CN102759147A - Air-conditioning multiple on-line system - Google Patents

Air-conditioning multiple on-line system Download PDF

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Publication number
CN102759147A
CN102759147A CN2012102263784A CN201210226378A CN102759147A CN 102759147 A CN102759147 A CN 102759147A CN 2012102263784 A CN2012102263784 A CN 2012102263784A CN 201210226378 A CN201210226378 A CN 201210226378A CN 102759147 A CN102759147 A CN 102759147A
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China
Prior art keywords
heat exchanger
outdoor
valve
cross valve
main
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CN2012102263784A
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CN102759147B (en
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黄钊
邓建云
占磊
刘纯
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Guangdong Midea HVAC Equipment Co Ltd
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Guangdong Midea Electric Appliances Co Ltd
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    • 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 discloses an air-conditioning multiple on-line system, which comprises a compressor, a main four-way valve, an outdoor main heat exchanger, an outdoor electronic expansion valve, a high-pressure liquid storage tank, an indoor electronic expansion valve, an indoor heat exchanger and a low-pressure liquid storage tank, wherein one end of the compressor is connected with a first joint of the main four-way valve; a second joint of the main four-way valve is connected with one end of the outdoor main heat exchanger; the other end of the outdoor main heat exchanger is connected with one end of the high-pressure liquid storage tank through the outdoor electronic expansion valve; a first joint of an auxiliary four-way valve is connected between one end of the compressor and the first joint of the main four-way valve; a second joint of the auxiliary four-way valve sequentially penetrates through an outdoor auxiliary heat exchanger and a second capillary and is connected between the other end of the outdoor main heat exchanger and the outdoor electronic expansion valve; and a third joint of the auxiliary four-way valve sequentially penetrates through a one-way valve and is connected between the other ends of a plurality of parallel indoor heat exchangers and a fourth joint of the main four-way valve. The air-conditioning multiple on-line system has the advantages of simple and reasonable structure, flexibility in operation and wide application range.

Description

The many on-line systems of air-conditioner
Technical field
The present invention relates to a kind of air-conditioner, the many on-line systems of particularly a kind of air-conditioner.
Background technology
The many on-line systems of traditional air-conditioner; Shown in accompanying drawing 1; Critical piece comprises compressor 1, cross valve 4, outdoor condenser 5, outdoor electric expansion valve 10, high pressure fluid reservoir 11, indoor electric expansion valve 12 and indoor heat converter 13 and low-pressure liquid storing tank 16, and the many on-line systems of this air-conditioner can realize refrigeration, heat isotype.But, when the many on-line systems of such air-conditioner when coupling has many small-sized indoor sets, at small-sized indoor set of isolated operation; Heat exchange area between outdoor condenser and this small-sized indoor set differs bigger; Cause little load refrigeration easily or when heating, the high frequent start and stop, and the lubricating oil in the system is difficult for taking back compressor; Do not cause the reliability of compressor high and the room temperature fluctuation is bigger simultaneously, comfortableness is relatively poor.
Chinese patent document number CN102297494A discloses the method and system of a kind of how online refrigeration underload stable operation on December 28th, 2011; It is characterized in that at first outdoor heat exchanger being divided into two parts by an integral body; Control a heat exchanger respectively with two cross valves, when system loading hour, the cross valve through correspondence wherein one piece of heat exchanger is closed; In case locking system the load hour, hypotony; Secondly for each outdoor heat exchanger the dc brushless motor fan component is installed; Mainly solve under refrigeration mode especially hour stability of a system problem of cryogenic refrigeration indoor load; At this moment; Cross valve A9 capable of using of system and check valve make up and constitute the effect of outdoor heat exchanger B 10 break-makes that lets, thereby select the outdoor heat exchanger size of participation condensation to come balance cylinder's internal loading problem of smaller.
Summary of the invention
The object of the invention aims to provide a kind of simple and reasonable, flexible operation, many on-line systems of air-conditioner applied widely, to overcome weak point of the prior art.
The many on-line systems of a kind of air-conditioner by this purpose design; Comprise compressor, main cross valve, outdoor main heat exchanger, outdoor electric expansion valve, high pressure fluid reservoir, indoor electric expansion valve and indoor heat exchanger and low-pressure liquid storing tank; Wherein, One end of compressor and first interface of main cross valve join; Second interface of main cross valve and an end of outdoor main heat exchanger join; End with the high pressure fluid reservoir behind the outdoor electric expansion valve of other end process of outdoor main heat exchanger joins; The other end of high pressure fluid reservoir joins with an end of a plurality of parallelly connected indoor heat exchangers, and the 4th interface of the other end of the indoor heat exchanger of these a plurality of parallel connections and main cross valve joins, and is serially connected with indoor electric expansion valve between the other end of each indoor heat exchanger and high pressure fluid reservoir; The 3rd interface of main cross valve and an end of low-pressure liquid storing tank join; The other end of low-pressure liquid storing tank and the other end of compressor join, and its architectural feature is also to comprise first capillary, auxiliary cross valve, outdoor supplementary heat exchanger and second capillary and check valve, wherein; Between one end of first interface access compressor of auxiliary cross valve and first interface of main cross valve; Second interface of auxiliary cross valve is successively through inserting between the other end and outdoor electric expansion valve of outdoor main heat exchanger after the outdoor supplementary heat exchanger and second capillary, and between the 4th interface of the 3rd interface of auxiliary cross valve through the other end of the indoor heat exchanger that inserts a plurality of parallel connections after the check valve and main cross valve, the 4th interface of auxiliary cross valve is assisted between the 3rd interface and check valve of cross valve through access after first capillary.
The many on-line systems of air-conditioner also comprise the three capillary and first magnetic valve; Three capillary is gone between an outdoor supplementary heat exchanger and second end capillaceous with the termination after first magnetic valve is connected in series, and three capillary inserts between the other end of outdoor main heat exchanger, outdoor electric expansion valve, second other end three capillaceous with the other end after first magnetic valve is connected in series.
The many on-line systems of air-conditioner also comprise second magnetic valve, and a termination of this second magnetic valve goes into to assist between second interface and outdoor supplementary heat exchanger of cross valve, and the other end of second magnetic valve inserts between the 3rd interface and low-pressure liquid storing tank of main cross valve.
Said outdoor supplementary heat exchanger is arranged on the side of outdoor main heat exchanger; Perhaps, outdoor supplementary heat exchanger is arranged on the next door of outdoor main heat exchanger.
Outdoor supplementary heat exchanger among the present invention both can be the part of outdoor main heat exchanger, also can be fully independently one; When refrigeration; If need the low power indoor set of operation; Outdoor supplementary heat exchanger capable of using serves as evaporimeter with low power indoor set to be used, when heating, if need the low power indoor set of operation; Outdoor supplementary heat exchanger capable of using serves as condenser with low power indoor set to be used, in order to the size of the ability to work of balancing evaporator, condenser; When refrigeration; If the power or the quantity of the indoor set that need move are many; Outdoor supplementary heat exchanger also capable of using serves as condenser with outdoor main heat exchanger to be used; When heating, if the power or the quantity of the indoor set that need move are many, outdoor supplementary heat exchanger also capable of using serves as evaporimeter with outdoor main heat exchanger to be used; So; Outdoor supplementary heat exchanger can play the power of balance sysmte evaporimeter and condenser or the effect of quantity; Therefore can solve the deficiency of traditional many on-line system designs, can realize that powerful off-premises station can mate more low power indoor set and the wider characteristics of indoor and outdoor matching range.
The present invention can solve that the high frequent start and stop cause the compressor reliability problem when little load operation; And the room temperature fluctuation causes comfortableness problem more greatly; Simultaneously outdoor supplementary heat exchanger also capable of using serves as evaporimeter (when heating operation) or condenser (when refrigerating operaton) matees more indoor sets, and it has simple and reasonable, flexible operation, dependable performance, advantage of wide range of application.
Description of drawings
Fig. 1 is the sketch map of traditional many on-line systems of air-conditioner.
Fig. 2 is the first embodiment of the invention structural representation.
Fig. 3 is the second embodiment of the invention structural representation.
Fig. 4 is the third embodiment of the invention structural representation.
Among the figure: 1 is compressor, and 2 is first capillary, and 3 are auxiliary cross valve, and 4 is main cross valve; 5 is outdoor main heat exchanger, and 6 is outdoor supplementary heat exchanger, and 7 is second capillary, and 8 is three capillary; 9 is first magnetic valve, and 10 is outdoor electric expansion valve, and 11 is the high pressure fluid reservoir, and 12 is indoor electric expansion valve; 13 is indoor heat exchanger, and 14 is second magnetic valve, and 15 is check valve, and 16 is low-pressure liquid storing tank.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
First embodiment
Referring to Fig. 2; The many on-line systems of this air-conditioner; Comprise compressor 1, main cross valve 4, outdoor main heat exchanger 5, outdoor electric expansion valve 10, high pressure fluid reservoir 11, indoor electric expansion valve 12 and indoor heat exchanger 13 and low-pressure liquid storing tank 16; Wherein, The first interface a of one end of compressor 1 and main cross valve 4 joins; A second interface b of main cross valve 4 and an end of outdoor main heat exchanger 5 join; The other end of outdoor main heat exchanger 5 joins through the end of outdoor electric expansion valve 10 backs with high pressure fluid reservoir 11; The other end of high pressure fluid reservoir 11 joins with an end of a plurality of parallelly connected indoor heat exchangers 13, and the 4th interface d of the other end of the indoor heat exchanger 13 of these a plurality of parallel connections and main cross valve 4 joins, and is serially connected with indoor electric expansion valve 12 between the other end of each indoor heat exchanger 13 and high pressure fluid reservoir 11; The 3rd an interface c of main cross valve 4 and an end of low-pressure liquid storing tank 16 join; The other end of the other end of low-pressure liquid storing tank 16 and compressor 1 joins, and also comprises first capillary 2, auxiliary cross valve 3, outdoor supplementary heat exchanger 6 and second capillary 7 and check valve 15, wherein; Between one end of the first interface e access compressor 1 of auxiliary cross valve 3 and the first interface a of main cross valve 4; The second interface f of auxiliary cross valve 3 is successively through inserting between the other end and outdoor electric expansion valve 10 of outdoor main heat exchanger 5 after the outdoor supplementary heat exchanger 6 and second capillary 7, and between the 4th interface d of the 3rd interface g of auxiliary cross valve 3 through the other end of the indoor heat exchanger 13 that inserts a plurality of parallel connections after the check valve 15 and main cross valve 4, the 4th interface h of auxiliary cross valve 3 assists between the 3rd interface g and check valve 15 of cross valve 3 through access after first capillary 2.
The many on-line systems of air-conditioner also comprise the three capillary 8 and first magnetic valve 9; Three capillary 8 is gone between the end of the outdoor supplementary heat exchanger 6 and second capillary 7 with the termination after first magnetic valve 9 is connected in series, and three capillary 8 inserts between the other end three of the other end of outdoor main heat exchanger 5, outdoor electric expansion valve 10, second capillary 7 with the other end after first magnetic valve 9 is connected in series.
The many on-line systems of air-conditioner also comprise second magnetic valve 14; One termination of this second magnetic valve 14 goes into to assist between the second interface f and outdoor supplementary heat exchanger 6 of cross valve 3, and the other end of second magnetic valve 14 inserts between the 3rd interface c and low-pressure liquid storing tank 16 of main cross valve 4.
Certainly, also available two magnetic valve parallel connections of above-mentioned auxiliary cross valve or three-way diverter valve replace, and also can obtain essentially identical technique effect.
Outdoor supplementary heat exchanger 6 both can be under refrigeration mode and 5 parallel connections of outdoor main heat exchanger constitute a bigger condenser and play condensation, also can play evaporation by bigger evaporimeter of parallelly connected formation with indoor heat exchanger.Otherwise heating mode is next.
The first above-mentioned capillary, second capillary, all available other restricting element of three capillary substitute, and can obtain essentially identical technique effect.
In the present embodiment, outdoor supplementary heat exchanger 6 and outdoor main heat exchanger 5 one, outdoor supplementary heat exchanger 6 is arranged on the side of outdoor main heat exchanger 5, and outdoor supplementary heat exchanger 6 all adopts air-cooled refrigeration with outdoor main heat exchanger 5.
When refrigerating operaton; When the power of the indoor set of needs operations or outnumber when preset; Then outdoor supplementary heat exchanger 6 is used as condenser; Parallelly connected with outdoor main heat exchanger second capillary does not play the throttling hypotensive effect again through outdoor electric expansion valve 10 realization throttling hypotensive effects, and three capillary plays the refrigerant flow in the outer main heat exchanger of distributor chamber, the outdoor supplementary heat exchanger.
And when the power of the indoor set that needs operation or number more hour; Then outdoor supplementary heat exchanger 6 is used as evaporimeter; The condensed part of refrigerant of outdoor main heat exchanger is evaporated in the littler indoor set of power or number, another part in second capillary 7 after the throttling step-down in outdoor supplementary heat exchanger 6 evaporations; When heating operation; When the power of needs operations indoor set or outnumber when preset; Then outdoor supplementary heat exchanger 6 is as evaporimeter usefulness, and second capillary does not play the throttling hypotensive effect, and three capillary plays the effect of the refrigerant flow in the outer main heat exchanger of distributor chamber, the outdoor supplementary heat exchanger.The condensed cold-producing medium of indoor set behind the throttling hypotensive effect of off-premises station electric expansion valve 10 respectively outside the inlet chamber main heat exchanger, outdoor supplementary heat exchanger evaporate.And when needing the littler indoor set of operate power or number; Then outdoor supplementary heat exchanger 6 is used as condenser; 7 throttling hypotensive effects of second capillary; Afterwards again with indoor heat exchanger 13 in certain low power indoor set condensation parallelly connected after the throttling again, realize evaporation at outdoor main heat exchanger 5 at last.
Second magnetic valve is mainly machine-processed in moving more multicell just to let electric connection on it when hot, uses so that outdoor supplementary heat exchanger is participated in the evaporation of part cold-producing medium.
Below the concrete course of work of the many on-line systems of air-conditioner is described in detail.The left end of following main cross valve, the first interface a of just main cross valve 4; The upper end of main cross valve, the second interface b of just main cross valve 4; The right-hand member of main cross valve, the 3rd interface c of just main cross valve 4; The lower end of main cross valve, the 4th interface d of just main cross valve 4; The left end of auxiliary cross valve, the just first interface e of auxiliary cross valve 3; The upper end of auxiliary cross valve, the just second interface f of auxiliary cross valve 3; The right-hand member of auxiliary cross valve, just the 3rd interface g of auxiliary cross valve 3; The lower end of auxiliary cross valve, just the 4th interface h of auxiliary cross valve 3.
Under the refrigeration mode, when less or number is fewer when the indoor set power ratio of coupling operation, in order to satisfy the restriction of compressor minimum operation frequency, or the export-restriction of compressor.Need enough big evaporimeter could guarantee that compressor runs without interruption.At this moment, main cross valve 4 does not power on, and the left end of main cross valve is communicated with the upper end of main cross valve, and the right-hand member of main cross valve is communicated with the lower end of main cross valve; Auxiliary cross valve 3 powers on, and the left end of auxiliary cross valve is communicated with the lower end of auxiliary cross valve, and the right-hand member of main cross valve is communicated with the upper end of main cross valve, and magnetic valve 9 is in not power-up state with magnetic valve 14; Cold-producing medium is compressed into the upper end that left end that the HTHP overheated gas gets into main cross valve 4 arrives main cross valve again through compressor 1, in off-premises station main heat exchanger 5, carries out condensation.The liquid refrigerant of warm high pressure in condensed, a part is evaporated heat absorption through entering into indoor heat exchanger 13 after outdoor electric expansion valve 10 throttlings, enters into the lower end of main cross valve 4 afterwards; And behind second capillary-compensated in another part process capillary module; In outdoor supplementary heat exchanger 6, evaporate, the back gets into the upper end of auxiliary cross valve 3 again, from the right-hand member outflow of auxiliary cross valve; Enter into the lower end of main cross valve 4 after converging with the first cold-producing medium again; Cold-producing medium behind the interflow is got back to low-pressure liquid storing tank 16 from the right-hand member of main cross valve, gets back to compressor at last, accomplishes kind of refrigeration cycle.
Under the refrigeration mode, when big or number is many when the indoor set power ratio of coupling, need this moment bigger outdoor heat exchanger make condenser usefulness; At this moment; Main cross valve 4 does not power on, and the left end of main cross valve is communicated with the upper end of main cross valve, and the right-hand member of main cross valve is communicated with the lower end of main cross valve; Auxiliary cross valve 3 does not power on, and the left end of auxiliary cross valve is communicated with the upper end of auxiliary cross valve, and the right-hand member of auxiliary cross valve is communicated with the lower end of auxiliary cross valve, and magnetic valve 9 is in power-up state, and magnetic valve 14 is in not power-up state; Cold-producing medium process compressor 1 is compressed into the overheated gas and the separated into two parts of HTHP, and the left end of the main cross valve 4 of part entering arrives the upper end of the cross valve of main cross valve 4 again, in off-premises station main heat exchanger 5, carries out condensation.The liquid refrigerant of warm high pressure in becoming after the condensation; And another part overheated gas; In supplementary heat exchanger 6, carry out condensation again through the left end of auxiliary cross valve and the upper end of auxiliary cross valve; After passing through the magnetic valve and three capillary or other adjustable parts in the capillary module again, (at this moment, second capillary does not play the throttling hypotensive effect; Three capillary mainly plays the refrigerant flow in the outer main heat exchanger of distributor chamber, the outdoor supplementary heat exchanger) with outdoor main heat exchanger in after the liquid refrigerant of the middle temperature high pressure that comes out converges; Enter into indoor heat exchanger 13 after 10 throttlings of inlet chamber exoelectron expansion valve and evaporate heat absorption, enter into the lower end of main cross valve 4 afterwards, get back to low-pressure liquid storing tank 16 from the right-hand member of main cross valve; Get back to compressor at last, accomplish kind of refrigeration cycle.
Under the heating mode, when less or number is fewer when the indoor set power ratio of coupling operation, in order to satisfy the restriction of compressor minimum operation frequency, or the export-restriction of compressor.Need enough big condenser could guarantee that compressor runs without interruption.At this moment, main cross valve 4 powers on, and the left end of main cross valve is communicated with the lower end of main cross valve, and the right-hand member of main cross valve is communicated with the upper end of main cross valve; Auxiliary cross valve 3 does not power on, and the left end of auxiliary cross valve is communicated with the upper end of auxiliary cross valve, and auxiliary cross valve right-hand member is communicated with the lower end of auxiliary cross valve, and first magnetic valve 9 and second magnetic valve 14 are in not power-up state; Cold-producing medium process compressor 1 is compressed into the overheated gas and the separated into two parts of HTHP, and the left end of the main cross valve 4 of part entering arrives the lower end of main cross valve again, in indoor main heat exchanger 13, carries out the condensation heat release.The liquid refrigerant of warm high pressure in becoming after the condensation is through the gas-liquid two-phase cold-producing medium of outdoor electric expansion valve 10 throttling step-down Cheng Zhongwen low pressure; And another part overheated gas; In supplementary heat exchanger 6, carry out condensation again through the left end of auxiliary cross valve and the upper end of auxiliary cross valve; (this moment, second magnetic valve 9 was in the power down closed condition) throttling step-down after passing through second capillary in the capillary module again after the gas-liquid two-phase cold-producing medium of the middle temperature low pressure of coming with outdoor electric expansion valve 10 converges, enters into indoor heat exchanger 13 after 10 throttlings of inlet chamber exoelectron expansion valve and evaporates heat absorption; Enter into the lower end of main cross valve 4 afterwards; Get back to low-pressure liquid storing tank 16 from the right-hand member of main cross valve, get back to compressor at last, accomplish heating circulation.
Under the heating mode; When big or number was many when the indoor set power ratio of coupling, need make evaporimeter usefulness by bigger outdoor heat exchanger this moment, and main cross valve 4 powers on; The left end of main cross valve is communicated with the lower end of main cross valve, and the right-hand member of main cross valve is communicated with the upper end of main cross valve; Auxiliary cross valve 3 powers on, and the left end of auxiliary cross valve is communicated with the lower end of auxiliary cross valve, and the right-hand member of auxiliary cross valve is communicated with the upper end of auxiliary cross valve, and first magnetic valve 9 and second magnetic valve 14 are in power-up state; Cold-producing medium is compressed into the lower end that left end that the HTHP overheated gas gets into main cross valve 4 arrives main cross valve again through compressor 1, in indoor main heat exchanger 13, carries out condensation.The liquid refrigerant of warm high pressure in becoming after the condensation; Through the gas-liquid two-phase cold-producing medium of warm low pressure in becoming after the outdoor electronic throttle parts 10 throttling step-downs, after be divided into two parts, one one evaporates in outdoor main heat exchanger 5; Cold-producing medium after the evaporation enters into the upper end of main cross valve 4, and from the right-hand member outflow of main cross valve 4, another part through three capillary (at this moment earlier; Second capillary does not play the throttling hypotensive effect; Three capillary mainly plays refrigerant flow in the outer main heat exchanger of distributor chamber, the outdoor supplementary heat exchanger), in outdoor supplementary heat exchanger 6, evaporate then, the cold-producing medium after the evaporation is through second magnetic valve 14; Enter into the right-hand member of main cross valve 4; With from outdoor main heat exchanger 5, enter into low-pressure liquid storing tank 16 after the evaporation refrigerant mixed later, get back to compressor at last, accomplish heating circulation.
Second embodiment
Referring to Fig. 3, in the present embodiment, outdoor supplementary heat exchanger 6 is independent fully, and outdoor supplementary heat exchanger 6 is arranged on the next door of outdoor main heat exchanger 5.Outdoor supplementary heat exchanger 6 adopts the water-cooled refrigeration, and the 6a among Fig. 3 is second check valve, and 6b is cooling pond or cooling tower.
All the other are not stated part and see first embodiment, repeat no more.
The 3rd embodiment
Referring to Fig. 4, in the present embodiment, outdoor supplementary heat exchanger 6 is independent fully, and outdoor supplementary heat exchanger 6 is arranged on the next door of outdoor main heat exchanger 5.Outdoor supplementary heat exchanger 6 adopts air-cooled refrigeration.
All the other are not stated part and see first embodiment, repeat no more.
The application is not only limited to above-mentioned instance, and in the application's essential scope, any variation of being made, remodeling, increase are perhaps replaced, and also belong to the application's protection domain.

Claims (4)

1. many on-line systems of air-conditioner; Comprise compressor (1), main cross valve (4), outdoor main heat exchanger (5), outdoor electric expansion valve (10), high pressure fluid reservoir (11), indoor electric expansion valve (12) and indoor heat exchanger (13) and low-pressure liquid storing tank (16); Wherein, First interface (a) of one end of compressor (1) and main cross valve (4) joins; Second interface (b) of main cross valve (4) joins with an end of outdoor main heat exchanger (5); The other end of outdoor main heat exchanger (5) joins through the end of outdoor electric expansion valve (10) back with high pressure fluid reservoir (11); The other end of high pressure fluid reservoir (11) joins with an end of a plurality of parallelly connected indoor heat exchangers (13); The 4th interface (d) of the other end of the indoor heat exchanger of these a plurality of parallel connections (13) and main cross valve (4) joins; Be serially connected with indoor electric expansion valve (12) between the other end of each indoor heat exchanger (13) and high pressure fluid reservoir (11); The 3rd interface (c) of main cross valve (4) joins with an end of low-pressure liquid storing tank (16); The other end of the other end of low-pressure liquid storing tank (16) and compressor (1) joins; It is characterized in that also comprising first capillary (2), auxiliary cross valve (3), outdoor supplementary heat exchanger (6) and second capillary (7) and check valve (15); Wherein, between an end of first interface (e) of auxiliary cross valve (3) access compressor (1) and first interface (a) of main cross valve (4), second interface (f) of auxiliary cross valve (3) passes through outdoor supplementary heat exchanger (6) successively and second capillary (7) inserts between the other end and outdoor electric expansion valve (10) of outdoor main heat exchanger (5) afterwards; The 3rd interface (g) of auxiliary cross valve (3) inserts through check valve (15) between the 4th interface (d) of the other end and main cross valve (4) of indoor heat exchanger (13) of a plurality of parallel connections afterwards, and the 4th interface (h) of auxiliary cross valve (3) inserts between the 3rd interface (g) and check valve (15) of assisting cross valve (3) through first capillary (2) afterwards.
2. the many on-line systems of air-conditioner according to claim 1; It is characterized in that also comprising three capillary (8) and first magnetic valve (9); Three capillary (8) is gone between the end of outdoor supplementary heat exchanger (6) and second capillary (7) with the termination after first magnetic valve (9) is connected in series, and three capillary (8) inserts between the other end three of the other end of outdoor main heat exchanger (5), outdoor electric expansion valve (10), second capillary (7) with the other end after first magnetic valve (9) is connected in series.
3. the many on-line systems of air-conditioner according to claim 2; It is characterized in that also comprising second magnetic valve (14); One termination of this second magnetic valve (14) is gone between second interface (f) and outdoor supplementary heat exchanger (6) of auxiliary cross valve (3), and the other end of second magnetic valve (14) inserts between the 3rd interface (c) and low-pressure liquid storing tank (16) of main cross valve (4).
4. according to the many on-line systems of the arbitrary described air-conditioner of claim 1 to 3, it is characterized in that said outdoor supplementary heat exchanger (6) is arranged on the side of outdoor main heat exchanger (5); Perhaps, outdoor supplementary heat exchanger (6) is arranged on the next door of outdoor main heat exchanger (5).
CN201210226378.4A 2012-07-02 2012-07-02 Air-conditioning multiple on-line system Active CN102759147B (en)

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CN103836773A (en) * 2012-11-21 2014-06-04 美的集团股份有限公司 Multi-split air conditioning system and shutdown noise control method thereof
CN105509261A (en) * 2014-09-26 2016-04-20 美的集团武汉制冷设备有限公司 Air conditioner and control method for air conditioner
CN106052181A (en) * 2016-07-07 2016-10-26 广东美的暖通设备有限公司 Air conditioner system and control method thereof
CN106705515A (en) * 2016-12-23 2017-05-24 广东美的暖通设备有限公司 Air conditioner system and air conditioner
CN106766413A (en) * 2016-11-28 2017-05-31 镇江恒安防爆电器有限公司 A kind of energy-conservation, rapid frost melting heater
CN110529977A (en) * 2019-09-12 2019-12-03 宁波奥克斯电气股份有限公司 A kind of multi-connected unit control system, control method and air conditioner

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CN201373632Y (en) * 2009-02-07 2009-12-30 广东美的电器股份有限公司 Multi-connected air-conditioning system
CN102435026A (en) * 2011-11-11 2012-05-02 广东美的电器股份有限公司 Auxiliary device of multi-connected air conditioner heat pump system

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CN103836773B (en) * 2012-11-21 2016-08-17 美的集团股份有限公司 Multi-online air-conditioning system and shutdown noise control method thereof
CN105509261A (en) * 2014-09-26 2016-04-20 美的集团武汉制冷设备有限公司 Air conditioner and control method for air conditioner
CN105509261B (en) * 2014-09-26 2019-11-26 美的集团武汉制冷设备有限公司 The control method of air conditioner and air conditioner
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