CN104819595B - refrigeration system, control method and device and air conditioner - Google Patents
refrigeration system, control method and device and air conditioner Download PDFInfo
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- CN104819595B CN104819595B CN201510240509.8A CN201510240509A CN104819595B CN 104819595 B CN104819595 B CN 104819595B CN 201510240509 A CN201510240509 A CN 201510240509A CN 104819595 B CN104819595 B CN 104819595B
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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 present invention proposes a kind of refrigeration system, a kind of control method, a kind of control device and a kind of air conditioner, wherein, the refrigeration system includes：Compressor, outdoor heat exchanger and indoor heat exchanger；Drive module；First throttle device, is connected between outdoor heat exchanger and drive module；Second throttling device, is connected between drive module and indoor heat exchanger；First detection means, is arranged on the position where drive module, the current block temperature for detecting drive module, to control the aperture size of first throttle device；Second detection device, is arranged between first throttle device and drive module, the current refrigerant temperature for detecting the refrigerant by first throttle device, to control the aperture size of second throttling device.By technical scheme, the temperature of drive module can be not only effectively reduced, the temperature of the refrigerant due to flowing out drive module can also be avoided relatively low and cause drive module and automatically controlled near it condensation occur.
Description
Technical field
The present invention relates to household electrical appliance technical field, in particular to a kind of refrigeration system, a kind of control of refrigeration system
Method processed, a kind of control device of refrigeration system and a kind of air conditioner.
Background technology
When air conditioner refrigerating is run, the drive module caloric value of compressor is than larger, and current drive module cooling is generally used
The outer air-cooled forced convertion radiating of machine, the heat that drive module is sent is exported by fin, then will by outdoor fan forced convertion
The fin of drive module carries out air-cooled.
But, condenser outwardly distributes heat during due to refrigerating operaton, this to pass through outer machine when environment temperature is higher
The effect of air-cooled reduction drive module temperature is not fine, and it is too high to easily cause drive module temperature, and then influences driving mould
Block reliability of operation and security.
Therefore, the temperature of drive module how is effectively reduced, so as to improve the stability and safety of drive module operation
Property, as technical problem urgently to be resolved hurrily.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of refrigeration system.
It is another object of the present invention to propose a kind of control method of refrigeration system.
A further object of the present invention is to propose a kind of control device of refrigeration system.
Another object of the present invention is to propose a kind of air conditioner.
To realize at least one above-mentioned purpose, embodiment according to the first aspect of the invention, it is proposed that one kind refrigeration system
System, including：Compressor, outdoor heat exchanger and indoor heat exchanger；Drive module, for driving the compressor to be operated；The
One throttling arrangement, the first throttle device is connected between the outdoor heat exchanger and the drive module；Second throttling dress
Put, the second throttling device is connected between the drive module and the indoor heat exchanger；First detection means, is arranged on
Position where the drive module, the current block temperature for detecting the drive module, to control the first throttle
The aperture size of device；Second detection device, is arranged between the first throttle device and the drive module, for detecting
By the current refrigerant temperature of the refrigerant of the first throttle device, to control the aperture size of the second throttling device.
Refrigeration system according to embodiments of the present invention, carries out condensation liquefaction to refrigerant by outdoor heat exchanger, makes refrigerant
Temperature is reduced, and detects the current block temperature of drive module to control the aperture of first throttle device by the first detection means
Size, so as to control the journey that refrigerant is cooled to drive module by controlling the refrigerant of low temperature to flow into the flow of drive module
Degree, so as to ensure the safe and stable operation of drive module, for example, when current block temperature is too high, first throttle can be increased
The aperture of device quickly and effectively reduces the temperature of drive module, in addition, being detected by second detection device after heat exchange
The current refrigerant temperature of refrigerant, the aperture size of second throttling device is controlled according to current refrigerant temperature, to control after heat exchange
Refrigerant flow out drive module flow, it is to avoid cause the automatically controlled appearance near drive module because current refrigerant temperature is too low
Condensation, and then ensure that the automatically controlled long-term safety near drive module and drive module is steady while drive module temperature is reduced
Surely run, further extend the service life of refrigeration system.
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, the second throttling device is connected to the drive module and the interior is changed
Between the outlet of hot device.
Refrigeration system according to embodiments of the present invention, by the way that second throttling device is connected into drive module and indoor heat exchange
Between the outlet of device, the flow for flowing out the refrigerant of drive module can be controlled by the aperture size of second throttling device
System, thus avoid due to current refrigerant temperature is too low and cause near drive module it is automatically controlled there is condensation, and then driven in reduction
Ensure that the automatically controlled long-term safety near drive module and drive module is stably run while dynamic model deblocking temperature, further
Extend the service life of refrigeration system.
According to one embodiment of present invention, in addition to：3rd throttling arrangement, the 3rd throttling arrangement is connected to described
Between outdoor heat exchanger and the first throttle device；Four-way valve, the four-way valve includes first port to the 4th port, described
First port is connected to the entrance of the outdoor heat exchanger, and the second port is connected to the outlet of the indoor heat exchanger, institute
The gas outlet that the 3rd port is connected to oil eliminator is stated, the 4th port is connected to the entrance of gas-liquid separator；First capillary
Pipe and the second capillary, one end of first capillary is connected to the first oil-out of the oil eliminator, described first mao
The other end of tubule is connected to the gas returning port of the compressor, and one end of second capillary is connected to the oil eliminator
Second oil-out, the other end of second capillary is connected to the gas returning port of the compressor by magnetic valve；And it is described
The gas outlet of compressor is connected to the entrance of the oil eliminator；The outlet of the gas-liquid separator is connected to the compressor
Gas returning port.
The gaseous refrigerant of low-temp low-pressure is compressed into HTHP gas by refrigeration system according to embodiments of the present invention, compressor
The refrigerant of state, the refrigerant of high pressure gaseous flow to outdoor heat exchanger after oil eliminator and four-way valve, and outdoor heat exchanger will
The refrigerant condensation liquefaction of high pressure gaseous is into the refrigerant of normal temperature high voltage liquid, and the aperture size control for passing through the 3rd throttling arrangement
System flows into the flow of drive module and the refrigerant in outdoor heat exchanger, and the driving mould of compressor operating is driven when refrigerant is flow to
During block, the temperature of drive module is higher, therefore, when the refrigerant of normal temperature high voltage liquid flow to the higher drive module of temperature, often
The refrigerant of warm high-pressure liquid and drive module carry out heat exchange, and (specifically, the refrigerant of normal temperature high voltage liquid and drive module dissipate
Backing carries out heat exchange), the heat of drive module is taken away, so as to cool to drive module, then passes through indoor heat exchange
Device is evaporated heat absorption to the refrigerant after heat exchange and becomes the gaseous refrigerant of low-temp low-pressure, and the gaseous refrigerant of low-temp low-pressure passes through four
Port valve and gas-liquid separator are returned in compressor, so circulation, drive module is constantly carried out heat exchange with refrigerant, so that driving
The temperature reduction of dynamic model block, and then ensure the normal work of drive module, and capillary is used to throttle to refrigerant, to control
The flow of refrigerant.
Embodiment according to the second aspect of the invention, it is proposed that a kind of control method of refrigeration system, for control
The refrigeration system work any one of technical scheme is stated, the control method includes：Step S1：Detect the drive module
Current time current block temperature；Step S2：It is described within a predetermined period before obtaining the current time
The averaging module temperature of drive module；Step S3：Judging the difference of the current block temperature and the averaging module temperature is
It is no to be less than the first preset value, if the determination result is YES, then control the first throttle device to keep current aperture, otherwise, control
Increase the aperture of the first throttle device.
The control method of refrigeration system according to embodiments of the present invention, passes through the current mould the current time of drive module
The averaging module temperature of deblocking temperature and the drive module within a predetermined period before current time is compared and judged
Whether the difference of current block temperature and averaging module temperature is less than the first preset value, and works as judgement current block temperature and flat
When the difference of equal module temperature is less than the first preset value, illustrate that first throttle device controls refrigerant to flow to the flow of drive module can
To meet the demand of reduction drive module temperature, then first throttle device is controlled to keep current aperture, otherwise, control increase first
The aperture of throttling arrangement, with the flow of timely adjustment refrigerant, carries out promptly cooling in time to drive module, protects in this way, realizing
Having demonstrate,proved drive module can safely and effectively run.
According to one embodiment of present invention, controlling the first throttle device to keep current aperture or increasing described the
After the aperture of one throttling arrangement, in addition to：The step S1, the step S2 and the step S3 are performed again.
The control method of refrigeration system according to embodiments of the present invention, is opened first throttle device according to judged result
Degree is carried out after controlling accordingly, abovementioned steps is performed again, property performance period cycle detection, judgement and control make all the time
Throttling arrangement keeps appropriate aperture, and the temperature of drive module is safely and effectively reduced to realize.
Embodiment according to the third aspect of the invention we, it is proposed that a kind of control method of refrigeration system, for control
The refrigeration system work any one of technical scheme is stated, the control method includes：Step S11：Detection is driven by described
Current refrigerant temperature before dynamic model block；Step S21：Obtain current environment dew-point temperature；Step S31：Judge described current cold
Whether the difference of matchmaker's temperature and the current environment dew-point temperature is more than the second preset value, if the determination result is YES, then controls institute
State second throttling device and keep current aperture, otherwise, control reduces the aperture of the second throttling device.
The control method of refrigeration system according to embodiments of the present invention, by by the current refrigerant temperature before drive module
It is compared with current environment dew-point temperature, judges whether the difference of current refrigerant temperature and current environment dew-point temperature is more than the
Two preset values, and when judging that current refrigerant temperature and the difference of current environment dew-point temperature are larger, then explanation outflow driving
The refrigerant of module can not cause under current refrigerant temperature near drive module it is automatically controlled there is condensation, keep the second throttling dress
The current aperture put, otherwise, control reduce the aperture of second throttling device, the stream of the refrigerant of module so that controlling stream is overdrived
Amount, it is to avoid the temperature of the refrigerant due to flowing through drive module is too low and cause near drive module it is automatically controlled there is condensation, with
The stability and security of module operation are improved, and then extends the service life of refrigeration system.
According to one embodiment of present invention, controlling the first throttle device to keep current aperture or increasing described the
After the aperture of one throttling arrangement, in addition to：The step S11, the step S21 and the step S31 are performed again.
The control method of refrigeration system according to embodiments of the present invention, is opened second throttling device according to judged result
Degree is carried out after controlling accordingly, abovementioned steps is performed again, property performance period cycle detection, judgement and control make all the time
Throttling arrangement keeps appropriate aperture, so that drive module and automatically controlled near it safely and steadily run, and then extends system
The service life of cooling system.
Embodiment according to the fourth aspect of the invention, it is proposed that a kind of control device of refrigeration system, for control
The refrigeration system work any one of technical scheme is stated, the control device includes：First detection unit, for detecting
State the current block temperature at the current time of drive module；First computing unit, for obtaining one before the current time
The averaging module temperature of the drive module within individual predetermined period；First judging unit, for judging the current block
Whether the difference of temperature and the averaging module temperature is less than the first preset value；First control unit, for being in judged result
When being, the first throttle device is controlled to keep current aperture, otherwise, the aperture of the control increase first throttle device.
The control device of refrigeration system according to embodiments of the present invention, passes through the current mould the current time of drive module
The averaging module temperature of deblocking temperature and the drive module within a predetermined period before current time is compared and judged
Whether the difference of current block temperature and averaging module temperature is less than the first preset value, and works as judgement current block temperature and flat
When the difference of equal module temperature is less than the first preset value, illustrate that first throttle device controls refrigerant to flow to the flow of drive module can
To meet the demand of reduction drive module temperature, then first throttle device is controlled to keep current aperture, otherwise, control increase first
The aperture of throttling arrangement, with the flow of timely adjustment refrigerant, carries out promptly cooling in time to drive module, protects in this way, realizing
Having demonstrate,proved drive module can safely and effectively run.
According to one embodiment of present invention, in addition to：First scheduling unit, for controlling the first throttle device
After the aperture for keeping current aperture or the increase first throttle device, dispatch first detection unit and detect described again
Current block temperature, first computing unit obtain the averaging module temperature, first judging unit and sentenced again again
The magnitude relationship of the difference and first preset value of the current block temperature of breaking and the averaging module temperature, described first
Control unit controls the aperture of the first throttle device again according to judged result.
The control device of refrigeration system according to embodiments of the present invention, is opened first throttle device according to judged result
Degree is carried out after controlling accordingly, aforementioned operation is performed again, property performance period cycle detection, judgement and control make all the time
Throttling arrangement keeps appropriate aperture, and the temperature of drive module is safely and effectively reduced to realize.
Embodiment according to the fifth aspect of the invention, it is proposed that a kind of control device of refrigeration system, for control
The refrigeration system work any one of technical scheme is stated, the control device includes：Second detection unit, it is logical for detecting
Current refrigerant temperature before crossing the drive module；Second computing unit, for obtaining current environment dew-point temperature；Second sentences
Disconnected unit, presets for judging whether the difference of the current refrigerant temperature and the current environment dew-point temperature is more than second
Value；Second control unit, during for being in judged result, controls the second throttling device to keep current aperture, otherwise, control
System reduces the aperture of the second throttling device.
The control device of refrigeration system according to embodiments of the present invention, by by the current refrigerant temperature before drive module
It is compared with current environment dew-point temperature, judges whether the difference of current refrigerant temperature and current environment dew-point temperature is more than the
Two preset values, and when judging that current refrigerant temperature and the difference of current environment dew-point temperature are larger, then explanation outflow driving
The refrigerant of module can not cause under current refrigerant temperature near drive module it is automatically controlled there is condensation, keep the second throttling dress
The current aperture put, otherwise, control reduce the aperture of second throttling device, the stream of the refrigerant of module so that controlling stream is overdrived
Amount, it is to avoid the temperature of the refrigerant due to flowing through drive module is too low and cause near drive module it is automatically controlled there is condensation, with
The stability and security of module operation are improved, and then extends the service life of refrigeration system.
According to one embodiment of present invention, in addition to：Second scheduling unit, for controlling the second throttling device
After the aperture for keeping current aperture or the reduction second throttling device, dispatch second detection unit and detect described again
Current refrigerant temperature, second computing unit obtain the current environment dew-point temperature, second judging unit again again
The magnitude relationship of the difference and second preset value of the secondary judgement current refrigerant temperature and the current environment dew-point temperature,
Second control unit controls the aperture of the second throttling device again according to judged result.
The control device of refrigeration system according to embodiments of the present invention, is opened second throttling device according to judged result
Degree is carried out after controlling accordingly, aforementioned operation is performed again, property performance period cycle detection, judgement and control make all the time
Throttling arrangement keeps appropriate aperture, so that drive module and automatically controlled near it safely and steadily run, and then extends system
The service life of cooling system.
A kind of embodiment according to the sixth aspect of the invention, it is proposed that air conditioner, including：It is any in above-mentioned technical proposal
Refrigeration system described in；And the control device of the refrigeration system any one of above-mentioned technical proposal, therefore, the air-conditioning
Utensil has the control device identical technique effect with the refrigeration system any one of above-mentioned technical proposal and refrigeration system,
It will not be repeated here.
By technical scheme, can not only be effectively reduced the temperature of drive module, can also avoid due to
The temperature for flowing out the refrigerant of drive module is relatively low and causes drive module and automatically controlled near it condensation occur, so as to ensure system
The operation steadily in the long term of cooling system.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, 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 and component names is：
1 refrigeration system, 2 compressors, 3 outdoor heat exchangers, 4 drive modules, 5 first throttle devices, 6 second throttling devices, 7
First detection means, 8 second detection devices, 9 the 3rd throttling arrangements, 10 four-way valves, 11 oil eliminators, 12 gas-liquid separators, 13
First capillary, 14 second capillaries, 15 magnetic valves.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
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, including：Compressor 2, outdoor heat exchanger 3
And indoor heat exchanger；Drive module 4, for driving the compressor 2 to be operated；First throttle device 5, the first throttle
Device 5 is connected between the outdoor heat exchanger 3 and the drive module 4；Second throttling device 6, the second throttling device 6
It is connected between the drive module 4 and the indoor heat exchanger；First detection means 7, is arranged on where the drive module 4
Position, the current block temperature for detecting the drive module 4, to control the aperture size of the first throttle device 5；
Second detection device 8, is arranged between the first throttle device 5 and the drive module 4, and described first is passed through for detecting
The current refrigerant temperature of the refrigerant of throttling arrangement 5, to control the aperture size of the second throttling device 6.
Refrigeration system 1 according to embodiments of the present invention, carries out condensation liquefaction to refrigerant by outdoor heat exchanger 3, makes refrigerant
Temperature reduction, and detect that the current block temperature of drive module 4 controls first throttle device 5 by first detection means 7
Aperture size, so as to control the refrigerant to carry out drive module 4 by the flow for controlling the refrigerant of low temperature to flow into drive module 4
The degree of cooling, so as to ensure the safe and stable operation of drive module 4, for example, when current block temperature is too high, can increase
The aperture of first throttle device 5 quickly and effectively reduces the temperature of drive module 4, in addition, detected by second detection device 8
The current refrigerant temperature of refrigerant after heat exchange, the aperture size of second throttling device 6 is controlled according to current refrigerant temperature, to control
Heat the flow that the refrigerant after exchanging flows out drive module 4, it is to avoid cause drive module 4 attached because current refrigerant temperature is too low
There is condensation in closely automatically controlled, and then ensures while 4 temperature of drive module is reduced near drive module 4 and drive module 4
Automatically controlled long-term safety stably run, further extend refrigeration system service life.
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, the second throttling device 6 is connected to the drive module 4 and the interior
Between the outlet of heat exchanger.
Refrigeration system 1 according to embodiments of the present invention, by the way that second throttling device 6 is connected into drive module 4 and interior
Between the outlet of heat exchanger, the flow for flowing out the refrigerant of drive module 4 can be entered by the aperture size of second throttling device 6
Row control, thus avoid due to current refrigerant temperature is too low and cause near drive module 4 it is automatically controlled there is condensation, and then in drop
Ensure that the automatically controlled long-term safety near drive module 4 and drive module 4 is stably run while low 4 temperature of drive module,
Further extend the service life of refrigeration system.
According to one embodiment of present invention, in addition to：3rd throttling arrangement 9, the 3rd throttling arrangement 9 is connected to institute
State between outdoor heat exchanger 3 and the first throttle device 5；Four-way valve 10, the four-way valve 10 includes first port to the 4th
Port, the first port is connected to the entrance of the outdoor heat exchanger 3, and the second port is connected to the indoor heat exchanger
Outlet, the 3rd port is connected to the gas outlet of oil eliminator 11, and the 4th port is connected to gas-liquid separator 12
Entrance；First capillary 13 and the second capillary 14, one end of first capillary 13 are connected to the oil eliminator 11
First oil-out, the other end of first capillary 13 is connected to the gas returning port of the compressor 2, second capillary 14
One end be connected to the second oil-out of the oil eliminator 11, the other end of second capillary 14 is connected by magnetic valve 15
It is connected to the gas returning port of the compressor 2；And the gas outlet of the compressor 2 is connected to the entrance of the oil eliminator 11；Institute
The outlet for stating gas-liquid separator 12 is connected to the gas returning port of the compressor 2.
The gaseous refrigerant of low-temp low-pressure is compressed into HTHP by refrigeration system 1 according to embodiments of the present invention, compressor 2
Gaseous refrigerant, the refrigerant of high pressure gaseous flow to outdoor heat exchanger 3 after oil eliminator 11 and four-way valve 10, and outdoor is changed
Hot device 3 is by the refrigerant condensation liquefaction of high pressure gaseous into the refrigerant of normal temperature high voltage liquid, and opening by the 3rd throttling arrangement 9
The flow that size control flows into drive module 4 and the refrigerant in outdoor heat exchanger 3 is spent, compressor 2 is driven when refrigerant is flow to
During the drive module 4 of work, the temperature of drive module 4 is higher, therefore, and when the refrigerant of normal temperature high voltage liquid, to flow to temperature higher
During drive module 4, refrigerant and the drive module 4 of normal temperature high voltage liquid carry out heat exchange (specifically, the refrigerant of normal temperature high voltage liquid
Heat exchange is carried out with the fin of drive module 4), the heat of drive module 4 is taken away, so that drive module 4 is cooled,
Then heat absorption is evaporated to the refrigerant after heat exchange by indoor heat exchanger and becomes the gaseous refrigerant of low-temp low-pressure, low-temp low-pressure
Gaseous refrigerant is returned in compressor 2 by four-way valve 10 and gas-liquid separator 12, so circulation, makes drive module 4 and refrigerant
Heat exchange is constantly carried out, so that the temperature reduction of drive module 4, and then the normal work of guarantee drive module 4, and capillary
For being throttled 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 Fig. 2 the control method of refrigeration system according to an embodiment of the invention, for controlling above-mentioned technology
Refrigeration system work any one of scheme, the control method includes：
Step S1, detects the current block temperature at the current time of the drive module；
Step S2, the averaging module of the drive module within a predetermined period before the acquisition current time
Temperature；
Step S3, judges whether the difference of the current block temperature and the averaging module temperature is preset less than first
Value, if the determination result is YES, then controls the first throttle device to keep current aperture, otherwise, the control increase first segment
Flow the aperture of device.
The control method of refrigeration system according to embodiments of the present invention, passes through the current mould the current time of drive module
The averaging module temperature of deblocking temperature and the drive module within a predetermined period before current time is compared and judged
Whether the difference of current block temperature and averaging module temperature is less than the first preset value, and works as judgement current block temperature and flat
When the difference of equal module temperature is less than the first preset value, illustrate that first throttle device controls refrigerant to flow to the flow of drive module can
To meet the demand of reduction drive module temperature, then first throttle device is controlled to keep current aperture, otherwise, control increase first
The aperture of throttling arrangement, with the flow of timely adjustment refrigerant, carries out promptly cooling in time to drive module, protects in this way, realizing
Having demonstrate,proved drive module can safely and effectively run.
After the aperture for controlling the first throttle device to keep current aperture or the increase first throttle device, also
Including：The step S1, the step S2 and the step S3 are performed again.
The control method of refrigeration system according to embodiments of the present invention, is opened first throttle device according to judged result
Degree is carried out after controlling accordingly, abovementioned steps is performed again, property performance period cycle detection, judgement and control make all the time
Throttling arrangement keeps appropriate aperture, and the temperature of drive module is safely and effectively reduced to realize.
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 above-mentioned technology
Refrigeration system work any one of scheme, the control method includes：Step S11：Detection passes through the drive module
Current refrigerant temperature before；Step S21：Obtain current environment dew-point temperature；Step S31：Judge the current refrigerant temperature
Whether it is more than the second preset value with the difference of the current environment dew-point temperature, if the determination result is YES, then controls described second
Throttling arrangement keeps current aperture, otherwise, and control reduces the aperture of the second throttling device.
The control method of refrigeration system according to embodiments of the present invention, by by the current refrigerant temperature before drive module
It is compared with current environment dew-point temperature, judges whether the difference of current refrigerant temperature and current environment dew-point temperature is more than the
Two preset values, and when judging that current refrigerant temperature and the difference of current environment dew-point temperature are larger, then explanation outflow driving
The refrigerant of module can not cause under current refrigerant temperature near drive module it is automatically controlled there is condensation, keep the second throttling dress
The current aperture put, otherwise, control reduce the aperture of second throttling device, the stream of the refrigerant of module so that controlling stream is overdrived
Amount, it is to avoid the temperature of the refrigerant due to flowing through drive module is too low and cause near drive module it is automatically controlled there is condensation, with
The stability and security of module operation are improved, and then extends the service life of refrigeration system.
According to one embodiment of present invention, controlling the first throttle device to keep current aperture or increasing described the
After the aperture of one throttling arrangement, in addition to：The step S11, the step S21 and the step S31 are performed again.
The control method of refrigeration system according to embodiments of the present invention, is opened second throttling device according to judged result
Degree is carried out after controlling accordingly, abovementioned steps is performed again, property performance period cycle detection, judgement and control make all the time
Throttling arrangement keeps appropriate aperture, so that drive module and automatically controlled near it safely and steadily run, and then extends system
The service life of cooling 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, above-mentioned for controlling
Refrigeration system work any one of technical scheme, the control device 400 includes：First detection unit 402, for examining
Survey the current block temperature at the current time of the drive module；First computing unit 404, for obtain the current time it
The averaging module temperature of the drive module within a preceding predetermined period；First judging unit 406, it is described for judging
Whether the difference of current block temperature and the averaging module temperature is less than the first preset value；First control unit 408, for
Judged result is when being, controls the first throttle device to keep current aperture, otherwise, the control increase first throttle device
Aperture..
The control device 400 of refrigeration system according to embodiments of the present invention, passes through working as the current time of drive module
The averaging module temperature of front module temperature and the drive module within a predetermined period before current time is compared simultaneously
Judge whether the difference of current block temperature and averaging module temperature is less than the first preset value, and when judgement current block temperature
When being less than the first preset value with the difference of averaging module temperature, illustrate that first throttle device control refrigerant flow to the stream of drive module
Amount can meet the demand of reduction drive module temperature, then control first throttle device to keep current aperture, otherwise, control increase
The aperture of first throttle device, with the flow of timely adjustment refrigerant, carries out promptly dropping in time in this way, realizing to drive module
Temperature, it is ensured that drive module can safely and effectively be run.
According to one embodiment of present invention, in addition to：First scheduling unit 410, for controlling the first throttle
Device is kept after the aperture of current aperture or the increase first throttle device, dispatches first detection unit 402 again
Detect that the current block temperature, first computing unit 404 obtain the averaging module temperature, first judgement again
Unit 406 judges the difference and the size of first preset value of the current block temperature and the averaging module temperature again
Relation, first control unit 408 control the aperture of the first throttle device again according to judged result.
The control device 400 of refrigeration system according to embodiments of the present invention, according to judged result to first throttle device
Aperture carry out after controlling accordingly, perform aforementioned operation again, property performance period cycle detection, judge and control, begin
Throttling arrangement is kept appropriate aperture eventually, the temperature of drive module is safely and effectively reduced to realize.
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, above-mentioned for controlling
Refrigeration system work any one of technical scheme, the control device 500 includes：Second detection unit 502, for examining
Survey passes through the current refrigerant temperature before the drive module；Second computing unit 504, for obtaining current environment dew point temperature
Degree；Second judging unit 506, for judging whether the current refrigerant temperature and the difference of the current environment dew-point temperature are big
In the second preset value；Second control unit 508, the aperture size for controlling the second throttling device according to judged result,
To avoid automatically controlled near the drive module condensation occur.
The control device 500 of refrigeration system according to embodiments of the present invention, by by the current refrigerant before drive module
Temperature is compared with current environment dew-point temperature, judges whether current refrigerant temperature and the difference of current environment dew-point temperature are big
In the second preset value, and when judging that current refrigerant temperature and the difference of current environment dew-point temperature are larger, then explanation outflow
The refrigerant of drive module can not cause under current refrigerant temperature near drive module it is automatically controlled there is condensation, keep second section
The current aperture of device is flowed, otherwise, control reduces the aperture of second throttling device, the refrigerant of module so that controlling stream is overdrived
Flow, it is to avoid the temperature of the refrigerant due to flowing through drive module it is too low and cause near drive module it is automatically controlled there is condensation,
To improve the stability and security of module operation, and then extend the service life of refrigeration system.
According to one embodiment of present invention, in addition to：Second scheduling unit 510, for controlling second throttling
Device is kept after current aperture or the aperture for reducing the second throttling device, dispatches second detection unit 502 again
Detect that the current refrigerant temperature, second computing unit 504 obtain the current environment dew-point temperature, described second again
Judging unit 506 judges that the current refrigerant temperature is preset with the difference of the current environment dew-point temperature and described second again
The magnitude relationship of value, second control unit 508 control the aperture of the second throttling device again according to judged result.
The control device 500 of refrigeration system according to embodiments of the present invention, according to judged result to second throttling device
Aperture carry out after controlling accordingly, perform aforementioned operation again, property performance period cycle detection, judge and control, begin
Throttling arrangement is kept appropriate aperture eventually, so that drive module and automatically controlled near it safely and steadily run, and then extend
The service life of refrigeration system.
The control device 500 of refrigeration system according to embodiments of the present invention, according to judged result to second throttling device
Aperture carry out after controlling accordingly, perform aforementioned operation again, property performance period cycle detection, judge and control, begin
Throttling arrangement is kept appropriate aperture eventually, so that drive 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 fig. 6, air conditioner 600 according to an embodiment of the invention, including：Any one of above-mentioned technical proposal
Described refrigeration system 602 (equivalent to the refrigeration system 1 of the embodiment shown in Fig. 1)；Any one of and above-mentioned technical proposal
The control device 604 (equivalent to the control device 400 of the refrigeration system of the embodiment shown in Fig. 4) and system of described refrigeration system
The control device 606 (equivalent to the control device 500 of the refrigeration system of the embodiment shown in Fig. 5) of cooling system, therefore, the air-conditioning
Device 600 has and the refrigeration system 602 any one of above-mentioned technical proposal, the control device 604 of refrigeration system and refrigeration
The identical technique effect of control device 606 of system, will not be repeated 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 fig. 7, the control method of refrigeration system according to another embodiment of the invention, is received out in compressor
(such as 5 minutes) first throttle device is in turning off standby state within the regular hour after machine instruction starts, in the regular hour
Afterwards (such as 5 minutes), the current block temperature of the drive module detected according to module temperature sensor (the first detection means)
Tf, gives first throttle device one initial opening, subsequently into step in detail below：
Step 702, the current block temperature Tf of drive module is detected in real time or periodically.
Step 704, by described within a predetermined period before the current block temperature detected and current time
The averaging module temperature of drive module is compared, and obtains both temperature difference △ T, judges whether △ T (judge current mould less than c
Whether deblocking temperature and the difference of averaging module temperature are less than the first preset value).For example, one time cycle f of setting, obtains the time
Module temperature is Tfa (averaging module temperature) in cycle f, and the drive module temperature Tf detected is put down with upper a cycle module
Equal temperature Tfa is compared, and is obtained both temperature difference for Δ T, is set a parameter c (the first preset value), judge whether Δ T-c is small
In 0, when judged result is to be, into step 706, otherwise into step 708.
Step 706, if it is decided that △ T are less than c, then first throttle device keep current aperture.
Step 708, if it is decided that △ T are no less than c, then increase the aperture of first throttle device, ensures safety effective
The temperature of low drive module.
702~step 708 of repeat step.
In the technical scheme, the aperture size of first throttle device is by the current block temperature Tf that detects and previous
Module mean temperature Tfa in the individual time cycle is controlled, with timely adjustment cold medium flux, in this way, realizing has safely and effectively
The temperature of the low drive module in ground.
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, pressure
Contracting machine receives start-up command startup (such as 5 minutes) second throttling device within the regular hour and is in turning off standby state, one
After the fixed time (such as 5 minutes), the current refrigerant temperature detected according to ice-forming processes outside pipes sensor (second detection device)
Tj is spent, gives second throttling device one initial opening, subsequently into step in detail below：
Step 802, current environment dew-point temperature Td is calculated according to the temperature and relative humidity meter of current environment, and detects cold
The current refrigerant temperature Tj of matchmaker.
Step 804, current refrigerant temperature and the difference △ T of current environment dew-point temperature are calculated, judges whether △ T are more than ginseng
Number d (the second preset value), when judged result is to be, into step 806, otherwise into step 808.
Step 806, if it is decided that △ T are more than parameter d, then second throttling device keeps current aperture, to prevent compressor
Near modules are automatically controlled to there is condensation, therefore, to assure that Δ T=Tj-Td is more than given parameters d.
Step 808, if it is decided that △ T are not more than parameter d, then reduce the aperture of second throttling device.
802~step 808 of repeat step.
In the technical scheme, second throttling device aperture size is by current refrigerant temperature Tj and current environment dew-point temperature
Td difference is adjusted, to prevent from automatically controlled near compressor module condensation occur, therefore, to assure that Δ T=Tj-Td is more than given
Parameter d, in this way, can effectively prevent after throttling refrigerant temperature it is too low cause it is automatically controlled near drive module there is condensation, realization
Drive module and automatically controlled long-term safety stable operation are ensured while drive module temperature is reduced, so as to lift user's body
Test.
Technical scheme is described in detail above in association with accompanying drawing, condensate liquid is carried out to refrigerant by outdoor heat exchanger
Change, making the temperature of refrigerant reduces, and detect the current block temperature of drive module to control first segment by the first detection means
The aperture size of device is flowed, so as to control refrigerant to drive module by controlling the refrigerant of low temperature to flow into the flow of drive module
The degree cooled,, can be with for example, when current block temperature is too high so as to ensure the safe and stable operation of drive module
Increase the aperture of first throttle device quickly and effectively to reduce the temperature of drive module, in addition, examining by second detection device
The current refrigerant temperature of refrigerant after calorimetric exchange, the aperture size of second throttling device is controlled according to current refrigerant temperature, with
The refrigerant after heat exchange is controlled to flow out the flow of drive module, it is to avoid to cause drive module attached because current refrigerant temperature is too low
There is condensation in closely automatically controlled, and then ensures the electricity near drive module and drive module while drive module temperature is reduced
Control long-term safety is stably run, and further extends the service life of refrigeration system.
In the present invention, term " first ", " second " are only used for the purpose described, and it is not intended that indicating or implying phase
To importance；Term " multiple " represents two or more；Term " connection " etc. all should be interpreted broadly, for example, it may be
It is fixedly connected or is detachably connected, or is integrally connected；Can be joined directly together, can also be by between intermediary
Connect connected.For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be
Concrete meaning.
In the description of this specification, the description of term " one embodiment " " specific embodiment " etc. means to combine the implementation
Example or specific features, structure, material or the feature of example description are contained at least one embodiment of the present invention or example.
In this specification, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the tool of description
Body characteristicses, structure, material or feature can in an appropriate manner be combined in any one or more embodiments or example.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (5)
1. a kind of control method of refrigeration system, it is characterised in that for controlling a kind of refrigeration system to work,
The refrigeration system, including：
Compressor, outdoor heat exchanger and indoor heat exchanger；
Drive module, for driving the compressor to be operated；
First throttle device, the first throttle device is connected between the outdoor heat exchanger and the drive module；
Second throttling device, the second throttling device is connected between the drive module and the indoor heat exchanger；
First detection means, is arranged on the position where the drive module, the current block for detecting the drive module
Temperature, to control the aperture size of the first throttle device；
Second detection device, is arranged between the first throttle device and the drive module, for detecting by described the
The current refrigerant temperature of the refrigerant of one throttling arrangement, to control the aperture size of the second throttling device；
The control method includes：
Step S1：Detect the current block temperature at the current time of the drive module；
Step S2：The averaging module temperature of the drive module within a predetermined period before obtaining the current time
Degree；
Step S3：Judge whether the difference of the current block temperature and the averaging module temperature is less than the first preset value, if
Judged result is yes, then controls the first throttle device to keep current aperture, otherwise, the control increase first throttle device
Aperture；
And/or
Step S11：Detection passes through the current refrigerant temperature before the drive module；
Step S21：Obtain current environment dew-point temperature；
Step S31：Judge whether the current refrigerant temperature and the difference of the current environment dew-point temperature are preset more than second
Value, if the determination result is YES, then controls the second throttling device to keep current aperture, and otherwise, control reduces the second section
Flow the aperture of device.
2. the control method of refrigeration system according to claim 1, it is characterised in that
After the aperture for controlling the first throttle device to keep current aperture or the increase first throttle device, also wrap
Include：The step S1, the step S2 and the step S3 are performed again；
And/or
After controlling the second throttling device to keep current aperture or the aperture for reducing the second throttling device, also wrap
Include：The step S11, the step S21 and the step S31 are performed again.
3. a kind of control device of refrigeration system, it is characterised in that for controlling refrigeration system work as claimed in claim 1
Make, the control device includes：
First detection unit, the current block temperature at the current time for detecting the drive module；
First computing unit, for the flat of the drive module within a predetermined period before obtaining the current time
Equal module temperature；
First judging unit, for judging whether the difference of the current block temperature and the averaging module temperature is less than first
Preset value；
First control unit, during for being in judged result, controls the first throttle device to keep current aperture, otherwise,
The aperture of the control increase first throttle device；
And/or
Second detection unit, the current refrigerant temperature before the drive module is passed through for detecting；
Second computing unit, for obtaining current environment dew-point temperature；
Second judging unit, for judging whether the current refrigerant temperature and the difference of the current environment dew-point temperature are more than
Second preset value；
Second control unit, during for being in judged result, controls the second throttling device to keep current aperture, otherwise,
Control reduces the aperture of the second throttling device.
4. the control device of refrigeration system according to claim 3, it is characterised in that also include：
First scheduling unit, for controlling the first throttle device to keep current aperture or increasing the first throttle device
Aperture after, dispatch first detection unit and detect the current block temperature, first computing unit again again
Obtain the averaging module temperature, first judging unit and judge the current block temperature and the averaging module temperature again
The difference of degree and the magnitude relationship of first preset value, first control unit are again according to judged result control described the
The aperture of one throttling arrangement；
And/or
Second scheduling unit, for controlling the second throttling device to keep current aperture or reducing the second throttling device
Aperture after, dispatch second detection unit and detect the current refrigerant temperature, second computing unit again again
Obtain the current environment dew-point temperature, second judging unit and judge that the current refrigerant temperature works as front ring with described again
The difference of border dew-point temperature and the magnitude relationship of second preset value, second control unit are again according to judged result control
Make the aperture of the second throttling device.
5. a kind of air conditioner, it is characterised in that including：
Refrigeration system as claimed in claim 1；And
The control device of refrigeration system as described in claim 3 or 4.
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| CN105937788B (en) * | 2016-06-01 | 2019-08-30 | 广东美的制冷设备有限公司 | Package AC plant and its control method |
| CN106196425A (en) * | 2016-06-29 | 2016-12-07 | 珠海格力电器股份有限公司 | A kind of power component dewing-proof method, Apparatus and system |
| CN106354182A (en) * | 2016-10-24 | 2017-01-25 | 美的集团武汉制冷设备有限公司 | Fan, fan control system, fan control method and intelligent robot cleaner |
| CN106440252B (en) * | 2016-11-08 | 2019-05-24 | 广东美的暖通设备有限公司 | A kind of air conditioner guard method, protection system and air conditioner |
| CN107062464A (en) * | 2017-01-06 | 2017-08-18 | 中山市爱美泰电器有限公司 | The heat abstractor and transducer air conditioning of a kind of power model |
| CN107152821A (en) * | 2017-06-05 | 2017-09-12 | 珠海格力电器股份有限公司 | Refrigerant radiating master control borad condensation-preventing device, method and air-conditioner set |
| CN107560007B (en) * | 2017-08-15 | 2021-07-30 | 广东美的暖通设备有限公司 | Air conditioning system and condensation prevention control method and device for refrigerant radiating pipe of air conditioning system |
| CN109028452B (en) * | 2018-06-20 | 2021-03-23 | 广东美的暖通设备有限公司 | Air conditioning system and refrigerant heat dissipation device and method thereof |
| CN109520088B (en) * | 2018-11-22 | 2020-12-01 | 广东美的制冷设备有限公司 | Cooling control method and device for refrigerating device, refrigerating device and storage medium |
| CN109945398B (en) * | 2019-03-29 | 2021-06-18 | 广东美的制冷设备有限公司 | Air conditioner and control method and control device thereof |
| CN110762748B (en) * | 2019-11-20 | 2021-04-27 | 重庆大学 | Control method and device for preventing condensation of air conditioner, air conditioner and readable storage medium |
| CN111237973B (en) * | 2020-01-19 | 2021-08-24 | 珠海格力电器股份有限公司 | Air conditioner heat dissipation control system and method and air conditioning equipment |
| CN111256205B (en) * | 2020-01-19 | 2021-08-24 | 珠海格力电器股份有限公司 | Air conditioner heat dissipation control system and method and air conditioning equipment |
| CN113666126B (en) * | 2021-08-25 | 2023-09-08 | 福建龙净环保股份有限公司 | Feeding system, feeding equipment conveying control method and conveying control system |
| CN114719469B (en) * | 2022-03-24 | 2024-05-17 | 浙江中广电器集团股份有限公司 | Electronic expansion valve opening self-adaptive adjusting method based on exhaust temperature control |
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| CN1257066C (en) * | 2003-06-26 | 2006-05-24 | 上海交通大学 | Defrosting device for saloon car air-condition evaporator |
| CN100381762C (en) * | 2004-07-26 | 2008-04-16 | 三洋电机株式会社 | Engine driven air conditioner and control method therefor |
| JP4859203B2 (en) * | 2006-01-25 | 2012-01-25 | 日立アプライアンス株式会社 | Refrigeration apparatus and operation control method thereof |
| JP5516602B2 (en) * | 2009-12-22 | 2014-06-11 | ダイキン工業株式会社 | Refrigeration equipment |
| US9453668B2 (en) * | 2010-10-18 | 2016-09-27 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus and refrigerant circulating method |
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