CN105650769A - Multi-split radiation type central air conditioning system with variable refrigerant flow - Google Patents

Multi-split radiation type central air conditioning system with variable refrigerant flow Download PDF

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Publication number
CN105650769A
CN105650769A CN201610159784.1A CN201610159784A CN105650769A CN 105650769 A CN105650769 A CN 105650769A CN 201610159784 A CN201610159784 A CN 201610159784A CN 105650769 A CN105650769 A CN 105650769A
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China
Prior art keywords
way valve
cooler
indoor
furthermore
water
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CN201610159784.1A
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CN105650769B (en
Inventor
李国胜
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Zhongan Ruili (Beijing) Technology Co., Ltd.
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李国胜
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Priority to CN201510718210 priority
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves

Abstract

The invention relates to the field of air conditioners, in particular to a multi-split radiation type central air conditioning system with variable refrigerant flow. The multi-split radiation type central air conditioning system comprises a central control unit, a plurality of indoor units, a plurality of outdoor units and a plurality of indoor radiation tail ends. The multiple indoor units are connected in series. The multiple outdoor units are connected in series. The multiple indoor radiation tail ends are connected in parallel. The central control unit is in signal connection with the multiple indoor units and the multiple outdoor units. The multiple outdoor units are connected with the multiple indoor units in series and then connected with the multiple indoor radiation tail ends in series. According to the multi-split radiation type central air conditioning system with variable refrigerant flow, the multiple indoor units and the multiple outdoor units are controlled through the central control unit, accordingly the control area of the whole radiation type air conditioning system is enlarged, meanwhile, the whole radiation type air conditioning system can be convenient to control, and operation becomes easier and more convenient.

Description

The one of a kind of variable refrigerant volume drags many radiant types central air conditioner system
Technical field
The present invention relates to field of air conditioning, drag many radiant types central air conditioner system in particular to the one of a kind of variable refrigerant volume.
Background technology
The advantages such as air-conditioning system is comfortable with it, energy-saving and environmental protection are increasingly approved by market, but owing to the technical difficulty of air-conditioning system is bigger, during summer cooling, radiating surface has the risk of condensation etc., therefore promote and be subject to certain limitation, system support is unsound in addition, involved device category is many, controls logic complicated, and easily breaks down. System equipment in existing market installs complexity, debugging complexity, controls complexity, and the suitability of equipment has limitation, it is necessary to professional designer is designed installing.
Summary of the invention
It is an object of the invention to provide the one of a kind of variable refrigerant volume and drag many radiant types central air conditioner system, to solve above-mentioned problem.
Provide the one of a kind of variable refrigerant volume in an embodiment of the present invention and drag many radiant types central air conditioner system, including central controller, multiple indoor set, multiple off-premises station and multiple indoor radiation tail end;
It is serially connected between multiple described indoor sets;
It is serially connected between multiple described off-premises stations;
Multiple described indoor radiation tail ends are parallel with one another;
Described central controller is connected with multiple described indoor sets, multiple described off-premises station signal respectively;
Multiple described off-premises stations are connected with multiple described indoor sets, then connect respectively with multiple described indoor radiation tail ends.
Further, described indoor set includes the gentle blood circulation of water circulation system;
Described water circulation system and described gas blood circulation are all connected with described off-premises station;
Described indoor radiation tail end is connected with described water circulation system;
Preferably, described gas blood circulation includes centrifugal blower, surface cooler and connecting line;
Described centrifugal blower is arranged on the side of described surface cooler, it is possible to change, by the surface temperature of described surface cooler, the air themperature that described centrifugal blower blows;
Described surface cooler is connected with gas blood circulation other described by described connecting line;
It is furthermore preferred that described centrifugal blower is frequency conversion EC blower fan or DC blower fan;
It is furthermore preferred that described surface cooler includes the first surface cooler and the second surface cooler;
It is provided with the first electric expansion valve between described first surface cooler and described second surface cooler;
It is furthermore preferred that between described first electric expansion valve and described first surface cooler, be provided with the first device for drying and filtering between described first electric expansion valve and described second surface cooler;
It is furthermore preferred that described surface cooler is provided with temperature sensor;
It is furthermore preferred that described surface cooler is provided with humidity sensor away from the side of described centrifugal blower;
It is furthermore preferred that described first surface cooler and described second surface cooler are copper aluminum fin-stock heat exchanger, shell and tube exchanger or microchannel plate type heat exchanger;
Preferably, described connecting line is provided with the first ratio three-way valve, is used for connecting adjacent two described gas blood circulation and reflux pipe;
It is furthermore preferred that described first ratio three-way valve is proportional integral three-way valve;
It is furthermore preferred that the material of described first ratio three-way valve is copper.
Further, described water circulation system includes fluorine water-to-water heat exchanger;
First loop of described fluorine water-to-water heat exchanger connects described indoor radiation tail end;
The second servo loop of described fluorine water-to-water heat exchanger connects described off-premises station;
Preferably, described fluorine water-to-water heat exchanger be plate type heat exchanger, shell and tube exchanger or microchannel plate type heat exchanger;
Preferably, the connecting water pipe connected with described second servo loop is provided with the second electric expansion valve;
It is furthermore preferred that the two ends of described second electric expansion valve are provided with the second device for drying and filtering;
It is furthermore preferred that with the connecting water pipe of described first circuit communication on be provided with circulation power water pump;
It is furthermore preferred that the connecting water pipe connected with described second servo loop is provided with the second ratio three-way valve, it is used for connecting multiple described water circulation system;
It is furthermore preferred that described second ratio three-way valve is proportional integral three-way valve;
It is furthermore preferred that the material of described second ratio three-way valve is copper.
Further, described off-premises station includes blower fan, the 3rd surface cooler and power circulation system;
Described 3rd surface cooler connects with described power circulation system;
Described blower fan is arranged on the side of described 3rd surface cooler, it is possible to changed the temperature of the air that described blower fan send by described 3rd surface cooler;
Preferably, described blower fan is multiple parallel connection;
It is furthermore preferred that described blower fan is axial flow blower;
Preferably, described 3rd surface cooler is multiple being arranged in series;
It is furthermore preferred that one end, loop of described 3rd surface cooler series connection is provided with the 3rd electric expansion valve;
It is furthermore preferred that the two ends of described 3rd electric expansion valve are provided with the 3rd device for drying and filtering.
Further, described power circulation system includes compressor and oil return system;
After described compressor is in parallel with described oil return system, connect with described current transformer;
Preferably, described compressor is frequency-changeable compressor;
Preferably, the two ends of described compressor are respectively arranged with high-voltage switch gear and low tension switch;
Preferably, also include four-way change-over valve, be respectively communicated with the two ends of described surface cooler, described indoor set and described compressor;
It is furthermore preferred that also include the 3rd ratio three-way valve;
Described 3rd ratio three-way valve connects with described four-way change-over valve, one end of described oil return system and described indoor set respectively;
It is furthermore preferred that described 3rd ratio three-way valve is proportional integral three-way valve;
It is furthermore preferred that the material of described 3rd ratio three-way valve is copper;
It is furthermore preferred that also include the first electric two-way valve, the second electric two-way valve, the 3rd electric two-way valve and the 4th electric two-way valve;
Described first electric two-way valve one end connects one end of the 3rd ratio three-way valve, and the other end connects described indoor set and enters and one end of described 4th electric two-way valve;
One end of second electric two-way valve connects one end of described 3rd ratio threeway, and the other end connects one end of described indoor set and described 3rd electric two-way valve;
One end of described 3rd electric two-way valve connects the other end of described second electric two-way valve and described indoor set, and the other end of described 3rd electric two-way valve connects the other end of described 4th electric two-way valve and the other end of described oil return system.
Further, described central controller includes central control board, indoor set panel and off-premises station panel;
Described central control board is connected with described indoor set panel and off-premises station panel respectively.
Further, described central controller is reserved with WIFI, Zigbee, Z-wave, bluetooth and/or infrared interface, it is possible to carry out compatibility with ancillary equipment, it is achieved remote transmission, remotely control, remote on-line monitoring, remote debugging.
Further, the communication modes wire communication of described central controller, wifi radio communication, zigbee radio communication and/or Z-WAVE wireless telecommunications, 3G communication, 4G communication.
Further, the water inlet end of described indoor radiation tail end is provided with cooling-water temperature sensor.
Further, described indoor radiation tail end is end face radiant panel, capillary bed, radiant wall plate, terrestrial surface radiation plate and/or structure buried tube type radiating surface.
The one of a kind of variable refrigerant volume provided by the invention drags many radiant types central air conditioner system, by central controller being controlled multiple indoor set and multiple off-premises station, and then add the control area of whole radiant type central air conditioner system, also simultaneously facilitate and whole radiant type central air conditioner system is controlled, make operation become more simple and convenient.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation that the one of a kind of variable refrigerant volume of the present invention drags many radiant types central air conditioner system;
Fig. 2 is the cooling in summer dehumidifying operating mode operation flow chart that the one of a kind of variable refrigerant volume of the present invention drags many radiant types central air conditioner system;
Fig. 3 is the winter heating operating mode operation flow chart that the one of a kind of variable refrigerant volume of the present invention drags many radiant types central air conditioner system;
Fig. 4 is Flos Jasmini Nudiflori heating in the season dehumidifying operating mode operation flow chart that the one of a kind of variable refrigerant volume of the present invention drags many radiant types central air conditioner system.
Accompanying drawing labelling:
1, central control board; 2, data line; 3, off-premises station panel; 4, the 3rd surface cooler; 5, axial flow blower; 6, four-way change-over valve; 7, the 3rd ratio three-way valve; 8, the 3rd device for drying and filtering; 9, the 3rd electric expansion valve; 10, oil return system; 11, low tension switch; 12, compressor; 13, high-voltage switch gear; 14, indoor radiation tail end; 15, cooling-water temperature sensor; 16, the 4th ratio three-way valve; 17, power cycle water pump; 18, fluorine water-to-water heat exchanger; 19, the second device for drying and filtering;20, the second electric expansion valve; 21, water loop control plate; 22, the second ratio three-way valve; 23, the 4th electric two-way valve; 24, the 3rd electric two-way valve; 25, the second electric two-way valve; 26, the first electric two-way valve; 27, humidity sensor; 28, the first device for drying and filtering; 29, the first electric expansion valve; 30, temperature sensor; 31, the first surface cooler; 32, the first ratio three-way valve; 33, the second surface cooler; 34, centrifugal blower; 35, gas loop control plate.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, technical scheme will be carried out clear, complete description below. Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art are obtained under the premise not making creative work, broadly fall into the scope that the present invention protects.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be for only for ease of the description present invention and simplifying and describe; rather than instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention. Additionally, term " first ", " second ", " the 3rd " are only for descriptive purposes, and it is not intended that indicate or hint relative importance.
In describing the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly; Can be mechanically connected, it is also possible to be electrical connection; Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals. For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in the present invention.
As shown in accompanying drawing 1-4, the invention provides the one of a kind of variable refrigerant volume and drag many radiant types central air conditioner system, including central controller, multiple indoor set, multiple off-premises station and multiple indoor radiation tail end 14;
It is serially connected between multiple described indoor sets;
It is serially connected between multiple described off-premises stations;
Multiple described indoor radiation tail ends 14 are parallel with one another;
Described central controller is connected with multiple described indoor sets, multiple described off-premises station signal respectively;
Multiple described off-premises stations are connected with multiple described indoor sets, then connect respectively with multiple described indoor radiation tail ends 14.
Further, described indoor set includes the gentle blood circulation of water circulation system;
Described water circulation system and described gas blood circulation are all connected with described off-premises station;
Described indoor radiation tail end 14 is connected with described water circulation system;
Preferably, described gas blood circulation includes centrifugal blower 34, surface cooler and connecting line;
Described centrifugal blower 34 is arranged on the side of described surface cooler, it is possible to change, by the surface temperature of described surface cooler, the air themperature that described centrifugal blower 34 blows;
Described surface cooler is connected with gas blood circulation other described by described connecting line;
It is furthermore preferred that described centrifugal blower 34 is frequency conversion EC blower fan or DC blower fan;
It is furthermore preferred that described surface cooler includes the first surface cooler 31 and the second surface cooler 33;
It is provided with the first electric expansion valve 29 between described first surface cooler 31 and described second surface cooler 33;
It is furthermore preferred that between described first electric expansion valve 29 and described first surface cooler 31, be provided with the first device for drying and filtering 28 between described first electric expansion valve 29 and described second surface cooler 33;
It is furthermore preferred that described surface cooler is provided with temperature sensor 30;
It is furthermore preferred that described surface cooler is provided with humidity sensor 27 away from the side of described centrifugal blower 34;
It is furthermore preferred that described first surface cooler 31 and described second surface cooler 33 are copper aluminum fin-stock heat exchanger, shell and tube exchanger or microchannel plate type heat exchanger;
Preferably, described connecting line is provided with the first ratio three-way valve 32, is used for connecting adjacent two described gas blood circulation and reflux pipe;
It is furthermore preferred that described first ratio three-way valve 32 is proportional integral three-way valve;
It is furthermore preferred that the material of described first ratio three-way valve 32 is copper.
Further, described water circulation system includes fluorine water-to-water heat exchanger 18;
First loop of described fluorine water-to-water heat exchanger 18 connects described indoor radiation tail end 14;
The second servo loop of described fluorine water-to-water heat exchanger 18 connects described off-premises station;
Preferably, described fluorine water-to-water heat exchanger 18 be plate type heat exchanger, shell and tube exchanger or microchannel plate type heat exchanger;
Preferably, the connecting water pipe connected with described second servo loop is provided with the second electric expansion valve 20;
It is furthermore preferred that the two ends of described second electric expansion valve 20 are provided with the second device for drying and filtering 19;
It is furthermore preferred that with the connecting water pipe of described first circuit communication on be provided with circulation power water pump;
It is additionally provided with the 4th ratio three-way valve 16, for forming an independent loop to indoor radiation tail end 14 with on the connecting water pipe of described first circuit communication.
It is furthermore preferred that the connecting water pipe connected with described second servo loop is provided with the second ratio three-way valve 22, it is used for connecting multiple described water circulation system;
It is furthermore preferred that described second ratio three-way valve 22 is proportional integral three-way valve;
It is furthermore preferred that the material of described second ratio three-way valve 22 is copper.
Further, described off-premises station includes blower fan, the 3rd surface cooler 4 and power circulation system;
Described 3rd surface cooler 4 connects with described power circulation system;
Described blower fan is arranged on the side of described 3rd surface cooler 4, it is possible to changed the temperature of the air that described blower fan send by described 3rd surface cooler 4;
Preferably, described blower fan is multiple parallel connection;
It is furthermore preferred that described blower fan is axial flow blower 5;
Preferably, described 3rd surface cooler 4 is arranged in series for multiple;
It is furthermore preferred that one end, loop of described 3rd surface cooler 4 series connection is provided with the 3rd electric expansion valve 9;
It is furthermore preferred that the two ends of described 3rd electric expansion valve 9 are provided with the 3rd device for drying and filtering 8.
Further, described power circulation system includes compressor 12 and oil return system 10;
After described compressor 12 is in parallel with described oil return system 10, connect with described current transformer;
Preferably, described compressor 12 is frequency-changeable compressor 12;
Preferably, the two ends of described compressor 12 are respectively arranged with high-voltage switch gear 13 and low tension switch 11;
Preferably, also include four-way change-over valve 6, be respectively communicated with the two ends of described surface cooler, described indoor set and described compressor 12;
It is furthermore preferred that also include the 3rd ratio three-way valve 7;
Described 3rd ratio three-way valve 7 connects with described four-way change-over valve 6, one end of described oil return system 10 and described indoor set respectively;
It is furthermore preferred that described 3rd ratio three-way valve 7 is proportional integral three-way valve;
It is furthermore preferred that the material of described 3rd ratio three-way valve 7 is copper;
It is furthermore preferred that also include the first electric two-way valve the 26, second electric two-way valve the 25, the 3rd electric two-way valve 24 and the 4th electric two-way valve 23;
Described first electric two-way valve 26 one end connects one end of the 3rd ratio three-way valve 7, and the other end connects described indoor set and enters and one end of described 4th electric two-way valve 23;
One end of second electric two-way valve 25 connects one end of described 3rd ratio threeway, and the other end connects one end of described indoor set and described 3rd electric two-way valve 24;
One end of described 3rd electric two-way valve 24 connects the other end of described second electric two-way valve 25 and described indoor set, and the other end of described 3rd electric two-way valve 24 connects the other end of described 4th electric two-way valve 23 and the other end of described oil return system 10.
Further, described central controller includes central control board 1, indoor set panel and off-premises station panel 3;
Described central control board 1 is connected with described indoor set panel and off-premises station panel 3 respectively.
Indoor set panel also distinguishes the gentle loop control plate 35 of water loop control plate 21, and the circulating part being respectively used to control indoor set divides gentle cyclic part.
Further, described central controller is reserved with WIFI, Zigbee, Z-wave, bluetooth and/or infrared interface, it is possible to carry out compatibility with ancillary equipment, it is achieved remote transmission, remotely control, remote on-line monitoring, remote debugging.
Further, the communication modes wire communication of described central controller, wifi radio communication, zigbee radio communication and/or Z-WAVE wireless telecommunications, 3G communication, 4G communication.
Central controller comprises wire communication, 2.4G wireless telecommunications such as wifi wireless communication module, zigbee wireless communication module and/or Z-WAVE wireless communication module, 3G, 4G communication module or combination in any therein, to realize the purpose of remotely control.
Central controller comprises the communication being arranged on unit and accepts transmitter module, terminal control software. User can pass through terminal control software and realizes the remotely monitoring to equipment or system and regulate.
Further, the water inlet end of described indoor radiation tail end 14 is provided with cooling-water temperature sensor 15.
The water temperature of indoor radiation tail end can be monitored in real time by cooling-water temperature sensor.
Further, described indoor radiation tail end 14 is end face radiant panel, capillary bed, radiant wall plate, terrestrial surface radiation plate and/or structure buried tube type radiating surface.
Capillary bed or radiant panel is used to have a lot of advantages, as:
High degree of comfort. Through practice have shown that, radiation is the heat transfer type that comfortableness is the highest. And the cold of capillary bed or radiant panel air conditioning terminal system 60% and heat are all undertaken by the mode radiated, thus higher compared with the Terminal device comfort level of other forms.
Adopting the only small parallelpiped of spacing or serial pipe composition due to radiant panel or capillary bed, be uniformly distributed, heat radiation exchange area is big especially, so indoor temperature is highly uniform. Hot/cold radiating surface is substantially free of temperature contrast. And the form of the heat exchange in human body and space mainly radiation carries out, and this static refrigeration and naturally warm environment make human body feel as snug as a bug in a rug, and the temperature that health is felt is higher 2��3 DEG C than room temperature.This point can additionally achieve the purpose saving the energy. Each room adopts alone cycle structure, therefore can individually control each room temperature by being arranged on the climator in room.
The most quietly Terminal device. (there are the indoor sport parts such as motor, blower fan in fan coil compared with traditional fan coil, therefore, the noise of about 35��45dB can be produced), indoor radiation tail end 14 does not have indoor sport parts, any room noise will not be produced, be the most quiet air conditioning system.
Indoor do not condense water pond, are absent from bacteria breed source. Indoor radiation tail end 14 is embedded in furred ceiling or within the walls or be hung directly from ceiling, mainly by radiant heat transfer to building cooling or heat supply, indoor do not have condensate system compared with fan coil, impeded drainage will not occur, cause phenomenons such as dripping. Also it is absent from breed bacteria in traditional fan coil drain pan, affects the phenomenon of indoor sanitation condition.
Energy-saving effect is notable. The supply water temperature in summer of generally indoor radiation tail end 14 is 7-20 degree, and the supply water temperature in winter is 25-40 degree, has supply water temperature and relatively low supply water temperature in winter in higher summer relative to traditional air conditioner, can save mass energy.
Stronger cold-storage/heat storage capacity. In long period under the states such as system closedown or power failure, temperature is all without raising (summer) or reducing (winter).
Stronger self-adjusting balance ability. Summer strengthens with the radiating surface temperature difference along with the rising of indoor temperature, improves radiation cold. Winter strengthens with the radiating surface temperature difference along with the reduction of indoor temperature, improves radiations heat energy.
It is little that indoor radiation tail end 14 takies building headroom, saves space. As adopted capillary network tail-end, under the furred ceiling after levelling in air-conditioned room or on metope, first lay capillary bed, then spread the thick plaster of 5-10mm, form radiating surface. If employing radiant panel, it is only necessary to hanging on ceiling by radiant panel as ceiling board, convenience quick for installation, good looking appearance is generous. Be particularly suitable for same heat pump class Cooling and Heat Source with the use of, reach more energy efficient effect.
From the above, it is seen that include the control system of multiple outdoor machine part, multiple indoor set part, multiple indoor radiation tail end 14 and entirety. Wherein each outdoor machine part includes compressor 12, oil return apparatus, high-voltage switch gear 13, low tension switch 11, four-way change-over valve the 6, the 3rd ratio three-way valve 7, four electric two-way valves, the 3rd surface cooler 4, electric expansion valve, the 3rd device for drying and filtering 8, axial flow blowers 5; Each indoor set includes fluorine water-to-water heat exchanger the 18, second device for drying and filtering the 19, first electric expansion valve the 29, first ratio three-way valve 32, centrifugal blower 34, surface cooler, second electric expansion valve the 20, second ratio three-way valve 22, power cycle water pump 17 etc., and indoor radiation tail end 14 includes various radiant ends and the pipe-line systems thereof such as capillary bed, metal radiant panel, Gypsum Fibrosum radiant panel, cold beam. Control system includes central control board 1, off-premises station panel 3, indoor set panel, temperature sensor 30, cooling-water temperature sensor 15, data line 2 etc.
During cooling in summer dehumidifying operating mode, as shown in Figure 2, the freon of low-temp low-pressure gaseous state is after the compression of compressor 12, become the gaseous state of High Temperature High Pressure, it is divided into two-way through the 3rd ratio three-way valve 7, one tunnel enters in the part that each indoor set processes air through the first electric two-way valve 26, carries out assignment of traffic again through the first ratio three-way valve 32, distributes the flow inputting each indoor set air treatment section according to the actual demand of each indoor set.The gaseous fluorine Leon of High Temperature High Pressure enters the first surface cooler 31 therewith, it is heated heating up to the air after the second surface cooler 33 cooling, High Temperature High Pressure freon becomes the liquid of medium temperature and medium pressure, the gas-liquid mixed state of low-temp low-pressure is become after being throttled by the first electric expansion valve 29 subsequently, subsequently enter the second surface cooler 33, the freon of low-temp low-pressure absorbs heat in the second surface cooler 33, become the gaseous state of low-temp low-pressure, after enter compressor 12 through the 3rd electric two-way valve 24 and be compressed, reciprocation cycle.
Another road freon of two-way it is divided into through the 3rd ratio three-way valve 7, the 3rd surface cooler 4 is entered through four-way change-over valve 6, in the 3rd surface cooler 4, axial flow blower 5 operates, the heat exchange of accelerating chamber outer air and the 3rd surface cooler 4, the freon of the High Temperature High Pressure in the 3rd surface cooler 4 is become the liquid freon of medium temperature and medium pressure, then the liquid freon of medium temperature and medium pressure is through the 3rd device for drying and filtering 8, 3rd electric expansion valve 9, after 3rd device for drying and filtering 8, become the gas-liquid mixed state of low-temp low-pressure, freon is through ratio three-way valve subsequently, distribute to the second electric expansion valve 20 during each indoor set circulating part is divided, entering each indoor set circulating part after throttling divides middle fluorine water-to-water heat exchanger 18 to carry out heat exchange. after subsequently becoming the gaseous fluorine Leon of low-temp low-pressure, enter compressor 12 suction end through four-way change-over valve 6 and be compressed, reciprocation cycle.
The effect that so circulation is formed is: by the circulation of freon, each indoor set circulating part is made in dividing, to have prepared the high temperature cold water of cold emission in summer needs, make in each indoor set air treatment section by circulation simultaneously, air in outdoor inlet chamber is defined first degree of depth dehumidifying, the process of wet heating such as again, both well humidity had been processed, again the cold air after dehumidifying had been heated up, and made the drying-air temperature of feeding be suitable for. In the radiation tail end connected, by fluorine water-to-water heat exchanger 18, being controlled by the circulation inflow temperature in radiation tail end at 16-18 degrees centigrade, recirculated water enters through power cycle water pump 17 and forms circulation in radiation tail end, to indoor radiation cooling. Backwater regulates through the second ratio three-way valve 22, by the leaving water temperature situation of cooling-water temperature sensor 15 perception, thus regulating the ratio of unlatching, controlling the quantity of circulating water being connected in branch road with water inlet, and then controlling system leaving water temperature further accurately.
Circulation during winter heating is as it is shown on figure 3, the circulation during with cooling in summer is just the opposite.
The blood circulation principle of system is as shown in Figure 3. By the circulation of freon, the effect that can reach is: the air in outdoor inlet chamber is carried out degree of depth dehumidifying by indoor set air treatment section, carry out reheating simultaneously, the air themperature after the dehumidifying of feeding indoor is made to be suitable for, indoor set circulating part is divided and is produced indoor radiation tail end 14 by freon and dispel the heat the hot water of required low temperature, low-temperature water heating to indoor radiating, forms heating effect again through efficient indoor radiation tail end 14. Circulate and so forth, by same set of system, solve the application problem that while Flos Jasmini Nudiflori needs heating season, refrigerated dehumidification is also had demand efficiently. Simultaneously because system can introduce new wind, additionally it is possible to ensure the freshness of indoor air.
One of outstanding feature of the present invention is the operation of its Flos Jasmini Nudiflori heating in season dehumidifying operating mode, and as shown in Figure 4, it can dehumidify while heating. This kind runs, and well solves the demand being also required to dehumidifying while China Flos Jasmini Nudiflori season needing heating in encountered room.Because dehumidifying typically requires refrigeration, just the opposite with heating operation, by the invention it is possible to well solve this problem.
The one of a kind of variable refrigerant volume provided by the invention drags many radiant types central air conditioner system, by central controller being controlled multiple indoor set and multiple off-premises station, and then add the control area of whole radiant type central air conditioner system, also simultaneously facilitate and whole radiant type central air conditioner system is controlled, make operation become more simple and convenient.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit; Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (10)

1. the one of a variable refrigerant volume drags many radiant types central air conditioner system, it is characterised in that include central controller, multiple indoor set, multiple off-premises station and multiple indoor radiation tail end;
It is serially connected between multiple described indoor sets;
It is serially connected between multiple described off-premises stations;
Multiple described indoor radiation tail ends are parallel with one another;
Described central controller is connected with multiple described indoor sets, multiple described off-premises station signal respectively;
Multiple described off-premises stations are connected with multiple described indoor sets, then connect respectively with multiple described indoor radiation tail ends.
2. the one of a kind of variable refrigerant volume according to claim 1 drags many radiant types central air conditioner system, it is characterised in that described indoor set includes the gentle blood circulation of water circulation system;
Described water circulation system and described gas blood circulation are all connected with described off-premises station;
Described indoor radiation tail end is connected with described water circulation system;
Preferably, described gas blood circulation includes centrifugal blower, surface cooler and connecting line;
Described centrifugal blower is arranged on the side of described surface cooler, it is possible to change, by the surface temperature of described surface cooler, the air themperature that described centrifugal blower blows;
Described surface cooler is connected with gas blood circulation other described by described connecting line;
It is furthermore preferred that described centrifugal blower is frequency conversion EC blower fan or DC blower fan;
It is furthermore preferred that described surface cooler includes the first surface cooler and the second surface cooler;
It is provided with the first electric expansion valve between described first surface cooler and described second surface cooler;
It is furthermore preferred that between described first electric expansion valve and described first surface cooler, be provided with the first device for drying and filtering between described first electric expansion valve and described second surface cooler;
It is furthermore preferred that described surface cooler is provided with temperature sensor;
It is furthermore preferred that described surface cooler is provided with humidity sensor away from the side of described centrifugal blower;
It is furthermore preferred that described first surface cooler and described second surface cooler are copper aluminum fin-stock heat exchanger, shell and tube exchanger or microchannel plate type heat exchanger;
Preferably, described connecting line is provided with the first ratio three-way valve, is used for connecting adjacent two described gas blood circulation and reflux pipe;
It is furthermore preferred that described first ratio three-way valve is proportional integral three-way valve;
It is furthermore preferred that the material of described first ratio three-way valve is copper.
3. the one of a kind of variable refrigerant volume according to claim 2 drags many radiant types central air conditioner system, it is characterised in that described water circulation system includes fluorine water-to-water heat exchanger;
First loop of described fluorine water-to-water heat exchanger connects described indoor radiation tail end;
The second servo loop of described fluorine water-to-water heat exchanger connects described off-premises station;
Preferably, described fluorine water-to-water heat exchanger be plate type heat exchanger, shell and tube exchanger or microchannel plate type heat exchanger;
Preferably, the connecting water pipe connected with described second servo loop is provided with the second electric expansion valve;
It is furthermore preferred that the two ends of described second electric expansion valve are provided with the second device for drying and filtering;
It is furthermore preferred that with the connecting water pipe of described first circuit communication on be provided with circulation power water pump;
It is furthermore preferred that the connecting water pipe connected with described second servo loop is provided with the second ratio three-way valve, it is used for connecting multiple described water circulation system;
It is furthermore preferred that described second ratio three-way valve is proportional integral three-way valve;
It is furthermore preferred that the material of described second ratio three-way valve is copper.
4. the one of a kind of variable refrigerant volume according to claim 1 drags many radiant types central air conditioner system, it is characterised in that described off-premises station includes blower fan, the 3rd surface cooler and power circulation system;
Described 3rd surface cooler connects with described power circulation system;
Described blower fan is arranged on the side of described 3rd surface cooler, it is possible to changed the temperature of the air that described blower fan send by described 3rd surface cooler;
Preferably, described blower fan is multiple parallel connection;
It is furthermore preferred that described blower fan is axial flow blower;
Preferably, described 3rd surface cooler is multiple being arranged in series;
It is furthermore preferred that one end, loop of described 3rd surface cooler series connection is provided with the 3rd electric expansion valve;
It is furthermore preferred that the two ends of described 3rd electric expansion valve are provided with the 3rd device for drying and filtering.
5. the one of a kind of variable refrigerant volume according to claim 4 drags many radiant types central air conditioner system, it is characterised in that described power circulation system includes compressor and oil return system;
After described compressor is in parallel with described oil return system, connect with described current transformer;
Preferably, described compressor is frequency-changeable compressor;
Preferably, the two ends of described compressor are respectively arranged with high-voltage switch gear and low tension switch;
Preferably, also include four-way change-over valve, be respectively communicated with the two ends of described surface cooler, described indoor set and described compressor;
It is furthermore preferred that also include the 3rd ratio three-way valve;
Described 3rd ratio three-way valve connects with described four-way change-over valve, one end of described oil return system and described indoor set respectively;
It is furthermore preferred that described 3rd ratio three-way valve is proportional integral three-way valve;
It is furthermore preferred that the material of described 3rd ratio three-way valve is copper;
It is furthermore preferred that also include the first electric two-way valve, the second electric two-way valve, the 3rd electric two-way valve and the 4th electric two-way valve;
Described first electric two-way valve one end connects one end of the 3rd ratio three-way valve, and the other end connects described indoor set and enters and one end of described 4th electric two-way valve;
One end of second electric two-way valve connects one end of described 3rd ratio threeway, and the other end connects one end of described indoor set and described 3rd electric two-way valve;
One end of described 3rd electric two-way valve connects the other end of described second electric two-way valve and described indoor set, and the other end of described 3rd electric two-way valve connects the other end of described 4th electric two-way valve and the other end of described oil return system.
6. the one of a kind of variable refrigerant volume according to claim 1 drags many radiant types central air conditioner system, it is characterised in that described central controller includes central control board, indoor set panel and off-premises station panel;
Described central control board is connected with described indoor set panel and off-premises station panel respectively.
7. the one of a kind of variable refrigerant volume according to claim 1 drags many radiant types central air conditioner system, it is characterized in that, described central controller is reserved with WIFI, Zigbee, Z-wave, bluetooth and/or infrared interface, compatibility can be carried out, it is achieved remote transmission, remotely control, remote on-line monitoring, remote debugging with ancillary equipment.
8. the one of a kind of variable refrigerant volume according to claim 1 drags many radiant types central air conditioner system, it is characterized in that, the communication modes wire communication of described central controller, wifi radio communication, zigbee radio communication and/or Z-WAVE wireless telecommunications, 3G communication, 4G communication.
9. the one of a kind of variable refrigerant volume according to claim 1 drags many radiant types central air conditioner system, it is characterised in that the water inlet end of described indoor radiation tail end is provided with cooling-water temperature sensor.
10. of a kind of variable refrigerant volume according to any one of claim 1-9 drags many radiant types central air conditioner system, it is characterized in that, described indoor radiation tail end is end face radiant panel, capillary bed, radiant wall plate, terrestrial surface radiation plate and/or structure buried tube type radiating surface.
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