CN105928239A - Cooling and heating type air conditioner and control method thereof - Google Patents
Cooling and heating type air conditioner and control method thereof Download PDFInfo
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- CN105928239A CN105928239A CN201610281558.0A CN201610281558A CN105928239A CN 105928239 A CN105928239 A CN 105928239A CN 201610281558 A CN201610281558 A CN 201610281558A CN 105928239 A CN105928239 A CN 105928239A
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- air conditioner
- heating
- heat exchanger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- 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
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
-
- 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
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- F25B2700/2109—Temperatures of a separator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a cooling and heating type air conditioner and a control method thereof. The cooling and heating type air conditioner comprises a dual-cylinder compressor, a reversing assembly, an outdoor heat exchanger, an indoor heat exchanger and a gas-liquid separator. The dual-cylinder compressor comprises a first gas cylinder, a second gas cylinder, a first liquid storage device and a second liquid storage device. A gas suction opening of the first gas cylinder communicates with the first liquid storage device. A gas suction opening of the second gas cylinder communicates with the second liquid storage device. The value range of the exhaust volume ratio of the second gas cylinder to the first gas cylinder is 1%-10%. The reversing assembly comprises a first valve port, a second valve port, a third valve port and a fourth valve port, and the fourth valve port is connected with the first liquid storage device. The gas-liquid separator comprises a gas outlet, a first connector and a second connector. The gas outlet is connected with the second liquid storage device. A first throttling element with a fixed opening degree is connected between the first connector and the outdoor heat exchanger in series. A second throttling element with a fixed opening degree is connected between the second connector and the indoor heat exchanger in series. According to the cooling and heating type air conditioner, the energy efficiency of the air conditioner is effectively improved.
Description
Technical field
The present invention relates to refrigerating field, especially relate to a kind of heating and air conditioner and control method thereof.
Background technology
Gaseous refrigerant after throttling and before entering evaporimeter is not carried out excellent by current air-conditioning refrigeration system
Change cyclic design, cause gaseous refrigerant to affect evaporator heat exchange performance, and increase compressor compresses power consumption,
Thus have influence on energy efficiency of air conditioner level.Air injection enthalpy-increasing and Two-stage Compression technology can improve air-conditioning system low
Heating capacity level under gentle ultralow temperature, but for the commonly used cooling condition of air-conditioning, efficiency promotes non-
The most limited.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.
To this end, the present invention proposes a kind of heating and air conditioner, energy efficiency of air conditioner can be effectively improved, effectively promote
Enter energy-saving and emission-reduction.
The present invention also proposes the control method of a kind of above-mentioned heating and air conditioner.
Heating and air conditioner according to embodiments of the present invention, including: duplex cylinder compressor, described duplex cylinder compressor
Including housing, the first cylinder, the second cylinder, the first reservoir and the second reservoir, described housing is provided with
Exhaust outlet, described first cylinder and described second cylinder are respectively provided in described housing, described first reservoir
It is located at outside described housing with described second reservoir, the air entry of described first cylinder and described first reservoir
Connection, the air entry of described second cylinder connects with described second reservoir, described second cylinder and described the
The span of the delivery space ratio of one cylinder is 1%～10%；Commutation assembly, described commutation assembly includes
One of them in first valve port to the 4th valve port, described first valve port and the second valve port and the 3rd valve port is even
Logical, described 4th valve port connects with another in described second valve port and described 3rd valve port, and described first
Valve port is connected with described exhaust outlet, and described 4th valve port is connected with described first reservoir；Outdoor heat exchanger and
Indoor heat exchanger, the first end of described outdoor heat exchanger is connected with described second valve port, described indoor heat exchanger
The first end be connected with described 3rd valve port；Gas-liquid separator, described gas-liquid separator include gas vent,
First interface and the second interface, described gas vent is connected with described second reservoir, described first interface with
Second end of described outdoor heat exchanger is connected, the second end phase of described second interface and described indoor heat exchanger
Even, the first throttle element of fixing aperture, institute it are in series with between described first interface and described outdoor heat exchanger
State the second section fluid element being in series with fixing aperture between the second interface and described indoor heat exchanger.
Heating and air conditioner according to embodiments of the present invention, by arranging above-mentioned duplex cylinder compressor, can be effective
Improve energy efficiency of air conditioner, effectively facilitate energy-saving and emission-reduction, simultaneously by arranging gas-liquid separator, can improve and change
The thermal efficiency, reduces compressor compresses power consumption, improves further air-conditioner ability and efficiency, further through arranging the
Two reservoirs, can extend the service life of duplex cylinder compressor.
In some embodiments of the invention, it is in series with electricity between described gas vent and described second reservoir
Magnet valve.
In some embodiments of the invention, the span of the volume of described gas-liquid separator is
100mL-500mL。
In some embodiments of the invention, the volume of described first reservoir is more than described second reservoir
Volume.
The control method of heating and air conditioner according to embodiments of the present invention, according to heating and air conditioner this
The heating and air conditioner of bright above-described embodiment, comprises the steps: refrigeration or during heating operation according to detecting
Compressor operation parameters and/or outdoor environment temperature adjust described duplex cylinder compressor running frequency to meet
Condition, wherein said compressor operation parameters includes in running current, pressure at expulsion, delivery temperature at least
One.
The control method of heating and air conditioner according to embodiments of the present invention, by running according to inspection
Survey result and adjust the running frequency of compressor, such that it is able to let the system operate in suitable parameter area, carry
High air-conditioner reliability of operation.
In some embodiments of the invention, multiple different delivery temperature is preset interval, the plurality of exhaust
The regulating command of the running frequency that temperature range is corresponding is different, the exhaust that detection delivery temperature basis detect
The regulating command that the delivery temperature interval at temperature place is corresponding regulates described running frequency.
In some embodiments of the invention, preset that multiple outdoor temperatures are interval, heat stoppage protection electric current and
Refrigeration stoppage protection electric current, multiple outdoor temperature intervals corresponding different limit frequency protective current, first sensing chamber
External environment temperature, it is right then to obtain according to the outdoor temperature interval at the described outdoor environment temperature place detected
Answer limit frequency protective current, adjust described running frequency so that actually detected to running current reach corresponding
Described limit frequency protective current, the described running current detected the most when cooling is shut down more than described refrigeration and is protected
The most directly shut down when protecting electric current；The described running current detected when heating heats stoppage protection described in being more than
The most directly shut down during electric current.
In some embodiments of the invention, multiple different pressure at expulsion is preset interval, the plurality of exhaust
The regulating command of the running frequency that pressure range is corresponding is different, the exhaust that detection pressure at expulsion basis detect
The regulating command that the pressure at expulsion interval at pressure place is corresponding regulates described running frequency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the heating and air conditioner according to the embodiment of the present invention；
Fig. 2 is the schematic diagram of the heating and air conditioner being provided with magnetic valve according to the embodiment of the present invention；
Fig. 3 is the schematic diagram of the duplex cylinder compressor according to the embodiment of the present invention；
Fig. 4 is the flow chart of the control method of the heating and air conditioner according to the embodiment of the present invention.
Reference:
Heating and air conditioner 100,
Duplex cylinder compressor 1, housing the 10, first cylinder the 11, second cylinder the 12, first reservoir 13,
Two reservoirs 14, exhaust outlet 15,
Commutation assembly the 2, first valve port D, the second valve port C, the 3rd valve port E, the 4th valve port S,
Outdoor heat exchanger 3, indoor heat exchanger 4,
Gas-liquid separator 5, gas vent m, first interface f, the second interface g,
First throttle element 6, second section fluid element 7,
Magnetic valve 20.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings.Lead to below
It is exemplary for crossing the embodiment being described with reference to the drawings, it is intended to be used for explaining the present invention, and it is not intended that right
The restriction of the present invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length
Degree ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ",
" level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ",
" circumferential " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be only for
It is easy to describe the present invention and simplifying describe rather than instruction or the device of hint indication or element must have
Specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint
Relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can express or implicitly include at least one this feature.In describing the invention,
" multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ",
The term such as " fix " should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect,
Or it is integral；Can be mechanically connected, it is also possible to be electrical connection or each other can communication；Can be to be joined directly together,
Can also be indirectly connected to by intermediary, can be connection or two elements mutual of two element internals
Interactively, unless otherwise clear and definite restriction.For the ordinary skill in the art, can basis
Concrete condition understands above-mentioned term concrete meaning in the present invention.
Heating and air conditioner 100 according to embodiments of the present invention is described in detail, wherein below with reference to Fig. 1-Fig. 3
Heating and air conditioner 100 has refrigeration mode and heating mode.
As shown in figures 1 and 3, heating and air conditioner 100 according to embodiments of the present invention, including: twin-tub
Compressor 1, commutation assembly 2, outdoor heat exchanger 3 and indoor heat exchanger 4, gas-liquid separator 5, first segment
Fluid element 6 and second section fluid element 7.Wherein duplex cylinder compressor 1 include housing the 10, first cylinder 11,
Second cylinder the 12, first reservoir 13 and the second reservoir 14, housing 10 is provided with exhaust outlet 15, the
One cylinder 11 and the second cylinder 12 are respectively provided in housing 10, the first reservoir 13 and the second reservoir
14 are located at outside housing 10, and air entry and first reservoir 13 of the first cylinder 11 connect, the second cylinder 12
Air entry and the second reservoir 14 connect.It is to say, the first cylinder 11 and the second cylinder 12 are carried out
Independent compression process, the gas coolant separated from the first reservoir 13 enters in being drained into the first cylinder 11
Row compression, the gas coolant separated from the second reservoir 14 is compressed in being drained into the second cylinder 12,
Refrigerant after the compression that the first cylinder 11 is discharged and the refrigerant after the compression that the second cylinder 12 is discharged are respectively
Then discharge from exhaust outlet 15 in being drained into housing 10.
The span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%～10%.Enter one
Step ground, the span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%～9%, preferably
Ground, the span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 4%～9%.Such as
The delivery space ratio of two cylinders 12 and the first cylinder 11 can be the parameter such as 4%, 5%, 8% or 8.5%.
Commutation assembly 2 includes the first valve port D to the 4th valve port S, the first valve port D and the second valve port C and the
One of them connection in three valve port E, in the 4th valve port S and the second valve port C and described 3rd valve port E
Another connection, the first valve port D is connected with exhaust outlet 15, and the 4th valve port S and the first reservoir 13 are connected.
First end of outdoor heat exchanger 3 and the second valve port C are connected, the first end of indoor heat exchanger 4 and the 3rd valve port
E is connected.Specifically, when heating and air conditioner 100 is freezed, the first valve port D and the second valve port C connection
And the 3rd valve port E and the 4th valve port S connection, when heating and air conditioner 100 heats, the first valve port D
Connect with the 3rd valve port E and the second valve port C and the 4th valve port S connection.Preferably, commutation assembly 2 is four
Logical valve.
Gas-liquid separator 5 includes gas vent m, first interface f and the second interface g, gas vent m with
Second reservoir 14 is connected, and first interface f is connected with the second end of outdoor heat exchanger 3, the second interface g
It is connected with the second end of indoor heat exchanger 4, between first interface f and outdoor heat exchanger 3, is in series with fixing opening
The first throttle element 6 of degree, is in series with the second of fixing aperture between the second interface g and indoor heat exchanger 4
Restricting element 7.Alternatively, first throttle element 6 is capillary or choke valve, second section fluid element 7
For capillary or choke valve.
When heating and air conditioner 100 is freezed, the high temperature discharged from the exhaust outlet 15 of duplex cylinder compressor 1 is high
Pressure refrigerant is drained in outdoor heat exchanger 3 by the first valve port D and the second valve port C and carries out condensation heat radiation, from
The high-pressure liquid refrigerant that outdoor heat exchanger 3 is discharged after the one-level reducing pressure by regulating flow of first throttle element 6 from the
One interface f is drained in gas-liquid separator 5 and carries out gas-liquid separation, the intermediate pressure gaseous coolant separated
Be drained into the second reservoir 14 from gas vent m and carry out further gas-liquid separation, afterwards gaseous coolant from
Second reservoir 14 is compressed in being drained into the second cylinder 12.
From the intermediate pressure liquid refrigerant of the second interface g discharge of gas-liquid separator 5 through second section fluid element
Heat exchange is carried out to reduce indoor environment temperature in being drained into indoor heat exchanger 4 after the two-step throttle step-down of 7, from
The refrigerant that indoor heat exchanger 4 is discharged is drained into the first reservoir 13 by the 3rd valve port E and the 4th valve port S
In, it is compressed in the refrigerant of the first reservoir 13 discharge is drained into the first cylinder 11.
When heating and air conditioner 100 heats, the high temperature discharged from the exhaust outlet 15 of duplex cylinder compressor 1 is high
Pressure refrigerant is drained in indoor heat exchanger 4 by the first valve port D and the 3rd valve port E and carries out condensation heat radiation to rise
High indoor environment temperature, from the high-pressure liquid refrigerant of indoor heat exchanger 4 discharge through second section fluid element 7
One-level reducing pressure by regulating flow after be drained into gas-liquid separator 5 from the second interface g and to carry out gas-liquid separation, isolate
The intermediate pressure gaseous coolant come is drained into the second reservoir 14 from gas vent m and carries out further gas-liquid
Separating, gaseous coolant is drained in the second cylinder 12 from the second reservoir 14 and is compressed afterwards.
From the intermediate pressure liquid refrigerant of the first interface f discharge of gas-liquid separator 5 through first throttle element
Carry out heat exchange in being drained into outdoor heat exchanger 3 after the two-step throttle step-down of 6, discharge from outdoor heat exchanger 3
Refrigerant is drained in the first reservoir 13 by the second valve port C and the 4th valve port S, from the first reservoir 13
The refrigerant discharged is compressed in being drained into the first cylinder 11.
It follows that when heating and air conditioner 100 is run, the refrigerant of different pressures state has respectively entered
In first cylinder 11 and the second cylinder 12, the first cylinder 11 and the second cylinder 12 complete independently compression process,
Refrigerant after the compression that the first cylinder 11 is discharged and the refrigerant after the compression that the second cylinder 12 is discharged are discharged to
Discharge from exhaust outlet 15 after mixing in housing 10, simultaneously because the second cylinder 12 and row of the first cylinder 11
The span of air space ratio is 1%～10%, and the refrigerant that flow is less and pressure state is higher is drained into row
It is compressed in the second cylinder 12 that air space is less, such that it is able to improve efficiency, energy-saving and emission-reduction.
Simultaneously by being provided with gas-liquid separator 5 between outdoor heat exchanger 3 and indoor heat exchanger 4, thus gas
Liquid/gas separator 5 is compressed in being expelled back into the second cylinder 12 after being separated by a part of gaseous coolant, by
This is flowed into the gas content in the refrigerant of indoor heat exchanger 4 and reduces stream when heating when reducing refrigeration
Enter the gas content in the refrigerant of outdoor heat exchanger 3, decrease gaseous coolant to the indoor as evaporimeter
The impact of the heat exchange property of heat exchanger 4 or outdoor heat exchanger 3, such that it is able to improve heat exchange efficiency, reduces
Compressor compresses power consumption.
Again owing to being provided with the second reservoir 14, such that it is able to the refrigerant discharged from gas-liquid separator 5 is entered
The further gas-liquid separation of row, can avoid liquid coolant to return in the second cylinder 12 further, thus avoid
There is liquid hit phenomenon in duplex cylinder compressor 1, improves the service life of duplex cylinder compressor 1.
Heating and air conditioner 100 according to embodiments of the present invention, by arranging above-mentioned duplex cylinder compressor 1, can
To be effectively improved energy efficiency of air conditioner, effectively facilitate energy-saving and emission-reduction, simultaneously by arranging gas-liquid separator 5, can
To improve heat exchange efficiency, reduce compressor compresses power consumption, improve air-conditioner ability and efficiency further, lead to again
Cross and the second reservoir 14 is set, the service life of duplex cylinder compressor can be extended.
As in figure 2 it is shown, in some embodiments of the invention, gas vent m and the second reservoir 14 it
Between be in series with magnetic valve 20, thus when the liquid coolant in gas-liquid separator 5 is beyond safety levels, logical
Crossing closedown magnetic valve 20 can avoid liquid refrigerants to enter in the second cylinder 12, such that it is able to avoid twin-tub
There is liquid hammer in compressor 1, extends the service life of duplex cylinder compressor 1.It is possible to further in gas-liquid
On separator 5, liquid level sensor is set, controls opening of magnetic valve 20 by the testing result of liquid level sensor
Closed state.
In some embodiments of the invention, the span of the volume of gas-liquid separator 5 is
100mL-500mL。
In some embodiments of the invention, the volume of the first reservoir 13 is more than the appearance of the second reservoir 14
Long-pending.Thus on the premise of the decrement ensureing the second cylinder 12, by making the appearance of the second reservoir 14
Long-pending less, cost can be reduced.Preferably, the volume of the second reservoir 14 is not more than the first reservoir 13
/ 2nd of volume.
Inventor by heating and air conditioner according to the above embodiment of the present invention (set specified refrigerating capacity as
3.5kw, is set as 7.6% by the delivery space ratio of the second cylinder and the first cylinder) under different operating modes
Efficiency compares with existing heating and air conditioner efficiency at the same conditions, obtains following data:
| Measurement condition | Prior art efficiency | Technical solution of the present invention efficiency | Lifting ratio |
| Specified refrigeration | 3.93 | 4.26 | 8.40% |
| Middle refrigeration | 5.88 | 6.18 | 5.10% |
| Specified heat | 3.64 | 3.91 | 7.42% |
| Centre heats | 5.55 | 5.89 | 6.13% |
| Low-temperature heating | 2.57 | 2.73 | 6.23% |
| APF | 4.61 | 4.92 | 6.72% |
It follows that heating and air conditioner according to embodiments of the present invention is compressed relative to existing cold-warm type
Machine, each operating mode efficiency and annual efficiency APF are all obviously improved.
Inventor is by different specified refrigerating capacitys and the changes in temperature of the embodiment of the present invention of different delivery space ratio simultaneously
Type air-conditioner compares with the heating and air conditioner under existing identical operating mode, finds that efficiency all has lifting,
Such as inventor through overtesting find the embodiment of the present invention heating and air conditioner (set specified refrigerating capacity as
2.6kw, is set as 9.2% by the delivery space ratio of the second cylinder and the first cylinder) and existing identical work
Heating and air conditioner under condition is compared, and efficiency improves 7.3%.
Controlling party below with reference to Fig. 1-Fig. 4 detailed description heating and air conditioner according to embodiments of the present invention
Method, wherein heating and air conditioner is the heating and air conditioner according to the above embodiment of the present invention.
The control method of heating and air conditioner according to embodiments of the present invention, comprises the steps: refrigeration or system
Duplex cylinder compressor is adjusted according to the compressor operation parameters detected and/or outdoor environment temperature when heat is run
Running frequency is to meeting condition, and wherein compressor operation parameters includes running current, pressure at expulsion, exhaust temperature
At least one in degree.In other words, according to the testing result adjustment to detection object when refrigeration or heating operation
The running frequency of duplex cylinder compressor, wherein detection object include outdoor environment temperature, the delivery temperature of exhaust outlet,
The pressure at expulsion of exhaust outlet, duplex cylinder compressor running current at least one.
When the running frequency of duplex cylinder compressor adjusts to after meeting condition, again can detect after running the n second
Compressor operation parameters and/or outdoor environment temperature, then adjust pressure according to the testing result again detected
The running frequency of contracting machine, so repeats.Certainly repeat condition is not limited to this, such as, can receive user
Operational order after, detection compressor operation parameters and/or outdoor environment temperature again, then according to again
The testing result detected adjusts the running frequency of compressor.In other words, when freezing or heating, in compression
After the running frequency of machine meets condition, the n second can run or after receiving the operation signal of user,
Again detection compressor operation parameters and/or outdoor environment temperature, then adjusts according to testing result and runs frequency
Rate, so repeats.
In the concrete example of the present invention, during heating and air conditioner is run, if be detected that user
Shutdown command or indoor environment temperature reach design temperature, and compressor is out of service.
The control method of heating and air conditioner according to embodiments of the present invention, by running according to inspection
Survey result and adjust the running frequency of compressor, such that it is able to let the system operate in suitable parameter area, carry
High air-conditioner reliability of operation.
In some embodiments of the invention, multiple different delivery temperature is first preset interval, multiple exhausts
The regulating command of the running frequency that temperature range is corresponding is different, and then detection delivery temperature basis detect
The regulating command that the delivery temperature interval at delivery temperature place is corresponding regulates running frequency.Wherein regulating command can
To include frequency reducing, raising frequency, holding frequency, to shut down, release the instruction such as frequency limit.Thus arranged by detection
Temperature adjusts the running frequency of compressor, can the running status of direct reaction system, it is ensured that system fortune
Row, in suitable parameter area, improves air-conditioner reliability of operation further.Need to illustrate,
The running frequency that releasing frequency limit refers to compressor is unrestricted, it is not necessary to adjust the operation frequency of compressor
Rate.
Such as heating and air conditioner start refrigerating operaton, in running detect delivery temperature TP, set with Under several regulating commands:115 DEG C≤TP, shut down; 110 DEG C≤TP < 115 DEG C, be downconverted to TP < 110 DEG C; 105 DEG C≤TP < 110 DEG C, frequency keeps; TP < 105 DEG C, release frequency limit.Then according to actually detected Delivery temperature TP arrived performs corresponding regulating command, again detects TP after regulation completes, if met Regulation just terminates to judge, after running the n second, again detects delivery temperature TP, repeats to judge.Run n While Miao, if be detected that user's shutdown command or design temperature reach, terminate to run.
In some embodiments of the invention, preset that multiple outdoor temperatures are interval, heat stoppage protection electric current and
Refrigeration stoppage protection electric current, the corresponding different limit frequency protective current in multiple outdoor temperature intervals.First sensing chamber
External environment temperature, then obtains correspondence according to the outdoor temperature interval at the outdoor environment temperature place detected
Limit frequency protective current, adjust running frequency so that actually detected to running current reach to limit accordingly frequency protection
Electric current, the most directly shuts down when the running current detected the most when cooling is more than refrigeration stoppage protection electric current；
The running current detected when heating the most directly is shut down more than when heating stoppage protection electric current.
Specifically, during refrigeration, the corresponding relation of multiple outdoor temperatures interval and corresponding limit frequency protective current is permissible
As follows: as T4 ＞ 50.5 DEG C, limit frequency protective current is CL5；As 49.5 DEG C >=T4 ＞ 45.5 DEG C
Time, limit frequency protective current is CL4；As 44.5 DEG C >=T4 ＞ 41 DEG C, limit frequency protective current is CL3；When
40 DEG C >=T4 ＞ 33 DEG C, limit frequency protective current is CL2；When 32 >=T4 DEG C, limit frequency protective current is CL1.
Wherein the concrete numerical value of CL5, CL4, CL3, CL2, CL1 and refrigeration stoppage protection electric current can be according to reality
Situation specifically limits, and does not limits at this.
The outdoor environment temperature T4 such as detected when refrigerating operaton is positioned at the interval 40 DEG C >=T4 of outdoor temperature
Time in ＞ 33 DEG C, then it represents that running current does not allow more than limit frequency protective current CL2, if it does, will fall
Frequency to running current is less than limit frequency protective current CL2.
When heating, the interval and corresponding corresponding relation limiting protective current frequently of multiple outdoor temperatures can institute as follows
Showing: as T4 ＞ 15 DEG C, limit frequency protective current is HL5；When 14 DEG C of ＞ T4 >=10 DEG C, limit frequency protection
Electric current is HL4；When 9 DEG C of ＞ T4 >=6 DEG C, limit frequency protective current is HL3；When 5 DEG C of ＞ T4 >=-19 DEG C,
Limit frequency protective current is HL2；As-20 DEG C of ＞ T4, limit frequency protective current is HL1.Wherein HL5, HL4,
HL3, HL2, HL1 and heat the concrete numerical value of stoppage protection electric current and specifically can limit according to actual conditions,
Do not limit at this.
The outdoor environment temperature T4 such as detected when heating operation is positioned at the interval 9 DEG C of ＞ T4 of outdoor temperature
When >=6 DEG C, then it represents that running current does not allow more than limit frequency protective current HL3, if it does, by frequency reducing
To running current less than limit frequency protective current HL3.
In some embodiments of the invention, multiple outdoor temperature can be preset interval, multiple outdoor temperature districts
Between corresponding different setting running frequency, according to the outdoor temperature at the actually detected outdoor environment temperature place arrived
Interval corresponding setting running frequency adjusts the running frequency of compressor.
In some embodiments of the invention, multiple different pressure at expulsion is first preset interval, multiple exhausts
The regulating command of the running frequency that pressure range is corresponding is different, and then detection pressure at expulsion basis detect
The regulating command that the pressure at expulsion interval at pressure at expulsion place is corresponding regulates running frequency.Wherein regulating command can
To include frequency reducing, raising frequency, holding frequency, to shut down, release the instruction such as frequency limit.Thus arranged by detection
Atmospheric pressure adjusts the running frequency of compressor, can the running status of direct reaction system, it is ensured that system fortune
Row, in suitable parameter area, improves air-conditioner reliability of operation further.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on "
Or D score can be that the first and second features directly contact, or the first and second features are by middle matchmaker
Jie's mediate contact.And, fisrt feature second feature " on ", " top " and " above "
Fisrt feature is directly over second feature or oblique upper, or is merely representative of fisrt feature level height
Higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible
Be fisrt feature immediately below second feature or obliquely downward, or it is little to be merely representative of fisrt feature level height
In second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ",
It is concrete that the description of " concrete example " or " some examples " etc. means to combine this embodiment or example describes
Feature, structure, material or feature are contained at least one embodiment or the example of the present invention.In this theory
In bright book, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And,
Describe specific features, structure, material or feature can with in one or more embodiments in office or example with
Suitably mode combines.Additionally, in the case of the most conflicting, those skilled in the art can be by this
The feature of different embodiments described in specification or example and different embodiment or example be combined and
Combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment
It is exemplary, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art is the present invention's
In the range of above-described embodiment can be changed, revise, replace and modification.
Claims (8)
1. a heating and air conditioner, it is characterised in that including:
Duplex cylinder compressor, described duplex cylinder compressor includes housing, the first cylinder, the second cylinder, the first liquid storage
Device and the second reservoir, described housing is provided with exhaust outlet, described first cylinder and described second cylinder respectively
Being located in described housing, described first reservoir and described second reservoir are located at outside described housing, and described
The air entry of one cylinder connects with described first reservoir, the air entry of described second cylinder and described second storage
Liquid device connects, and the span of the delivery space ratio of described second cylinder and described first cylinder is
1%～10%；
Commutation assembly, described commutation assembly includes the first valve port to the 4th valve port, described first valve port and second
One of them connection in valve port and the 3rd valve port, described 4th valve port and described second valve port and the described 3rd
Another connection in valve port, described first valve port is connected with described exhaust outlet, and described 4th valve port is with described
First reservoir is connected；
Outdoor heat exchanger and indoor heat exchanger, the first end of described outdoor heat exchanger and described second valve port phase
Even, the first end of described indoor heat exchanger is connected with described 3rd valve port；
Gas-liquid separator, described gas-liquid separator includes gas vent, first interface and the second interface, described
Gas vent is connected with described second reservoir, the second end phase of described first interface and described outdoor heat exchanger
Even, described second interface is connected with the second end of described indoor heat exchanger, described first interface and described outdoor
The first throttle element of fixing aperture, described second interface and described indoor heat exchanger it is in series with between heat exchanger
Between be in series with the second section fluid element of fixing aperture.
Heating and air conditioner the most according to claim 1, it is characterised in that described gas vent and
It is in series with magnetic valve between described second reservoir.
Heating and air conditioner the most according to claim 1, it is characterised in that described gas-liquid separator
The span of volume be 100mL-500mL.
4. according to the heating and air conditioner according to any one of claim 1-3, it is characterised in that described
The volume of the first reservoir is more than the volume of described second reservoir.
5. a control method for heating and air conditioner as claimed in one of claims 1-4, its feature
Be, comprise the steps: refrigeration or during heating operation according to the compressor operation parameters detected and/or
The running frequency of the outdoor environment temperature described duplex cylinder compressor of adjustment is to meeting condition, and wherein said compressor is transported
Line parameter includes at least one in running current, pressure at expulsion, delivery temperature.
The control method of heating and air conditioner the most according to claim 5, it is characterised in that preset
Multiple different delivery temperatures are interval, the regulating command of the running frequency that the plurality of delivery temperature interval is corresponding
Difference, detection delivery temperature is also according to the regulation that the delivery temperature interval at the delivery temperature place detected is corresponding
Instruction regulates described running frequency.
The control method of heating and air conditioner the most according to claim 5, it is characterised in that preset
Multiple outdoor temperatures are interval, heat stoppage protection electric current and refrigeration stoppage protection electric current, multiple outdoor temperature districts
Between corresponding different limit frequency protective current, first detect outdoor environment temperature, then according to detect
The outdoor temperature interval at outdoor environment temperature place obtains the limit frequency protective current of correspondence, adjusts described operation frequently
Rate so that actually detected to running current reach corresponding described limit frequency protective current, examine the most when cooling
The most directly shut down when the described running current measured is more than described refrigeration stoppage protection electric current；Detect when heating
To described running current be more than described in heat stoppage protection electric current time the most directly shut down.
The control method of heating and air conditioner the most according to claim 5, it is characterised in that preset
Multiple different pressures at expulsion are interval, the regulating command of the running frequency that the plurality of pressure at expulsion interval is corresponding
Difference, detection pressure at expulsion is also according to the regulation that the pressure at expulsion interval at the pressure at expulsion place detected is corresponding
Instruction regulates described running frequency.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281558.0A CN105928239A (en) | 2016-04-29 | 2016-04-29 | Cooling and heating type air conditioner and control method thereof |
| PCT/CN2016/087936 WO2017185517A1 (en) | 2016-04-29 | 2016-06-30 | Cooling and heating air conditioner, cooling-only air conditioner, and control method for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281558.0A CN105928239A (en) | 2016-04-29 | 2016-04-29 | Cooling and heating type air conditioner and control method thereof |
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| CN105928239A true CN105928239A (en) | 2016-09-07 |
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ID=56836904
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610281558.0A Pending CN105928239A (en) | 2016-04-29 | 2016-04-29 | Cooling and heating type air conditioner and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106765885A (en) * | 2016-11-29 | 2017-05-31 | 广州华凌制冷设备有限公司 | Duplex cylinder compressor air-conditioner and its refrigerating method |
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