CN104819595A - Refrigerating system, control method and device and air conditioner - Google Patents
Refrigerating system, control method and device and air conditioner Download PDFInfo
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- CN104819595A CN104819595A CN201510240509.8A CN201510240509A CN104819595A CN 104819595 A CN104819595 A CN 104819595A CN 201510240509 A CN201510240509 A CN 201510240509A CN 104819595 A CN104819595 A CN 104819595A
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- temperature
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Classifications
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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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
- F25B2347/00—Details for preventing or removing deposits or corrosion
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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
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
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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)
Abstract
The invention provides a refrigerating system, a control method, a control device and an air conditioner. The refrigerating system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a driving module, a first throttling gear, a second throttling gear, a first detecting device and a second detecting device, wherein the first throttling device is connected between the outdoor heat exchanger and the driving module, the second throttling device is connected between the driving module and the indoor heat exchanger, the first detecting device is arranged at the position where the driving module locates and used for detecting the current temperature of the driving module and controlling the opening size of the first throttling device, and the second detecting device is arranged between the first throttling device and the driving module and used for detecting the current temperature of the refrigerant of the first throttling device and controlling the opening size of the second throttling device. The refrigerating system, the control method, the control device and the air conditioner not only can reduce the temperature of the driving module, but also can avoid the condensation of the driving module and other electronic control caused by low temperature of the refrigerant flowing out of the driving module.
Description
Technical field
The present invention relates to household electrical appliance technical field, in particular to control device and a kind of air-conditioner of the control method of a kind of refrigeration system, a kind of refrigeration system, a kind of refrigeration system.
Background technology
When air conditioner refrigerating runs, the driver module caloric value of compressor is larger, current driver module cooling generally adopts the air-cooled forced convertion heat radiation of outer machine, and the heat that driver module sends is derived by fin, then is undertaken air-cooled by outdoor fan forced convertion by the fin of driver module.
But, due to the outwardly distribute heat of condenser during refrigerating operaton, when environment temperature is higher, this effect by outer machine air-cooled reduction driver module temperature is not fine, easily cause driver module temperature too high, and then affect driver module reliability of operation and security.
Therefore, how effectively to reduce the temperature of driver module, thus improve stability and the security of driver module operation, become technical problem urgently to be resolved hurrily.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art or correlation technique.
For this reason, one object of the present invention is to propose a kind of refrigeration system.
Another object of the present invention is the control method proposing a kind of refrigeration system.
Another object of the present invention is the control device proposing a kind of refrigeration system.
Another object of the present invention is to propose a kind of air-conditioner.
For realizing at least one object above-mentioned, embodiment according to a first aspect of the invention, proposing a kind of refrigeration system, comprising: compressor, outdoor heat exchanger and indoor heat exchanger; Driver module, carries out work for driving described compressor; First throttle device, described first throttle device is connected between described outdoor heat exchanger and described driver module; Second throttling arrangement, described second throttling arrangement is connected between described driver module and described indoor heat exchanger; First checkout gear, is arranged on the position at described driver module place, for detecting the current block temperature of described driver module, to control the aperture size of described first throttle device; Second detection device, is arranged between described first throttle device and described driver module, for detecting the current refrigerant temperature of the refrigerant by described first throttle device, to control the aperture size of described second throttling arrangement.
According to the refrigeration system of the embodiment of the present invention, by outdoor heat exchanger, condensation liquefaction is carried out to refrigerant, the temperature of refrigerant is reduced, and the aperture size of first throttle device is controlled by the current block temperature of the first checkout gear detection driver module, thus flow into the flow of driver module by the refrigerant controlling low temperature and control the degree that refrigerant lowers the temperature to driver module, thus ensure the safe and stable operation of driver module, such as, when current block temperature is too high, the aperture that can increase first throttle device reduces the temperature of driver module quickly and effectively, in addition, the current refrigerant temperature of the refrigerant after heat exchange is detected by second detection device, the aperture size of the second throttling arrangement is controlled according to current refrigerant temperature, to control the flow that the refrigerant after heat exchange flows out driver module, avoid because current refrigerant temperature is too low and cause the automatically controlled condensation that occurs near driver module, and then guarantee that the automatically controlled long-term safety near driver module and driver module is stably run while reduction driver module temperature, extend the service life of refrigeration system further.
In addition, the refrigeration system provided according to the above embodiment of the present invention also has following additional technical feature:
According to one embodiment of present invention, described second throttling arrangement is connected between the outlet of described driver module and described indoor heat exchanger.
According to the refrigeration system of the embodiment of the present invention, by the second throttling arrangement is connected between driver module and the outlet of indoor heat exchanger, can be controlled by the flow of the aperture size of the second throttling arrangement to the refrigerant flowing out driver module, thus avoid because current refrigerant temperature is too low and cause the automatically controlled condensation that occurs near driver module, and then guarantee that the automatically controlled long-term safety near driver module and driver module is stably run while reduction driver module temperature, extend the service life of refrigeration system further.
According to one embodiment of present invention, also comprise: the 3rd throttling arrangement, described 3rd throttling arrangement is connected between described outdoor heat exchanger and described first throttle device; Cross valve, described cross valve comprises the first port to the 4th port, described first port is connected to the entrance of described outdoor heat exchanger, described second port is connected to the outlet of described indoor heat exchanger, described 3rd port is connected to the gas outlet of oil eliminator, and described 4th port is connected to the entrance of gas-liquid separator; First capillary and the second capillary, one end of described first capillary is connected to the first oil-out of described oil eliminator, the other end of described first capillary is connected to the gas returning port of described compressor, one end of described second capillary is connected to the second oil-out of described oil eliminator, and the other end of described second capillary is connected to the gas returning port of described compressor by magnetic valve; And the gas outlet of described compressor is connected to the entrance of described oil eliminator; The outlet of described gas-liquid separator is connected to the gas returning port of described compressor.
According to the refrigeration system of the embodiment of the present invention, the refrigerant of low-temp low-pressure gaseous state is compressed into the refrigerant of high pressure gaseous by compressor, the refrigerant of high pressure gaseous flow to outdoor heat exchanger after oil eliminator and cross valve, the refrigerant condensate liquid of high pressure gaseous is changed into the refrigerant of normal temperature high voltage liquid state by outdoor heat exchanger, and the flow of the refrigerant flowed in driver module and outdoor heat exchanger is controlled by the aperture size of the 3rd throttling arrangement, when refrigerant flow to the driver module driving compressor operating, the temperature of driver module is higher, therefore, when the refrigerant of normal temperature high voltage liquid state flow to the higher driver module of temperature, the refrigerant of normal temperature high voltage liquid state and driver module carry out heat exchange (particularly, the refrigerant of normal temperature high voltage liquid state and the fin of driver module carry out heat exchange), the heat of driver module is taken away, thus driver module is lowered the temperature, then by indoor heat exchanger, the refrigerant that evaporation endothermic becomes low-temp low-pressure gaseous state is carried out to the refrigerant after heat exchange, the refrigerant of low-temp low-pressure gaseous state is got back in compressor through cross valve and gas-liquid separator, circulation like this, driver module and refrigerant is made constantly to carry out heat exchange, thus the temperature of driver module is reduced, and then ensure the normal work of driver module, and capillary is used for carrying out throttling to refrigerant, to control the flow of refrigerant.
Embodiment according to a second aspect of the invention, propose a kind of control method of refrigeration system, for controlling the refrigeration system work according to any one of technique scheme, described control method comprises: step S1: the current block temperature detecting the current time of described driver module; Step S2: the averaging module temperature obtaining the described driver module within a predetermined period before described current time; Step S3: judge whether the difference of described current block temperature and described averaging module temperature is less than the first preset value, if the determination result is YES, then controls described first throttle device and keeps current aperture, otherwise, control the aperture increasing described first throttle device.
According to the control method of the refrigeration system of the embodiment of the present invention, by the averaging module temperature of the driver module within a predetermined period before the current block temperature of the current time of driver module and current time being compared and judging whether the difference of current block temperature and averaging module temperature is less than the first preset value, and when judging that the difference of current block temperature and averaging module temperature is less than the first preset value, illustrate that first throttle device controls the flow that refrigerant flow to driver module and can meet the demand reducing driver module temperature, then control first throttle device and keep current aperture, otherwise, control the aperture increasing first throttle device, with the flow of timely adjustment refrigerant, so, realize carrying out promptly lowering the temperature in time to driver module, ensure that driver module can run safely and effectively.
According to one embodiment of present invention, after the described first throttle device of control keeps current aperture or increases the aperture of described first throttle device, also comprise: again perform described step S1, described step S2 and described step S3.
According to the control method of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of first throttle device being controlled accordingly, again perform abovementioned steps, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to realize the temperature reducing driver module safely and effectively.
Embodiment according to a third aspect of the invention we, propose a kind of control method of refrigeration system, for controlling the refrigeration system work according to any one of technique scheme, described control method comprises: step S11: the current refrigerant temperature before detecting by described driver module; Step S21: obtain current environment dew-point temperature; Step S31: judge whether the difference of described current refrigerant temperature and described current environment dew-point temperature is greater than the second preset value, if the determination result is YES, then control described second throttling arrangement and keep current aperture, otherwise, control the aperture reducing described second throttling arrangement.
According to the control method of the refrigeration system of the embodiment of the present invention, by the current refrigerant temperature before driver module and current environment dew-point temperature are compared, judge whether the difference of current refrigerant temperature and current environment dew-point temperature is greater than the second preset value, and when judging that the difference of current refrigerant temperature and current environment dew-point temperature is larger, then illustrate that flowing out automatically controlled that the refrigerant of driver module can not cause near driver module under current refrigerant temperature occurs condensation, keep the current aperture of the second throttling arrangement, otherwise, control the aperture of reduction second throttling arrangement, the flow of the refrigerant of module thus control flow check is overdrived, the temperature avoiding the refrigerant owing to flowing through driver module is too low and cause the automatically controlled condensation that occurs near driver module, to improve stability and the security of module operation, and then extend the service life of refrigeration system.
According to one embodiment of present invention, after the described first throttle device of control keeps current aperture or increases the aperture of described first throttle device, also comprise: again perform described step S11, described step S21 and described step S31.
According to the control method of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of the second throttling arrangement being controlled accordingly, again perform abovementioned steps, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to make driver module and automatically controlled near it safely and steadily run, and then extend the service life of refrigeration system.
Embodiment according to a forth aspect of the invention, propose a kind of control device of refrigeration system, for controlling the refrigeration system work according to any one of technique scheme, described control device comprises: the first detecting unit, for detecting the current block temperature of the current time of described driver module; First computing unit, for obtaining the averaging module temperature of the described driver module within a predetermined period before described current time; First judging unit, for judging whether the difference of described current block temperature and described averaging module temperature is less than the first preset value; First control unit, for when judged result is for being, controls described first throttle device and keeping current aperture, otherwise, control the aperture increasing described first throttle device.
According to the control device of the refrigeration system of the embodiment of the present invention, by the averaging module temperature of the driver module within a predetermined period before the current block temperature of the current time of driver module and current time being compared and judging whether the difference of current block temperature and averaging module temperature is less than the first preset value, and when judging that the difference of current block temperature and averaging module temperature is less than the first preset value, illustrate that first throttle device controls the flow that refrigerant flow to driver module and can meet the demand reducing driver module temperature, then control first throttle device and keep current aperture, otherwise, control the aperture increasing first throttle device, with the flow of timely adjustment refrigerant, so, realize carrying out promptly lowering the temperature in time to driver module, ensure that driver module can run safely and effectively.
According to one embodiment of present invention, also comprise: the first scheduling unit, after keeping current aperture at the described first throttle device of control or increase the aperture of described first throttle device, execution cost first detecting unit detects described current block temperature again, described first computing unit obtains described averaging module temperature again, described first judging unit judges the difference of described current block temperature and described averaging module temperature and the magnitude relationship of described first preset value again, described first control unit controls the aperture of described first throttle device again according to judged result.
According to the control device of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of first throttle device being controlled accordingly, again perform aforementioned operation, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to realize the temperature reducing driver module safely and effectively.
Embodiment according to a fifth aspect of the invention, propose a kind of control device of refrigeration system, for controlling the refrigeration system work according to any one of technique scheme, described control device comprises: the second detecting unit, for the current refrigerant temperature before detecting by described driver module; Second computing unit, for obtaining current environment dew-point temperature; Second judging unit, for judging whether the difference of described current refrigerant temperature and described current environment dew-point temperature is greater than the second preset value; Second control unit, for when judged result is for being, controls described second throttling arrangement and keeping current aperture, otherwise, control the aperture reducing described second throttling arrangement.
According to the control device of the refrigeration system of the embodiment of the present invention, by the current refrigerant temperature before driver module and current environment dew-point temperature are compared, judge whether the difference of current refrigerant temperature and current environment dew-point temperature is greater than the second preset value, and when judging that the difference of current refrigerant temperature and current environment dew-point temperature is larger, then illustrate that flowing out automatically controlled that the refrigerant of driver module can not cause near driver module under current refrigerant temperature occurs condensation, keep the current aperture of the second throttling arrangement, otherwise, control the aperture of reduction second throttling arrangement, the flow of the refrigerant of module thus control flow check is overdrived, the temperature avoiding the refrigerant owing to flowing through driver module is too low and cause the automatically controlled condensation that occurs near driver module, to improve stability and the security of module operation, and then extend the service life of refrigeration system.
According to one embodiment of present invention, also comprise: the second scheduling unit, after keeping current aperture at described second throttling arrangement of control or reduce the aperture of described second throttling arrangement, execution cost second detecting unit detects described current refrigerant temperature again, described second computing unit obtains described current environment dew-point temperature again, described second judging unit judges the difference of described current refrigerant temperature and described current environment dew-point temperature and the magnitude relationship of described second preset value again, described second control unit controls the aperture of described second throttling arrangement again according to judged result.
According to the control device of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of the second throttling arrangement being controlled accordingly, again perform aforementioned operation, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to make driver module and automatically controlled near it safely and steadily run, and then extend the service life of refrigeration system.
Embodiment according to a sixth aspect of the invention, proposes a kind of air-conditioner, comprising: the refrigeration system according to any one of technique scheme; And the control device of refrigeration system according to any one of technique scheme, therefore, this air-conditioner has the technique effect identical with the control device of refrigeration system with the refrigeration system according to any one of technique scheme, does not repeat them here.
By technical scheme of the present invention, not only effectively can reduce the temperature of driver module, the temperature of the refrigerant owing to flowing out driver module can also be avoided lower and cause driver module and the automatically controlled condensation that occurs near it, thus ensureing the operation steadily in the long term of refrigeration system.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the structural representation of refrigeration system according to an embodiment of the invention;
Fig. 2 shows the schematic flow sheet of the control method of refrigeration system according to an embodiment of the invention;
Fig. 3 shows the schematic flow sheet of the control method of refrigeration system according to another embodiment of the invention;
Fig. 4 shows the structural representation of the control device of refrigeration system according to an embodiment of the invention;
Fig. 5 shows the structural representation of the control device of refrigeration system according to another embodiment of the invention;
Fig. 6 shows the structural representation of air-conditioner according to an embodiment of the invention;
Fig. 7 shows the schematic flow sheet of the control method of refrigeration system according to still another embodiment of the invention;
Fig. 8 shows the schematic flow sheet of the control method of refrigeration system according to still a further embodiment.
Wherein, the corresponding relation in Fig. 1 between Reference numeral and component names is:
1 refrigeration system, 2 compressors, 3 outdoor heat exchangers, 4 driver modules, 5 first throttle devices, 6 second throttling arrangements, 7 first checkout gears, 8 second detection devices, 9 the 3rd throttling arrangements, 10 cross valves, 11 oil eliminators, 12 gas-liquid separators, 13 first capillaries, 14 second capillaries, 15 magnetic valves.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 1 shows the structural representation of refrigeration system according to an embodiment of the invention.
As shown in Figure 1, refrigeration system 1 according to an embodiment of the invention, comprising: compressor 2, outdoor heat exchanger 3 and indoor heat exchanger; Driver module 4, carries out work for driving described compressor 2; First throttle device 5, described first throttle device 5 is connected between described outdoor heat exchanger 3 and described driver module 4; Second throttling arrangement 6, described second throttling arrangement 6 is connected between described driver module 4 and described indoor heat exchanger; First checkout gear 7, is arranged on the position at described driver module 4 place, for detecting the current block temperature of described driver module 4, to control the aperture size of described first throttle device 5; Second detection device 8, is arranged between described first throttle device 5 and described driver module 4, for detecting the current refrigerant temperature of the refrigerant by described first throttle device 5, to control the aperture size of described second throttling arrangement 6.
According to the refrigeration system 1 of the embodiment of the present invention, condensation liquefaction is carried out by outdoor heat exchanger 3 pairs of refrigerants, the temperature of refrigerant is reduced, and the aperture size of first throttle device 5 is controlled by the current block temperature that the first checkout gear 7 detects driver module 4, thus flow into the flow of driver module 4 by the refrigerant controlling low temperature and control the degree that refrigerant lowers the temperature to driver module 4, thus ensure the safe and stable operation of driver module 4, such as, when current block temperature is too high, the aperture that can increase first throttle device 5 reduces the temperature of driver module 4 quickly and effectively, in addition, the current refrigerant temperature of the refrigerant after heat exchange is detected by second detection device 8, the aperture size of the second throttling arrangement 6 is controlled according to current refrigerant temperature, to control the flow that the refrigerant after heat exchange flows out driver module 4, avoid because current refrigerant temperature is too low and cause the automatically controlled condensation that occurs near driver module 4, and then guarantee that the automatically controlled long-term safety near driver module 4 and driver module 4 is stably run while reduction driver module 4 temperature, extend the service life of refrigeration system further.
In addition, the refrigeration system 1 provided according to the above embodiment of the present invention also has following additional technical feature:
According to one embodiment of present invention, described second throttling arrangement 6 is connected between described driver module 4 and the outlet of described indoor heat exchanger.
According to the refrigeration system 1 of the embodiment of the present invention, by the second throttling arrangement 6 is connected between driver module 4 and the outlet of indoor heat exchanger, can be controlled by the flow of the aperture size of the second throttling arrangement 6 to the refrigerant flowing out driver module 4, thus avoid because current refrigerant temperature is too low and cause the automatically controlled condensation that occurs near driver module 4, and then guarantee that the automatically controlled long-term safety near driver module 4 and driver module 4 is stably run while reduction driver module 4 temperature, extend the service life of refrigeration system further.
According to one embodiment of present invention, also comprise: the 3rd throttling arrangement 9, described 3rd throttling arrangement 9 is connected between described outdoor heat exchanger 3 and described first throttle device 5; Cross valve 10, described cross valve 10 comprises the first port to the 4th port, described first port is connected to the entrance of described outdoor heat exchanger 3, described second port is connected to the outlet of described indoor heat exchanger, described 3rd port is connected to the gas outlet of oil eliminator 11, and described 4th port is connected to the entrance of gas-liquid separator 12; First capillary 13 and the second capillary 14, one end of described first capillary 13 is connected to the first oil-out of described oil eliminator 11, the other end of described first capillary 13 is connected to the gas returning port of described compressor 2, one end of described second capillary 14 is connected to the second oil-out of described oil eliminator 11, and the other end of described second capillary 14 is connected to the gas returning port of described compressor 2 by magnetic valve 15; And the gas outlet of described compressor 2 is connected to the entrance of described oil eliminator 11; The outlet of described gas-liquid separator 12 is connected to the gas returning port of described compressor 2.
According to the refrigeration system 1 of the embodiment of the present invention, the refrigerant of low-temp low-pressure gaseous state is compressed into the refrigerant of high pressure gaseous by compressor 2, the refrigerant of high pressure gaseous flow to outdoor heat exchanger 3 after oil eliminator 11 and cross valve 10, the refrigerant condensate liquid of high pressure gaseous is changed into the refrigerant of normal temperature high voltage liquid state by outdoor heat exchanger 3, and the flow of the refrigerant flowed in driver module 4 and outdoor heat exchanger 3 is controlled by the aperture size of the 3rd throttling arrangement 9, when refrigerant flow to the driver module 4 driving compressor 2 to work, the temperature of driver module 4 is higher, therefore, when the refrigerant of normal temperature high voltage liquid state flow to the higher driver module 4 of temperature, refrigerant and the driver module 4 of normal temperature high voltage liquid state carry out heat exchange (particularly, the refrigerant of normal temperature high voltage liquid state and the fin of driver module 4 carry out heat exchange), the heat of driver module 4 is taken away, thus driver module 4 is lowered the temperature, then by indoor heat exchanger, the refrigerant that evaporation endothermic becomes low-temp low-pressure gaseous state is carried out to the refrigerant after heat exchange, the refrigerant of low-temp low-pressure gaseous state is got back in compressor 2 through cross valve 10 and gas-liquid separator 12, circulation like this, driver module 4 and refrigerant is made constantly to carry out heat exchange, thus the temperature of driver module 4 is reduced, and then ensure the normal work of driver module 4, and capillary is used for carrying out throttling to refrigerant, to control the flow of refrigerant.
Fig. 2 shows the schematic flow sheet of the control method of refrigeration system according to an embodiment of the invention.
As shown in Figure 2, the control method of refrigeration system according to an embodiment of the invention, for controlling the refrigeration system work according to any one of technique scheme, described control method comprises:
Step S1, detects the current block temperature of the current time of described driver module;
Step S2, obtains the averaging module temperature of the described driver module within a predetermined period before described current time;
Step S3, judges whether the difference of described current block temperature and described averaging module temperature is less than the first preset value, if the determination result is YES, then controls described first throttle device and keeps current aperture, otherwise, control the aperture increasing described first throttle device.
According to the control method of the refrigeration system of the embodiment of the present invention, by the averaging module temperature of the driver module within a predetermined period before the current block temperature of the current time of driver module and current time being compared and judging whether the difference of current block temperature and averaging module temperature is less than the first preset value, and when judging that the difference of current block temperature and averaging module temperature is less than the first preset value, illustrate that first throttle device controls the flow that refrigerant flow to driver module and can meet the demand reducing driver module temperature, then control first throttle device and keep current aperture, otherwise, control the aperture increasing first throttle device, with the flow of timely adjustment refrigerant, so, realize carrying out promptly lowering the temperature in time to driver module, ensure that driver module can run safely and effectively.
After the described first throttle device of control keeps current aperture or increases the aperture of described first throttle device, also comprise: again perform described step S1, described step S2 and described step S3.
According to the control method of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of first throttle device being controlled accordingly, again perform abovementioned steps, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to realize the temperature reducing driver module safely and effectively.
Fig. 3 shows the schematic flow sheet of the control method of refrigeration system according to another embodiment of the invention.
As shown in Figure 3, the control method of refrigeration system according to an embodiment of the invention, for controlling the refrigeration system work according to any one of technique scheme, described control method comprises: step S11: the current refrigerant temperature before detecting by described driver module; Step S21: obtain current environment dew-point temperature; Step S31: judge whether the difference of described current refrigerant temperature and described current environment dew-point temperature is greater than the second preset value, if the determination result is YES, then control described second throttling arrangement and keep current aperture, otherwise, control the aperture reducing described second throttling arrangement.
According to the control method of the refrigeration system of the embodiment of the present invention, by the current refrigerant temperature before driver module and current environment dew-point temperature are compared, judge whether the difference of current refrigerant temperature and current environment dew-point temperature is greater than the second preset value, and when judging that the difference of current refrigerant temperature and current environment dew-point temperature is larger, then illustrate that flowing out automatically controlled that the refrigerant of driver module can not cause near driver module under current refrigerant temperature occurs condensation, keep the current aperture of the second throttling arrangement, otherwise, control the aperture of reduction second throttling arrangement, the flow of the refrigerant of module thus control flow check is overdrived, the temperature avoiding the refrigerant owing to flowing through driver module is too low and cause the automatically controlled condensation that occurs near driver module, to improve stability and the security of module operation, and then extend the service life of refrigeration system.
According to one embodiment of present invention, after the described first throttle device of control keeps current aperture or increases the aperture of described first throttle device, also comprise: again perform described step S11, described step S21 and described step S31.
According to the control method of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of the second throttling arrangement being controlled accordingly, again perform abovementioned steps, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to make driver module and automatically controlled near it safely and steadily run, and then extend the service life of refrigeration system.
Fig. 4 shows the structural representation of the control device of refrigeration system according to an embodiment of the invention.
As shown in Figure 4, the control device 400 of refrigeration system according to an embodiment of the invention, for controlling the refrigeration system work according to any one of technique scheme, described control device 400 comprises: the first detecting unit 402, for detecting the current block temperature of the current time of described driver module; First computing unit 404, for obtaining the averaging module temperature of the described driver module within a predetermined period before described current time; First judging unit 406, for judging whether the difference of described current block temperature and described averaging module temperature is less than the first preset value; First control unit 408, for when judged result is for being, controls described first throttle device and keeping current aperture, otherwise, control the aperture increasing described first throttle device.。
According to the control device 400 of the refrigeration system of the embodiment of the present invention, by the averaging module temperature of the driver module within a predetermined period before the current block temperature of the current time of driver module and current time being compared and judging whether the difference of current block temperature and averaging module temperature is less than the first preset value, and when judging that the difference of current block temperature and averaging module temperature is less than the first preset value, illustrate that first throttle device controls the flow that refrigerant flow to driver module and can meet the demand reducing driver module temperature, then control first throttle device and keep current aperture, otherwise, control the aperture increasing first throttle device, with the flow of timely adjustment refrigerant, so, realize carrying out promptly lowering the temperature in time to driver module, ensure that driver module can run safely and effectively.
According to one embodiment of present invention, also comprise: the first scheduling unit 410, after keeping current aperture at the described first throttle device of control or increase the aperture of described first throttle device, execution cost first detecting unit 402 detects described current block temperature again, described first computing unit 404 obtains described averaging module temperature again, described first judging unit 406 judges the difference of described current block temperature and described averaging module temperature and the magnitude relationship of described first preset value again, described first control unit 408 controls the aperture of described first throttle device again according to judged result.
According to the control device 400 of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of first throttle device being controlled accordingly, again perform aforementioned operation, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to realize the temperature reducing driver module safely and effectively.
Fig. 5 shows the structural representation of the control device of refrigeration system according to an embodiment of the invention.
As shown in Figure 5, the control device 500 of refrigeration system according to an embodiment of the invention, for controlling the refrigeration system work according to any one of technique scheme, described control device 500 comprises: the second detecting unit 502, for the current refrigerant temperature before detecting by described driver module; Second computing unit 504, for obtaining current environment dew-point temperature; Second judging unit 506, for judging whether the difference of described current refrigerant temperature and described current environment dew-point temperature is greater than the second preset value; Second control unit 508, for controlling the aperture size of described second throttling arrangement according to judged result, to avoid automatically controlledly near described driver module occurring condensation.
According to the control device 500 of the refrigeration system of the embodiment of the present invention, by the current refrigerant temperature before driver module and current environment dew-point temperature are compared, judge whether the difference of current refrigerant temperature and current environment dew-point temperature is greater than the second preset value, and when judging that the difference of current refrigerant temperature and current environment dew-point temperature is larger, then illustrate that flowing out automatically controlled that the refrigerant of driver module can not cause near driver module under current refrigerant temperature occurs condensation, keep the current aperture of the second throttling arrangement, otherwise, control the aperture of reduction second throttling arrangement, the flow of the refrigerant of module thus control flow check is overdrived, the temperature avoiding the refrigerant owing to flowing through driver module is too low and cause the automatically controlled condensation that occurs near driver module, to improve stability and the security of module operation, and then extend the service life of refrigeration system.
According to one embodiment of present invention, also comprise: the second scheduling unit 510, after keeping current aperture at described second throttling arrangement of control or reduce the aperture of described second throttling arrangement, execution cost second detecting unit 502 detects described current refrigerant temperature again, described second computing unit 504 obtains described current environment dew-point temperature again, described second judging unit 506 judges the difference of described current refrigerant temperature and described current environment dew-point temperature and the magnitude relationship of described second preset value again, described second control unit 508 controls the aperture of described second throttling arrangement again according to judged result.
According to the control device 500 of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of the second throttling arrangement being controlled accordingly, again perform aforementioned operation, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to make driver module and automatically controlled near it safely and steadily run, and then extend the service life of refrigeration system.
According to the control device 500 of the refrigeration system of the embodiment of the present invention, after according to judged result the aperture of the second throttling arrangement being controlled accordingly, again perform aforementioned operation, property performance period cycle detection, judgement and control, all the time the aperture that throttling arrangement keeps suitable is made, to make driver module and automatically controlled near it safely and steadily run, and then extend the service life of refrigeration system.
Fig. 6 shows the structural representation of air-conditioner according to an embodiment of the invention.
As shown in Figure 6, air-conditioner 600 according to an embodiment of the invention, comprising: the refrigeration system 602 (being equivalent to the refrigeration system 1 of the embodiment shown in Fig. 1) according to any one of technique scheme; And the control device 604 (being equivalent to the control device 400 of the refrigeration system of the embodiment shown in Fig. 4) of refrigeration system according to any one of technique scheme and the control device 606 (being equivalent to the control device 500 of the refrigeration system of the embodiment shown in Fig. 5) of refrigeration system, therefore, this air-conditioner 600 has the technique effect identical with the control device 606 of refrigeration system with the control device 604 of the refrigeration system 602 according to any one of technique scheme, refrigeration system, does not repeat them here.
Fig. 7 shows the schematic flow sheet of the control method of refrigeration system according to still another embodiment of the invention.
As shown in Figure 7, the control method of refrigeration system according to another embodiment of the invention, after compressor receives start-up command startup, within the regular hour, (as 5 minutes) first throttle device is in turning off standby state, after a certain time (as 5 minutes), according to the current block temperature Tf of the driver module that module temperature sensor (the first checkout gear) detects, to first throttle device initial opening, then enter following concrete steps:
Step 702, detects the current block temperature Tf of driver module in real time or periodically.
Step 704, the averaging module temperature of the described driver module within a predetermined period before the current block temperature detected and current time is compared, obtain both temperature difference △ T, judge whether △ T is less than c (judging whether the difference of current block temperature and averaging module temperature is less than the first preset value).Such as, set a time cycle f, obtaining time cycle f inner module temperature is Tfa (averaging module temperature), compared by the driver module temperature Tf detected and upper one-period module mean temperature Tfa, obtaining both temperature difference is Δ T, sets a parameter c (the first preset value), judge whether Δ T-c is less than 0, when judged result is for being, enter step 706, otherwise enter step 708.
Step 706, if it is determined that △ T is less than c, then first throttle device keeps current aperture.
Step 708, if it is determined that △ T is not less than c, then increases the aperture of first throttle device, the temperature of the effective low driver module that ensures safety.
Repeat step 702 ~ step 708.
In this technical scheme, the aperture size of first throttle device is controlled by the current block temperature Tf detected and the module mean temperature Tfa in the previous time cycle, with timely adjustment cold medium flux, so, the temperature having low driver module is safely and effectively realized.
Fig. 8 shows the schematic flow sheet of the control method of refrigeration system according to still a further embodiment.
As shown in Figure 8, the control method of refrigeration system according to still another embodiment of the invention, during refrigerating operaton, compressor receives start-up command and is enabled in (as 5 minutes) second throttling arrangement in the regular hour and is in turning off standby state, after a certain time (as 5 minutes), according to the current refrigerant temperature Tj that ice-forming processes outside pipes sensor (second detection device) detects, to the second throttling arrangement initial opening, then enter following concrete steps:
Step 802, calculates current environment dew-point temperature Td according to the temperature of current environment and relative humidity meter, and detects the current refrigerant temperature Tj of refrigerant.
Step 804, calculates the difference △ T of current refrigerant temperature and current environment dew-point temperature, judges whether △ T is greater than parameter d (the second preset value), when judged result is for being, enters step 806, otherwise enters step 808.
Step 806, if it is determined that △ T is greater than parameter d, then the second throttling arrangement keeps current aperture, for preventing automatically controlledly near compressor module occurring condensation, needs to guarantee that Δ T=Tj-Td is greater than given parameters d.
Step 808, if it is determined that △ T is not more than parameter d, then reduces the aperture of the second throttling arrangement.
Repeat step 802 ~ step 808.
In this technical scheme, second throttling arrangement aperture size is regulated by the difference of current refrigerant temperature Tj and current environment dew-point temperature Td, for preventing automatically controlledly near compressor module occurring condensation, need to guarantee that Δ T=Tj-Td is greater than given parameters d, so, after can effectively preventing throttling automatically controlledly near driver module there is condensation in too low the causing of refrigerant temperature, realize guaranteeing driver module and automatically controlled long-term safety stable operation while reduction driver module temperature, thus promote Consumer's Experience.
More than be described with reference to the accompanying drawings technical scheme of the present invention, by outdoor heat exchanger, condensation liquefaction is carried out to refrigerant, the temperature of refrigerant is reduced, and the aperture size of first throttle device is controlled by the current block temperature of the first checkout gear detection driver module, thus flow into the flow of driver module by the refrigerant controlling low temperature and control the degree that refrigerant lowers the temperature to driver module, thus ensure the safe and stable operation of driver module, such as, when current block temperature is too high, the aperture that can increase first throttle device reduces the temperature of driver module quickly and effectively, in addition, the current refrigerant temperature of the refrigerant after heat exchange is detected by second detection device, the aperture size of the second throttling arrangement is controlled according to current refrigerant temperature, to control the flow that the refrigerant after heat exchange flows out driver module, avoid because current refrigerant temperature is too low and cause the automatically controlled condensation that occurs near driver module, and then guarantee that the automatically controlled long-term safety near driver module and driver module is stably run while reduction driver module temperature, extend the service life of refrigeration system further.
In the present invention, term " first ", " second " object only for describing, and instruction or hint relative importance can not be interpreted as; Term " multiple " represents two or more; Term " connection " etc. all should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this description, specific features, structure, material or feature that the description of term " embodiment " " specific embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a refrigeration system, is characterized in that, comprising:
Compressor, outdoor heat exchanger and indoor heat exchanger;
Driver module, carries out work for driving described compressor;
First throttle device, described first throttle device is connected between described outdoor heat exchanger and described driver module;
Second throttling arrangement, described second throttling arrangement is connected between described driver module and described indoor heat exchanger;
First checkout gear, is arranged on the position at described driver module place, for detecting the current block temperature of described driver module, to control the aperture size of described first throttle device;
Second detection device, is arranged between described first throttle device and described driver module, for detecting the current refrigerant temperature of the refrigerant by described first throttle device, to control the aperture size of described second throttling arrangement.
2. refrigeration system according to claim 1, is characterized in that, described second throttling arrangement is connected between the outlet of described driver module and described indoor heat exchanger.
3. refrigeration system according to claim 2, is characterized in that, also comprises:
3rd throttling arrangement, described 3rd throttling arrangement is connected between described outdoor heat exchanger and described first throttle device.
4. refrigeration system according to any one of claim 1 to 3, is characterized in that, also comprises:
Cross valve, described cross valve comprises the first port to the 4th port, described first port is connected to the entrance of described outdoor heat exchanger, described second port is connected to the outlet of described indoor heat exchanger, described 3rd port is connected to the gas outlet of oil eliminator, and described 4th port is connected to the entrance of gas-liquid separator;
First capillary and the second capillary, one end of described first capillary is connected to the first oil-out of described oil eliminator, the other end of described first capillary is connected to the gas returning port of described compressor, one end of described second capillary is connected to the second oil-out of described oil eliminator, and the other end of described second capillary is connected to the gas returning port of described compressor by magnetic valve.
5. refrigeration system according to claim 4, is characterized in that,
The gas outlet of described compressor is connected to the entrance of described oil eliminator;
The outlet of described gas-liquid separator is connected to the gas returning port of described compressor.
6. a control method for refrigeration system, is characterized in that, for controlling the refrigeration system work according to any one of claim 1 to 5, described control method comprises:
Step S1: the current block temperature detecting the current time of described driver module;
Step S2: the averaging module temperature obtaining the described driver module within a predetermined period before described current time;
Step S3: judge whether the difference of described current block temperature and described averaging module temperature is less than the first preset value, if the determination result is YES, then controls described first throttle device and keeps current aperture, otherwise, control the aperture increasing described first throttle device;
And/or
Step S11: the current refrigerant temperature before detecting by described driver module;
Step S21: obtain current environment dew-point temperature;
Step S31: judge whether the difference of described current refrigerant temperature and described current environment dew-point temperature is greater than the second preset value, if the determination result is YES, then control described second throttling arrangement and keep current aperture, otherwise, control the aperture reducing described second throttling arrangement.
7. the control method of refrigeration system according to claim 6, is characterized in that,
After the described first throttle device of control keeps current aperture or increases the aperture of described first throttle device, also comprise: again perform described step S1, described step S2 and described step S3;
And/or
After described second throttling arrangement of control keeps current aperture or reduces the aperture of described second throttling arrangement, also comprise: again perform described step S11, described step S21 and described step S31.
8. a control device for refrigeration system, is characterized in that, for controlling the refrigeration system work according to any one of claim 1 to 5, described control device comprises:
First detecting unit, for detecting the current block temperature of the current time of described driver module;
First computing unit, for obtaining the averaging module temperature of the described driver module within a predetermined period before described current time;
First judging unit, for judging whether the difference of described current block temperature and described averaging module temperature is less than the first preset value;
First control unit, for when judged result is for being, controls described first throttle device and keeping current aperture, otherwise, control the aperture increasing described first throttle device;
And/or
Second detecting unit, for the current refrigerant temperature before detecting by described driver module;
Second computing unit, for obtaining current environment dew-point temperature;
Second judging unit, for judging whether the difference of described current refrigerant temperature and described current environment dew-point temperature is greater than the second preset value;
Second control unit, for when judged result is for being, controls described second throttling arrangement and keeping current aperture, otherwise, control the aperture reducing described second throttling arrangement.
9. the control device of refrigeration system according to claim 8, is characterized in that, also comprises:
First scheduling unit, after keeping current aperture at the described first throttle device of control or increase the aperture of described first throttle device, the difference that execution cost first detecting unit detects described current block temperature again, described first computing unit obtains described averaging module temperature again, described first judging unit judges described current block temperature and described averaging module temperature again and the magnitude relationship of described first preset value, described first control unit control the aperture of described first throttle device again according to judged result;
And/or
Second scheduling unit, after keeping current aperture at described second throttling arrangement of control or reduce the aperture of described second throttling arrangement, the difference that execution cost second detecting unit detects described current refrigerant temperature again, described second computing unit obtains described current environment dew-point temperature again, described second judging unit judges described current refrigerant temperature and described current environment dew-point temperature again and the magnitude relationship of described second preset value, described second control unit control the aperture of described second throttling arrangement again according to judged result.
10. an air-conditioner, is characterized in that, comprising:
Refrigeration system according to any one of claim 1 to 5; And
The control device of refrigeration system as claimed in claim 8 or 9.
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