CN105987537A - Multi-connected air conditioning system and variable load control method thereof - Google Patents
Multi-connected air conditioning system and variable load control method thereof Download PDFInfo
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- CN105987537A CN105987537A CN201510062054.5A CN201510062054A CN105987537A CN 105987537 A CN105987537 A CN 105987537A CN 201510062054 A CN201510062054 A CN 201510062054A CN 105987537 A CN105987537 A CN 105987537A
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Abstract
The invention discloses a multi-connected air conditioning system and a variable load control method thereof. The multi-connected air conditioning system comprises a compressor, a four-way valve, an outdoor heat exchanger, an electronic throttling part, a gas side stop valve, an indoor heat exchanger, a liquid side stop valve, a first solenoid valve, a second solenoid valve, a liquid storage tank, a third solenoid valve and a capillary tube. By setting the liquid storage tank and the three solenoid valves, whether the current quantity of a cold medium is proper or not under refrigeration and heating operation according to the actual operation load size through conditions including pressure, temperature, overheating degree and the like is judged; and when the circulating amount of the cold medium needs to be adjusted, storage and release of the cold medium are realized through switching on and off a battery valve, and the actual circulating amount of the cold medium is adjusted.
Description
Technical field
The invention belongs to appliance field, relate to multi-online air-conditioning system, particularly relate to a kind of multi-gang air-conditioner system
System and the control method of varying duty thereof.
Background technology
Multi-online air-conditioning system is usually by an off-premises station equipped with multiple stage indoor set, therefore, in different works
Under condition, different load, the coolant quantity that running needs is change, and general multi-gang air-conditioner system
System is in installation process, and coolant injection amount is to determine by design load at full capacity, can not basis in running
The size of actual load changes actual refrigerant circulation, not only reduces the efficiency that multi-online air-conditioning system runs,
More likely cause compressor to return liquid and produce liquid machine, reduce reliability.
The intelligence of a kind of variable refrigerant volume of Chinese utility model patent of Application No. 200320107603.9 is many
Connection formula central air-conditioning, by pipeline be connected with in turn compressor, high-voltage switch gear, oil eliminator, cross valve,
Condenser, expansion valve part, fluid reservoir, heat exchanger, ball valve, branch pipe, indoor set, cross valve,
Heat exchanger and low tension switch, be connected a liquid bypass solenoid valve between expansion valve part with heat exchanger,
It is connected between oil eliminator with heat exchanger and has unloading pressure to switch gentle bypass battery valve.
The Chinese invention patent of Application No. 200510109088.1 controls for the refrigerant circulation of combined air conditioners
Device and control method, its device includes: adjusting device for amount of coolant, electromagnetic valve, electric expansion valve, air-breathing temperature
Degree sensor and low-pressure sensor, it is swollen with electronics that adjusting device for amount of coolant is connected to condenser by supervisor
Between swollen valve, its chamber is provided with bye-pass, its bye-pass is in series with electromagnetic valve, one arm and compression
Machine exhaustor connect, another arm is connected with suction nozzle, on compressor suction duct connection low-pressure sensor and
Suction temperature sensor, when system is properly functioning, regulation electronic expansion valve opening controls cold medium flux, when super
When going out electronic expansion valve opening scope, then controlling cold medium flux by electromagnetic valve for adjusting, that borrows not only makes device
The coolant of middle accumulation is recovered in system circulation again participate in operating, and makes the system under any circumstance can be real-time
Control refrigerant circulation.
The Chinese utility model patent one air conditioner outdoor unit system of Application No. 200920050508.7, including
There are compressor, cross valve, outdoor heat exchanger, high pressure fluid reservoir, low-pressure liquid storing tank, the wherein coolant of compressor
Outlet is connected with the refrigerant inlet of outdoor heat exchanger and the refrigerant inlet of low-pressure liquid storing tank respectively by cross valve,
The refrigerant exit of outdoor heat exchanger is connected with high pressure fluid reservoir, the refrigerant exit of low-pressure liquid storing tank and compressor
Refrigerant inlet connects, and is wherein additionally provided with for the gas Balanced interface in parallel with outdoor unit modules on low-pressure liquid storing tank,
It is flat with the gas of other one or more outdoor unit modules that low-pressure liquid storing tank balances adapter by gas Balanced interface and gas
Weighing apparatus adapter is connected.
The Chinese utility model patent multi-online air-conditioning system of Application No. 201220426688.6, including outdoor
Heat exchanger, throttle part and at least two branches, wherein, throttle part has the first end and the second end；Room
One end of external heat exchanger is connected with the first end of throttle part by outdoor electrical expansion valve, Super long tube；Branch
Portion includes indoor heat exchanger and indoor electronic expansion valve, one end of this indoor electronic expansion valve and indoor heat exchanger
Connection, the other end connects with the second end of throttle part.
The Chinese invention patent one multi-gang air-conditioner of Application No. 201410060464.1 and heat pump thereof,
Compressor that heat pump includes being sequentially connected with, oil eliminator, cross valve, outdoor condenser, main electronics are swollen
Swollen valve and off-premises station liquid side stop valve, also include: first turned on to off-premises station liquid side stop valve by cross valve
Unidirectional solenoid valve；Turned on to cross valve by off-premises station liquid side stop valve, and in parallel with the first single-pass electromagnetic valve
It is connected, separately between second single-pass electromagnetic valve, and second single-pass electromagnetic valve one end with outdoor condenser and cross valve
It is connected between one end with main electric expansion valve and off-premises station liquid side stop valve.
A kind of air conditioning system of the Chinese utility model patent of Application No. 201420152209.5, including successively
The compressor being connected, cross valve, outdoor heat exchanger and indoor set, coolant actuator, coolant actuator
Liquid refrigerants pipe between entrance point with outdoor heat exchanger and indoor set is connected, the port of export of coolant actuator with
The entrance point of compressor is connected.
Summary of the invention
The main object of the present invention is to provide the control method of a kind of multi-online air-conditioning system and varying duty thereof, can
Refrigerant circulation is adjusted by the conditions such as the pressure and temperature according to system.
The present invention adopts the following technical scheme that
A kind of multi-online air-conditioning system, including:
Compressor, described compressor has air vent and gas returning port；
Cross valve, described cross valve has first interface, the second interface, the 3rd interface and the 4th interface, institute
The air vent of the first interface and described compressor of stating cross valve is connected, the 3rd interface of described cross valve and institute
The gas returning port stating compressor connects；
Outdoor heat exchanger, one end of described outdoor heat exchanger is connected with the 4th interface of described cross valve；
Electronic throttle parts, described electronic throttle parts have the first end and the second end, described electronic throttle portion
First end of part is connected with the other end of described outdoor heat exchanger；
Gas side stop valve, one end of described gas side stop valve is connected with the second end of described electronic throttle parts；
Indoor heat exchanger, one end of described indoor heat exchanger is connected with the other end of described gas side stop valve；
Liquid side stop valve, one end of described liquid side stop valve is connected with the other end of described indoor heat exchanger, institute
Second interface of the other end and described cross valve of stating liquid side stop valve is connected；
First electromagnetic valve, the input of described first electromagnetic valve is connected with the other end of described outdoor heat exchanger,
And it is in parallel with the first end of described electronic throttle parts；
Second electromagnetic valve, the input of described second electromagnetic valve is connected with one end of described gas side stop valve, and
In parallel with the second end of described electronic throttle parts；
After fluid reservoir, the outfan of described first electromagnetic valve and the outfan parallel connection of described second electromagnetic valve, with
The input of described fluid reservoir connects；
3rd electromagnetic valve, the described input of the 3rd electromagnetic valve is connected with the outfan of described fluid reservoir；
Capillary tube, the input of described capillary tube is connected with the outfan of described 3rd electromagnetic valve, described capillary
The outfan of pipe is connected with the gas returning port of described compressor.
Concrete, described outdoor heat exchanger is air cooling heat exchanger.
Concrete, it is provided with suction temperature sensor and back pressure sensing near the gas returning port of described compressor
Device, is provided with exhaust gas temperature sensor and back pressure transducer near the air vent of described compressor.
The control method of above-mentioned multi-online air-conditioning system varying duty:
Under kind of refrigeration cycle pattern, when air conditioning system actual motion load reduces, it is judged that when cold medium flux is too much,
Close the second electromagnetic valve, open the first electromagnetic valve and the 3rd electromagnetic valve；When actual motion load increases, it is judged that
When cold medium flux is very few, close the first electromagnetic valve and the second electromagnetic valve, open the 3rd electromagnetic valve；Cold when judging
When matchmaker's flow is normal, close the first battery valve, the second electromagnetic valve and the 3rd electromagnetic valve；
Heat under circulation pattern, when air conditioning system actual motion load reduces, it is judged that when cold medium flux is too much,
Close the first electromagnetic valve, open the second electromagnetic valve and the 3rd electromagnetic valve；When actual motion load increases, it is judged that
When cold medium flux is very few, close the first electromagnetic valve and the second electromagnetic valve, open the 3rd electromagnetic valve；Cold when judging
When matchmaker's flow is normal, close the first battery valve, the second electromagnetic valve and the 3rd electromagnetic valve.
From the above-mentioned description of this invention, compared with prior art, the present invention by arrange fluid reservoir and
Three electromagnetic valves, under refrigeration and heating operation, according to actual motion payload, by pressure, temperature
The current coolant quantities of conditional judgment such as degree, the degree of superheat are the most suitable, when refrigerant circulation needs regulation, pass through
Switching battery valve, it is achieved the storage of coolant and release, regulates coolant actual cycle amount.
Accompanying drawing explanation
Fig. 1 is the system diagram of a kind of multi-online air-conditioning system of the present invention.
Fig. 2 is the first system diagram of a kind of multi-online air-conditioning system refrigeration mode of the present invention.
Fig. 3 is the second system diagram of a kind of multi-online air-conditioning system refrigeration mode of the present invention.
Fig. 4 is the third system diagram of a kind of multi-online air-conditioning system refrigeration mode of the present invention.
Fig. 5 is the first system diagram of a kind of multi-online air-conditioning system heating mode of the present invention.
Fig. 6 is the second system diagram of a kind of multi-online air-conditioning system heating mode of the present invention.
Fig. 7 is the third system diagram of a kind of multi-online air-conditioning system heating mode of the present invention.
Detailed description of the invention
Below by way of detailed description of the invention, the invention will be further described.
A kind of multi-online air-conditioning system as shown in Figure 1 and the control method of varying duty thereof, this multi-gang air-conditioner
System includes: compressor 10, and described compressor 10 has air vent 11 and gas returning port 12, described compressor
Suction temperature sensor 13 and back pressure sensor 14, described compressor it is provided with near the gas returning port 12 of 10
Exhaust gas temperature sensor 15 and back pressure transducer 16 it is provided with near the air vent 11 of 10；Cross valve 20,
Described cross valve 20 has first interface the 21, second interface the 22, the 3rd interface 23 and the 4th interface 24, institute
The air vent 11 of the first interface 21 and described compressor 10 of stating cross valve 20 is connected, described cross valve 20
The 3rd interface 23 be connected with the gas returning port 12 of described compressor 10；Outdoor heat exchanger 30, described outdoor is changed
One end 31 of hot device 30 is connected with the 4th interface 24 of described cross valve 20, and described outdoor heat exchanger 30 is
Air cooling heat exchanger, described outdoor heat exchanger 30 is connected with outdoor fan 33；Electronic throttle parts 40, described
Electronic throttle parts 40 have the first end 41 and the second end 42, the first end of described electronic throttle parts 40
41 are connected with the other end 32 of described outdoor heat exchanger 30；Gas side stop valve 50, described gas side stop valve 50
One end 51 be connected with the second end 42 of described electronic throttle parts 40；Indoor heat exchanger 60, described indoor
One end 61 of heat exchanger 60 is connected with the other end 52 of described gas side stop valve 50；Liquid side stop valve 70,
One end 71 of described liquid side stop valve 70 is connected with the other end 62 of described indoor heat exchanger 60, described liquid
The other end 72 of side stop valve 70 is connected with the second interface 22 of described cross valve 20；First electromagnetic valve 80,
The input 81 of described first electromagnetic valve 80 is connected with the other end 32 of described outdoor heat exchanger 30, and with
First end 41 of described electronic throttle parts 40 is in parallel；Second electromagnetic valve 90, described second electromagnetic valve 90
Input 91 is connected with one end 51 of described gas side stop valve 50, and with described electronic throttle parts 40
Second end 42 is in parallel；Fluid reservoir 100, the outfan 82 of described first electromagnetic valve 80 and described second electromagnetism
After outfan 92 parallel connection of valve 90, it is connected with the input 101 of described fluid reservoir 100；3rd electromagnetic valve
110, the input 111 of described 3rd electromagnetic valve 110 is connected with the outfan 102 of described fluid reservoir 100；
Capillary tube 120, the input 121 of described capillary tube 120 and the outfan 112 of described 3rd electromagnetic valve 110
Connecting, the outfan 122 of described capillary tube 120 is connected with the gas returning port 12 of described compressor 10.
The control method of this multi-online air-conditioning system varying duty:
Under kind of refrigeration cycle pattern, when air conditioning system actual motion load reduces, it is judged that when cold medium flux is too much,
Close the second electromagnetic valve 90, open the first electromagnetic valve 80 and the 3rd electromagnetic valve 110, the circulation of coolant such as Fig. 2
The direction of arrow shown in, through outdoor heat exchanger 30 condensed liquid coolant a part through electronic throttle portion
Part 40 reducing pressure by regulating flow, a part enters into fluid reservoir 100 through the first electromagnetic valve 80 and stores；Work as reality
Border operating load increases, it is judged that when cold medium flux is very few, close the first electromagnetic valve 80 and the second electromagnetic valve 90,
Open the 3rd electromagnetic valve 110, the circulation of coolant as shown the direction of arrow in Figure 3, the coolant warp of fluid reservoir 100
Cross the 3rd electromagnetic valve 110 and enter capillary tube 120, join kind of refrigeration cycle；When judging that cold medium flux is normal,
Closing the first battery the 80, second electromagnetic valve 90 and the 3rd electromagnetic valve 110, the circulation of coolant is such as the arrow of Fig. 4
Shown in direction, refrigerant circulation is not regulated；
Heat under circulation pattern, when air conditioning system actual motion load reduces, it is judged that when cold medium flux is too much,
Close the first electromagnetic valve 80, open the second electromagnetic valve 90 and the 3rd electromagnetic valve 110, the circulation of coolant such as Fig. 5
The direction of arrow shown in, through indoor heat exchanger 60 condensed liquid coolant a part through electronic throttle portion
Part 40 reducing pressure by regulating flow, a part enters into fluid reservoir 100 through the second electromagnetic valve 90 and stores；Work as reality
Border operating load increases, it is judged that when cold medium flux is very few, close the first electromagnetic valve 80 and the second electromagnetic valve 90,
Open the 3rd electromagnetic valve 110, the circulation of coolant as shown the direction of arrow in Figure 6, the coolant warp of fluid reservoir 100
Cross the 3rd battery valve 110 and enter capillary tube 120, join and heat in circulation；When judging that cold medium flux is normal
Time, close the first battery valve the 80, second electromagnetic valve 90 and the 3rd electromagnetic valve 110, the circulation of coolant such as Fig. 7
The direction of arrow shown in, refrigerant circulation is not regulated.
Above are only a specific embodiment of the present invention, but the design concept of the present invention is not limited to
This, all changes utilizing this design that the present invention carries out unsubstantiality, the infringement present invention all should be belonged to and protect model
The behavior enclosed.
Claims (4)
1. a multi-online air-conditioning system, including:
Compressor, described compressor has air vent and gas returning port；
Cross valve, described cross valve has first interface, the second interface, the 3rd interface and the 4th interface, institute
The air vent of the first interface and described compressor of stating cross valve is connected, the 3rd interface of described cross valve and institute
The gas returning port stating compressor connects；
Outdoor heat exchanger, one end of described outdoor heat exchanger is connected with the 4th interface of described cross valve；
Electronic throttle parts, described electronic throttle parts have the first end and the second end, described electronic throttle portion
First end of part is connected with the other end of described outdoor heat exchanger；
Gas side stop valve, one end of described gas side stop valve is connected with the second end of described electronic throttle parts；
Indoor heat exchanger, one end of described indoor heat exchanger is connected with the other end of described gas side stop valve；
Liquid side stop valve, one end of described liquid side stop valve is connected with the other end of described indoor heat exchanger, institute
Second interface of the other end and described cross valve of stating liquid side stop valve is connected；
First electromagnetic valve, the input of described first electromagnetic valve is connected with the other end of described outdoor heat exchanger,
And it is in parallel with the first end of described electronic throttle parts；
Second electromagnetic valve, the input of described second electromagnetic valve is connected with one end of described gas side stop valve, and
In parallel with the second end of described electronic throttle parts；
After fluid reservoir, the outfan of described first electromagnetic valve and the outfan parallel connection of described second electromagnetic valve, with
The input of described fluid reservoir connects；
3rd electromagnetic valve, the described input of the 3rd electromagnetic valve is connected with the outfan of described fluid reservoir；
Capillary tube, the input of described capillary tube is connected with the outfan of described 3rd electromagnetic valve, described capillary
The outfan of pipe is connected with the gas returning port of described compressor.
A kind of multi-online air-conditioning system the most according to claim 1, described outdoor heat exchanger is air-cooled
Heat exchanger.
A kind of multi-online air-conditioning system the most according to claim 1, the gas returning port of described compressor is attached
Closely it is provided with suction temperature sensor and back pressure sensor, near the air vent of described compressor, is provided with aerofluxus
Temperature sensor and back pressure transducer.
4. according to the multi-online air-conditioning system varying duty described in claim any one of claims 1 to 3
Control method:
Under kind of refrigeration cycle pattern, when air conditioning system actual motion load reduces, it is judged that when cold medium flux is too much,
Close the second electromagnetic valve, open the first electromagnetic valve and the 3rd electromagnetic valve；When actual motion load increases, it is judged that
When cold medium flux is very few, close the first electromagnetic valve and the second electromagnetic valve, open the 3rd electromagnetic valve；Cold when judging
When matchmaker's flow is normal, close the first battery valve, the second electromagnetic valve and the 3rd electromagnetic valve；
Heat under circulation pattern, when air conditioning system actual motion load reduces, it is judged that when cold medium flux is too much,
Close the first electromagnetic valve, open the second electromagnetic valve and the 3rd electromagnetic valve；When actual motion load increases, it is judged that
When cold medium flux is very few, close the first electromagnetic valve and the second electromagnetic valve, open the 3rd electromagnetic valve；Cold when judging
When matchmaker's flow is normal, close the first battery valve, the second electromagnetic valve and the 3rd electromagnetic valve.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106403413A (en) * | 2016-11-25 | 2017-02-15 | 广州华凌制冷设备有限公司 | Air conditioning system and control method |
| CN108019890A (en) * | 2017-12-05 | 2018-05-11 | 珠海格力电器股份有限公司 | air conditioner energy efficiency control method and device and air conditioner system |
| CN109269137A (en) * | 2016-12-23 | 2019-01-25 | 广东美的暖通设备有限公司 | Multi-line system and its control method |
| CN109931677A (en) * | 2019-02-19 | 2019-06-25 | 广东美的暖通设备有限公司 | Interior machine crosses the control method and device of low temperature valve |
| US10386677B2 (en) | 2017-03-29 | 2019-08-20 | Boe Technology Group Co., Ltd. | Light emitting assembly, light bar, backlight module, display module and transparent display module |
| CN111174368A (en) * | 2020-01-07 | 2020-05-19 | 宁波奥克斯电气股份有限公司 | Method for automatically adjusting refrigerant quantity of air conditioner and air conditioning system |
| CN111435045A (en) * | 2019-01-14 | 2020-07-21 | 青岛海尔空调电子有限公司 | Air conditioner heat pump system |
| CN111486611A (en) * | 2020-04-24 | 2020-08-04 | 深圳麦克维尔空调有限公司 | Air conditioning system and control method thereof |
| CN113154722A (en) * | 2020-12-15 | 2021-07-23 | 国网辽宁省电力有限公司 | Air source heat pump system with refrigerant amount self-adaptive adjustment and control method |
| CN116255762A (en) * | 2023-04-23 | 2023-06-13 | 珠海格力电器股份有限公司 | Refrigerant quantity adjusting method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106403413A (en) * | 2016-11-25 | 2017-02-15 | 广州华凌制冷设备有限公司 | Air conditioning system and control method |
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| CN111435045A (en) * | 2019-01-14 | 2020-07-21 | 青岛海尔空调电子有限公司 | Air conditioner heat pump system |
| CN109931677A (en) * | 2019-02-19 | 2019-06-25 | 广东美的暖通设备有限公司 | Interior machine crosses the control method and device of low temperature valve |
| CN111174368A (en) * | 2020-01-07 | 2020-05-19 | 宁波奥克斯电气股份有限公司 | Method for automatically adjusting refrigerant quantity of air conditioner and air conditioning system |
| CN111174368B (en) * | 2020-01-07 | 2021-10-15 | 宁波奥克斯电气股份有限公司 | Method and air-conditioning system for an air conditioner to automatically adjust the amount of refrigerant |
| CN111486611A (en) * | 2020-04-24 | 2020-08-04 | 深圳麦克维尔空调有限公司 | Air conditioning system and control method thereof |
| CN113154722A (en) * | 2020-12-15 | 2021-07-23 | 国网辽宁省电力有限公司 | Air source heat pump system with refrigerant amount self-adaptive adjustment and control method |
| CN116255762A (en) * | 2023-04-23 | 2023-06-13 | 珠海格力电器股份有限公司 | Refrigerant quantity adjusting method and device, electronic equipment and storage medium |
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| CN105987537B (en) | 2018-11-06 |
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Granted publication date: 20181106 Termination date: 20210205 |