CN104949195A - Multi-connected air conditioning unit - Google Patents
Multi-connected air conditioning unit Download PDFInfo
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- CN104949195A CN104949195A CN201410115033.0A CN201410115033A CN104949195A CN 104949195 A CN104949195 A CN 104949195A CN 201410115033 A CN201410115033 A CN 201410115033A CN 104949195 A CN104949195 A CN 104949195A
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- Prior art keywords
- refrigerant
- import
- export
- exported
- described refrigerant
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- F25B41/40—Fluid line arrangements
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
Abstract
The invention provides a multi-connected air conditioning unit. The multi-connected air conditioning unit comprises a compressor, an outdoor unit heat exchanger, a first refrigerant water heat exchanger and a second refrigerant water heat exchanger, wherein the compressor is provided with a first refrigerant inlet and a first refrigerant outlet, the outdoor unit heat exchanger is provided with a first refrigerant access port and a second refrigerant access port, and the first refrigerant access port is connected with the first refrigerant inlet and the first refrigerant outlet; the first refrigerant water heat exchanger is provided with a third refrigerant access port, a fourth refrigerant access port, a first heat exchange liquid inlet and a first heat exchange liquid outlet, the second refrigerant water heat exchanger is provided with a fifth refrigerant access port, a sixth refrigerant access port, a water inlet and a water outlet, and the first refrigerant access port and the first refrigerant outlet can be communicated or disconnected, and/or the six refrigerant access port and the second refrigerant access port can be communicated or disconnected. The multi-connected air conditioning unit is higher in utilization efficiency.
Description
Technical field
The present invention relates to air-conditioner technical field, in particular to a kind of VRF Air Conditioning System.
Background technology
At present, concentrate placement, the flexile feature of interior machine because multi-connected air conditioner (heat pump) unit has off-premises station, be widely used in commercialization and domestic applications.But when indoor are without the need to heating or lowering the temperature, VRF Air Conditioning System quits work, cause this VRF Air Conditioning System on the shelf, therefore, the utilization ratio of this VRF Air Conditioning System is lower.
Summary of the invention
The present invention aims to provide the more much higher formula air-conditioner set of a kind of utilization ratio.
To achieve these goals, the invention provides a kind of VRF Air Conditioning System, comprising: compressor, there is refrigerant first import and refrigerant first exports; Outdoor unit heat exchanger, have refrigerant first import and export and refrigerant second import and export, refrigerant first is imported and exported to export with refrigerant first with refrigerant first import respectively and is connected, and refrigerant first import exports with refrigerant first and all imports and exports the channel status having and be connected and the off state blocked mutually with refrigerant first; VRF Air Conditioning System also comprises: the first chilled water heat exchanger, there is refrigerant the 3rd import and export, refrigerant the 4th import and export, heat exchange liquid first import and heat exchange liquid first export, refrigerant the 3rd is imported and exported to export with refrigerant first with refrigerant first import respectively and is connected, refrigerant first import and refrigerant first export all has the channel status be connected and the off state blocked mutually with refrigerant the 3rd import and export, and refrigerant the 4th import and export are imported and exported with refrigerant second and are connected; Second chilled water heat exchanger, there is refrigerant the 5th import and export, refrigerant the 6th import and export, water inlet and delivery port, refrigerant the 5th import and export export with refrigerant first and are connected, refrigerant the 6th is imported and exported to import and export with refrigerant second and is connected, and refrigerant the 5th import and export and refrigerant first export to be had the channel status be connected and the off state blocked mutually and/or refrigerant the 6th and import and export and import and export the channel status having and be connected and the off state blocked mutually with refrigerant second.
Further, refrigerant the 6th import and export are imported and exported with refrigerant the 4th and are connected and have the channel status be connected and the off state blocked mutually.
Further, refrigerant the 4th is imported and exported and is imported and exported the channel status having and be connected and the off state blocked mutually with refrigerant second.
Further, refrigerant the 5th import and export export with refrigerant first and are connected and have the channel status be connected and the off state blocked mutually.
Further, VRF Air Conditioning System of the present invention also comprises: reversing arrangement, refrigerant first is imported and exported to be exported with refrigerant first with refrigerant first import respectively by this reversing arrangement and is connected, and refrigerant the 3rd is imported and exported to be exported with refrigerant first with refrigerant first import respectively by this reversing arrangement and is connected.
Further, reversing arrangement comprises: cross valve, has four links; Four tube connectors, connect one to one with four links, four links respectively by correspondence tube connector and refrigerant first import, refrigerant first export, refrigerant first is imported and exported and refrigerant the 3rd import and export connect one to one.
Further, refrigerant the 4th is imported and exported to be imported and exported with refrigerant second by refrigerant the 3rd conduit and is connected, and refrigerant the 3rd conduit is provided with the first switching device and imports and exports change between channel status and off state to realize refrigerant the 4th import and export and refrigerant second.
Further, refrigerant the 5th is imported and exported to be exported with refrigerant first by refrigerant first conduit and is connected; Refrigerant the 6th is imported and exported and to be connected to realize refrigerant the 6th with the middle part of refrigerant the 3rd conduit by refrigerant second conduit and to import and export to import and export with refrigerant second and to be connected and refrigerant the 6th is imported and exported and is connected with refrigerant the 4th import and export; Refrigerant first conduit is provided with on second switch device and/or refrigerant second conduit and is provided with the 3rd switching device.
Further, VRF Air Conditioning System of the present invention also comprises: refrigerant the 4th conduit, imports and exports respectively be connected with the middle part of the tube connector between cross valve with the middle part of refrigerant first conduit and refrigerant the 3rd; 5th switching device, is arranged on refrigerant the 4th conduit.
Further, the link position of refrigerant second conduit and refrigerant the 3rd conduit is between the first switching device and refrigerant second are imported and exported.
Further, VRF Air Conditioning System of the present invention also comprises: fan coil, has heat exchange liquid second import and heat exchange liquid second exports, and heat exchange liquid second import exports with heat exchange liquid first and is connected, and heat exchange liquid second outlet is connected with heat exchange liquid first import.
Further, VRF Air Conditioning System of the present invention also comprises: ground warm device, has heat exchange liquid triple feed inlet and heat exchange liquid the 3rd outlet, and heat exchange liquid triple feed inlet exports with heat exchange liquid first and is connected, and heat exchange liquid the 3rd outlet is connected with heat exchange liquid first import.
Apply technical scheme of the present invention, compressor, annexation between outdoor unit heat exchanger and the first chilled water heat exchanger make three form the entirety of circulation, heat exchange is carried out by the heat exchange liquid and refrigerant that make inflow first chilled water heat exchanger, the thermal source that the heat exchange liquid after heat exchange can be exchanged as Indoor Thermal or low-temperature receiver, the function that existing air-conditioning heats indoor or lowers the temperature can be realized, the heat exchange liquid flowing into the first chilled water heat exchanger is preferably water, certainly, also can be other liquid that can realize identical function.Owing to being also provided with the second chilled water heat exchanger, even if indoor heat without the need to carrying out or lower the temperature, still compressor and outdoor unit heat exchanger can be started, compressed high temperature refrigerant is made to flow into the second chilled water heat exchanger, like this, the high temperature refrigerant and the water that flow into the second chilled water heat exchanger carry out heat exchange, and water in the second chilled water heat exchanger absorbs the heat of refrigerant and the higher water of formation temperature, the water that this temperature is higher is discharged through delivery port, and can be used as hot water for life.As the above analysis, the utilization ratio of VRF Air Conditioning System of the present invention is higher.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment according to VRF Air Conditioning System of the present invention.
Wherein, the Reference numeral in above-mentioned figure is as follows:
10, compressor; 11, refrigerant first import; 12, refrigerant first exports; 20, outdoor unit heat exchanger; 21, refrigerant first is imported and exported; 22, refrigerant second is imported and exported; 30, the first chilled water heat exchanger; 31, refrigerant the 3rd is imported and exported; 32, refrigerant the 4th is imported and exported; 33, heat exchange liquid first import; 34, heat exchange liquid first exports; 35, refrigerant the 3rd conduit; 36, the first switching device; 37, the 4th switching device; 38, reservoir; 40, the second chilled water heat exchanger; 41, refrigerant the 5th is imported and exported; 42, refrigerant the 6th is imported and exported; 43, water inlet; 44, delivery port; 45, refrigerant first conduit; 46, refrigerant second conduit; 47, second switch device; 48, the 3rd switching device; 51, cross valve; 52, tube connector; 53, gas-liquid separator; 60, fan coil; 61, heat exchange liquid second import; 62, heat exchange liquid second exports; 63, water pump; 64, water flow switch; 65, expansion drum; 66, the first magnetic valve; 70, ground warm device; 71, heat exchange liquid triple feed inlet; 72, heat exchange liquid the 3rd exports; 73, the second magnetic valve; 74, water knockout drum; 75, shunt valve; 76, water collector; 80, refrigerant the 4th conduit; 81, the 5th switching device; 82, two-port valve.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the VRF Air Conditioning System of the present embodiment comprises compressor 10, outdoor unit heat exchanger 20, first chilled water heat exchanger 30 and the second chilled water heat exchanger 40.Compressor 10 has refrigerant first import 11 and refrigerant first exports 12.Outdoor unit heat exchanger 20 have refrigerant first import and export 21 and refrigerant second import and export 22, refrigerant first is imported and exported 21 and is exported 12 with refrigerant first import 11 with refrigerant first respectively and be connected, and refrigerant first import 11 and refrigerant first export 12 and all import and export 21 with refrigerant first and have the channel status be connected and the off state blocked mutually.First chilled water heat exchanger 30 has refrigerant the 3rd import and export 31, refrigerant the 4th import and export 32, heat exchange liquid first import 33 and heat exchange liquid first and exports 34, refrigerant the 3rd import and export 31 export 12 with refrigerant first import 11 with refrigerant first respectively and are connected, refrigerant first import 11 and refrigerant first export 12 and all import and export 31 with refrigerant the 3rd and have the channel status be connected and the off state blocked mutually, and refrigerant the 4th is imported and exported 32 and imported and exported 22 with refrigerant second and be connected.Second chilled water heat exchanger 40 has refrigerant the 5th import and export 41, refrigerant the 6th import and export 42, water inlet 43 and delivery port 44, refrigerant the 5th import and export 41 export 12 with refrigerant first and are connected, refrigerant the 6th import and export 42 are imported and exported 22 with refrigerant second and are connected, and refrigerant the 5th import and export 41 export 12 with refrigerant first and have the channel status be connected and the off state blocked mutually.
Certainly, as feasible embodiment, refrigerant the 6th import and export 42 and refrigerant second import and export 22 and there is the channel status be connected replace refrigerant the 5th to import and export 41 with the mode of the off state blocked mutually exporting with refrigerant first mode that 12 have the channel status be connected and the off state blocked mutually.In addition, can also refrigerant the 5th import and export 41 with refrigerant first export 12 there is the channel status be connected and the off state blocked mutually while, refrigerant the 6th import and export 42 are imported and exported 22 with refrigerant second and are had the channel status be connected and the off state blocked mutually.
The VRF Air Conditioning System of application the present embodiment, compressor 10, annexation between outdoor unit heat exchanger 20 and the first chilled water heat exchanger 30 make three form the entirety of circulation, heat exchange is carried out by the heat exchange liquid and refrigerant that make inflow first chilled water heat exchanger 30, the thermal source that the heat exchange liquid after heat exchange can be exchanged as Indoor Thermal or low-temperature receiver, the function that existing air-conditioning heats indoor or lowers the temperature can be realized, the heat exchange liquid flowing into the first chilled water heat exchanger 30 is preferably water, certainly, also can be other liquid that can realize identical function.Owing to being also provided with the second chilled water heat exchanger 40, even if indoor heat without the need to carrying out or lower the temperature, still compressor 10 and outdoor unit heat exchanger 20 can be started, compressed high temperature refrigerant is made to flow into the second chilled water heat exchanger 40, like this, the high temperature refrigerant and the water that flow into the second chilled water heat exchanger 40 carry out heat exchange, and water in the second chilled water heat exchanger 40 absorbs the heat of refrigerant and the higher water of formation temperature, the water that this temperature is higher is discharged through delivery port 44, and can be used as hot water for life.As the above analysis, the utilization ratio of the VRF Air Conditioning System of the present embodiment is higher.Why refrigerant the 5th is imported and exported 41 and is exported 12 with refrigerant first and have the channel status be connected and the off state blocked mutually is to prevent when not needing use second chilled water heat exchanger 40, refrigerant after compressed flows in outdoor unit heat exchanger 20 through the second chilled water heat exchanger 40, because the second chilled water heat exchanger 40 does not liquefy to refrigerant, the refrigerant for liquefaction causes the damage of outdoor unit heat exchanger 20.
If refrigerant the 5th import and export 41 and refrigerant first export 12 there is the channel status be connected and the off state blocked mutually while, refrigerant the 6th import and export 42 are imported and exported 22 with refrigerant second and are had the channel status be connected and the off state blocked mutually, like this, can prevent refrigerant from flowing in the second chilled water heat exchanger 40 with any direction, part refrigerant is stored in the second chilled water heat exchanger 40, causes the waste of refrigerant.
When only needing to heat (indoor intensification or ground warm device heat up), refrigerant the 5th import and export 41 are exported 12 with refrigerant first and is in off state, refrigerant the 6th import and export 42 are imported and exported 22 with refrigerant second and are in off state, flow in the second chilled water heat exchanger 40 to prevent refrigerant, and refrigerant first is exported 12 to import and export 31 be in channel status with refrigerant the 3rd, refrigerant first import 11 and refrigerant first are imported and exported 21 and are in channel status, like this, the high temperature refrigerant exporting 12 discharges through refrigerant first is in the first chilled water heat exchanger 30 and transfer heat to the heat exchange liquid flowing through this first chilled water heat exchanger 30, the heat exchange liquid exporting 34 discharges from heat exchange liquid first is high-temp liquid, high-temp liquid is used for heating up to indoor or ground warm device.Import and export the 32 low temperature refrigerants of discharging from refrigerant the 4th to be back in compressor 10 through outdoor unit heat exchanger 20 to form a circulation.
When only needing refrigeration (room temperature lowering), equally refrigerant the 5th import and export 41 are exported 12 with refrigerant first and be in off state, refrigerant the 6th import and export 42 are imported and exported 22 with refrigerant second and are in off state, flow in the second chilled water heat exchanger 40 to prevent refrigerant, and refrigerant first is exported 12 to import and export 21 be in channel status with refrigerant first, refrigerant first import 11 and refrigerant the 3rd are imported and exported 31 and are in channel status, like this, the high temperature refrigerant exporting 12 discharges through refrigerant first carries out liquefaction cooling in outdoor unit heat exchanger 20, low temperature refrigerant is imported and exported 32 through refrigerant the 4th and is entered in the first chilled water heat exchanger 30, and absorb the heat flowing through the heat exchange liquid of this first chilled water heat exchanger 30, the heat exchange liquid exporting 34 discharges from heat exchange liquid first is cryogenic liquid, this cryogenic liquid is used for room temperature lowering.Import and export in 31 refrigerant return of discharging to compressor 10 from refrigerant the 3rd to form a circulation.When needs are to outdoor unit heat exchanger 20 defrost process, the same process adopting above-mentioned refrigeration, in this process, the first chilled water heat exchanger 30 is as defrost thermal source.
When only needing domestic hot-water processed, refrigerant the 3rd is imported and exported 31 and is in off state with refrigerant first import 11, refrigerant the 3rd import and export 31 export 12 with refrigerant first and are in off state, the first chilled water heat exchanger 30 is flowed through to prevent refrigerant, and refrigerant first is exported 12 to import and export 41 be in channel status with refrigerant the 5th, refrigerant the 6th import and export 42 are imported and exported 22 with refrigerant second and are in channel status, like this, the high temperature refrigerant exporting 12 discharges through refrigerant first is in the second chilled water heat exchanger 40 and transfer heat to the water flowing through this second chilled water heat exchanger 40, the high-temperature water of discharging through delivery port 44 can use as domestic hot-water, import and export the 42 low temperature refrigerants of discharging through refrigerant the 6th to be back in compressor 10 through outdoor unit heat exchanger 20 and to realize a circulation.
As needs domestic hot-water and when heating (indoor intensification or ground warm device heat up), refrigerant first is exported 12 to import and export 41 be in channel status with refrigerant the 5th, refrigerant the 6th import and export 42 are imported and exported 22 with refrigerant second and are in channel status, refrigerant first exports 12 and imports and exports 31 be in channel status with refrigerant the 3rd, refrigerant first import 11 and refrigerant first are imported and exported 21 and are in channel status, detailed process is that above-mentioned needs heat and superpose with only needing the process of domestic hot-water processed, does not repeat them here.
As shown in Figure 1, in the present embodiment, refrigerant the 6th is imported and exported 42 and is imported and exported 32 with refrigerant the 4th and be connected and have the channel status be connected and the off state blocked mutually.(room temperature lowering) is freezed while said structure can realize domestic hot-water processed, particularly, refrigerant first is exported 12 to import and export 21 be in channel status with refrigerant first, refrigerant first import 11 and refrigerant the 3rd are imported and exported 31 and are in channel status, refrigerant first exports 12 and imports and exports 41 be in channel status with refrigerant the 5th, refrigerant the 6th import and export 42 are imported and exported 32 with refrigerant the 4th and are in channel status, like this, the low temperature refrigerant importing and exporting 22 discharges through refrigerant second with import and export the 42 low temperature refrigerants of discharging through refrigerant the 6th and enter in the first chilled water heat exchanger 30 simultaneously and carry out gasifying and absorb the heat of the heat exchange liquid flowing through this first chilled water heat exchanger 30, the heat exchange liquid exporting 34 discharges from heat exchange liquid first is cryogenic liquid, this cryogenic liquid is used for room temperature lowering.Domestic hot-water processed in this process needs the process of domestic hot-water processed identical with above-mentioned, for for purpose of brevity, does not repeat them here.
As shown in Figure 1, in the present embodiment, refrigerant the 4th is imported and exported 32 and is imported and exported 22 with refrigerant second and have the channel status be connected and the off state blocked mutually.Like this, when only needing domestic hot-water processed or using the second chilled water heat exchanger 40 as defrost thermal source, refrigerant the 4th import and export 32 can be imported and exported 22 with refrigerant second and be in off state, prevent refrigerant from flowing into and be stored in the first chilled water heat exchanger 30, reducing the utilization rate of refrigerant.
As shown in Figure 1, in the present embodiment, refrigerant the 5th is imported and exported 41 and is exported 12 with refrigerant first and be connected and have the channel status be connected and the off state blocked mutually.Said structure can adopt the second chilled water heat exchanger 40 as defrost thermal source to outdoor unit heat exchanger 20 defrost process time, refrigerant the 3rd is imported and exported 31 and is in off state with refrigerant first import 11, refrigerant the 3rd import and export 31 export 12 with refrigerant first and are in off state, the first chilled water heat exchanger 30 is flowed through to prevent refrigerant, refrigerant first is exported 12 to import and export 21 be in channel status with refrigerant first, refrigerant the 6th import and export 42 are imported and exported 22 with refrigerant second and are in channel status, and refrigerant the 5th import and export 41 export 12 with refrigerant first and are in channel status.The high temperature refrigerant exporting 12 discharges through refrigerant first flows into outdoor unit heat exchanger 20 and carries out liquidation exothermic reaction with to outdoor unit heat exchanger 20 defrost process, the low temperature refrigerant importing and exporting 22 discharges through refrigerant second absorbs and flows through the heat of the water of this second chilled water heat exchanger 40 and gasify in the second chilled water heat exchanger 40, and the refrigerant after gasification is back in compressor 10 through refrigerant the 5th import and export 41 and realizes a circulation.
As shown in Figure 1, the VRF Air Conditioning System of the present embodiment also comprises reversing arrangement, refrigerant first is imported and exported 21 and is exported 12 with refrigerant first import 11 with refrigerant first respectively by this reversing arrangement and be connected, and refrigerant the 3rd is imported and exported 31 and exported 12 with refrigerant first import 11 with refrigerant first respectively by this reversing arrangement and be connected.Reversing arrangement is used for realizing that refrigerant first import 11 and refrigerant first import and export 21, refrigerant first export 12 and refrigerant first imports and exports 21, refrigerant first import 11 and refrigerant the 3rd import and export 31 and refrigerant first export 12 and refrigerant the 3rd import and export 31 and change between channel status and off state.
As shown in Figure 1, in the present embodiment, reversing arrangement comprises cross valve 51 and four tube connectors 52, and cross valve 51 has four links.Four tube connectors 52 and four links connect one to one, four links export 12 respectively by tube connector 52 and refrigerant first import 11, the refrigerant first of correspondence, refrigerant first import and export 21 and refrigerant the 3rd import and export 31 and connect one to one.Above-mentioned two corresponding import and export can be realized very easily by cross valve 51 to change between channel status and off state, make the structure of the VRF Air Conditioning System of the present embodiment simpler.Tube connector 52 between refrigerant first import 11 and cross valve 51 is provided with gas-liquid separator 53.
As shown in Figure 1, in the present embodiment, refrigerant the 4th is imported and exported 32 and is imported and exported 22 by refrigerant the 3rd conduit 35 with refrigerant second and be connected, and refrigerant the 3rd conduit 35 is provided with the first switching device 36 and imports and exports 22 change between channel status and off state to realize refrigerant the 4th import and export 32 and refrigerant second.First switching device 36 is preferably electromagnetic expanding valve.
As shown in Figure 1, in the present embodiment, refrigerant the 5th is imported and exported 41 and is exported 12 by refrigerant first conduit 45 with refrigerant first and be connected.Refrigerant the 6th is imported and exported 42 and to be connected to realize refrigerant the 6th with the middle part of refrigerant the 3rd conduit 35 by refrigerant second conduit 46 and to import and export 42 and import and export 22 with refrigerant second and to be connected and refrigerant the 6th is imported and exported 42 and imported and exported 32 with refrigerant the 4th and be connected.Refrigerant first conduit 45 is provided with second switch device 47, refrigerant can be controlled like this and can flow through the second chilled water heat exchanger 40.Certainly, also can by mode refrigerant second conduit 46 being provided with the 3rd switching device 48 mode and replacing refrigerant first conduit 45 is provided with second switch device 47, in the present embodiment, while refrigerant first conduit 45 is provided with second switch device 47, refrigerant second conduit 46 is provided with the 3rd switching device 48.Second switch device 47 is preferably magnetic valve.As shown in Figure 1, refrigerant the 4th conduit 80 and the 5th switching device 81 is also comprised in the VRF Air Conditioning System of the present embodiment, the middle part of the tube connector 52 that refrigerant the 4th conduit 80 is imported and exported between 31 with cross valve 51 with middle part and the refrigerant the 3rd of refrigerant first conduit 45 is respectively connected, and the 5th switching device 81 is arranged on refrigerant the 4th conduit 80.Like this, employing second chilled water heat exchanger 40 as defrost thermal source to outdoor unit heat exchanger 20 defrost process time, refrigerant the 5th can be made to import and export 41 export 12 be in channel status with refrigerant first by opening the 5th switching device 81.5th switching device 81 is preferably magnetic valve.Refrigerant the 3rd import and export 31 and cross valve 51 between tube connector 52 on be provided with two-port valve 82, two-port valve 82 at cross valve 51 with between corresponding tube connector 52 and the link position of refrigerant the 4th conduit 80.
Preferably, refrigerant the 5th is imported and exported 41 middle parts of tube connector 52 exported between 12 and cross valve 51 with refrigerant first by refrigerant first conduit 45 and is connected to realize refrigerant the 5th and imports and exports 41 and export 12 with refrigerant first and be connected.
As shown in Figure 1, in the present embodiment, the link position of refrigerant second conduit 46 and refrigerant the 3rd conduit 35 is imported and exported between 22 at the first switching device 36 and refrigerant second.Like this, the keying of the first switching device 36 can not affect refrigerant the 6th and imports and exports 42 and import and export 22 whether be in channel status or off state with refrigerant second.
As shown in Figure 1, in the present embodiment, refrigerant the 3rd conduit 35 is provided with the 4th switching device 37 and reservoir 38,4th switching device 37 is imported and exported between 22 at reservoir 38 and refrigerant second, and reservoir 38 is between the link position and the 4th switching device 37 of refrigerant second conduit 46 and refrigerant the 3rd conduit 35.
As shown in Figure 1, the VRF Air Conditioning System of the present embodiment also comprises fan coil 60, fan coil 60 has heat exchange liquid second import 61 and heat exchange liquid second exports 62, heat exchange liquid second import 61 exports 34 with heat exchange liquid first and is connected, and heat exchange liquid second exports 62 and is connected with heat exchange liquid first import 33.Fan coil 60 Stability Analysis of Structures, functional, good temperature control can be carried out to indoor.As shown in Figure 1, export 34 to heat exchange liquid second import 61 by heat exchange liquid first and be disposed with expansion drum 65, water pump 63, water flow switch 64 and the first magnetic valve 66 between heat exchange liquid second import 61 and heat exchange liquid first export 34.In addition, fan coil 60 is multiple, and multiple fan coil 60 is arranged in parallel.
As shown in Figure 1, the VRF Air Conditioning System of the present embodiment also comprises ground warm device 70, ground warm device 70 has heat exchange liquid triple feed inlet 71 and heat exchange liquid the 3rd exports 72, heat exchange liquid triple feed inlet 71 exports 34 with heat exchange liquid first and is connected, and heat exchange liquid the 3rd exports 72 and is connected with heat exchange liquid first import 33.The high temperature heat exchange liquid exporting 34 outflows from heat exchange liquid first provides thermal source for ground warm device 70.Preferably, heat exchange liquid triple feed inlet 71 exports 34 in the mode be connected in parallel to each other with heat exchange liquid first with heat exchange liquid second import 61 and is connected, and heat exchange liquid the 3rd outlet 72 exports 62 with heat exchange liquid second and is connected with heat exchange liquid first import 33 in the mode be connected in parallel to each other.Export on 34 to heat exchange liquid triple feed inlet 71 between heat exchange liquid triple feed inlet 71 and heat exchange liquid first export 34 and by heat exchange liquid first and be disposed with above-mentioned expansion drum 65, water pump 63 and water flow switch 64, and be provided with the second magnetic valve 73, second magnetic valve 73 and the first magnetic valve 66 is arranged in parallel.Preferably, ground warm device 70 is multiple, and multiple ground warm device 70 is arranged in parallel.Be provided with water knockout drum 74 between multiple heat exchange liquid triple feed inlet 71 of multiple ground warm device 70 and the second magnetic valve 73, between each heat exchange liquid triple feed inlet 71 and water knockout drum 74, be provided with shunt valve 75.Multiple heat exchange liquid the 3rd of multiple ground warm device 70 export between 72 and heat exchange liquid first import 33 and are provided with water collector 76.
The detailed process of each function is realized below in conjunction with concrete structure introduction:
When only needing to heat (indoor intensification or ground warm device heat up), 4th switching device 37, first switching device 36 and two-port valve 82 are opened, second switch device 47, the 3rd switching device 48 and the 5th switching device 81 are closed, refrigerant first exports 12 and imports and exports 31 by cross valve 51 with refrigerant the 3rd and communicate, and refrigerant first is imported and exported 21 and communicated with refrigerant first import 11 by cross valve 51.
When only needing refrigeration (room temperature lowering) or adopt the first chilled water heat exchanger 30 to carry out defrost as defrost thermal source, 4th switching device 37, first switching device 36 and two-port valve 82 are opened, second switch device 47, the 3rd switching device 48 and the 5th switching device 81 are closed, refrigerant first exports 12 and imports and exports 21 by cross valve 51 with refrigerant first and communicate, and refrigerant the 3rd is imported and exported 31 and communicated with refrigerant first import 11 by cross valve 51.
When only needing domestic hot-water processed, 5th switching device 81, two-port valve 82 and the first switching device 36 are closed, second switch device 47, the 3rd switching device 48 and the 4th switching device 37 are opened, and refrigerant first is imported and exported 21 and communicated with refrigerant first import 11 by cross valve 51.
As needs domestic hot-water and when heating (indoor intensification or ground warm device heat up), 4th switching device 37, first switching device 36, two-port valve 82, second switch device 47 and the 3rd switching device 48 are opened, refrigerant first exports 12 and imports and exports 31 by cross valve 51 and two-port valve 82 with refrigerant the 3rd and communicate, and refrigerant first is imported and exported 21 and communicated with refrigerant first import 11 by cross valve 51.
When employing second chilled water heat exchanger 40 as defrost thermal source to outdoor unit heat exchanger 20 defrost process time, second switch device 47, two-port valve 82 and the first switching device 36 are closed, 3rd switching device 48 and the 4th switching device 37 are opened, and refrigerant first exports 12 and imports and exports 21 by cross valve 51 with refrigerant first and communicate.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a VRF Air Conditioning System, comprising:
Compressor (10), has refrigerant first import (11) and refrigerant first exports (12);
Outdoor unit heat exchanger (20), there is refrigerant first and import and export (21) and refrigerant second is imported and exported (22), described refrigerant first is imported and exported (21) and is exported (12) with described refrigerant first import (11) with described refrigerant first respectively and be connected, and described refrigerant first import (11) and described refrigerant first export (12) and all import and export (21) with described refrigerant first and have the channel status be connected and the off state blocked mutually;
It is characterized in that, described VRF Air Conditioning System also comprises:
First chilled water heat exchanger (30), there is refrigerant the 3rd and import and export (31), refrigerant the 4th imports and exports (32), heat exchange liquid first import (33) and heat exchange liquid first export (34), described refrigerant the 3rd import and export (31) exports (12) with described refrigerant first import (11) with described refrigerant first respectively and is connected, described refrigerant first import (11) and described refrigerant first export (12) and all import and export (31) with described refrigerant the 3rd and have the channel status be connected and the off state blocked mutually, described refrigerant the 4th import and export (32) is imported and exported (22) with described refrigerant second and is connected,
Second chilled water heat exchanger (40), there is refrigerant the 5th and import and export (41), refrigerant the 6th imports and exports (42), water inlet (43) and delivery port (44), described refrigerant the 5th import and export (41) exports (12) with described refrigerant first and is connected, described refrigerant the 6th import and export (42) is imported and exported (22) with described refrigerant second and is connected, described refrigerant the 5th is imported and exported (41) and described refrigerant first and is exported (12) and have the channel status be connected and the off state blocked mutually and/or described refrigerant the 6th and import and export (42) and import and export (22) with described refrigerant second and have the channel status be connected and the off state blocked mutually.
2. VRF Air Conditioning System according to claim 1, is characterized in that, described refrigerant the 6th import and export (42) is imported and exported (32) with described refrigerant the 4th and is connected and has the channel status be connected and the off state blocked mutually.
3. VRF Air Conditioning System according to claim 1, is characterized in that, described refrigerant the 4th import and export (32) is imported and exported (22) with described refrigerant second and had the channel status be connected and the off state blocked mutually.
4. VRF Air Conditioning System according to claim 1, is characterized in that, described refrigerant the 5th import and export (41) exports (12) with described refrigerant first and is connected and has the channel status be connected and the off state blocked mutually.
5. VRF Air Conditioning System according to claim 1, is characterized in that, also comprises:
Reversing arrangement, described refrigerant first is imported and exported (21) and is exported (12) with described refrigerant first import (11) with described refrigerant first respectively by this reversing arrangement and be connected, and described refrigerant the 3rd is imported and exported (31) and exported (12) with described refrigerant first import (11) with described refrigerant first respectively by this reversing arrangement and be connected.
6. VRF Air Conditioning System according to claim 5, is characterized in that, described reversing arrangement comprises:
Cross valve (51), has four links;
Four tube connectors (52), connect one to one with described four links, described four links export (12) respectively by described tube connector (52) and refrigerant first import (11), the refrigerant first of correspondence, refrigerant first imports and exports (21) and refrigerant the 3rd and import and export (31) and connect one to one.
7. VRF Air Conditioning System according to claim 6, it is characterized in that, described refrigerant the 4th is imported and exported (32) and is imported and exported (22) by refrigerant the 3rd conduit (35) with described refrigerant second and be connected, and described refrigerant the 3rd conduit (35) is provided with the first switching device (36) and imports and exports (22) change between channel status and off state to realize described refrigerant the 4th import and export (32) and described refrigerant second.
8. VRF Air Conditioning System according to claim 7, is characterized in that,
Described refrigerant the 5th import and export (41) exports (12) by refrigerant first conduit (45) with described refrigerant first and is connected;
Described refrigerant the 6th is imported and exported (42) and to be connected to realize described refrigerant the 6th with the middle part of described refrigerant the 3rd conduit (35) by refrigerant second conduit (46) and to import and export (42) and described refrigerant second and import and export (22) and to be connected and described refrigerant the 6th is imported and exported (42) and imported and exported (32) with described refrigerant the 4th and be connected;
Described refrigerant first conduit (45) is provided with on second switch device (47) and/or described refrigerant second conduit (46) and is provided with the 3rd switching device (48).
9. VRF Air Conditioning System according to claim 8, is characterized in that, also comprises:
Refrigerant the 4th conduit (80), the middle part of the described tube connector (52) imported and exported between (31) with described cross valve (51) with middle part and the described refrigerant the 3rd of described refrigerant first conduit (45) is respectively connected;
5th switching device (81), is arranged on described refrigerant the 4th conduit (80).
10. VRF Air Conditioning System according to claim 8, it is characterized in that, the link position of described refrigerant second conduit (46) and described refrigerant the 3rd conduit (35) is positioned at described first switching device (36) and described refrigerant second is imported and exported between (22).
11. VRF Air Conditioning System according to claim 1, is characterized in that, also comprise:
Fan coil (60), there is heat exchange liquid second import (61) and heat exchange liquid second exports (62), described heat exchange liquid second import (61) exports (34) with described heat exchange liquid first and is connected, and described heat exchange liquid second exports (62) and is connected with described heat exchange liquid first import (33).
12. VRF Air Conditioning System according to claim 1, is characterized in that, also comprise:
Ground warm device (70), there is heat exchange liquid triple feed inlet (71) and heat exchange liquid the 3rd outlet (72), described heat exchange liquid triple feed inlet (71) exports (34) with described heat exchange liquid first and is connected, and described heat exchange liquid the 3rd exports (72) and is connected with described heat exchange liquid first import (33).
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| CN104949195B (en) | 2017-11-14 |
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