CN104748295A - Air conditioner and recycling method for air conditioner refrigerant - Google Patents
Air conditioner and recycling method for air conditioner refrigerant Download PDFInfo
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- CN104748295A CN104748295A CN201410003286.9A CN201410003286A CN104748295A CN 104748295 A CN104748295 A CN 104748295A CN 201410003286 A CN201410003286 A CN 201410003286A CN 104748295 A CN104748295 A CN 104748295A
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- air
- control device
- conditioner
- refrigerant
- circulation passage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a recycling method for air conditioner refrigerant. The air conditioner comprises a compressor, a four-way valve, a condenser, a throttling element, an evaporator, a high-pressure stop valve, a low-pressure stop valve, a first control device, a second control device and a controller, wherein the high-pressure stop valve and the low-pressure stop valve are arranged on a first circulating channel and a second circulating channel in series respectively, the first control device is arranged on the first circulating channel in series in order to open or close the first circulating channel, and the second control device is arranged on the second circulating channel in series in order to open or close the second circulating channel. According to the air conditioner and the recycling method for the air conditioner refrigerant, due to the fact that the first control device and the second control device are arranged, when the refrigerant needs to be recycled, by controlling the actions of the first control device and the second control device, the purpose of automatically recycling the refrigerant in the air conditioner into an outdoor unit is achieved, it is guaranteed that the refrigerant does not exist in an indoor unit, and therefore the safety of indoor environment is improved.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, specifically, the particularly a kind of refrigerant recovering method of air-conditioner and air-conditioner.
Background technology
According to fulfiling Montreal protocol requirement, the refrigerant R22 used at present R410A etc. can progressively be eliminated, refrigerant R290 as an alternative one of refrigerant will be widely used.But because refrigerant R290 has inflammable and explosive characteristic, make air-conditioner there is certain potential safety hazard.Especially, under the state of shutting down, when indoor set inside exists refrigerant R290, reduce the safety coefficient of air-conditioner, thus the safety of indoor environment is on the hazard.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
For this reason, to be to propose a kind of safety coefficient high and can the air-conditioner of the automatic recovery refrigerant for one object of the present invention.
Another object of the present invention is a kind of refrigerant recovering method proposing air-conditioner.
According to the air-conditioner of the embodiment of the present invention, comprising: compressor, described compressor has exhaust outlet and air entry; Cross valve, described cross valve has first to fourth valve port, and described first valve port is connected with described exhaust outlet, and described second valve port is connected with described air entry; Condenser, the first end of described condenser is connected with described 3rd valve port; Restricting element, the first end of described restricting element is connected with the second end of described condenser; Evaporimeter, the first end of described evaporimeter is connected with the second end of described restricting element by first-class circulation passage, and the second end of described evaporimeter is connected with described 4th valve port by second circulation passage; High-pressure stop valve and low-pressure shutoff valve, described high-pressure stop valve and described low-pressure shutoff valve are connected respectively and are located in described first-class circulation passage and described second circulation passage; First control device, described first control device is connected in described first-class circulation passage to open or close described first-class circulation passage; Second control device, described second control device is connected in described second circulation passage to open or close described second circulation passage; Controller, described controller is connected with described second control device the running status controlling described first control device and described second control device with described first control device.
According to the air-conditioner of the embodiment of the present invention, by being provided with first control device and second control device, when needs reclaim refrigerant, by controlling the action of first control device and second control device, realize the automatic recovery of refrigerant in air-conditioner to the object in off-premises station, ensure that in indoor set there is no refrigerant, thus improve the security of indoor environment.
In addition, according to air-conditioner of the present invention, also there is following additional technical feature:
According to one embodiment of present invention, described first control device is between described high-pressure stop valve and described restricting element.
According to one embodiment of present invention, described second control device is between described low-pressure shutoff valve and described 4th valve port.
According to one embodiment of present invention, described first control device is electric expansion valve.
According to another embodiment of the invention, described first control device is magnetic valve.
Alternatively, described second control device is magnetic valve.
According to an example of the present invention, described restricting element is capillary.
According to the refrigerant recovering method of the air-conditioner of the embodiment of the present invention, described air-conditioner is above-mentioned air-conditioner, and described refrigerant recovering method comprises the steps:
S1: when described air-conditioner receives recovery refrigerant instruction, detect the operational mode of described air-conditioner;
S2: when described air-conditioner is in refrigeration mode, controls described first control device and closes first-class circulation passage, controls described second control device and close described second circulation passage and control the closedown of described compressor after first scheduled time;
When described air-conditioner is in heating mode, after controlling described compressor second scheduled time out of service, described cross valve resets to refrigeration mode, described compressor operating is controlled after the 3rd scheduled time that described cross valve resets to refrigeration mode, after described compressor operating the 4th scheduled time, control described first control device and close first-class circulation passage, after the 5th scheduled time, control described second control device close described second circulation passage and control the closedown of described compressor.
According to the refrigerant recovering method of the air-conditioner of the embodiment of the present invention, by being provided with first control device and second control device, when needs reclaim refrigerant, by controlling the action of first control device and second control device, realize the automatic recovery of refrigerant in air-conditioner to the object in off-premises station, ensure that in indoor set there is no refrigerant, thus improve the security of indoor environment.
Further, described air-conditioner also comprises indoor fan and outdoor fan, and the contiguous described evaporimeter of described indoor fan is arranged, and the contiguous described condenser of described outdoor fan is arranged.
Particularly, in step sl, when described air-conditioner receives recovery refrigerant instruction, control described indoor fan and quit work; In step s 2, after controlling described second control device and close described second circulation passage and controlling the 6th scheduled time of described compressor closedown, described outdoor fan is closed.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of air-conditioner according to an embodiment of the invention, and the parts wherein in figure in dashed rectangle are positioned on off-premises station, and the parts outside dashed rectangle are positioned on indoor set;
Fig. 2 is the structural representation of air-conditioner according to an embodiment of the invention, and wherein first control device is electric expansion valve, and the parts in figure in dashed rectangle are positioned on off-premises station, and the parts outside dashed rectangle are positioned on indoor set;
Fig. 3 is the flow chart of the refrigerant recovering method of air-conditioner according to an embodiment of the invention.
Reference numeral
Air-conditioner 100,
Compressor 10, exhaust outlet 11, air entry 12,
Cross valve 20, the first valve port D, the second valve port S, the 3rd valve port C, the 4th valve port E,
Condenser 30, restricting element 40, evaporimeter 50,
High-pressure stop valve 60, low-pressure shutoff valve 70,
First control device 80, second control device 90,
First-class circulation passage a, second circulation passage b.
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.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are 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 limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; 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.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
Describe the air-conditioner 100 according to the embodiment of the present invention below with reference to Fig. 1-Fig. 2, the parts wherein in dotted line frame are positioned at the off-premises station of air-conditioner 100, and the parts outside dotted line frame are positioned on the indoor set of air-conditioner 100.
As shown in Figure 1 and Figure 2, according to the air-conditioner 100 of the embodiment of the present invention, comprising: compressor 10, cross valve 20, condenser 30, restricting element 40, evaporimeter 50, high-pressure stop valve 60, low-pressure shutoff valve 70, first control device 80, second control device 90 and controller (not shown).
Specifically, compressor 10 has exhaust outlet 11 and air entry 12.Cross valve 20 has the first valve port D, the second valve port S, the 3rd valve port C and the 4th valve port E, first valve port D is connected with exhaust outlet 11, second valve port S is connected with air entry 12, and the 3rd valve port C is connected with the first end of condenser 30, and the 4th valve port E is connected with the second end of evaporimeter 50.When air-conditioner 100 is in refrigerating operaton, first valve port D of cross valve 20 and the 3rd valve port C conducting and the second valve port S and the 4th valve port E conducting, when air-conditioner 100 is in heating operation, the first valve port D of cross valve 20 and the 4th valve port E conducting and the second valve port S and the 3rd valve port C conducting.
Restricting element 40 is provided with between condenser 30 and evaporimeter 50.That is, the first end of restricting element 40 is connected with the second end of condenser 30, and the second end of restricting element 40 is connected with the first end of evaporimeter 50 by first-class circulation passage a.Second end of evaporimeter 50 is connected with the 4th valve port E by second circulation passage b.High-pressure stop valve 60 and low-pressure shutoff valve 70 are connected respectively and are located on first-class circulation passage a and second circulation passage b.First control device 80 is connected on first-class circulation passage a to open or close first-class circulation passage a.Second control device 90 is connected on second circulation passage b to open or close second circulation passage b.The running status that controller is connected to control first control device 80 and second control device 90 with second control device 90 with first control device 80.
Specifically, when air-conditioner 100 is in refrigerating operaton, after air-conditioner 100 receives the instruction of recovery refrigerant, compressor 10 keeps running, and cross valve 20 is failure to actuate, and now first control device 80 is closed, refrigerant enters condenser 30 and restricting element 40 after compressor 10 compresses, because first control device 80 is closed, cut-out off-premises station and indoor set are on high-tension side conducting, and refrigerant cannot flow out condenser 30 and be stored in off-premises station.After compressor 10 runs first scheduled time (being such as 1-5 minute), refrigerant within first scheduled time in indoor set is all got back in compressor 10, second control device 90 is closed afterwards, cut off the conducting in low-pressure side of off-premises station and indoor set, close compressor 10, completes refrigerant recovering circulation.Now refrigerant is recovered in off-premises station by air-conditioner 100, does not have refrigerant in indoor set.
Air-conditioner 100 be in heat state time, reclaim after refrigerant instruction or air-conditioner 100 give tacit consent to and reclaim refrigerant instruction when air-conditioner 100 receives, compressor 10 first cuts out, and keeps for second scheduled time (such as 5-15 second).Compressor 10 cut out for second scheduled time (such as 5-15 second) afterwards cross valve 20 reset to refrigerating state.After the 3rd scheduled time (being such as 10 seconds) that cross valve 20 resets to refrigerating state, compressor 10 runs.After compressor 10 runs the 4th scheduled time (being such as 25-35 second), first control device 80 is closed, block the stream in first-class circulation passage a, all enter condenser 30 from the refrigerant of compressor 10 discharge and store, keep operation the 5th scheduled time (being such as 1-3 minute).Refrigerant within the 5th scheduled time (being such as 1-3 minute) in indoor set is all got back in compressor, and second control device 90 is closed afterwards, blocks the stream in second circulation passage b, close compressor 10.
According to the air-conditioner 100 of the embodiment of the present invention, by being provided with first control device 80 and second control device 90, when needs reclaim refrigerant, by controlling the action of first control device 80 and second control device 90, realize the automatic recovery of refrigerant in air-conditioner 100 to the object in off-premises station, ensure that in indoor set there is no refrigerant, thus improve the security of indoor environment.
As Figure 1-Figure 2, according to some embodiments of the present invention, first control device 80 is between high-pressure stop valve 60 and restricting element 40, and second control device 90 is between institute's pressure cutoff valve and the 4th valve port E.Thus, technical staff is facilitated to keep in repair air-conditioner.
According to one embodiment of present invention, first control device 80 can be electric expansion valve.Be understandable that, the structure of first control device 80 is not limited to this, as long as it effectively can control opening of first-class circulation passage a and close.Such as, in another embodiment of the present invention, first control device 80 can also be magnetic valve.
Also it should be noted that, the structure for second control device 90 does not do special restriction, and it effectively can control opening of second circulation passage b and close.Such as, according to one embodiment of present invention, second control device 90 can be magnetic valve.In addition, according to one embodiment of present invention, restricting element 40 can be capillary.Certainly, the structure of restricting element 40 is not limited to this.
Be understandable that, air-conditioner 100 can also comprise remote controller (scheming not shown).Remote controller is provided with and reclaims refrigerant button.When air-conditioner 100 quits work, user can recovery refrigerant button on direct control remote controller, controls air-conditioner 100 and carries out refrigerant recovering action.Thus, user-friendly air-conditioner 100.
Describe the refrigerant recovering method according to the air-conditioner of the embodiment of the present invention below with reference to Fig. 1-Fig. 3, wherein air-conditioner is air-conditioner according to the above embodiment of the present invention.
As shown in Figure 3, according to the refrigerant recovering method of the air-conditioner of the embodiment of the present invention, comprise the steps:
S1: when air-conditioner receives recovery refrigerant instruction, detect the operational mode of air-conditioner, in concrete example of the present invention, operating state by detecting the cross valve of air-conditioner detects the operational mode of air-conditioner, what be certainly worth understanding is, the present invention is not limited thereto, the operational mode detecting air-conditioner in any way can be adopted.Wherein, air-conditioner receives the situation reclaiming refrigerant instruction and is divided into two kinds, and the first is when air-conditioner runs, and user reclaims refrigerant instruction by the recovery refrigerant button on pressing remote controller to send to air-conditioner.The second is provided with control program in the controller of air-conditioner, reclaims refrigerant instruction to send to air-conditioner when setting.That is, after air-conditioner receives recovery refrigerant instruction or air-conditioner acquiescence reclaims refrigerant instruction, the operational mode of air-conditioner is detected.
S2: when air-conditioner is in refrigeration mode, controls first control device and closes first-class circulation passage, controls second control device and close second circulation passage and control compressor closedown after first scheduled time;
When air-conditioner is in heating mode, after control compressor stops operation second scheduled time, cross valve resets to refrigeration mode, compressor operating is controlled after the 3rd scheduled time that cross valve resets to refrigeration mode, after compressor operating the 4th scheduled time, control first control device is closed first-class circulation passage and after the 5th scheduled time, is controlled second control device closedown second circulation passage and control compressor to close.
Specifically, when air-conditioner is in refrigerating state, first-class circulation passage and second circulation passage are conducting state, and the circulatory system of air-conditioner is equivalent to be same as common air-conditioner.After air-conditioner receives recovery refrigerant instruction or air-conditioner acquiescence reclaims refrigerant instruction, compressor keeps running, cross valve is failure to actuate, first control device is closed, block the stream in first-class circulation passage, cut-out off-premises station and indoor set are on high-tension side conducting, and refrigerant cannot flow out condenser and be stored in off-premises station.Compressor operating first scheduled time (being such as 1-5 minute), refrigerant within first scheduled time (being such as 1-5 minute) in indoor set is all got back in compressor, second control device is closed afterwards, block the stream in second circulation passage, cut off the conducting in low-pressure side of off-premises station and indoor set, close compressor.Now refrigerant is recovered in off-premises station by air-conditioner, does not have refrigerant in indoor set.
When air-conditioner be in heat state time, first-class circulation passage and second circulation passage are conducting state, and the circulatory system of air-conditioner is equivalent to be same as common air-conditioner.After air-conditioner receives recovery refrigerant instruction or air-conditioner acquiescence reclaims refrigerant instruction, compressor first cuts out, and keeps for second scheduled time (being such as 5-15 second).Compressor cut out for second scheduled time (such as 5-15 second) afterwards cross valve reset to refrigerating state.After cross valve resets to refrigerating state the 3rd scheduled time (being such as 10 seconds), compressor operating.After compressor operating the 4th scheduled time (being such as 25-35 second), first control device is closed, block the stream in first-class circulation passage, the refrigerant of discharging from compressor all enters condenser storage, keep operation the 5th scheduled time (being such as 1-3 minute), the refrigerant within the 5th scheduled time (being such as 1-3 minute) in indoor set is all got back in compressor, and second control device is closed afterwards, block the stream in second circulation passage, close compressor.
According to the refrigerant recovering method of the air-conditioner 100 of the embodiment of the present invention, by being provided with first control device 80 and second control device 90, when needs reclaim refrigerant, by controlling the action of first control device and second control device, realize the automatic recovery of refrigerant in air-conditioner to the object in off-premises station, ensure that in indoor set there is no refrigerant, thus improve the security of indoor environment.
According to one embodiment of present invention, air-conditioner 100 also comprises indoor fan (scheming not shown) and outdoor fan (scheming not shown), and the contiguous evaporimeter 50 of indoor fan is arranged, and the contiguous condenser 30 of outdoor fan is arranged.Thus, the speed of the air flowing near evaporimeter 50 and condenser 30 can be accelerated, improve the heat exchanger effectiveness of evaporimeter 50 and condenser 30.
As shown in Figure 3, according to one embodiment of present invention, in step sl, when air-conditioner 100 receives recovery refrigerant instruction, control room inner blower quits work; In step s 2, after controlling second control device 90 and close second circulation passage b and controlling the 6th scheduled time of compressor 10 closedown, outdoor fan is closed.
The refrigerant recovering method of the air-conditioner according to different embodiments of the invention is described in detail referring to Fig. 1-Fig. 3.
First embodiment:
Air-conditioner 100 according to the embodiment of the present invention is cold-warm type convertible frequency air-conditioner, and in this embodiment, first control device 80 is the control valve except electric expansion valve.
When air-conditioner 100 is in refrigerating state, first-class circulation passage a and second circulation passage b is conducting state, and the circulatory system of air-conditioner 100 is equivalent to be same as common air-conditioner 100.After air-conditioner 100 receives recovery refrigerant instruction or the instruction of recovery refrigerant given tacit consent to by air-conditioner 100, compressor 10 keeps running, cross valve 20 is failure to actuate, first control device 80 is closed, block the stream in first-class circulation passage a, cut-out off-premises station and indoor set are on high-tension side conducting, and refrigerant cannot flow out condenser 30 and be stored in off-premises station.Compressor 10 runs first scheduled time (being such as 1-5 minute), refrigerant within first scheduled time (being such as 1-5 minute) in indoor set is all got back in compressor 10, second control device 90 is closed afterwards, block the stream in second circulation passage b, cut off the conducting in low-pressure side of off-premises station and indoor set, close compressor 10.Now refrigerant is recovered in off-premises station by air-conditioner 100, does not have refrigerant in indoor set.
Wherein, in the process of refrigerastion of air-conditioner 100, when air-conditioner 100 receives recovery refrigerant order, indoor fan quits work, outdoor fan remains opening in the process of refrigerant recovering, until refrigerant recovering operation terminates and compressor 10 quit work for the 6th scheduled time after (being such as 25-35 second), outdoor fan quits work.
So far, the air-conditioner 100 being in refrigerating state completes the operation of refrigerant recovering.
When air-conditioner 100 be in heat state time, first-class circulation passage a and second circulation passage b is conducting state, and the circulatory system of air-conditioner 100 is equivalent to be same as common air-conditioner 100.After air-conditioner 100 receives recovery refrigerant instruction or the instruction of recovery refrigerant given tacit consent to by air-conditioner 100, compressor 10 first cuts out, and keeps for second scheduled time (being such as 5-15 second).Compressor 10 cut out for second scheduled time (such as 5-15 second) afterwards cross valve 20 reset to refrigerating state.After cross valve 20 resets to refrigerating state the 3rd scheduled time (being such as 10 seconds), compressor 10 runs.After compressor 10 runs the 4th scheduled time (being such as 25-35 second), first control device 80 is closed, block the stream in first-class circulation passage a, all enter condenser 30 from the refrigerant of compressor 10 discharge to store, keep operation the 5th scheduled time (being such as 1-3 minute), refrigerant within the 5th scheduled time (being such as 1-3 minute) in indoor set is all got back in compressor, second control device 90 is closed afterwards, block the stream in second circulation passage b, close compressor 10.
Wherein, in the heating operations of air-conditioner 100, when air-conditioner 100 receives recovery refrigerant order, indoor fan quits work, outdoor fan remains opening in the process of refrigerant recovering, until refrigerant recovering operation terminates and compressor 10 quit work for the 6th scheduled time after (being such as 25-35 second), outdoor fan quits work.
So far, the air-conditioner 100 being in the state of heating completes the operation of refrigerant recovering.
Second embodiment:
Air-conditioner 100 according to the embodiment of the present invention is cold-warm type convertible frequency air-conditioner, and first control device 80 is electric expansion valve.
When air-conditioner 100 is in refrigerating state, second circulation passage b is conducting state, and the circulatory system of air-conditioner 100 is equivalent to be same as common air-conditioner 100.After air-conditioner 100 receives recovery refrigerant instruction or the instruction of recovery refrigerant given tacit consent to by air-conditioner 100, compressor 10 keeps running, cross valve 20 is failure to actuate, electric expansion valve oppositely forwards closed condition to, block the stream in first-class circulation passage a, cut-out off-premises station and indoor set are on high-tension side conducting, and refrigerant cannot flow out condenser 30 and be stored in off-premises station.Compressor 10 runs first scheduled time (being such as 1-5 minute), refrigerant within first scheduled time (being such as 1-5 minute) in indoor set is all got back in compressor 10, second control device 90 is closed afterwards, block the stream in second circulation passage b, cut off the conducting in low-pressure side of off-premises station and indoor set, close compressor 10.Now refrigerant is recovered in off-premises station by air-conditioner 100, does not have refrigerant in indoor set.
Wherein, in the process of refrigerastion of air-conditioner 100, when air-conditioner 100 receives recovery refrigerant order, indoor fan quits work, outdoor fan remains opening in the process of refrigerant recovering, until refrigerant recovering operation terminates and compressor 10 quit work for the 6th scheduled time after (being such as 25-35 second), outdoor fan quits work.
So far, the air-conditioner 100 being in refrigerating state completes the operation of refrigerant recovering.
When air-conditioner 100 be in heat state time, second circulation passage b is conducting state, and the circulatory system of air-conditioner 100 is equivalent to be same as common air-conditioner 100.After air-conditioner 100 receives recovery refrigerant instruction or the instruction of recovery refrigerant given tacit consent to by air-conditioner 100, compressor 10 first cuts out, and keeps for second scheduled time (being such as 5-15 second).Compressor 10 cut out for second scheduled time (such as 5-15 second) afterwards cross valve 20 reset to refrigerating state.After cross valve 20 resets to refrigerating state the 3rd scheduled time (being such as 5-15 second), compressor 10 runs.After compressor 10 runs the 4th scheduled time (being such as 25-35 second), electric expansion valve oppositely forwards closed condition to, blocks the stream in first-class circulation passage a, all enters condenser 30 store from the refrigerant of compressor 10 discharge.Keep operation the 5th scheduled time (being such as 1-3 minute), refrigerant within the 5th scheduled time (being such as 1-3 minute) in indoor set is all got back in compressor, second control device 90 is closed afterwards, blocks the stream in second circulation passage b, close compressor 10.
Wherein, in the heating operations of air-conditioner 100, when air-conditioner 100 receives recovery refrigerant order, indoor fan quits work, outdoor fan remains opening in the process of refrigerant recovering, until refrigerant recovering operation terminates and compressor 10 quit work for the 6th scheduled time after (being such as 25-35 second), outdoor fan quits work.
So far, the air-conditioner 100 being in the state of heating completes the operation of refrigerant recovering.
Other formations according to the air-conditioner of the embodiment of the present invention are all known for those of ordinary skills, are not described in detail here.Just certain embodiments disclosed above, can not limit the example ranges of the present invention with this, the equivalent variations done with the claims in the present invention still belongs to the scope that this present invention comprises.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " 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, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. an air-conditioner, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet and air entry;
Cross valve, described cross valve has first to fourth valve port, and described first valve port is connected with described exhaust outlet, and described second valve port is connected with described air entry;
Condenser, the first end of described condenser is connected with described 3rd valve port;
Restricting element, the first end of described restricting element is connected with the second end of described condenser;
Evaporimeter, the first end of described evaporimeter is connected with the second end of described restricting element by first-class circulation passage, and the second end of described evaporimeter is connected with described 4th valve port by second circulation passage;
High-pressure stop valve and low-pressure shutoff valve, described high-pressure stop valve and described low-pressure shutoff valve are connected respectively and are located in described first-class circulation passage and described second circulation passage;
First control device, described first control device is connected in described first-class circulation passage to open or close described first-class circulation passage;
Second control device, described second control device is connected in described second circulation passage to open or close described second circulation passage;
Controller, described controller is connected with described second control device the running status controlling described first control device and described second control device with described first control device.
2. air-conditioner according to claim 1, is characterized in that, described first control device is between described high-pressure stop valve and described restricting element.
3. air-conditioner according to claim 1, is characterized in that, described second control device is between described low-pressure shutoff valve and described 4th valve port.
4. air-conditioner according to claim 1, is characterized in that, described first control device is electric expansion valve.
5. air-conditioner according to claim 1, is characterized in that, described first control device is magnetic valve.
6. the air-conditioner according to any one of claim 1-5, is characterized in that, described second control device is magnetic valve.
7. air-conditioner according to claim 1, is characterized in that, described restricting element is capillary.
8. a refrigerant recovering method for air-conditioner, described air-conditioner is the air-conditioner according to any one of claim 1-7, it is characterized in that, described refrigerant recovering method comprises the steps:
S1: when described air-conditioner receives recovery refrigerant instruction, detect the operational mode of described air-conditioner;
S2: when described air-conditioner is in refrigeration mode, controls described first control device and closes first-class circulation passage, controls described second control device and close described second circulation passage and control the closedown of described compressor after first scheduled time;
When described air-conditioner is in heating mode, after controlling described compressor second scheduled time out of service, described cross valve resets to refrigeration mode, described compressor operating is controlled after the 3rd scheduled time that described cross valve resets to refrigeration mode, after described compressor operating the 4th scheduled time, control described first control device and close first-class circulation passage, after the 5th scheduled time, control described second control device close described second circulation passage and control the closedown of described compressor.
9. the refrigerant recovering method of air-conditioner according to claim 8, is characterized in that, described air-conditioner also comprises indoor fan and outdoor fan, and the contiguous described evaporimeter of described indoor fan is arranged, and the contiguous described condenser of described outdoor fan is arranged.
10. the refrigerant recovering method of air-conditioner according to claim 9, is characterized in that, in step sl, when described air-conditioner receives recovery refrigerant instruction, controls described indoor fan and quits work;
In step s 2, after controlling described second control device and close described second circulation passage and controlling the 6th scheduled time of described compressor closedown, described outdoor fan is closed.
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| CN201410003286.9A CN104748295B (en) | 2014-01-01 | 2014-01-01 | The refrigerant recovering method of air conditioner and air conditioner |
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| CN201410003286.9A CN104748295B (en) | 2014-01-01 | 2014-01-01 | The refrigerant recovering method of air conditioner and air conditioner |
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| CN106369717A (en) * | 2016-10-08 | 2017-02-01 | 芜湖美智空调设备有限公司 | Air-conditioner and control method thereof |
| CN106595149A (en) * | 2016-11-22 | 2017-04-26 | 珠海格力电器股份有限公司 | Refrigerant recovery method and device of air conditioner |
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| CN109357369A (en) * | 2018-09-10 | 2019-02-19 | 珠海格力电器股份有限公司 | Air conditioner and its refrigerant recovering control method |
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| CN105698284B (en) * | 2016-03-14 | 2018-10-19 | 广东美的制冷设备有限公司 | Air-conditioning system and its refrigeration control method and device |
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| CN106895486A (en) * | 2017-02-28 | 2017-06-27 | 广东美的制冷设备有限公司 | A kind of air-conditioner, the control device of air-conditioner and its control method |
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| CN107421059A (en) * | 2017-06-09 | 2017-12-01 | 宁波奥克斯电气股份有限公司 | Prevent flammable refrigerant from getting in the control method of side when air conditioner shuts down |
| CN109357369A (en) * | 2018-09-10 | 2019-02-19 | 珠海格力电器股份有限公司 | Air conditioner and its refrigerant recovering control method |
| CN109357369B (en) * | 2018-09-10 | 2020-06-02 | 珠海格力电器股份有限公司 | Air conditioner and refrigerant recovery control method thereof |
| CN110805952B (en) * | 2019-11-26 | 2023-11-07 | 珠海格力电器股份有限公司 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
| CN110805952A (en) * | 2019-11-26 | 2020-02-18 | 珠海格力电器股份有限公司 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
| CN110822664A (en) * | 2019-11-27 | 2020-02-21 | 广东美的制冷设备有限公司 | Refrigerant recovery method and system of air conditioner and air conditioner |
| CN112032965A (en) * | 2020-08-20 | 2020-12-04 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and storage medium |
| CN112856566A (en) * | 2021-01-27 | 2021-05-28 | 光控特斯联(重庆)信息技术有限公司 | Intelligent heating system and method for intelligent community |
| CN112856566B (en) * | 2021-01-27 | 2023-03-10 | 光控特斯联(重庆)信息技术有限公司 | Intelligent heating system and method for intelligent community |
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