CN205939467U - Multi -split air conditioning system - Google Patents

Multi -split air conditioning system Download PDF

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Publication number
CN205939467U
CN205939467U CN201620911594.6U CN201620911594U CN205939467U CN 205939467 U CN205939467 U CN 205939467U CN 201620911594 U CN201620911594 U CN 201620911594U CN 205939467 U CN205939467 U CN 205939467U
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China
Prior art keywords
air
indoor
conditioning
coolant
valve
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CN201620911594.6U
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Inventor
卜其辉
许永锋
梁伯启
李宏伟
董世龙
吴晓鸿
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Abstract

The utility model provides a multi -split air conditioning system, machine in an air condensing units and two at least parallelly connected air conditioning, air condensing units includes enhanced vapor injection compressor, the cross valve, water source cooling unit, refrigerant and water heat transfer unit, off -premises station liquid side stop valve, off -premises station gas side stop valve and economic ware, utilize the cooling circuit of water source cooling unit and refrigerant and water heat transfer unit constitution, heating, low temperature environment provide the water source of higher temperature when, refrigerating, high temperature environment provide the water source of lower temperature when, carry out the heat transfer with the refrigerant among the air conditioning system, multi -split air conditioning system has been solved under low temperature or high temperature environment, the technical problem that heat exchange efficiency is low. The utility model discloses a multi -split air conditioning system, simple structure had both improved system efficiency, can reach energy -concerving and environment -protective purpose again.

Description

Multi-online air-conditioning system
Technical field
This utility model is related to steam compression type refrigeration field of air conditioning, more particularly, to a kind of multi-online air-conditioning system.
Background technology
In order to lift multi-online air-conditioning system heating effect at low ambient temperatures, how to be carried by the way of two-stage compression High heating capacity, the air injection enthalpy-increasing compressor with air injection enthalpy-increasing is equivalent to a two-stage compression system, can reach raising and heat The effect of effect.But, current air conditioning system carries out heat exchange using air cooling heat exchanger and external environment condition, mostly in low temperature or height Under warm environment, heat exchange efficiency is relatively low.
Utility model content
Main purpose of the present utility model is to provide a kind of multi-online air-conditioning system it is intended to solve multi-online air-conditioning system Under low temperature or hot environment, the low technical problem of heat exchange efficiency.
For achieving the above object, the utility model proposes a kind of multi-online air-conditioning system, including an air-conditioner outdoor unit and The indoor apparatus of air conditioner of at least two parallel connections, described air-conditioner outdoor unit includes air injection enthalpy-increasing compressor, cross valve, water source cooling list Unit, coolant and water heat exchange unit, off-premises station liquid side stop valve, off-premises station gas side stop valve and economizer;
The arrival end of described coolant and water heat exchange unit connects cross valve, and the port of export connects off-premises station liquid side stop valve, institute State water source cooling unit and constitute a cooling circuit with coolant and water heat exchange unit, carry out heat exchange with coolant;
Described economizer is arranged at the pipeline between coolant and water heat exchange unit and off-premises station liquid side stop valve, described jet It is additionally provided with an increasing enthalpy pipeline, described increasing enthalpy pipeline passes through described economizer between enthalpy-increasing compressor and off-premises station liquid side stop valve Connect air injection enthalpy-increasing compressor;
Described off-premises station gas side stop valve one end connects cross valve, and the other end passes through described indoor apparatus of air conditioner in parallel respectively Connect off-premises station liquid side stop valve.
Further, this multi-online air-conditioning system also includes gas-liquid separator, and the arrival end of this gas-liquid separator connects four Port valve, the port of export connects air injection enthalpy-increasing compressor.
Further, this multi-online air-conditioning system includes the first indoor apparatus of air conditioner and second indoor apparatus of air conditioner of two parallel connections,
Described first indoor apparatus of air conditioner includes the first indoor heat exchanger and the first indoor set throttle part connected, and described the Two indoor apparatus of air conditioner include the second indoor heat exchanger and the second indoor set throttle part connected;
One end of described first indoor heat exchanger and the second indoor heat exchanger connects off-premises station gas side stop valve respectively, another The first indoor set throttle part is passed through at end respectively and the second indoor set throttle part connects off-premises station liquid side stop valve.
Further, it is provided with the first electronic throttle portion between the port of export of described coolant and water heat exchange unit and economizer Part, is provided with the second electronic throttle part between the arrival end of described increasing enthalpy pipeline and economizer.
Further, described first electronic throttle part and the second electronic throttle part are respectively electric expansion valve or heating power Expansion valve.
Further, described air-conditioner outdoor unit also includes controller, the first temperature sensor and second temperature sensor;
Described first temperature sensor is arranged between economizer and the second electronic throttle part;
Described second temperature sensor is arranged between economizer and air injection enthalpy-increasing compressor;
The input of described controller connects described first temperature sensor and second temperature sensor, and outfan connects the Two electronic throttle parts.
Further, the pipeline between described air injection enthalpy-increasing compressor and cross valve is provided with high pressure sensor.
Further, the pipeline between described air injection enthalpy-increasing compressor and gas-liquid separator is provided with low pressure sensor.
Multi-online air-conditioning system of the present utility model, cold with what coolant and water heat exchange unit were constituted using water source cooling unit But loop, provides the water source of higher temperature when low temperature environment heats, and provides the water source of lower temperature in high temperature environment refrigerating, Carry out heat exchange with the coolant in air conditioning system, solve multi-online air-conditioning system under low temperature or hot environment, heat exchange efficiency is low Technical problem.Multi-online air-conditioning system of the present utility model, structure is simple, had both improve system effectiveness, and can reach energy-conservation again The purpose of environmental protection.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the structural representation of this utility model multi-online air-conditioning system one embodiment.
Drawing reference numeral explanation:
Label Title Label Title
1 Air injection enthalpy-increasing compressor 7 Gas-liquid separator
1a Air vent 8 Off-premises station liquid side stop valve
1b Gas returning port 9 Off-premises station gas side stop valve
1c Puff prot 10 Economizer
2 Cross valve 11 First indoor heat exchanger
2a First port 12 First indoor set throttle part
2b Second port 13 Second indoor heat exchanger
2c 3rd port 14 Second indoor set throttle part
2d 4th port 15 High pressure sensor
3 Water source cooling unit 16 Low pressure sensor
4 Coolant and water heat exchange unit 17 First temperature sensor
5 First electronic throttle part 18 Second temperature sensor
6 Second electronic throttle part 19 Increasing enthalpy pipeline
The realization of this utility model purpose, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not paying creative work premise Lower obtained every other embodiment, broadly falls into the scope of this utility model protection.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in this utility model embodiment It is only used for explaining the relative position relation between each part, motion conditions etc. under a certain particular pose (as shown in drawings), such as When really this particular pose changes, then directionality instruction also correspondingly changes therewith.
In addition, the description being related to " first ", " second " etc. in this utility model is only used for describing purpose, and it is not understood that For indicating or implying its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", The feature of " second " can be expressed or implicitly include at least one this feature.In addition, the technical side between each embodiment Case can be combined with each other, but must be capable of by those of ordinary skill in the art based on, when the combination of technical scheme Will be understood that the combination of this technical scheme does not exist when appearance is conflicting or cannot realize, also do not require in this utility model Protection domain within.
With reference to Fig. 1, in this embodiment, this multi-online air-conditioning system, including an air-conditioner outdoor unit and at least two parallel connections Indoor apparatus of air conditioner, described air-conditioner outdoor unit includes air injection enthalpy-increasing compressor 1, cross valve 2, water source cooling unit 3, coolant and water Heat exchange unit 4, off-premises station liquid side stop valve 8, off-premises station gas side stop valve 9 and economizer 10;
The arrival end of described coolant and water heat exchange unit 4 connects cross valve 2, and the port of export connects off-premises station liquid side stop valve 8, Described water source cooling unit 3 constitutes a cooling circuit with coolant and water heat exchange unit 4, carries out heat exchange with coolant;
Described economizer 10 is arranged at the pipeline between coolant and water heat exchange unit 4 and off-premises station liquid side stop valve 8, described It is additionally provided with an increasing enthalpy pipeline 19, described increasing enthalpy pipeline 19 passes through between air injection enthalpy-increasing compressor 1 and off-premises station liquid side stop valve 8 Described economizer 10 connects air injection enthalpy-increasing compressor 1;
Described off-premises station gas side stop valve 9 one end connects cross valve 2, and it is indoor that the other end passes through described air-conditioning in parallel respectively Machine connects off-premises station liquid side stop valve 8.
The multi-online air-conditioning system of the present embodiment, including an air-conditioner outdoor unit and two in parallel indoor apparatus of air conditioner, In other embodiment, more indoor apparatus of air conditioner can also be included, described air-conditioner outdoor unit include an air injection enthalpy-increasing compressor 1, Cross valve 2, water source cooling unit 3, coolant and water heat exchange unit 4, off-premises station liquid side stop valve 8, off-premises station gas side stop valve 9 and Economizer 10.
Described air injection enthalpy-increasing compressor 1 includes an air vent 1a, for the High Temperature High Pressure that will be produced by compressed action Gaseous coolant exports to heat exchanger;Including a gas returning port 1b, for reclaiming the low-temp low-pressure becoming in heat exchanger interior suction thermal evaporation Gaseous coolant;Also include a puff prot 1c, absorb heat under economizer, heat exchanger or other thermal environments for recovery in flashing to The gaseous coolant of pressure.
Described cross valve 2 includes first port 2a, second port 2b, the 3rd port 2c and the 4th port 2d, connects respectively Air injection enthalpy-increasing compressor 1, outdoor heat exchanger, indoor heat exchanger and gas-liquid separator 7, beat in different time points to open or close Close, complete to freeze or heat circulation.
Described coolant and water heat exchange unit 4 are the outdoor heat exchanger of air conditioning system, in this embodiment for a kind of water-cooled heat exchange Device, its arrival end connects second port 2b of cross valve 2, and the port of export connects off-premises station liquid side stop valve 8, and the cooling of described water source is single Unit 3 is the Cooling and Heat Source of coolant and water heat exchange unit 4, is typically come by the heat exchange coil being placed in subsoil water, surface water or soil etc. There is provided it is also possible to directly surface water is supplied to air conditioning system main frame using water pump;When air conditioning system is freezed, coolant and water change , as outdoor condenser, external environment heat release, water source cooling unit 3 is in cooling circuit to coolant and water heat exchange for hot cell 4 Unit 4 provides temperature to be less than the water source of ambient temperature, in order to gaseous coolant and coolant and the water heat exchange list of High Temperature High Pressure Unit 4 carries out heat exchange, is condensed into the liquid refrigerants of High Temperature High Pressure;When air conditioning system heats, coolant and water heat exchange unit 4 are as room Outer vaporizer, external environment absorbs heat, and water source cooling unit 3 provides to coolant and water heat exchange unit 4 in cooling circuit Temperature is higher than the water source of ambient temperature, and liquid refrigerants and coolant and water heat exchange unit 4 in order to low-temp low-pressure are changed Heat, flashes to the gaseous coolant of low-temp low-pressure;Adopting air cooling heat exchanger existing most of air conditioning system more, and air-cooled for improving The outdoor fan of heat exchanger heat exchange efficiency, but heat exchange efficiency under low temperature environment and hot environment for this kind of cooperation is relatively low, because This, the air conditioning system of the present embodiment, using the substantially coolant of water cooling heat exchanger and water heat exchange unit 4, is equipped with and is changed with coolant and water Hot cell 4 constitutes the water source cooling unit 3 of a cooling circuit, so as water-cooled heat exchange unit 3 pass through coolant and water heat exchange unit 4 with The coolant of air conditioning system carries out heat exchange, it is possible to increase whole Energy Efficiency Ratio under high temperature or low temperature environment for the air conditioning system.
Described economizer 10, similar to an Intermediate Heat Exchanger, is arranged at coolant and water heat exchange unit 4 and off-premises station liquid side Pipeline between stop valve 8, the high-pressure liquid coolant from coolant and water heat exchange unit 4 is divided into two parts, a part is passed through Throttling cools down in the way of heat expands further, and subsequently into indoor heat exchanger refrigeration, the uncooled gaseous state of another part is cold Matchmaker passes through the increasing enthalpy pipeline 19 of setting between economizer 10 and off-premises station liquid side stop valve 8, enters again by economizer 10 Air injection enthalpy-increasing compressor 1 proceeds to compress, and becomes middle pressure gaseous coolant to absorb the heat expanding in economizer 10, reduces spray The compressed action of gas enthalpy-increasing compressor 1, realizes air injection enthalpy-increasing, improves capacity and the efficiency of air conditioning system.
One end of described off-premises station gas side stop valve 9 connects the 3rd port 2c of cross valve 2, and the other end is respectively in parallel Two indoor apparatus of air conditioner connect off-premises station liquid side stop valves, the air conditioning system of the present embodiment is passed through in off-premises station gas side stop valve The heat exchanger of the indoor apparatus of air conditioner between 9 and off-premises station liquid side stop valve 8 is realized heating and freezing.
Further, with reference to Fig. 1, this multi-online air-conditioning system also includes gas-liquid separator 7, the entering of this gas-liquid separator 7 Mouth end connects cross valve 2, and the port of export connects air injection enthalpy-increasing compressor 1.
The multi-online air-conditioning system of the present embodiment, also includes gas-liquid separator 7, and the arrival end of this gas-liquid separator 7 connects 4th port 2d of cross valve 2, the port of export connects the gas returning port 1b of air injection enthalpy-increasing compressor 1, carry out heating in air conditioning system and In refrigerative circle system, the coolant that will return to air injection enthalpy-increasing compressor 1 is carried out with the separation of gaseous coolant and liquid refrigerants, prevents Liquid refrigerants cooled via return air mouth 1b enters air injection enthalpy-increasing compressor 1, causes liquid refrigerants liquid to amass, and then damages compressor, improves The functional reliability of this outdoor unit of air-conditioning system.
Further, with reference to Fig. 1, this multi-online air-conditioning system includes the first indoor apparatus of air conditioner and second air-conditioning of two parallel connections Indoor set,
Described first indoor apparatus of air conditioner includes the first indoor heat exchanger 11 and the first indoor set throttle part 12 connected, institute State the second indoor heat exchanger 13 and the second indoor set throttle part 14 that the second indoor apparatus of air conditioner includes connecting;
One end of described first indoor heat exchanger 11 and the second indoor heat exchanger 13 connects off-premises station gas side stop valve respectively 9, the other end passes through the first indoor set throttle part 12 respectively and the second indoor set throttle part 14 connects the cut-off of off-premises station liquid side Valve 8.
The multi-online air-conditioning system of the present embodiment, indoor including two the first indoor apparatus of air conditioner in parallel and the second air-conditioning Machine, the first indoor apparatus of air conditioner includes the first indoor heat exchanger 11 and the first indoor set throttle part 12 connected, the second air conditioning chamber Interior machine includes the second indoor heat exchanger 13 and the second indoor set throttle part 14, the first indoor heat exchanger 11 and the second Room connected One end of interior heat exchanger 13 connects off-premises station gas side stop valve 9 respectively, and the other end passes through the first indoor set throttle part 12 respectively Connect off-premises station liquid side stop valve 8 with the second indoor set throttle part 14, to pass through the when air conditioning system heats or freezes One indoor heat exchanger 11 and the second indoor heat exchanger 13 are to indoor environment heat release or heat absorption.
Further, with reference to Fig. 1, between the port of export of described coolant and water heat exchange unit 4 and economizer 10, it is provided with first Electronic throttle part 5, is provided with the second electronic throttle part 6 between the arrival end of described increasing enthalpy pipeline 19 and economizer 10.
The multi-online air-conditioning system of the present embodiment, described coolant and water heat exchange unit 4 the port of export and economizer 10 it Between be provided with the first electronic throttle part 5, adjust the flow of coolant and pressure in refrigerant pipeline, increasing enthalpy pipeline 19 arrival end with It is provided with the second electronic throttle part 6, the arrival end of increasing enthalpy pipeline 19 is arranged on refrigerant pipeline near outdoor between economizer 10 The node of machine liquid side stop valve 8, adjusts the flow of coolant and pressure in increasing enthalpy pipeline 19, to meet the fast-refrigerating of air conditioning system With heat.
Further, with reference to Fig. 1, described first electronic throttle part 5 and the second electronic throttle part 6 respectively electronics are swollen Swollen valve or heating power expansion valve.
In the present embodiment, described first electronic throttle part 5 and the second electronic throttle part 6 be respectively heating power expansion valve and Electric expansion valve, in other embodiments, the first electronic throttle part 5 can also be electric expansion valve, the second electronic throttle portion Part 6 can also be heating power expansion valve.Electric expansion valve or heating power expansion valve are respectively provided with good throttling action, and wherein, electronics is swollen The aperture of swollen valve and heating power expansion valve can the degree of superheat as needed control.
Further, with reference to Fig. 1, described air-conditioner outdoor unit also includes controller (not shown), the first temperature sensor 17 With second temperature sensor 18;
Described first temperature sensor 17 is arranged between economizer 10 and the second electronic throttle part 6;
Described second temperature sensor 18 is arranged between economizer 10 and air injection enthalpy-increasing compressor 1;
The input of described controller connects described first temperature sensor 17 and second temperature sensor 18, and outfan is even Connect the second electronic throttle part 6.
The multi-online air-conditioning system of the present embodiment, described air-conditioner outdoor unit also includes controller, the first temperature sensor 17 With second temperature sensor 18;First temperature sensor 17 is arranged between economizer 10 and the second electronic throttle part 6, is used for The inlet temperature of collection increasing enthalpy pipeline 19 arrival end, and this injection inlet temperature is sent to described controller;Described second temperature Degree sensor 18 is arranged between economizer 10 and the puff prot 1c of air injection enthalpy-increasing compressor 1, goes out for gathering increasing enthalpy pipeline 19 The outlet temperature at mouth end, and this jet exit temperature is sent to described controller;The input of described controller connects described First temperature sensor 17 and second temperature sensor 18, outfan connects the second electronic throttle part 6, for calculating jet Degree of superheat D, and according to described degree of superheat D control the second electronic throttle part 6 aperture.Described degree of superheat D=outlet temperature Degree-inlet temperature, in 3 DEG C of 0 DEG C of < D <, the aperture of the second electronic throttle part 6 is -8;In 5 DEG C of 3 DEG C≤D <, second The aperture of electronic throttle part 6 is -4;In 8 DEG C of 5 DEG C≤D <, the aperture of the second electronic throttle part 6 keeps constant;At 8 DEG C During 10 DEG C of≤D <, the aperture of the second electronic throttle part 6 is+4;When D >=10 DEG C, the aperture of the second electronic throttle part 6 is +8.
Further, with reference to Fig. 1, the pipeline between described air injection enthalpy-increasing compressor 1 and cross valve 2 is provided with high pressure sensing Device 15, the pipeline between described air injection enthalpy-increasing compressor 1 and gas-liquid separator 7 is provided with low pressure sensor 16.
The multi-online air-conditioning system of the present embodiment, in the air vent 1a of air injection enthalpy-increasing compressor 1 and the first end of cross valve 2 It is additionally provided with a high pressure sensor 15, to test the high-pressure gaseous refrigerant of air injection enthalpy-increasing compressor 1 discharge on the pipeline that mouth 2a connects Pressure;The arbitrary node of the pipeline connecting air injection enthalpy-increasing compressor 1 in the port of export of gas-liquid separator 7 is additionally provided with a low pressure and passes Sensor, returns to the pressure of the low-pressure gaseous coolant of air injection enthalpy-increasing compressor 1 with real-time testing;And then adjust air injection enthalpy-increasing pressure at any time The compressed action of contracting machine 1, while ensureing that air conditioning system heats or freezes, reducing energy consumption, improves efficiency.
The work process of the multi-online air-conditioning system of the present embodiment is as follows:
During air conditioning system refrigerating operaton, coolant is compressed to the gaseous coolant of High Temperature High Pressure in air injection enthalpy-increasing compressor 1, Through cross valve 2, enter coolant and water heat exchange unit 4 carries out heat exchange, external environment discharges heat, a part of gaseous coolant becomes Become liquid refrigerants, enter economizer 10 through the first electronic throttle part 5, in economizer 10, coolant continues to put by expansion Heat, and then cool down further, improve degree of supercooling, then, a part of coolant enters increasing enthalpy pipeline 19, through the second electronic throttle portion Part 6 throttles into middle pressure liquid refrigerants, is again introduced into economizer 10 and absorbs the heat that coolant expands release, evaporates state of calming the anger in becoming Coolant, enters middle pressure chamber along increasing enthalpy pipeline 19 from the jet 1c of air injection enthalpy-increasing compressor 1;Another part coolant is from off-premises station liquid Side stop valve 8 flow to the air-conditioner outdoor unit of parallel connection, saves through the first indoor set throttle part 12 and the second indoor set throttle part 14 The first indoor heat exchanger 11 and the second indoor heat exchanger 13 is respectively enterd, the gaseous state that heat absorption flashes to low-temp low-pressure is cold after stream blood pressure lowering Matchmaker, then returns in air-conditioner outdoor unit through off-premises station gas side stop valve 9, carries out gas-liquid through cross valve 2 entrance gas-liquid separator 7 and divides From the gas returning port 1b through air injection enthalpy-increasing compressor 1 for the low-temp low-pressure gaseous coolant isolated returns to air injection enthalpy-increasing compressor 1, complete Become a kind of refrigeration cycle.
During air conditioning system heating operation, coolant is compressed to the gaseous coolant of High Temperature High Pressure in air injection enthalpy-increasing compressor 1, The pipeline connecting off-premises station gas side stop valve 9 through cross valve 2 enters indoor apparatus of air conditioner in parallel, respectively through the first indoor heat exchange , to indoor environment heat release, condensed coolant is respectively through the first indoor set throttle part 12 He for device 11 and the second indoor heat exchanger 13 Second indoor set throttle part 14 carries out reducing pressure by regulating flow, then passes through off-premises station liquid side stop valve 8 and enters air-conditioner outdoor unit, so Afterwards, a part of coolant enters increasing enthalpy pipeline 19, throttles into middle pressure liquid refrigerants through the second electronic throttle part 6, enters economical Device 10 absorbs the heat that coolant expands release, and evaporation becomes middle pressure gaseous coolant, along increasing enthalpy pipeline 19 from air injection enthalpy-increasing compressor 1 Jet 1c enter middle pressure chamber;Another part coolant then enters economizer 10 and discharges heat further, then passes through the first electricity Sub- throttle part 5 reducing pressure by regulating flow becomes the liquid refrigerants of low-temp low-pressure, subsequently enters coolant and water heat exchange unit 4 absorbs external environment condition Heat, evaporation becomes the gaseous coolant of low-temp low-pressure, flows into gas-liquid separator 7 again by cross valve 2, return to air injection enthalpy-increasing Compressor 1, completes once to heat circulation.
Multi-online air-conditioning system of the present utility model, is constituted using water source cooling unit 3 and coolant and water heat exchange unit 4 Cooling circuit, provides the water source of higher temperature when low temperature environment heats, and provides the water of lower temperature in high temperature environment refrigerating Coolant in source, with air conditioning system carries out heat exchange, solves multi-online air-conditioning system under low temperature or hot environment, heat exchange efficiency Low technical problem.Multi-online air-conditioning system of the present utility model, structure is simple, had both improve system effectiveness, and can reach section again The purpose of energy environmental protection.
The foregoing is only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, Every equivalent structure under utility model of the present utility model is conceived, made using this utility model description and accompanying drawing content Conversion, or directly/be indirectly used in other related technical fields and be included in scope of patent protection of the present utility model.

Claims (8)

1. a kind of multi-online air-conditioning system is it is characterised in that include the air conditioning chamber of an air-conditioner outdoor unit and at least two parallel connections Interior machine, described air-conditioner outdoor unit includes air injection enthalpy-increasing compressor, cross valve, water source cooling unit, coolant and water heat exchange unit, room Outer machine liquid side stop valve, off-premises station gas side stop valve and economizer;
The arrival end of described coolant and water heat exchange unit connects cross valve, and the port of export connects off-premises station liquid side stop valve, described water Source cooling unit constitutes a cooling circuit with coolant and water heat exchange unit, carries out heat exchange with coolant;
Described economizer is arranged at the pipeline between coolant and water heat exchange unit and off-premises station liquid side stop valve, described air injection enthalpy-increasing It is additionally provided with an increasing enthalpy pipeline, described increasing enthalpy pipeline passes through described economizer to connect between compressor and off-premises station liquid side stop valve Air injection enthalpy-increasing compressor;
Described off-premises station gas side stop valve one end connects cross valve, and the other end passes through described indoor apparatus of air conditioner in parallel respectively and connects Off-premises station liquid side stop valve.
2. multi-online air-conditioning system according to claim 1 is it is characterised in that this multi-online air-conditioning system also includes gas-liquid Separator, the arrival end of this gas-liquid separator connects cross valve, and the port of export connects air injection enthalpy-increasing compressor.
3. multi-online air-conditioning system according to claim 1 is it is characterised in that this multi-online air-conditioning system includes two parallel connections The first indoor apparatus of air conditioner and the second indoor apparatus of air conditioner,
Described first indoor apparatus of air conditioner includes the first indoor heat exchanger and the first indoor set throttle part connected, and described second is empty Indoor set is adjusted to include the second indoor heat exchanger and the second indoor set throttle part connected;
One end of described first indoor heat exchanger and the second indoor heat exchanger connects off-premises station gas side stop valve respectively, and the other end divides Tong Guo not the first indoor set throttle part and the second indoor set throttle part connection off-premises station liquid side stop valve.
4. multi-online air-conditioning system according to claim 1 is it is characterised in that the outlet of described coolant and water heat exchange unit It is provided with the first electronic throttle part between end and economizer, between the arrival end of described increasing enthalpy pipeline and economizer, be provided with the second electricity Sub- throttle part.
5. multi-online air-conditioning system according to claim 4 is it is characterised in that described first electronic throttle part and second Electronic throttle part is respectively electric expansion valve or heating power expansion valve.
6. multi-online air-conditioning system according to claim 5 is it is characterised in that described air-conditioner outdoor unit also includes controlling Device, the first temperature sensor and second temperature sensor;
Described first temperature sensor is arranged between economizer and the second electronic throttle part;
Described second temperature sensor is arranged between economizer and air injection enthalpy-increasing compressor;
The input of described controller connects described first temperature sensor and second temperature sensor, and outfan connects the second electricity Sub- throttle part.
7. multi-online air-conditioning system according to claim 1 is it is characterised in that described air injection enthalpy-increasing compressor and cross valve Between pipeline be provided with high pressure sensor.
8. multi-online air-conditioning system according to claim 1 is it is characterised in that described air injection enthalpy-increasing compressor is divided with gas-liquid Pipeline between device is provided with low pressure sensor.
CN201620911594.6U 2016-08-19 2016-08-19 Multi -split air conditioning system Active CN205939467U (en)

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CN109458683A (en) * 2018-10-16 2019-03-12 宁波工程学院 Dry type radiant heat pump and modular point of family air conditioner integrated machine and its control method
CN109915988A (en) * 2019-02-19 2019-06-21 广东美的暖通设备有限公司 The control method and device of multi-line system liquid impact prevention
CN111595002A (en) * 2020-05-18 2020-08-28 广东美的暖通设备有限公司 Air conditioning system, control method thereof, control device thereof and readable storage medium
CN112050329A (en) * 2020-09-17 2020-12-08 广东积微科技有限公司 Multi-split system with multi-heat source switching function
CN112325496A (en) * 2020-11-04 2021-02-05 四方科技集团股份有限公司 Cold and hot matching unit for meat processing and control method
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CN109458683B (en) * 2018-10-16 2021-01-22 宁波工程学院 Dry type radiation heat pump and unit type household air conditioner all-in-one machine and control method thereof
CN109458683A (en) * 2018-10-16 2019-03-12 宁波工程学院 Dry type radiant heat pump and modular point of family air conditioner integrated machine and its control method
CN109386984B (en) * 2018-10-22 2020-11-06 广东美的暖通设备有限公司 Two-pipe heating recovery multi-split air conditioner system and air conditioner outdoor unit thereof
CN109386984A (en) * 2018-10-22 2019-02-26 广东美的暖通设备有限公司 Two pipes system heat-reclamation multi-compressors system and its air-conditioner outdoor unit
CN109915988A (en) * 2019-02-19 2019-06-21 广东美的暖通设备有限公司 The control method and device of multi-line system liquid impact prevention
CN109915988B (en) * 2019-02-19 2021-05-04 广东美的暖通设备有限公司 Control method and device for preventing multiple on-line systems from liquid impact
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CN111595002A (en) * 2020-05-18 2020-08-28 广东美的暖通设备有限公司 Air conditioning system, control method thereof, control device thereof and readable storage medium
CN111595002B (en) * 2020-05-18 2021-09-17 广东美的暖通设备有限公司 Air conditioning system, control method thereof, control device thereof and readable storage medium
CN112050329A (en) * 2020-09-17 2020-12-08 广东积微科技有限公司 Multi-split system with multi-heat source switching function
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