CN104515318A - Air conditioning system - Google Patents

Air conditioning system Download PDF

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Publication number
CN104515318A
CN104515318A CN201310461621.5A CN201310461621A CN104515318A CN 104515318 A CN104515318 A CN 104515318A CN 201310461621 A CN201310461621 A CN 201310461621A CN 104515318 A CN104515318 A CN 104515318A
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CN
China
Prior art keywords
heat exchanger
valve
port
conditioning system
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310461621.5A
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Chinese (zh)
Other versions
CN104515318B (en
Inventor
周中华
韩雷
郭瑞安
李潇
吴会丽
谢惠媚
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201310461621.5A priority Critical patent/CN104515318B/en
Publication of CN104515318A publication Critical patent/CN104515318A/en
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Publication of CN104515318B publication Critical patent/CN104515318B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14Heat exchangers specially adapted for separate outdoor units
    • F24F1/16Arrangement or mounting thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles
    • F25B47/022Defrosting cycles hot gas defrosting
    • F25B47/025Defrosting cycles hot gas defrosting by reversing the cycle

Abstract

The invention provides an air conditioning system. The air conditioning system comprises a compressor, a four-way valve, an outdoor heat exchanger, a first throttling element, an indoor heat exchanger and a first heat exchanger which are sequentially connected to form a refrigerating loop; the first heat exchanger comprises two independent flowing channels, namely, a first flowing channel and a second flowing channel; the first flowing channel is formed between a first end port and a second end port of the first heat exchanger, and while the second flowing channel is formed between a third end port and a fourth end port; the four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, wherein the first valve port communicates with the second end port, the second valve port communicates with the outdoor heat exchanger, the third valve port communicates with the exhaust end of the compressor, and a fourth valve port communicates with the indoor heat exchanger; the first flowing channel is connected in series between the first valve port and the air inlet end of the compressor; the second flowing channel is connected in series between the outdoor heat exchanger and the first throttling element, or the second flowing channel is connected in series with the second throttling element and then is connected in parallel with the outdoor heat exchanger. According to the air conditioning system, the first heat exchanger replaces the indoor heat exchanger to finish the whole thermodynamic cycle during defrosting, and thus a heat pump type air conditioning system can be quickly defrosted.

Description

Air-conditioning system
Technical field
The present invention relates to refrigerating field, particularly relate to a kind of air-conditioning system realizing continuous heating.
Background technology
Under continuous heating endless form, existing air-conditioning system often through heat-storing material absorption heat and release heat and reach the object of continuous heating, but adopt the form of accumulation of heat to reach continuous defrost and there is following possible hidden danger: 1) heat-storing material amount of stored heat is not enough, cause lacking heat in continuous heating defrost process, what cause compressor returns gas carrying liquid and the compressor that weares and teares; 2) through to type test determination of the same type, the leaving air temp effect of accumulation of heat defrost mode is undesirable, defrost periods during this period of time in, have half the time leaving air temp and EAT to be more or less the same, do not have heat to blow out, during defrost, heating effect is poor; 3) the accumulation of heat substantive requirements of form redesign regenerative apparatus, and external machine structural adjustment is large, heat-storing material type selecting and heat storage tank complex structural designs in addition, have leakage, the long-term hidden danger such as rotten exists.
Summary of the invention
In view of the present situation of prior art, the object of the present invention is to provide a kind of air-conditioning system, make heat pump type air conditioner can realize fast defrosting to frost layer on outdoor heat exchanger.For achieving the above object, technical scheme of the present invention is as follows:
A kind of air-conditioning system, comprise off-premises station and indoor set, described off-premises station comprises compressor, cross valve, outdoor heat exchanger and first throttle element, and described indoor set comprises indoor heat exchanger;
Described air-conditioning system also comprises First Heat Exchanger, described First Heat Exchanger comprises two independently streams, be respectively first flow path and the second stream, form described first flow path between first port of described First Heat Exchanger and the second port, between the 3rd port of described First Heat Exchanger and the 4th port, form described second stream;
Described compressor, cross valve, outdoor heat exchanger, first throttle element, indoor heat exchanger and First Heat Exchanger are in turn connected to form refrigerating circuit;
Described cross valve comprises the first valve port to the 4th valve port, described first valve port is communicated with described second port, described second valve port is communicated with described outdoor heat exchanger, and described 3rd valve port is communicated with the exhaust end of described compressor, and described 4th valve port is communicated with described indoor heat exchanger;
Described first flow path is connected between described first valve port and the suction end of described compressor, described second stream is connected between described outdoor heat exchanger and described first throttle element, or in parallel with described outdoor heat exchanger after described second stream series connection second section fluid element.
More preferably, described air-conditioning system also comprises the first magnetic valve and the second magnetic valve;
Described second magnetic valve is connected between described first throttle element and described indoor heat exchanger;
One end of described first magnetic valve is communicated with described second port, and the other end is communicated with described first throttle element and the corresponding common port of described second magnetic valve.
More preferably, described air-conditioning system also comprises the first check valve and the second check valve;
Described first check valve is connected between described 4th port and described first throttle element, and described second check valve is connected between described second port and described first valve port.
More preferably, described air-conditioning system also comprises the 3rd check valve;
When described second stream is connected between described outdoor heat exchanger and described first throttle element, in parallel with described 3rd check valve after described first check valve of described second stream series connection.
More preferably, described First Heat Exchanger is plate type heat exchanger or double pipe heat exchanger.
More preferably, described indoor heat exchanger is also provided with electric heating tube or radiant panel.
More preferably, described air-conditioning system also comprises two or more stop valve;
Described stop valve is in series with between described indoor set and described off-premises station.
More preferably, described air-conditioning system has the first heating mode, wherein under described air-conditioning system is in the first heating mode, described first valve port and the conducting respectively of the second valve port, described 3rd valve port and the 4th valve port, described second magnetic valve and first throttle element manipulation, and described first closed electromagnetic valve.
More preferably, described air-conditioning system has the second heating mode, wherein under described air-conditioning system is in the second heating mode, described first valve port and the conducting respectively of the 4th valve port, described second valve port and the 3rd valve port, described first magnetic valve and first throttle element manipulation, and described second closed electromagnetic valve.
More preferably, described air-conditioning system has refrigeration mode, wherein under described air-conditioning system is in refrigeration mode, and described first valve port and the conducting respectively of the 4th valve port, described second valve port and the 3rd valve port, described second magnetic valve and first throttle element manipulation, and described first closed electromagnetic valve.
The invention has the beneficial effects as follows:
Air-conditioning system of the present invention, structural design is simple, shaped article can be used to form First Heat Exchanger, substitute indoor heat exchanger when defrost by First Heat Exchanger and complete whole thermodynamic cycle, make heat pump type air corditioning system realize fast defrosting to frost layer on outdoor heat exchanger.
Accompanying drawing explanation
Fig. 1 is that the refrigerant of air-conditioning system one embodiment of the present invention when refrigeration mode runs moves towards figure;
Fig. 2 for air-conditioning system shown in Fig. 1 first heating mode run time refrigerant move towards figure;
Fig. 3 for air-conditioning system shown in Fig. 1 second heating mode run time refrigerant move towards figure;
Fig. 4 is the schematic diagram of another embodiment of air-conditioning system of the present invention;
Fig. 5 moves towards figure for the refrigerant of air-conditioning system shown in Fig. 4 when refrigeration mode runs;
Fig. 6 for air-conditioning system shown in Fig. 4 first heating mode run time refrigerant move towards figure;
Fig. 7 for air-conditioning system shown in Fig. 4 second heating mode run time refrigerant move towards figure;
Wherein,
01 compressor; 10 indoor heat exchangers; 15 cross valves; 20 outdoor heat exchangers;
25 first throttle elements; 29 second section fluid elements; 30 First Heat Exchangers;
32 vapour liquid separators; 34 first magnetic valves; 35 second magnetic valves; 36 radiant panels;
38 the 3rd check valves; 39 first check valves; 40 second check valves; 70 indoor fan blades;
80 stop valves; 100 off-premises stations; 200 indoor sets.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, air-conditioning system of the present invention is further elaborated.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
Referring to figs. 1 through Fig. 7, air-conditioning system one embodiment of the present invention comprises off-premises station 100 and indoor set 200, off-premises station 100 comprises compressor 01, cross valve 15, outdoor heat exchanger 20 and first throttle element 25, indoor set 200 comprises indoor heat exchanger 10, air-conditioning system also comprises First Heat Exchanger 30, First Heat Exchanger 30 can on machine 100 disposed in the outdoor, and First Heat Exchanger 30 is plate type heat exchanger or double pipe heat exchanger.
First Heat Exchanger 30 comprises two independently streams, be respectively first flow path and the second stream, form described first flow path between first port of First Heat Exchanger 30 and the second port, between the 3rd port of First Heat Exchanger 30 and the 4th port, form described second stream; In Fig. 1 to Fig. 7, the port in First Heat Exchanger 30 upper left corner is the 3rd port, and the port in the lower left corner is the first port, and the port in First Heat Exchanger 30 upper right corner is the 4th port, and the port in the lower right corner is the second port.
Compressor 01, cross valve 15, outdoor heat exchanger 20, first throttle element 25, indoor heat exchanger 10 and First Heat Exchanger 30 are in turn connected to form refrigerating circuit.
Cross valve 15 comprises the first valve port to the 4th valve port (A1, B1, C1, D1), first valve port A1 is communicated with the second port of First Heat Exchanger 30, second valve port B1 communication chamber external heat exchanger 20,3rd valve port C1 is communicated with the exhaust end of compressor 01,4th valve port D1 is communicated with indoor heat exchanger 10, the first flow path of First Heat Exchanger 30 is connected between the first valve port A1 and the suction end of compressor 01, second stream of First Heat Exchanger 30 is connected between outdoor heat exchanger 20 and first throttle element 25, as shown in Figure 1 to Figure 3; Or in parallel with outdoor heat exchanger 20 after the second stream series connection second section fluid element 29 of First Heat Exchanger 30, as shown in Figures 4 to 7.Preferably, first throttle element 25 is electric expansion valve or capillary, and second section fluid element 29 is capillary or electric expansion valve.
More preferably, as a kind of embodiment, air-conditioning system also comprises the first magnetic valve 34 and the second magnetic valve 35, second magnetic valve 35 is connected between first throttle element 25 and indoor heat exchanger 10, one end of first magnetic valve 34 is communicated with the second port of First Heat Exchanger 30, the other end is communicated with first throttle element 25 and the corresponding common port of the second magnetic valve 35, and the A point in figure is first throttle element 25 and the corresponding common port of the second magnetic valve 35.
Preferably, air-conditioning system also comprises the first check valve 39 and the second check valve 40, first check valve 39 is connected between the 4th port of First Heat Exchanger 30 and first throttle element 25, and the second check valve 40 is connected between the second port of First Heat Exchanger 30 and the first valve port A1 of cross valve 15.When described second stream is connected between outdoor heat exchanger 20 and first throttle element 25, air-conditioning system also comprises the 3rd check valve 38, and described second stream is connected in parallel with the 3rd check valve 38 after the first check valve 39.
More preferably, as a kind of embodiment, indoor heat exchanger 10 is also provided with radiant panel 36, radiant panel 36 also can be substituted by electric heating tube.Air-conditioning system also comprises two or more stop valve 80, is in series with stop valve 80 between indoor set 200 and off-premises station 100.Indoor set 200 and the circulation line of off-premises station 100 arrange stop valve 80, when air-conditioning system breaks down, ends by stop valve 80, without the need to intrasystem refrigerant being bled off and can keep in repair, handled easily.
Air-conditioning system has the first heating mode, wherein under air-conditioning system is in the first heating mode (normally heating), cross valve 15 is energized, first valve port A1 of cross valve 15 and the second valve port B1, the 3rd valve port C1 and the 4th valve port D1 conducting respectively, second magnetic valve 35 and first throttle element 25 work, and the first magnetic valve 34 cuts out.As shown in Figure 2 and Figure 6, arrow is refrigerant flow direction to first heating mode (normally heating) circulation theory figure.
In fig. 2, the refrigerant of discharging from compressor 01 enters cross valve 15 through the 3rd valve port C1 of cross valve 15, from cross valve 15 the 4th valve port D4 flow out laggard enter indoor heat exchanger 10, refrigerant carries out condensation heat release in indoor heat exchanger 10, room air is given the heat transmission that compressor 01 brings, indoor temperature gets a promotion, after refrigerant is condensed in indoor heat exchanger 10, successively through the second magnetic valve 35, first throttle element 25 and the 3rd check valve 38 arrive outdoor heat exchanger 20, in outdoor heat exchanger 20, carry out evaporation absorb heat, refrigerant after outdoor heat exchanger 20 evaporation endothermic enters cross valve 15 through the second valve port B1 of cross valve 15, then the first flow path of First Heat Exchanger 30 is entered from the first valve port A1 of cross valve 15, the suction end of compressor 01 is flow to after first flow path heat exchange.
In figure 6, the refrigerant of discharging from compressor 01 enters cross valve 15 through the 3rd valve port C1 of cross valve 15, from cross valve 15 the 4th valve port D4 flow out laggard enter indoor heat exchanger 10, refrigerant carries out condensation heat release in indoor heat exchanger 10, room air is given the heat transmission that compressor 01 brings, indoor temperature gets a promotion, after refrigerant is condensed in indoor heat exchanger 10, outdoor heat exchanger 20 is arrived successively through the second magnetic valve 35 and first throttle element 25, in outdoor heat exchanger 20, carry out evaporation absorb heat, refrigerant after outdoor heat exchanger 20 evaporation endothermic enters cross valve 15 through the second valve port B1 of cross valve 15, then the first flow path of First Heat Exchanger 30 is entered from the first valve port A1 of cross valve 15, the suction end of compressor 01 is flow to after first flow path heat exchange.
Under the first heating mode, because the evaporating temperature in outdoor heat exchanger 20 is very low, when solidification point lower than environment temperature, moisture in air can become frost layer in the surface condensation of outdoor heat exchanger 20, frost layer can due to heat continue to carry out and thickness increases gradually, and then the heat exchange amount of outdoor heat exchanger 20 weakens greatly, in order to improve this effect, be just necessary to carry out defrost action.When the temperature-sensitive bag detection of off-premises station 100 reaches defrost condition, air-conditioning system enters the second heating mode (defrost pattern) and carries out defrost.
Under air-conditioning system is in the second heating mode (defrost pattern), cross valve 15 power-off, first valve port A1 of cross valve 15 and the 4th valve port D1, the second valve port B1 and the 3rd valve port C1 conducting respectively, first magnetic valve 34 and first throttle element 25 work, and the second magnetic valve 35 cuts out, as shown in Figure 3 and Figure 7, arrow is refrigerant flow direction to the circulation theory figure of the second heating mode.
In figure 3, the refrigerant that compressor 01 is discharged enters cross valve 15 through the 3rd valve port C1 of cross valve 15, outdoor heat exchanger 20 is arrived after the second valve port B1 of cross valve 15 flows out, refrigerant carries out condensation heat release in outdoor heat exchanger 20, the frost layer on outdoor heat exchanger 20 surface is melted, refrigerant enters further condensation cooling in the second stream of First Heat Exchanger 30 in outdoor heat exchanger 20 after condensation heat release, afterwards successively through the first check valve 39, arrive first throttle element 25, refrigerant is by after expenditure and pressure, the pressure of refrigerant reduces further, corresponding saturation temperature (evaporating temperature) also corresponding further reduction, the first flow path of First Heat Exchanger 30 is entered after the first magnetic valve 34, reach the refrigerant of first flow path and there is the temperature difference with the refrigerant in the second stream, now can realize the exchange of heat.Get back to the suction end of compressor 01 in first flow path after refrigerant evaporation heat absorption, so circulate.
In the figure 7, the refrigerant that compressor 01 is discharged enters cross valve 15 through the 3rd valve port C1 of cross valve 15, two-way is divided into after the second valve port B1 of cross valve 15 flows out, one tunnel arrives outdoor heat exchanger 20, another road enters the second stream of First Heat Exchanger 30 after second section fluid element 29 throttling, the refrigerant arriving outdoor heat exchanger 20 carries out condensation heat release in outdoor heat exchanger 20, and the frost layer on outdoor heat exchanger 20 surface is melted; Refrigerant after second section fluid element 29 reducing pressure by regulating flow enters the second stream of First Heat Exchanger 30; Above-mentioned two parts refrigerant converges before entering first throttle element 25, refrigerant after first throttle element 25 reducing pressure by regulating flow enters the first flow path of First Heat Exchanger 30 through the first magnetic valve 34, after reducing pressure by regulating flow, the refrigerant of lower temperature and the high temperature refrigerant of the second stream carry out heat exchange in First Heat Exchanger 30, lower temperature refrigerant is heated to form saturated refrigerant, finally flows back to the suction end of compressor 01.
In indoor, because the second magnetic valve 35 is in closed condition, so whole indoor heat exchanger 10 is in a kind of closed state, the low temperature refrigerant evaporated after first throttle element 25 reducing pressure by regulating flow can not flow to indoor heat exchanger 10, so also would not reduce the temperature of indoor, discomfort can not be brought to user.In addition, though indoor heat exchanger 10 did not have cold matchmaker's process, but also not having heat is supplied to room, so in order to increase indoor heat, and the radiant panel 36 of accumulation of heat on can arranging in pairs or groups on indoor heat exchanger 10 and electric heating tube.When outdoor heat exchanger 20 is in defrost, after second magnetic valve 35 cuts out, the heat can collected by radiant panel 36 carries out exothermic process slowly, or electric energy is converted to the form of heat energy by electrical heating, by the effect of indoor fan blade 70, to room continuous heat supply.
In cooling mode, cross valve 15 power-off, the first valve port A1 of cross valve 15 and the 4th valve port D1, the second valve port B1 and the 3rd valve port C1 conducting respectively, the second magnetic valve 35 and first throttle element 25 work air-conditioning system, and the first magnetic valve 34 cuts out.As shown in Figure 1 and Figure 5, the direction of arrow is refrigerant flow direction to refrigeration mode circulation theory figure.
In Fig. 1, the refrigerant that compressor 01 is discharged enters cross valve 15 through the 3rd valve port C1 of cross valve 15, outdoor heat exchanger 20 is arrived after the second valve port B1 of cross valve 15 flows out, refrigerant carries out condensation heat release in outdoor heat exchanger 20, refrigerant enters the second stream of First Heat Exchanger 30 in outdoor heat exchanger 20 after condensation heat release, carried out cold treatment in First Heat Exchanger 30 after, the refrigerant of supercooled state enters first throttle element 25, enter to carry out evaporation endothermic in indoor heat exchanger 10 through first throttle element 25 reducing pressure by regulating flow is laggard, reduce indoor temperature, the four valve port D1 of refrigerant through cross valve 15 after heat exchange in indoor heat exchanger 10 enters cross valve 15, the first flow path of First Heat Exchanger 30 is entered afterwards after the first valve port A1 outflow of cross valve 15, the refrigerant of the low temperature refrigerant of first flow path and the higher temperature of the second stream carries out exchange heat, refrigerant under lower pressure again improves vaporized temperature (simultaneously adding the condensation degree of supercooling of refrigerant in the second stream) in the situation of being heated, refrigerant arrives gas-liquid separator 32 after first flow path flows out, vapour liquid separator 32 liquid towards refrigerant is separated, the gaseous coolant of higher mass dryness fraction is made to be inhaled into compressor 01, further ensure the situation that compressor 01 does not exist absorbing gas belt liquid.
In Fig. 5, the refrigerant that compressor 01 is discharged enters cross valve 15 through the 3rd valve port C1 of cross valve 15, point two-way after flowing out from the second valve port B1 of cross valve 15, and a road arrives outdoor heat exchanger 20, and refrigerant carries out condensation heat release in outdoor heat exchanger 20, another road enters the second stream of First Heat Exchanger 30 after second section fluid element 29 throttling, two parts refrigerant converges before entering first throttle element 25, refrigerant after first throttle element 25 reducing pressure by regulating flow enters indoor heat exchanger 10 through the second magnetic valve 35, evaporation endothermic in indoor heat exchanger 10, reduce indoor temperature, the four valve port D1 of refrigerant through cross valve 15 after heat exchange in indoor heat exchanger 10 enters cross valve 15, the first flow path of First Heat Exchanger 30 is entered afterwards after the first valve port A1 outflow of cross valve 15, the refrigerant of the low temperature refrigerant of first flow path and the higher temperature of the second stream carries out exchange heat, refrigerant under lower pressure again improves vaporized temperature (simultaneously adding the condensation degree of supercooling of refrigerant in the second stream) in the situation of being heated, the refrigerant that first flow path flows out arrives gas-liquid separator 32, vapour liquid separator 32 liquid towards refrigerant is separated, the gaseous coolant of higher mass dryness fraction is made to be inhaled into compressor 01, further ensure the situation that compressor 01 does not exist absorbing gas belt liquid.
Circulation theory figure in above-mentioned enforcement, by the introducing of the special construction of First Heat Exchanger 30, the demand of continuous heating can not only be met, and can meet under normal refrigeration and normal heating operation, increase degree of supercooling and the degree of superheat, improve the heat exchange efficiency of machine system.
The air-conditioning system of the various embodiments described above, structural design is simple, shaped article can be used to form the second evaporimeter, substitute the complete whole thermodynamic cycle of indoor heat exchanger when defrost by First Heat Exchanger, make heat pump type air corditioning system can realize fast defrosting to frost layer on outdoor heat exchanger.After indoor heat exchanger increases radiant panel or electrothermal tube, in defrost process, indoor set air quantity can arbitrarily be arranged, and be set to low windscreen without the need to forcing, indoor set heating load has compared to existing technology and greatly promotes.Heat pump type air corditioning system realizes continuous heating when operation heats, and making user when using heating mode, can not produce heating mode and the difference variation of discontinuous, making user feel comfortable.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. an air-conditioning system, comprises off-premises station and indoor set, and described off-premises station comprises compressor, cross valve, outdoor heat exchanger and first throttle element, and described indoor set comprises indoor heat exchanger, it is characterized in that:
Described air-conditioning system also comprises First Heat Exchanger, described First Heat Exchanger comprises two independently streams, be respectively first flow path and the second stream, form described first flow path between first port of described First Heat Exchanger and the second port, between the 3rd port of described First Heat Exchanger and the 4th port, form described second stream;
Described compressor, cross valve, outdoor heat exchanger, first throttle element, indoor heat exchanger and First Heat Exchanger are in turn connected to form refrigerating circuit;
Described cross valve comprises the first valve port to the 4th valve port, described first valve port is communicated with described second port, described second valve port is communicated with described outdoor heat exchanger, and described 3rd valve port is communicated with the exhaust end of described compressor, and described 4th valve port is communicated with described indoor heat exchanger;
Described first flow path is connected between described first valve port and the suction end of described compressor, described second stream is connected between described outdoor heat exchanger and described first throttle element, or in parallel with described outdoor heat exchanger after described second stream series connection second section fluid element.
2. air-conditioning system according to claim 1, is characterized in that:
Also comprise the first magnetic valve and the second magnetic valve;
Described second magnetic valve is connected between described first throttle element and described indoor heat exchanger;
One end of described first magnetic valve is communicated with described second port, and the other end is communicated with described first throttle element and the corresponding common port of described second magnetic valve.
3. air-conditioning system according to claim 2, is characterized in that:
Also comprise the first check valve and the second check valve;
Described first check valve is connected between described 4th port and described first throttle element, and described second check valve is connected between described second port and described first valve port.
4. air-conditioning system according to claim 3, is characterized in that:
Also comprise the 3rd check valve;
When described second stream is connected between described outdoor heat exchanger and described first throttle element, in parallel with described 3rd check valve after described first check valve of described second stream series connection.
5. the air-conditioning system according to any one of claim 1-4, is characterized in that:
Described First Heat Exchanger is plate type heat exchanger or double pipe heat exchanger.
6. air-conditioning system according to claim 5, is characterized in that:
Described indoor heat exchanger is also provided with electric heating tube or radiant panel.
7. the air-conditioning system according to any one of claim 1-4, is characterized in that:
Also comprise two or more stop valve;
Described stop valve is in series with between described indoor set and described off-premises station.
8. the air-conditioning system according to Claims 2 or 3 or 4, is characterized in that:
Described air-conditioning system has the first heating mode, wherein under described air-conditioning system is in the first heating mode, described first valve port and the conducting respectively of the second valve port, described 3rd valve port and the 4th valve port, described second magnetic valve and first throttle element manipulation, and described first closed electromagnetic valve.
9. the air-conditioning system according to Claims 2 or 3 or 4, is characterized in that:
Described air-conditioning system has the second heating mode, wherein under described air-conditioning system is in the second heating mode, described first valve port and the conducting respectively of the 4th valve port, described second valve port and the 3rd valve port, described first magnetic valve and first throttle element manipulation, and described second closed electromagnetic valve.
10. the air-conditioning system according to Claims 2 or 3 or 4, is characterized in that:
Described air-conditioning system has refrigeration mode, wherein under described air-conditioning system is in refrigeration mode, described first valve port and the conducting respectively of the 4th valve port, described second valve port and the 3rd valve port, described second magnetic valve and first throttle element manipulation, and described first closed electromagnetic valve.
CN201310461621.5A 2013-09-30 2013-09-30 Air-conditioning system Active CN104515318B (en)

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Cited By (5)

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CN104949207A (en) * 2015-06-30 2015-09-30 广东美的暖通设备有限公司 Temperature-humidity double-control type air conditioner system and control method thereof
CN106705303A (en) * 2017-01-10 2017-05-24 美的集团武汉制冷设备有限公司 Defrosting control method and system and air conditioner
CN111196120A (en) * 2018-11-16 2020-05-26 杭州三花研究院有限公司 Heat exchanger and thermal management system
CN112268378A (en) * 2020-11-18 2021-01-26 珠海格力电器股份有限公司 Heat pump system, control method and control device thereof, air conditioning equipment and storage medium
CN112413947A (en) * 2020-11-11 2021-02-26 珠海格力电器股份有限公司 Defrosting assembly, air conditioning system and control method of air conditioning system

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CN102620409A (en) * 2011-01-30 2012-08-01 博西华电器(江苏)有限公司 Water heater with personalized bath function
CN203550270U (en) * 2013-09-30 2014-04-16 珠海格力电器股份有限公司 Air conditioning system

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CN106705303A (en) * 2017-01-10 2017-05-24 美的集团武汉制冷设备有限公司 Defrosting control method and system and air conditioner
CN106705303B (en) * 2017-01-10 2019-05-14 美的集团武汉制冷设备有限公司 Defrosting control method, defrosting control system and air conditioner
CN111196120A (en) * 2018-11-16 2020-05-26 杭州三花研究院有限公司 Heat exchanger and thermal management system
CN112413947A (en) * 2020-11-11 2021-02-26 珠海格力电器股份有限公司 Defrosting assembly, air conditioning system and control method of air conditioning system
CN112268378A (en) * 2020-11-18 2021-01-26 珠海格力电器股份有限公司 Heat pump system, control method and control device thereof, air conditioning equipment and storage medium

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