CN104807229A - Multi-split air conditioner and control method thereof - Google Patents

Multi-split air conditioner and control method thereof Download PDF

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Publication number
CN104807229A
CN104807229A CN201510206194.5A CN201510206194A CN104807229A CN 104807229 A CN104807229 A CN 104807229A CN 201510206194 A CN201510206194 A CN 201510206194A CN 104807229 A CN104807229 A CN 104807229A
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CN
China
Prior art keywords
outlet
entrance
heat exchanger
indoor
outdoor heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510206194.5A
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Chinese (zh)
Inventor
卜其辉
许永锋
梁伯启
张光鹏
李宏伟
蒋运鹏
吴晓鸿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea HVAC Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201510206194.5A priority Critical patent/CN104807229A/en
Publication of CN104807229A publication Critical patent/CN104807229A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B5/00Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • F25B41/34Expansion valves with the valve member being actuated by electric means, e.g. by piezo-electric actuators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plant or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/20Heat-exchange fluid temperature
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention belongs to the technical field of a multi-split air conditioner, and discloses a multi-split air conditioner and a control method thereof. A compressor is respectively communicated with an inlet of an outdoor heat exchanger and an outlet of a gas-liquid separator; an indoor evaporation unit is arranged between an outlet of the outdoor heat exchanger and an inlet of the gas-liquid separator; the outlet of the outdoor heat exchanger and the inlet of the gas-liquid separator are communicated through a second throttling component; the indoor evaporation unit comprises a plurality of groups of indoor evaporators in parallel connection, and an inlet temperature sensing bag and an outlet temperature sensing bag are respectively arranged on a branch at which each indoor evaporator is located. The coolant temperature at the outlet and the inlet of the indoor evaporator is detected, and the overheat degree is obtained through calculation and is compared with a set value, so the opening degree of the second throttling component is regulated according to the result, and the goal of regulating the total quantity of the coolant entering the indoor evaporation unit is achieved, and the frequent starting and stopping of an outdoor unit is avoided, the use comfort degree of a user is improved, and the stability of an air conditioner system is ensured.

Description

A kind of multi-gang air-conditioner and control method
Technical field
The present invention relates to combined air conditioners technical field, particularly the multi-gang air-conditioner that runs of a kind of Smaller load and control method.
Background technology
Along with the development of multi-connected machine technology, in order to improve user's comfort, multi-connected machine piping length is more and more longer, indoor set number of units gets more and more, require that a number of off-premises station is also increasing, the discharge capacity of the compressor of off-premises station coupling is also increasing, for multiple on-line system, general use frequency-changeable compressor, but frequency-changeable compressor has a minimum operation frequency, when system is in low temperature Smaller load refrigeration, even if compressor operating low-limit frequency, for huge discharge compressor, ability export or bigger than normal, low pressure will be caused on the low side, evaporating temperature is lower than 0 degree, in order to prevent indoor set from freezing, general way increases the protection of indoor set anti-freeze, namely when evaporating temperature is lower, stops the external equipment such as compressor, outdoor heat exchanger, make outer machine be in holding state, when temperature to be evaporated raises, restart outer machine.But this way will cause outer machine frequent start-stop, has a strong impact on user's comfort, cause system oil drain quantity to increase, oil return difficulty, influential system reliability simultaneously.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is: for the compressor displacement solved when multi-link air-conditioning is comparatively large, when air-conditioning system Smaller load runs, outer machine needs frequent start-stop, affects user's comfort, the problem of influential system reliability.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of multi-gang air-conditioner, comprise: compressor, outdoor heat exchanger and gas-liquid separator, the outlet of described compressor and entrance respectively with the entrance of described outdoor heat exchanger, the outlet of described gas-liquid separator, be connected with indoor evaporating unit between the outlet of described outdoor heat exchanger and the entrance of described gas-liquid separator; Described indoor evaporating unit comprises multiple indoor evaporator parallel with one another; Be provided with connecting pipeline between the outlet of described outdoor heat exchanger and the entrance of described gas-liquid separator, described connecting pipeline is provided with second section stream unit; The refrigerant total amount that described second section stream unit regulates described outdoor heat exchanger to flow out in the mode of backflow; The entrance pipe of each described indoor evaporator is provided with the entrance temperature-sensitive bag for detecting the refrigerant temperature entering described indoor evaporator, and the export pipeline of each described indoor evaporator is provided with the outlet temperature-sensitive bag for detecting the refrigerant temperature flowing out described indoor evaporator.
Wherein, first throttle parts are provided with between the outlet of described outdoor heat exchanger and the entrance of described indoor evaporating unit.
Wherein, the entrance of described second section stream unit and the outlet of described first throttle parts.
Wherein, the entrance pipe of each described indoor evaporator is equipped with the 3rd throttle part.
Wherein, described first throttle parts, second section stream unit, the 3rd throttle part are electric expansion valve.
Wherein, the outlet of described compressor is communicated with by cross valve with the entrance of outdoor heat exchanger, and the entrance of described gas-liquid separator is also communicated with by this cross valve with the outlet of described indoor evaporating unit.
Wherein, the pipeline connecting described indoor evaporating unit two ends is equipped with stop valve.
Wherein, described outdoor heat exchanger is air cooling heat exchanger, and described air cooling heat exchanger is connected with blower fan.
Based on the control method of above-mentioned multi-gang air-conditioner, comprise the following steps:
S1: the value detecting T1 and T2, wherein, T1 is the refrigerant temperature that described entrance temperature-sensitive bag detects, T2 is the refrigerant temperature that described outlet temperature-sensitive bag detects;
S2: the size comparing T2-T1 and preset calibrations value t, if T2-T1<t, increases the aperture of described second section stream unit, and performs step S1; If T2-T1>t, reduce the aperture of described second section stream unit, and perform step S1; If T2-T1=t, directly perform step S1.
(3) beneficial effect
Technique scheme tool has the following advantages: the multi-gang air-conditioner that a kind of Smaller load of the present invention runs and control method, and by arranging second section stream unit, the mode achieving to reflux regulates the object of the refrigerant total amount entering indoor evaporating unit; By the setup of entrances and exits temperature-sensitive bag in each indoor evaporator, the degree of superheat of each indoor evaporator can be detected, the degree of superheat calculated and setting value are compared, then regulate the aperture of second section stream unit, make the degree of superheat of indoor evaporator keep stable.
Accompanying drawing explanation
Fig. 1 is the structural representation of multi-gang air-conditioner of the present invention;
Fig. 2 is the flow chart of multi-gang air-conditioner control method of the present invention.
Wherein, 1, compressor; 2, cross valve; 3, blower fan; 4, outdoor heat exchanger; 5, first throttle parts; 6, second section stream unit; 7, gas-liquid separator; 8, stop valve; 9, the 3rd throttle part; 10, entrance temperature-sensitive bag; 11, indoor evaporator; 12, temperature-sensitive bag is exported.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
In describing the invention, it should be noted that, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, also it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, visual concrete condition understands above-mentioned term concrete meaning in the present invention.
As shown in Figure 1, the present invention discloses a kind of multi-gang air-conditioner, particularly a kind of multi-gang air-conditioner of Smaller load operation, it comprises: compressor 1, outdoor heat exchanger 4 and gas-liquid separator 7, the outlet of described compressor 1 and entrance respectively with the entrance of described outdoor heat exchanger 4, the outlet of described gas-liquid separator 7, be connected with indoor evaporating unit between the outlet of described outdoor heat exchanger 4 and the entrance of described gas-liquid separator 7; Described indoor evaporating unit comprises multiple indoor evaporator 11 parallel with one another; Be provided with connecting pipeline between the outlet of described outdoor heat exchanger 4 and the entrance of described gas-liquid separator 7, described connecting pipeline is provided with second section stream unit 6; The refrigerant total amount that described second section stream unit 6 regulates described outdoor heat exchanger 4 to flow out in the mode of backflow; The entrance pipe of each described indoor evaporator 11 is provided with the entrance temperature-sensitive bag 10 for detecting the refrigerant temperature entering described indoor evaporator 11, and the export pipeline of each described indoor evaporator 11 is provided with the outlet temperature-sensitive bag 12 for detecting the refrigerant temperature flowing out described indoor evaporator 11.By the aperture of adjustment second section stream unit 6, part refrigerant is made to get back in compressor 1, the adjustment to the refrigerant total amount entering indoor evaporating unit is realized in the mode of backflow, ensure the normal operation of each indoor evaporator 11, outer machine need not be stopped to run, ensure the stable operation of user's comfort and system.
Further, first throttle parts 5 are provided with between the outlet of described outdoor heat exchanger 4 and the entrance of described indoor evaporating unit.The entrance of described second section stream unit 6 and the outlet of described first throttle parts 5.To control total discharge of refrigerant.
The entrance pipe of each described indoor evaporator 11 is equipped with the 3rd throttle part 9.The cold medium flux of each branch road can be regulated, meet the different refrigerant demands of each branch road.
Concrete, described first throttle parts 5, second section stream unit 6, the 3rd throttle part 9 are electric expansion valve, to facilitate centralized Control.
Further, the outlet of described compressor 1 is communicated with by cross valve 2 with the entrance of outdoor heat exchanger 4, and the entrance of described gas-liquid separator 7 is also communicated with by this cross valve 2 with the outlet of described indoor evaporating unit.By switching the power on/off state of this cross valve 2, the outlet of compressor 1 and the outlet of indoor evaporating unit can be realized, the entrance of outdoor heat exchanger 4 is communicated with the entrance of gas-liquid separator 7 simultaneously, to realize the switching of outdoor refrigeration and heat-production functions, realizes the object of defrosting.
The pipeline connecting described indoor evaporating unit two ends is equipped with stop valve 8.Cut off coolant path during convenient for maintaining, or control the flow of refrigerant.
Preferably, described outdoor heat exchanger 4 is air cooling heat exchanger, and described air cooling heat exchanger is connected with blower fan 3.
The operation principle of above-mentioned multi-gang air-conditioner is as follows:
The refrigerant that compressor 1 exports arrives outdoor heat exchanger 4 through cross valve 2, enters each indoor evaporating unit after release heat through first throttle parts 5, stop valve 8; Refrigerant successively through the 3rd throttle part 9, entrance temperature-sensitive bag 10, indoor evaporator 11 and outlet temperature-sensitive bag 12, is then got back in compressor 1 through stop valve 8, cross valve 2, gas-liquid separator 7 in indoor evaporating unit.By adjusting two stop valves 8, the refrigerant total amount entering indoor evaporating unit and flow out indoor evaporating unit can be controlled, also can cut off refrigerant loop when needed.By the aperture of adjustment first throttle parts 5, the refrigerant output quantity of whole system can be controlled; By the aperture of adjustment second section stream unit 6, the coolant quantity being back to gas-liquid separator 7 can be adjusted, realize the object controlling to enter indoor evaporating unit refrigerant total amount; By adjusting the aperture of the 3rd throttle part 9, the coolant quantity entering each indoor evaporator 11 can be regulated, meeting the demand of different branch to refrigerant.
Based on the control method of above-mentioned multi-gang air-conditioner, control method when especially system is run under Smaller load state, as shown in Figure 2;
S1: the value detecting T1 and T2, wherein, T1 is the refrigerant temperature that described entrance temperature-sensitive bag 10 detects, T2 is the refrigerant temperature that described outlet temperature-sensitive bag 12 detects;
S2: the size comparing T2-T1 and preset calibrations value t, if T2-T1<t, increases the aperture of described second section stream unit 6, and performs step S1; If T2-T1>t, reduce the aperture of described second section stream unit 6, and perform step S1; If T2-T1=t, directly perform step S1.
Specifically, first in conjunction with the operating mode residing for concrete indoor evaporator 11, preset calibrations value t is set; When this air-conditioning system is in positive carry, second section stream unit 6 gives tacit consent to closedown, is only regulated by first throttle parts 5 and the 3rd throttle part 9; Only have when the 3rd throttle part 9 of certain indoor evaporator 11 correspondence has closed minimum aperture, when the degree of superheat is still little, just opens second section stream unit 6 and carry out bypass-unloading.
When this air-conditioning system is in load, measure refrigerant temperature T1, the T2 in this indoor evaporator 11 entrance and exit, deduct with outlet temperature T2 the degree of superheat that namely inlet temperature T1 obtains this indoor evaporator 11 correspondence, the degree of superheat calculated and preset calibrations value t made comparisons:
If I T2-T1<t, illustrate by the refrigerant circulation of indoor evaporator 11 on the high side, need to reduce refrigerant input quantity; Then increase the aperture of described second section stream unit 6, increase refrigerant return amount, the refrigerant total amount entering indoor evaporating unit is reduced; And then detect the value of T1, T2, recalculate, contrast;
If II T2-T1>t, illustrate by the refrigerant circulation of indoor evaporator 11 on the low side, need to increase refrigerant input quantity; Then reduce the aperture of described second section stream unit 6, reduce refrigerant return amount, the refrigerant total amount entering indoor evaporating unit is increased; And then detect the value of T1, T2, recalculate, contrast;
If III T2-T1=t, illustrating without the need to regulating refrigerant input quantity, again detecting the value of T1, T2, recalculating, contrasting.
Further, said method is a generally method, or is only carry out regulating for operating mode when only having an indoor evaporator 11 to be in opening in indoor evaporating unit.For the operating mode having multiple indoor evaporator 11 to open simultaneously, the adjustment of second section stream unit 6 aperture controls by the mean value of the degree of superheat of the indoor evaporator 11 of all unlatchings.Be about to point sometime, in indoor evaporating unit, the refrigerant temperature of the gateway of all indoor evaporator 11 of having opened is poor, obtain the degree of superheat of each indoor evaporator 11 correspondence, then all degrees of superheat are averaged, this mean value and preset value t are compared, then determines the aperture how regulating second section stream unit 6.
Be the control principle of this control method as mentioned above, the value of t is generally determined as the case may be, and such as t gets 3, then when the value calculating (T2-T1) be greater than 3, be less than 3, equal 3 time, take different actions to regulate respectively.
As can be seen from the above embodiments, the present invention is connected second section stream unit 6 by adopting between the entrance and the entrance of gas-liquid separator 7 of indoor evaporating unit, and the mode achieving to reflux regulates the object of the refrigerant total amount entering indoor evaporating unit; By arranging temperature-sensitive bag in the entry and exit of each indoor evaporator 11, i.e. temperature sensor, the degree of superheat of each indoor evaporator 11 can be calculated, the preset calibrations value t of the degree of superheat calculated with corresponding indoor evaporator 11 is compared, then the aperture of second section stream unit 6 is regulated, make the degree of superheat of indoor evaporator 11 keep stable, maintain a suitable interval; By the aperture of adjustment second section stream unit 6, low pressure can be improved, the evaporating temperature of indoor evaporator 11 is improved, effectively prevent indoor evaporator 11 from occurring the phenomenon freezed, solve huge discharge compressor simultaneously and export excessive problem under Smaller load runs, avoid system frequent start-stop, improve system reliability.First throttle parts 5, the 3rd throttle part 9 the effect can playing auxiliary adjustment is set; Two stop valves 8 at indoor evaporating unit gateway place can realize the control to whole loop refrigerant total amount; The setting of cross valve 2, achieves the switching to a whole set of air-conditioning system duty, also can realize defrost function.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.

Claims (9)

1. a multi-gang air-conditioner, it is characterized in that, comprise: compressor (1), outdoor heat exchanger (4) and gas-liquid separator (7), the outlet of described compressor (1) and entrance respectively with the outlet of the entrance of described outdoor heat exchanger (4), described gas-liquid separator (7), be connected with indoor evaporating unit between the outlet of described outdoor heat exchanger (4) and the entrance of described gas-liquid separator (7); Described indoor evaporating unit comprises multiple indoor evaporator parallel with one another (11);
Be provided with connecting pipeline between the outlet of described outdoor heat exchanger (4) and the entrance of described gas-liquid separator (7), described connecting pipeline is provided with second section stream unit (6); The refrigerant total amount that described second section stream unit (6) regulates described outdoor heat exchanger (4) to flow out in the mode refluxed;
The entrance pipe of each described indoor evaporator (11) is provided with for detecting the entrance temperature-sensitive bag (10) entering the refrigerant temperature of described indoor evaporator (11), and the export pipeline of each described indoor evaporator (11) is provided with the outlet temperature-sensitive bag (12) for detecting the refrigerant temperature flowing out described indoor evaporator (11).
2. multi-gang air-conditioner as claimed in claim 1, is characterized in that, be provided with first throttle parts (5) between the outlet of described outdoor heat exchanger (4) and the entrance of described indoor evaporating unit.
3. multi-gang air-conditioner as claimed in claim 2, is characterized in that, the entrance of described second section stream unit (6) and the outlet of described first throttle parts (5).
4. multi-gang air-conditioner as claimed in claim 3, is characterized in that, the entrance pipe of each described indoor evaporator (11) is equipped with the 3rd throttle part (9).
5. multi-gang air-conditioner as claimed in claim 4, it is characterized in that, described first throttle parts (5), second section stream unit (6), the 3rd throttle part (9) are electric expansion valve.
6. multi-gang air-conditioner as claimed in claim 1, it is characterized in that, the outlet of described compressor (1) is communicated with by cross valve (2) with the entrance of outdoor heat exchanger (4), and the entrance of described gas-liquid separator (7) and the outlet of described indoor evaporating unit are also communicated with by this cross valve (2).
7. multi-gang air-conditioner as claimed in claim 1, is characterized in that, the pipeline connecting described indoor evaporating unit two ends is equipped with stop valve (8).
8. multi-gang air-conditioner as claimed in claim 1, it is characterized in that, described outdoor heat exchanger (4) is air cooling heat exchanger, and described air cooling heat exchanger is connected with blower fan (3).
9., based on the control method of multi-gang air-conditioner described in any one of claim 1-8, it is characterized in that, comprise the following steps:
S1: the value detecting T1 and T2, wherein, T1 is the refrigerant temperature that described entrance temperature-sensitive bag (10) detects, T2 is the refrigerant temperature that described outlet temperature-sensitive bag (12) detects;
S2: the size comparing T2-T1 and preset calibrations value t, if T2-T1<t, increases the aperture of described second section stream unit (6), and performs step S1; If T2-T1>t, reduce the aperture of described second section stream unit (6), and perform step S1; If T2-T1=t, directly perform step S1.
CN201510206194.5A 2015-04-27 2015-04-27 Multi-split air conditioner and control method thereof Pending CN104807229A (en)

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CN105588281A (en) * 2015-12-25 2016-05-18 珠海格力电器股份有限公司 Fluorine deficiency control method for reheating mode of reheating and dehumidification multi-split air conditioner system
CN105864981A (en) * 2016-04-26 2016-08-17 海信(山东)空调有限公司 Adjusting method and system for multi-split air conditioner
CN106196524A (en) * 2016-08-01 2016-12-07 珠海格力电器股份有限公司 Control device, control method and the air-conditioning of a kind of air-conditioning anti-freeze
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CN107238161A (en) * 2017-07-25 2017-10-10 广东美的暖通设备有限公司 Multiple on-line system and its mode switch control method
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CN108716784A (en) * 2018-06-07 2018-10-30 广东美的暖通设备有限公司 Multi-line system and its control method
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CN109000344A (en) * 2018-06-19 2018-12-14 广东美的制冷设备有限公司 Control method, the device and system of air conditioner cooling capacity output
CN109532388A (en) * 2018-11-26 2019-03-29 朱士政 A kind of vehicle-mounted refrigerator central control system of new energy
CN110411082A (en) * 2019-07-23 2019-11-05 珠海格力电器股份有限公司 Refrigerant recovery system and its control method, device, controller and air-conditioning system
CN110715414A (en) * 2019-10-16 2020-01-21 广东美的制冷设备有限公司 Air conditioner and control method and control system thereof
CN111637526A (en) * 2020-05-30 2020-09-08 广东志高暖通设备股份有限公司 Control method of mixed and collocated multi-split system
CN111750486A (en) * 2020-06-17 2020-10-09 宁波奥克斯电气股份有限公司 Control method and device for preventing internal machine from freezing and air conditioner
CN112066525A (en) * 2020-08-13 2020-12-11 珠海格力电器股份有限公司 Multi-split air conditioner control method and device, multi-split air conditioner, storage medium and processor

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CN105157171A (en) * 2015-08-28 2015-12-16 珠海格力电器股份有限公司 Control method and control system of air conditioning system
CN105157171B (en) * 2015-08-28 2018-01-02 珠海格力电器股份有限公司 The control method and control system of air-conditioning system
CN105588281A (en) * 2015-12-25 2016-05-18 珠海格力电器股份有限公司 Fluorine deficiency control method for reheating mode of reheating and dehumidification multi-split air conditioner system
CN105588281B (en) * 2015-12-25 2018-09-18 珠海格力电器股份有限公司 Heat pattern owes fluorine control method again for a kind of reheat dehumidification multi-line system
CN105864981A (en) * 2016-04-26 2016-08-17 海信(山东)空调有限公司 Adjusting method and system for multi-split air conditioner
CN106196524A (en) * 2016-08-01 2016-12-07 珠海格力电器股份有限公司 Control device, control method and the air-conditioning of a kind of air-conditioning anti-freeze
CN106196524B (en) * 2016-08-01 2019-04-02 珠海格力电器股份有限公司 A kind of control device, control method and the air-conditioning of air-conditioning anti-freeze
CN106765524B (en) * 2016-12-16 2020-04-14 广东美的暖通设备有限公司 Outer unit control system, heat pump unit and control method thereof
CN106765524A (en) * 2016-12-16 2017-05-31 广东美的暖通设备有限公司 Outer machine control system, source pump and its control method
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CN106931672A (en) * 2017-03-06 2017-07-07 广东美的暖通设备有限公司 Air-conditioning evaporating pressure regulating system, adjusting method and air-conditioning system
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CN107588573B (en) * 2017-09-04 2019-12-27 广东美的暖通设备有限公司 Air conditioner, compressor protection method, computer device, and readable storage medium
CN107975916A (en) * 2017-11-13 2018-05-01 珠海格力电器股份有限公司 Air conditioner system control method, apparatus and system
CN107975916B (en) * 2017-11-13 2019-05-24 珠海格力电器股份有限公司 Air conditioner system control method, apparatus and system
CN108716784B (en) * 2018-06-07 2021-06-18 广东美的暖通设备有限公司 Multi-split system and control method thereof
CN108716784A (en) * 2018-06-07 2018-10-30 广东美的暖通设备有限公司 Multi-line system and its control method
CN109000344A (en) * 2018-06-19 2018-12-14 广东美的制冷设备有限公司 Control method, the device and system of air conditioner cooling capacity output
CN108758976B (en) * 2018-06-19 2021-03-19 广东美的制冷设备有限公司 Control method and device of air conditioner and air conditioner with control device
CN108758976A (en) * 2018-06-19 2018-11-06 广东美的制冷设备有限公司 Control method, device and the air-conditioning with it of air-conditioning
CN108826556A (en) * 2018-08-22 2018-11-16 Tcl空调器(中山)有限公司 Air-conditioning system, the control method of air-conditioning system and computer readable storage medium
CN109532388A (en) * 2018-11-26 2019-03-29 朱士政 A kind of vehicle-mounted refrigerator central control system of new energy
CN110411082A (en) * 2019-07-23 2019-11-05 珠海格力电器股份有限公司 Refrigerant recovery system and its control method, device, controller and air-conditioning system
CN110715414A (en) * 2019-10-16 2020-01-21 广东美的制冷设备有限公司 Air conditioner and control method and control system thereof
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CN111750486A (en) * 2020-06-17 2020-10-09 宁波奥克斯电气股份有限公司 Control method and device for preventing internal machine from freezing and air conditioner
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Application publication date: 20150729