CN105627612A - Outdoor unit refrigerant pipeline system, air conditioner and refrigeration control method for air conditioner - Google Patents
Outdoor unit refrigerant pipeline system, air conditioner and refrigeration control method for air conditioner Download PDFInfo
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- CN105627612A CN105627612A CN201610008926.4A CN201610008926A CN105627612A CN 105627612 A CN105627612 A CN 105627612A CN 201610008926 A CN201610008926 A CN 201610008926A CN 105627612 A CN105627612 A CN 105627612A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses an outdoor unit refrigerant pipeline system, an air conditioner and a refrigeration control method for the air conditioner. The outdoor unit refrigerant pipeline system comprises a compressor, an outdoor heat exchange device and a first throttling device and further comprises a supercooling heat exchange device and a bypass. The supercooling heat exchange device comprises a first heat exchange assembly, a second heat exchange assembly and a second throttling device. One end of the bypass is connected with an exhaust opening of the compressor, and the other end of the bypass is connected with the first end of the first heat exchange assembly. The bypass is provided with a first electromagnetic valve. According to the outdoor unit refrigerant pipeline system, the air conditioner and the refrigeration control method for the air conditioner, the supercooling heat exchange device and the bypass are arranged, when low-temperature refrigerating is conducted, the first electromagnetic valve on the bypass is started, and the supercooling heat exchange device is directly connected with the exhaust opening of the compressor; then, refrigerants discharged out from the exhaust opening directly enter the supercooling heat exchange device which is used as a condenser, the condensing pressure can be improved effectively, and the operating stability of the outdoor unit refrigerant pipeline system is ensured.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly to the refrigeration control method of a kind of off-premises station coolant pipe-line system, air-conditioner and air-conditioner.
Background technology
In today that environmental protection, ideas of energy-saving are accepted by everybody day by day, many air conditioning systems, particularly high-capacity air conditioning system began to use refrigeration technique or air injection enthalpy-increasing technology to improve system capability efficiency. In these high-capacity air conditioning systems, the capacity of single cover system generally has ten even more than tens, and particularly multi-connected machine, set of system can by identical or different capabilities wired in parallel, and inside modules also has multiple compressors.
In these high-capacity air conditioning systems, not only to meet the ability output under the big load of high temperature, also to ensure system output under Smaller load, it is also necessary to ensure the global reliability of unit under Smaller load exports, so, the range regulation of system capability output has just become a crucial control technology.
In conventional refrigeration plant, often by reducing compressor operating frequency to reduce output, close fractional distilling tube to improve condensing pressure. But in hicap, the restriction of and compressor minimum operation frequency relatively big due to compressor displacement, it is impossible to the output of compressor is dropped to very low; Additionally, part system can reduce heat exchange area by closedown fractional distilling tube, but under extreme conditions also it is not enough to the condensing pressure of raising system, still there will be compressor and flow back to the problem that the gas degree of superheat is not enough, the reliability of influential system and comfort.
Summary of the invention
The main purpose of the present invention is to provide a kind of off-premises station coolant pipe-line system, it is intended to be effectively improved the condensing pressure of off-premises station coolant pipe-line system, to ensure the stability that off-premises station coolant pipe-line system is run.
For achieving the above object, the off-premises station coolant pipe-line system that the present invention proposes, including compressor, outdoor heat exchange device and first throttle device, described off-premises station coolant pipe-line system also included cooling heat-exchanger and a bypass;
Described cooling heat-exchanger of crossing includes parallel arrangement of first heat-exchanging component and the second heat-exchanging component, and second throttling arrangement, first end of described first heat-exchanging component is connected with described first throttle device, second end of described first heat-exchanging component is for being connected with one end of indoor heat-exchanger rig, second end of described first heat-exchanging component is connected with the first end of described second heat-exchanging component by described second throttling arrangement, and the second end of described second heat-exchanging component is connected with the gas returning port of compressor;
One end of described bypass is connected with the air vent of described compressor, and the other end is connected with the first end of described first heat-exchanging component; Described bypass is provided with the first electromagnetic valve.
Preferably, described off-premises station coolant pipe-line system also includes cross valve, and the first port of described cross valve is for connecting the air vent of described compressor; Second port of described cross valve is used for connecting described outdoor heat exchange device; 3rd port of described cross valve is for connecting the gas returning port of described compressor; 4th port of described cross valve is for the other end of heat-exchanger rig in junction chamber.
Preferably, it is provided with oil eliminator between air vent and first port of described cross valve of described compressor; Described by-pass around described oil eliminator and be connected to the air vent of described compressor.
Preferably, it is provided with gas-liquid separator between gas returning port and the 3rd port of described cross valve of described compressor; Second end of described second heat-exchanging component is connected to the gas returning port of described compressor by described gas-liquid separator.
Preferably, it is provided with the second electromagnetic valve between the second end and the described gas-liquid separator of described second heat-exchanging component.
The present invention also proposes a kind of air-conditioner, including indoor set, off-premises station, detecting device and controller, described off-premises station includes compressor, outdoor heat exchange device and first throttle device, and described off-premises station coolant pipe-line system also included cooling heat-exchanger and a bypass; Described cooling heat-exchanger of crossing includes parallel arrangement of first heat-exchanging component and the second heat-exchanging component, and second throttling arrangement, first end of described first heat-exchanging component is connected with described first throttle device, second end of described first heat-exchanging component is for being connected with one end of indoor heat-exchanger rig, second end of described first heat-exchanging component is connected with the first end of described second heat-exchanging component by described second throttling arrangement, and the second end of described second heat-exchanging component is connected with the gas returning port of compressor; One end of described bypass is connected with the air vent of described compressor, and the other end is connected with the first end of described first heat-exchanging component; Described bypass is provided with the first electromagnetic valve; Described controller is electrically connected with described detecting device and described first electromagnetic valve, and described detecting device is used for detecting outdoor temperature, the total energy of indoor set needs and the pressure at expulsion of compressor; Described controller needs for the total energy of the detection outdoor temperature detected according to described detecting device, indoor set and the pressure at expulsion of compressor, it may be judged whether need unlatching cryogenic refrigeration pattern; When judging to need to open cryogenic refrigeration pattern, control described first electromagnetic valve and open to turn on described bypass.
Preferably, described detecting device includes:
Temperature detecting module, is located on described off-premises station, is used for detecting outdoor temperature;
Needing detection module, be located on described indoor set, the total energy for detecting indoor set needs; And,
Pressure detecting module, is located on described compressor, for detecting the pressure at expulsion of compressor.
Preferably, described controller includes:
First judge module, is used for judging that whether outdoor temperature is less than preset temperature;
Second judge module, whether the total energy for judging indoor set needs to need less than default total energy;
Whether 3rd judge module, be used for the pressure at expulsion judging compressor less than preset pressure; And,
Determination module, for outdoor temperature need to need less than default total energy less than the total energy of preset temperature, indoor set and the pressure at expulsion of compressor less than preset pressure time, it is determined that need to open cryogenic refrigeration pattern.
The present invention also proposes the refrigeration control method of a kind of air-conditioner, described air-conditioner includes indoor set, off-premises station, detecting device and controller, described off-premises station includes compressor, outdoor heat exchange device and first throttle device, and described off-premises station coolant pipe-line system also included cooling heat-exchanger and a bypass; Described cooling heat-exchanger of crossing includes parallel arrangement of first heat-exchanging component and the second heat-exchanging component, and second throttling arrangement, first end of described first heat-exchanging component is connected with described first throttle device, second end of described first heat-exchanging component is for being connected with one end of indoor heat-exchanger rig, second end of described first heat-exchanging component is connected with the first end of described second heat-exchanging component by described second throttling arrangement, and the second end of described second heat-exchanging component is connected with the gas returning port of compressor; One end of described bypass is connected with the air vent of described compressor, and the other end is connected with the first end of described first heat-exchanging component; Described bypass is provided with the first electromagnetic valve; Described controller is electrically connected with described detecting device and described first electromagnetic valve, and described detecting device is used for detecting outdoor temperature, the total energy of indoor set needs and the pressure at expulsion of compressor; Described controller needs for the total energy of the detection outdoor temperature detected according to described detecting device, indoor set and the pressure at expulsion of compressor, it may be judged whether need operation cryogenic refrigeration pattern; When being judged to cryogenic refrigeration pattern, control described first electromagnetic valve and open to turn on described bypass; Described refrigeration control method, comprises the following steps:
When normal refrigerating mode runs, obtain outdoor temperature, the total energy of indoor set needs and the pressure at expulsion of compressor, it may be judged whether need to open cryogenic refrigeration pattern;
When judging to need to open cryogenic refrigeration pattern, control described first electromagnetic valve and open to turn on described bypass.
Preferably, described air-conditioner, when normal refrigerating mode runs, obtains outdoor temperature, the total energy of indoor set needs and the pressure at expulsion of compressor, it may be judged whether need the step of cryogenic refrigeration pattern to include:
Judge that whether outdoor temperature is less than preset temperature;
If so, then judge the total energy of indoor set needs whether to need less than default total energy;
If so, then judge that whether the pressure at expulsion of compressor is less than preset pressure;
If so, then judge to need to open cryogenic refrigeration pattern.
Technical solution of the present invention, by arranging cooling heat-exchanger and bypass, when cryogenic refrigeration, open the first electromagnetic valve in bypass, the first heat-exchanging component crossing cooling heat-exchanger is directly connected with the air vent of compressor, at this moment, the coolant discharged by air vent entered directly in the first heat-exchanging component of cooling heat-exchanger, the first heat-exchanging component crossing cooling heat-exchanger is used as condenser, it is possible to effectively promote condensing pressure, it is ensured that the stability that off-premises station coolant pipe-line system is run.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described 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 premise not paying creative work, it is also possible to the structure according to these accompanying drawings obtains other accompanying drawing.
Fig. 1 is the framework schematic diagram of off-premises station coolant pipe-line system first embodiment of the present invention;
Fig. 2 is the off-premises station coolant pipe-line system shown in Fig. 1, and the coolant when normal refrigerating mode flows to schematic diagram;
Fig. 3 is the off-premises station coolant pipe-line system shown in Fig. 1, and the coolant when cryogenic refrigeration pattern flows to schematic diagram;
Fig. 4 is the framework schematic diagram of off-premises station coolant pipe-line system the second embodiment of the present invention;
Fig. 5 is the framework schematic diagram of off-premises station coolant pipe-line system the 3rd embodiment of the present invention;
Fig. 6 is the framework schematic diagram of off-premises station coolant pipe-line system the 4th embodiment of the present invention;
Fig. 7 is the framework schematic diagram of off-premises station coolant pipe-line system the 5th embodiment of the present invention;
Fig. 8 is the module map of air-conditioner one embodiment of the present invention;
Fig. 9 is the module map of an embodiment of the detecting device in Fig. 8;
Figure 10 is the module map of an embodiment of the controller in Fig. 8;
Figure 11 is the flow chart of refrigeration control method one embodiment of air-conditioner of the present invention;
Figure 12 is the flow chart of an embodiment of the step S10 of Figure 11.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 100 | Off-premises station | 200 | Indoor set |
| 300 | Detecting device | 400 | Controller |
| 110 | Compressor | 120 | Outdoor heat exchange device |
| 130 | First throttle device | 140 | Cross cooling heat-exchanger |
| 150 | Bypass | 160 | Cross valve |
| 170 | Oil eliminator | 180 | Gas-liquid separator |
| 190 | Second electromagnetic valve | 112 | Gas returning port |
| 114 | Air vent | 142 | First heat-exchanging component |
| 144 | Second heat-exchanging component | 146 | Second throttling arrangement |
| 152 | First electromagnetic valve | 320 | Temperature detecting module |
| 340 | Detection module can be needed | 360 | Pressure detecting module |
| 420 | First judge module | 440 | Second judge module |
| 460 | 3rd judge module | 480 | Determination module |
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Need explanation, directional instruction in the embodiment of the present invention (such as up, down, left, right, before and after ...) is only for explaining relative position relation between each parts, motion conditions etc. under a certain particular pose (as shown in drawings), if this particular pose changes, then directionality instruction also correspondingly changes therewith.
It addition, relate to the description of " first ", " second " etc. in the present invention only for descriptive purposes, and it is not intended that instruction or imply its relative importance or the implicit quantity indicating indicated technical characteristic. Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature. Additionally; technical scheme between each embodiment can be combined with each other; but must be based on those of ordinary skill in the art are capable of; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme is absent from, also not within the protection domain of application claims.
The present invention proposes a kind of off-premises station coolant pipe-line system, and off-premises station coolant pipe-line system is the part being positioned at off-premises station of the coolant circulating system of air-conditioner.
Referring to figs. 1 through the framework schematic diagram that Fig. 3, Fig. 1 are off-premises station coolant pipe-line system first embodiment of the present invention; Fig. 2 is that the off-premises station coolant pipe-line system of the present invention coolant when normally freezing flows to schematic diagram; The coolant that Fig. 3 is during off-premises station coolant pipe-line system cryogenic refrigeration of the present invention flows to schematic diagram.
In embodiments of the present invention, described off-premises station coolant pipe-line system includes compressor 110, outdoor heat exchange device 120 and first throttle device 130, and described off-premises station coolant pipe-line system also included cooling heat-exchanger 140 and a bypass 150, described cooling heat-exchanger 140 of crossing includes parallel arrangement of first heat-exchanging component 142 and the second heat-exchanging component 144, and second throttling arrangement 146, first end of described first heat-exchanging component 142 is connected with described first throttle device 130, second end of described first heat-exchanging component 142 is for being connected with one end of indoor heat-exchanger rig (not shown), second end of described first heat-exchanging component 142 is connected with the first end of described second heat-exchanging component 144 by described second throttling arrangement 146, described second end of the second heat-exchanging component 144 is connected with the gas returning port 112 of compressor 110, one end of described bypass 150 is connected with the air vent 114 of described compressor 110, and the other end is connected with the first end of described first heat-exchanging component 142, described bypass 150 is provided with the first electromagnetic valve 152.
Specifically, in the present embodiment, described first throttle device 130 can be electric expansion valve; Described first heat-exchanging component 142 and the second heat-exchanging component 144 are specially heat exchanger.
When air-conditioner normally freezes, as shown in Figures 1 and 2, described first electromagnetic valve 152 cuts out, to end described bypass 150; After the coolant discharged by the air vent 114 of described compressor 110 sequentially passes through described outdoor heat exchange device 120, first throttle device 130, entered described first heat-exchanging component 142 by the first end of described first heat-exchanging component 142; After described first heat-exchanging component 142 heat exchange, the second end of described first heat-exchanging component 142 discharge; The coolant discharged is divided into two parts, and Part I enters described indoor heat-exchanger rig; Part II, via after described second throttling arrangement 146 throttling, by the first end of described second heat-exchanging component 144, enters described second heat-exchanging component 144; After described second heat-exchanging component 144 heat exchange, the gas returning port 112 of described compressor 110 it is back in compressor 110; Described Part II coolant is used for Part I coolant through a cooling, to improve condensing pressure. At this moment, described outdoor heat exchange device 120 is as condenser.
When air-conditioner cryogenic refrigeration, as shown in Figures 1 and 3, described first electromagnetic valve 152 is opened, to turn on described bypass 150; The coolant discharged by the air vent 114 of described compressor 110 is entered described first heat-exchanging component 142 by the first end of described first heat-exchanging component 142; After described first heat-exchanging component 142 heat exchange, the second end of described first heat-exchanging component 142 discharge; The coolant discharged is divided into two parts, and Part I enters described indoor heat-exchanger rig; Part II, via after described second throttling arrangement 146 throttling, by the first end of described second heat-exchanging component 144, enters described second heat-exchanging component 144; After described second heat-exchanging component 144 heat exchange, the gas returning port 112 of described compressor 110 it is back in compressor 110; Described Part II coolant is used for Part I coolant through a cooling, to improve condensing pressure. At this moment, the first heat-exchanging component 142 of described cooling heat-exchanger 140 excessively is directly as condenser, it is possible to effectively promote condensing pressure, it is ensured that the stability that off-premises station coolant pipe-line system is run.
Technical scheme, by arranging cooling heat-exchanger 140 and bypass 150, when cryogenic refrigeration, open the first electromagnetic valve 152 in bypass 150, the first heat-exchanging component 142 crossing cooling heat-exchanger 140 is directly connected with the air vent 114 of compressor 110, at this moment, the coolant discharged by air vent 114 entered directly in the first heat-exchanging component 142 of cooling heat-exchanger 140, the first heat-exchanging component 142 crossing cooling heat-exchanger 140 is used as condenser, can effectively promote condensing pressure, it is ensured that the stability that off-premises station coolant pipe-line system is run.
Further, as shown in Fig. 1 and Fig. 4, Fig. 4 is the framework schematic diagram of off-premises station coolant pipe-line system the second embodiment of the present invention. The present embodiment and first embodiment are different in that, in the present embodiment, this off-premises station coolant pipe-line system suitable in the air device of both cooling and heating, namely usually said dual system air-conditioner.
In the present embodiment, described off-premises station refrigerant pipeline system also includes cross valve 160, and the first port D of described cross valve 160 is for connecting the air vent 114 of described compressor 110; Second port C is used for connecting described outdoor heat exchange device 120; 3rd port S is for connecting the gas returning port 112 of described compressor 110; 4th port E is for heat-exchanger rig in junction chamber.
When air-conditioner normally freezes, when described cross valve 160 powers on, described first port D communicates with described second port C, described 3rd port S communicates with described 4th port E, the coolant that described compressor 110 is discharged via after described cross valve 160, outdoor heat exchange device 120, first throttle device 130, excessively cooling heat-exchanger 140, indoor heat-exchanger rig, is back in compressor 110 by the gas returning port 112 of described compressor 110 successively.
When air conditioner heat-production function, during described cross valve 160 power-off, described first port D communicates with described 4th port E, described second port C leads to described three port S-phase, the coolant that described compressor 110 is discharged via after described cross valve 160, indoor heat-exchanger rig, excessively cooling heat-exchanger 140, first throttle device 130, outdoor heat exchange device 120, is back in compressor 110 by the gas returning port 112 of described compressor 110 successively.
Further, as shown in Figures 1 to 5, Fig. 5 is the framework schematic diagram of off-premises station coolant pipe-line system the 3rd embodiment of the present invention. This embodiment and the second embodiment are different in that: in the present embodiment, be provided with oil eliminator 170 between air vent 114 and the first port D of described cross valve 160 of described compressor 110; Described bypass 150 is connected to the air vent 114 of described compressor 110 by described oil eliminator 170. Described oil eliminator 170 is for separating lubricating oil subsidiary in coolant, and then ensures SAPMAC method effect.
Further, as shown in Figures 1 to 6, Fig. 6 is the framework schematic diagram of off-premises station coolant pipe-line system the 4th embodiment of the present invention. This embodiment and the 3rd embodiment are different in that: in the present embodiment, be provided with gas-liquid separator 180 between gas returning port 112 and the 3rd port S of described cross valve 160 of described compressor 110; The described second output mouth of pipe is connected to the gas returning port 112 of described compressor 110 by described gas-liquid separator 180. Described gas-liquid separator 180 is for separating the coolant of steam state and liquid, equally in order to ensure SAPMAC method effect.
Further, as shown in Figures 1 to 7, Fig. 7 is the framework schematic diagram of off-premises station coolant pipe-line system the 5th embodiment of the present invention. This embodiment and the 4th embodiment are different in that: in the present embodiment, in the present embodiment, be provided with the second electromagnetic valve 190 between the second end and the described gas-liquid separator 180 of described second heat-exchanging component 144. Described second electromagnetic valve 190 opens or closes the described inside coolant circulating system crossing cooling heat-exchanger 140; Namely described second electromagnetic valve 190 is for opening or closing the described supercool function crossing cooling heat-exchanger 140.
The present invention proposes a kind of air-conditioner.
As shown in Figure 8, Fig. 8 is the module map of air-conditioner one embodiment of the present invention.
The air-conditioner of the present embodiment includes off-premises station 100, indoor set 200, detecting device 300 and controller 400, and described off-premises station 100 includes off-premises station coolant pipe-line system; The concrete structure of described off-premises station coolant pipe-line system is with reference to above-described embodiment, owing to this air-conditioner have employed whole technical schemes of above-mentioned all embodiments, therefore at least having all beneficial effects that the technical scheme of above-described embodiment is brought, this is no longer going to repeat them.
Wherein, described controller 400 is electrically connected with described detecting device 300 and described first electromagnetic valve 152, and described detecting device 300 is used for detecting outdoor temperature, the total energy of indoor set 200 needs and the pressure at expulsion of compressor 110; Described controller 400 is for needing according to the total energy of the detection outdoor temperature of described detecting device 300 detection, indoor set 200 and the pressure at expulsion of compressor 110, it may be judged whether need operation cryogenic refrigeration pattern; When judging to need to open cryogenic refrigeration pattern, control described first electromagnetic valve 152 and open to turn on described bypass 150.
The air-conditioner of the present embodiment, by detecting outdoor temperature, the total energy of indoor set 200 needs and the pressure at expulsion of compressor 110 judges whether to need to run cryogenic refrigeration pattern; When being judged to cryogenic refrigeration pattern, control described first electromagnetic valve 152 and open to turn on described bypass 150, to enter cryogenic refrigeration pattern, it is achieved automatically controlling of cryogenic refrigeration pattern.
Depend on actual need and different as being judged as needing running cryogenic refrigeration pattern under what conditions, can be will detect outdoor temperature, the total energy need of indoor set and the pressure at expulsion wherein part of compressor, compare with correspondingly setting value: such as, only outdoor temperature is surveyed in detection, the total energy of indoor set needs and any one or two in the pressure at expulsion of compressor, then compare with correspondingly setting value, and (survey outdoor temperature lower than preset temperature after satisfied correspondingly condition, and/or the total energy of indoor set need to need less than default total energy, and/or the pressure at expulsion of compressor is less than default pressure at expulsion), open cryogenic refrigeration pattern, can also be that detection outdoor temperature, the total energy need of indoor set and the pressure at expulsion of compressor are all compared with corresponding setting value, namely outdoor temperature is surveyed in detection respectively, the total energy of indoor set needs and the pressure at expulsion of compressor, then compare with correspondingly setting value, and survey outdoor temperature need to need less than default total energy lower than the total energy of preset temperature, indoor set and the pressure at expulsion of compressor less than default pressure at expulsion time, open cryogenic refrigeration pattern.
Further, as it is shown in figure 9, the module map of detecting device 300 1 embodiment that Fig. 9 is air-conditioner of the present invention.
Described detecting device 300 includes:
Temperature detecting module 320, is located on described off-premises station 100, is used for detecting outdoor environment temperature;
Needing detection module 340, be located on described indoor set 200, the total energy for detecting indoor set 200 needs;
Pressure detecting module 360, is located on described compressor 110, for detecting the pressure at expulsion of compressor 110;
Described controller 400 and described temperature detecting module 320, detection module 340 and pressure detecting module 360 can be needed to be electrically connected.
Specifically, described temperature detecting module 320 can be temperature sensor. Described pressure detecting module 360 can be pressure transducer. The total energy of described indoor set 200 needs then to be calculated obtaining according to the real needs (temperature requirements, air output demand etc.) of indoor and system loss, namely described can need can being adjusted of detection module 340 according to different demands, namely the described temperature sensor that detection module 340 can be needed can to include detecting indoor environment temperature and for the setting module etc. for user setup target temperature, and calculate the total energy need obtaining indoor set according to indoor environment temperature and target temperature.
Further, as shown in Figure 10, Figure 10 is the module map of controller 400 1 embodiment of air-conditioner of the present invention.
Described controller 400 includes:
First judge module 420, is used for judging that whether outdoor temperature is less than preset temperature;
Second judge module 440, is used for judging whether indoor set 200 can need less than default total energy;
Whether 3rd judge module 460, be used for the pressure at expulsion judging compressor 110 less than preset pressure; And,
Determination module 480, for outdoor temperature need to need less than default total energy less than the total energy of preset temperature, indoor set 200 and the pressure at expulsion of compressor 110 less than preset pressure time, it is determined that need to open cryogenic refrigeration pattern.
Specifically, dividing of the operation of first judge module the 420, second judge module 440 and the 3rd judge module 460 not priority, and determination module 480 only outdoor temperature need to need less than default total energy less than the total energy of preset temperature, indoor set 200 and the pressure at expulsion of compressor 110 less than preset pressure time, just judge to need unlatching cryogenic refrigeration pattern; And when outdoor temperature need to less than the pressure at expulsion of default total energy need and compressor 110 less than, in preset pressure, when having one to be unsatisfactory for, then judging to open cryogenic refrigeration pattern less than the total energy of preset temperature, indoor set 200.
The present invention proposes the refrigeration control method of a kind of air-conditioner, and wherein, the concrete structure of described air-conditioner is with reference to above-described embodiment.
As shown in FIG. 11 and 12, with reference to the flow chart of refrigeration control method one embodiment that Fig. 8 to Figure 10, Figure 11 are air-conditioner of the present invention; Figure 12 is the flow chart judging whether to need to open an embodiment of cryogenic refrigeration pattern.
The refrigeration control method of the air-conditioner of the present embodiment comprises the following steps:
Step S10, at normal refrigerating mode, (namely shown outdoor heat exchange device is as condenser, when indoor heat-exchanger rig is as vaporizer: for single system refrigeration air conditioner, namely when air-conditioner is opened; For dual system air-conditioner, namely when cross valve powers on) when running, obtain outdoor temperature, the total energy of indoor set 200 needs and the pressure at expulsion of compressor 110, it may be judged whether need to open cryogenic refrigeration pattern;
Specifically, as shown in figure 12, it may be judged whether need open cryogenic refrigeration mode step can be:
Step S11, judge that whether outdoor temperature is less than preset temperature;
Step S12, if so, then judge that the total energy of indoor set 200 needs whether to need less than default total energy;
Step S13, if so, then judge that whether the pressure at expulsion of compressor 110 is less than preset pressure;
Step S14, if so, then judge need open cryogenic refrigeration pattern.
It is noted that the order between above-mentioned steps S11, step S12 and step S13 is adjustable, the equally possible technique effect realizing the present invention.
Step S20, when judge need open cryogenic refrigeration pattern time, control described first electromagnetic valve 152 and open to turn on described bypass 150.
The refrigeration control method of the present embodiment air-conditioner, by detecting outdoor temperature, the total energy of indoor set 200 needs and the pressure at expulsion of compressor 110 judges whether to need to run cryogenic refrigeration pattern; When being judged to cryogenic refrigeration pattern, control described first electromagnetic valve 152 and open to turn on described bypass 150, to enter cryogenic refrigeration pattern, it is achieved automatically controlling of cryogenic refrigeration pattern.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every under the inventive concept of the present invention; utilize the equivalent structure transformation that description of the present invention and accompanying drawing content are made, or directly/be indirectly used in other relevant technical fields and be included in the scope of patent protection of the present invention.
Claims (10)
1. an off-premises station coolant pipe-line system, including compressor, outdoor heat exchange device and first throttle device, it is characterised in that described off-premises station coolant pipe-line system also included cooling heat-exchanger and a bypass;
Described cooling heat-exchanger of crossing includes parallel arrangement of first heat-exchanging component and the second heat-exchanging component, and second throttling arrangement, first end of described first heat-exchanging component is connected with described first throttle device, second end of described first heat-exchanging component is for being connected with one end of indoor heat-exchanger rig, second end of described first heat-exchanging component is connected with the first end of described second heat-exchanging component by described second throttling arrangement, and the second end of described second heat-exchanging component is connected with the gas returning port of compressor;
One end of described bypass is connected with the air vent of described compressor, and the other end is connected with the first end of described first heat-exchanging component; Described bypass is provided with the first electromagnetic valve.
2. off-premises station coolant pipe-line system as claimed in claim 1, it is characterised in that also include cross valve, the first port of described cross valve is for connecting the air vent of described compressor; Second port of described cross valve is used for connecting described outdoor heat exchange device; 3rd port of described cross valve is for connecting the gas returning port of described compressor; 4th port of described cross valve is for the other end of heat-exchanger rig in junction chamber.
3. off-premises station coolant pipe-line system as claimed in claim 2, it is characterised in that be provided with oil eliminator between air vent and first port of described cross valve of described compressor; Described by-pass around described oil eliminator and be connected to the air vent of described compressor.
4. off-premises station coolant pipe-line system as claimed in claim 3, it is characterised in that be provided with gas-liquid separator between gas returning port and the 3rd port of described cross valve of described compressor; Second end of described second heat-exchanging component is connected to the gas returning port of described compressor by described gas-liquid separator.
5. off-premises station coolant pipe-line system as claimed in claim 4, it is characterised in that be provided with the second electromagnetic valve between the second end and the described gas-liquid separator of described second heat-exchanging component.
6. an air-conditioner, including indoor set, off-premises station, detecting device and controller, it is characterised in that described off-premises station includes the off-premises station coolant pipe-line system as according to any one of claim 1 to 5; Described controller is electrically connected with described detecting device and described first electromagnetic valve, and described detecting device is used for detecting outdoor temperature, the total energy of indoor set needs and the pressure at expulsion of compressor; Described controller needs for the total energy of the detection outdoor temperature detected according to described detecting device, indoor set and the pressure at expulsion of compressor, it may be judged whether need unlatching cryogenic refrigeration pattern; When judging to need to open cryogenic refrigeration pattern, control described first electromagnetic valve and open to turn on described bypass.
7. air-conditioner as claimed in claim 6, it is characterised in that described detecting device includes:
Temperature detecting module, is located on described off-premises station, is used for detecting outdoor temperature;
Needing detection module, be located on described indoor set, the total energy for detecting indoor set needs; And,
Pressure detecting module, is located on described compressor, for detecting the pressure at expulsion of compressor.
8. air-conditioner as claimed in claim 6, it is characterised in that described controller includes:
First judge module, is used for judging that whether outdoor temperature is less than preset temperature;
Second judge module, whether the total energy for judging indoor set needs to need less than default total energy;
Whether 3rd judge module, be used for the pressure at expulsion judging compressor less than preset pressure; And,
Determination module, for outdoor temperature need to need less than default total energy less than the total energy of preset temperature, indoor set and the pressure at expulsion of compressor less than preset pressure time, it is determined that need to open cryogenic refrigeration pattern.
9. the refrigeration control method of the air-conditioner as described in any one in claim 6 to 8, it is characterised in that comprise the following steps:
When normal refrigerating mode runs, obtain outdoor temperature, the total energy of indoor set needs and the pressure at expulsion of compressor, it may be judged whether need to open cryogenic refrigeration pattern;
When judging to need to open cryogenic refrigeration pattern, control described first electromagnetic valve and open to turn on described bypass.
10. the refrigeration control method of air-conditioner as claimed in claim 9, it is characterized in that, described air-conditioner, when normal refrigerating mode runs, obtains outdoor temperature, the total energy of indoor set needs and the pressure at expulsion of compressor, it may be judged whether need the step of cryogenic refrigeration pattern to include:
Judge that whether outdoor temperature is less than preset temperature;
If so, then judge the total energy of indoor set needs whether to need less than default total energy;
If so, then judge that whether the pressure at expulsion of compressor is less than preset pressure;
If so, then judge to need to open cryogenic refrigeration pattern.
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