CN106801954A - A kind of Gas-supplying enthalpy-increasing system and its control method, air-conditioner - Google Patents
A kind of Gas-supplying enthalpy-increasing system and its control method, air-conditioner Download PDFInfo
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- CN106801954A CN106801954A CN201710004881.8A CN201710004881A CN106801954A CN 106801954 A CN106801954 A CN 106801954A CN 201710004881 A CN201710004881 A CN 201710004881A CN 106801954 A CN106801954 A CN 106801954A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005273 aeration Methods 0.000 claims abstract description 105
- 230000009897 systematic effect Effects 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 24
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 5
- 230000001502 supplementing effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010726 refrigerant oil Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- 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
- F25B49/022—Compressor control arrangements
-
- 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)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Combustion & Propulsion (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The embodiment of the present invention provides a kind of Gas-supplying enthalpy-increasing system and its control method, air-conditioner, is related to refrigeration technology field, can respectively obtain different compressors rotating speed or the corresponding exiting exhaust gas upper limit of pressure value of entrance exhaust pressure value when aeration valve is opened or closed.The Gas-supplying enthalpy-increasing system includes：First pressure sensor, the exiting exhaust gas pressure value for detecting Gas-supplying enthalpy-increasing system；Second pressure sensor, the entrance pressure of inspiration(Pi) force value for detecting Gas-supplying enthalpy-increasing system；Control unit, for detecting the state of aeration valve and obtaining systematic parameter, and obtain exiting exhaust gas upper limit of pressure value corresponding with the state and systematic parameter of aeration valve, when exiting exhaust gas pressure value is more than exiting exhaust gas upper limit of pressure value, adjustment compressor rotary speed, so that exiting exhaust gas pressure value is less than or equal to exiting exhaust gas upper limit of pressure value；Wherein, the state of aeration valve includes open mode and closed mode, and systematic parameter is entrance pressure of inspiration(Pi) force value or compressor rotary speed.
Description
Technical field
The present invention relates to Refrigeration Engineering technical field, more particularly to a kind of Gas-supplying enthalpy-increasing system and its control method, air-conditioning
Device.
Background technology
Operationally, if the environment temperature of its work is relatively low, evaporating pressure is relatively low (can also to be claimed current Gas-supplying enthalpy-increasing system
It is entrance pressure of inspiration(Pi)), if condensing pressure (alternatively referred to as exiting exhaust gas pressure) is higher simultaneously, so may result in compressor
Compression ratio (exiting exhaust gas pressure/entrance pressure of inspiration(Pi)) it is excessive.Wherein, entrance pressure of inspiration(Pi) is low can cause the motor of compressor
Temperature is raised.In order to prevent the compression ratio of compressor too high, the compression ratio of meeting selectional restriction Gas-supplying enthalpy-increasing system, so as to avoid pressure
Compressor damage caused by contracting machine motor temperature is too high or compressor pressure is too high.Due to compressor entrance pressure of inspiration(Pi) not
Easily changing, thus generally can typically limit the exiting exhaust gas pressure of compressor reduces the compression ratio of compressor.
In the prior art, exiting exhaust gas pressure is either worth to according further to entrance pressure of inspiration(Pi) according to compressor rotary speed
Power restriction scope, due under aeration valve open mode and closed mode, the exiting exhaust gas pressure limits of compressor are
Identical, thus this allows for Gas-supplying enthalpy-increasing system it cannot be guaranteed that in aeration valve under open mode and closed mode, compressor
Can correspond to and export larger rotating speed, and then decline the ability of system；Meanwhile, cannot guarantee that all of operating ambient temperature
Under the conditions of, the exiting exhaust gas pressure limit of compressor is in rational scope, it is possible to cause that compressor operating pressure is exceeded to lead
Cause compressor damage.
The content of the invention
Embodiments of the invention provide a kind of Gas-supplying enthalpy-increasing system and its control method, air-conditioner, can be opened in aeration valve
Or when closing, different compressors rotating speed or the corresponding exiting exhaust gas upper limit of pressure value of entrance exhaust pressure value are obtained respectively.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
A kind of first aspect, there is provided Gas-supplying enthalpy-increasing system, including compressor, four-way valve, gas-liquid separator, tonifying Qi heat exchange
Device, aeration valve, also include：The first pressure sensor of the compressor outlet side is arranged on, the first pressure sensor is used
In the exiting exhaust gas pressure value Th_Pd of detection Gas-supplying enthalpy-increasing system；It is arranged on the second pressure sensing of the suction port of compressor side
Device, the second pressure sensor is used to detect the entrance pressure of inspiration(Pi) force value Th_Ps of Gas-supplying enthalpy-increasing system；Control unit, is used for
Detect the state of the aeration valve and obtain systematic parameter, and obtain corresponding with the state and the systematic parameter of the aeration valve
Exiting exhaust gas upper limit of pressure value, when the exiting exhaust gas pressure value Th_Pd be more than the exiting exhaust gas upper limit of pressure value
When, compressor rotary speed is adjusted, so that the exiting exhaust gas pressure value Th_Pd is less than or equal to the exiting exhaust gas upper limit of pressure
Value；Wherein, the state of the aeration valve includes open mode and closed mode, and the systematic parameter is entrance pressure of inspiration(Pi) force value
Th_Ps or compressor rotary speed N.
A kind of second aspect, there is provided air-conditioner, the air-conditioner includes above-mentioned Gas-supplying enthalpy-increasing system.
The third aspect, also provides a kind of control method of Gas-supplying enthalpy-increasing system, including：Detect the outlet of Gas-supplying enthalpy-increasing system
Exhaust pressure value Th_Pd and systematic parameter, the systematic parameter are entrance pressure of inspiration(Pi) force value Th_Ps or compressor rotary speed N；Detection
The state of aeration valve, the state of the aeration valve includes open mode and closed mode；Obtain with the state of the aeration valve and
The corresponding exiting exhaust gas upper limit of pressure value of the systematic parameter, when the exiting exhaust gas pressure value Th_Pd is more than the outlet
During the higher limit of pressure at expulsion, compressor rotary speed is adjusted, so that the exiting exhaust gas pressure value Th_Pd goes out less than or equal to described in
The higher limit of mouth pressure at expulsion.
The embodiment of the present invention provides a kind of Gas-supplying enthalpy-increasing system and its control method, air-conditioner, including first pressure sensing
Device, second pressure sensor and control unit, the Gas-supplying enthalpy-increasing system due to the embodiment of the present invention are obtaining exiting exhaust gas pressure
It is state and systematic parameter according to aeration valve corresponding with the state and systematic parameter of aeration valve to obtain during the higher limit of power
Exiting exhaust gas upper limit of pressure value, and when exiting exhaust gas pressure value Th_Pd is more than exiting exhaust gas upper limit of pressure value, adjustment pressure
Contracting machine rotating speed N, so that exiting exhaust gas pressure value Th_Pd is less than or equal to exiting exhaust gas upper limit of pressure value, thus may insure
Compressor under open mode and closed mode, can export larger rotating speed in aeration valve, improve Gas-supplying enthalpy-increasing system
Ability, and can prevent that the exiting exhaust gas pressure value Th_Pd of compressor is excessive to be caused compressor operating pressure exceeded and make compression
Machine is damaged.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
A kind of structural representation of Gas-supplying enthalpy-increasing system that Fig. 1 is provided for prior art；
Fig. 2 is a kind of structural representation of Gas-supplying enthalpy-increasing system provided in an embodiment of the present invention；
Fig. 3 is that a kind of control unit provided in an embodiment of the present invention obtains outlet row according to aeration valve state and systematic parameter
The schematic diagram of the higher limit of atmospheric pressure；
Fig. 4 is provided in an embodiment of the present invention a kind of under aeration valve open mode and closed mode, exiting exhaust gas pressure
The relation curve of value and entrance exhaust pressure value；
Fig. 5 is provided in an embodiment of the present invention a kind of under aeration valve open mode and closed mode, exiting exhaust gas pressure
The relation curve of value and compressor rotary speed；
Fig. 6 is a kind of schematic flow sheet of the control method of Gas-supplying enthalpy-increasing system provided in an embodiment of the present invention.
Reference：
1- compressors；2- four-way valves；3- indoor heat exchangers；4- choke valves；5- outdoor heat exchangers；6- gas-liquid separators；7-
Refrigerant storage device；8- tonifying Qi heat exchangers；The first passage of 81- tonifying Qi heat exchangers；Second heat exchange of 82- tonifying Qi heat exchangers is logical
Road；9- aeration valves；10- first pressure sensors；11- second pressure sensors.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The Gas-supplying enthalpy-increasing system of the embodiment of the present invention includes refrigerant circulation circuit and tonifying Qi loop.Gas-supplying enthalpy-increasing system be
Increase tonifying Qi loop in conventional refrigerant circulation circuit, refrigerating capacity is improved with refrigeration, reduce delivery temperature, carried when heating
High heating capacity.
As shown in figure 1, refrigerant circulation circuit include head and the tail connect successively compressor 1, four-way valve 2, indoor heat exchanger 3,
Choke valve 4, outdoor heat exchanger 5, four-way valve 2, gas-liquid separator 6.
Increase tonifying Qi loop in refrigerant circulation circuit, tonifying Qi loop include being connected to indoor heat exchanger 3 and choke valve 4 it
Between tonifying Qi heat exchanger 8 and the aeration valve 9 that is connected between tonifying Qi heat exchanger 8 and choke valve 4.Tonifying Qi heat exchanger 9 and compression
The gas supplementing opening of machine 1 is connected, for the tonifying Qi of compressor 1.
Wherein, tonifying Qi heat exchanger 8 can be connected in tonifying Qi loop, but is not limited to tonifying Qi heat exchanger 8, for example can be with
It is flash vessel, this is not defined, as long as when freezing or heating, tonifying Qi can be carried out to compressor 1.The present invention says
Bright book accompanying drawing 1 illustrates the connected mode of tonifying Qi heat exchanger, and the embodiment of the present invention with tonifying Qi by taking tonifying Qi heat exchanger 8 as an example
As a example by heat exchanger 8, the course of work of description tonifying Qi heat exchanger 8.
The flow process to refrigerant is described in detail below：
The flow process of refrigerant is during refrigeration：
Main refrigerant circuit flow process is：4 → the tonifying Qi of compressor 1 → four-way valve, 2 → outdoor heat exchanger, 5 → choke valve exchanges heat
First 6 → compressor of heat exchanger channels 81 → indoor heat exchanger, 3 → four-way valve, 2 → gas-liquid separator 2 of device 8；When tonifying Qi is carried out,
Aeration valve 9 is opened, and tonifying Qi loop refrigerant flow process is：Second heat exchange of choke valve 4 → aeration valve, 9 → tonifying Qi heat exchanger 8 is logical
The gas supplementing opening of 82 → compressor of road 1.During refrigeration tonifying Qi, gaseous coolant is directly entered the gas supplementing opening of compressor 1 by aeration valve 9,
Increase the capacity of compressor 1, liquid refrigerants turns into low-pressure liquid refrigerant, continues through the first passage 81 of tonifying Qi heat exchanger 8,
Get in heat exchanger 3 to freeze, the continuation compression of compressor 1 is entered after being evaporated to gaseous state.
The flow process of refrigerant is when heating：
Main refrigerant circuit flows：First heat exchange of compressor 1 → four-way valve, 2 → indoor heat exchanger, 3 → tonifying Qi heat exchanger 8
6 → compressor of passage 81 → choke valve, 4 → outdoor heat exchanger, 5 → four-way valve, 2 → gas-liquid separator 1；When tonifying Qi is carried out, tonifying Qi
Valve 9 is opened, and tonifying Qi loop refrigerant flow process is：First 81 → aeration valve of heat exchanger channels, 9 → tonifying Qi heat exchange of tonifying Qi heat exchanger 8
The gas supplementing opening of second 82 → compressor of heat exchanger channels 1 of device 8.When heating tonifying Qi, the high pressure gaseous refrigerant of the discharge of compressor 1
Heat exchanger 3 is got in by four-way valve 2, liquid is condensed into after being exchanged heat with room air, and flowed into tonifying Qi heat exchanger 8, mended
Refrigerant is carried out gas-liquid separation by gas heat exchanger 8, and gaseous coolant flows directly into the gas supplementing opening of compressor 1, increases the exhaust of compressor 1
Amount, liquid refrigerants enters compressor 1 after being evaporated to gaseous state into outdoor heat exchanger 5 continues to compress.
The embodiment of the present invention provides a kind of Gas-supplying enthalpy-increasing system, as shown in Fig. 2 being changed including compressor 1, four-way valve 2, interior
Outside hot device 3, choke valve 4, outdoor heat exchanger 5, gas-liquid separator 6, tonifying Qi heat exchanger 8 and aeration valve 9, also including being arranged on compression
The first pressure sensor 10 of the outlet side of machine 1, the second pressure sensor 11 and control unit that are arranged on the entrance side of compressor 1
(not illustrated in Fig. 2).
First pressure sensor 10 is used to detect exiting exhaust gas pressure value (i.e. high-pressure value) Th_ of Gas-supplying enthalpy-increasing system
Pd；Second pressure sensor 11 is used to detect entrance pressure of inspiration(Pi) force value (i.e. low pressure value) Th_Ps of Gas-supplying enthalpy-increasing system；Control
Unit processed, for detecting the state of aeration valve 9 and obtaining systematic parameter, and obtains the state and systematic parameter pair with aeration valve 9
The exiting exhaust gas upper limit of pressure value answered, when exiting exhaust gas pressure value Th_Pd is more than exiting exhaust gas upper limit of pressure value, adjustment
The rotating speed of compressor 1, so that exiting exhaust gas pressure value Th_Pd is less than or equal to exiting exhaust gas upper limit of pressure value；Wherein, aeration valve
9 state includes open mode and closed mode, and systematic parameter is entrance pressure of inspiration(Pi) force value Th_Ps or compressor rotary speed N.
It should be noted that first, refrigerant storage device 7 can also be connected between indoor heat exchanger 3 and choke valve 4.Its
In, refrigerant storage device 7 can be high-pressure reservoir, and the material of high-pressure reservoir can be stainless steel or copper etc., not do herein
It is specific to limit, as long as certain pressure and or dissolve each other effect corrosion-free to refrigerant and machine oil can be born.
Second, the type for choke valve 4 and aeration valve 9 is not defined, for example, can be electric expansion valve.
3rd, the specific set location for first pressure sensor 10, second pressure sensor 11 is not defined, the
One pressure sensor 10 can be arranged on the exit of compressor 1, it is also possible to be arranged on the neighbouring position in the exit of compressor 1, together
Reason second pressure sensor 11 can be arranged on the porch of compressor 1, it is also possible to be arranged on the neighbouring position of the porch of compressor 1
Put.
4th, the type for control unit is not defined, and the control unit in the embodiment of the present invention for example can be
MCU (Micro Control Unit, micro-control unit).
On this basis, for how to obtain exiting exhaust gas pressure corresponding with the state and systematic parameter of aeration valve 9
Higher limit is not defined, and can be prestored according in control unit after detecting the state of aeration valve 9 and obtaining systematic parameter
Calculation corresponding with the state of aeration valve 9 and systematic parameter be calculated exiting exhaust gas upper limit of pressure value.
5th, description of the invention accompanying drawing 3 illustrates control unit and is obtained according to the state and systematic parameter of aeration valve 9
The schematic diagram of corresponding exiting exhaust gas upper limit of pressure value.Wherein, systematic parameter is entrance pressure of inspiration(Pi) force value Th_Ps or compressor
Rotating speed N, can obtain in the open mode of aeration valve 9 or closing according to the state of aeration valve 9 and entrance pressure of inspiration(Pi) force value Th_Ps
Under state, exiting exhaust gas upper limit of pressure value；Can also be obtained in aeration valve according to the state of aeration valve 9 and compressor rotary speed N
9 open or close under state, exiting exhaust gas upper limit of pressure value.
On this basis, exiting exhaust gas upper limit of pressure value corresponding with the state and systematic parameter of aeration valve 9 is obtained, when
When exiting exhaust gas pressure value Th_Pd is more than exiting exhaust gas upper limit of pressure value, compressor rotary speed N is adjusted, so that exiting exhaust gas pressure
Force value Th_Pd is less than or less than or equal to exiting exhaust gas upper limit of pressure value；When exiting exhaust gas pressure value Th_Pd is less than exiting exhaust gas
During upper limit of pressure value, then without being operated to Gas-supplying enthalpy-increasing system, i.e., compressor rotary speed N need not be adjusted；Work as exiting exhaust gas
When pressure value Th_Pd is equal to exiting exhaust gas upper limit of pressure value, the rotating speed of compressor 1 can be adjusted, so that exiting exhaust gas pressure value
Th_Pd is less than or less than or equal to exiting exhaust gas upper limit of pressure value, naturally it is also possible to uncomfortable whole compressor rotary speed N.
The embodiment of the present invention provides a kind of Gas-supplying enthalpy-increasing system, including first pressure sensor 10, second pressure sensor
11 and control unit, because the Gas-supplying enthalpy-increasing system of the embodiment of the present invention is when exiting exhaust gas upper limit of pressure value is obtained, be
Exiting exhaust gas pressure corresponding with the state and systematic parameter of aeration valve 9 is obtained according to the state and systematic parameter of aeration valve 9
Higher limit, and exiting exhaust gas pressure value Th_Pd be more than exiting exhaust gas upper limit of pressure value when, adjust compressor rotary speed N, with
Make outlet exhaust pressure value Th_Pd less than or equal to exiting exhaust gas upper limit of pressure value, thus may insure compressor 1 in tonifying Qi
Valve 9 can export larger rotating speed under open mode and closed mode, improve the ability of Gas-supplying enthalpy-increasing system, and can be with
Prevent that the exiting exhaust gas pressure value Th_Pd of compressor 1 is excessive to be caused the operating pressure of compressor 1 exceeded and damage compressor 1.
Optionally, when systematic parameter is entrance pressure of inspiration(Pi) force value Th_Ps, control unit is according to entrance pressure of inspiration(Pi) force value
The state of Th_Ps and aeration valve 9 obtains exiting exhaust gas upper limit of pressure value, specific as shown in table 1.
Table 1
Reference table 1, when entrance pressure of inspiration(Pi) force value Th_Ps meets:P2≤Th_Ps ＜ P1, and during the closing of aeration valve 9, then obtain
The higher limit of conveying end pressure at expulsion is a × Th_Ps+b, and a, b are constant；And/or, when entrance pressure of inspiration(Pi) force value Th_Ps meets:
P2≤Th_Ps ＜ P1, and during the opening of aeration valve 9, then it is c × Th_Ps+d to obtain exiting exhaust gas upper limit of pressure value, and c, d are normal
Number；And/or, when entrance pressure of inspiration(Pi) force value Th_Ps meets:Th_Ps >=P1, then it is P3 to obtain exiting exhaust gas upper limit of pressure value.
Wherein, P1 is the maximum permissible value and the maximum permissible value of the compression ratio of compressor 1 of the exiting exhaust gas pressure of compressor 1
Ratio, when P2 is that compressor 1 normally runs, the minimum permissible value of entrance pressure of inspiration(Pi) when P3 is that compressor 1 normally runs, goes out
The maximum permissible value of mouth pressure at expulsion.
Herein, in the specific value or span and the Gas-supplying enthalpy-increasing system of each part and operation ring to(for) P1, P2, P3
The factors such as border are relevant.The embodiment of the present invention is to its specific value or span, and the specific value or span are obtained
Mode is taken not to be defined.
Example, if the cycle fluid (refrigerant) of Gas-supplying enthalpy-increasing system is R410A or the span of R32, P1 is：
0.2~1.4MPa；The span of P2 is：0.2~1.4MPa；The span of P3 is：0.5~4.7MPa.Further preferably
, P1 is 0.58MPa, and P2 is 0.17MPa, and P3 is 4.2Mpa.
It should be noted that when being run because P2 is that compressor 1 is normal, the minimum permissible value of entrance pressure of inspiration(Pi), thus
As entrance pressure of inspiration(Pi) force value Th_Ps≤P2, compressor 1 has been not normally functioning, therefore for now exiting exhaust gas pressure
Higher limit is not calculated.
Further, since P1 is maximum allowable with the compression ratio of compressor 1 for the maximum permissible value of the exiting exhaust gas pressure of compressor 1
The ratio of value, thus as Th_Ps >=P1, in the case of compressor 1 normally operation, no matter exiting exhaust gas pressure value Th_Pd
For how many, the compression ratio of compressor 1 in the range of the limitation of the compression ratio of compressor 1, therefore now aeration valve 9 in open mode
Or under closed mode, exiting exhaust gas upper pressure limit value is identical.
On this basis, for above-mentioned a, b, c, d value or the acquisition modes of span is not defined, the present invention
Embodiment provides a kind of specific acquisition modes.
In the case where the other parameters of Gas-supplying enthalpy-increasing system are constant, under the open mode of aeration valve 9 or closed mode,
In the range of the minimum permissible value and maximum permissible value of entrance pressure of inspiration(Pi), change entrance pressure of inspiration(Pi) force value Th_Ps (entrance pressures of inspiration(Pi)
Force value Th_Ps at least includes P1, P2, P3), and record the corresponding exiting exhaust gas pressure values of each entrance pressure of inspiration(Pi) force value Th_Ps
Th_Pd.Under the open mode of aeration valve 9 or closed mode, outlet exhaust pressure value Th_Pd and entrance pressure of inspiration(Pi) are made respectively
The relation curve of value Th_Ps.As shown in figure 4, curve A is represented when under the closed mode of aeration valve 9 in Fig. 4, exiting exhaust gas pressure value
The relation curve of Th_Pd and entrance pressure of inspiration(Pi) force value Th_Ps, curve B represents the open mode of aeration valve 9, exiting exhaust gas pressure value
The relation curve of Th_Pd and entrance pressure of inspiration(Pi) force value Th_Ps.In the range of P1~P2, the linear relationship of curve A can be obtained
Formula, the slope of curve A is c, and intercept is d；In the range of P1~P2, the linear relation of curve B can be obtained, curve B's is oblique
Rate is a, and intercept is b, just can so obtain one group of value of a, b, c, d.Change other parameters in any one, repeat it is above-mentioned
Process, obtains another group of value of a, b, c, d, and the value of a, b, c, d just can be obtained by the value for obtaining multigroup a, b, c, d
Scope.It should be noted that the value of a, b, c, d or span in order to ensure obtaining are accurate as much as possible, thus can be with
Exiting exhaust gas pressure value Th_Pd corresponding to entrance pressure of inspiration(Pi) force value Th_Ps should detect as much as possible.
Example, if the cycle fluid (refrigerant) of Gas-supplying enthalpy-increasing system is R410A or R32, now the span of a is
0.04≤a≤0.12, the span of b is 1.2≤b≤2.0, and the span of c is 0.05≤c≤0.15, the span of d
It is 1.5≤d≤2.0.
The embodiment of the present invention, according to entrance pressure of inspiration(Pi) force value Th_Ps, just can be accurately obtained aeration valve 9 in open mode
Or under closed mode, the corresponding exiting exhaust gas upper limit of pressure value of different entrance pressure of inspiration(Pi) force value Th_Ps.
Optionally, when systematic parameter is compressor rotary speed N, control unit is according to compressor rotary speed N and the shape of aeration valve 9
State obtains exiting exhaust gas upper limit of pressure value, specific as shown in table 2.
Table 2
Reference table 2, when compressor rotary speed N meets：N1≤N ＜ N2, and during the closing of aeration valve 9, then obtain exiting exhaust gas pressure
The higher limit of power is e × N+f, and e, f are constant；And/or, when compressor rotary speed N meets：N1≤N ＜ N2, and aeration valve 9 opens
When, then it is g × N+h to obtain exiting exhaust gas upper limit of pressure value, and g, h are constant；And/or, when compressor rotary speed N meets：N2≤N
During ＜ N3, and during the closing of aeration valve 9, then it is i × N+j to obtain exiting exhaust gas upper limit of pressure value, and i, j are constant；And/or, when
Compressor rotary speed N meets：During N2≤N ＜ N3, and during the opening of aeration valve 9, then it is q to obtain exiting exhaust gas upper limit of pressure value, and q is
Constant；And/or, when compressor rotary speed N meets：During N3≤N≤N4, then it is k × N+m to obtain exiting exhaust gas upper limit of pressure value,
K, m are constant.
Wherein, N1 is the minimum permissible value of compressor rotary speed, and N2 is (q-h)/g, and N3 is (q-m)/k, and N4 turns for compressor
The maximum permissible value of speed.
It should be noted that because N1 is the minimum permissible value of compressor rotary speed, N4 is maximum allowable for compressor rotary speed
Value, thus as compressor rotary speed N ＜ N1 or compressor rotary speed N ＞ N4, compressor 1 has been not normally functioning, therefore for this
When exiting exhaust gas upper limit of pressure value be not analyzed.
Herein, each part and fortune in the specific value or span and Gas-supplying enthalpy-increasing system for N1, N2, N3, N4
The factors such as row environment are relevant.The embodiment of the present invention is to its specific value or span, and the specific value or span
Acquisition modes be not defined.For most of Gas-supplying enthalpy-increasing system such as air-conditioning systems of the prior art, preferably
, N1 is 15rps, and N2 is 30rps, and N3 is 90rps, and N4 is 120rps.
On this basis, for above-mentioned e, f, g, h, i, j, q, k, m value or the acquisition modes of span is not carried out
Limit, the embodiment of the present invention provides a kind of specific acquisition modes.
In the case where the other parameters of Gas-supplying enthalpy-increasing system are constant, under the open mode of aeration valve 9 or closed mode,
In the range of compressor rotary speed N maximum permissible values and minimum permissible value, (compressor rotary speed N at least includes to change compressor rotary speed N
N1, N4), and detect the corresponding exiting exhaust gas pressure value Th_Pd of each compressor rotary speed N.In the open mode of aeration valve 9 or closing
Under state, the relation curve of outlet exhaust pressure value Th_Pd and compressor rotary speed N is made respectively.As shown in figure 5, curve in Fig. 5
C is represented under aeration valve open mode, the relation curve of exiting exhaust gas pressure value Th_Pd and compressor rotary speed N, and curve D is represented and mended
Under air valve closed mode, the relation curve of exiting exhaust gas pressure value Th_Pd and compressor rotary speed N.For curve C, in N1~N2
In the range of, C1 sections in curve of linear relation can be obtained, now C1 sections of slope is g, and intercept is h, in N2~N3 scopes
It is interior, C2 sections in curve of linear relation can be obtained, because C2 sections is the line parallel with transverse axis in Fig. 5, C2 sections with the longitudinal axis
Intersection point is q, in the range of N3~N4, obtains C3 sections in curve of linear relation, and now C3 sections of slope is k, and intercept is
m.For curve D, in the range of N1~N2, D1 sections in curve of linear relation can be obtained, now the slope at D1 ends is e,
Intercept is f, in the range of N2~N3, can obtain D2 sections in curve of linear relation, and now D2 sections of slope is i, intercept
It is j, in the range of N3~N4, obtains D3 sections in curve of linear relation, now D3 sections of slope is k, and intercept is m.Due to
C3 sections overlaps with D3 sections, thus can obtain k, m according to C3 sections, it is also possible to obtain k, m according to D3 sections.Based on above-mentioned, just can be with
One group of value of e, f, g, h, i, j, q, k, m is obtained, any one in change other parameters repeats said process, obtains another
Group e, f, g, h, i, j, q, k, m value, by the value for obtaining multigroup e, f, g, h, i, j, q, k, m just can obtain e, f, g,
The span of h, i, j, q, k, m.It should be noted that in order to ensure the value of e, f, g, h, i, j, q, k, m for obtaining or taking
Value scope is accurate as much as possible, thus can as much as possible to the corresponding exiting exhaust gas pressure values of different compressors rotating speed N
Th_Pd is detected.
Example, if the cycle fluid (refrigerant) of Gas-supplying enthalpy-increasing system is R410A or R32, now the span of e is
0.04≤e≤0.12, the span of f is 1.2≤f≤2.0, and the span of g is 0.05≤g≤0.15, the span of h
It is 1.5≤h≤2, the span of i is 0.05≤i≤0.12, and the span of j is 3.5≤j≤4.2, the span of k
For the span of -0.05≤k≤- 0.03, m is 0.04≤m≤0.12, the span of q is 4.15≤q≤4.7.
The embodiment of the present invention, according to compressor rotary speed N, just can be accurately obtained in the open mode of aeration valve 9 or close shape
Under state, the corresponding exiting exhaust gas upper limit of pressure values of different compressors rotating speed N.
In the above-described embodiments, Gas-supplying enthalpy-increasing system can apply to refrigerator, it is also possible to be applied to air-conditioning, can also apply
In the refrigeration such as refrigerator and/or heating equipment, it is not specifically limited herein.
Based on above-mentioned Gas-supplying enthalpy-increasing system, the embodiment of the present invention provides a kind of air-conditioner, and the air-conditioner includes above-mentioned
Gas-supplying enthalpy-increasing system.
The embodiment of the present invention provides a kind of air-conditioner, including first pressure sensor 10, second pressure sensor 11 and
Control unit, because the Gas-supplying enthalpy-increasing system in embodiment of the present invention air-conditioner is when exiting exhaust gas upper limit of pressure value is obtained,
Being state and systematic parameter according to aeration valve 9 obtains exiting exhaust gas pressure corresponding with the state and systematic parameter of aeration valve 9
The higher limit of power, and when exiting exhaust gas pressure value Th_Pd is more than exiting exhaust gas upper limit of pressure value, compressor rotary speed is adjusted,
So that exiting exhaust gas pressure value Th_Pd is less than or equal to exiting exhaust gas upper limit of pressure value, thus may insure that compressor 1 is being mended
Air valve 9 can export larger rotating speed under open mode and closed mode, improve the ability of Gas-supplying enthalpy-increasing system, and can
To prevent, the exiting exhaust gas pressure value Th_Pd of compressor 1 is excessive to be caused the operating pressure of compressor 1 exceeded and damages compressor 1.
The embodiment of the present invention also provides a kind of control method of Gas-supplying enthalpy-increasing system, as shown in fig. 6, including：
S100, the exiting exhaust gas pressure value Th_Pd of detection Gas-supplying enthalpy-increasing system and systematic parameter, systematic parameter are inhaled for entrance
Air pressure force value Th_Ps or compressor rotary speed N.
Wherein it is possible to exiting exhaust gas pressure value Th_Pd is detected using first pressure sensor, using second pressure
Sensor is detected to entrance pressure of inspiration(Pi) force value Th_Ps.During adjustment compressor rotary speed N, in Gas-supplying enthalpy-increasing system
Just the compressor rotary speed N after being adjusted with respective stored.
The state of S101, detection aeration valve 9, the state of aeration valve 9 includes open mode and closed mode.
Herein, it is possible to use MCU detects the state of aeration valve 9.
S102, acquisition exiting exhaust gas upper limit of pressure value corresponding with the state and systematic parameter of aeration valve 9, when outlet is arranged
When air pressure force value Th_Pd is more than exiting exhaust gas upper limit of pressure value, compressor rotary speed N is adjusted, so that exiting exhaust gas pressure value Th_
Pd is less than or equal to exiting exhaust gas upper limit of pressure value.
Herein, can be obtained in the open mode of aeration valve 9 according to the state of aeration valve 9 and entrance pressure of inspiration(Pi) force value Th_Ps
Or under closing, exiting exhaust gas upper limit of pressure value；Can also be obtained in tonifying Qi according to the state of aeration valve 9 and compressor rotary speed N
Under the open mode of valve 9 or closed mode, exiting exhaust gas upper limit of pressure value.
Wherein, exiting exhaust gas upper limit of pressure value corresponding with the state and systematic parameter of aeration valve 9 is obtained, when outlet is arranged
When air pressure force value Th_Pd is more than exiting exhaust gas upper limit of pressure value, the rotating speed of compressor 1 is adjusted, so that exiting exhaust gas pressure value Th_
Pd is less than or less than or equal to exiting exhaust gas upper limit of pressure value；When exiting exhaust gas pressure value Th_Pd is less than exiting exhaust gas pressure
During higher limit, then without being operated to Gas-supplying enthalpy-increasing system, i.e., the rotating speed of compressor 1 need not be adjusted；When exiting exhaust gas pressure value
When Th_Pd is equal to exiting exhaust gas upper limit of pressure value, the rotating speed of compressor 1 can be adjusted, so that exiting exhaust gas pressure value Th_Pd is small
In or less than or equal to exiting exhaust gas upper limit of pressure value, it is also possible to the uncomfortable rotating speed of whole compressor 1.
The embodiment of the present invention provides a kind of control method of Gas-supplying enthalpy-increasing system, because the embodiment of the present invention is according to aeration valve
9 state and systematic parameter obtain exiting exhaust gas upper limit of pressure value corresponding with the state and systematic parameter of aeration valve 9, and
When exiting exhaust gas pressure value Th_Pd is more than exiting exhaust gas upper limit of pressure value, compressor rotary speed is adjusted, so that exiting exhaust gas pressure
Force value Th_Pd is less than or equal to exiting exhaust gas upper limit of pressure value, thus may insure compressor 1 in aeration valve 9 in open shape
Under state and closed mode, larger rotating speed can be exported, improve the ability of Gas-supplying enthalpy-increasing system, and compressor 1 can be prevented
Exiting exhaust gas pressure value Th_Pd excessive cause the operating pressure of compressor 1 exceeded and damage compressor 1.
In order to obtain exiting exhaust gas upper limit of pressure value corresponding with the state and systematic parameter of aeration valve 9, the present invention is real
Applying example can include following two concrete implementation modes：
Mode one
When systematic parameter is entrance pressure of inspiration(Pi) force value Th_Ps, when entrance pressure of inspiration(Pi) force value Th_Ps meets:P2≤Th_Ps
＜ P1, and during the closing of aeration valve 9, then it is a × Th_Ps+b to obtain exiting exhaust gas upper limit of pressure value, and a, b are constant；And/or,
When entrance pressure of inspiration(Pi) force value Th_Ps meets:P2≤Th_Ps ＜ P1, and during the opening of aeration valve 9, then obtain 9 exiting exhaust gas pressure
Higher limit is c × Th_Ps+d, and c, d are constant；Wherein, P1 is the maximum permissible value and compressor of the exiting exhaust gas pressure of compressor 1
The ratio of the maximum permissible value of compression ratio, P2 for compressor normally run when, the minimum permissible value of entrance pressure of inspiration(Pi).
Wherein, each part and running environment in the specific value or span and Gas-supplying enthalpy-increasing system for P1, P2
It is relevant etc. factor.The embodiment of the present invention to its specific value or span, and the specific value or span acquisition
Mode is not defined.
Herein, for a, b, c, d value or the acquisition modes of span is not defined.For example, can with it is above-mentioned
The mode for obtaining a, b, c, d is identical, and here is omitted.
Example, if the cycle fluid (refrigerant) of Gas-supplying enthalpy-increasing system is R410A or R32, now the span of a is
0.04≤a≤0.12, the span of b is 1.2≤b≤2.0, and the span of c is 0.05≤c≤0.15, the span of d
It is 1.5≤d≤2.0.
Further, exiting exhaust gas upper limit of pressure value corresponding with the state and systematic parameter of aeration valve 9 is obtained, is also wrapped
Include：When entrance pressure of inspiration(Pi) force value Th_Ps meets:Th_Ps >=P1, then it is P3 to obtain exiting exhaust gas upper limit of pressure value；Wherein, P3
When normally being run for compressor, the maximum permissible value of exiting exhaust gas pressure.
Wherein, each part and running environment in the specific value or span for P3 and Gas-supplying enthalpy-increasing system etc. because
Have pass.The embodiment of the present invention to its specific value or span, and the specific value or span acquisition modes
It is not defined.
The embodiment of the present invention, according to entrance pressure of inspiration(Pi) force value Th_Ps, just can be accurately obtained aeration valve 9 in open mode
Or under closed mode, the corresponding exiting exhaust gas upper limit of pressure value of different entrance pressure of inspiration(Pi) force value Th_Ps.
Preferably, if the cycle fluid of Gas-supplying enthalpy-increasing system is R410A or the span of R32, P1 is：0.2~
1.4MPa；The span of P2 is：0.2~1.4MPa；The span of P3 is：0.5~4.7MPa.
Wherein, for existing most of air-conditioning systems, it is further preferred that P1 is 0.58MPa, P2 is
0.17MPa, P3 are 4.2Mpa.
Mode two
When systematic parameter is compressor rotary speed N, when compressor rotary speed N meets：N1≤N ＜ N2, and aeration valve 9 closes
When, then it is e × N+f to obtain exiting exhaust gas upper limit of pressure value, and e, f are constant；And/or, when compressor rotary speed N meets：N1≤N
＜ N2, and during the opening of aeration valve 9, then it is g × N+h to obtain exiting exhaust gas upper limit of pressure value, and g, h are constant；And/or, work as pressure
Contracting machine rotating speed N meets：During N2≤N ＜ N3, and during the closing of aeration valve 9, then 9 exiting exhaust gas upper limit of pressure values are obtained for i × N+
J, i, j are constant；And/or, when compressor rotary speed N meets：During N2≤N ＜ N3, and during the opening of aeration valve 9, then outlet row is obtained
The higher limit of atmospheric pressure is q, and q is constant；Wherein, N1 is the minimum permissible value of compressor rotary speed, and N2 is (q-h)/g, and N3 is (q-
M)/k, k, m are constant.
Wherein, N1 is the minimum permissible value of compressor rotary speed, therefore as N ＜ N1, compressor can not carry out normal work,
Therefore it is not analyzed for now exiting exhaust gas upper limit of pressure value.
Further, exiting exhaust gas upper limit of pressure value corresponding with the state and systematic parameter of aeration valve 9 is obtained, is also wrapped
Include：When compressor rotary speed N meets：During N3≤N≤N4, then it is k × N+m to obtain exiting exhaust gas upper limit of pressure value；Wherein, N4 is
The maximum permissible value of compressor rotary speed.
Herein, for e, f, g, h, i, j, q, k, m value or the acquisition modes of span is not defined.For example,
Can be identical with the mode of above-mentioned acquisition e, f, g, h, i, j, q, k, m, here is omitted.
Example, if the cycle fluid (refrigerant) of Gas-supplying enthalpy-increasing system is R410A or R32, now the span of e is
0.04≤e≤0.12, the span of f is 1.2≤f≤2.0, and the span of g is 0.05≤g≤0.15, the span of h
It is 1.5≤h≤2, the span of i is 0.05≤i≤0.12, and the span of j is 3.5≤j≤4.2, the span of k
For the span of -0.05≤k≤- 0.03, m is 0.04≤m≤0.12, the span of q is 4.15≤q≤4.7.
Additionally, each part and fortune in specific value or span and Gas-supplying enthalpy-increasing system for N1, N2, N3, N4
The factors such as row environment are relevant.The embodiment of the present invention is to its specific value or span, and the specific value or span
Acquisition modes be not defined.For most of air-conditioning systems of the prior art, it is preferred that N1 is 15rps, N2 is
30rps, N3 are 90rps, and N4 is 120rps.
Wherein, because N4 is the maximum permissible value of compressor rotary speed, therefore as N ＞ N4, now compressor 1 can not be carried out
Normal work, therefore be not analyzed for now exiting exhaust gas upper limit of pressure value.
The embodiment of the present invention, according to compressor rotary speed N, just can be accurately obtained in the open mode of aeration valve 9 or close shape
Under state, the corresponding exiting exhaust gas upper limit of pressure values of different compressors rotating speed N.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of Gas-supplying enthalpy-increasing system, including compressor, four-way valve, gas-liquid separator, tonifying Qi heat exchanger, aeration valve, its feature
It is also to include：
The first pressure sensor of the compressor outlet side is arranged on, the first pressure sensor is used to detect Gas-supplying enthalpy-increasing
The exiting exhaust gas pressure value Th_Pd of system；
The second pressure sensor of the suction port of compressor side is arranged on, the second pressure sensor is used to detect Gas-supplying enthalpy-increasing
The entrance pressure of inspiration(Pi) force value Th_Ps of system；
Control unit, for detecting the state of the aeration valve and obtaining systematic parameter, and obtains the state with the aeration valve
Exiting exhaust gas upper limit of pressure value corresponding with the systematic parameter, when the exiting exhaust gas pressure value Th_Pd goes out more than described in
During the higher limit of mouth pressure at expulsion, compressor rotary speed is adjusted, so that the exiting exhaust gas pressure value Th_Pd is less than or equal to described
Exiting exhaust gas upper limit of pressure value；Wherein, the state of the aeration valve includes open mode and closed mode, the systematic parameter
It is entrance pressure of inspiration(Pi) force value Th_Ps or compressor rotary speed N.
2. Gas-supplying enthalpy-increasing system according to claim 1, it is characterised in that in the systematic parameter be entrance pressure of inspiration(Pi)
During value Th_Ps, described control unit specifically for
When the entrance pressure of inspiration(Pi) force value Th_Ps meets:P2≤Th_Ps ＜ P1, and during aeration valve closing, then obtain described
Exiting exhaust gas upper limit of pressure value is a × Th_Ps+b, and a, b are constant；
And/or,
When the entrance pressure of inspiration(Pi) force value Th_Ps meets:P2≤Th_Ps ＜ P1, and during aeration valve opening, then obtain described
Exiting exhaust gas upper limit of pressure value is c × Th_Ps+d, and c, d are constant；
And/or,
When the entrance pressure of inspiration(Pi) force value Th_Ps meets:Th_Ps >=P1, then it is P3 to obtain exiting exhaust gas upper limit of pressure value；
Wherein, P1 is the ratio of the maximum permissible value of the maximum permissible value and compressor pressure ratios of compressor outlet pressure at expulsion,
P2 for compressor normally run when, the minimum permissible value of entrance pressure of inspiration(Pi), P3 for compressor normally run when, exiting exhaust gas pressure
The maximum permissible value of power.
3. Gas-supplying enthalpy-increasing system according to claim 1, it is characterised in that in the systematic parameter be compressor rotary speed N
When, described control unit specifically for
When the compressor rotary speed N meets：N1≤N ＜ N2, and during aeration valve closing, then obtain the exiting exhaust gas pressure
Higher limit be e × N+f, e, f be constant；And/or, when the compressor rotary speed N meets：N1≤N ＜ N2, and the aeration valve
During opening, then the exiting exhaust gas upper limit of pressure value is obtained for g × N+h, g, h are constant；
And/or,
When the compressor rotary speed N meets：During N2≤N ＜ N3, and during aeration valve closing, then obtain the exiting exhaust gas pressure
The higher limit of power is i × N+j, and i, j are constant；And/or, when the compressor rotary speed N meets：During N2≤N ＜ N3, and the benefit
When air valve is opened, then the exiting exhaust gas upper limit of pressure value is obtained for q, q is constant；
And/or,
When the compressor rotary speed N meets：During N3≤N≤N4, then the exiting exhaust gas upper limit of pressure value is obtained for k × N+m,
K, m are constant；
Wherein, N1 is the minimum permissible value of compressor rotary speed, and N2 is (q-h)/g, and N3 is (q-m)/k, and N4 is compressor rotary speed
Maximum permissible value.
4. a kind of air-conditioner, it is characterised in that including the Gas-supplying enthalpy-increasing system described in claim any one of 1-3.
5. a kind of control method of Gas-supplying enthalpy-increasing system, it is characterised in that including：
The exiting exhaust gas pressure value Th_Pd and systematic parameter of Gas-supplying enthalpy-increasing system are detected, the systematic parameter is entrance pressure of inspiration(Pi)
Force value Th_Ps or compressor rotary speed N；
The state of aeration valve is detected, the state of the aeration valve includes open mode and closed mode；
Exiting exhaust gas upper limit of pressure value corresponding with the state and the systematic parameter of the aeration valve is obtained, when the outlet
When exhaust pressure value Th_Pd is more than the exiting exhaust gas upper limit of pressure value, compressor rotary speed is adjusted, so that the exiting exhaust gas
Pressure value Th_Pd is less than or equal to the exiting exhaust gas upper limit of pressure value.
6. control method according to claim 5, it is characterised in that in the systematic parameter be entrance pressure of inspiration(Pi) force value
During Th_Ps, acquisition exiting exhaust gas upper limit of pressure value corresponding with the state and the systematic parameter of the aeration valve, tool
Body includes：
When the entrance pressure of inspiration(Pi) force value Th_Ps meets:P2≤Th_Ps ＜ P1, and during aeration valve closing, then obtain described
Exiting exhaust gas upper limit of pressure value is a × Th_Ps+b, and a, b are constant；
And/or,
When the entrance pressure of inspiration(Pi) force value Th_Ps meets:P2≤Th_Ps ＜ P1, and during aeration valve opening, then obtain described
Exiting exhaust gas upper limit of pressure value is c × Th_Ps+d, and c, d are constant；
Wherein, P1 is the ratio of the maximum permissible value of the maximum permissible value and compressor pressure ratios of compressor outlet pressure at expulsion,
P2 for compressor normally run when, the minimum permissible value of entrance pressure of inspiration(Pi).
7. control method according to claim 6, it is characterised in that the state of the acquisition and the aeration valve and described
The corresponding exiting exhaust gas upper limit of pressure value of systematic parameter, also includes：
When the entrance pressure of inspiration(Pi) force value Th_Ps meets:Th_Ps >=P1, then it is P3 to obtain exiting exhaust gas upper limit of pressure value；
Wherein, P3 for compressor normally run when, the maximum permissible value of exiting exhaust gas pressure.
8. control method according to claim 7, it is characterised in that if the cycle fluid of the Gas-supplying enthalpy-increasing system is
The span of R410A or R32, P1 is：0.2~1.4MPa；The span of P2 is：0.2~1.4MPa；The value model of P3
Enclose for：0.5~4.7MPa.
9. control method according to claim 5, it is characterised in that when the systematic parameter is compressor rotary speed N, institute
Acquisition exiting exhaust gas upper limit of pressure value corresponding with the state and the systematic parameter of the aeration valve is stated, is specifically included：
When the compressor rotary speed N meets：N1≤N ＜ N2, and during aeration valve closing, then obtain the exiting exhaust gas pressure
Higher limit be e × N+f, e, f be constant；And/or, when the compressor rotary speed N meets：N1≤N ＜ N2, and the aeration valve
During opening, then the exiting exhaust gas upper limit of pressure value is obtained for g × N+h, g, h are constant；
And/or,
When the compressor rotary speed N meets：During N2≤N ＜ N3, and during aeration valve closing, then obtain the exiting exhaust gas pressure
The higher limit of power is i × N+j, and i, j are constant；And/or, when the compressor rotary speed N meets：During N2≤N ＜ N3, and the benefit
When air valve is opened, then the exiting exhaust gas upper limit of pressure value is obtained for q, q is constant；
Wherein, N1 is the minimum permissible value of compressor rotary speed, and N2 is (q-h)/g, and N3 is (q-m)/k, and k, m are constant.
10. control method according to claim 9, it is characterised in that state of the acquisition with the aeration valve and institute
The corresponding exiting exhaust gas upper limit of pressure value of systematic parameter is stated, is also included：
When the compressor rotary speed N meets：During N3≤N≤N4, then the exiting exhaust gas upper limit of pressure value is obtained for k × N+m；
Wherein, N4 is the maximum permissible value of compressor rotary speed.
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Address after: 266100 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province, No. 151 Applicant after: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Address before: 266736 Hisense Road 1, South Village Town, Pingdu City, Qingdao, Shandong Applicant before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. |
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Address after: No.1 Haixin Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province Patentee after: Hisense Air Conditioning Co.,Ltd. Country or region after: China Address before: No. 151, Zhuzhou Road, Laoshan District, Qingdao, Shandong Patentee before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Country or region before: China |