CN104633771A - Multi-connected air conditioning unit and control method thereof - Google Patents
Multi-connected air conditioning unit and control method thereof Download PDFInfo
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- CN104633771A CN104633771A CN201310574350.4A CN201310574350A CN104633771A CN 104633771 A CN104633771 A CN 104633771A CN 201310574350 A CN201310574350 A CN 201310574350A CN 104633771 A CN104633771 A CN 104633771A
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- heat exchanger
- cross valve
- valve
- circulatory system
- air conditioning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
Abstract
The invention provides a multi-connected air conditioning unit and a control method thereof. The multi-connected air conditioning unit comprises a first circulation system and a second circulation system. The first circulation system comprises a compressor, a first four-way valve, a first indoor heat exchanger, a first throttling component and a first outdoor heat exchanger. The second circulation system comprises a compressor, a second four-way valve, a second indoor heat exchanger, a second throttling component and a second outdoor heat exchanger. The four valve openings of the second four-way valve are connected with an air suction port of the corresponding compressor, an exhaust port of the corresponding compressor, the second outdoor heat exchanger and the second indoor heat exchanger respectively, and the second indoor heat exchanger is connected with the second outdoor heat exchanger through the second throttling component. According to the multi-connected air conditioning unit, the operation mode of the first circulation system and the operation mode of the second circulation system are changed by changing the connecting direction of the first four-way valve and the connecting direction of the second four-way valve, it can be achieved that the first circulation system and the second circulation system operate in different modes at the same time, and therefore the using demands of a user can be met.
Description
Technical field
The present invention relates to multi-connected machine technical field, more particularly, relate to a kind of VRF Air Conditioning System and control method thereof.
Background technology
VRF Air Conditioning System, by advantages such as its economize energy, use high flexible, is widely used gradually.
In actual use, may there is difference in indoor requirement, needs different indoor sets to run with different patterns simultaneously, such as, needs refrigeration, need to heat in another room in a room.But for VRF Air Conditioning System, all indoor sets can only with identical mode operation, and namely all indoor sets run in a chiller mode, or run with heating mode, cause VRF Air Conditioning System can not meet the instructions for use of user.
In sum, how to provide a kind of VRF Air Conditioning System, can running with different patterns to realize different indoor sets simultaneously, and then meet the instructions for use of user, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
The object of this invention is to provide a kind of VRF Air Conditioning System, can run in different modalities to realize different indoor sets simultaneously, and then meet the instructions for use of user.Another object of the present invention is to provide a kind of control method of VRF Air Conditioning System.
To achieve these goals, the invention provides following technical scheme:
A kind of VRF Air Conditioning System, comprise first circulatory system and second circulatory system, described first circulatory system comprises: compressor, the first cross valve, the first indoor heat exchanger, first throttle parts, the first outdoor heat exchanger; Described second circulatory system comprises: described compressor, the second cross valve, the second indoor heat exchanger, second section stream unit, the second outdoor heat exchanger; Wherein, four valve ports of described second cross valve are communicated with described second indoor heat exchanger with the exhaust outlet of the air entry of described compressor, described compressor, described second outdoor heat exchanger respectively, and described second indoor heat exchanger is connected by described second section stream unit with described second outdoor heat exchanger.
Preferably, above-mentioned VRF Air Conditioning System, also comprises heat-exchanger rig, and described heat-exchanger rig comprises: housing, and is positioned at described enclosure interior and can carries out the first heat exchanger tube and second heat exchanger tube of heat exchange; Described first heat exchanger tube is arranged in series between described first throttle parts and described first cross valve; Described second heat exchanger tube is arranged in series between described second section stream unit and described second cross valve.
Preferably, in above-mentioned VRF Air Conditioning System, described heat-exchanger rig is double pipe heat exchanger.
Preferably, above-mentioned VRF Air Conditioning System, also comprise oil eliminator, the gas outlet of described oil eliminator is communicated with described second cross valve with described first cross valve respectively, the import of described oil eliminator is communicated with the exhaust outlet of described compressor, and the liquid outlet of described oil eliminator is communicated with the air entry of described compressor.
Preferably, in above-mentioned VRF Air Conditioning System, described VRF Air Conditioning System is one drag two air-conditioner set or an one driven multiple air conditioner group.
Preferably, in above-mentioned VRF Air Conditioning System, described first throttle parts and second section stream unit are electric expansion valve or capillary.
Preferably, above-mentioned VRF Air Conditioning System, also comprises the integrated housing with two heat exchanging chambers, and described second outdoor heat exchanger is positioned at a described heat exchanging chamber, and described first outdoor heat exchanger is positioned at heat exchanging chamber described in another.
Preferably, in above-mentioned VRF Air Conditioning System, first valve port a1 of described first cross valve is communicated with the exhaust outlet of described compressor respectively with the first valve port a2 of described second cross valve, second valve port b1 of described first cross valve is communicated with the air entry of described compressor respectively with the second valve port b2 of described second cross valve, 3rd valve port c1 of described first cross valve is communicated with described second indoor heat exchanger respectively with the 4th valve port d2 of described second cross valve, 4th valve port d1 of described first cross valve is communicated with described second outdoor heat exchanger respectively with the 3rd valve port c2 of described second cross valve.
VRF Air Conditioning System provided by the invention, by setting up second circulatory system, second circulatory system has the second cross valve, first circulatory system has the first cross valve, and second circulatory system and first circulatory system share a compressor, the operational mode of first circulatory system is changed by the conducting direction changing the first cross valve, the operational mode of second circulatory system is changed by the conducting direction changing the second cross valve, then the operational mode of first circulatory system and the operational mode of second circulatory system are independent of each other, relatively independent, thus first circulatory system can be realized and second circulatory system is run in different modalities simultaneously, and then the instructions for use of user can be met.
Based on the above-mentioned VRF Air Conditioning System provided, present invention also offers a kind of control method of VRF Air Conditioning System, wherein, VRF Air Conditioning System is above-mentioned VRF Air Conditioning System.The control method of this VRF Air Conditioning System comprises step:
When described first circulatory system and described second circulatory system all need to freeze or dehumidify, or in described first circulatory system and described second circulatory system, one needs dehumidifying, when another one needs to freeze, the 4th valve port d1 of described first cross valve is communicated with the exhaust outlet of described compressor respectively with the 3rd valve port c2 of described second cross valve;
When described first circulatory system needs dehumidifying or refrigeration, when described second circulatory system needs to heat, the 4th valve port d1 of described first cross valve is communicated with the exhaust outlet of described compressor respectively with the 4th valve port d2 of described second cross valve;
When described first circulatory system needs to heat, when described second circulatory system needs dehumidifying or freezes, the 3rd valve port c1 of described first cross valve is communicated with the exhaust outlet of described compressor respectively with the 3rd valve port c2 of described second cross valve;
When described first circulatory system and described second circulatory system all need to heat, the 3rd valve port c1 of described first cross valve is communicated with the exhaust outlet of described compressor respectively with the 4th valve port d2 of described second cross valve.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the VRF Air Conditioning System that Fig. 1 provides for the embodiment of the present invention;
The VRF Air Conditioning System that Fig. 2 provides for the embodiment of the present invention when the first mode of operation refrigerant flow to schematic diagram;
The VRF Air Conditioning System that Fig. 3 provides for the embodiment of the present invention when the second mode of operation refrigerant flow to schematic diagram;
The VRF Air Conditioning System that Fig. 4 provides for the embodiment of the present invention when the third mode of operation refrigerant flow to schematic diagram;
The VRF Air Conditioning System that Fig. 5 provides for the embodiment of the present invention when the 4th kind of mode of operation refrigerant flow to schematic diagram.
In upper Fig. 1-5:
1 be compressor, 2 be integrated housing for oil eliminator, 3 be the second cross valve, 4 be the first cross valve, 5 be the second outdoor heat exchanger, 6 is the first outdoor heat exchanger, 7,8 be heat-exchanger rig, 9 be second section stream unit, 10 be the first indoor heat exchanger for first throttle parts, 11 are the second indoor heat exchanger, 12.
Detailed description of the invention
Embodiments provide a kind of VRF Air Conditioning System, first circulatory system can be realized and second circulatory system can be run in different modalities simultaneously, and then the instructions for use of user can be met.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The VRF Air Conditioning System that the embodiment of the present invention provides, comprising: first circulatory system and second circulatory system, and this first circulatory system comprises: compressor 1, first cross valve 4, first indoor heat exchanger 12, first throttle parts 10, first outdoor heat exchanger 6; This second circulatory system comprises: compressor 1, second cross valve 3, second indoor heat exchanger 11, second section stream unit 9, second outdoor heat exchanger 5; Wherein, four valve ports of the second cross valve 3 are connected with the second indoor heat exchanger 11 with the air entry of compressor 1, the exhaust outlet of compressor 1, the second outdoor heat exchanger 5 respectively, and the second indoor heat exchanger 11 is connected by second section stream unit 9 with the second outdoor heat exchanger 5.
The VRF Air Conditioning System that the embodiment of the present invention provides, by setting up second circulatory system, second circulatory system has the second cross valve 3, first circulatory system has the first cross valve 4, and second circulatory system and first circulatory system share a compressor 1, the operational mode of first circulatory system is changed by the conducting direction changing the first cross valve 4, the operational mode of second circulatory system is changed by the conducting direction changing the second cross valve 3, then the operational mode of first circulatory system and the operational mode of second circulatory system are independent of each other, relatively independent, thus first circulatory system can be realized and second circulatory system is run in different modalities simultaneously, and then the instructions for use of user can be met.
In the VRF Air Conditioning System that above-described embodiment provides, first circulatory system and second circulatory system all in a chiller mode or dehumidification mode run, or one is run in a chiller mode, and another one is run with dehumidification mode, and refrigerant flows to as shown in Figure 2.The high-temperature gas refrigerant that compressor 1 is discharged is divided into two streams, first-class refrigerant flow to the first outdoor heat exchanger 6 through the first cross valve 4 and carries out condensation heat release, heat dissipation is in external environment, condensed refrigerant flow to the first indoor heat exchanger 12 through first throttle parts 10 and carries out evaporation endothermic, reduce indoor temperature, last refrigerant the first cross valve 4 of hanging oneself is back to compressor 1; Another stream refrigerant flow to the second outdoor heat exchanger 5 through the second cross valve 3 and carries out condensation heat release, heat dissipation is in external environment, condensed refrigerant flow to the second indoor heat exchanger 11 through second section stream unit 9 and carries out evaporation endothermic, reduce indoor temperature, last refrigerant is back to compressor 1 through the second cross valve 3.
The VRF Air Conditioning System that above-described embodiment provides, first circulatory system and second circulatory system are all run with heating mode, and refrigerant flows to as shown in Figure 3.The high-temperature gas refrigerant that compressor 1 is discharged is divided into two streams, first-class refrigerant flow to the first indoor heat exchanger 12 through the first cross valve 4 and carries out condensation heat release, raise indoor temperature, condensed refrigerant flow to the first outdoor heat exchanger 6 through first throttle parts 10 and carries out evaporation endothermic, and last refrigerant is back to compressor 1 through the first cross valve 4; Another stream refrigerant flow to the second indoor heat exchanger 11 through the second cross valve 3 and carries out condensation heat release, raise indoor temperature, condensed refrigerant flow to the second outdoor heat exchanger 5 through second section stream unit 9 and carries out evaporation endothermic, and finally, refrigerant is back to compressor 1 through the second cross valve 3.
The VRF Air Conditioning System that above-described embodiment provides, first circulatory system in a chiller mode or dehumidification mode run, second circulatory system is run with heating mode, refrigerant flow to as shown in Figure 4.The high-temperature gas refrigerant that compressor 1 is discharged is divided into two streams, first-class refrigerant flow to the first outdoor heat exchanger 6 through the first cross valve 4 and carries out condensation heat release, then flow to the first indoor heat exchanger 12 through first throttle parts 10 and carry out evaporation endothermic, reduce indoor temperature, be back to compressor 1 finally by the first cross valve 4; Another stream refrigerant flow in the second indoor heat exchanger 11 through the second cross valve 3 and carries out condensation heat release, raises indoor temperature, then flow to the second outdoor heat exchanger 5 through second section stream unit 9 and carry out evaporation endothermic, being back to compressor 1 finally by the second cross valve 3.
The VRF Air Conditioning System that above-described embodiment provides, first circulatory system is run with heating mode, second circulatory system in a chiller mode or dehumidification mode run, refrigerant flow to as shown in Figure 5.The high-temperature gas refrigerant that compressor 1 is discharged is divided into two streams, first-class refrigerant flow to the first indoor heat exchanger 12 through the first cross valve 4 and carries out condensation heat release, raise indoor temperature, then flow to the first outdoor heat exchanger 6 through first throttle parts 10 and carry out evaporation endothermic, last refrigerant is back to compressor 1 through the first cross valve 4; Another stream refrigerant flow to the second outdoor heat exchanger 5 through the second cross valve 3 and carries out condensation heat release, then flow to the second indoor heat exchanger 11 through second section stream unit 9 and carry out evaporation endothermic, reduce indoor temperature, last refrigerant is back to compressor 1 through the second cross valve 3.
In order to optimize technique scheme further, the VRF Air Conditioning System that above-described embodiment provides, also comprises heat-exchanger rig 8, and heat-exchanger rig 8 comprises: housing, and is positioned at enclosure interior and can carries out the first heat exchanger tube and second heat exchanger tube of heat exchange; First heat exchanger tube is arranged in series between first throttle parts 10 and the first cross valve 4; Second heat exchanger tube is arranged in series between second section stream unit 9 and the second cross valve 3.Like this, the refrigerant flowing through the first heat exchanger tube and the refrigerant flowing through the second heat exchanger tube can carry out heat exchange, when first circulatory system and second circulatory system are run with model identical, can the heat of two parts refrigerant in balanced first heat exchanger tube and the second heat exchanger tube, ensure that the equilibrium of first circulatory system and the second circulatory system heat; When first circulatory system and second circulatory system are run in different modalities, can make refrigerant carry out condensation cross cold-peace evaporation overheated, realize dual lifting effect, thus effectively improve the Energy Efficiency Ratio of this VRF Air Conditioning System.Heat-exchanger rig 8 has various structures, and can prioritizing selection heat-exchanger rig 8 be double pipe heat exchanger, certainly can select the heat exchanger of other types, the embodiment of the present invention not be done this and limited particularly yet.
It should be noted that, in heat-exchanger rig 8, the refrigerant in the refrigerant in the first heat exchanger tube and the second heat exchanger tube can only carry out exchange heat, can not carry out mass exchange.
Preferably, in the VRF Air Conditioning System that above-described embodiment provides, the first heat exchanger tube is between first throttle parts 10 and the first outdoor heat exchanger 6; Second heat exchanger tube is between second section stream unit 9 and the second outdoor heat exchanger 5.Concrete, in the VRF Air Conditioning System that above-described embodiment provides, when first circulatory system and second circulatory system all in a chiller mode or dehumidification mode run time, or one is run in a chiller mode, when another one is run with dehumidification mode, refrigerant through the first outdoor heat exchanger 6 condensation enters the first heat exchanger tube, refrigerant through the second outdoor heat exchanger 5 condensation enters the second heat exchanger tube, refrigerant in refrigerant in first heat exchanger tube and the second heat exchanger tube carries out heat exchange, balance degree of supercooling, make the degree of supercooling of two parts refrigerant more consistent, be conducive to the Energy Efficiency Ratio improving whole VRF Air Conditioning System, when first circulatory system and second circulatory system are all run with heating mode, refrigerant through the first indoor heat exchanger 12 condensation enters the first heat exchanger tube through first throttle parts 10, refrigerant through the second indoor heat exchanger 11 condensation enters the second heat exchanger tube through second section stream unit 9, refrigerant in refrigerant in first heat exchanger tube and the second heat exchanger tube carries out heat exchange, balance degree of supercooling, make the degree of supercooling of two parts refrigerant comparatively consistent, be conducive to the Energy Efficiency Ratio improving whole VRF Air Conditioning System, when first circulatory system in a chiller mode or dehumidification mode run, when second circulatory system is run with heating mode, refrigerant through the first outdoor heat exchanger 6 condensation enters the first heat exchanger tube, refrigerant through the second indoor heat exchanger 11 condensation enters the second heat exchanger tube after second section stream unit 9 throttling, refrigerant in refrigerant in first heat exchanger tube and the second heat exchanger tube carries out heat exchange, make the refrigerant in the second heat exchanger tube overheated further, improve the degree of superheat, refrigerant in first heat exchanger tube is excessively cold further, improve degree of supercooling, and then effectively improve the Energy Efficiency Ratio of whole VRF Air Conditioning System, when first circulatory system is run with heating mode, when second circulatory system in a chiller mode or dehumidification mode runs, refrigerant through the first indoor heat exchanger 12 condensation enters the first heat exchanger tube after first throttle parts 10 throttling, refrigerant through the second outdoor heat exchanger 5 condensation enters the second heat exchanger tube, refrigerant in refrigerant in first heat exchanger tube and the second heat exchanger tube carries out heat exchange, make the refrigerant in the first heat exchanger tube overheated further, improve the degree of superheat, refrigerant in second heat exchanger tube is excessively cold further, improve degree of supercooling, and then effectively improve the Energy Efficiency Ratio of whole VRF Air Conditioning System.
Preferably, the VRF Air Conditioning System that above-described embodiment provides, also comprise oil eliminator 2, the gas outlet of this oil eliminator 2 is connected with the second cross valve 3 with the first cross valve 4 respectively, the import of oil eliminator 2 is connected with the exhaust outlet of compressor 1, and the liquid outlet of oil eliminator 2 is connected with the air entry of compressor 1.Like this, by oil eliminator 2 by the lubricating oil separation in refrigerant, thus effectively improve the service behaviour of this VRF Air Conditioning System.
In the VRF Air Conditioning System that above-described embodiment provides, VRF Air Conditioning System is one drag two air-conditioner set or an one driven multiple air conditioner group.In actual application, arrange according to demand, the number of the first indoor heat exchanger 12 and the number of the second indoor heat exchanger 11 separate, do not influence each other.
In the VRF Air Conditioning System that above-described embodiment provides, first throttle parts 10 and second section stream unit 9 are electric expansion valve or capillary.Also can select, first throttle parts 10 and second section stream unit 9, wherein one is electric expansion valve, and another one is capillary.Certainly, first throttle parts 10 and second section stream unit 9 also can be other throttle parts, and the embodiment of the present invention is not done this and limited particularly.
In order to reduce volume, the VRF Air Conditioning System that above-described embodiment provides, also comprise integrated housing 7, second outdoor heat exchanger 5 with two heat exchanging chambers and be positioned at a heat exchanging chamber, the first outdoor heat exchanger 6 is positioned at another heat exchanging chamber.Like this, the first outdoor heat exchanger 6 and the second outdoor heat exchanger 5 are integrated in integrated housing 7, form an overall off-premises station, effectively reduce volume, facilitate installation and the conveying of off-premises station.Preferably, two heat exchanging chambers can carry out heat exchange, then the first outdoor heat exchanger 6 and the second outdoor heat exchanger 5 can carry out heat exchange, thus to evaporation process add after heat and condensation process add after cold, effectively improve the heat exchange efficiency of this VRF Air Conditioning System.
It should be noted that, can carry out heat exchange between two heat exchanging chambers, can not carry out heat exchange (two heat exchanging chamber heat insulations) yet, according to the actual requirements, design, the embodiment of the present invention is not done this and is limited particularly.Two heat exchanging chambers realize by the dividing plate being arranged at integrated housing 7 inside, and realize by other structures, the embodiment of the present invention is not done this and limited particularly yet.
Preferably, in the VRF Air Conditioning System that above-described embodiment provides, first valve port a1 of the first cross valve 4 is communicated with the exhaust outlet of compressor 1 respectively with the first valve port a2 of the second cross valve 3, second valve port b1 of the first cross valve 4 is communicated with the air entry of compressor 1 respectively with the second valve port b2 of the second cross valve 3,3rd valve port c1 of the first cross valve 4 is communicated with the second indoor heat exchanger 11 respectively with the 4th valve port d2 of the second cross valve 3, and the 4th valve port d1 of the first cross valve 4 is communicated with the second outdoor heat exchanger 5 respectively with the 3rd valve port c2 of the second cross valve 3.
It should be noted that, the first cross valve 4 is identical, concrete with the structure of the second cross valve 3, and when the first cross valve 4 is charged, the first valve port a1 is communicated with the 3rd valve port c1, and the second valve port b1 is communicated with the 4th valve port d1; When second cross valve 3 is charged, the first valve port a2 is communicated with the 3rd valve port c2, and the second valve port b2 is communicated with the 4th valve port d2.But, first cross valve 4 is different with the connection of the second cross valve 3, concrete, 3rd valve port c1 of the first cross valve 4 is communicated with the second indoor heat exchanger 11 respectively with the 4th valve port d2 of the second cross valve 3, and the 4th valve port d1 of the first cross valve 4 is communicated with the second outdoor heat exchanger 5 respectively with the 3rd valve port c2 of the second cross valve 3.When first circulatory system and second circulatory system all in a chiller mode or dehumidification mode run, or one need dehumidifying, another one need refrigeration time, the first cross valve 4 is not charged, and the second cross valve 3 is charged; When first circulatory system and second circulatory system are all run with heating mode, the first cross valve 4 is charged, and the second cross valve 3 is not charged; When first circulatory system in a chiller mode or dehumidification mode run, when second circulatory system is run with heating mode, the first cross valve 4 is not charged, and the second cross valve 3 is not charged; When first circulatory system is run with heating mode, when second circulatory system in a chiller mode or dehumidification mode runs, the first cross valve 4 is charged, and the second cross valve 3 is charged.
In the VRF Air Conditioning System that above-described embodiment provides, first cross valve 4 is identical with the structure of the second cross valve 3, also the first cross valve 4 can be selected identical with the connected mode of the second cross valve 3, concrete, 3rd valve port c1 of the first cross valve 4 is communicated with the second indoor heat exchanger 11 respectively with the 3rd valve port c2 of the second cross valve 3, and the 4th valve port d1 of the first cross valve 4 is communicated with the second outdoor heat exchanger 5 respectively with the 4th valve port d2 of the second cross valve 3.When first circulatory system and second circulatory system all in a chiller mode or dehumidification mode run, or one need dehumidifying, another one need refrigeration time, the first cross valve 4 and the second cross valve 3 all not charged; When first circulatory system and second circulatory system are all run with heating mode, the first cross valve 4 and the second cross valve 3 all charged; When first circulatory system in a chiller mode or dehumidification mode run, when second circulatory system is run with heating mode, the first cross valve 4 is not charged, and the second cross valve 3 is charged; When first circulatory system is run with heating mode, when second circulatory system in a chiller mode or dehumidification mode runs, the first cross valve 4 is charged, and the second cross valve 3 is not charged.
Based on the VRF Air Conditioning System that above-described embodiment provides, the embodiment of the present invention additionally provides a kind of control method of VRF Air Conditioning System, wherein, VRF Air Conditioning System comprises step for the VRF Air Conditioning System described in above-described embodiment, the control method of this VRF Air Conditioning System:
When first circulatory system and second circulatory system all need to freeze or dehumidify, or in first circulatory system and second circulatory system, one needs dehumidifying, when another one needs to freeze, the 4th valve port d1 of the first cross valve 4 is communicated with the exhaust outlet of compressor 1 respectively with the 3rd valve port c2 of the second cross valve 3;
When first circulatory system needs dehumidifying or refrigeration, when second circulatory system needs to heat, the 4th valve port d1 of the first cross valve 4 is communicated with the exhaust outlet of compressor 1 respectively with the 4th valve port d2 of the second cross valve 3;
When first circulatory system needs to heat, when second circulatory system needs dehumidifying or freezes, the 3rd valve port c1 of the first cross valve 4 is communicated with the exhaust outlet of described compressor 1 respectively with the 3rd valve port c2 of the second cross valve 3;
When first circulatory system and second circulatory system all need to heat, the 3rd valve port c1 of the first cross valve 4 is communicated with the exhaust outlet of compressor 1 respectively with the 4th valve port d2 of the second cross valve 3.
Due to the first cross valve 4 charged time, the first valve port a1 is communicated with the 3rd valve port c1, and the second valve port b1 is communicated with the 4th valve port d1; When second cross valve 3 is charged, first valve port a2 is communicated with the 3rd valve port c2, second valve port b2 is communicated with the 4th valve port d2, the then control method of VRF Air Conditioning System that provides of above-described embodiment, charged by controlling the first cross valve 4, control first circulatory system to run with heating mode, not charged by controlling the first cross valve 4, control first circulatory system in a chiller mode or dehumidification mode run; Charged by controlling the second cross valve 3, control second circulatory system in a chiller mode or dehumidification mode run, not charged by controlling the second cross valve 3, control second circulatory system and run with heating mode.
The control method of the VRF Air Conditioning System that above-described embodiment provides, by changing the conducting direction of the first cross valve 4 and the second cross valve 3, achieves the control to first circulatory system and the second circulatory system operational mode.Due to the first cross valve 4 and the second cross valve 3 relatively independent, can control respectively, thus first circulatory system and second circulatory system can be made simultaneously to run in different modalities, and then the instructions for use of user can be met.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a VRF Air Conditioning System, comprises first circulatory system, and described first circulatory system comprises: compressor (1), the first cross valve (4), the first indoor heat exchanger (12), first throttle parts (10), the first outdoor heat exchanger (6); It is characterized in that, described VRF Air Conditioning System also comprises: second circulatory system, and described second circulatory system comprises: described compressor (1), the second cross valve (3), the second indoor heat exchanger (11), second section stream unit (9), the second outdoor heat exchanger (5); Wherein, four valve ports of described second cross valve (3) are communicated with described second indoor heat exchanger (11) with the exhaust outlet of the air entry of described compressor (1), described compressor (1), described second outdoor heat exchanger (5) respectively, and described second indoor heat exchanger (11) is connected by described second section stream unit (9) with described second outdoor heat exchanger (5).
2. VRF Air Conditioning System as claimed in claim 1, it is characterized in that, also comprise heat-exchanger rig (8), described heat-exchanger rig (8) comprising: housing, and is positioned at described enclosure interior and can carries out the first heat exchanger tube and second heat exchanger tube of heat exchange; Described first heat exchanger tube is arranged in series between described first throttle parts (10) and described first cross valve (4); Described second heat exchanger tube is arranged in series between described second section stream unit (9) and described second cross valve (3).
3. VRF Air Conditioning System as claimed in claim 2, it is characterized in that, described heat-exchanger rig (8) is double pipe heat exchanger.
4. VRF Air Conditioning System as claimed in claim 1, it is characterized in that, also comprise oil eliminator (2), the gas outlet of described oil eliminator (2) is communicated with described second cross valve (3) with described first cross valve (4) respectively, the import of described oil eliminator (2) is communicated with the exhaust outlet of described compressor (1), and the liquid outlet of described oil eliminator (2) is communicated with the air entry of described compressor (1).
5. VRF Air Conditioning System as claimed in claim 1, it is characterized in that, described VRF Air Conditioning System is one drag two air-conditioner set or an one driven multiple air conditioner group.
6. VRF Air Conditioning System as claimed in claim 1, it is characterized in that, described first throttle parts (10) and second section stream unit (9) are electric expansion valve or capillary.
7. VRF Air Conditioning System as claimed in claim 1, it is characterized in that, also comprise the integrated housing (7) with two heat exchanging chambers, described second outdoor heat exchanger (5) is positioned at a described heat exchanging chamber, and described first outdoor heat exchanger (6) is positioned at heat exchanging chamber described in another.
8. as the VRF Air Conditioning System in claim 1-7 as described in any one, it is characterized in that, first valve port a1 of described first cross valve (4) is communicated with the exhaust outlet of described compressor (1) respectively with the first valve port a2 of described second cross valve (3), second valve port b1 of described first cross valve (4) is communicated with the air entry of described compressor (1) respectively with the second valve port b2 of described second cross valve (3), 3rd valve port c1 of described first cross valve (4) is communicated with described second indoor heat exchanger (11) respectively with the 4th valve port d2 of described second cross valve (3), 4th valve port d1 of described first cross valve (4) is communicated with described second outdoor heat exchanger (5) respectively with the 3rd valve port c2 of described second cross valve (3).
9. a control method for VRF Air Conditioning System as claimed in claim 8, is characterized in that, comprises step:
When described first circulatory system and described second circulatory system all need to freeze or dehumidify, or in described first circulatory system and described second circulatory system, one needs dehumidifying, when another one needs to freeze, the 4th valve port d1 of described first cross valve (4) is communicated with the exhaust outlet of described compressor (1) respectively with the 3rd valve port c2 of described second cross valve (3);
When described first circulatory system needs dehumidifying or refrigeration, when described second circulatory system needs to heat, the 4th valve port d1 of described first cross valve (4) is communicated with the exhaust outlet of described compressor (1) respectively with the 4th valve port d2 of described second cross valve (3);
When described first circulatory system needs to heat, when described second circulatory system needs dehumidifying or freezes, the 3rd valve port c1 of described first cross valve (4) is communicated with the exhaust outlet of described compressor (1) respectively with the 3rd valve port c2 of described second cross valve (3);
When described first circulatory system and described second circulatory system all need to heat, the 3rd valve port c1 of described first cross valve (4) is communicated with the exhaust outlet of described compressor (1) respectively with the 4th valve port d2 of described second cross valve (3).
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