one-level after all adjusting by all interior machines; Also after adjustment each time, all the current opening value of expansion valve of machine in controlled every platform can be set as new maximum opening value.
Claims (10)
1. machine control method in a multi-online air-conditioning system, it is characterized in that, the method to be respectively in multiple stage machine setting grade, the expansion valve opening that system controller controls machine in every platform respectively with ensure grade high in function be preferentially in the duty that expansion valve opening value is less than its maximum opening value MaxVal-ij.
2. machine control method in multi-online air-conditioning system according to claim 1, is characterized in that, by the expansion valve opening reducing low-grade interior machine make high-grade in machine expansion valve opening value be less than its maximum opening value MaxVal-ij.
3. machine control method in multi-online air-conditioning system according to claim 1 and 2, is characterized in that, described method comprises the steps:
Step 1, be in platform every in system machine setting coding ij, wherein, the grade that i characterizes this interior machine is i-th grade, and 1≤i≤N, N is whole interior machine number of degrees; It is machine in jth platform in i-th grade that j characterizes this interior machine, and 1≤j≤Mi, Mi is i-th grade of interior machine number had;
Step 2, set minimum opening value MinVal-ij and maximum opening value MaxVal-ij for the expansion valve of machine in every platform; The initial value arranging i is N, and the initial value arranging j is 1;
Whether step 3, the expansion valve opening value detecting machine in the i-th j platform are more than or equal to its maximum opening value MaxVal-ij, are more than or equal to, go to step 4; Be less than, go to step 5;
Step 4, reduce the expansion valve opening of machine in every platform in the i-th-1 grade to the 1st grade, go to step 3;
In step 5, determining step 3, whether j equals Mi, is not equal to, and j assignment is j+1 and goes to step 3; Equal, go to step 6;
Step 6, expansion valve opening value record current for machine in platform every in the i-th-1 grade to the 1st grade is respectively the new maximum opening value MaxVal of this interior machine; I assignment is i-1, j assignment is 1, goes to step 7;
Step 7, judge whether i equals 1, equals, and goes to step 8; Be not equal to, go to step 3;
Step 8, EP (end of program).
4. machine control method in multi-online air-conditioning system according to claim 3, it is characterized in that, in step 3, the method reducing the expansion valve opening of machine in every platform in the i-th-1 grade to the 1st grade is: the expansion valve opening value of machine in platform every in the i-th-1 grade to the 1st grade is adjusted to the K of currency doubly, wherein, 0 < K < 1.
5. machine control method in multi-online air-conditioning system according to claim 4, is characterized in that, the K value corresponding to interior machine of different brackets is different.
6. machine control method in multi-online air-conditioning system according to claim 5, is characterized in that, the lower grade then corresponding K value of interior machine is less.
7. machine control method in multi-online air-conditioning system according to claim 1 and 2, is characterized in that, then no longer adjusts when the expansion valve opening value of interior machine is minimum opening value.
8. machine control method in multi-online air-conditioning system according to claim 1 and 2, it is characterized in that, after system is again started shooting or restarted, then whether the expansion valve that system controller detects machine in every platform successively according to grade order from high to low is again operated in maximum opening value.
9. one kind for realize as arbitrary in claim 1 to 8 as described in the multi-online air-conditioning system of machine control method, described air-conditioning system comprises outer machine and at least two interior machines, in every platform, machine is provided with expansion valve, it is characterized in that, described air-conditioning system also comprises system controller, and described system controller is used for the opening value of machine expansion valve in the every platform of detection and control.
10. multi-online air-conditioning system according to claim 9, is characterized in that, described system controller is arranged on described outer machine.
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Cited By (5)
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| CN105588273A (en) * | 2015-09-30 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Control method for opening degree of electronic expansion valves, indoor unit, outdoor unit and air-conditioner |
| CN108253589A (en) * | 2018-01-03 | 2018-07-06 | 广东美的暖通设备有限公司 | Energy-saving control method, device and the storage medium of multi-online air-conditioning system |
| CN109458698A (en) * | 2018-11-08 | 2019-03-12 | 珠海格力电器股份有限公司 | air conditioner defrosting method and air conditioner |
| CN111397119A (en) * | 2020-03-20 | 2020-07-10 | 青岛海信日立空调系统有限公司 | Multi-split air conditioner |
| CN112303845A (en) * | 2020-09-30 | 2021-02-02 | 青岛海尔空调电子有限公司 | Multi-split air conditioner and control method and control device thereof |
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| CN105588273A (en) * | 2015-09-30 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Control method for opening degree of electronic expansion valves, indoor unit, outdoor unit and air-conditioner |
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| CN108253589A (en) * | 2018-01-03 | 2018-07-06 | 广东美的暖通设备有限公司 | Energy-saving control method, device and the storage medium of multi-online air-conditioning system |
| CN108253589B (en) * | 2018-01-03 | 2020-11-06 | 广东美的暖通设备有限公司 | Energy-saving control method and device for multi-split air conditioning system and storage medium |
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| CN112303845A (en) * | 2020-09-30 | 2021-02-02 | 青岛海尔空调电子有限公司 | Multi-split air conditioner and control method and control device thereof |
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| Publication number | Publication date |
|---|---|
| CN104879875B (en) | 2017-12-22 |
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