CN105758035A - Air conditioning system and control method thereof - Google Patents
Air conditioning system and control method thereof Download PDFInfo
- Publication number
- CN105758035A CN105758035A CN201610210434.3A CN201610210434A CN105758035A CN 105758035 A CN105758035 A CN 105758035A CN 201610210434 A CN201610210434 A CN 201610210434A CN 105758035 A CN105758035 A CN 105758035A
- Authority
- CN
- China
- Prior art keywords
- valve port
- air
- valve
- conditioning system
- air conditioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioning system and a control method thereof. The air conditioning system comprises an enhanced vapor injection compressor, a reversing component, two heat exchangers, a flash evaporator and a control device. The enhanced vapor injection compressor comprises a shell, a first-stage compression component and a second-stage compression component. The shell is provided with an exhaust port, an air supply port and two air suction ports, the two air suction ports are connected with air suction passages of the first-stage compression component and the second-stage compression component respectively, and an exhaust passage of the first-stage compression component is connected with the air suction passage of the second-stage compression component. A control valve is serially connected between each air suction port and a fourth valve port of the reversing component. The control device is connected with the two control valves to control operation conditions of the two control valves. The air conditioning system has the advantages that a dual-stage compression mode is adopted in medium and high frequencies to increase refrigeration and heating speeds; a single-stage compression mode is adopted in low frequency, and accordingly energy saving and comfort are realized.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, especially relate to the control method of a kind of air conditioning system and air conditioning system.
Background technology
Along with growth in the living standard, people are also more and more higher to the requirement of domestic air conditioning.Such as require powerful to freeze during domestic air conditioning not only high temperature, can also powerful heat when low temperature, but also want energy saving etc..Common convertible frequency air-conditioner, owing to cost reason majority adopts single-stage compressor, due to rotor single load bearing, vibration and noise are all relatively larger, and high-temperature refrigeration and low-temperature heating are it cannot be guaranteed that special user's demand；According to common double-stage compressor, under low-frequency operation, system stability is too poor.
Summary of the invention
It is contemplated that at least solve one of technical problem of existence in prior art.For this, the invention reside in a kind of air conditioning system of proposition, described air conditioning system can the output of big ability, high energy efficiency even running at low frequency under medium-high frequency.
The present invention also proposes the control method of a kind of above-mentioned air conditioning system.
Air conditioning system according to the present invention, including: air injection enthalpy-increasing compressor, described air injection enthalpy-increasing compressor includes housing, first order compression assembly and second level compression assembly, described housing is provided with air vent, gas supplementing opening and two air entries, said two air entry is connected with the air intake passage of described first order compression assembly and described second level compression assembly respectively, and the exhaust passage of described first order compression assembly is connected with the air intake passage of described second level compression assembly；Commutation assembly, described commutation assembly has the first valve port to the 4th valve port, one of them connection in described first valve port and the second valve port and the 3rd valve port, described 4th valve port connects with another in described second valve port and described 3rd valve port, described first valve port is connected with described air vent, described 4th valve port and two air entries are connected, and are in series with control valve between each described air entry and described 4th valve port；Two heat exchangers, the first end of said two heat exchanger is connected with described second valve port and described 3rd valve port respectively；Flash vessel, described flash vessel has gas outlet and two gateways, described gas outlet is connected with described gas supplementing opening, and said two gateway is connected with the second end of said two heat exchanger respectively, is in series with restricting element between each described gateway and corresponding described heat exchanger；Control device, described control device and two connected duties to control two described control valves of described control valves.
Air conditioning system according to the present invention, adopts Two-stage Compression air injection enthalpy-increasing operational mode in medium-high frequency system, especially at superhigh temperature and ultralow temperature, realizes the output of big ability during high compression ratio, improves cooling and warming speed；The automatic switchover single stage compress air injection enthalpy-increasing operational mode when low frequency, not only vibrates little, and realizes low-power, when air conditioner load is less, can realize not shutting down work, keep the stability of temperature, and temperature difference fluctuation is little, energy-conservation, comfortable.
Preferably, said two control valve is electromagnetic valve.
Alternatively, described commutation assembly is cross valve.
Alternatively, each described restricting element is electric expansion valve.
In some embodiments of the invention, described control device controls the duty of two described control valves according to the running frequency of described air injection enthalpy-increasing compressor.
The control method of the air conditioning system according to the present invention, comprises the steps:
When the running frequency f of described air injection enthalpy-increasing compressor is more than switching frequency F1, the described air entry controlling to be connected with described first order compression assembly connects with described 4th valve port and blocks another air entry and described 4th valve port, it is achieved Two-stage Compression；
When the running frequency f of described air injection enthalpy-increasing compressor is less than switching frequency F1, the described air entry controlling to be connected with described second level compression assembly connects with described 4th valve port and blocks another air entry and described 4th valve port, it is achieved single stage compress；Wherein switching frequency is frequency values when described air injection enthalpy-increasing compressor Two-stage Compression and single stage compress switching.
Further, the span of described switching frequency F1 is 25Hz～35Hz.
The additional aspect of the present invention and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram when refrigeration mode of the air conditioning system according to embodiments of the present invention；
Fig. 2 is the schematic diagram when heating mode of the air conditioning system according to embodiments of the present invention；
Fig. 3 is the control flow chart of the control method of air conditioning system according to embodiments of the present invention.
Accompanying drawing labelling:
Air conditioning system 100,
Air injection enthalpy-increasing compressor 1, air vent a, gas supplementing opening b, the first air entry c, the second air entry d,
Reservoir 11, gas returning port n,
Commutation assembly 2, the first valve port h, the second valve port i, the 3rd valve port j, the 4th valve port k,
First controls valve 31, and second controls valve 32,
Outdoor heat exchanger 4, indoor heat exchanger 5,
Flash vessel 6, gas outlet r, the first gateway s, the second gateway t,
First throttle element 71, second section fluid element 72.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.In order to simplify disclosure of the invention, hereinafter parts and setting to specific examples are described.Certainly, they are only merely illustrative, and are not intended to the restriction present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.This repetition is for purposes of simplicity and clarity, the relation between itself not indicating discussed various embodiment and/or arranging.Additionally, the example of the various specific technique that the invention provides and material, but those of ordinary skill in the art are it can be appreciated that the use of the property of can be applicable to of other techniques and/or other materials.
Below with reference to Fig. 1-Fig. 3, air conditioning system 100 according to embodiments of the present invention is described.
As it is shown in figure 1, air conditioning system 100 according to embodiments of the present invention, including: air injection enthalpy-increasing compressor 1, commutation 2, two heat exchangers of assembly (outdoor heat exchanger 4 as shown in Figure 1 and indoor heat exchanger 5), flash vessel 6 and control device.
Specifically, air injection enthalpy-increasing compressor 1 includes housing, first order compression assembly and second level compression assembly, housing is provided with air vent a, gas supplementing opening b and two air entries (such as the first air entry c shown in Fig. 1 and the second air entry d), two air entries are connected with the air intake passage of first order compression assembly and second level compression assembly respectively, and the exhaust passage of first order compression assembly is connected with the air intake passage of second level compression assembly.
As shown in Figure 1, air entry includes the first air entry c and the second air entry d, first air entry c is connected with the air intake passage of first order compression assembly, second air entry d is connected with the air intake passage of second level compression assembly, and the exhaust passage of the first compression assembly is connected with the air intake passage of the second compression assembly.After coolant enters air injection enthalpy-increasing compressor 1 from the first air entry c, coolant sequentially passes through first order compression assembly and second level compression assembly two stages of compression, i.e. Two-stage Compression；When coolant enters air injection enthalpy-increasing compressor 1 from the second air entry d, coolant only compresses at second level compression assembly, i.e. single stage compress.It is to say, air injection enthalpy-increasing compressor 1 has Two-stage Compression pattern and single stage compress pattern, and air injection enthalpy-increasing compressor 1 can switch between above two pattern.It is understood that the air injection enthalpy-increasing compressor 1 of the present invention can adopt the existing compressor with Two-stage Compression pattern and single stage compress pattern, the concrete contraction principle of coolant has been prior art by compressor, is just not described in detail here.
Commutation assembly 2 has the first valve port h, the second valve port i, the 3rd valve port j and the four valve port k, one of them connection in first valve port h and the second valve port i and the 3rd valve port j, another connection in 4th valve port k and the second valve port i and the 3rd valve port j, that is, when the first valve port h and the second valve port i connects, 4th valve port k then connects with the 3rd valve port j, and when the first valve port h and the three valve port j connection, the 4th valve port k then connects with the second valve port i.
First valve port h is connected with air vent a, 4th valve port k and two air entry is connected, and is in series with control valve, thus between each air entry and the 4th valve port k, coolant can select an air entry from which to return in air injection enthalpy-increasing compressor 1 by control valve, it is achieved single stage compress or Two-stage Compression.As shown in Figure 1, the first control valve 31 it is serially connected with between 4th valve port k and the first air entry c, the second control valve 32 it is serially connected with between 4th valve port k and the second air entry d, coolant can control valve 31 and the first air entry c entrance air injection enthalpy-increasing compressor 1 from the 4th valve port k of commutation assembly 2 through first, carries out Two-stage Compression；Coolant can also control valve 32 and the second air entry d entrance air injection enthalpy-increasing compressor 1 from the 4th valve port k of commutation assembly 2 through second, carries out single stage compress.The coolant of the High Temperature High Pressure formed after compression in cylinder, is expelled to the first valve port h from air vent a.
Preferably, commutation assembly 2 is cross valve, when air conditioning system 100 adopts refrigeration mode, first valve port h and the second valve port i connection, 3rd valve port j and the four valve port k connection, when air conditioning system 100 adopts heating mode, the first valve port h and the three valve port j connection, the second valve port i and the four valve port k connection.Certainly, the invention is not restricted to this, commutation assembly 2 can also be formed as other elements, as long as having the first valve port h to the 4th valve port k and can realizing commutating.
First end of two heat exchangers (the such as outdoor heat exchanger 4 shown in Fig. 1 and indoor heat exchanger 5) is connected with the second valve port i and the 3rd valve port j respectively.As it is shown in figure 1, the first end 4a and the second valve port i of outdoor heat exchanger 4 are connected, the first end 5a and the three valve port j of indoor heat exchanger 5 is connected.
Flash vessel 6 has gas outlet r and two gateways (such as the first gateway s shown in Fig. 1 and the second gateway t), gas outlet r is connected with gas supplementing opening b, so, can return to air injection enthalpy-increasing compressor 1 from gas supplementing opening b from the isolated steam state coolant of flash vessel 6 and be compressed, to realize air injection enthalpy-increasing.
Two gateways are connected with the second end of two heat exchangers respectively, are in series with restricting element (such as the first throttle element 71 shown in Fig. 1 and second section fluid element 72) between each gateway and corresponding heat exchanger.As shown in Figure 1, first gateway s is connected with the second end 4b of outdoor heat exchanger 4, it is serially connected with first throttle element 71 between first gateway s and outdoor heat exchanger 4, second gateway t is connected with the second end 5b of indoor heat exchanger 5, and second be serially connected with second section fluid element 72 between gateway t and indoor heat exchanger 5, wherein, first throttle element 71 and second section fluid element 72 all play the effect of reducing pressure by regulating flow.
Preferably, each restricting element can be electric expansion valve.Certainly, the invention is not restricted to this, restricting element can also be the structures such as the combination of capillary tube or capillary tube and electric expansion valve, as long as the effect of reducing pressure by regulating flow can be played.
Control device and two connected duties to control two control valves of control valves, and then control the duty of air injection enthalpy-increasing compressor 1.Such as, when control device control the first control valve 31 is opened and the second control valve 32 is cut out, air injection enthalpy-increasing compressor 1 is Two-stage Compression pattern；When control device control the first control valve 31 cuts out and the second control valve 32 opens, air injection enthalpy-increasing compressor 1 is single stage compress pattern.
Air conditioning system 100 according to embodiments of the present invention, it is possible to adopt Two-stage Compression air injection enthalpy-increasing operational mode when medium-high frequency, especially at superhigh temperature and ultralow temperature, realizes the output of big ability, improves cooling and warming speed during high compression ratio；The automatic switchover single stage compress air injection enthalpy-increasing operational mode when low frequency, not only vibrates little, and realizes low-power, and when air conditioning system 100 load is less, can realize not shutting down work, keeps the stability of temperature, and temperature difference fluctuation is little, energy-conservation, comfortable.
Preferably, two control valves can be all electromagnetic valve, thus can improve the control control accuracy of valve, safety and reliability.
In one embodiment of the invention, control device and can control the duty of two control valves according to the running frequency of air injection enthalpy-increasing compressor 1.Certainly, the invention is not restricted to this, control device and can also control the duty of two control valves according to indoor environment temperature.
The control method of air conditioning system 100 according to embodiments of the present invention, described control method comprises the steps: when the running frequency f of air injection enthalpy-increasing compressor 1 is more than switching frequency F1, the air entry (the first air entry c shown in Fig. 1) controlling to be connected with first order compression assembly connects with the 4th valve port k and blocks another air entry (the second air entry d shown in Fig. 1) and the 4th valve port k, it is achieved Two-stage Compression.
When the running frequency f of air injection enthalpy-increasing compressor 1 is less than switching frequency F1, the air entry (the second air entry d shown in Fig. 1) controlling to be connected with second level compression assembly connects with the 4th valve port k and blocks another air entry (the first air entry c shown in Fig. 1) and the 4th valve port k, it is achieved single stage compress；Wherein switching frequency is frequency values when air injection enthalpy-increasing compressor 1 Two-stage Compression and single stage compress switching.Hereby it is achieved that the running frequency according to air injection enthalpy-increasing compressor 1, single Two-stage Compression pattern of switching air injection enthalpy-increasing compressor 1: Two-stage Compression during medium-high frequency, single stage compress during low frequency.
The control method of the air conditioning system 100 according to the present invention, can switch between single stage compress pattern and Two-stage Compression pattern according to the running frequency of air conditioning system 100, when medium-high frequency, system adopts Two-stage Compression mode operation, it is achieved the output of big ability, improves cooling and warming speed；Single stage compress mode operation is switched, it is achieved low-power, little energy consumption when low frequency, energy-conservation, comfortable.
Preferably, according to heating the feature cold with heat, and in conjunction with the efficiency curve characteristic of air injection enthalpy-increasing compressor 1, the span of switching frequency F1 can be 25Hz～35Hz.
Below with reference to Fig. 1-Fig. 3, the air conditioning system 100 according to one specific embodiment of the present invention is described.
With reference to Fig. 1, air conditioning system 100 includes air injection enthalpy-increasing compressor 1, commutation assembly 2, outdoor heat exchanger 4, indoor heat exchanger 5, flash vessel 6, first throttle element 71, second section fluid element the 72, first control valve the 31, second control valve 32 and controls device.Wherein, commutation assembly 2 is cross valve, first throttle element 71 and second section fluid element 72 are electric expansion valve, first control valve 31 and the second control valve 32 are electromagnetic valve, and control the duty of device running frequency f control the first control valve 31 according to air injection enthalpy-increasing compressor 1 and the second control valve 32.
Specifically, as it is shown in figure 1, air injection enthalpy-increasing compressor 1 includes housing, reservoir 11, first order compression assembly and second level compression assembly, housing is provided with air vent a, gas supplementing opening b, the first air entry c and the second air entry d, and reservoir 11 is provided with gas returning port n；Cross valve has the first valve port h, the second valve port i, the 3rd valve port j and the four valve port k, and flash vessel 6 has gas outlet r, the first gateway s and the second gateway t.
Wherein, the first air entry c connects with the air intake passage of first order compression assembly, and the second air entry d connects with the air intake passage of second level compression assembly, and the exhaust passage of first order compression assembly is connected with the air intake passage of second level compression assembly；First valve port h of cross valve is connected with air vent a；Second valve port i is connected with the first end 4a of outdoor heat exchanger 4, and the 3rd valve port j is connected with the first end 5a of indoor heat exchanger 5, and the 4th valve port k is connected with gas returning port n；It is serially connected with the first control valve 31 between reservoir 11 and the first air entry c, between reservoir 11 and the second air entry d, is serially connected with the second control valve 32；The gas outlet r of flash vessel 6 is connected with gas supplementing opening b, is serially connected with first throttle element 71 between the first gateway s and the second end 4b of outdoor heat exchanger 4, concatenates second section fluid element 72 between the second gateway t and the second end 5b of indoor heat exchanger 5.
As it is shown in figure 1, when air conditioning system 100 is refrigeration mode, the first valve port h and the second valve port i conducting of cross valve and the 4th valve port k and the 3rd valve port j turn on.
The flow direction of coolant is as follows: enter into condensation outdoor heat exchanger 4 from the air vent a of the air injection enthalpy-increasing compressor 1 High Temperature High Pressure coolant discharged through the first valve port h and the second valve port i of cross valve, coolant carries out the second end 4b of heat exchanger 4 outdoor after heat exchange in outdoor heat exchanger 4 and discharges with outdoor environment, the liquid phase coolant being then discharged out is through the reducing pressure by regulating flow of first throttle element 71, gas-liquid two-phase coolant after throttling enters flash vessel 6 from the first gateway s, and carries out gas-liquid separation in flash vessel 6.
From flash vessel 6, isolated steam state coolant is from gas outlet r through gas supplementing opening b, returns in air injection enthalpy-increasing compressor 1, discharges from the air vent a of air injection enthalpy-increasing compressor 1 and proceed circulation after overcompression.
From flash vessel 6, isolated liquid refrigerants flows out from the second gateway t, then coolant enters in indoor heat exchanger 5 after the reducing pressure by regulating flow of second section fluid element 72, coolant carries out heat exchange with indoor environment in indoor heat exchanger 5 and undergoes phase transition, and indoor environment is freezed, user is made to obtain cryogenic temperature and refrigerating capacity, the gas phase refrigerant that heat exchanger 5 is discharged indoor is through the 3rd valve port j and the four valve port k of cross valve, then enters reservoir 11 from gas returning port n, completes kind of refrigeration cycle.
As in figure 2 it is shown, when air conditioning system 100 is heating mode, the first valve port h and the three valve port j conducting of cross valve and the 4th valve port k and the second valve port i turn on.
The flow direction of coolant is as follows: from the air vent a of the air injection enthalpy-increasing compressor 1 high pressure gaseous coolant discharged, enter in indoor heat exchanger 5 through the first valve port h and the three valve port j of cross valve, the coolant of the High Temperature High Pressure in indoor heat exchanger 5 and indoor environment carry out phase-change heat-exchange, so that indoor environment is heated, the liquid phase coolant that heat exchanger 5 is discharged indoor carries out first time throttling through second section fluid element 72, gas-liquid two-phase mixing coolant after throttling enters in flash vessel 6, and coolant is carried out gas-liquid separation by flash vessel 6.
From flash vessel 6, isolated steam state coolant is from gas outlet r through gas supplementing opening b, returns in air injection enthalpy-increasing compressor 1, discharges from the air vent a of air injection enthalpy-increasing compressor 1 and proceed circulation after overcompression.
From flash vessel 6, isolated liquid refrigerants flows out from the first gateway s, enter into after first throttle element 71 second throttle blood pressure lowering in outdoor heat exchanger 4, after refrigerant evaporation heat exchange in outdoor heat exchanger 4, the second valve port i and the four valve port k through cross valve, enter reservoir 11 from gas returning port n, complete to heat circulation.
As it is shown on figure 3, air conditioning system 100 is in refrigeration with when heating, sets single twin-stage switching frequency of air injection enthalpy-increasing compressor 1 as F1, and the span of F1 is 25Hz～35Hz.
The actual motion frequency of detection air injection enthalpy-increasing compressor 1 is f, as f > F1, control device to control open the first control valve 31 and close the second control valve 32, now, reservoir 11 connects with the first air entry c and disconnects with the second air entry d, coolant controls valve 31 and the first air entry c entrance first order compression assembly compression through first, then it is compressed from the entrance second level, the exhaust passage compression assembly of first order compression assembly, High Temperature High Pressure coolant after compression is discharged from air vent a, and air injection enthalpy-increasing compressor 1 is Two-stage Compression pattern.
As f < F1, control device to control close the first control valve 31 and open the second control valve 32, now, reservoir 11 disconnects with the first air entry c and connects with the second air entry d, coolant controls valve 32 and the compression assembly compression of the second air entry d entrance second level through second, High Temperature High Pressure coolant after compression is discharged from air vent a, and air injection enthalpy-increasing compressor 1 is single stage compress operational mode.
Air conditioning system 100 according to embodiments of the present invention, Two-stage Compression pattern is used when altofrequency, realize fast-refrigerating or heat, when heating particularly in superhigh temperature refrigeration and ultralow temperature, heat pump performance is more powerful, improves the comfortableness used, and uses single stage compress pattern when low frequency, reduce output, reach energy-conservation purpose.
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, " interior ", " outward " be based on orientation shown in the drawings or position relationship; be for only for ease of the description present invention and simplifying and describe; rather than instruction or imply indication device 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 for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more these features.In describing the invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection, it is also possible to be communication；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention as the case may be.
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 intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in one or more embodiments in office or example in an appropriate manner.Additionally, when not conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out combining and combining by those skilled in the art.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principles of the invention and objective, the scope of the present invention is limited by claim and equivalent thereof.
Claims (7)
1. an air conditioning system, it is characterised in that including:
Air injection enthalpy-increasing compressor, described air injection enthalpy-increasing compressor includes housing, first order compression assembly and second level compression assembly, described housing is provided with air vent, gas supplementing opening and two air entries, said two air entry is connected with the air intake passage of described first order compression assembly and described second level compression assembly respectively, and the exhaust passage of described first order compression assembly is connected with the air intake passage of described second level compression assembly；
Commutation assembly, described commutation assembly has the first valve port to the 4th valve port, one of them connection in described first valve port and the second valve port and the 3rd valve port, described 4th valve port connects with another in described second valve port and described 3rd valve port, described first valve port is connected with described air vent, described 4th valve port and two air entries are connected, and are in series with control valve between each described air entry and described 4th valve port；
Two heat exchangers, the first end of said two heat exchanger is connected with described second valve port and described 3rd valve port respectively；
Flash vessel, described flash vessel has gas outlet and two gateways, described gas outlet is connected with described gas supplementing opening, and said two gateway is connected with the second end of said two heat exchanger respectively, is in series with restricting element between each described gateway and corresponding described heat exchanger；
Control device, described control device and two connected duties to control two described control valves of described control valves.
2. air conditioning system according to claim 1, it is characterised in that said two controls valve and is electromagnetic valve.
3. air conditioning system according to claim 1, it is characterised in that described commutation assembly is cross valve.
4. air conditioning system according to claim 1, it is characterised in that each described restricting element is electric expansion valve.
5. air conditioning system according to claim 1, it is characterised in that described control device controls the duty of two described control valves according to the running frequency of described air injection enthalpy-increasing compressor.
6. the control method of the air conditioning system according to any one of claim 1-5, it is characterised in that comprise the steps:
When the running frequency f of described air injection enthalpy-increasing compressor is more than switching frequency F1, the described air entry controlling to be connected with described first order compression assembly connects with described 4th valve port and blocks another air entry and described 4th valve port, it is achieved Two-stage Compression；
When the running frequency f of described air injection enthalpy-increasing compressor is less than switching frequency F1, the described air entry controlling to be connected with described second level compression assembly connects with described 4th valve port and blocks another air entry and described 4th valve port, it is achieved single stage compress；Wherein switching frequency is frequency values when described air injection enthalpy-increasing compressor Two-stage Compression and single stage compress switching.
7. the control method of air conditioning system according to claim 6, it is characterised in that the span of described switching frequency F1 is 25Hz～35Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210434.3A CN105758035A (en) | 2016-04-06 | 2016-04-06 | Air conditioning system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210434.3A CN105758035A (en) | 2016-04-06 | 2016-04-06 | Air conditioning system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105758035A true CN105758035A (en) | 2016-07-13 |
Family
ID=56334321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610210434.3A Pending CN105758035A (en) | 2016-04-06 | 2016-04-06 | Air conditioning system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105758035A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207418A (en) * | 2019-06-25 | 2019-09-06 | 珠海格力电器股份有限公司 | Heat pump system with double evaporation temperatures and control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6434960B1 (en) * | 2001-07-02 | 2002-08-20 | Carrier Corporation | Variable speed drive chiller system |
| JP2004020179A (en) * | 2002-06-14 | 2004-01-22 | Samsung Electronics Co Ltd | Air conditioning device and its control method |
| CN101055131A (en) * | 2007-04-28 | 2007-10-17 | 广东美的电器股份有限公司 | Output power adjustable air conditioner |
| CN102128511A (en) * | 2011-04-04 | 2011-07-20 | 刘雄 | Double heat source heat pump air-conditioning equipment |
| CN103968460A (en) * | 2014-05-16 | 2014-08-06 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN104215001A (en) * | 2014-07-10 | 2014-12-17 | 广东美的集团芜湖制冷设备有限公司 | Double-stage compressor air-conditioner system and control method thereof |
| CN205641629U (en) * | 2016-04-06 | 2016-10-12 | 广东美的制冷设备有限公司 | Air conditioning system |
-
2016
- 2016-04-06 CN CN201610210434.3A patent/CN105758035A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6434960B1 (en) * | 2001-07-02 | 2002-08-20 | Carrier Corporation | Variable speed drive chiller system |
| JP2004020179A (en) * | 2002-06-14 | 2004-01-22 | Samsung Electronics Co Ltd | Air conditioning device and its control method |
| CN101055131A (en) * | 2007-04-28 | 2007-10-17 | 广东美的电器股份有限公司 | Output power adjustable air conditioner |
| CN102128511A (en) * | 2011-04-04 | 2011-07-20 | 刘雄 | Double heat source heat pump air-conditioning equipment |
| CN103968460A (en) * | 2014-05-16 | 2014-08-06 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN104215001A (en) * | 2014-07-10 | 2014-12-17 | 广东美的集团芜湖制冷设备有限公司 | Double-stage compressor air-conditioner system and control method thereof |
| CN205641629U (en) * | 2016-04-06 | 2016-10-12 | 广东美的制冷设备有限公司 | Air conditioning system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207418A (en) * | 2019-06-25 | 2019-09-06 | 珠海格力电器股份有限公司 | Heat pump system with double evaporation temperatures and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105758034A (en) | Air conditioning system and control method thereof | |
| CN102109249B (en) | Compressor with vapor injection system | |
| CN105890081A (en) | Air conditioner system and control method of air conditioner system | |
| CN103090470B (en) | Air conditioner | |
| CN101545689B (en) | Air conditioning apparatus | |
| CN105757798A (en) | Air-conditioning system and control method of air-conditioning system | |
| CN105627615A (en) | Air conditioner system and control method thereof | |
| CN105423656A (en) | Refrigeration system and control method thereof | |
| WO2024198359A1 (en) | Ultralow-temperature single-stage and double-stage hybrid air source heat pump unit | |
| CN205641699U (en) | Air conditioning system | |
| CN105698426A (en) | Air conditioning system and control method of air conditioning system | |
| CN110500804B (en) | Heat pump system and control method | |
| US7574872B2 (en) | Capacity-variable air conditioner | |
| CN111928509A (en) | Refrigerator refrigerating system, control method thereof and refrigerator | |
| WO2021098552A1 (en) | Heat pump type air-conditioning system and control method therefor | |
| CN2705759Y (en) | Mixed cold type multiple temperature zone refrigerator | |
| CN205641629U (en) | Air conditioning system | |
| CN205174908U (en) | Air conditioning system | |
| CN208544085U (en) | A kind of energy-saving low-temperature heat pump air conditioner control system for electric coach | |
| CN205536650U (en) | Air conditioning system | |
| CN105758035A (en) | Air conditioning system and control method thereof | |
| CN116576515A (en) | Solar enhanced jet type double-temperature heat source heat pump air conditioning system and refrigeration equipment | |
| CN115164440A (en) | Refrigerating system and refrigerating equipment | |
| CN205939504U (en) | Power heat pipe all -in -one air conditioning system | |
| CN205033907U (en) | Refrigerator car air conditioning system and refrigerator car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |
|
| RJ01 | Rejection of invention patent application after publication |