CN104456731A - Multi-split air conditioner - Google Patents
Multi-split air conditioner Download PDFInfo
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- CN104456731A CN104456731A CN201410670262.9A CN201410670262A CN104456731A CN 104456731 A CN104456731 A CN 104456731A CN 201410670262 A CN201410670262 A CN 201410670262A CN 104456731 A CN104456731 A CN 104456731A
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- port
- heat exchanger
- premises station
- indoor heat
- cross valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a multi-split air conditioner. According to the multi-split air conditioner, different indoor units have different operation modes, and the multi-connection unit comprises N outdoor units and M indoor units connected with the N outdoor units through pipelines to form a refrigerant circulation loop. The spraying ends of compressors of all the outdoor units are connected with the third end openings of four-way valves through pipelines, the suction ends of the compressors are connected with the first end openings of the four-way valves through pipelines, and the gas side ends of outdoor heat exchangers are connected with the fourth end openings of the four-way valves through pipelines. The gas side ends of all indoor heat exchangers are connected with N branch circuits, control valves are arranged inside all the branch circuits, the i <th> branch circuit of each of the M indoor heat exchangers is connected with an i <th> gas collecting pipe, i is an integer between 1 and N, and each i <th> gas collecting pipe is connected with the second end opening of the four-way valve of the corresponding i <th> outdoor unit. The several gas collecting pipes can be combined according to actual conditions, and the piping number is decreased; the liquid side ends of the outdoor heat exchangers are connected with liquid collecting pipes through pipelines, and the liquid sides of all the indoor heat exchangers are connected with the liquid collecting pipes.
Description
Technical field
The present invention relates to multi-connected machine.
Background technology
Existing multi-connected machine is the interior machine of a corresponding multiple parallel connection of outer machine substantially, or machine in the corresponding multiple parallel connection of the outer machine of multiple parallel connection.What the pipeline between interior machine and outer machine connected employing is two pipes system: a liquid pipe and a tracheae.Interior machine is in parallel, can only freeze simultaneously or heat simultaneously.The multi-connected machine of recuperation of heat scheme is provided to have employed three control: high-pressure air pipe, a low pressure gas pipe and a liquid pipe.Wherein, when carrying out freezing or heating, interior machine parallel connection have employed identical evaporating temperature and condensation temperature.In fact, the evaporating temperature that each interior machine needs can not be identical, obtains different colds, realizes the function of dehumidifying or refrigeration.Each interior machine does not need identical condensation temperature when heating in addition, by the time different heats.
Summary of the invention
The object of the present invention is to provide a kind of different indoor set can obtain the multi-connected machine of different evaporating temperature or condensation temperature or operational mode.
For realizing the multi-connected machine of described object, being characterized in, comprising
N number of off-premises station and M indoor set, M is greater than N, and N is greater than 1, and off-premises station comprises compressor, outdoor heat exchanger and cross valve, and indoor set comprises indoor heat exchanger, connects into refrigerant circulation loop between this N number of off-premises station and M indoor set by pipeline;
In this refrigerant loop, the ejection end of the compressor of each off-premises station is connected with the 3rd port of cross valve by pipeline, the suction side of compressor is connected with the first port of cross valve by pipeline, and the gas side of outdoor heat exchanger is connected with the 4th port of cross valve by pipeline;
In this refrigerant loop, the gas side of each indoor heat exchanger is connected with at least two branch roads, be provided with control valve in each branch road, each branch road of M indoor heat exchanger connects different gas collectors, and each gas collectors connects the second port of the cross valve of at least one off-premises station; The liquid side of outdoor heat exchanger connects liquid collectors by pipeline, and the hydraulic fluid side of each indoor heat exchanger connects this liquid collectors, and indoor heat exchanger is provided with throttling arrangement to the pipeline of outdoor heat exchanger.
Described multi-connected machine, its further feature is, if the i-th gas collectors connects at least one i-th off-premises station, i is the integer between 1 to N, when the quantity of the i-th off-premises station is greater than 1, the maximum of i is less than N, and the i-th gas collectors passes through the pipeline between the gas side of the outdoor heat exchanger of at least one in the N number of off-premises station of recuperation of heat pipeline connection except the i-th off-premises station and the 4th port of cross valve, is provided with control valve in described recuperation of heat pipeline.
Described multi-connected machine, its further feature is, the pipe number of gas collectors is minimum is 2.
Described multi-connected machine, its further feature is, the equal in number or difference 1 of off-premises station corresponding to each gas collectors.
Described multi-connected machine, its further feature is that this multi-connected machine is in standard refrigeration mode, and the compressor of each off-premises station is opened, and the cross valve of each off-premises station switches to refrigeration mode, and namely its first port is communicated with the second port, the 3rd port is communicated with the 4th port; The control valve of each described branch road is opened, and each described compressor adopts identical running frequency.
Described multi-connected machine, its further feature is, this multi-connected machine is in different load refrigeration mode, and M indoor heat exchanger at least divides into Part I and Part II, and the refrigeration capacity requirement of Part I indoor heat exchanger is higher than the refrigeration capacity requirement of Part II indoor heat exchanger; N number of gas collectors at least distinguishes Part I and Part II; The compressor of each off-premises station is opened, and the cross valve of each off-premises station switches to refrigeration mode, and namely its first port is communicated with the second port, the 3rd port is communicated with the 4th port; The Part I indoor heat exchanger that refrigeration capacity requirement is higher passes through the partial branch of its gas side of closedown connection thus is only communicated with Part I gas collectors, the lower Part II indoor heat exchanger of refrigeration capacity requirement by the partial branch of closing its gas side and connecting thus only with Part II header in communication, the running frequency of the compressor of the off-premises station at the cross valve place be connected respectively with described Part I gas collectors is higher than the running frequency of the compressor of the off-premises station at the cross valve place be connected respectively with described Part II gas collectors.
Described multi-connected machine, its further feature is that this multi-connected machine is in metric system heat pattern, and the compressor of each off-premises station is opened, the cross valve heating mode of each off-premises station, and namely its first port is communicated with the 4th port, the second port is communicated with the 3rd port; The control valve of each described branch road is opened, and each described compressor adopts identical running frequency.
Described multi-connected machine, its further feature is, this multi-connected machine is in different load heating mode, and M indoor heat exchanger at least divides into Part I and Part II, and the heating capacity demand of Part I indoor heat exchanger is higher than the heating capacity demand of Part II indoor heat exchanger; N number of gas collectors at least distinguishes Part I and Part II; The compressor of each off-premises station is opened, the cross valve heating mode of each off-premises station, and namely its first port is communicated with the 4th port, the second port is communicated with the 3rd port; The Part I indoor heat exchanger that heating capacity demand is higher passes through the partial branch of its gas side of closedown connection thus is only communicated with Part I gas collectors, the lower Part II indoor heat exchanger of heating capacity demand by the partial branch of closing its gas side and connecting thus only with Part II header in communication, the running frequency of the compressor of the off-premises station at the cross valve place be connected respectively with described Part I gas collectors is higher than the running frequency of the compressor of the off-premises station at the cross valve place be connected respectively with described Part II gas collectors.
Described multi-connected machine, its further feature is that this multi-connected machine is in refrigeration heat recovery mode, and M indoor heat exchanger at least divides into Part I and Part II, and Part I indoor heat exchanger needs refrigeration, and Part II indoor heat exchanger needs to heat; Each compressor is opened, and described N number of cross valve divides into Part I and Part II, and Part I cross valve is in refrigeration mode, and namely its first port is communicated with the second port, the 3rd port is communicated with the 4th port; Part II cross valve is in heating mode, and namely its first port is communicated with the 4th port, the second port is communicated with the 3rd port; N number of gas collectors at least distinguishes Part I and Part II, Part I gas collectors is connected respectively with the second port of the Part I cross valve being in refrigeration mode, and Part II gas collectors is connected respectively with the second port of the Part II cross valve being in heating mode; The control valve of each recuperation of heat pipeline is opened, there is the Part I indoor heat exchanger of refrigeration demand by closing the partial branch of its gas side connection thus being only communicated with Part I gas collectors, have the Part II indoor heat exchanger of heating needs by the partial branch of closing its gas side and connecting thus only with Part II header in communication, the outdoor heat exchanger of Part II cross valve place off-premises station is closed.
Described multi-connected machine, its further feature is, this multi-connected machine is in defrosting mode, N number of off-premises station divides into Part I and Part II, in Part I off-premises station, its outdoor heat exchanger needs defrosting, and cross valve is in refrigeration mode, and namely its first port is communicated with the second port, the 3rd port is communicated with the 4th port; In Part II off-premises station, its cross valve is in heating mode, and namely its first port is communicated with the 4th port, the second port is communicated with the 3rd port; N number of gas collectors at least distinguishes Part I and Part II, and Part I gas collectors is connected respectively with the second port of the cross valve being in refrigeration mode, and Part II gas collectors is connected respectively with the second port of the cross valve being in heating mode; N number of indoor heat exchanger divides into Part I and Part II, Part I indoor heat exchanger by close its gas side connect partial branch thus is only communicated with Part I gas collectors, Part II indoor heat exchanger by close its gas side connection partial branch thus only with Part II header in communication; The control valve of Part I recuperation of heat pipeline is closed, and the control valve of Part II recuperation of heat pipeline is opened.
Realization of the present invention is not difficult, can carry out improving and obtaining on the basis of interior machine three control, indoor set can obtain different evaporating temperature, condensation temperature, operational mode, multiple outer machine is had to provide different condensation temperatures and evaporating temperature, embodiments of the invention can also retain the refrigeration heat recovery function of original unit simultaneously, can also realize outer machine and defrost separately.
Accompanying drawing explanation
The above and other features of the present invention, character and advantage become more obvious by passing through below in conjunction with the description of drawings and Examples, wherein:
Fig. 1 is the block diagram that multi-connected machine in one embodiment of the invention is in standard refrigeration mode.
Fig. 2 is in the block diagram of different load refrigeration mode for the multi-connected machine shown in Fig. 1.
Fig. 3 is in the block diagram of metric system heat pattern for the multi-connected machine shown in Fig. 1.
Fig. 4 is in the block diagram of different load heating mode for the multi-connected machine shown in Fig. 1.
Fig. 5 for the multi-connected machine shown in Fig. 1 be in refrigeration heat recovery mode block diagram.
Fig. 6 is in the block diagram of defrosting mode for the multi-connected machine shown in Fig. 1.
Fig. 7 is in the block diagram of defrosting mode for the multi-connected machine shown in Fig. 1.
Detailed description of the invention
In the following description, with reference to each embodiment, present invention is described.But, person of skill in the art will appreciate that and can replace when neither one or multiple specific detail or with other and/or implement each embodiment together with addition method, material or assembly.In other situation, not shown or do not describe known structure, material or operation in detail in order to avoid make the aspects of various embodiments of the present invention obscure.Similarly, in order to the object explained, specific quantity and configuration are set forth, to provide the complete understanding to embodiments of the invention.But the present invention can implement when not having specific detail.In addition, each embodiment shown in accompanying drawing should be understood be illustrative expression and not necessarily draw in proportion.
Set forth more details in the following description so that fully understand the present invention; but the present invention obviously can implement with multiple this alternate manner described that is different from; those skilled in the art when doing similar popularization, deduction without prejudice to when intension of the present invention according to practical situations, therefore should can not limit the scope of the invention with the content of this specific embodiment.
Arbitrary figure in Fig. 1 to Fig. 7 shows the circuit configurations figure of multi-connected machine in one embodiment of the invention; it should be noted that; these and follow-up other accompanying drawing all only exemplarily; it is not draw according to the complete line that part is many; its abridged detail section can be supplemented by those skilled in the art's instruction according to the present invention, and this should not be construed as limiting in this, as to the protection domain of actual requirement of the present invention.
In one embodiment of the invention, multi-connected machine comprises N number of off-premises station and M indoor set, and M is greater than N, and N is greater than 1, and in FIG, N is 2, M is 5, but is not limited thereto, N can be three or other be suitable for the quantity of requirement of engineering, similarly, M is also not limited to 5.Off-premises station comprises compressor, outdoor heat exchanger and cross valve, and indoor set comprises indoor heat exchanger, connects into refrigerant circulation loop between this N number of off-premises station and M indoor set by pipeline.
In inventive embodiment, N number of off-premises station may can be divided into Part I and Part II, and similarly, indoor set also may be divided into Part I and Part II.In FIG, compressor 111 represents Part I compressor, compressor 112 represents Part II compressor, outdoor heat exchanger 101 represents Part I outdoor heat exchanger, outdoor heat exchanger 102 represents Part II outdoor heat exchanger, indoor heat exchanger 121, 122, 123 represent Part I indoor heat exchanger, indoor heat exchanger 124, 125 represent Part II indoor heat exchanger, cross valve 11 represents Part I cross valve, cross valve 12 represents Part II cross valve, gas collectors 411 represents Part I gas collectors, gas collectors 412 represents Part II gas collectors, recovery tubes 311 represents Part I recovery tubes, recovery tubes 312 represents Part II recovery tubes.In addition, the branch road 511 that the gas side of each indoor heat exchanger connects represents Part I branch road, and branch road 512 represents Part II branch road.
As shown in Figure 1, the suction side of compressor 111 is connected by pipeline with the first port of cross valve 11, the ejection end of compressor 111 is connected by pipeline with the 3rd port of cross valve 11, the gas side of outdoor heat exchanger 101 is connected with the 4th port of cross valve 11 by pipeline, and the second port of cross valve 11 connects with the first described gas collectors 411.Corresponding to indoor heat exchanger 121,122,123,124,125, be provided with two gas collectors 411,212, each indoor heat exchanger is connected with two gas collectors 411,212 respectively by the branch road 511,512 of its gas side, the liquid side connecting fluid body collector 213 of each indoor heat exchanger, liquid collectors 213 is connected by pipeline with the liquid side of outdoor heat exchanger 101.
In FIG, compressor 111, cross valve 11, outdoor heat exchanger 101 are accommodated in an off-premises station, and compressor 112, cross valve 12, outdoor heat exchanger 102 are accommodated in another off-premises station, and the two is the equal of be arranged in parallel.Namely the suction side of compressor 112 is connected by pipeline with the first port of cross valve 12, the ejection end of compressor 112 is connected by pipeline with the 3rd port of cross valve 12, the gas side of outdoor heat exchanger 102 is connected with the 4th port of cross valve 12 by pipeline, and the second port of cross valve 12 connects with the second gas collectors 412.The liquid side connecting fluid body collector 213 of each indoor heat exchanger, liquid collectors 213 is also connected by pipeline with the liquid side of outdoor heat exchanger 102.
Continue with reference to Fig. 1, one end of recovery tubes 311 is connected to the pipeline between outdoor heat exchanger 101 to cross valve 11, and the other end is connected to the second gas collectors 412.One end of recovery tubes 312 is connected to the pipeline between outdoor heat exchanger 102 to cross valve 12, and the other end is connected to the first gas collectors 411.
Continue, with reference to Fig. 1, to be provided with by-pass valve control in recovery tubes 311,312, in each branch road 511,512, to be also provided with by-pass valve control.
The liquid side of outdoor heat exchanger 101 has been arranged in parallel expansion valve 61 and check valve 62, the liquid side of each indoor heat exchanger 121,122,123,124,125 is provided with expansion valve 63, and expansion valve 61 and check valve 62, expansion valve 63 form the throttling arrangement in its refrigerant loop.
Fig. 1 to Fig. 7 respectively illustrates the different operational modes of multi-connected machine.Illustrate respectively below.
Fig. 1 shows standard refrigeration mode, in this mode, compressor 111,112 is opened, cross valve 11 is in refrigeration mode, cross valve 12 refrigeration mode, the refrigeration mode of cross valve is that its first port and the second port are connected, 3rd port and the 4th port are connected, and the heating mode of cross valve is that its first port and the 4th port are connected, and the second port and the 3rd port are connected.Control valve 21,22 in recuperation of heat pipeline 311,312 is closed.The control valve 211,212 of each branch road 511,512 is opened, and indoor set heat exchanger 121,122,123,124,125 adopts identical evaporating temperature to freeze; Compressor 111 and compressor 112 adopt identical running frequency.
Cold-producing medium flows according to arrow mode in figure.Outdoor heat exchanger 101,102 carries out condensation action, and indoor heat exchanger 121,122,123,124,125 carries out evaporation action.
Fig. 2 shows different load refrigeration mode, and in this mode, suppose that the refrigeration capacity requirement of indoor heat exchanger 124,125 is low, the refrigeration demand of indoor heat exchanger 121,122,123 is high.Compressor 111,112 is opened, and cross valve 11,12 is in refrigeration mode, and control valve 21,22 is closed.The control valve 211 of the branch road 511 of indoor heat exchanger 121,122,123 correspondence is closed, the control valve 212 of the branch road 512 of indoor heat exchanger 124,125 correspondence is closed, the control valve 212 of the branch road 512 of indoor heat exchanger 121,122,123 correspondence is opened, and the control valve 211 of the branch road 511 of indoor heat exchanger 124,125 correspondence is opened.Indoor set adopts different evaporating temperatures to freeze.Compressor 111 adopts high-frequency to run, and meets the high refrigeration capacity requirement of indoor heat exchanger 121,122,123.Compressor 112 adopts low running frequency, obtains high evaporation temperature, reduces the energy consumption of unit.Cold-producing medium flows according to arrow mode in figure.Outdoor heat exchanger 101,102 carries out condensation action, and indoor heat exchanger 121,122,123,124,125 carries out evaporation action.
Fig. 3 shows metric system heat pattern, and in this mode, compressor 111 leaves, compressor 112 leaves, cross valve 11 is in heating mode, and cross valve 12 is in heating mode, and control valve 21 closes, control valve 22 closes, control valve 211,212 standard-sized sheet, indoor set adopts identical condensation temperature to heat; Compressor 111 and compressor 112 adopt identical running frequency.Outdoor heat exchanger 101,102 carries out evaporation action, and indoor heat exchanger 121,122,123,124,125 carries out condensation action.
Fig. 4 shows different load heating mode, supposes that the heating capacity demand of indoor heat exchanger 124 and indoor heat exchanger 125 is low.Compressor 111 leaves, compressor 112 leaves, cross valve 11 is in heating mode, cross valve 12 is in heating mode, control valve 21 closes, and control valve 22 closes, and the control valve 211 of the first branch road 511 of the gas side of indoor heat exchanger 121,122,123 is closed, second control valve 212 of the second branch road 512 is opened, and the control valve 211 of the first branch road 511 of the gas side of indoor heat exchanger 123,124 is opened, the control valve 212 of the second branch road 512 is closed.Indoor set 121,122,123,124,125 adopts different condensation temperatures to heat.Compressor 111 adopts high-frequency to run, and meets the high refrigeration capacity requirement of indoor heat exchanger 121,122,123, obtains high leaving air temp; Compressor 112 adopts low running frequency, obtains low condensation temperature, reduces the energy consumption of unit.Outdoor heat exchanger 101,102 carries out evaporation action, and indoor heat exchanger 121,122,123,124,125 carries out condensation action.
Fig. 5 shows refrigeration heat recovery mode, supposes that indoor heat exchanger 121,122,123 needs refrigeration, and indoor heat exchanger 124 and indoor heat exchanger 125 need to heat.Compressor 111 leaves, compressor 112 leaves, cross valve 11 is in refrigeration mode, cross valve 12 is in heating mode, control valve 21 is opened, control valve 22 is opened, the control valve 211 of the first branch road 511 of the gas side of indoor heat exchanger 121,122,123 is closed, the control valve 212 of the second branch road is opened, and the control valve 211 of the first branch road 511 of the gas side of indoor heat exchanger 124,125 is opened, the control valve 212 of the second branch road is closed.Compressor 111 and compressor 112 can adopt same frequency to run, and the entrance expansion valve of outdoor heat exchanger 102 cuts out and do not work, and indoor heat exchanger 121,122,123 is in evaporation work, meets the refrigeration capacity requirement of indoor heat exchanger 121,122,123; Indoor heat exchanger 124, indoor heat exchanger 125 are in condensation end, obtain heating capacity, and outdoor heat exchanger 101 is in condensation end, regulate blower fan, discharge unnecessary heat.
Fig. 6 shows the defrosting mode of outdoor heat exchanger 101, and outdoor heat exchanger 101 needs defrosting; Compressor 111 leaves, compressor 112 leaves, cross valve 11 switches to refrigeration mode, cross valve 12 switches to heating mode, control valve 21 closes, control valve 22 is opened, the control valve 211 of the first branch road 511 of the gas side of indoor heat exchanger 121,122,123 is opened, the control valve 212 of the second branch road is closed, the control valve 211 of the first branch road 511 of the gas side of indoor heat exchanger 124,125 is opened, the control valve 212 of the second branch road is closed, outdoor heat exchanger 101 carries out condensation action, defrost, compressor 111 is by control valve 22 heat exchanger 102 air-breathing outdoor.
Fig. 7 shows the defrosting mode of outdoor heat exchanger 102, compressor 111 leaves, compressor 112 leaves, cross valve 11 switches to heating mode, cross valve 12 switches to refrigeration mode, control valve 21 is opened, control valve 22 closes, indoor heat exchanger 121, 122, the control valve 211 of the first branch road 511 of the gas side of 123 is closed, the control valve 212 of the second branch road is opened, indoor heat exchanger 124, the control valve 211 of the first branch road 511 of the gas side of 125 is closed, the control valve 212 of the second branch road is opened, outdoor heat exchanger 102 is in condensation end, defrost, compressor 112 is by control valve 21 evaporimeter 101 air-breathing indoor.
According in previous embodiment, be appreciated that, N number of off-premises station and M indoor set, M is greater than N, and N is greater than 1, and off-premises station comprises compressor, outdoor heat exchanger and cross valve, indoor set comprises indoor heat exchanger, connects into refrigerant circulation loop between this N number of off-premises station and M indoor set by pipeline; In this refrigerant loop, the ejection end of the compressor of each off-premises station is connected with the 3rd port of cross valve by pipeline, the suction side of compressor is connected with the first port of cross valve by pipeline, and the gas side of outdoor heat exchanger is connected with the 4th port of cross valve by pipeline; In this refrigerant loop, the gas side of each indoor heat exchanger is connected with N number of branch road, is provided with control valve in each branch road, and each i-th branch road of M indoor heat exchanger connects the i-th gas collectors, i is the integer between 1 to N, and the i-th gas collectors connects the second port of the cross valve of the i-th off-premises station; The liquid side of outdoor heat exchanger connects liquid collectors by pipeline, and the hydraulic fluid side of each indoor heat exchanger connects this liquid collectors, and indoor heat exchanger is provided with throttling arrangement to the pipeline of outdoor heat exchanger.
It is also understood that, discharge can merge as required, and final discharge quantity is no less than 2.
In preferred embodiment, the off-premises station quantity that each discharge is corresponding is equal or differ 1.
Specifically, the off-premises station that the off-premises station on the left side shown in a Fig. 1 or right side is the same can also be increased, the off-premises station of this increase can connect identical gas collectors or recovery tubes with left side or right side off-premises station in figure, or different gas collectors or recovery tubes.
In addition, the quantity of liquid collectors 213 also can be not limited to one, and more than two are also fine, and can distribute different indoor set hydraulic fluid sides be connected with them according to design.
Give the foregoing description of embodiments of the invention for the purpose of illustration and description.Do not intend exhaustive or limit the invention to disclosed precise forms.This description and claims comprise such as first, second etc. term, these only should not be construed as restriction for the object described.Those skilled in the relevant art can understand a lot of amendment according to above teaching and distortion is possible.Person of skill in the art will appreciate that various equivalent combinations and the replacement of each assembly shown in accompanying drawing.Therefore scope of the present invention is not limited by this detail specifications but be defined by the following claims.Therefore, every content not departing from technical solution of the present invention, any amendment done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all fall within protection domain that the claims in the present invention define.
Claims (10)
1. a multi-connected machine, is characterized in that, comprises
N number of off-premises station and M indoor set, M is greater than N, and N is greater than 1, and off-premises station comprises compressor, outdoor heat exchanger and cross valve, and indoor set comprises indoor heat exchanger, connects into refrigerant circulation loop between this N number of off-premises station and M indoor set by pipeline;
In this refrigerant loop, the ejection end of the compressor of each off-premises station is connected with the 3rd port of cross valve by pipeline, the suction side of compressor is connected with the first port of cross valve by pipeline, and the gas side of outdoor heat exchanger is connected with the 4th port of cross valve by pipeline;
In this refrigerant loop, the gas side of each indoor heat exchanger is connected with at least two branch roads, be provided with control valve in each branch road, each branch road of M indoor heat exchanger connects different gas collectors, and each gas collectors connects the second port of the cross valve of at least one off-premises station; The liquid side of outdoor heat exchanger connects liquid collectors by pipeline, and the hydraulic fluid side of each indoor heat exchanger connects this liquid collectors, and indoor heat exchanger is provided with throttling arrangement to the pipeline of outdoor heat exchanger.
2. multi-connected machine as claimed in claim 1, it is characterized in that, if the i-th gas collectors connects at least one i-th off-premises station, i is the integer between 1 to N, when the quantity of the i-th off-premises station is greater than 1, the maximum of i is less than N, and the i-th gas collectors passes through the pipeline between the gas side of the outdoor heat exchanger of at least one in the N number of off-premises station of recuperation of heat pipeline connection except the i-th off-premises station and the 4th port of cross valve, is provided with control valve in described recuperation of heat pipeline.
3. multi-connected machine as claimed in claim 1, it is characterized in that, the pipe number of gas collectors is minimum is 2.
4. multi-connected machine as claimed in claim 3, is characterized in that, the equal in number or difference 1 of off-premises station corresponding to each gas collectors.
5. multi-connected machine as claimed in claim 1 or 2, it is characterized in that this multi-connected machine is in standard refrigeration mode, the compressor of each off-premises station is opened, and the cross valve of each off-premises station switches to refrigeration mode, and namely its first port is communicated with the second port, the 3rd port is communicated with the 4th port; The control valve of each described branch road is opened, and each described compressor adopts identical running frequency.
6. multi-connected machine as claimed in claim 1 or 2, it is characterized in that this multi-connected machine is in different load refrigeration mode, M indoor heat exchanger at least divides into Part I and Part II, and the refrigeration capacity requirement of Part I indoor heat exchanger is higher than the refrigeration capacity requirement of Part II indoor heat exchanger; N number of gas collectors at least distinguishes Part I and Part II; The compressor of each off-premises station is opened, and the cross valve of each off-premises station switches to refrigeration mode, and namely its first port is communicated with the second port, the 3rd port is communicated with the 4th port; The Part I indoor heat exchanger that refrigeration capacity requirement is higher passes through the partial branch of its gas side of closedown connection thus is only communicated with Part I gas collectors, the lower Part II indoor heat exchanger of refrigeration capacity requirement by the partial branch of closing its gas side and connecting thus only with Part II header in communication, the running frequency of the compressor of the off-premises station at the cross valve place be connected respectively with described Part I gas collectors is higher than the running frequency of the compressor of the off-premises station at the cross valve place be connected respectively with described Part II gas collectors.
7. multi-connected machine as claimed in claim 1 or 2, it is characterized in that this multi-connected machine is in metric system heat pattern, the compressor of each off-premises station is opened, the cross valve heating mode of each off-premises station, and namely its first port is communicated with the 4th port, the second port is communicated with the 3rd port; The control valve of each described branch road is opened, and each described compressor adopts identical running frequency.
8. multi-connected machine as claimed in claim 1 or 2, it is characterized in that this multi-connected machine is in different load heating mode, M indoor heat exchanger at least divides into Part I and Part II, and the heating capacity demand of Part I indoor heat exchanger is higher than the heating capacity demand of Part II indoor heat exchanger; N number of gas collectors at least distinguishes Part I and Part II; The compressor of each off-premises station is opened, the cross valve heating mode of each off-premises station, and namely its first port is communicated with the 4th port, the second port is communicated with the 3rd port; The Part I indoor heat exchanger that heating capacity demand is higher passes through the partial branch of its gas side of closedown connection thus is only communicated with Part I gas collectors, the lower Part II indoor heat exchanger of heating capacity demand by the partial branch of closing its gas side and connecting thus only with Part II header in communication, the running frequency of the compressor of the off-premises station at the cross valve place be connected respectively with described Part I gas collectors is higher than the running frequency of the compressor of the off-premises station at the cross valve place be connected respectively with described Part II gas collectors.
9. multi-connected machine as claimed in claim 2, it is characterized in that this multi-connected machine is in refrigeration heat recovery mode, M indoor heat exchanger at least divides into Part I and Part II, and Part I indoor heat exchanger needs refrigeration, and Part II indoor heat exchanger needs to heat; Each compressor is opened, and described N number of cross valve divides into Part I and Part II, and Part I cross valve is in refrigeration mode, and namely its first port is communicated with the second port, the 3rd port is communicated with the 4th port; Part II cross valve is in heating mode, and namely its first port is communicated with the 4th port, the second port is communicated with the 3rd port; N number of gas collectors at least distinguishes Part I and Part II, Part I gas collectors is connected respectively with the second port of the Part I cross valve being in refrigeration mode, and Part II gas collectors is connected respectively with the second port of the Part II cross valve being in heating mode; The control valve of each recuperation of heat pipeline is opened, there is the Part I indoor heat exchanger of refrigeration demand by closing the partial branch of its gas side connection thus being only communicated with Part I gas collectors, have the Part II indoor heat exchanger of heating needs by the partial branch of closing its gas side and connecting thus only with Part II header in communication, the outdoor heat exchanger of Part II cross valve place off-premises station is closed.
10. multi-connected machine as claimed in claim 2, it is characterized in that this multi-connected machine is in defrosting mode, N number of off-premises station divides into Part I and Part II, in Part I off-premises station, its outdoor heat exchanger needs defrosting, cross valve is in refrigeration mode, and namely its first port is communicated with the second port, the 3rd port is communicated with the 4th port; In Part II off-premises station, its cross valve is in heating mode, and namely its first port is communicated with the 4th port, the second port is communicated with the 3rd port; N number of gas collectors at least distinguishes Part I and Part II, and Part I gas collectors is connected respectively with the second port of the cross valve being in refrigeration mode, and Part II gas collectors is connected respectively with the second port of the cross valve being in heating mode; N number of indoor heat exchanger divides into Part I and Part II, Part I indoor heat exchanger by close its gas side connect partial branch thus is only communicated with Part I gas collectors, Part II indoor heat exchanger by close its gas side connection partial branch thus only with Part II header in communication; The control valve of Part I recuperation of heat pipeline is closed, and the control valve of Part II recuperation of heat pipeline is opened.
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| CN201410670262.9A CN104456731B (en) | 2014-11-21 | 2014-11-21 | Multi-connected machine |
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| CN201410670262.9A CN104456731B (en) | 2014-11-21 | 2014-11-21 | Multi-connected machine |
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| CN104456731A true CN104456731A (en) | 2015-03-25 |
| CN104456731B CN104456731B (en) | 2017-10-20 |
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| CN104456731B (en) | 2017-10-20 |
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