CN110332648A - A kind of control method of electric expansion valve, device and multi-gang air conditioner - Google Patents
A kind of control method of electric expansion valve, device and multi-gang air conditioner Download PDFInfo
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- CN110332648A CN110332648A CN201910660697.8A CN201910660697A CN110332648A CN 110332648 A CN110332648 A CN 110332648A CN 201910660697 A CN201910660697 A CN 201910660697A CN 110332648 A CN110332648 A CN 110332648A
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- indoor unit
- expansion valve
- extra heavy
- electric expansion
- heavy pipe
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Classifications
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of control method of electric expansion valve, device and multi-gang air conditioner, above-mentioned control method the following steps are included: S1, the standby indoor unit of detection import extra heavy pipe temperature TB extra heavy pipeWith outlet capillary temperature TB tubule；S2, detection booting indoor unit electric expansion valve aperture PA；Delivery temperature T outside S3, sensing chamberExhaust；S4, according to step S1~S3 detect data formulate standby indoor unit electric expansion valve control strategy.Through the invention, under heating mode, in the case where guaranteeing multi-gang air conditioner balance, the lower noise that standby indoor unit is generated also can't hear the noise of refrigerant flowing to minimum indoors.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of control method of electric expansion valve, device and more
Gang air conditioner.
Background technique
Multi-gang air conditioner is usually by one or more outdoor unit dragging multiple indoor unit, and every indoor unit is to a room
It heats.It is directed to multi-gang air conditioner at present, when user only opens an indoor unit heating, other indoor units keep closing
Machine state, since the compressor operating of outdoor unit guarantees system stable operation in order to avoid high voltage fault, the room of other shutdown
The electric expansion valve of interior machine will not completely close, and be to maintain a lesser standby aperture, such as 40~60 steps, to guarantee sky
Adjusting system balance, but often due to standby expansion valve has certain aperture, practical complete machine still has on a small quantity in the process of running
Refrigerant flow through standby interior machine caused to generate noise, influence customer experience effect, cause to complain phenomenon after sale.
Summary of the invention
Problems solved by the invention is to provide control method, device and the multi-gang air conditioner of a kind of electric expansion valve, system
Under heat pattern, in the case where guaranteeing multi-gang air conditioner balance, lower noise that standby indoor unit is generated to minimum,
Also it can't hear the noise of refrigerant flowing in interior.
To solve the above problems, the invention adopts the following technical scheme:
According to an aspect of the invention, there is provided a kind of control method of electric expansion valve comprising following steps:
The import extra heavy pipe temperature T of S1, the standby indoor unit of detectionB extra heavy pipeWith outlet capillary temperature TB tubule；
S2, detection booting indoor unit electric expansion valve aperture PA；
Delivery temperature T outside S3, sensing chamberExhaust；
S4, according to step S1~S3 detect data formulate standby indoor unit electric expansion valve control strategy.
Under heating mode, in the case where guaranteeing multi-gang air conditioner balance, the noise that standby indoor unit is generated drops
As low as minimum.
In certain embodiments of the present invention, in step s 4,
When the data of step S1~S3 detection meet condition C, big control is carried out out to the electric expansion valve of standby indoor unit
System；When the data of step S1~S3 detection meet condition D, the electric expansion valve of standby indoor unit is carried out turning down control；When
When the data of step S1~S3 detection be both unsatisfactory for condition C or be unsatisfactory for condition D, the aperture of the electric expansion valve of standby indoor unit
It remains unchanged.
In certain embodiments of the present invention,
The condition C are as follows: TB extra heavy pipe-TB tubule≥C1℃、PA≥C2、TExhaust≥C3℃；
The condition D are as follows: TB extra heavy pipe-TB tubule≤D1℃、PA≤D2、TExhaust≤D3℃。
In certain embodiments of the present invention, step S4 is executed according to following procedure: judge whether the condition C is true,
If so, executing valve opening control process, the electronic expansion valve opening of standby indoor unit is opened greatly according to certain rate；If not,
Then judge whether the condition D is true, closes valve control process if so, executing, the electronic expansion valve opening of standby indoor unit is pressed
It is turned down according to certain rate；If not, the electronic expansion valve opening of standby indoor unit remains unchanged.
In certain embodiments of the present invention, control method further include:
Step S1~S4 is constantly repeated, lasting control and regulation are carried out to the aperture of the electric expansion valve of standby indoor unit.
According to another aspect of the present invention, a kind of control device of electric expansion valve is additionally provided comprising:
Extra heavy pipe sensor, for detecting the import extra heavy pipe temperature of standby indoor unit；
Tubule sensor, for detecting the outlet capillary temperature of standby indoor unit；
Electronic expansion valve opening detection module, for detecting the electronic expansion valve opening of booting indoor unit；
Exhaust gas temperature sensor, for sensing chamber outside delivery temperature；
Control module, for according to the import extra heavy pipe temperature of standby indoor unit, outlet capillary temperature, the indoor unit that is switched on electricity
The delivery temperature of sub- expansion valve opening and outdoor formulates the control strategy of the electric expansion valve of standby indoor unit.
In certain embodiments of the present invention, the extra heavy pipe sensor, tubule sensor, electronic expansion valve opening detect mould
Block is multiple, one extra heavy pipe sensor of each indoor unit configuration, tubule sensor and electronic expansion valve opening detection module.
In certain embodiments of the present invention, the control module includes:
First judgment module, for judging whether the following conditions are true: TB extra heavy pipe-TB tubule≥C1℃、PA≥C2、TExhaust≥C3℃；
Second judgment module, for judging whether the following conditions are true: TB extra heavy pipe-TB tubule≤D1℃、PA≤D2、TExhaust≤D3℃。
In certain embodiments of the present invention, the control strategy includes to give an order:
Valve opening instruction: the electronic expansion valve opening of standby indoor unit is opened greatly according to certain rate；
Close valve instruction: the electronic expansion valve opening of standby indoor unit is turned down according to certain rate；
Remain unchanged instruction: the electronic expansion valve opening of standby indoor unit remains unchanged.
According to another aspect of the present invention, a kind of multi-gang air conditioner is additionally provided, including electronics as described above is swollen
The control device of swollen valve.
Detailed description of the invention
Fig. 1 is the principles and structure simple diagram of multi-gang air conditioner.
The step of Fig. 2 is the control method of electric expansion valve of the embodiment of the present invention is schemed.
Fig. 3 is the flow diagram of the control method of electric expansion valve of the embodiment of the present invention.
Fig. 4 is the structural schematic diagram of the control device of electric expansion valve of the embodiment of the present invention.
Description of symbols:
1- compressor；2- indoor unit；3- outdoor unit；4- electric expansion valve；5- tubule sensor；6- extra heavy pipe sensor；7-
Exhaust gas temperature sensor.
Specific embodiment
Before the present invention is introduced, the working principle of multi-gang air conditioner is illustrated first, with one drag two
For type, as shown in Figure 1, multi-gang air conditioner includes 1, two, the compressor outdoor unit 3 of indoor unit 2, one, operational process
Are as follows: when heating, refrigerant is flowed out from compressor 1, flows into extra heavy pipe, the heat exchanger of indoor unit 2 is passed through by extra heavy pipe outflow, in blower
Under effect, air passes through the surface of heat exchanger, and refrigerant becomes liquid from gaseous state in heat exchanger, and the heat released is passed through
The air for crossing heat exchanger surface siphons away, and air becomes hot wind and is blown into room；Liquid refrigerant by indoor unit 2 heat exchanger stream
Out, it after tubule and electric expansion valve 4, flows into the heat exchanger of outdoor unit 3, under the action of blower, air is by heat exchange
The surface of device, refrigerant become gaseous state from liquid, and the heat in air is siphoned away by refrigerant, and gaseous refrigerant flows back to compressor 1,
Thus circulation is gone down, and realizes heating operations.When refrigeration, change the flow direction of refrigerant, refrigerant is made to first flow into outdoor unit 3 again
Indoor unit 2 is flowed into, realizes process of refrigerastion.
Connecting tube between compressor 1 and indoor unit 2 includes extra heavy pipe, and extra heavy pipe sensor 6, extra heavy pipe sensing are provided on extra heavy pipe
Device 6 can detecte the temperature of extra heavy pipe, and the connecting tube between indoor unit 2 and outdoor unit 3 includes tubule, and tubule biography is provided on tubule
Sensor 5, tubule sensor 5 can detecte the temperature of tubule；Electric expansion valve 4 is additionally provided between indoor unit 2 and outdoor unit 3.
When user only opens an indoor unit heating, other indoor units remain turned off state, due to the compressor of outdoor unit
Work guarantees system stable operation in order to avoid high voltage fault, and the electric expansion valve of the indoor unit of other shutdown cannot close completely
It closes, and is to maintain a lesser standby aperture, such as 40~60 steps, to guarantee that air-conditioning system balances, but often due to it is standby
Expansion valve have certain aperture, practical complete machine still has a small amount of refrigerant to flow through in the process of running causes standby interior machine to produce
Raw noise when heating, is guaranteeing multi-gang air conditioner therefore, it is necessary to a kind of control method about standby electric expansion valve
In the case where balance, by the lower noise of standby indoor unit generation to minimum.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
In embodiments of the present invention, a kind of control method of electric expansion valve is provided, as shown in Figure 2 comprising following
Step:
The import extra heavy pipe temperature T of S1, the standby indoor unit of detectionB extra heavy pipeWith outlet capillary temperature TB tubule；
The control method of electric expansion valve of the invention is carried out under heating mode, when heating, for indoor unit
For, extra heavy pipe side belongs to inlet side, and tubule side belongs to outlet side, respectively to the import extra heavy pipe temperature of the indoor unit of standby mode and
Outlet capillary temperature is detected.
S2, detection booting indoor unit electric expansion valve aperture PA；
It should be noted that in step s 2, detecting the aperture of the electric expansion valve of the indoor unit of all open states.
Delivery temperature T outside S3, sensing chamberExhaust；
As shown in Figure 1, exhaust gas temperature sensor 7 be arranged near compressor 1, to sensing chamber outside delivery temperature.
S4, according to step S1~S3 detect data formulate standby indoor unit electric expansion valve control strategy.
In this step, include three kinds for the control scene of electric expansion valve: valve opening control is closed valve control and is maintained not
Become, accordingly, control strategy include: when step S1~S3 detection data meet condition C when, it is swollen to the electronics of standby indoor unit
Swollen valve carries out out big control；When the data of step S1~S3 detection meet condition D, to the electric expansion valve of standby indoor unit into
Row turns down control；When the data of step S1~S3 detection be both unsatisfactory for condition C or be unsatisfactory for condition D, the electricity of standby indoor unit
The aperture of sub- expansion valve remains unchanged.
Above-mentioned condition C are as follows: TB extra heavy pipe-TB tubule≥C1℃、PA≥C2、TExhaust≥C3℃；Above-mentioned condition D are as follows: TB extra heavy pipe-TB tubule≤
D1℃、PA≤D2、TExhaust≤D3℃。
By above-mentioned control program, (the making an uproar of generating of standby refrigerant flowing when system operating load is smaller can be effectively solved
Sound can obviously be heard), the noise problem flowed by the standby valve opening of pass valve control guarantee refrigerant caused by excessive.Work as system
When operating load is heavier (noise that the flowing of standby refrigerant generates since load aggravates to need just normally opened big valve to walk load removal, also without
Obvious refrigerant flow noise problem), it is controlled by valve opening and guarantees air-conditioning stable operation.
The control flow of electric expansion valve is described in detail below, as shown in figure 3, by taking one drags three as an example, and only to open one
Platform indoor unit is booting heating mode (A machine), other two indoor units (B1 machine and B2 machine) are at for shutdown mode to explain
Bright control method, specific as follows:
Step S1, the import extra heavy pipe temperature (T of standby indoor unit B1 is detectedB1 extra heavy pipe), the outlet tubule temperature of standby indoor unit B1
Spend (TB1 tubule)；Detect the import extra heavy pipe temperature (T of standby indoor unit B2B2 extra heavy pipe), the outlet capillary temperature of standby indoor unit B2
(TB2 tubule)；
Step S2, the electronic expansion valve opening (P of detection booting indoor unit AA)；
Step S3, delivery temperature T outside sensing chamberExhaust；
Step S4, judge whether the following conditions are true: TB1 extra heavy pipe-TB1 tubule≥50℃、PA>=450 steps, TExhaust>=90 DEG C, if
It is to execute valve opening control process, the electronic expansion valve opening of standby indoor unit B1 opens big control according to 1 step/60s rate, to
The maximum step number of machine indoor unit B1 is no more than 40 steps；If not, judging whether the following conditions are true: TB1 extra heavy pipe-TB1 tubule≤25℃、PA
≤ 350 steps, TExhaust≤ 80 DEG C, valve control process is closed if so, executing, the electronic expansion valve opening of standby indoor unit B1 is according to 1
Step/60s rate turns down control, and minimum step number is not less than 20 steps；If not, the electronic expansion valve opening of standby indoor unit B1 is tieed up
It holds constant.
Judge whether the following conditions are true: TB2 extra heavy pipe-TB2 tubule≥50℃、PA>=450 steps, TExhaust>=90 DEG C, if so, executing
The expansion valve opening of valve opening control process, standby indoor unit B2 opens big control, the maximum of indoor unit B2 according to 1 step/60s rate
Step number is no more than 40 steps；If not, judging whether the following conditions are true: TB2 extra heavy pipe-TB2 tubule≤25℃、PA≤ 350 steps, TExhaust≤80
DEG C, valve control process is closed if so, executing, the expansion valve opening of standby B2 turns down control, most small step according to 1 step/60s rate
Number is not less than 20 steps；If not, the electronic expansion valve opening of standby indoor unit B2 remains unchanged.
In embodiments of the present invention, a kind of control device of electric expansion valve is additionally provided, as shown in figure 4, comprising: thick
Tube sensor 6, tubule sensor 5, electronic expansion valve opening detection module, exhaust gas temperature sensor 7, control module.
Extra heavy pipe sensor 6 is used to detect the import extra heavy pipe temperature of standby indoor unit, and tubule sensor 5 is for detecting standby room
The outlet capillary temperature of interior machine, electronic expansion valve opening detection module are used to detect the electronic expansion valve opening of booting indoor unit,
Exhaust gas temperature sensor 7 is used for thick according to the import of above-mentioned standby indoor unit for the delivery temperature outside sensing chamber, control module
Tube temperature degree, outlet capillary temperature, the electronic expansion valve opening for the indoor unit that is switched on and the delivery temperature of outdoor formulate standby interior
The control strategy of the electric expansion valve of machine.
Specifically, extra heavy pipe sensor 6 is multiple, and quantity is equal with the number of standby indoor unit, each standby interior
Machine configures an extra heavy pipe sensor 6.Likewise, tubule sensor 5 is multiple, and the number phase of quantity and standby indoor unit
Deng one tubule sensor 5 of each standby indoor unit configuration.
Control module includes first judgment module and the second judgment module, and first judgment module is for judging that the following conditions are
No establishment: TB1 extra heavy pipe-TB1 tubule≥50℃、PA>=450 steps, TExhaust>=90 DEG C, corresponding instruction is executed according to judging result, specifically,
If a determination be made that being then to execute valve opening control instruction, the electronic expansion valve opening of standby indoor unit B1 is according to 1 step/60s
Rate opens big control, and the maximum step number of standby indoor unit B1 is no more than 40 steps；Second judgment module is for judging that the following conditions are
No establishment: TB1 extra heavy pipe-TB1 tubule≤25℃、PA≤ 350 steps, TExhaust≤ 80 DEG C, corresponding instruction is executed according to judging result, specifically,
If a determination be made that being then to execute to close valve control instruction, the electronic expansion valve opening of standby indoor unit B1 is according to 1 step/60s
Rate turns down control, and minimum step number is not less than 20 steps；When the judging result of first judgment module is no and the second judgment module
Judging result be it is no when, execute the instruction that the electronic expansion valve opening of standby indoor unit B1 remains unchanged.
By valve opening, valve and the three kinds of control and regulation modes that remain unchanged are closed, are continued for controlling to adjust, it is steady in air-conditioning
Under the premise of fixed operation, the noise that refrigerant in standby indoor unit flows is minimized.
In embodiments of the present invention, a kind of multi-gang air conditioner is additionally provided comprising the control of above-mentioned electric expansion valve
Device processed.
Through the invention, under heating mode, in the case where guaranteeing multi-gang air conditioner balance, standby indoor unit is produced
Raw lower noise also can't hear the noise of refrigerant flowing to minimum indoors.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of control method of electric expansion valve, which is characterized in that itself the following steps are included:
The import extra heavy pipe temperature T of S1, the standby indoor unit of detectionB extra heavy pipeWith outlet capillary temperature TB tubule；
S2, detection booting indoor unit electric expansion valve aperture PA；
Delivery temperature T outside S3, sensing chamberExhaust；
S4, according to step S1~S3 detect data formulate standby indoor unit electric expansion valve control strategy.
2. control method according to claim 1, which is characterized in that in step s 4,
When the data of step S1~S3 detection meet condition C, big control is carried out out to the electric expansion valve of standby indoor unit；When
When the data of step S1~S3 detection meet condition D, the electric expansion valve of standby indoor unit is carried out turning down control；As step S1
When the data of~S3 detection be both unsatisfactory for condition C or be unsatisfactory for condition D, the aperture of the electric expansion valve of standby indoor unit is maintained not
Become.
3. control method according to claim 2, which is characterized in that
The condition C are as follows: TB extra heavy pipe-TB tubule≥C1℃、PA≥C2、TExhaust≥C3℃；
The condition D are as follows: TB extra heavy pipe-TB tubule≤D1℃、PA≤D2、TExhaust≤D3℃。
4. control method according to claim 2, which is characterized in that step S4 is executed according to following procedure: described in judgement
Whether condition C is true, if so, executing valve opening control process, the electronic expansion valve opening of standby indoor unit is according to certain speed
Rate is opened greatly；If it is not, then judging whether the condition D is true, valve control process, the electricity of standby indoor unit are closed if so, executing
Sub- expansion valve opening is turned down according to certain rate；If not, the electronic expansion valve opening of standby indoor unit remains unchanged.
5. control method according to claim 1-4, which is characterized in that further include:
Step S1~S4 is constantly repeated, lasting control and regulation are carried out to the aperture of the electric expansion valve of standby indoor unit.
6. a kind of control device of electric expansion valve, characterized in that it comprises:
Extra heavy pipe sensor (6), for detecting the import extra heavy pipe temperature of standby indoor unit；
Tubule sensor (5), for detecting the outlet capillary temperature of standby indoor unit；
Electronic expansion valve opening detection module, for detecting the electronic expansion valve opening of booting indoor unit；
Exhaust gas temperature sensor (7), for sensing chamber outside delivery temperature；
Control module, for swollen according to the import extra heavy pipe temperature of standby indoor unit, outlet capillary temperature, the electronics for the indoor unit that is switched on
Swollen valve opening and the delivery temperature of outdoor formulate the control strategy of the electric expansion valve of standby indoor unit.
7. control device according to claim 6, which is characterized in that the extra heavy pipe sensor (6), tubule sensor (5),
Electronic expansion valve opening detection module is multiple, each indoor unit configuration one extra heavy pipe sensor (6), tubule sensor (5)
With electronic expansion valve opening detection module.
8. control device according to claim 6, which is characterized in that the control module includes:
First judgment module, for judging whether the following conditions are true: TB extra heavy pipe-TB tubule≥C1℃、PA≥C2、TExhaust≥C3℃；
Second judgment module, for judging whether the following conditions are true: TB extra heavy pipe-TB tubule≤D1℃、PA≤D2、TExhaust≤D3℃。
9. control device according to claim 6, which is characterized in that the control strategy includes to give an order:
Valve opening instruction: the electronic expansion valve opening of standby indoor unit is opened greatly according to certain rate；
Close valve instruction: the electronic expansion valve opening of standby indoor unit is turned down according to certain rate；
Remain unchanged instruction: the electronic expansion valve opening of standby indoor unit remains unchanged.
10. a kind of multi-gang air conditioner, which is characterized in that including electric expansion valve as claim in any one of claims 6-9
Control device.
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| CN201910660697.8A CN110332648B (en) | 2019-07-22 | 2019-07-22 | Control method and device of electronic expansion valve and multi-connected air conditioning system |
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| CN110986224A (en) * | 2019-11-07 | 2020-04-10 | 珠海格力电器股份有限公司 | Air conditioner, control method thereof and storage medium |
| CN112344537A (en) * | 2020-11-17 | 2021-02-09 | 珠海格力电器股份有限公司 | Noise reduction control method and device for indoor unit of multi-split air conditioner and multi-split air conditioner |
| CN113531856A (en) * | 2020-04-22 | 2021-10-22 | 青岛海尔空调电子有限公司 | Multi-connected air conditioning system and refrigerant flow control method thereof |
| CN114992816A (en) * | 2022-06-20 | 2022-09-02 | 宁波奥克斯电气股份有限公司 | Control method and device of multi-split air conditioner, air conditioner and readable storage medium |
| WO2023160065A1 (en) * | 2022-02-28 | 2023-08-31 | 青岛海尔空调电子有限公司 | Method for controlling multi-split air conditioning system |
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