CN104976813A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN104976813A
CN104976813A CN201410136802.5A CN201410136802A CN104976813A CN 104976813 A CN104976813 A CN 104976813A CN 201410136802 A CN201410136802 A CN 201410136802A CN 104976813 A CN104976813 A CN 104976813A
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CN
China
Prior art keywords
valve
air
control valve
conditioner
outlet
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.)
Granted
Application number
CN201410136802.5A
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Chinese (zh)
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CN104976813B (en
Inventor
李洪生
许永锋
梁伯启
吴孔祥
卢健洪
肖俊钊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Priority to CN201410136802.5A priority Critical patent/CN104976813B/en
Publication of CN104976813A publication Critical patent/CN104976813A/en
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Publication of CN104976813B publication Critical patent/CN104976813B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves

Abstract

The invention discloses an air conditioner, which comprises a compressor, a four-way valve, an outdoor heat exchanger, a first throttling element, an indoor unit assembly and an ejector, wherein the compressor is provided with an exhaust port, a return air inlet and a jet orifice; the ejector is provided with a first inlet, a second inlet and an outlet; the first inlet is connected with the exhaust port by a first control valve; the second inlet is connected with the second end of the first throttling element by a second control valve; the outlet is connected with the jet orifice; and when the air conditioner is operated in a low-temperature heating status, the first control valve and the second control valve are opened, refrigerants which enter the ejector from the first inlet and the second inlet are mixed and are discharged from the outlet, and the refrigerants return to the compressor through the jet orifice. According to the air conditioner provided by the embodiment of the invention, the ejector can heat middle supplementary air by virtue of high-temperature exhaust air, so that the degree of superheat of the middle supplementary air is improved; and meanwhile, a part of loss due to pressure reduction of high-pressure fluid can be recycled by the ejector, so that the capacity and the energy efficiency of the air conditioner can be improved.

Description

Air-conditioner
Technical field
The present invention relates to refrigerating field, especially relate to a kind of air-conditioner.
Background technology
It is lower that air-conditioning system in correlation technique often also exists ambient temperature, the situation that heating effect is poorer, and in this and reality, ambient temperature is lower, and the demand that heating effect has required is not inconsistent.In order to improve air-conditioning system low-temperature heating effect, compressor air injection enthalpy-increasing technology is applied in air-conditioning system, and the fluid of the puff prot of compressor is often from the refrigerant of system mesolow, on the one hand easily cause suction gas band liquid in the middle of compressor due to degree of superheat deficiency, cause Wet Compression.On the other hand, the generation source of pressure of inspiration(Pi) comes from system throttles, more complicated to the control of intermediate pressure, and directly throttling brings certain energy loss.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose a kind of air-conditioner, not only can promote the degree of superheat of second vapor injection, and reclaims the loss of a part of high pressure fluid reduction.
According to the air-conditioner of the embodiment of the present invention, comprising: compressor, described compressor has exhaust outlet, gas returning port and jet; Cross valve, described cross valve comprises first to fourth valve port, and described first valve port is connected with described exhaust outlet, and described 4th valve port is connected with described gas returning port; Outdoor heat exchanger, the first end of described outdoor heat exchanger is connected with described second valve port; First throttle element, the first end of described first throttle element is connected with the second end of described outdoor heat exchanger; Indoor set assembly, described indoor set assembly comprises an indoor heat exchanger and second section fluid element, the first end of described second section fluid element is connected with the second end of described first throttle element, and described indoor heat exchanger is connected with described 3rd valve port with the second end of described second section fluid element respectively; Injector, described injector is provided with the first import, the second import and outlet, described first import is connected with described exhaust outlet by the first control valve, described second import is connected with the second end of described first throttle element by the second control valve, described outlet is connected with described jet, wherein when air-conditioner is in low-temperature heating operation, described first control valve and the second control valve are opened, and discharge and got back in described compressor by described jet from described first import and described second import after entering into the refrigerant mixing in described injector from described outlet.
According to the air-conditioner of the embodiment of the present invention, when low-temperature heating runs, when air-conditioner needs to carry out second vapor injection, the first control valve can be controlled and the second control valve is opened, the refrigerant of the HTHP of discharging from the exhaust outlet of compressor and discharge low temperature liquid refrigerant low pressure from second section fluid element and enter into injector, injector not only can utilize high-temperature exhaust air to heat second vapor injection, to promote the degree of superheat of second vapor injection, injector can also reclaim the loss that a part of high pressure fluid reduces simultaneously, thus by being provided with the first control valve, second control valve and injector, the ability efficiency of air-conditioner can be improved.
In addition, air-conditioner according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, air-conditioner also comprises the 3rd control valve, and described outlet is connected with described gas returning port by described 3rd control valve.
Alternatively, described 3rd control valve is magnetic valve.
In specific embodiments more of the present invention, described indoor set assembly is at least two.
Particularly, the described second section fluid element in each described indoor set assembly is for regulating cold medium flux and carrying out reducing pressure by regulating flow to refrigerant.
Alternatively, described second section fluid element is electric expansion valve or heating power expansion valve.
In further embodiment of the present invention, air-conditioner also comprises gas-liquid separator, and described gas-liquid separator comprises entrance and gas outlet, and described entrance is connected with described 4th valve port with described outlet, and described gas outlet is connected with described gas returning port.Thus air-conditioner can be avoided to occur liquid hit phenomenon.
In further embodiment of the present invention, air-conditioner also comprises gas-liquid separator, described gas-liquid separator comprises entrance and gas outlet, described entrance is connected with described 4th valve port and is connected with the described jet of described injector and described compressor by described 3rd control valve, and described gas outlet is connected with the gas returning port of described compressor.
Alternatively, described first throttle element is electric expansion valve, restricting orifice, capillary or heating power expansion valve.
Alternatively, described first control valve and described second control valve are respectively magnetic valve.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the air-conditioner according to the embodiment of the present invention.
Reference numeral:
Air-conditioner 100,
Compressor 1, exhaust outlet a, gas returning port b, jet f,
Cross valve 2, first valve port D, the second valve port C, the 3rd valve port E, the 4th valve port S,
Outdoor heat exchanger 3,
First throttle element 4,
Indoor set assembly 5, indoor heat exchanger 50, second section fluid element 51,
Injector 6, first import g, the second import h, outlet i,
First control valve 7, second control valve 8, the 3rd control valve 9,
Gas-liquid separator 10, entrance m, gas outlet n
Detailed description of the invention
Be 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 element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is 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, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Describe according to the air-conditioner 100 of the embodiment of the present invention below with reference to Fig. 1, this air-conditioner 100 is air conditioner, namely air-conditioner 100 can heating operation also can refrigerating operaton.
As shown in Figure 1, air-conditioner 100 according to the embodiment of the present invention comprises: compressor 1, cross valve 2, outdoor heat exchanger 3, first throttle element 4, indoor set assembly 5 and injector 6, wherein, compressor 1 has exhaust outlet a, gas returning port b and jet f, particularly, compressor 1 is injecting type compressor, compressor 1 also comprises the elements such as cylinder, the direct conducting of intermediate pressure section of the compression chamber in jet f and cylinder, refrigerant flow in compression chamber by jet f direct current, and therefore the gas pressure at jet f place is greater than the gas pressure at gas returning port b place.Wherein, need to be described, the structure and working principle etc. of injecting type compressor 1 is prior art, is just not described in detail here.
Cross valve 2 comprises the first valve port D, the second valve port C, the 3rd valve port E and the 4th valve port S, first valve port D is connected with exhaust outlet a, 4th valve port S is connected with gas returning port b, second valve port C is connected with the first end of outdoor heat exchanger 3,3rd valve port E is connected with indoor heat exchanger 50, now when air-conditioner 100 refrigerating operaton, first valve port D and the second valve port C conducting and the 3rd valve port E and the 4th valve port S conducting, when air-conditioner 100 heating operation, the first valve port D and the 3rd valve port E conducting and the second valve port C and the 4th valve port S conducting.Particularly, cross valve 2 is solenoid operated four-way valve.
The first end of first throttle element 4 is connected with the second end of outdoor heat exchanger 3, and first throttle element 4 mainly plays the effect refrigerant that heat exchanger 3 is discharged being carried out to reducing pressure by regulating flow outdoor.Particularly, first throttle element 4 is electric expansion valve, restricting orifice, capillary or heating power expansion valve etc.
Indoor set assembly 5 comprises an indoor heat exchanger 50 and second section fluid element 51, and the first end of second section fluid element 51 is connected with the second end of first throttle element 4, and indoor heat exchanger 50 is connected with the 3rd valve port E with the second end of second section fluid element 51 respectively.Specifically, indoor set assembly 5 is at least one, when indoor set assembly 5 is one, now air-conditioner 100 is monotroded machine system (i.e. a corresponding indoor heat exchanger 50 of outdoor heat exchanger 3), and now second section fluid element 51 can only have effect refrigerant being carried out to reducing pressure by regulating flow.When indoor set assembly 5 is at least two, now air-conditioner 100 is multiple on-line system (i.e. a corresponding multiple indoor heat exchanger 50 of outdoor heat exchanger 3), the flow now entering into the refrigerant of each indoor set assembly 5 all can regulate, in concrete example of the present invention, second section fluid element 51 in each indoor set assembly 5 is for regulating cold medium flux and carrying out reducing pressure by regulating flow to refrigerant, now alternatively, second section fluid element 51 is electric expansion valve or heating power expansion valve.
It is appreciated of course that, when air-conditioner 100 is multiple on-line system, second section fluid element 51 in each indoor set assembly 5 can only have effect refrigerant being carried out to reducing pressure by regulating flow, now should be provided with the control valve for regulating cold medium flux in each indoor set assembly 5.
Injector 6 is provided with the first import g, the second import h and outlet i, first import g is connected with exhaust outlet a by the first control valve 7, second import h is connected with the second end of first throttle element 4 by the second control valve 8, outlet i is connected with jet f, wherein when air-conditioner 100 is in low-temperature heating operation, first control valve 7 and the second control valve 8 are opened, and from outlet i discharge and by jet f are got back to compressor 1 in after entering into the refrigerant mixing in injector 6 from the first import g and the second import h.Wherein, need to be described, injector 6 can adopt injector of the prior art, and now the operation principle etc. of injector 6 is prior art, is just not described in detail here.
Specifically, when air-conditioner 100 is in (carrying out heating operation when outdoor environment temperature is low) when low-temperature heating runs, when needs carry out second vapor injection by jet f to compressor 1, now the first control valve 7 and the second control valve 8 are all in open mode, first valve port D of cross valve 2 and the 3rd valve port E conducting and the second valve port C and the 4th valve port S conducting, the circulation path of the refrigerant in air-conditioner 100 is as follows: the refrigerant of the HTHP of discharging from the exhaust outlet a of compressor 1 enters into indoor heat exchanger 50 by cross valve 2, escape and enter in second section fluid element 51 after the refrigerant of HTHP carries out heat exchange in indoor heat exchanger 50 and carry out reducing pressure by regulating flow, refrigerant after second section fluid element 51 reducing pressure by regulating flow is liquid cryogenic fluid in low pressure.
The refrigerant of discharging from second section fluid element 51 is divided into two parts, part refrigerant (being equivalent to second vapor injection) enters into injector 6 by the second control valve 8 and the second import h, and also enter into injector 6 by the first control valve 7 and the first import g from the refrigerant of a part of HTHP of exhaust outlet a discharge, the refrigerant now entering into the HTHP in injector 6 makes low pressure low temperature liquid refrigerant flash evapn be formed as gaseous coolant, and gaseous coolant is discharged from outlet i and got back in compressor 1 by jet f.Now injector 6 one aspect plays the effect of flash vessel, utilizes high-temperature exhaust air to heat to second vapor injection, to promote the degree of superheat of second vapor injection, utilizes the operation principle of injector 6 on the other hand, has reclaimed the loss that a part of high pressure fluid reduces.Thus improve the ability efficiency of air-conditioner 100.
Be drained in outdoor heat exchanger 3 after the reducing pressure by regulating flow of another part refrigerant by first throttle element 4 that second section fluid element 51 is discharged, be expelled back in compressor 1 by cross valve 2 and gas returning port b after refrigerant evaporates in outdoor heat exchanger 3.
It should be noted that, the acting in conjunction of first throttle element 4 and second section fluid element 51 can be passed through, regulate the refrigerant state (pressure, temperature) entering into the second control valve 8 of injector 6.During as freezed, based on first throttle element 4 throttling, second section fluid element 51 is auxiliary, but when if desired promoting the pressure of the second import h of injector 6, suitably can open large first throttle element 4, turn down second section fluid element 51.
Wherein, need to be described, the first control valve 7 and the second control valve 8 can be used for the flow regulating refrigerant, to adapt to the requirement of air-conditioner 100 middle inspiratory capacity (i.e. the return-air amount of jet f) and pressure of inspiration(Pi) under variable working condition condition.When inspiratory flow is larger in the middle of requiring in air-conditioner 100, large first control valve 7 and the second control valve 8 suitably can be opened.When pressure of inspiration(Pi) is larger in the middle of requiring in air-conditioner 100, suitably can opens large first control valve 7, turn down the second control valve 8.
What be certainly worth understanding is, when air-conditioner 100 is in low-temperature heating operation, when air-conditioner 100 does not need to carry out second vapor injection, the first control valve 7 and the second control valve 8 can be closed, to shield the intermediate loop system that the first control valve 7, second control valve 8 and injector 6 are configured to.
Air-conditioner 100 is when refrigerating operaton, now the first control valve 7 and the second control valve 8 are in closed condition, first valve port D of cross valve 2 and the second valve port C conducting and the 3rd valve port E and the 4th valve port S conducting, the refrigerant of now discharging from compressor 1 enters into outdoor heat exchanger 3 through cross valve 2, heat exchanger 3 refrigerant of discharging is successively by entering into indoor heat exchanger 50 after the reducing pressure by regulating flow of first throttle element 4 and second section fluid element 51 outdoor, and the refrigerant that heat exchanger 50 is discharged indoor is expelled back in compressor 1 by cross valve 2 and gas returning port b.
In concrete examples more of the present invention, first control valve 7 and the second control valve 8 can be magnetic valve, and air-conditioner 100 also comprises the elements such as electric-controlled box, electric-controlled box can be connected with the second control valve 8 duty controlling the first control valve 7 and the second control valve 8 with the first control valve 7.Certainly be worth understanding, air-conditioner 100 also can comprise the element such as indoor fan, outdoor fan.
According to the air-conditioner 100 of the embodiment of the present invention, when low-temperature heating runs, when air-conditioner 100 needs to carry out second vapor injection, the first control valve 7 can be controlled and the second control valve 8 is opened, the refrigerant of the HTHP of discharging from the exhaust outlet a of compressor 1 and discharge low temperature liquid refrigerant low pressure from second section fluid element 51 and enter into injector 6, injector 6 not only can utilize high-temperature exhaust air to heat second vapor injection, to promote the degree of superheat of second vapor injection, injector 6 can also reclaim the loss that a part of high pressure fluid reduces simultaneously, thus by being provided with the first control valve 7, second control valve 8 and injector 6, the ability efficiency of air-conditioner 100 can be improved.
As shown in Figure 1, in some embodiments of the invention, air-conditioner 100 also comprises the 3rd control valve 9, and outlet i is connected with gas returning port b by the 3rd control valve 9, namely now the outlet i of injector 6 is not only connected with jet f, and the outlet i of injector 6 is also connected with gas returning port b by the 3rd control valve 9.Now injector 6, first control valve 7, second control valve 8 and the 3rd control valve 9 form the second vapor injection loop of air-conditioner 100.Alternatively, the 3rd control valve 9 is magnetic valve.
Particularly, when the discharge capacity of air-conditioner 100 is larger, and when Smaller load refrigerating operaton, now can open the first control valve 7 and the second control valve 8 makes injector 6 work, suitably open the 3rd control valve 9, a part of refrigerant of discharging from first throttle element 4 enters into injector 6 (being equivalent to unload the refrigerant of a part to indoor heat exchanger 50), now because the pressure at gas returning port b place is less than the pressure at jet f place, the refrigerant of discharging from the outlet i of injector 6 is expelled back in compressor 1 by gas returning port b, ensure that huge discharge Smaller load runs continuously, prevent indoor heat exchanger 50 frosting, the generation of the phenomenons such as condensation.Simultaneously for low-temperature heating start-up course, also by suitably opening the 3rd control valve 9, the low pressure return-air amount of air-conditioner 100 can be supplemented.
Thus by being provided with the 3rd control valve 9, and outlet i is connected with the gas returning port b of compressor 1 by the 3rd control valve 9, can prevent indoor heat exchanger 50 from occurring the phenomenon such as frosting, condensation when Smaller load refrigerating operaton, in low-temperature heating start-up course, the low pressure return-air amount of air-conditioner 100 can be supplemented.
In some embodiments of the invention, air-conditioner 100 also comprises gas-liquid separator 10, and gas-liquid separator 10 comprises entrance m and gas outlet n, and entrance m connects with outlet i and the 4th valve port S-phase, and gas outlet n is connected with gas returning port b.That is, the refrigerant of discharging from the outlet i of the 4th valve port S and injector 6 enters in gas-liquid separator 10 by entrance m, the refrigerant entered in gas-liquid separator 10 carries out gas-liquid separation in gas-liquid separator 10, gaseous coolant after separation is expelled back in compressor 1 by gas outlet n and gas returning port b, thus by ensureing that the refrigerant entered in compressor 1 is only gaseous coolant, avoids liquid refrigerants enter in compressor 1 and occur liquid hit phenomenon.
Describe the structure of air-conditioner 100 according to the preferred embodiment of the invention below with reference to Fig. 1, wherein indoor set assembly 5 is one.
The exhaust outlet a of compressor 1 is connected with the first valve port D of cross valve 2 and the first control valve 7, second valve port C of cross valve 2 is connected with the first end of outdoor heat exchanger 3, second end of outdoor heat exchanger 3 is connected with the first end of first throttle element 4, second end of first throttle element 4 is connected with the first end of second section fluid element 51 and the second control valve 8, second end of second section fluid element 51 is connected with the first end of indoor heat exchanger 50, second end of indoor heat exchanger 50 is connected with the 3rd valve port E of cross valve 2, 4th valve port S of cross valve 2 is connected with the entrance m of gas-liquid separator 10 with the 3rd control valve 9, the gas outlet n of gas-liquid separator 10 is connected with the gas returning port b of compressor 1.
Wherein the first import g of injector 6 is connected with the first control valve 7, and the second import h of injector 6 is connected with the second control valve 8, and the outlet i of injector 6 is connected with the jet f of compressor 1 and the 3rd control valve 9.Namely now the entrance m of gas-liquid separator 10 is connected with the 4th valve port S-phase and is connected by the jet f of the 3rd control valve 9 with injector 6 and compressor 1.
According to the air-conditioner 100 of the embodiment of the present invention, when low-temperature heating runs, when air-conditioner 100 needs to carry out second vapor injection, the first control valve 7 can be controlled and the second control valve 8 opens and the 3rd control valve 9 is closed, the refrigerant of the HTHP of discharging from the exhaust outlet a of compressor 1 and discharge low temperature liquid refrigerant low pressure from second section fluid element 51 and enter into injector 6, injector 6 not only can utilize high-temperature exhaust air to heat second vapor injection, to promote the degree of superheat of second vapor injection, injector 6 can also reclaim the loss that a part of high pressure fluid reduces simultaneously, thus by being provided with the first control valve 7, second control valve 8, 3rd control valve 9 and injector 6, the ability efficiency of air-conditioner 100 can be improved.
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 only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.

Claims (10)

1. an air-conditioner, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet, gas returning port and jet;
Cross valve, described cross valve comprises first to fourth valve port, and described first valve port is connected with described exhaust outlet, and described 4th valve port is connected with described gas returning port;
Outdoor heat exchanger, the first end of described outdoor heat exchanger is connected with described second valve port;
First throttle element, the first end of described first throttle element is connected with the second end of described outdoor heat exchanger;
Indoor set assembly, described indoor set assembly comprises an indoor heat exchanger and second section fluid element, the first end of described second section fluid element is connected with the second end of described first throttle element, and described indoor heat exchanger is connected with described 3rd valve port with the second end of described second section fluid element respectively;
Injector, described injector is provided with the first import, the second import and outlet, described first import is connected with described exhaust outlet by the first control valve, described second import is connected with the second end of described first throttle element by the second control valve, described outlet is connected with described jet, wherein when air-conditioner is in low-temperature heating operation, described first control valve and the second control valve are opened, and discharge and got back in described compressor by described jet from described first import and described second import after entering into the refrigerant mixing in described injector from described outlet.
2. air-conditioner according to claim 1, is characterized in that, also comprises the 3rd control valve, and described outlet is connected with described gas returning port by described 3rd control valve.
3. air-conditioner according to claim 2, is characterized in that, described 3rd control valve is magnetic valve.
4. air-conditioner according to claim 1, is characterized in that, described indoor set assembly is at least two.
5. air-conditioner according to claim 4, is characterized in that, the described second section fluid element in each described indoor set assembly is for regulating cold medium flux and carrying out reducing pressure by regulating flow to refrigerant.
6. air-conditioner according to claim 5, is characterized in that, described second section fluid element is electric expansion valve or heating power expansion valve.
7. air-conditioner according to claim 1, is characterized in that, also comprises gas-liquid separator, and described gas-liquid separator comprises entrance and gas outlet, and described entrance is connected with described 4th valve port with described outlet, and described gas outlet is connected with described gas returning port.
8. air-conditioner according to claim 2, it is characterized in that, also comprise gas-liquid separator, described gas-liquid separator comprises entrance and gas outlet, described entrance is connected with described 4th valve port and is connected with the described jet of described injector and described compressor by described 3rd control valve, and described gas outlet is connected with the gas returning port of described compressor.
9. air-conditioner according to claim 1, is characterized in that, described first throttle element is electric expansion valve, restricting orifice, capillary or heating power expansion valve.
10. air-conditioner according to claim 1, is characterized in that, described first control valve and described second control valve are respectively magnetic valve.
CN201410136802.5A 2014-04-04 2014-04-04 Air conditioner Active CN104976813B (en)

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CN104976813B CN104976813B (en) 2017-07-28

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Cited By (7)

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CN105928266A (en) * 2016-05-23 2016-09-07 广东美的暖通设备有限公司 Multi-online system and control method for heating and throttling element of multi-online system
CN106152582A (en) * 2016-07-11 2016-11-23 格力电器(芜湖)有限公司 A kind of air conditioning system
CN106196694A (en) * 2016-07-11 2016-12-07 广东美的暖通设备有限公司 Air conditioning system
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