CN106766366A - Frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning - Google Patents
Frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning Download PDFInfo
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- CN106766366A CN106766366A CN201611070767.7A CN201611070767A CN106766366A CN 106766366 A CN106766366 A CN 106766366A CN 201611070767 A CN201611070767 A CN 201611070767A CN 106766366 A CN106766366 A CN 106766366A
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- heat exchanger
- frequency
- frequency conversion
- changeable compressor
- air
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0313—Pressure sensors near the outdoor heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0314—Temperature sensors near the indoor heat exchanger
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2103—Temperatures near a heat exchanger
Abstract
The present invention relates to air-conditioning VFC field, more particularly to frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning.Frequency conversion air-cooled heat pump water chiller-heater system includes：Frequency-changeable compressor, indoor heat exchanger, outdoor heat exchanger, three is in series to heat loop or refrigerating circuit；Outdoor heat exchanger is furnished with frequency conversion fan；The water outlet side of indoor heat exchanger sets leaving water temperature sensors；Frequency-changeable compressor, frequency conversion fan, leaving water temperature sensors are connected with controller respectively.Its control method includes：In loop or refrigerating circuit is heated, the leaving water temperature of indoor heat exchanger is detected；Leaving water temperature is compared with given threshold, running frequency is determined according to comparative result.The present invention uses the cooperation of frequency-changeable compressor and frequency conversion fan, with reference to the leaving water temperature of indoor heat exchanger, the frequency conversion function mode of frequency-changeable compressor is determined, with the stable regulation when adapting to high load capacity, underload, relatively continuous fluctuating temperature is formed, the comfortableness that user uses is improve.
Description
Technical field
The present invention relates to air-conditioning VFC field, more particularly to frequency conversion air-cooled heat pump water chiller-heater system and its controlling party
Method and air-conditioning.
Background technology
It is main using blower fan outside constant speed compressor and constant speed in existing air-cooled heat-pump cold (heat) water dispenser group, determine its simple
Structure, cheap price, reliability higher captured most market, but as international community is to the weight of environmental energy
Depending on, people to the high request of air conditioning comfortableness, constant speed product is difficult in adapt to the development trend of society in the future.Existing air-cooled heat pump
Cold (heat) water system is difficult to the seasonal energy efficiency high of international community's requirement using constant speed compressor and blower fan, is realizing underload
Can only be by frequent start-stop compressor during operation, the fluctuating temperature for causing also further have impact on the comfortableness that user uses.
The content of the invention
(1) technical problem to be solved
It is an object of the invention to provide a kind of frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning, to solve
The problem of air-cooled heat pump (heat) water dispenser group changed speed operation.
(2) technical scheme
In order to solve the above-mentioned technical problem, the present invention puies forward a kind of frequency conversion air-cooled heat pump water chiller-heater system, and it includes：Frequency conversion pressure
Contracting unit, indoor heat exchanger, outdoor heat exchanger, three is in series to heat loop or refrigerating circuit；Wherein, the frequency conversion compression
Unit is connected by gas exhaust piping and return line with the indoor heat exchanger, the outdoor heat exchanger；
The outdoor heat exchanger is furnished with frequency conversion fan group；The water outlet side of the indoor heat exchanger sets leaving water temperature sensing
Device；
The frequency-changeable compressor group, the frequency conversion fan group, the leaving water temperature sensors are connected with controller respectively；
The frequency-changeable compressor group includes the frequency-changeable compressor that two or more is connected；The frequency conversion fan group include two with
The upper frequency conversion fan being connected with outdoor heat exchanger respectively.
In certain embodiments, preferably, all frequency-changeable compressors are in parallel.
In certain embodiments, preferably, four-way reversing valve and institute are passed through on the gas exhaust piping of the frequency-changeable compressor group
State the connected composition of indoor heat exchanger and heat loop, or the composition refrigerating circuit that is connected with outdoor heat exchanger.
In certain embodiments, preferably, gas-liquid separator is set in the return line.
In certain embodiments, preferably, the pipeline between the indoor heat exchanger and the outdoor heat exchanger with it is described
Hot-gas bypass is set between gas exhaust piping, hot gas bypass solenoid valve is set on the hot-gas bypass.
In certain embodiments, preferably, in cooling mode, when the indoor heat exchanger and the outdoor heat exchanger it
Between pipeline in pressure when being less than given threshold, the hot gas bypass solenoid valve is opened.
In certain embodiments, preferably, set on the pipeline between the indoor heat exchanger and the outdoor heat exchanger
Pressure sensor.
In certain embodiments, preferably, oil eliminator is set on the gas exhaust piping；The separation gas of the oil eliminator
Body is exported and heats loop or refrigerating circuit supply to described, and the separation oil export of the oil eliminator is accessed described in each
Frequency-changeable compressor.
In certain embodiments, preferably, more than one is set between the separation oil export and the frequency-changeable compressor
Capillary return duct, on capillary return duct described in wherein at least one set single-pass magnetic valve.
In certain embodiments, preferably, the single-pass magnetic valve is discontinuity unlatching.
In certain embodiments, preferably, hot-gas bypass, hot gas are set between the separation oil export and the gas exhaust piping
Hot gas bypass solenoid valve is set in bypass.
Present invention also offers a kind of air-conditioning, it includes described frequency conversion air-cooled heat pump water chiller-heater system.
Present invention also offers a kind of control method of the frequency conversion air-cooled heat pump water chiller-heater system, it includes：
In loop or refrigerating circuit is heated, the leaving water temperature of indoor heat exchanger is detected；
The leaving water temperature and given threshold are compared；When the leaving water temperature is less than the given threshold, then
Improve the frequency of frequency conversion fan in frequency-changeable compressor and outdoor heat exchanger frequency conversion fan group in frequency-changeable compressor group；When the water outlet
When temperature is more than the given threshold, then reduce in frequency-changeable compressor group in frequency-changeable compressor and outdoor heat exchanger frequency conversion fan group
The frequency of frequency conversion fan.
In certain embodiments, preferably, when in refrigeration mode, refrigerating circuit is started, the control method is also wrapped
Include：
Detect the pressure value of pipeline between the indoor heat exchanger and the outdoor heat exchanger；
When the pressure value is less than pressure threshold, start hot gas bypass solenoid valve, changed to the interior from gas exhaust piping
Pipeline supply between hot device and the outdoor heat exchanger.
In certain embodiments, preferably, described control method also includes：
Before the gas of frequency-changeable compressor group discharge is supplied to the indoor heat exchanger or outdoor heat exchanger, to described
The gas of frequency-changeable compressor group discharge carries out oily separation, separates oil and returns to each frequency conversion by more than one capillary return duct
Compressor；
Magnetic valve is set on the capillary return duct of part, and the magnetic valve discontinuity is opened.
(3) beneficial effect
The technical scheme that the present invention is provided, using the cooperation of frequency-changeable compressor group and frequency conversion fan group, frequency-changeable compressor group
It is made up of more than two frequency-changeable compressors, such as 2；Frequency conversion fan is also to be made up of more than two frequency conversion fans, such as and 2
It is individual；The effect of converting operation can be increased.With reference to the leaving water temperature of indoor heat exchanger, the frequency conversion running side of frequency-changeable compressor is determined
Formula, with the stable regulation when adapting to high load capacity, underload, forms relatively continuous fluctuating temperature, and improve user makes
Comfortableness.
On the other hand, hot-gas bypass is set between the pipeline and gas exhaust piping between indoor heat exchanger and outdoor heat exchanger, with
During regulation low load operation, the hypotony problem between indoor heat exchanger and outdoor heat exchanger.
On the other hand, oil eliminator is set on gas exhaust piping, can to low load operation when, oil return is bad asks for regulation
Topic.
Brief description of the drawings
Fig. 1 is frequency conversion air-cooled heat pump water chiller-heater system schematic in one embodiment of the invention；
Fig. 2 is air-conditioning schematic diagram in one embodiment of the invention.
Accompanying drawing is marked：
1 frequency-changeable compressor；2 outdoor heat exchangers；3 indoor heat exchangers；4 frequency conversion fans；5 choke valves；6 oil eliminators；7 hot gas
Bypass；8 hot gas bypass solenoid valves；9 high-voltage switch gears；10 low tension switches；11 capillary return ducts；12 returning-oil temperature sensors；13 gas
Liquid/gas separator；T4 environment temperature sensors；T3 air side heat exchanger pipe temperature sensors；Tz air side heat exchanger outlet temperature sensors；
Tin inflow temperature sensors；Tout leaving water temperature sensors；The antifreeze temperature sensors of T6；T7C1, T7C2 delivery temperature are sensed
Device；TL suction temperature sensors；SV4 single-pass magnetic valves.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Because machinery, to frequency-changeable compressor start and stop, causes regulation discontinuous in current underload, high load capacity operation of air conditioner, use
Uncomfortable problem is felt at family, and the present invention provides frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning.
Product, method etc. will be described in detail by basic engineering, extension design and alternative design below.
A kind of air-conditioning frequency conversion air-cooled heat pump water chiller-heater system, as shown in figure 1, it is mainly by frequency-changeable compressor group (by two
More than frequency-changeable compressor 1 constitute, in the present embodiment as a example by 2), indoor heat exchanger 3, outdoor heat exchanger 2 constituted, wherein
Frequency-changeable compressor, indoor heat exchanger 3 (water-side heat), outdoor heat exchanger 2 (air side heat exchanger) three constitute refrigeration mode or
The series circulation path of heating mode, i.e. refrigerating circuit heat loop.(loop is heated under heating mode), frequency-changeable compressor row
The high temperature and high pressure gas for going out initially enter indoor heat exchanger 3 (serving as condenser, perform condensation function), heat exchange, room air quilt
Heat up, the refrigerant after being condensed enters outdoor heat exchanger 2 (serving as evaporator, perform vaporization function), and gas returns to change after evaporation
Frequency compressor, is compressed to high temperature and high pressure gas, realizes that heats a circulation.Under refrigeration mode (refrigerating circuit), frequency conversion compression
The high temperature and high pressure gas of machine discharge initially enter outdoor heat exchanger 2 (serving as condenser, perform condensation function), cold after being condensed
Matchmaker gets in heat exchanger 3 (serving as evaporator, perform vaporization function), and heat exchange, room air is lowered the temperature, and the gas after evaporation is returned
To frequency-changeable compressor, high temperature and high pressure gas are compressed to, realize a kind of refrigeration cycle.
Real-time Collection temperature everywhere for convenience, convenient regulation, frequency-changeable compressor sets frequency-changeable compressor head temperature and passes
Sensor, gas exhaust piping is setting exhaust gas temperature sensor T7C1, T7C2 close to frequency-changeable compressor exhaust ports, in outdoor heat exchanger
Environment temperature sensor T4 and air side heat exchanger pipe temperature sensor T3 is set on 2, indoors heat exchanger 3 and outdoor heat exchanger 2 it
Between pipeline be also provided with air side heat exchanger outlet temperature sensor Tz, the water inlet of indoor heat exchanger 3 at the outdoor heat exchanger 2
Inflow temperature sensor Tin is set at mouthful, and water outlet sets in leaving water temperature sensors Tout, indoor heat exchanger 3 and also sets up
Antifreeze temperature sensor T6, sets suction temperature sensor TL in return line.Above-mentioned various temperature sensors with control
Device is connected.High-voltage switch gear 9 is also provided with gas exhaust piping, low tension switch 10 is also provided with return line.
In certain embodiments, frequency-changeable compressor is connected in parallel, and the gas of all frequency-changeable compressor discharges is all straight
Tap into gas exhaust piping；Low-pressure gas in return line is conveyed to each frequency-changeable compressor simultaneously.
Wherein, common exhaust pipe road and return line in loop or refrigerating circuit is heated, frequency-changeable compressor 1 is by exhaust
Pipeline and return line are connected with indoor heat exchanger 3, outdoor heat exchanger 2；Outdoor heat exchanger is furnished with frequency conversion fan group, frequency conversion fan
Group is made up of more than two frequency conversion fans, in the present embodiment as a example by 2, in order to realize that frequency conversion fan 4 and frequency conversion are compressed
The VFC of machine 1, the water outlet side of indoor heat exchanger 3 sets leaving water temperature sensors Tout, frequency-changeable compressor 1, frequency conversion fan
4th, leaving water temperature sensors Tout is connected with controller respectively, after controller receives leaving water temperature value, according to the leaving water temperature value
With design temperature threshold value, regulation running frequency is determined how.(specific adjusting method, the control method that see below).
Gas exhaust piping mentioned above, return line pass through four-way reversing valve and indoor heat exchanger 3 or outdoor heat exchanger
2 are connected, and composition heats loop or refrigerating circuit.In certain embodiments, in order to improve return-air effect, set in return line
Gas-liquid separator 13.
When being run under refrigeration mode, underload based on frequency-changeable compressor 1, frequency conversion fan 4, indoor heat exchanger 3 and outdoor
Easily there is the relatively low situation of air pressure after refrigeration throttling in pipeline between heat exchanger 2, in order to avoid such case, the pipeline with
Hot-gas bypass 7 is set between gas exhaust piping, hot gas bypass solenoid valve 8 is set on hot-gas bypass 7.Once detect indoor heat exchanger 3
And air pressure between outdoor heat exchanger 2 is relatively low, opens hot gas bypass solenoid valve 8, to realize that effective atmosphere is supplemented.I.e. in refrigeration mould
Under formula, when pressure is less than given threshold in the pipeline between indoor heat exchanger 3 and outdoor heat exchanger 2, hot gas bypass solenoid valve 8
Open.
In order to effectively obtain the atmospheric pressure value of the pipeline between indoor heat exchanger 3 and outdoor heat exchanger 2, the section on the pipeline
Stream valve 5 exit sets pressure sensor.In addition, on pipeline between indoor heat exchanger 3 and outdoor heat exchanger 2, in choke valve 5
Position sets capillary, and the two ends of capillary are accessed the inlet and outlet of choke valve 5, are equal to across choke valve 5.
In view of often occurring the bad problem of oil return during low load operation, therefore, set on gas exhaust piping
Oil eliminator 6；The separated gas outlet of oil eliminator 6 goes out to loop or refrigerating circuit supply, the separation oil of oil eliminator 6 is heated
Mouth accesses each frequency-changeable compressor 1.
In order to send the oil after separation back to frequency-changeable compressor again, set between oil export and frequency-changeable compressor 1 being separated
More than one capillary return duct 11, which part capillary return duct 11 is unimpeded state, is always maintained at unimpeded capillary backflow
Pipe is evenly distributed to each frequency-changeable compressor, to corresponding frequency-changeable compressor oil return；Between other capillary return ducts 11 are
Disconnection is opened, and is controlled by single-pass magnetic valve SV4.Single-pass magnetic valve SV4 is opened for discontinuity.Such as：Periodically open.Capillary is returned
Returning-oil temperature sensor 12 can also be set in flow tube.
In certain embodiments, when oil is separated and hot-gas bypass 7 simultaneously in the presence of, separate and set between oil export and gas exhaust piping
Hot-gas bypass 7 is put, hot gas bypass solenoid valve 8 is set on hot-gas bypass 7.
Above-mentioned frequency conversion air-cooled heat pump water chiller-heater system is applied to air-conditioning, as shown in Fig. 2 new air-conditioning will be obtained.
A kind of control method is provided with reference to frequency conversion air-cooled heat pump water chiller-heater system mentioned above, its step includes：
Step 110, in loop or refrigerating circuit is heated, detects the leaving water temperature of indoor heat exchanger；
Step 120, leaving water temperature is compared with given threshold；
When leaving water temperature is less than given threshold, then frequency-changeable compressor and outdoor heat exchanger change in frequency-changeable compressor group are improved
The frequency of frequency conversion fan in frequency blower fan group；When leaving water temperature is more than given threshold, then frequency conversion pressure in frequency-changeable compressor group is reduced
The frequency of frequency conversion fan in contracting machine and outdoor heat exchanger frequency conversion fan group.
Such as：Set temperature value is 7 DEG C, when leaving water temperature is more than 7 DEG C, reduces the fortune of frequency-changeable compressor and frequency conversion fan
Turn frequency, when leaving water temperature is less than 7 DEG C, improve the operating frequency of frequency-changeable compressor and frequency conversion fan.
In addition, after the selection of refrigeration or heating mode is received, corresponding mode operation can be entered, when in refrigeration mode
When, start refrigerating circuit, now, in addition to performing step 110 and step 120, when especially starting low-frequency operation, in addition it is also necessary to carry out
Following steps：
Step 200, the pressure value of pipeline between detection indoor heat exchanger and outdoor heat exchanger；
When pressure value is less than pressure threshold, start hot gas bypass solenoid valve, from gas exhaust piping to indoor heat exchanger and room
Pipeline supply between external heat exchanger.
In addition, under heating mode or refrigeration mode, in low-frequency operation, with reference to oil eliminator, in frequency-changeable compressor row
The gas for going out also needs to carry out following steps before being supplied to indoor heat exchanger or outdoor heat exchanger：
Step 300, the gas to the discharge of frequency-changeable compressor group carries out oily separation, separates oil and is returned by more than one capillary
Flow tube returns to each frequency-changeable compressor；Part capillary return duct will directly separate oil feeding frequency-changeable compressor, and part capillary is returned
Magnetic valve is set in flow tube, and magnetic valve discontinuity is opened.
Step 310, in cooling mode, the pressure value of pipeline between detection indoor heat exchanger and outdoor heat exchanger；
The step is based on air exit and indoor heat exchanger (water cooling heat exchanger) and outdoor heat exchanger (wind in oil eliminator
Cold heat exchanger) hot-gas bypass between connecting path.
When pressure value is less than pressure threshold, start hot gas bypass solenoid valve, from gas exhaust piping to indoor heat exchanger and room
Pipeline supply between external heat exchanger.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (15)
1. a kind of frequency conversion air-cooled heat pump water chiller-heater system, it is characterised in that including：Frequency-changeable compressor group, indoor heat exchanger, outdoor
Heat exchanger, three is in series to heat loop or refrigerating circuit；Wherein, the frequency-changeable compressor group passes through gas exhaust piping and return-air
Pipeline is connected with the indoor heat exchanger, the outdoor heat exchanger；
The outdoor heat exchanger is furnished with frequency conversion fan group；The water outlet side of the indoor heat exchanger sets leaving water temperature sensors；
The frequency-changeable compressor group, the frequency conversion fan group, the leaving water temperature sensors are connected with controller respectively；
The frequency-changeable compressor group includes the frequency-changeable compressor that two or more is connected；The frequency conversion fan group includes two or more point
The frequency conversion fan not being connected with outdoor heat exchanger.
2. frequency conversion air-cooled heat pump water chiller-heater system as claimed in claim 1, it is characterised in that all frequency-changeable compressors are simultaneously
Connection.
3. frequency conversion air-cooled heat pump water chiller-heater system as claimed in claim 1, it is characterised in that the row of the frequency-changeable compressor group
Loop is heated by the four-way reversing valve composition that is connected with the indoor heat exchanger on air pipe, or the composition that is connected with outdoor heat exchanger
Refrigerating circuit.
4. frequency conversion air-cooled heat pump water chiller-heater system as claimed in claim 1, it is characterised in that gas is set in the return line
Liquid/gas separator.
5. frequency conversion air-cooled heat pump water chiller-heater system as claimed in claim 1, it is characterised in that the indoor heat exchanger and described
Hot-gas bypass is set between the pipeline and the gas exhaust piping between outdoor heat exchanger, hot-gas bypass electricity is set on the hot-gas bypass
Magnet valve.
6. frequency conversion air-cooled heat pump water chiller-heater system as claimed in claim 5, it is characterised in that in cooling mode, when described
When pressure is less than given threshold in pipeline between indoor heat exchanger and the outdoor heat exchanger, the hot gas bypass solenoid valve is opened
Open.
7. frequency conversion air-cooled heat pump water chiller-heater system as claimed in claim 5, it is characterised in that the indoor heat exchanger and described
Pressure sensor is set on pipeline between outdoor heat exchanger.
8. the frequency conversion air-cooled heat pump water chiller-heater system as described in claim any one of 1-7, it is characterised in that the gas exhaust piping
Upper setting oil eliminator；The separated gas outlet of the oil eliminator heats loop or refrigerating circuit supply, institute to described
The separation oil export for stating oil eliminator accesses each described frequency-changeable compressor.
9. frequency conversion air-cooled heat pump water chiller-heater system as claimed in claim 8, it is characterised in that the separation oil export and described
More than one capillary return duct is set between frequency-changeable compressor, single-pass electricity is set on capillary return duct described in wherein at least one
Magnet valve.
10. frequency conversion air-cooled heat pump water chiller-heater system as claimed in claim 9, it is characterised in that between the single-pass magnetic valve is
Disconnected property is opened.
11. frequency conversion air-cooled heat pump water chiller-heater systems as claimed in claim 8, it is characterised in that the separation oil export and institute
Hot-gas bypass is set between stating gas exhaust piping, hot gas bypass solenoid valve is set on hot-gas bypass.
12. a kind of air-conditionings, it is characterised in that including the frequency conversion air-cooled heat pump water chiller-heater system described in claim any one of 1-11
System.
A kind of 13. control methods of the frequency conversion air-cooled heat pump water chiller-heater system as described in claim any one of 1-11, its feature exists
In, including：
In loop or refrigerating circuit is heated, the leaving water temperature of indoor heat exchanger is detected；
The leaving water temperature and given threshold are compared；When the leaving water temperature is less than the given threshold, then improve
In frequency-changeable compressor group in frequency-changeable compressor and outdoor heat exchanger frequency conversion fan group frequency conversion fan frequency；When the leaving water temperature
During more than the given threshold, then frequency conversion in frequency-changeable compressor and outdoor heat exchanger frequency conversion fan group in frequency-changeable compressor group is reduced
The frequency of blower fan.
14. control methods as claimed in claim 13, it is characterised in that when in refrigeration mode, start refrigerating circuit, institute
Stating control method also includes：
Detect the pressure value of pipeline between the indoor heat exchanger and the outdoor heat exchanger；
When the pressure value is less than pressure threshold, start hot gas bypass solenoid valve, from gas exhaust piping to the indoor heat exchanger
And the pipeline supply between the outdoor heat exchanger.
15. control method as described in claim 13 or 14, it is characterised in that also include：
Before the gas of frequency-changeable compressor group discharge is supplied to indoor heat exchanger or outdoor heat exchanger, the frequency conversion is compressed
The gas of unit discharge carries out oily separation, separates oil and returns to each frequency-changeable compressor by more than one capillary return duct；
Magnetic valve is set on the capillary return duct of part, and the magnetic valve discontinuity is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611070767.7A CN106766366A (en) | 2016-11-28 | 2016-11-28 | Frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339834A (en) * | 2017-07-17 | 2017-11-10 | 珠海格力电器股份有限公司 | The control method and device of natural cooling unit |
| CN107367013A (en) * | 2017-06-06 | 2017-11-21 | 珠海格力电器股份有限公司 | Control the methods, devices and systems of compressor |
| CN107543346A (en) * | 2017-07-18 | 2018-01-05 | 广东美的暖通设备有限公司 | One kind control frosting uniform method, system and air cooling module unit |
| CN109059376A (en) * | 2018-08-13 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of full frequency conversion heat pump system constant temperature water supply control method and system |
| CN109737633A (en) * | 2018-12-19 | 2019-05-10 | 宁波工程学院 | A kind of kitchen bathroom integral multifunctional air-conditioner set and its control method |
| CN110207420A (en) * | 2019-06-25 | 2019-09-06 | 广东美的暖通设备有限公司 | Multi-line system and its control method |
| CN110686381A (en) * | 2019-10-15 | 2020-01-14 | 广东美的暖通设备有限公司 | Air conditioner control method and device and computer readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5568732A (en) * | 1994-04-12 | 1996-10-29 | Kabushiki Kaisha Toshiba | Air conditioning apparatus and method of controlling same |
| CN1804489A (en) * | 2005-01-14 | 2006-07-19 | 刘永青 | Air source hot pump water heater capable of changing speed and regulating pressure under multiple working conditions |
| CN1888747A (en) * | 2005-06-30 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Oil recovering structure for air conditioner |
| CN103673391A (en) * | 2013-12-09 | 2014-03-26 | 江苏苏净集团有限公司 | Carbon dioxide heat pump system and control method thereof |
| CN204027107U (en) * | 2014-01-10 | 2014-12-17 | 广东申菱空调设备有限公司 | With the air-conditioning refrigeration system of hot-gas bypass |
-
2016
- 2016-11-28 CN CN201611070767.7A patent/CN106766366A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5568732A (en) * | 1994-04-12 | 1996-10-29 | Kabushiki Kaisha Toshiba | Air conditioning apparatus and method of controlling same |
| CN1804489A (en) * | 2005-01-14 | 2006-07-19 | 刘永青 | Air source hot pump water heater capable of changing speed and regulating pressure under multiple working conditions |
| CN1888747A (en) * | 2005-06-30 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Oil recovering structure for air conditioner |
| CN103673391A (en) * | 2013-12-09 | 2014-03-26 | 江苏苏净集团有限公司 | Carbon dioxide heat pump system and control method thereof |
| CN204027107U (en) * | 2014-01-10 | 2014-12-17 | 广东申菱空调设备有限公司 | With the air-conditioning refrigeration system of hot-gas bypass |
Non-Patent Citations (3)
| Title |
|---|
| 刘孝刚: "《冷库构造、原理与检修》", 30 November 2015, 北京理工大学出版社 * |
| 张天彤: "《城轨交通车辆空调装置》", 31 March 2014, 北京交通大学出版社 * |
| 韩雪涛: "《中央空调维修技能"1对1"培训速成》", 30 June 2012, 机械工业出版社 * |
Cited By (12)
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|---|---|---|---|---|
| CN107367013A (en) * | 2017-06-06 | 2017-11-21 | 珠海格力电器股份有限公司 | Control the methods, devices and systems of compressor |
| CN107367013B (en) * | 2017-06-06 | 2019-11-12 | 珠海格力电器股份有限公司 | Control the methods, devices and systems of compressor |
| CN107339834A (en) * | 2017-07-17 | 2017-11-10 | 珠海格力电器股份有限公司 | The control method and device of natural cooling unit |
| CN107339834B (en) * | 2017-07-17 | 2019-09-24 | 珠海格力电器股份有限公司 | The control method and device of natural cooling unit |
| CN107543346A (en) * | 2017-07-18 | 2018-01-05 | 广东美的暖通设备有限公司 | One kind control frosting uniform method, system and air cooling module unit |
| CN107543346B (en) * | 2017-07-18 | 2020-02-14 | 广东美的暖通设备有限公司 | Method and system for controlling frosting uniformity and air cooling module unit |
| CN109059376A (en) * | 2018-08-13 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of full frequency conversion heat pump system constant temperature water supply control method and system |
| CN109737633A (en) * | 2018-12-19 | 2019-05-10 | 宁波工程学院 | A kind of kitchen bathroom integral multifunctional air-conditioner set and its control method |
| CN110207420A (en) * | 2019-06-25 | 2019-09-06 | 广东美的暖通设备有限公司 | Multi-line system and its control method |
| CN110207420B (en) * | 2019-06-25 | 2021-03-23 | 广东美的暖通设备有限公司 | Multi-split system and control method thereof |
| CN110686381A (en) * | 2019-10-15 | 2020-01-14 | 广东美的暖通设备有限公司 | Air conditioner control method and device and computer readable storage medium |
| CN110686381B (en) * | 2019-10-15 | 2021-09-14 | 广东美的暖通设备有限公司 | Air conditioner control method and device and computer readable storage medium |
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