CN104279694A - Integrated air conditioner and refrigerant control energy-saving device and control method thereof - Google Patents
Integrated air conditioner and refrigerant control energy-saving device and control method thereof Download PDFInfo
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- CN104279694A CN104279694A CN201410121208.9A CN201410121208A CN104279694A CN 104279694 A CN104279694 A CN 104279694A CN 201410121208 A CN201410121208 A CN 201410121208A CN 104279694 A CN104279694 A CN 104279694A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 211
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000005457 ice water Substances 0.000 claims description 85
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 239000002826 coolant Substances 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000004907 flux Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000012385 regulation of binding Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- 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
- F25B41/31—Expansion 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
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an integrated air conditioner and refrigerant control energy-saving device and a control method thereof, which are used for controlling a water chilling unit. The integrated air conditioner and refrigerant control energy-saving device comprises a central processing unit, a volume control unit and a refrigerant control unit. The central processing unit calculates a suction gas superheat and an exhaust superheat, generates at least one control command according to at least one of the suction gas superheat and the exhaust superheat, and transmits the control command to the refrigerant control unit and the volume control unit; the refrigerant control unit controls the opening of an electronic expansion valve of the water chilling unit according to the control command; the volume control unit adjusts the volume of the water chilling unit according to the control command. The integrated air conditioner and refrigerant control energy-saving device and the control method thereof can achieve the goals of optimal control and CO2 emission reduction and energy saving.
Description
Technical field
The present invention about a kind of control device, particularly about a kind of integrated air conditioner and refrigerant control energy saver and control method thereof.
Background technology
Aircondition is for controlling the equipment of indoor temperature in the modern life, and such as, temperature for controlling in family, in office or factory building, particularly in large space, the control of aircondition all the more seems important.
For the ice water host computer of cold gas system, ice water host computer comprises a compressor, one condenser, one electronic expansion valve and an evaporimeter, its operation is roughly as follows: first, by compressor, refrigerant is compressed into high pressure-temperature gaseous coolant, then by condenser, refrigerant is cooled, it is made to become the liquid refrigerants of temperature in high pressure, then appropriate refrigerant is transferred into electronic expansion valve and reduces pressure as low-temp low-pressure liquid refrigerants, after low-temp low-pressure liquid refrigerants flows through evaporimeter, air themperature in absorption chamber, recycling a pressure fan blows to indoor, form cold air effect by this, when refrigerant becomes the gaseous coolant of low-pressure low-temperature, flow to the process that compressor compresses repeats above-mentioned heat absorption and heat release again.
In above-mentioned cold gas system, the pressurization of compressor primary responsibility refrigerant and conveying, refrigerant can be circulated, the high pressure-temperature gaseous coolant that compressor is carried mainly is cooled to liquid state by condenser, electronic expansion valve is mainly used in controlling the flow that liquid refrigerants enters evaporimeter, when load is larger, then aperture is larger, and liquid refrigerants is mainly flashed to gaseous coolant by the heat absorbing room air by evaporimeter.
But the existing air conditioning control device for above-mentioned compression, condensation, expansion and evaporation process does not accomplish overall control, more particularly, that a coolant control device is independently set, this coolant control device does not cooperatively interact with other control device and does the control of most power saving, is therefore difficult to the target reaching carbon reduction.
Therefore, need not do overall control to above-mentioned ice water host computer to propose a solution with the problem reaching carbon reduction.
Summary of the invention
One of the present invention object is to provide a kind of integrated air conditioner and refrigerant to control energy saver and control method thereof, and it can do overall control with the target reaching carbon reduction to ice water host computer.
For achieving the above object, energy saver is controlled for controlling an ice water host computer according to the integrated air conditioner of the present invention and refrigerant, this ice water host computer comprises an electronic expansion valve, a compressor, a condenser and an evaporimeter, this integrated air conditioner and refrigerant control energy saver and comprise: a CPU, and this CPU stores a refrigerant characteristic curve; One capacity regulating unit, is electrically coupled to this ice water host computer and this CPU; And a refrigerant control unit, be electrically coupled to this electronic expansion valve and this CPU of this ice water host computer.This CPU calculates a suction superheat and a discharge superheat, at least one control instruction is produced again according at least one of this suction superheat and this discharge superheat, and this at least one control instruction is sent to this refrigerant control unit and this capacity regulating unit, this refrigerant control unit controls the aperture of this electronic expansion valve of this ice water host computer according to this at least one control instruction, and this capacity regulating unit regulates the capacity of this ice water host computer according to this at least one control instruction.This suction superheat and this discharge superheat utilize following formulae discovery: suction superheat=suction end refrigerant temperature-evaporimeter refrigerant saturation temperature, discharge superheat=exhaust end refrigerant temperature-condenser refrigerant saturation temperature.Suction end refrigerant temperature is that this compressor suction side of this ice water host computer one of to record gaseous coolant temperature, evaporimeter refrigerant saturation temperature is that this CPU is according to this refrigerant characteristic curve, one of will to record the conversion of refrigerant saturation pressure in this evaporimeter and one of obtain refrigerant saturation temperature, exhaust end refrigerant temperature is that this compressor air-discharging end of this ice water host computer one of to record gaseous coolant temperature, condenser refrigerant saturation temperature is that this CPU is according to this refrigerant characteristic curve, one of will to record the conversion of refrigerant saturation pressure in this condenser and one of obtain refrigerant saturation temperature.
Control in energy saver at the integrated air conditioner of the present invention and refrigerant, comprise an output control unit further and be electrically coupled to this ice water host computer and this CPU, this output control unit controls the start and stop of this ice water host computer according to this at least one control instruction.
Control in energy saver at the integrated air conditioner of the present invention and refrigerant, comprise a temperature detecting unit further and be electrically coupled to this ice water host computer and this CPU, and one pressure detection unit be electrically coupled to this ice water host computer and this CPU, this temperature detecting unit is for detecting this suction end refrigerant temperature and this exhaust end refrigerant temperature and being sent to this CPU, and this pressure detection unit is for this refrigerant saturation pressure of this refrigerant saturation pressure and this condenser of detecting this evaporimeter.
Control in energy saver at the integrated air conditioner of the present invention and refrigerant, comprise an electric detecting unit further and be electrically coupled to this ice water host computer and this CPU, this electric detecting unit is for detecting one of this ice water host computer operation voltage and a revolution electric current and being sent to this CPU.
Control in energy saver at the integrated air conditioner of the present invention and refrigerant, comprise an input block further and be electrically coupled to this ice water host computer and this CPU, produce a warning escape signal when this ice water host computer breaks down escape and be sent to this input block, this warning escape signal is sent to this CPU by this input block again.
For achieving the above object, the control method of energy saver is controlled according to the integrated air conditioner of the present invention and refrigerant, for controlling an ice water host computer, this ice water host computer comprises an electronic expansion valve, one compressor, one condenser and an evaporimeter, this integrated air conditioner and refrigerant control energy saver and comprise a CPU, one capacity regulating unit, and a refrigerant control unit, this CPU stores a refrigerant characteristic curve, the control method that this integrated air conditioner and refrigerant control energy saver comprises: this CPU calculates a suction superheat and a discharge superheat, this CPU produces at least one control instruction according at least one of this suction superheat and this discharge superheat, this at least one control instruction is sent to this refrigerant control unit and this capacity regulating unit by this CPU, and this refrigerant control unit controls the aperture of this electronic expansion valve of this ice water host computer according to this at least one control instruction, and this capacity regulating unit regulates the capacity of this ice water host computer according to this at least one control instruction.This suction superheat and this discharge superheat utilize following formulae discovery: suction superheat=suction end refrigerant temperature-evaporimeter refrigerant saturation temperature, discharge superheat=exhaust end refrigerant temperature-condenser refrigerant saturation temperature.Suction end refrigerant temperature is that this compressor suction side of this ice water host computer one of to record gaseous coolant temperature, evaporimeter refrigerant saturation temperature is that this CPU is according to this refrigerant characteristic curve, one of will to record the conversion of refrigerant saturation pressure in this evaporimeter and one of obtain refrigerant saturation temperature, exhaust end refrigerant temperature is that this compressor air-discharging end of this ice water host computer one of to record gaseous coolant temperature, condenser refrigerant saturation temperature is that this CPU is according to this refrigerant characteristic curve, one of will to record the conversion of refrigerant saturation pressure in this condenser and one of obtain refrigerant saturation temperature.
Control in the control method of energy saver at the integrated air conditioner of the present invention and refrigerant, this integrated air conditioner and refrigerant control energy saver and comprise an output control unit further, and this output control unit controls the start and stop of this ice water host computer according to this at least one control instruction.
Control in the control method of energy saver at the integrated air conditioner of the present invention and refrigerant, this integrated air conditioner and refrigerant control energy saver and comprise a temperature detecting unit and a pressure detection unit further, comprised before the step that this CPU calculates this suction superheat and this discharge superheat: this temperature detecting unit is detected this suction end refrigerant temperature and this exhaust end refrigerant temperature and is sent to this CPU, this pressure detection unit is detected this refrigerant saturation pressure of this evaporimeter and this refrigerant saturation pressure of this condenser and is sent to this CPU.
Control in the control method of energy saver at the integrated air conditioner of the present invention and refrigerant, this integrated air conditioner and refrigerant control energy saver and comprise an electric detecting unit further, and the control method that this integrated air conditioner and refrigerant control energy saver comprises further: this electric detecting unit is detected one of this ice water host computer operation voltage and a revolution electric current and is sent to this CPU.
Control in the control method of energy saver at the integrated air conditioner of the present invention and refrigerant, this integrated air conditioner and refrigerant control energy saver and comprise an input block further, the control method that this integrated air conditioner and refrigerant control energy saver comprises further: produce a warning escape signal when this ice water host computer breaks down escape and be sent to this input block, and this warning escape signal is sent to this CPU by this input block again.
The integrated air conditioner of the present invention and refrigerant control energy saver and control method thereof by various control the control comprised performed by refrigerant control unit, capacity regulating unit and output control unit integrate, reach Optimization control by this; Moreover the present invention accurately can control the cold medium flux of electronic expansion valve of ice water host computer through refrigerant control unit and capacity needed for the control and regulation of binding capacity regulon, and then reaches the target of power saving and carbon reduction.
Accompanying drawing explanation
Fig. 1 illustrates and controls energy saver according to the integrated air conditioner of one embodiment of the invention and refrigerant.
Fig. 2 illustrates a refrigerant characteristic curve.
Fig. 3 illustrates the control method that the integrated air conditioner of Fig. 1 and refrigerant control energy saver.
Detailed description of the invention
The explanation of following embodiment is graphic with reference to what add, can in order to the specific embodiment implemented in order to illustrate the present invention.
Refer to Fig. 1, it illustrates and controls energy saver 1 according to the integrated air conditioner of one embodiment of the invention and refrigerant.
Integrated air conditioner and refrigerant control energy saver 1 for controlling an ice water host computer 3, and that is, integrated air conditioner and refrigerant control energy saver 1 and be electrically coupled to ice water host computer 3.
Ice water host computer 3 comprises compressor 30, condenser 32, electronic expansion valve 34 and an evaporimeter 36, and compressor 30, condenser 32, electronic expansion valve 34 and evaporimeter 36 are known by those skilled in the art, and this does not add to repeat.
The integrated air conditioner of the present invention and refrigerant control energy saver 1 and comprise a CPU (Central Processing Unit; CPU) 10, one temperature detecting unit 12, output control unit 14, input block 16, electric detecting unit 18, pressure detection unit 20 1 capacity regulating unit 22 and a refrigerant control unit 24.
Input block 16 is electrically coupled to ice water host computer 3 and CPU 10, and when ice water host computer 3 breaks down escape, can produce a warning escape signal and be sent to input block 16, this warning escape signal is sent to CPU 10 by input block 16 again.In an embodiment, input block 16 is for example and without limitation to digital input unit.
Electric detecting unit 18 is electrically coupled to ice water host computer 3, ammeter 5 and CPU 10, and electric detecting unit 18 is for detecting one of ice water host computer 3 operation voltage and a revolution electric current and being sent to CPU 10.In an embodiment, electric detecting unit 18 is for example and without limitation to analogue input unit.
Pressure detection unit 20 is electrically coupled to ice water host computer 3 and CPU 10, for detecting one of one of evaporimeter 36 refrigerant saturation pressure and condenser 32 refrigerant saturation pressure.
Temperature detecting unit 12 is electrically coupled to ice water host computer 3 and CPU 10, and for detecting, one of ice water host computer 3 frozen water enters coolant-temperature gage, a frozen water leaving water temperature, a cooling water enter one of coolant-temperature gage, a cooling water leaving water temperature, compressor 30 one of suction end refrigerant temperature and compressor 30 exhaust end refrigerant temperature and be sent to CPU 10.In an embodiment, temperature detecting unit 12 is for example and without limitation to thermistor.
Output control unit 14 is electrically coupled to ice water host computer 3 and CPU 10, CPU 10 according to temperature detecting unit 12, input block 16 and the electric various information that transmit of detecting unit 18, through output control unit 14 control ice water host computer 3 startup, stop and various operation.In an embodiment, output control unit 14 is for example and without limitation to digital output feature.
Capacity regulating unit 22 is electrically coupled to ice water host computer 3 and CPU 10, the various information that CPU 10 transmits according to temperature detecting unit 12, input block 16 and electric detecting unit 18, regulate the capacity of ice water host computer 3 through capacity regulating unit 22.
One of the present invention feature is to be integrated in integrated air conditioner and refrigerant controls in energy saver 1 by comprising output control unit 14, capacity regulating unit 22 and refrigerant control unit 24 to the various controls of ice water host computer 3, therefore can according to coming from temperature detecting unit 12, the various information of input block 16, electrically detecting unit 18 and pressure detection unit 20 do overall and optimized control, reach power saving and temperature controls object accurately.In prior art, output control unit 14, capacity regulating unit 22 and refrigerant control unit 24 is independent control out of the ordinary, there is no relevance each other, therefore cannot can reach entirety as the present invention and the control optimized, also cannot reach the target of power saving and carbon reduction.
Be noted that, CPU 10 can be made interlock entirety to refrigerant control unit 24 and capacity regulating unit 22 and control to regulate required capacity, when capacity regulating unit 22 needs to load, refrigerant control unit 24 can increase aperture simultaneously, so that the enough refrigerants of supply in real time, when capacity regulating unit 22 needs unloading, refrigerant control unit 24 can reduce aperture simultaneously, so that in real time decrement refrigerant supply, make ice water host computer 3 can do overall and optimized control.Above-mentioned loading and unloading is known by those skilled in the art, and this does not add to repeat.
In addition, the another feature of the present invention is that CPU 10 controls the cold medium flux (i.e. aperture) of the electronic expansion valve 34 of ice water host computer 3 through refrigerant control unit 24.Although to be noted that in Fig. 1 only with integrated air conditioner and refrigerant control energy saver 1 with ice water host computer 3 electric property coupling, but both intrawares can make electric property coupling accordingly according to the content of description.
Illustrate a refrigerant characteristic curve please refer to Fig. 1 and Fig. 2, Fig. 2, wherein X-axis is refrigerant saturation temperature, and Y-axis is refrigerant saturation pressure.
CPU 10 stores refrigerant characteristic curve as shown in Figure 2 and utilizes following formulae discovery to go out suction superheat and discharge superheat:
Suction superheat=suction end refrigerant temperature-evaporimeter refrigerant saturation temperature
Discharge superheat=exhaust end refrigerant temperature-condenser refrigerant saturation temperature
The gaseous coolant temperature (said temperature detecting unit 12 is detected) that compressor 30 suction side that suction end refrigerant temperature is this ice water host computer 3 records, evaporimeter refrigerant saturation temperature is the refrigerant characteristic curve of CPU 10 according to Fig. 2, refrigerant saturation temperature one of is changed and obtain to the refrigerant saturation pressure (above-mentioned pressure detection unit 20 detected) that will record in evaporimeter 36, the gaseous coolant temperature (said temperature detecting unit 12 is detected) that compressor 30 exhaust end that exhaust end refrigerant temperature is this ice water host computer 3 records, condenser refrigerant saturation temperature is the refrigerant characteristic curve of CPU 10 according to Fig. 2, refrigerant saturation temperature one of is changed and obtain to the refrigerant saturation pressure (above-mentioned pressure detection unit 20 detected) that will record in condenser 34.
Be noted that, suction superheat and discharge superheat can not equal zero, liquid refrigerants is in addition represented when suction superheat and discharge superheat equal zero, and liquid refrigerants does not have compressibility, compressor 30 can be damaged, therefore suction superheat and discharge superheat need to be an appropriate value (such as 3 DEG C to 5 DEG C), when suction superheat or discharge superheat are too low, CPU 10 produces at least one control instruction to refrigerant control unit 24, refrigerant control unit 24 controls the aperture of the electronic expansion valve 34 of ice water host computer 3 according to this at least one control instruction, electronic expansion valve 34 aperture is diminished, promote suction temperature by this, suction superheat or discharge superheat is made to rise to appropriate value.Above-mentioned CPU 10 can adoption rate-integral-derivative controller (Proportional-Integral-Derivative controller; PID controller) produce the control instruction of the best, make refrigerant control unit 24 control electronic expansion valve 34 aperture and can follow the trail of rapidly to suitable suction superheat and/or discharge superheat.
In addition, produced control instruction also can be sent to capacity regulating unit 22 and output control unit 14 by CPU 10, capacity regulating unit 22 regulates the capacity of ice water host computer 3 according to this control instruction, and output control unit 14 controls the start and stop of ice water host computer 3 according to this control instruction.The control of CPU 10 by making entirety to output control unit 14, capacity regulating unit 22 and refrigerant control unit 24 and optimize, reaches power saving and temperature controls object accurately.
Refer to Fig. 1 to Fig. 3, Fig. 3 illustrates the control method that the integrated air conditioner of Fig. 1 and refrigerant control energy saver.
In step S300, temperature detecting unit 12 is detected one of compressor 30 suction end refrigerant temperature and an exhaust end refrigerant temperature and is sent to CPU 10, and pressure detection unit 20 is detected one of one of evaporimeter 36 refrigerant saturation pressure and condenser 32 refrigerant saturation pressure and is sent to CPU 10.
In step S310, CPU 10 calculates a suction superheat and a discharge superheat according to the refrigerant saturation pressure of the refrigerant saturation pressure of suction end refrigerant temperature, evaporimeter 36, exhaust end refrigerant temperature and condenser 32.
In step S320, CPU 10 produces at least one control instruction according at least one of suction superheat and discharge superheat.
In step S330, this at least one control instruction is sent to refrigerant control unit 24 and capacity regulating unit 22 by CPU 10.
In step S340, refrigerant control unit 24 controls the aperture of the electronic expansion valve 34 of ice water host computer 3 according to this at least one control instruction, and capacity regulating unit 22 regulates the capacity of ice water host computer 3 according to this at least one control instruction.
In an embodiment, step S340 comprises output control unit 14 controls ice water host computer 3 start and stop according to this at least one control instruction further.
In step S350, electric detecting unit 18 is detected one of ice water host computer 3 operation voltage and a revolution electric current and is sent to CPU 10.
In step S360, produce a warning escape signal and be sent to input block 16 when ice water host computer 3 breaks down escape, warning escape signal is sent to CPU 10 by input block 16 again.
Be noted that the order of above-mentioned steps S350 and S360 is not limited to after step S340, the control method that can control energy saver at integrated air conditioner and refrigerant starts the random order after performing.
Be noted that, existing air conditioning control device does not do overall control to ice water host computer, and the integrated air conditioner of the present invention and refrigerant control energy saver 1 and control method (step S340) combines refrigerant control unit 24, capacity regulating unit 22 and output control unit 14, mat entirety controls the object reaching optimal control; Moreover the present invention accurately can control the cold medium flux of the electronic expansion valve 34 of ice water host computer 3 through refrigerant control unit 24 and binding capacity regulon 22 controls to adjust required capacity, and then reaches the target of power saving and carbon reduction.
In sum; although the present invention discloses as above with preferred embodiment; but above preferred embodiment is also not used to limit the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can do various change and retouching, the scope that therefore protection scope of the present invention defines with claim is as the criterion.
Claims (10)
1. an integrated air conditioner and refrigerant control energy saver, for controlling an ice water host computer, this ice water host computer comprises an electronic expansion valve, a compressor, a condenser and an evaporimeter, it is characterized in that, this integrated air conditioner and refrigerant control energy saver and comprise:
One CPU, this CPU stores a refrigerant characteristic curve;
One capacity regulating unit, is electrically coupled to this ice water host computer and this CPU; And
One refrigerant control unit, is electrically coupled to this electronic expansion valve and this CPU of this ice water host computer,
This CPU calculates a suction superheat and a discharge superheat, at least one control instruction is produced again according at least one of this suction superheat and this discharge superheat, and this at least one control instruction is sent to this refrigerant control unit and this capacity regulating unit, this refrigerant control unit controls the aperture of this electronic expansion valve of this ice water host computer according to this at least one control instruction, and this capacity regulating unit regulates the capacity of this ice water host computer according to this at least one control instruction, this suction superheat and this discharge superheat utilize following formulae discovery:
Suction superheat=suction end refrigerant temperature-evaporimeter refrigerant saturation temperature
Discharge superheat=exhaust end refrigerant temperature-condenser refrigerant saturation temperature
Suction end refrigerant temperature is that this compressor suction side of this ice water host computer one of to record gaseous coolant temperature, evaporimeter refrigerant saturation temperature is that this CPU is according to this refrigerant characteristic curve, one of will to record the conversion of refrigerant saturation pressure in this evaporimeter and one of obtain refrigerant saturation temperature, exhaust end refrigerant temperature is that this compressor air-discharging end of this ice water host computer one of to record gaseous coolant temperature, condenser refrigerant saturation temperature is that this CPU is according to this refrigerant characteristic curve, one of will to record the conversion of refrigerant saturation pressure in this condenser and one of obtain refrigerant saturation temperature.
2. integrated air conditioner according to claim 1 and refrigerant control energy saver, it is characterized in that, comprise an output control unit further and be electrically coupled to this ice water host computer and this CPU, this output control unit controls the start and stop of this ice water host computer according to this at least one control instruction.
3. integrated air conditioner according to claim 1 and refrigerant control energy saver, it is characterized in that, comprise a temperature detecting unit further and be electrically coupled to this ice water host computer and this CPU, and one pressure detection unit be electrically coupled to this ice water host computer and this CPU, this temperature detecting unit is for detecting this suction end refrigerant temperature and this exhaust end refrigerant temperature and being sent to this CPU, and this pressure detection unit is for this refrigerant saturation pressure of this refrigerant saturation pressure and this condenser of detecting this evaporimeter.
4. integrated air conditioner according to claim 1 and refrigerant control energy saver, it is characterized in that, comprise an electric detecting unit further and be electrically coupled to this ice water host computer and this CPU, this electric detecting unit is for detecting one of this ice water host computer operation voltage and a revolution electric current and being sent to this CPU.
5. integrated air conditioner according to claim 1 and refrigerant control energy saver, it is characterized in that, comprise an input block further and be electrically coupled to this ice water host computer and this CPU, produce a warning escape signal when this ice water host computer breaks down escape and be sent to this input block, this warning escape signal is sent to this CPU by this input block again.
6. an integrated air conditioner and refrigerant control the control method of energy saver, for controlling an ice water host computer, this ice water host computer comprises an electronic expansion valve, a compressor, a condenser and an evaporimeter, it is characterized in that, this integrated air conditioner and refrigerant control energy saver and comprise a CPU, a capacity regulating unit and a refrigerant control unit, this CPU stores a refrigerant characteristic curve, and the control method that this integrated air conditioner and refrigerant control energy saver comprises:
This CPU calculates a suction superheat and a discharge superheat;
This CPU produces at least one control instruction according at least one of this suction superheat and this discharge superheat;
This at least one control instruction is sent to this refrigerant control unit and this capacity regulating unit by this CPU; And
This refrigerant control unit controls the aperture of this electronic expansion valve of this ice water host computer according to this at least one control instruction, and this capacity regulating unit regulates the capacity of this ice water host computer according to this at least one control instruction,
This suction superheat and this discharge superheat utilize following formulae discovery:
Suction superheat=suction end refrigerant temperature-evaporimeter refrigerant saturation temperature
Discharge superheat=exhaust end refrigerant temperature-condenser refrigerant saturation temperature
Suction end refrigerant temperature is that this compressor suction side of this ice water host computer one of to record gaseous coolant temperature, evaporimeter refrigerant saturation temperature is that this CPU is according to this refrigerant characteristic curve, one of will to record the conversion of refrigerant saturation pressure in this evaporimeter and one of obtain refrigerant saturation temperature, exhaust end refrigerant temperature is that this compressor air-discharging end of this ice water host computer one of to record gaseous coolant temperature, condenser refrigerant saturation temperature is that this CPU is according to this refrigerant characteristic curve, one of will to record the conversion of refrigerant saturation pressure in this condenser and one of obtain refrigerant saturation temperature.
7. integrated air conditioner according to claim 6 and refrigerant control the control method of energy saver, it is characterized in that, this integrated air conditioner and refrigerant control energy saver and comprise an output control unit further, and this output control unit controls the start and stop of this ice water host computer according to this at least one control instruction.
8. integrated air conditioner according to claim 6 and refrigerant control the control method of energy saver, it is characterized in that, this integrated air conditioner and refrigerant control energy saver and comprise a temperature detecting unit and a pressure detection unit further, comprise before the step that this CPU calculates this suction superheat and this discharge superheat:
This temperature detecting unit is detected this suction end refrigerant temperature and this exhaust end refrigerant temperature and is sent to this CPU, and this pressure detection unit is detected this refrigerant saturation pressure of this evaporimeter and this refrigerant saturation pressure of this condenser and is sent to this CPU.
9. integrated air conditioner according to claim 6 and refrigerant control the control method of energy saver, it is characterized in that, this integrated air conditioner and refrigerant control energy saver and comprise an electric detecting unit further, and the control method that this integrated air conditioner and refrigerant control energy saver comprises further:
This electric detecting unit is detected one of this ice water host computer operation voltage and a revolution electric current and is sent to this CPU.
10. integrated air conditioner according to claim 6 and refrigerant control the control method of energy saver, it is characterized in that, this integrated air conditioner and refrigerant control energy saver and comprise an input block further, and the control method that this integrated air conditioner and refrigerant control energy saver comprises further:
Produce a warning escape signal when this ice water host computer breaks down escape and be sent to this input block, this warning escape signal is sent to this CPU by this input block again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410121208.9A CN104279694A (en) | 2013-07-11 | 2014-03-27 | Integrated air conditioner and refrigerant control energy-saving device and control method thereof |
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| CN201320410944 | 2013-07-11 | ||
| CN201320410944.7 | 2013-07-11 | ||
| CN201410121208.9A CN104279694A (en) | 2013-07-11 | 2014-03-27 | Integrated air conditioner and refrigerant control energy-saving device and control method thereof |
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| CN114234494A (en) * | 2021-12-24 | 2022-03-25 | 佛山市顺德区和而泰电子科技有限公司 | Electronic expansion valve control method of heat pump system |
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