CN106288028A - Air injection enthalpy-increasing air conditioning system - Google Patents

Air injection enthalpy-increasing air conditioning system Download PDF

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Publication number
CN106288028A
CN106288028A CN201610698062.3A CN201610698062A CN106288028A CN 106288028 A CN106288028 A CN 106288028A CN 201610698062 A CN201610698062 A CN 201610698062A CN 106288028 A CN106288028 A CN 106288028A
Authority
CN
China
Prior art keywords
air
increasing
enthalpy
pipeline
outdoor unit
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
CN201610698062.3A
Other languages
Chinese (zh)
Inventor
卜其辉
许永锋
梁伯启
李宏伟
董世龙
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 CN201610698062.3A priority Critical patent/CN106288028A/en
Publication of CN106288028A publication Critical patent/CN106288028A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08Compressors specially adapted for separate outdoor units
    • F24F1/10Arrangement or mounting thereof
    • 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
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control 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
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units

Abstract

The present invention proposes a kind of air injection enthalpy-increasing air conditioning system, including indoor apparatus of air conditioner, the air-conditioner outdoor unit that at least two is in parallel, and connect air-conditioner outdoor unit and the main refrigerant pipeline of indoor apparatus of air conditioner and main refrigerant pipeline loop, each air-conditioner outdoor unit includes an air injection enthalpy-increasing compressor;Described air injection enthalpy-increasing air conditioning system also includes an air jet system, connect the increasing enthalpy pipeline of described air jet system and each air injection enthalpy-increasing compressor, described air jet system is arranged at the arbitrary node of described main refrigerant pipeline, enter during the heat of vaporization in the coolant described air jet system of absorption increasing enthalpy pipeline becomes and press gaseous coolant, flow into the air injection enthalpy-increasing compressor of each air-conditioner outdoor unit.The present invention solves multi-online air-conditioning system when off-premises station parallel connection, sets up the technical problem of economizer, expansion valve and respective line, and air jet system is flexible for installation, greatly reduce the cost of system, it is to avoid the wasting of resources.

Description

Air injection enthalpy-increasing air conditioning system
Technical field
The present invention relates to steam compression type refrigeration field of air conditioning, particularly relate to a kind of air injection enthalpy-increasing air conditioning system.
Background technology
In order to promote multi-online air-conditioning system heating effect at low ambient temperatures, the modes using two-stage compression carry more High heating capacity, the compressor of band air injection enthalpy-increasing is equivalent to a two-stage compression system, can reach to improve the work of heating effect With.At present, the air conditioning system of band air injection enthalpy-increasing, the gaseous coolant of pressure during an economizer typically will be used to obtain, as spray The injection gas of gas enthalpy-increasing compressor, when multiple stage off-premises station parallel connection, needs to be independently arranged multiple economizer, expansion valve and corresponding Pipeline, add cost.
Summary of the invention
Present invention is primarily targeted at a kind of air injection enthalpy-increasing air conditioning system of offer, at the off-premises station of multi-online air-conditioning system Time in parallel, it is not necessary to set up economizer, expansion valve and respective line.
For achieving the above object, the present invention proposes a kind of air injection enthalpy-increasing air conditioning system, including indoor apparatus of air conditioner, at least two Air-conditioner outdoor unit in parallel, and connect air-conditioner outdoor unit and the main refrigerant pipeline of indoor apparatus of air conditioner and main refrigerant pipeline loop, Each air-conditioner outdoor unit includes air injection enthalpy-increasing compressor;
Described air injection enthalpy-increasing air conditioning system also includes air jet system, connects described air jet system and each air-conditioner outdoor unit Increasing enthalpy pipeline, described air jet system is arranged at the arbitrary node of described main refrigerant pipeline, and the coolant entering increasing enthalpy pipeline absorbs institute State during the heat of vaporization in air jet system becomes and press gaseous coolant, flow into the air injection enthalpy-increasing compressor of each air-conditioner outdoor unit.
Further, each air-conditioner outdoor unit also includes an increasing enthalpy branch road, and one end of described increasing enthalpy branch road connects jet and increases Enthalpy compressor, the other end connects described increasing enthalpy pipeline, and every increases enthalpy branch road and is provided with a solenoid valve, controls to increase opening of enthalpy branch road Open and close.
Further, the main refrigerant pipeline between described air jet system and air-conditioner outdoor unit is provided with air jet system liquid side and enters Mouth stop valve, the main refrigerant pipeline between described air jet system and indoor apparatus of air conditioner is provided with the cut-off of air jet system liquid side outlet Valve, the increasing enthalpy pipeline between described air jet system and air-conditioner outdoor unit is provided with air jet system gas side outlet stop valve.
Further, described air jet system includes the economizer being arranged at described main refrigerant pipeline, and is arranged at described increasing The throttle part of enthalpy pipeline, described increasing enthalpy pipeline runs through described economizer, and described throttle part is arranged at described increasing enthalpy pipeline Between arrival end and described economizer.
Further, the arrival end of described increasing enthalpy pipeline, it is arranged at described economizer and ends with air jet system liquid side-entrance Between valve, or it is arranged between described economizer and air jet system liquid side outlet stop valve.
Further, described economizer is plate type heat exchanger or double pipe heat exchanger, and described throttle part is electronic expansion Valve or heating power expansion valve.
Further, this air injection enthalpy-increasing air conditioning system includes outside two the first air-conditioner outdoor units in parallel and the second air conditioning chamber Machine;
Described first air-conditioner outdoor unit include being sequentially connected in series formation the first air injection enthalpy-increasing compressor of the first pipeline, the one or four Logical valve, the first air cooling heat exchanger, the first outdoor throttle part, the first off-premises station liquid side stop valve, be sequentially connected in series formation the first pipe First gas-liquid separator in loop, road and the first off-premises station gas side stop valve, and it is sequentially connected in series the first of formation the first increasing enthalpy branch road Solenoid valve and the first off-premises station puff prot stop valve;
Described second air-conditioner outdoor unit include being sequentially connected in series formation the second air injection enthalpy-increasing compressor of the second pipeline, the two or four Logical valve, the second air cooling heat exchanger, the second outdoor throttle part, the second off-premises station liquid side stop valve, be sequentially connected in series formation the second pipe Second gas-liquid separator in loop, road and the second off-premises station gas side stop valve, and it is sequentially connected in series the second of formation the second increasing enthalpy branch road Solenoid valve and the second off-premises station puff prot stop valve;
Described first pipeline and the second pipeline are connected in described main refrigerant pipeline, described first conduit and the second pipe Loop, road is connected in described main refrigerant pipeline loop, and described first increasing enthalpy branch road and second increases enthalpy branch circuit parallel connection and is connected to described increasing Enthalpy pipeline.
Further, described first air cooling heat exchanger and the second air cooling heat exchanger use water cooling heat exchanger to substitute.
Further, described air injection enthalpy-increasing air conditioning system also includes that controller, the first temperature sensor and the second temperature pass Sensor,
Described first temperature sensor is arranged between economizer and throttle part;
Described second temperature sensor is arranged between economizer and air jet system gas side outlet stop valve;
The input of described controller connects described first temperature sensor and the second temperature sensor, outfan connecting joint Stream unit.
The air injection enthalpy-increasing air conditioning system of the present invention, by main refrigerant pipeline and main refrigerant pipeline loop by indoor apparatus of air conditioner and The air-conditioner outdoor unit connection that at least two is in parallel, enters product in the air jet system on the coolant main refrigerant pipeline of absorption increasing enthalpy pipeline Raw heat of vaporization presses gaseous coolant in becoming, and enters the air injection enthalpy-increasing compressor of each air-conditioner outdoor unit, it is achieved air injection enthalpy-increasing, from Realize the economizer of air injection enthalpy-increasing, expansion valve and respective line without being separately provided for each air-conditioner outdoor unit, solve many Online air-conditioning system, when off-premises station parallel connection, is set up the technical problem of economizer, expansion valve, and air jet system is flexible for installation, big Reduce greatly the cost of system, it is to avoid the wasting of resources.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to Other accompanying drawing is obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the structural representation of air injection enthalpy-increasing air conditioning system one embodiment of the present invention;
Fig. 2 is the structural representation of air injection enthalpy-increasing another embodiment of air conditioning system of the present invention.
Drawing reference numeral illustrates:
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Base Embodiment in the present invention, those of ordinary skill in the art obtained under not paying creative work premise all its His embodiment, broadly falls into the scope of protection of the invention.
It is to be appreciated that directional instruction in the embodiment of the present invention (such as up, down, left, right, before and after ...) is only used In explaining relative position relation between each parts, motion conditions etc. under a certain particular pose (as shown in drawings), if should When particular pose changes, then directionality instruction changes the most therewith.
It addition, the description relating to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that refer to Show or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", " Two " feature can express or implicitly include at least one this feature.It addition, the technical scheme between each embodiment can To be combined with each other, but must be based on those of ordinary skill in the art are capable of, when the combination of technical scheme occurs Conflicting will be understood that the combination of this technical scheme does not exists, the most not at the protection model of application claims when maybe cannot realize Within enclosing.
With reference to Fig. 1 and 2, in the present embodiment, this air injection enthalpy-increasing air conditioning system, including indoor apparatus of air conditioner, at least two is also The air-conditioner outdoor unit of connection, and connect air-conditioner outdoor unit and the main refrigerant pipeline 16 of indoor apparatus of air conditioner and main refrigerant pipeline loop 17, each air-conditioner outdoor unit includes air injection enthalpy-increasing compressor;
Described air injection enthalpy-increasing air conditioning system also includes air jet system 14, connects outside described air jet system 14 and each air conditioning chamber The increasing enthalpy pipeline 18 of machine, described air jet system 14 is arranged at the arbitrary node of described main refrigerant pipeline 16, enters and increases enthalpy pipeline 18 Coolant absorb during the heat of vaporization in described air jet system 14 becomes and press gaseous coolant, the jet flowing into each air-conditioner outdoor unit increases Enthalpy compressor.
The air injection enthalpy-increasing air conditioning system of the present embodiment, including outdoor machine system part, indoor set system part and duct portion Point, outdoor machine system is connected in parallel by least two air-conditioner outdoor unit, and each air-conditioner outdoor unit includes an air injection enthalpy-increasing pressure Contracting machine, indoor set system can be single indoor apparatus of air conditioner can also be multiple indoor apparatus of air conditioner in parallel, pipeline portions includes Main refrigerant pipeline 16 and main refrigerant pipeline loop 17;The refrigerant pipeline of each air-conditioner outdoor unit in outdoor machine system collects parallel connection After be connected on main refrigerant pipeline 16 and main refrigerant pipeline loop 17, the refrigerant pipeline of the indoor apparatus of air conditioner in indoor set system is also It is connected on main refrigerant pipeline 16 and main refrigerant pipeline loop 17, makes outdoor machine system and indoor set system by main refrigerant pipeline 16 and main refrigerant pipeline loop 17 constitute a complete blood circulation.
The air injection enthalpy-increasing air conditioning system of the present embodiment also includes an air jet system 14 and increases enthalpy pipeline 18, described increasing enthalpy pipeline 18 connect described air jet system 14 and each air-conditioner outdoor unit, and described air jet system 14 is disposed in the outdoor machine system and indoor set system On main refrigerant pipeline 16 between system, during the heat of vaporization produced in entering the coolant absorption air jet system 14 of increasing enthalpy pipeline 18 becomes The gaseous coolant of pressure, by increasing the middle pressure chamber that enthalpy pipeline 18 is flowed into the air injection enthalpy-increasing compressor of each air-conditioner outdoor unit, it is achieved Air injection enthalpy-increasing, improves capacity and the efficiency of air conditioning system.
Further, with reference to Fig. 1 and 2, each air-conditioner outdoor unit also includes an increasing enthalpy branch road, one end of described increasing enthalpy branch road Connecting air injection enthalpy-increasing compressor, the other end connects described increasing enthalpy pipeline 18, and every increases enthalpy branch road and is provided with a solenoid valve, controls Increase the opening and closing of enthalpy branch road.
The air injection enthalpy-increasing air conditioning system of this example, increases enthalpy pipeline 18 and includes two parts, i.e. connect the supervisor of air jet system 14 Road part and be disposed in the outdoor machine intrasystem increasing enthalpy branched portion, the air injection enthalpy-increasing compressor of each air-conditioner outdoor unit connects one Bar increases enthalpy branch road, is connected to the main line part outside air conditioner outdoor unit system, constitutes complete increasing enthalpy pipeline 18 after parallel connection.Often In one air-conditioner outdoor unit, the increasing enthalpy branch road of the puff prot connecting air injection enthalpy-increasing compressor is provided with a solenoid valve, in order to Control this opening and closing increasing enthalpy branch road, in order to adjust the operation number of the air-conditioner outdoor unit of off-premises station air conditioning system at any time Amount, improves the Energy Efficiency Ratio of whole system.
Further, with reference to Fig. 1 and 2, the main refrigerant pipeline 16 between described air jet system 14 and air-conditioner outdoor unit sets Air jet system liquid side-entrance stop valve 8, described air jet system 14 is had to be provided with jet with the main refrigerant pipeline 16 of indoor apparatus of air conditioner Device liquid side outlet stop valve 10, the increasing enthalpy pipeline 18 between described air jet system 14 and air-conditioner outdoor unit is provided with air jet system Gas side outlet stop valve 9.
The air injection enthalpy-increasing air conditioning system of this example, on the main refrigerant pipeline 16 between air jet system 14 and air-conditioner outdoor unit Being provided with air jet system liquid side-entrance stop valve 8, described air jet system liquid side-entrance stop valve 8 is positioned close to air jet system 14 Node;The air jet system 14 main refrigerant pipeline 16 with indoor apparatus of air conditioner is provided with air jet system liquid side outlet stop valve 10, Described air jet system liquid side outlet stop valve 10 is positioned close to the node of air jet system 14;Enter by arranging air jet system liquid side Mouth stop valve 8 and air jet system liquid side outlet stop valve 10, be convenient for changing and keep in repair in air jet system 14 or air jet system 14 Components and parts;Air jet system gas side outlet stop valve it is provided with on increasing enthalpy pipeline 18 between air jet system 14 and air-conditioner outdoor unit 9, described air jet system gas side outlet stop valve 9 is positioned close to the node of air jet system 14, by arranging air jet system gas side Outlet shutoff valve 9 increases being connected in parallel of enthalpy branch road in facilitating off-premises station air conditioning system, easy to operate, it is possible to increase the installation of air-conditioning And debugging efficiency.
Further, with reference to Fig. 1 and 2, described air jet system 14 includes the economizer being arranged at described main refrigerant pipeline 16 141, and it is arranged at the throttle part 143 of described increasing enthalpy pipeline 18, described increasing enthalpy pipeline 18 runs through described economizer 141, described Increase enthalpy pipeline 18 and include arrival end, this arrival end be arranged at described economizer 141 and air jet system liquid side-entrance stop valve 8 it Between, or be arranged between described economizer 141 and air jet system liquid side outlet stop valve 10, described throttle part 143 is arranged Between arrival end and the described economizer 141 of described increasing enthalpy pipeline 18.
The air injection enthalpy-increasing air conditioning system of the present invention, in the embodiment that Fig. 1 and Fig. 2 provides, described air jet system 14 is main Being made up of economizer 141 and throttle part 143, economizer 141 is arranged on main refrigerant pipeline 16, and throttle part 143 is arranged on Increasing on enthalpy pipeline 18, described increasing enthalpy pipeline 18 also extends through described economizer 141 when wiring arrangement.In the embodiment that Fig. 2 provides In, the arrival end increasing enthalpy pipeline 18 is arranged between described economizer 141 and air jet system liquid side-entrance stop valve 8, increases enthalpy pipe The liquid refrigerants that road 18 extension is directly flowed out by outdoor machine system, through throttle part 143 reducing pressure by regulating flow, then through warp Absorbing the coolant in main refrigerant pipeline 16 during Ji device 141 and expand the heat of release, evaporation becomes middle pressure gaseous coolant, enters outdoor The middle pressure chamber of the air injection enthalpy-increasing compressor of each air-conditioner outdoor unit is sent into by each increasing enthalpy branch road, it is achieved air injection enthalpy-increasing after machine system. In the embodiment that Fig. 1 provides, the arrival end of increasing enthalpy pipeline 18 is arranged on described economizer 141 and cuts with air jet system liquid side outlet Only between valve 10, increasing enthalpy pipeline 18 extension, through the low temperature liquid coolant of economizer 141 heat release, saves through throttle part 143 Temperature liquid refrigerants is forced down in stream blood pressure lowering in being, then absorb what the coolant in main refrigerant pipeline 16 discharged when through economizer 141 Heat, evaporation becomes middle pressure gaseous coolant, is sent into the spray of each air-conditioner outdoor unit after entering outdoor machine system by each increasing enthalpy branch road The middle pressure chamber of gas enthalpy-increasing compressor, carries out air injection enthalpy-increasing, simultaneously because the heat in economizer 141 is made winner cold by absorption always The heat of the coolant release in matchmaker's pipeline increases, and produces supercool further, improves the heat exchange efficiency of whole air conditioning system.Throttling Parts 143 are arranged on the pipeline between the arrival end and the described economizer 141 that increase enthalpy pipeline 18, increase enthalpy pipeline to control to enter The coolant quantity of 18, and then control the increasing enthalpy amount of whole air conditioning system.
Further, with reference to Fig. 1 and 2, described economizer 141 is plate type heat exchanger or double pipe heat exchanger, described throttling Parts 143 are electric expansion valve or heating power expansion valve.
The air injection enthalpy-increasing air conditioning system of the present invention, in the embodiment that Fig. 1 and 2 provides, economizer 141 is plate type heat exchanger Or double pipe heat exchanger, in order to select to use plate type heat exchanger or double pipe heat exchanger according to different installation environments;Restriction Part 143 is that electric expansion valve or heating power expansion valve, electric expansion valve or heating power expansion valve are respectively provided with good throttling action, its In, the aperture of electric expansion valve and heating power expansion valve can the degree of superheat as required control.
Further, with reference to Fig. 1 and 2, described air injection enthalpy-increasing air conditioning system includes two the first air-conditioner outdoor units in parallel With the second air-conditioner outdoor unit;
Described first air-conditioner outdoor unit include being sequentially connected in series formation the first air injection enthalpy-increasing compressor 1a of the first pipeline, first Cross valve 2a, the first air cooling heat exchanger 3a, the first outdoor throttle part 4a, the first off-premises station liquid side stop valve 5a, be sequentially connected in series Form the first gas-liquid separator 7a and the first off-premises station gas side stop valve 6a of the first conduit, and be sequentially connected in series formation first Increase the first solenoid valve 15a and the first off-premises station puff prot stop valve 11a of enthalpy branch road;
Described second air-conditioner outdoor unit include being sequentially connected in series formation the second air injection enthalpy-increasing compressor 1b of the second pipeline, second Cross valve 2b, the second air cooling heat exchanger 3b, the second outdoor throttle part 4b, the second off-premises station liquid side stop valve 5b, be sequentially connected in series Form the second gas-liquid separator 7b and the second off-premises station gas side stop valve 6b of the second conduit, and be sequentially connected in series formation second Increase the second solenoid valve 15b and the second off-premises station puff prot stop valve 11b of enthalpy branch road;
Described first pipeline and the second pipeline are connected in described main refrigerant pipeline 16, described first conduit and second Conduit is connected in described main refrigerant pipeline loop 17, and described first increasing enthalpy branch road and second increases enthalpy branch circuit parallel connection and is connected to institute State increasing enthalpy pipeline 18.
The air injection enthalpy-increasing air conditioning system of the present invention, in the embodiment that Fig. 1 and 2 provides, empty including two in parallel first Adjust off-premises station and the second air-conditioner outdoor unit, two the first indoor apparatus of air conditioner in parallel and the second indoor apparatus of air conditioner, implement at other In example, it is also possible to include more air-conditioner outdoor unit and indoor apparatus of air conditioner;
First air-conditioner outdoor unit includes being sequentially connected in series becomes the first gas-liquid separator 7a of refrigerant pipeline, the first off-premises station gas Side stop valve 6a, the first air injection enthalpy-increasing compressor 1a, the first cross valve 2a, the first air cooling heat exchanger 3a, the first outdoor restriction Part 4a and the first off-premises station liquid side stop valve 5a, and be sequentially connected in series and become the first solenoid valve 15a and the increasing enthalpy branch road One off-premises station puff prot stop valve 11a;
Second air-conditioner outdoor unit includes being sequentially connected in series becomes the second gas-liquid separator 7b of refrigerant pipeline, the second off-premises station gas Side stop valve 6b, the second air injection enthalpy-increasing compressor 1b, the second cross valve 2b, the second air cooling heat exchanger 3b, the second outdoor restriction Part 4b and the second off-premises station liquid side stop valve 5b, and be sequentially connected in series and become the second solenoid valve 15b and the increasing enthalpy branch road Two off-premises station puff prot stop valve 11b;
First indoor apparatus of air conditioner includes the indoor throttle part 13a of the first indoor heat exchanger 12a and first of series connection, and second is empty Off-premises station is adjusted to include the indoor throttle part 13b of the second indoor heat exchanger 12b and second of series connection;
First air injection enthalpy-increasing compressor 1a of the first air-conditioner outdoor unit, the first cross valve 2a, the first air cooling heat exchanger 3a, One outdoor throttle part 4a and the first off-premises station liquid side stop valve 5a is sequentially connected in series formation the first pipeline, the first gas-liquid separator 7a The first conduit is formed with the first off-premises station gas side stop valve 6a series connection;
Second air injection enthalpy-increasing compressor 1b of the second air-conditioner outdoor unit, the second cross valve 2b, the second air cooling heat exchanger 3b, Two outdoor throttle part 4b, the second off-premises station liquid side stop valve 5b are sequentially connected in series formation the second pipeline, the second gas-liquid separator 7b The second conduit is formed with the second off-premises station gas side stop valve 6b series connection;
Described first pipeline and the second pipeline are connected in described main refrigerant pipeline 16, described first conduit and second Conduit is connected in described main refrigerant pipeline loop 17, the first indoor apparatus of air conditioner of described parallel connection and the second indoor apparatus of air conditioner One end connect described main refrigerant pipeline 16, the other end connect described main refrigerant pipeline loop 17, constitute complete refrigerant circulation Loop, it is achieved heating and refrigerating function of air conditioning system, described first increasing enthalpy branch road and second increases enthalpy branch circuit parallel connection and is connected to increase enthalpy Pipeline 18, utilizes the economizer 145 in air jet system 14 to press gaseous coolant in producing, enters the middle pressure of air injection enthalpy-increasing compressor Chamber, it is achieved air injection enthalpy-increasing.
Further, described first air cooling heat exchanger 3a and the second air cooling heat exchanger 3b uses water cooling heat exchanger to substitute.
The air injection enthalpy-increasing air conditioning system of the present embodiment, the first air-conditioner outdoor unit uses the first air cooling heat exchanger 3a, and second is empty Adjust off-premises station to use the second air cooling heat exchanger 3b to realize the heat exchange of coolant and external environment condition, but heat or at height at low temperature environment During temperature environment refrigeration, owing to coolant is less with the temperature difference of external environment condition, so heat exchange efficiency is relatively low, in turn result in air conditioning system Energy Efficiency Ratio is relatively low, and water cooling heat exchanger can provide, to air conditioning system, the water source and low-temp low-pressure that temperature is higher at low ambient temperatures Liquid refrigerants carries out heat exchange, it is also possible to provide the gas at the relatively low water source of temperature and High Temperature High Pressure in high temperature environments to air conditioning system State coolant carries out heat exchange, improves the heat exchange efficiency of air conditioning system, and then improves whole air conditioning system under high temperature or low temperature environment Energy Efficiency Ratio.
Further, with reference to Fig. 1 and 2, described air injection enthalpy-increasing air conditioning system also includes controller (not shown), the first temperature Sensor 19 and the second temperature sensor 20,
Described first temperature sensor 19 is arranged between economizer 141 and throttle part 143;
Described second temperature sensor 20 is arranged between economizer 141 and air jet system gas side outlet stop valve 9;
The input of described controller connects described first temperature sensor 19 and the second temperature sensor 20, and outfan is even Connect throttle part 143.
The air injection enthalpy-increasing air conditioning system of the present embodiment, also includes controller (not shown), the first temperature sensor 19 and Two temperature sensors 20;First temperature sensor 19 is arranged between economizer 141 and throttle part 143, is used for gathering increasing enthalpy The inlet temperature of pipeline 18 arrival end, and this inlet temperature is sent to described controller;Second temperature sensor 20 is arranged at Between economizer 141 and air jet system gas side outlet stop valve 9, for gathering the outlet temperature increasing enthalpy pipeline 18 port of export, and This outlet temperature is sent to described controller;The input of described controller connects described first temperature sensor 19 and second Temperature sensor 20, outfan connecting joint stream unit 143, for calculating degree of superheat D of jet, and according to described degree of superheat D Control the aperture of throttle part 143.Described degree of superheat D=outlet temperature-inlet temperature, when 0 DEG C of < D < 3 DEG C, restriction The aperture of part 143 is-8;When 3 DEG C≤D < 5 DEG C, the aperture of throttle part 143 is-4;When 5 DEG C≤D < 8 DEG C, restriction The aperture of part 143 keeps constant;When 8 DEG C≤D < 10 DEG C, the aperture of throttle part 143 is+4;When D >=10 DEG C, restriction The aperture of part 143 is+8.
The work process of the air injection enthalpy-increasing air conditioning system of the present invention is as follows:
During air conditioning system refrigerating operaton, coolant quilt in the air injection enthalpy-increasing compressor of air-conditioner outdoor unit A and B in parallel respectively The gaseous coolant of boil down to High Temperature High Pressure, through cross valve, enters air cooling heat exchanger and carries out heat exchange, external environment release heat Amount, a part of gaseous coolant becomes liquid refrigerants, is entered by main refrigerant pipeline 16 after outdoor throttle part reducing pressure by regulating flow Air jet system 14, then, a part of coolant enters and increases enthalpy pipeline 18, throttles into middle pressure liquid refrigerants through throttle part 143, enters Entering economizer 141 and absorb the heat of coolant expansion release, evaporation becomes middle pressure gaseous coolant, enters air conditioning chamber along increasing enthalpy pipeline 18 The increasing enthalpy branch road of outer machine, and then from the jet of air injection enthalpy-increasing compressor enters, press chamber;Another part coolant then enters economy Device 141 discharges heat further, then enters into indoor heat exchanger 12 by main refrigerant pipeline 16, and heat absorption flashes to low-temp low-pressure Gaseous coolant, then return in air-conditioner outdoor unit through main refrigerant pipeline loop 17, through cross valve enter gas-liquid separator carry out Gas-liquid separation, isolated low-temp low-pressure gaseous coolant returns to air injection enthalpy-increasing compressor, completes a kind of refrigeration cycle.
During air conditioning system heating operation, coolant quilt in the air injection enthalpy-increasing compressor of air-conditioner outdoor unit A and B in parallel respectively The gaseous coolant of boil down to High Temperature High Pressure, the pipeline connected through cross valve and off-premises station gas side stop valve converges to main refrigerant pipe Loop, road 17, enters indoor apparatus of air conditioner, and through indoor heat exchanger to indoor environment heat release, condensed coolant is through indoor throttle part Carrying out reducing pressure by regulating flow, then pass through air jet system liquid side outlet stop valve 10 and enter air jet system 14, then, a part of coolant enters Enter to increase enthalpy pipeline 18, throttle into middle pressure liquid refrigerants through throttle part 143, enter economizer 141 and absorb coolant expansion release Heat, evaporation becomes middle pressure gaseous coolant, along increasing enthalpy pipeline 18 and enter the increasing enthalpy branch road of air-conditioner outdoor unit, and then increases from jet The jet of enthalpy compressor presses chamber in entering;Another part coolant the most directly by air jet system liquid side-entrance stop valve 8, enters The outdoor throttle part reducing pressure by regulating flow entered to air-conditioner outdoor unit becomes the liquid refrigerants of low-temp low-pressure, subsequently enters air cooling heat exchanger and inhales Receiving the heat of external environment condition, evaporation becomes the gaseous coolant of low-temp low-pressure, flows into gas-liquid separator again by cross valve, returns to Air injection enthalpy-increasing compressor, completes once to heat circulation.
The air injection enthalpy-increasing air conditioning system of the present invention, by main refrigerant pipeline 16 and main refrigerant pipeline loop 17 by air conditioning chamber The air-conditioner outdoor unit of machine and at least two parallel connection connects, and enters the air jet system on the coolant main refrigerant pipeline of absorption increasing enthalpy pipeline The heat of vaporization of interior generation presses gaseous coolant in becoming, and enters the air injection enthalpy-increasing compressor of each air-conditioner outdoor unit, it is achieved jet increases Enthalpy, it is not necessary to be separately provided economizer and the expansion valve realizing air injection enthalpy-increasing for each air-conditioner outdoor unit, solve multi-gang air-conditioner System, when off-premises station parallel connection, sets up the technical problem of economizer, expansion valve, and air jet system is flexible for installation, greatly reduce The cost of system, it is to avoid the wasting of resources.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every at this Under the inventive concept of invention, utilize the equivalent structure transformation that description of the invention and accompanying drawing content are made, or directly/indirectly use The technical field relevant at other is included in the scope of patent protection of the present invention.

Claims (8)

1. an air injection enthalpy-increasing air conditioning system, it is characterised in that include indoor apparatus of air conditioner, outside the air conditioning chamber that at least two is in parallel Machine, and connect air-conditioner outdoor unit and the main refrigerant pipeline of indoor apparatus of air conditioner and main refrigerant pipeline loop, each air-conditioner outdoor unit Including air injection enthalpy-increasing compressor;
Described air injection enthalpy-increasing air conditioning system also includes air jet system, connects the increasing enthalpy of described air jet system and each air-conditioner outdoor unit Pipeline, described air jet system is arranged at the arbitrary node of described main refrigerant pipeline, enters the coolant described spray of absorption increasing enthalpy pipeline Heat of vaporization in device of air presses gaseous coolant in becoming, and flows into the air injection enthalpy-increasing compressor of each air-conditioner outdoor unit.
Air injection enthalpy-increasing air conditioning system the most according to claim 1, it is characterised in that each air-conditioner outdoor unit also includes an increasing Enthalpy branch road, one end of described increasing enthalpy branch road connects air injection enthalpy-increasing compressor, and the other end connects described increasing enthalpy pipeline, and every increases enthalpy and props up Road is provided with a solenoid valve, controls to increase the opening and closing of enthalpy branch road.
Air injection enthalpy-increasing air conditioning system the most according to claim 1 and 2, it is characterised in that described air jet system and air conditioning chamber Main refrigerant pipeline between outer machine is provided with air jet system liquid side-entrance stop valve, between described air jet system and indoor apparatus of air conditioner Main refrigerant pipeline be provided with air jet system liquid side outlet stop valve, the increasing enthalpy pipe between described air jet system and air-conditioner outdoor unit Road is provided with air jet system gas side outlet stop valve.
Air injection enthalpy-increasing air conditioning system the most according to claim 3, it is characterised in that described air jet system includes being arranged at institute Stating the economizer of main refrigerant pipeline, and be arranged at the throttle part of described increasing enthalpy pipeline, described increasing enthalpy pipeline runs through described economy Device, described increasing enthalpy pipeline includes arrival end, this arrival end be arranged at described economizer and air jet system liquid side-entrance stop valve it Between, or be arranged between described economizer and air jet system liquid side outlet stop valve, described throttle part is arranged at described increasing Between arrival end and the described economizer of enthalpy pipeline.
Air injection enthalpy-increasing air conditioning system the most according to claim 4, it is characterised in that described economizer be plate type heat exchanger or Double pipe heat exchanger, described throttle part is electric expansion valve or heating power expansion valve.
Air injection enthalpy-increasing air conditioning system the most according to claim 1, it is characterised in that this air injection enthalpy-increasing air conditioning system includes two First air-conditioner outdoor unit of individual parallel connection and the second air-conditioner outdoor unit;
Described first air-conditioner outdoor unit includes being sequentially connected in series formation the first air injection enthalpy-increasing compressor of the first pipeline, the first four-way Valve, the first air cooling heat exchanger, the first outdoor throttle part, the first off-premises station liquid side stop valve, be sequentially connected in series formation the first pipeline First gas-liquid separator in loop and the first off-premises station gas side stop valve, and it is sequentially connected in series the first spray forming the first increasing enthalpy branch road Pneumoelectric magnet valve and the first off-premises station puff prot stop valve;
Described second air-conditioner outdoor unit includes being sequentially connected in series formation the second air injection enthalpy-increasing compressor of the second pipeline, the second four-way Valve, the second air cooling heat exchanger, the second outdoor throttle part, the second off-premises station liquid side stop valve, be sequentially connected in series formation the second pipeline Second gas-liquid separator in loop and the second off-premises station gas side stop valve, and it is sequentially connected in series the second spray forming the second increasing enthalpy branch road Pneumoelectric magnet valve and the second off-premises station puff prot stop valve;
Described first pipeline and the second pipeline are connected in described main refrigerant pipeline, and described first conduit and the second pipeline return Road is connected in described main refrigerant pipeline loop, and described first increasing enthalpy branch road and second increases enthalpy branch circuit parallel connection and is connected to described increasing enthalpy pipe Road.
Air injection enthalpy-increasing air conditioning system the most according to claim 6, it is characterised in that described first air cooling heat exchanger and second Air cooling heat exchanger uses water cooling heat exchanger to substitute.
Air injection enthalpy-increasing air conditioning system the most according to claim 4, it is characterised in that described air injection enthalpy-increasing air conditioning system is also wrapped Include controller, the first temperature sensor and the second temperature sensor,
Described first temperature sensor is arranged between economizer and throttle part;
Described second temperature sensor is arranged between economizer and air jet system gas side outlet stop valve;
The input of described controller connects described first temperature sensor and the second temperature sensor, and outfan connects restriction Part.
CN201610698062.3A 2016-08-19 2016-08-19 Air injection enthalpy-increasing air conditioning system Pending CN106288028A (en)

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CN107477933A (en) * 2017-09-18 2017-12-15 广东美的暖通设备有限公司 Control method, system and the computer-readable recording medium of multi-connected air conditioner
CN108036551A (en) * 2017-12-18 2018-05-15 广东美的暖通设备有限公司 Switching device and there is its multi-gang air-conditioner

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CN203657295U (en) * 2013-12-05 2014-06-18 广东芬尼克兹节能设备有限公司 Multi-source adjusting and controlling ultra-low temperature heat pump
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* Cited by examiner, † Cited by third party
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CN107477933A (en) * 2017-09-18 2017-12-15 广东美的暖通设备有限公司 Control method, system and the computer-readable recording medium of multi-connected air conditioner
CN108036551A (en) * 2017-12-18 2018-05-15 广东美的暖通设备有限公司 Switching device and there is its multi-gang air-conditioner

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